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-rw-r--r--src/fileio.c8148
1 files changed, 0 insertions, 8148 deletions
diff --git a/src/fileio.c b/src/fileio.c
deleted file mode 100644
index 4fc73d8ebf..0000000000
--- a/src/fileio.c
+++ /dev/null
@@ -1,8148 +0,0 @@
-/*
- * VIM - Vi IMproved by Bram Moolenaar
- *
- * Do ":help uganda" in Vim to read copying and usage conditions.
- * Do ":help credits" in Vim to see a list of people who contributed.
- * See README.txt for an overview of the Vim source code.
- */
-
-/*
- * fileio.c: read from and write to a file
- */
-
-#include <string.h>
-
-#include "vim.h"
-#include "fileio.h"
-#include "blowfish.h"
-#include "buffer.h"
-#include "charset.h"
-#include "diff.h"
-#include "edit.h"
-#include "eval.h"
-#include "ex_cmds.h"
-#include "ex_docmd.h"
-#include "ex_eval.h"
-#include "fold.h"
-#include "getchar.h"
-#include "hashtab.h"
-#include "mbyte.h"
-#include "memfile.h"
-#include "memline.h"
-#include "memory.h"
-#include "message.h"
-#include "misc1.h"
-#include "misc2.h"
-#include "crypt.h"
-#include "garray.h"
-#include "move.h"
-#include "normal.h"
-#include "option.h"
-#include "os_unix.h"
-#include "path.h"
-#include "quickfix.h"
-#include "regexp.h"
-#include "screen.h"
-#include "search.h"
-#include "sha256.h"
-#include "term.h"
-#include "ui.h"
-#include "undo.h"
-#include "window.h"
-#include "os/os.h"
-
-
-#if defined(HAVE_UTIME) && defined(HAVE_UTIME_H)
-# include <utime.h> /* for struct utimbuf */
-#endif
-
-#define BUFSIZE 8192 /* size of normal write buffer */
-#define SMBUFSIZE 256 /* size of emergency write buffer */
-
-/* crypt_magic[0] is pkzip crypt, crypt_magic[1] is sha2+blowfish */
-static char *crypt_magic[] = {"VimCrypt~01!", "VimCrypt~02!"};
-static char crypt_magic_head[] = "VimCrypt~";
-# define CRYPT_MAGIC_LEN 12 /* must be multiple of 4! */
-
-/* For blowfish, after the magic header, we store 8 bytes of salt and then 8
- * bytes of seed (initialisation vector). */
-static int crypt_salt_len[] = {0, 8};
-static int crypt_seed_len[] = {0, 8};
-#define CRYPT_SALT_LEN_MAX 8
-#define CRYPT_SEED_LEN_MAX 8
-
-static char_u *next_fenc(char_u **pp);
-static char_u *readfile_charconvert(char_u *fname, char_u *fenc,
- int *fdp);
-static void check_marks_read(void);
-static int crypt_method_from_magic(char *ptr, int len);
-static char_u *check_for_cryptkey(char_u *cryptkey, char_u *ptr,
- long *sizep, off_t *filesizep,
- int newfile, char_u *fname,
- int *did_ask);
-#ifdef UNIX
-static void set_file_time(char_u *fname, time_t atime, time_t mtime);
-#endif
-static int set_rw_fname(char_u *fname, char_u *sfname);
-static int msg_add_fileformat(int eol_type);
-static void msg_add_eol(void);
-static int check_mtime(buf_T *buf, FileInfo *file_info);
-static int time_differs(long t1, long t2);
-static int apply_autocmds_exarg(event_T event, char_u *fname, char_u *fname_io,
- int force, buf_T *buf,
- exarg_T *eap);
-static int au_find_group(char_u *name);
-
-# define AUGROUP_DEFAULT -1 /* default autocmd group */
-# define AUGROUP_ERROR -2 /* erroneous autocmd group */
-# define AUGROUP_ALL -3 /* all autocmd groups */
-
-# define HAS_BW_FLAGS
-# define FIO_LATIN1 0x01 /* convert Latin1 */
-# define FIO_UTF8 0x02 /* convert UTF-8 */
-# define FIO_UCS2 0x04 /* convert UCS-2 */
-# define FIO_UCS4 0x08 /* convert UCS-4 */
-# define FIO_UTF16 0x10 /* convert UTF-16 */
-# define FIO_ENDIAN_L 0x80 /* little endian */
-# define FIO_ENCRYPTED 0x1000 /* encrypt written bytes */
-# define FIO_NOCONVERT 0x2000 /* skip encoding conversion */
-# define FIO_UCSBOM 0x4000 /* check for BOM at start of file */
-# define FIO_ALL -1 /* allow all formats */
-
-/* When converting, a read() or write() may leave some bytes to be converted
- * for the next call. The value is guessed... */
-#define CONV_RESTLEN 30
-
-/* We have to guess how much a sequence of bytes may expand when converting
- * with iconv() to be able to allocate a buffer. */
-#define ICONV_MULT 8
-
-/*
- * Structure to pass arguments from buf_write() to buf_write_bytes().
- */
-struct bw_info {
- int bw_fd; /* file descriptor */
- char_u *bw_buf; /* buffer with data to be written */
- int bw_len; /* length of data */
-#ifdef HAS_BW_FLAGS
- int bw_flags; /* FIO_ flags */
-#endif
- char_u bw_rest[CONV_RESTLEN]; /* not converted bytes */
- int bw_restlen; /* nr of bytes in bw_rest[] */
- int bw_first; /* first write call */
- char_u *bw_conv_buf; /* buffer for writing converted chars */
- int bw_conv_buflen; /* size of bw_conv_buf */
- int bw_conv_error; /* set for conversion error */
- linenr_T bw_conv_error_lnum; /* first line with error or zero */
- linenr_T bw_start_lnum; /* line number at start of buffer */
-# ifdef USE_ICONV
- iconv_t bw_iconv_fd; /* descriptor for iconv() or -1 */
-# endif
-};
-
-static int buf_write_bytes(struct bw_info *ip);
-
-static linenr_T readfile_linenr(linenr_T linecnt, char_u *p,
- char_u *endp);
-static int ucs2bytes(unsigned c, char_u **pp, int flags);
-static int need_conversion(char_u *fenc);
-static int get_fio_flags(char_u *ptr);
-static char_u *check_for_bom(char_u *p, long size, int *lenp, int flags);
-static int make_bom(char_u *buf, char_u *name);
-static int move_lines(buf_T *frombuf, buf_T *tobuf);
-#ifdef TEMPDIRNAMES
-static void vim_settempdir(char_u *tempdir);
-#endif
-static char *e_auchangedbuf = N_(
- "E812: Autocommands changed buffer or buffer name");
-
-void filemess(buf_T *buf, char_u *name, char_u *s, int attr)
-{
- int msg_scroll_save;
-
- if (msg_silent != 0)
- return;
- msg_add_fname(buf, name); /* put file name in IObuff with quotes */
- /* If it's extremely long, truncate it. */
- if (STRLEN(IObuff) > IOSIZE - 80)
- IObuff[IOSIZE - 80] = NUL;
- STRCAT(IObuff, s);
- /*
- * For the first message may have to start a new line.
- * For further ones overwrite the previous one, reset msg_scroll before
- * calling filemess().
- */
- msg_scroll_save = msg_scroll;
- if (shortmess(SHM_OVERALL) && !exiting && p_verbose == 0)
- msg_scroll = FALSE;
- if (!msg_scroll) /* wait a bit when overwriting an error msg */
- check_for_delay(FALSE);
- msg_start();
- msg_scroll = msg_scroll_save;
- msg_scrolled_ign = TRUE;
- /* may truncate the message to avoid a hit-return prompt */
- msg_outtrans_attr(msg_may_trunc(FALSE, IObuff), attr);
- msg_clr_eos();
- out_flush();
- msg_scrolled_ign = FALSE;
-}
-
-/*
- * Read lines from file "fname" into the buffer after line "from".
- *
- * 1. We allocate blocks with try_malloc, as big as possible.
- * 2. Each block is filled with characters from the file with a single read().
- * 3. The lines are inserted in the buffer with ml_append().
- *
- * (caller must check that fname != NULL, unless READ_STDIN is used)
- *
- * "lines_to_skip" is the number of lines that must be skipped
- * "lines_to_read" is the number of lines that are appended
- * When not recovering lines_to_skip is 0 and lines_to_read MAXLNUM.
- *
- * flags:
- * READ_NEW starting to edit a new buffer
- * READ_FILTER reading filter output
- * READ_STDIN read from stdin instead of a file
- * READ_BUFFER read from curbuf instead of a file (converting after reading
- * stdin)
- * READ_DUMMY read into a dummy buffer (to check if file contents changed)
- * READ_KEEP_UNDO don't clear undo info or read it from a file
- *
- * return FAIL for failure, OK otherwise
- */
-int
-readfile (
- char_u *fname,
- char_u *sfname,
- linenr_T from,
- linenr_T lines_to_skip,
- linenr_T lines_to_read,
- exarg_T *eap, /* can be NULL! */
- int flags
-)
-{
- int fd = 0;
- int newfile = (flags & READ_NEW);
- int check_readonly;
- int filtering = (flags & READ_FILTER);
- int read_stdin = (flags & READ_STDIN);
- int read_buffer = (flags & READ_BUFFER);
- int set_options = newfile || read_buffer
- || (eap != NULL && eap->read_edit);
- linenr_T read_buf_lnum = 1; /* next line to read from curbuf */
- colnr_T read_buf_col = 0; /* next char to read from this line */
- char_u c;
- linenr_T lnum = from;
- char_u *ptr = NULL; /* pointer into read buffer */
- char_u *buffer = NULL; /* read buffer */
- char_u *new_buffer = NULL; /* init to shut up gcc */
- char_u *line_start = NULL; /* init to shut up gcc */
- int wasempty; /* buffer was empty before reading */
- colnr_T len;
- long size = 0;
- char_u *p;
- off_t filesize = 0;
- int skip_read = FALSE;
- char_u *cryptkey = NULL;
- int did_ask_for_key = FALSE;
- int crypt_method_used;
- context_sha256_T sha_ctx;
- int read_undo_file = FALSE;
- int split = 0; /* number of split lines */
- linenr_T linecnt;
- int error = FALSE; /* errors encountered */
- int ff_error = EOL_UNKNOWN; /* file format with errors */
- long linerest = 0; /* remaining chars in line */
-#ifdef UNIX
- int perm = 0;
- int swap_mode = -1; /* protection bits for swap file */
-#else
- int perm;
-#endif
- int fileformat = 0; /* end-of-line format */
- int keep_fileformat = FALSE;
- int file_readonly;
- linenr_T skip_count = 0;
- linenr_T read_count = 0;
- int msg_save = msg_scroll;
- linenr_T read_no_eol_lnum = 0; /* non-zero lnum when last line of
- * last read was missing the eol */
- int try_mac = (vim_strchr(p_ffs, 'm') != NULL);
- int try_dos = (vim_strchr(p_ffs, 'd') != NULL);
- int try_unix = (vim_strchr(p_ffs, 'x') != NULL);
- int file_rewind = FALSE;
- int can_retry;
- linenr_T conv_error = 0; /* line nr with conversion error */
- linenr_T illegal_byte = 0; /* line nr with illegal byte */
- int keep_dest_enc = FALSE; /* don't retry when char doesn't fit
- in destination encoding */
- int bad_char_behavior = BAD_REPLACE;
- /* BAD_KEEP, BAD_DROP or character to
- * replace with */
- char_u *tmpname = NULL; /* name of 'charconvert' output file */
- int fio_flags = 0;
- char_u *fenc; /* fileencoding to use */
- int fenc_alloced; /* fenc_next is in allocated memory */
- char_u *fenc_next = NULL; /* next item in 'fencs' or NULL */
- int advance_fenc = FALSE;
- long real_size = 0;
-# ifdef USE_ICONV
- iconv_t iconv_fd = (iconv_t)-1; /* descriptor for iconv() or -1 */
- int did_iconv = FALSE; /* TRUE when iconv() failed and trying
- 'charconvert' next */
-# endif
- int converted = FALSE; /* TRUE if conversion done */
- int notconverted = FALSE; /* TRUE if conversion wanted but it
- wasn't possible */
- char_u conv_rest[CONV_RESTLEN];
- int conv_restlen = 0; /* nr of bytes in conv_rest[] */
- buf_T *old_curbuf;
- char_u *old_b_ffname;
- char_u *old_b_fname;
- int using_b_ffname;
- int using_b_fname;
-
- curbuf->b_no_eol_lnum = 0; /* in case it was set by the previous read */
-
- /*
- * If there is no file name yet, use the one for the read file.
- * BF_NOTEDITED is set to reflect this.
- * Don't do this for a read from a filter.
- * Only do this when 'cpoptions' contains the 'f' flag.
- */
- if (curbuf->b_ffname == NULL
- && !filtering
- && fname != NULL
- && vim_strchr(p_cpo, CPO_FNAMER) != NULL
- && !(flags & READ_DUMMY)) {
- if (set_rw_fname(fname, sfname) == FAIL)
- return FAIL;
- }
-
- /* Remember the initial values of curbuf, curbuf->b_ffname and
- * curbuf->b_fname to detect whether they are altered as a result of
- * executing nasty autocommands. Also check if "fname" and "sfname"
- * point to one of these values. */
- old_curbuf = curbuf;
- old_b_ffname = curbuf->b_ffname;
- old_b_fname = curbuf->b_fname;
- using_b_ffname = (fname == curbuf->b_ffname)
- || (sfname == curbuf->b_ffname);
- using_b_fname = (fname == curbuf->b_fname) || (sfname == curbuf->b_fname);
-
- /* After reading a file the cursor line changes but we don't want to
- * display the line. */
- ex_no_reprint = TRUE;
-
- /* don't display the file info for another buffer now */
- need_fileinfo = FALSE;
-
- /*
- * For Unix: Use the short file name whenever possible.
- * Avoids problems with networks and when directory names are changed.
- * Don't do this for MS-DOS, a "cd" in a sub-shell may have moved us to
- * another directory, which we don't detect.
- */
- if (sfname == NULL)
- sfname = fname;
-#if defined(UNIX)
- fname = sfname;
-#endif
-
- /*
- * The BufReadCmd and FileReadCmd events intercept the reading process by
- * executing the associated commands instead.
- */
- if (!filtering && !read_stdin && !read_buffer) {
- pos_T pos;
-
- pos = curbuf->b_op_start;
-
- /* Set '[ mark to the line above where the lines go (line 1 if zero). */
- curbuf->b_op_start.lnum = ((from == 0) ? 1 : from);
- curbuf->b_op_start.col = 0;
-
- if (newfile) {
- if (apply_autocmds_exarg(EVENT_BUFREADCMD, NULL, sfname,
- FALSE, curbuf, eap))
- return aborting() ? FAIL : OK;
- } else if (apply_autocmds_exarg(EVENT_FILEREADCMD, sfname, sfname,
- FALSE, NULL, eap))
- return aborting() ? FAIL : OK;
-
- curbuf->b_op_start = pos;
- }
-
- if ((shortmess(SHM_OVER) || curbuf->b_help) && p_verbose == 0)
- msg_scroll = FALSE; /* overwrite previous file message */
- else
- msg_scroll = TRUE; /* don't overwrite previous file message */
-
- /*
- * If the name ends in a path separator, we can't open it. Check here,
- * because reading the file may actually work, but then creating the swap
- * file may destroy it! Reported on MS-DOS and Win 95.
- * If the name is too long we might crash further on, quit here.
- */
- if (fname != NULL && *fname != NUL) {
- p = fname + STRLEN(fname);
- if (after_pathsep(fname, p) || STRLEN(fname) >= MAXPATHL) {
- filemess(curbuf, fname, (char_u *)_("Illegal file name"), 0);
- msg_end();
- msg_scroll = msg_save;
- return FAIL;
- }
- }
-
- if (!read_stdin && !read_buffer) {
-#ifdef UNIX
- /*
- * On Unix it is possible to read a directory, so we have to
- * check for it before the mch_open().
- */
- perm = os_getperm(fname);
- if (perm >= 0 && !S_ISREG(perm) /* not a regular file ... */
-# ifdef S_ISFIFO
- && !S_ISFIFO(perm) /* ... or fifo */
-# endif
-# ifdef S_ISSOCK
- && !S_ISSOCK(perm) /* ... or socket */
-# endif
-# ifdef OPEN_CHR_FILES
- && !(S_ISCHR(perm) && is_dev_fd_file(fname))
- /* ... or a character special file named /dev/fd/<n> */
-# endif
- ) {
- if (S_ISDIR(perm))
- filemess(curbuf, fname, (char_u *)_("is a directory"), 0);
- else
- filemess(curbuf, fname, (char_u *)_("is not a file"), 0);
- msg_end();
- msg_scroll = msg_save;
- return FAIL;
- }
-#endif
- }
-
- /* Set default or forced 'fileformat' and 'binary'. */
- set_file_options(set_options, eap);
-
- /*
- * When opening a new file we take the readonly flag from the file.
- * Default is r/w, can be set to r/o below.
- * Don't reset it when in readonly mode
- * Only set/reset b_p_ro when BF_CHECK_RO is set.
- */
- check_readonly = (newfile && (curbuf->b_flags & BF_CHECK_RO));
- if (check_readonly && !readonlymode)
- curbuf->b_p_ro = FALSE;
-
- if (newfile && !read_stdin && !read_buffer) {
- /* Remember time of file. */
- FileInfo file_info;
- if (os_get_file_info((char *)fname, &file_info)) {
- buf_store_file_info(curbuf, &file_info);
- curbuf->b_mtime_read = curbuf->b_mtime;
-#ifdef UNIX
- /*
- * Use the protection bits of the original file for the swap file.
- * This makes it possible for others to read the name of the
- * edited file from the swapfile, but only if they can read the
- * edited file.
- * Remove the "write" and "execute" bits for group and others
- * (they must not write the swapfile).
- * Add the "read" and "write" bits for the user, otherwise we may
- * not be able to write to the file ourselves.
- * Setting the bits is done below, after creating the swap file.
- */
- swap_mode = (file_info.stat.st_mode & 0644) | 0600;
-#endif
- } else {
- curbuf->b_mtime = 0;
- curbuf->b_mtime_read = 0;
- curbuf->b_orig_size = 0;
- curbuf->b_orig_mode = 0;
- }
-
- /* Reset the "new file" flag. It will be set again below when the
- * file doesn't exist. */
- curbuf->b_flags &= ~(BF_NEW | BF_NEW_W);
- }
-
- /*
- * Check readonly by trying to open the file for writing.
- * If this fails, we know that the file is readonly.
- */
- file_readonly = FALSE;
- if (!read_buffer && !read_stdin) {
- if (!newfile || readonlymode) {
- file_readonly = TRUE;
- } else if ((fd = mch_open((char *)fname, O_RDWR, 0)) < 0) {
- // opening in readwrite mode failed => file is readonly
- file_readonly = TRUE;
- }
- if (file_readonly == TRUE) {
- // try to open readonly
- fd = mch_open((char *)fname, O_RDONLY, 0);
- }
- }
-
- if (fd < 0) { /* cannot open at all */
- msg_scroll = msg_save;
-#ifndef UNIX
- /*
- * On non-unix systems we can't open a directory, check here.
- */
- perm = os_getperm(fname); /* check if the file exists */
- if (os_isdir(fname)) {
- filemess(curbuf, sfname, (char_u *)_("is a directory"), 0);
- curbuf->b_p_ro = TRUE; /* must use "w!" now */
- } else
-#endif
- if (newfile) {
- if (perm < 0
-#ifdef ENOENT
- && errno == ENOENT
-#endif
- ) {
- /*
- * Set the 'new-file' flag, so that when the file has
- * been created by someone else, a ":w" will complain.
- */
- curbuf->b_flags |= BF_NEW;
-
- /* Create a swap file now, so that other Vims are warned
- * that we are editing this file. Don't do this for a
- * "nofile" or "nowrite" buffer type. */
- if (!bt_dontwrite(curbuf)) {
- check_need_swap(newfile);
- /* SwapExists autocommand may mess things up */
- if (curbuf != old_curbuf
- || (using_b_ffname
- && (old_b_ffname != curbuf->b_ffname))
- || (using_b_fname
- && (old_b_fname != curbuf->b_fname))) {
- EMSG(_(e_auchangedbuf));
- return FAIL;
- }
- }
- if (dir_of_file_exists(fname))
- filemess(curbuf, sfname, (char_u *)_("[New File]"), 0);
- else
- filemess(curbuf, sfname,
- (char_u *)_("[New DIRECTORY]"), 0);
- /* Even though this is a new file, it might have been
- * edited before and deleted. Get the old marks. */
- check_marks_read();
- /* Set forced 'fileencoding'. */
- if (eap != NULL)
- set_forced_fenc(eap);
- apply_autocmds_exarg(EVENT_BUFNEWFILE, sfname, sfname,
- FALSE, curbuf, eap);
- /* remember the current fileformat */
- save_file_ff(curbuf);
-
- if (aborting()) /* autocmds may abort script processing */
- return FAIL;
- return OK; /* a new file is not an error */
- } else {
- filemess(curbuf, sfname, (char_u *)(
-# ifdef EFBIG
- (errno == EFBIG) ? _("[File too big]") :
-# endif
-# ifdef EOVERFLOW
- (errno == EOVERFLOW) ? _("[File too big]") :
-# endif
- _("[Permission Denied]")), 0);
- curbuf->b_p_ro = TRUE; /* must use "w!" now */
- }
- }
-
- return FAIL;
- }
-
- /*
- * Only set the 'ro' flag for readonly files the first time they are
- * loaded. Help files always get readonly mode
- */
- if ((check_readonly && file_readonly) || curbuf->b_help)
- curbuf->b_p_ro = TRUE;
-
- if (set_options) {
- /* Don't change 'eol' if reading from buffer as it will already be
- * correctly set when reading stdin. */
- if (!read_buffer) {
- curbuf->b_p_eol = TRUE;
- curbuf->b_start_eol = TRUE;
- }
- curbuf->b_p_bomb = FALSE;
- curbuf->b_start_bomb = FALSE;
- }
-
- /* Create a swap file now, so that other Vims are warned that we are
- * editing this file.
- * Don't do this for a "nofile" or "nowrite" buffer type. */
- if (!bt_dontwrite(curbuf)) {
- check_need_swap(newfile);
- if (!read_stdin && (curbuf != old_curbuf
- || (using_b_ffname && (old_b_ffname != curbuf->b_ffname))
- || (using_b_fname &&
- (old_b_fname != curbuf->b_fname)))) {
- EMSG(_(e_auchangedbuf));
- if (!read_buffer)
- close(fd);
- return FAIL;
- }
-#ifdef UNIX
- /* Set swap file protection bits after creating it. */
- if (swap_mode > 0 && curbuf->b_ml.ml_mfp != NULL
- && curbuf->b_ml.ml_mfp->mf_fname != NULL)
- (void)os_setperm(curbuf->b_ml.ml_mfp->mf_fname, (long)swap_mode);
-#endif
- }
-
-#if defined(HAS_SWAP_EXISTS_ACTION)
- /* If "Quit" selected at ATTENTION dialog, don't load the file */
- if (swap_exists_action == SEA_QUIT) {
- if (!read_buffer && !read_stdin)
- close(fd);
- return FAIL;
- }
-#endif
-
- ++no_wait_return; /* don't wait for return yet */
-
- /*
- * Set '[ mark to the line above where the lines go (line 1 if zero).
- */
- curbuf->b_op_start.lnum = ((from == 0) ? 1 : from);
- curbuf->b_op_start.col = 0;
-
- if (!read_buffer) {
- int m = msg_scroll;
- int n = msg_scrolled;
-
- /*
- * The file must be closed again, the autocommands may want to change
- * the file before reading it.
- */
- if (!read_stdin)
- close(fd); /* ignore errors */
-
- /*
- * The output from the autocommands should not overwrite anything and
- * should not be overwritten: Set msg_scroll, restore its value if no
- * output was done.
- */
- msg_scroll = TRUE;
- if (filtering)
- apply_autocmds_exarg(EVENT_FILTERREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else if (read_stdin)
- apply_autocmds_exarg(EVENT_STDINREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else if (newfile)
- apply_autocmds_exarg(EVENT_BUFREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEREADPRE, sfname, sfname,
- FALSE, NULL, eap);
- if (msg_scrolled == n)
- msg_scroll = m;
-
- if (aborting()) { /* autocmds may abort script processing */
- --no_wait_return;
- msg_scroll = msg_save;
- curbuf->b_p_ro = TRUE; /* must use "w!" now */
- return FAIL;
- }
- /*
- * Don't allow the autocommands to change the current buffer.
- * Try to re-open the file.
- *
- * Don't allow the autocommands to change the buffer name either
- * (cd for example) if it invalidates fname or sfname.
- */
- if (!read_stdin && (curbuf != old_curbuf
- || (using_b_ffname && (old_b_ffname != curbuf->b_ffname))
- || (using_b_fname && (old_b_fname != curbuf->b_fname))
- || (fd =
- mch_open((char *)fname, O_RDONLY,
- 0)) < 0)) {
- --no_wait_return;
- msg_scroll = msg_save;
- if (fd < 0)
- EMSG(_("E200: *ReadPre autocommands made the file unreadable"));
- else
- EMSG(_("E201: *ReadPre autocommands must not change current buffer"));
- curbuf->b_p_ro = TRUE; /* must use "w!" now */
- return FAIL;
- }
- }
-
- /* Autocommands may add lines to the file, need to check if it is empty */
- wasempty = (curbuf->b_ml.ml_flags & ML_EMPTY);
-
- if (!recoverymode && !filtering && !(flags & READ_DUMMY)) {
- /*
- * Show the user that we are busy reading the input. Sometimes this
- * may take a while. When reading from stdin another program may
- * still be running, don't move the cursor to the last line, unless
- * always using the GUI.
- */
- if (read_stdin) {
- mch_msg(_("Vim: Reading from stdin...\n"));
- } else if (!read_buffer)
- filemess(curbuf, sfname, (char_u *)"", 0);
- }
-
- msg_scroll = FALSE; /* overwrite the file message */
-
- /*
- * Set linecnt now, before the "retry" caused by a wrong guess for
- * fileformat, and after the autocommands, which may change them.
- */
- linecnt = curbuf->b_ml.ml_line_count;
-
- /* "++bad=" argument. */
- if (eap != NULL && eap->bad_char != 0) {
- bad_char_behavior = eap->bad_char;
- if (set_options)
- curbuf->b_bad_char = eap->bad_char;
- } else
- curbuf->b_bad_char = 0;
-
- /*
- * Decide which 'encoding' to use or use first.
- */
- if (eap != NULL && eap->force_enc != 0) {
- fenc = enc_canonize(eap->cmd + eap->force_enc);
- fenc_alloced = TRUE;
- keep_dest_enc = TRUE;
- } else if (curbuf->b_p_bin) {
- fenc = (char_u *)""; /* binary: don't convert */
- fenc_alloced = FALSE;
- } else if (curbuf->b_help) {
- char_u firstline[80];
- int fc;
-
- /* Help files are either utf-8 or latin1. Try utf-8 first, if this
- * fails it must be latin1.
- * Always do this when 'encoding' is "utf-8". Otherwise only do
- * this when needed to avoid [converted] remarks all the time.
- * It is needed when the first line contains non-ASCII characters.
- * That is only in *.??x files. */
- fenc = (char_u *)"latin1";
- c = enc_utf8;
- if (!c && !read_stdin) {
- fc = fname[STRLEN(fname) - 1];
- if (TOLOWER_ASC(fc) == 'x') {
- /* Read the first line (and a bit more). Immediately rewind to
- * the start of the file. If the read() fails "len" is -1. */
- len = read_eintr(fd, firstline, 80);
- lseek(fd, (off_t)0L, SEEK_SET);
- for (p = firstline; p < firstline + len; ++p)
- if (*p >= 0x80) {
- c = TRUE;
- break;
- }
- }
- }
-
- if (c) {
- fenc_next = fenc;
- fenc = (char_u *)"utf-8";
-
- /* When the file is utf-8 but a character doesn't fit in
- * 'encoding' don't retry. In help text editing utf-8 bytes
- * doesn't make sense. */
- if (!enc_utf8)
- keep_dest_enc = TRUE;
- }
- fenc_alloced = FALSE;
- } else if (*p_fencs == NUL) {
- fenc = curbuf->b_p_fenc; /* use format from buffer */
- fenc_alloced = FALSE;
- } else {
- fenc_next = p_fencs; /* try items in 'fileencodings' */
- fenc = next_fenc(&fenc_next);
- fenc_alloced = TRUE;
- }
-
- /*
- * Jump back here to retry reading the file in different ways.
- * Reasons to retry:
- * - encoding conversion failed: try another one from "fenc_next"
- * - BOM detected and fenc was set, need to setup conversion
- * - "fileformat" check failed: try another
- *
- * Variables set for special retry actions:
- * "file_rewind" Rewind the file to start reading it again.
- * "advance_fenc" Advance "fenc" using "fenc_next".
- * "skip_read" Re-use already read bytes (BOM detected).
- * "did_iconv" iconv() conversion failed, try 'charconvert'.
- * "keep_fileformat" Don't reset "fileformat".
- *
- * Other status indicators:
- * "tmpname" When != NULL did conversion with 'charconvert'.
- * Output file has to be deleted afterwards.
- * "iconv_fd" When != -1 did conversion with iconv().
- */
-retry:
-
- if (file_rewind) {
- if (read_buffer) {
- read_buf_lnum = 1;
- read_buf_col = 0;
- } else if (read_stdin || lseek(fd, (off_t)0L, SEEK_SET) != 0) {
- /* Can't rewind the file, give up. */
- error = TRUE;
- goto failed;
- }
- /* Delete the previously read lines. */
- while (lnum > from)
- ml_delete(lnum--, FALSE);
- file_rewind = FALSE;
- if (set_options) {
- curbuf->b_p_bomb = FALSE;
- curbuf->b_start_bomb = FALSE;
- }
- conv_error = 0;
- }
-
- if (cryptkey != NULL)
- /* Need to reset the state, but keep the key, don't want to ask for it
- * again. */
- crypt_pop_state();
-
- /*
- * When retrying with another "fenc" and the first time "fileformat"
- * will be reset.
- */
- if (keep_fileformat)
- keep_fileformat = FALSE;
- else {
- if (eap != NULL && eap->force_ff != 0) {
- fileformat = get_fileformat_force(curbuf, eap);
- try_unix = try_dos = try_mac = FALSE;
- } else if (curbuf->b_p_bin)
- fileformat = EOL_UNIX; /* binary: use Unix format */
- else if (*p_ffs == NUL)
- fileformat = get_fileformat(curbuf); /* use format from buffer */
- else
- fileformat = EOL_UNKNOWN; /* detect from file */
- }
-
-# ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1) {
- /* aborted conversion with iconv(), close the descriptor */
- iconv_close(iconv_fd);
- iconv_fd = (iconv_t)-1;
- }
-# endif
-
- if (advance_fenc) {
- /*
- * Try the next entry in 'fileencodings'.
- */
- advance_fenc = FALSE;
-
- if (eap != NULL && eap->force_enc != 0) {
- /* Conversion given with "++cc=" wasn't possible, read
- * without conversion. */
- notconverted = TRUE;
- conv_error = 0;
- if (fenc_alloced)
- free(fenc);
- fenc = (char_u *)"";
- fenc_alloced = FALSE;
- } else {
- if (fenc_alloced)
- free(fenc);
- if (fenc_next != NULL) {
- fenc = next_fenc(&fenc_next);
- fenc_alloced = (fenc_next != NULL);
- } else {
- fenc = (char_u *)"";
- fenc_alloced = FALSE;
- }
- }
- if (tmpname != NULL) {
- os_remove((char *)tmpname); // delete converted file
- free(tmpname);
- tmpname = NULL;
- }
- }
-
- /*
- * Conversion may be required when the encoding of the file is different
- * from 'encoding' or 'encoding' is UTF-16, UCS-2 or UCS-4.
- */
- fio_flags = 0;
- converted = need_conversion(fenc);
- if (converted) {
-
- /* "ucs-bom" means we need to check the first bytes of the file
- * for a BOM. */
- if (STRCMP(fenc, ENC_UCSBOM) == 0)
- fio_flags = FIO_UCSBOM;
-
- /*
- * Check if UCS-2/4 or Latin1 to UTF-8 conversion needs to be
- * done. This is handled below after read(). Prepare the
- * fio_flags to avoid having to parse the string each time.
- * Also check for Unicode to Latin1 conversion, because iconv()
- * appears not to handle this correctly. This works just like
- * conversion to UTF-8 except how the resulting character is put in
- * the buffer.
- */
- else if (enc_utf8 || STRCMP(p_enc, "latin1") == 0)
- fio_flags = get_fio_flags(fenc);
-
-
-
-# ifdef USE_ICONV
- /*
- * Try using iconv() if we can't convert internally.
- */
- if (fio_flags == 0
- && !did_iconv
- )
- iconv_fd = (iconv_t)my_iconv_open(
- enc_utf8 ? (char_u *)"utf-8" : p_enc, fenc);
-# endif
-
- /*
- * Use the 'charconvert' expression when conversion is required
- * and we can't do it internally or with iconv().
- */
- if (fio_flags == 0 && !read_stdin && !read_buffer && *p_ccv != NUL
-# ifdef USE_ICONV
- && iconv_fd == (iconv_t)-1
-# endif
- ) {
-# ifdef USE_ICONV
- did_iconv = FALSE;
-# endif
- /* Skip conversion when it's already done (retry for wrong
- * "fileformat"). */
- if (tmpname == NULL) {
- tmpname = readfile_charconvert(fname, fenc, &fd);
- if (tmpname == NULL) {
- /* Conversion failed. Try another one. */
- advance_fenc = TRUE;
- if (fd < 0) {
- /* Re-opening the original file failed! */
- EMSG(_("E202: Conversion made file unreadable!"));
- error = TRUE;
- goto failed;
- }
- goto retry;
- }
- }
- } else {
- if (fio_flags == 0
-# ifdef USE_ICONV
- && iconv_fd == (iconv_t)-1
-# endif
- ) {
- /* Conversion wanted but we can't.
- * Try the next conversion in 'fileencodings' */
- advance_fenc = TRUE;
- goto retry;
- }
- }
- }
-
- /* Set "can_retry" when it's possible to rewind the file and try with
- * another "fenc" value. It's FALSE when no other "fenc" to try, reading
- * stdin or fixed at a specific encoding. */
- can_retry = (*fenc != NUL && !read_stdin && !keep_dest_enc);
-
- if (!skip_read) {
- linerest = 0;
- filesize = 0;
- skip_count = lines_to_skip;
- read_count = lines_to_read;
- conv_restlen = 0;
- read_undo_file = (newfile && (flags & READ_KEEP_UNDO) == 0
- && curbuf->b_ffname != NULL
- && curbuf->b_p_udf
- && !filtering
- && !read_stdin
- && !read_buffer);
- if (read_undo_file)
- sha256_start(&sha_ctx);
- }
-
- while (!error && !got_int) {
- /*
- * We allocate as much space for the file as we can get, plus
- * space for the old line plus room for one terminating NUL.
- * The amount is limited by the fact that read() only can read
- * upto max_unsigned characters (and other things).
- */
- {
- if (!skip_read) {
- size = 0x10000L; /* use buffer >= 64K */
-
- for (; size >= 10; size /= 2) {
- new_buffer = verbose_try_malloc((size_t)size + (size_t)linerest + 1);
- if (new_buffer) {
- break;
- }
- }
- if (new_buffer == NULL) {
- error = TRUE;
- break;
- }
- if (linerest) /* copy characters from the previous buffer */
- memmove(new_buffer, ptr - linerest, (size_t)linerest);
- free(buffer);
- buffer = new_buffer;
- ptr = buffer + linerest;
- line_start = buffer;
-
- /* May need room to translate into.
- * For iconv() we don't really know the required space, use a
- * factor ICONV_MULT.
- * latin1 to utf-8: 1 byte becomes up to 2 bytes
- * utf-16 to utf-8: 2 bytes become up to 3 bytes, 4 bytes
- * become up to 4 bytes, size must be multiple of 2
- * ucs-2 to utf-8: 2 bytes become up to 3 bytes, size must be
- * multiple of 2
- * ucs-4 to utf-8: 4 bytes become up to 6 bytes, size must be
- * multiple of 4 */
- real_size = (int)size;
-# ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1)
- size = size / ICONV_MULT;
- else
-# endif
- if (fio_flags & FIO_LATIN1)
- size = size / 2;
- else if (fio_flags & (FIO_UCS2 | FIO_UTF16))
- size = (size * 2 / 3) & ~1;
- else if (fio_flags & FIO_UCS4)
- size = (size * 2 / 3) & ~3;
- else if (fio_flags == FIO_UCSBOM)
- size = size / ICONV_MULT; /* worst case */
-
- if (conv_restlen > 0) {
- /* Insert unconverted bytes from previous line. */
- memmove(ptr, conv_rest, conv_restlen);
- ptr += conv_restlen;
- size -= conv_restlen;
- }
-
- if (read_buffer) {
- /*
- * Read bytes from curbuf. Used for converting text read
- * from stdin.
- */
- if (read_buf_lnum > from)
- size = 0;
- else {
- int n, ni;
- long tlen;
-
- tlen = 0;
- for (;; ) {
- p = ml_get(read_buf_lnum) + read_buf_col;
- n = (int)STRLEN(p);
- if ((int)tlen + n + 1 > size) {
- /* Filled up to "size", append partial line.
- * Change NL to NUL to reverse the effect done
- * below. */
- n = (int)(size - tlen);
- for (ni = 0; ni < n; ++ni) {
- if (p[ni] == NL)
- ptr[tlen++] = NUL;
- else
- ptr[tlen++] = p[ni];
- }
- read_buf_col += n;
- break;
- } else {
- /* Append whole line and new-line. Change NL
- * to NUL to reverse the effect done below. */
- for (ni = 0; ni < n; ++ni) {
- if (p[ni] == NL)
- ptr[tlen++] = NUL;
- else
- ptr[tlen++] = p[ni];
- }
- ptr[tlen++] = NL;
- read_buf_col = 0;
- if (++read_buf_lnum > from) {
- /* When the last line didn't have an
- * end-of-line don't add it now either. */
- if (!curbuf->b_p_eol)
- --tlen;
- size = tlen;
- break;
- }
- }
- }
- }
- } else {
- /*
- * Read bytes from the file.
- */
- size = read_eintr(fd, ptr, size);
- }
-
- if (size <= 0) {
- if (size < 0) /* read error */
- error = TRUE;
- else if (conv_restlen > 0) {
- /*
- * Reached end-of-file but some trailing bytes could
- * not be converted. Truncated file?
- */
-
- /* When we did a conversion report an error. */
- if (fio_flags != 0
-# ifdef USE_ICONV
- || iconv_fd != (iconv_t)-1
-# endif
- ) {
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = curbuf->b_ml.ml_line_count
- - linecnt + 1;
- }
- /* Remember the first linenr with an illegal byte */
- else if (illegal_byte == 0)
- illegal_byte = curbuf->b_ml.ml_line_count
- - linecnt + 1;
- if (bad_char_behavior == BAD_DROP) {
- *(ptr - conv_restlen) = NUL;
- conv_restlen = 0;
- } else {
- /* Replace the trailing bytes with the replacement
- * character if we were converting; if we weren't,
- * leave the UTF8 checking code to do it, as it
- * works slightly differently. */
- if (bad_char_behavior != BAD_KEEP && (fio_flags != 0
-# ifdef USE_ICONV
- || iconv_fd != (iconv_t)-1
-# endif
- )) {
- while (conv_restlen > 0) {
- *(--ptr) = bad_char_behavior;
- --conv_restlen;
- }
- }
- fio_flags = 0; /* don't convert this */
-# ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1) {
- iconv_close(iconv_fd);
- iconv_fd = (iconv_t)-1;
- }
-# endif
- }
- }
- }
-
- /*
- * At start of file: Check for magic number of encryption.
- */
- if (filesize == 0)
- cryptkey = check_for_cryptkey(cryptkey, ptr, &size,
- &filesize, newfile, sfname,
- &did_ask_for_key);
- /*
- * Decrypt the read bytes.
- */
- if (cryptkey != NULL && size > 0)
- crypt_decode(ptr, size);
- }
- skip_read = FALSE;
-
- /*
- * At start of file (or after crypt magic number): Check for BOM.
- * Also check for a BOM for other Unicode encodings, but not after
- * converting with 'charconvert' or when a BOM has already been
- * found.
- */
- if ((filesize == 0
- || (filesize == (CRYPT_MAGIC_LEN
- + crypt_salt_len[use_crypt_method]
- + crypt_seed_len[use_crypt_method])
- && cryptkey != NULL)
- )
- && (fio_flags == FIO_UCSBOM
- || (!curbuf->b_p_bomb
- && tmpname == NULL
- && (*fenc == 'u' || (*fenc == NUL && enc_utf8))))) {
- char_u *ccname;
- int blen;
-
- /* no BOM detection in a short file or in binary mode */
- if (size < 2 || curbuf->b_p_bin)
- ccname = NULL;
- else
- ccname = check_for_bom(ptr, size, &blen,
- fio_flags == FIO_UCSBOM ? FIO_ALL : get_fio_flags(fenc));
- if (ccname != NULL) {
- /* Remove BOM from the text */
- filesize += blen;
- size -= blen;
- memmove(ptr, ptr + blen, (size_t)size);
- if (set_options) {
- curbuf->b_p_bomb = TRUE;
- curbuf->b_start_bomb = TRUE;
- }
- }
-
- if (fio_flags == FIO_UCSBOM) {
- if (ccname == NULL) {
- /* No BOM detected: retry with next encoding. */
- advance_fenc = TRUE;
- } else {
- /* BOM detected: set "fenc" and jump back */
- if (fenc_alloced)
- free(fenc);
- fenc = ccname;
- fenc_alloced = FALSE;
- }
- /* retry reading without getting new bytes or rewinding */
- skip_read = TRUE;
- goto retry;
- }
- }
-
- /* Include not converted bytes. */
- ptr -= conv_restlen;
- size += conv_restlen;
- conv_restlen = 0;
- /*
- * Break here for a read error or end-of-file.
- */
- if (size <= 0)
- break;
-
-
-# ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1) {
- /*
- * Attempt conversion of the read bytes to 'encoding' using
- * iconv().
- */
- const char *fromp;
- char *top;
- size_t from_size;
- size_t to_size;
-
- fromp = (char *)ptr;
- from_size = size;
- ptr += size;
- top = (char *)ptr;
- to_size = real_size - size;
-
- /*
- * If there is conversion error or not enough room try using
- * another conversion. Except for when there is no
- * alternative (help files).
- */
- while ((iconv(iconv_fd, (void *)&fromp, &from_size,
- &top, &to_size)
- == (size_t)-1 && ICONV_ERRNO != ICONV_EINVAL)
- || from_size > CONV_RESTLEN) {
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = readfile_linenr(linecnt,
- ptr, (char_u *)top);
-
- /* Deal with a bad byte and continue with the next. */
- ++fromp;
- --from_size;
- if (bad_char_behavior == BAD_KEEP) {
- *top++ = *(fromp - 1);
- --to_size;
- } else if (bad_char_behavior != BAD_DROP) {
- *top++ = bad_char_behavior;
- --to_size;
- }
- }
-
- if (from_size > 0) {
- /* Some remaining characters, keep them for the next
- * round. */
- memmove(conv_rest, (char_u *)fromp, from_size);
- conv_restlen = (int)from_size;
- }
-
- /* move the linerest to before the converted characters */
- line_start = ptr - linerest;
- memmove(line_start, buffer, (size_t)linerest);
- size = (long)((char_u *)top - ptr);
- }
-# endif
-
-# ifdef MACOS_CONVERT
- if (fio_flags & FIO_MACROMAN) {
- /*
- * Conversion from Apple MacRoman char encoding to UTF-8 or
- * latin1. This is in os_mac_conv.c.
- */
- if (macroman2enc(ptr, &size, real_size) == FAIL)
- goto rewind_retry;
- } else
-# endif
- if (fio_flags != 0) {
- int u8c;
- char_u *dest;
- char_u *tail = NULL;
-
- /*
- * "enc_utf8" set: Convert Unicode or Latin1 to UTF-8.
- * "enc_utf8" not set: Convert Unicode to Latin1.
- * Go from end to start through the buffer, because the number
- * of bytes may increase.
- * "dest" points to after where the UTF-8 bytes go, "p" points
- * to after the next character to convert.
- */
- dest = ptr + real_size;
- if (fio_flags == FIO_LATIN1 || fio_flags == FIO_UTF8) {
- p = ptr + size;
- if (fio_flags == FIO_UTF8) {
- /* Check for a trailing incomplete UTF-8 sequence */
- tail = ptr + size - 1;
- while (tail > ptr && (*tail & 0xc0) == 0x80)
- --tail;
- if (tail + utf_byte2len(*tail) <= ptr + size)
- tail = NULL;
- else
- p = tail;
- }
- } else if (fio_flags & (FIO_UCS2 | FIO_UTF16)) {
- /* Check for a trailing byte */
- p = ptr + (size & ~1);
- if (size & 1)
- tail = p;
- if ((fio_flags & FIO_UTF16) && p > ptr) {
- /* Check for a trailing leading word */
- if (fio_flags & FIO_ENDIAN_L) {
- u8c = (*--p << 8);
- u8c += *--p;
- } else {
- u8c = *--p;
- u8c += (*--p << 8);
- }
- if (u8c >= 0xd800 && u8c <= 0xdbff)
- tail = p;
- else
- p += 2;
- }
- } else { /* FIO_UCS4 */
- /* Check for trailing 1, 2 or 3 bytes */
- p = ptr + (size & ~3);
- if (size & 3)
- tail = p;
- }
-
- /* If there is a trailing incomplete sequence move it to
- * conv_rest[]. */
- if (tail != NULL) {
- conv_restlen = (int)((ptr + size) - tail);
- memmove(conv_rest, (char_u *)tail, conv_restlen);
- size -= conv_restlen;
- }
-
-
- while (p > ptr) {
- if (fio_flags & FIO_LATIN1)
- u8c = *--p;
- else if (fio_flags & (FIO_UCS2 | FIO_UTF16)) {
- if (fio_flags & FIO_ENDIAN_L) {
- u8c = (*--p << 8);
- u8c += *--p;
- } else {
- u8c = *--p;
- u8c += (*--p << 8);
- }
- if ((fio_flags & FIO_UTF16)
- && u8c >= 0xdc00 && u8c <= 0xdfff) {
- int u16c;
-
- if (p == ptr) {
- /* Missing leading word. */
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = readfile_linenr(linecnt,
- ptr, p);
- if (bad_char_behavior == BAD_DROP)
- continue;
- if (bad_char_behavior != BAD_KEEP)
- u8c = bad_char_behavior;
- }
-
- /* found second word of double-word, get the first
- * word and compute the resulting character */
- if (fio_flags & FIO_ENDIAN_L) {
- u16c = (*--p << 8);
- u16c += *--p;
- } else {
- u16c = *--p;
- u16c += (*--p << 8);
- }
- u8c = 0x10000 + ((u16c & 0x3ff) << 10)
- + (u8c & 0x3ff);
-
- /* Check if the word is indeed a leading word. */
- if (u16c < 0xd800 || u16c > 0xdbff) {
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = readfile_linenr(linecnt,
- ptr, p);
- if (bad_char_behavior == BAD_DROP)
- continue;
- if (bad_char_behavior != BAD_KEEP)
- u8c = bad_char_behavior;
- }
- }
- } else if (fio_flags & FIO_UCS4) {
- if (fio_flags & FIO_ENDIAN_L) {
- u8c = (*--p << 24);
- u8c += (*--p << 16);
- u8c += (*--p << 8);
- u8c += *--p;
- } else { /* big endian */
- u8c = *--p;
- u8c += (*--p << 8);
- u8c += (*--p << 16);
- u8c += (*--p << 24);
- }
- } else { /* UTF-8 */
- if (*--p < 0x80)
- u8c = *p;
- else {
- len = utf_head_off(ptr, p);
- p -= len;
- u8c = utf_ptr2char(p);
- if (len == 0) {
- /* Not a valid UTF-8 character, retry with
- * another fenc when possible, otherwise just
- * report the error. */
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = readfile_linenr(linecnt,
- ptr, p);
- if (bad_char_behavior == BAD_DROP)
- continue;
- if (bad_char_behavior != BAD_KEEP)
- u8c = bad_char_behavior;
- }
- }
- }
- if (enc_utf8) { /* produce UTF-8 */
- dest -= utf_char2len(u8c);
- (void)utf_char2bytes(u8c, dest);
- } else { /* produce Latin1 */
- --dest;
- if (u8c >= 0x100) {
- /* character doesn't fit in latin1, retry with
- * another fenc when possible, otherwise just
- * report the error. */
- if (can_retry)
- goto rewind_retry;
- if (conv_error == 0)
- conv_error = readfile_linenr(linecnt, ptr, p);
- if (bad_char_behavior == BAD_DROP)
- ++dest;
- else if (bad_char_behavior == BAD_KEEP)
- *dest = u8c;
- else if (eap != NULL && eap->bad_char != 0)
- *dest = bad_char_behavior;
- else
- *dest = 0xBF;
- } else
- *dest = u8c;
- }
- }
-
- /* move the linerest to before the converted characters */
- line_start = dest - linerest;
- memmove(line_start, buffer, (size_t)linerest);
- size = (long)((ptr + real_size) - dest);
- ptr = dest;
- } else if (enc_utf8 && !curbuf->b_p_bin) {
- int incomplete_tail = FALSE;
-
- /* Reading UTF-8: Check if the bytes are valid UTF-8. */
- for (p = ptr;; ++p) {
- int todo = (int)((ptr + size) - p);
- int l;
-
- if (todo <= 0)
- break;
- if (*p >= 0x80) {
- /* A length of 1 means it's an illegal byte. Accept
- * an incomplete character at the end though, the next
- * read() will get the next bytes, we'll check it
- * then. */
- l = utf_ptr2len_len(p, todo);
- if (l > todo && !incomplete_tail) {
- /* Avoid retrying with a different encoding when
- * a truncated file is more likely, or attempting
- * to read the rest of an incomplete sequence when
- * we have already done so. */
- if (p > ptr || filesize > 0)
- incomplete_tail = TRUE;
- /* Incomplete byte sequence, move it to conv_rest[]
- * and try to read the rest of it, unless we've
- * already done so. */
- if (p > ptr) {
- conv_restlen = todo;
- memmove(conv_rest, p, conv_restlen);
- size -= conv_restlen;
- break;
- }
- }
- if (l == 1 || l > todo) {
- /* Illegal byte. If we can try another encoding
- * do that, unless at EOF where a truncated
- * file is more likely than a conversion error. */
- if (can_retry && !incomplete_tail)
- break;
-# ifdef USE_ICONV
- /* When we did a conversion report an error. */
- if (iconv_fd != (iconv_t)-1 && conv_error == 0)
- conv_error = readfile_linenr(linecnt, ptr, p);
-# endif
- /* Remember the first linenr with an illegal byte */
- if (conv_error == 0 && illegal_byte == 0)
- illegal_byte = readfile_linenr(linecnt, ptr, p);
-
- /* Drop, keep or replace the bad byte. */
- if (bad_char_behavior == BAD_DROP) {
- memmove(p, p + 1, todo - 1);
- --p;
- --size;
- } else if (bad_char_behavior != BAD_KEEP)
- *p = bad_char_behavior;
- } else
- p += l - 1;
- }
- }
- if (p < ptr + size && !incomplete_tail) {
- /* Detected a UTF-8 error. */
-rewind_retry:
- /* Retry reading with another conversion. */
-# if defined(FEAT_EVAL) && defined(USE_ICONV)
- if (*p_ccv != NUL && iconv_fd != (iconv_t)-1)
- /* iconv() failed, try 'charconvert' */
- did_iconv = TRUE;
- else
-# endif
- /* use next item from 'fileencodings' */
- advance_fenc = TRUE;
- file_rewind = TRUE;
- goto retry;
- }
- }
-
- /* count the number of characters (after conversion!) */
- filesize += size;
-
- /*
- * when reading the first part of a file: guess EOL type
- */
- if (fileformat == EOL_UNKNOWN) {
- /* First try finding a NL, for Dos and Unix */
- if (try_dos || try_unix) {
- for (p = ptr; p < ptr + size; ++p) {
- if (*p == NL) {
- if (!try_unix
- || (try_dos && p > ptr && p[-1] == CAR))
- fileformat = EOL_DOS;
- else
- fileformat = EOL_UNIX;
- break;
- }
- }
-
- /* Don't give in to EOL_UNIX if EOL_MAC is more likely */
- if (fileformat == EOL_UNIX && try_mac) {
- /* Need to reset the counters when retrying fenc. */
- try_mac = 1;
- try_unix = 1;
- for (; p >= ptr && *p != CAR; p--)
- ;
- if (p >= ptr) {
- for (p = ptr; p < ptr + size; ++p) {
- if (*p == NL)
- try_unix++;
- else if (*p == CAR)
- try_mac++;
- }
- if (try_mac > try_unix)
- fileformat = EOL_MAC;
- }
- }
- }
-
- /* No NL found: may use Mac format */
- if (fileformat == EOL_UNKNOWN && try_mac)
- fileformat = EOL_MAC;
-
- /* Still nothing found? Use first format in 'ffs' */
- if (fileformat == EOL_UNKNOWN)
- fileformat = default_fileformat();
-
- // May set 'p_ff' if editing a new file.
- if (set_options) {
- set_fileformat(fileformat, OPT_LOCAL);
- }
- }
- }
-
- /*
- * This loop is executed once for every character read.
- * Keep it fast!
- */
- if (fileformat == EOL_MAC) {
- --ptr;
- while (++ptr, --size >= 0) {
- /* catch most common case first */
- if ((c = *ptr) != NUL && c != CAR && c != NL)
- continue;
- if (c == NUL)
- *ptr = NL; /* NULs are replaced by newlines! */
- else if (c == NL)
- *ptr = CAR; /* NLs are replaced by CRs! */
- else {
- if (skip_count == 0) {
- *ptr = NUL; /* end of line */
- len = (colnr_T) (ptr - line_start + 1);
- if (ml_append(lnum, line_start, len, newfile) == FAIL) {
- error = TRUE;
- break;
- }
- if (read_undo_file)
- sha256_update(&sha_ctx, line_start, len);
- ++lnum;
- if (--read_count == 0) {
- error = TRUE; /* break loop */
- line_start = ptr; /* nothing left to write */
- break;
- }
- } else
- --skip_count;
- line_start = ptr + 1;
- }
- }
- } else {
- --ptr;
- while (++ptr, --size >= 0) {
- if ((c = *ptr) != NUL && c != NL) /* catch most common case */
- continue;
- if (c == NUL)
- *ptr = NL; /* NULs are replaced by newlines! */
- else {
- if (skip_count == 0) {
- *ptr = NUL; /* end of line */
- len = (colnr_T)(ptr - line_start + 1);
- if (fileformat == EOL_DOS) {
- if (ptr[-1] == CAR) { /* remove CR */
- ptr[-1] = NUL;
- --len;
- }
- /*
- * Reading in Dos format, but no CR-LF found!
- * When 'fileformats' includes "unix", delete all
- * the lines read so far and start all over again.
- * Otherwise give an error message later.
- */
- else if (ff_error != EOL_DOS) {
- if ( try_unix
- && !read_stdin
- && (read_buffer
- || lseek(fd, (off_t)0L, SEEK_SET) == 0)) {
- fileformat = EOL_UNIX;
- if (set_options)
- set_fileformat(EOL_UNIX, OPT_LOCAL);
- file_rewind = TRUE;
- keep_fileformat = TRUE;
- goto retry;
- }
- ff_error = EOL_DOS;
- }
- }
- if (ml_append(lnum, line_start, len, newfile) == FAIL) {
- error = TRUE;
- break;
- }
- if (read_undo_file)
- sha256_update(&sha_ctx, line_start, len);
- ++lnum;
- if (--read_count == 0) {
- error = TRUE; /* break loop */
- line_start = ptr; /* nothing left to write */
- break;
- }
- } else
- --skip_count;
- line_start = ptr + 1;
- }
- }
- }
- linerest = (long)(ptr - line_start);
- ui_breakcheck();
- }
-
-failed:
- /* not an error, max. number of lines reached */
- if (error && read_count == 0)
- error = FALSE;
-
- /*
- * If we get EOF in the middle of a line, note the fact and
- * complete the line ourselves.
- * In Dos format ignore a trailing CTRL-Z, unless 'binary' set.
- */
- if (!error
- && !got_int
- && linerest != 0
- && !(!curbuf->b_p_bin
- && fileformat == EOL_DOS
- && *line_start == Ctrl_Z
- && ptr == line_start + 1)) {
- /* remember for when writing */
- if (set_options)
- curbuf->b_p_eol = FALSE;
- *ptr = NUL;
- len = (colnr_T)(ptr - line_start + 1);
- if (ml_append(lnum, line_start, len, newfile) == FAIL)
- error = TRUE;
- else {
- if (read_undo_file)
- sha256_update(&sha_ctx, line_start, len);
- read_no_eol_lnum = ++lnum;
- }
- }
-
- if (set_options)
- save_file_ff(curbuf); /* remember the current file format */
-
- crypt_method_used = use_crypt_method;
- if (cryptkey != NULL) {
- crypt_pop_state();
- if (cryptkey != curbuf->b_p_key)
- free_crypt_key(cryptkey);
- /* don't set cryptkey to NULL, it's used below as a flag that
- * encryption was used */
- }
-
- /* If editing a new file: set 'fenc' for the current buffer.
- * Also for ":read ++edit file". */
- if (set_options)
- set_string_option_direct((char_u *)"fenc", -1, fenc,
- OPT_FREE|OPT_LOCAL, 0);
- if (fenc_alloced)
- free(fenc);
-# ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1) {
- iconv_close(iconv_fd);
- iconv_fd = (iconv_t)-1;
- }
-# endif
-
- if (!read_buffer && !read_stdin)
- close(fd); /* errors are ignored */
-#ifdef HAVE_FD_CLOEXEC
- else {
- int fdflags = fcntl(fd, F_GETFD);
- if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0)
- fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC);
- }
-#endif
- free(buffer);
-
-#ifdef HAVE_DUP
- if (read_stdin) {
- /* Use stderr for stdin, makes shell commands work. */
- close(0);
- ignored = dup(2);
- }
-#endif
-
- if (tmpname != NULL) {
- os_remove((char *)tmpname); // delete converted file
- free(tmpname);
- }
- --no_wait_return; /* may wait for return now */
-
- /*
- * In recovery mode everything but autocommands is skipped.
- */
- if (!recoverymode) {
- /* need to delete the last line, which comes from the empty buffer */
- if (newfile && wasempty && !(curbuf->b_ml.ml_flags & ML_EMPTY)) {
- ml_delete(curbuf->b_ml.ml_line_count, FALSE);
- --linecnt;
- }
- linecnt = curbuf->b_ml.ml_line_count - linecnt;
- if (filesize == 0)
- linecnt = 0;
- if (newfile || read_buffer) {
- redraw_curbuf_later(NOT_VALID);
- /* After reading the text into the buffer the diff info needs to
- * be updated. */
- diff_invalidate(curbuf);
- /* All folds in the window are invalid now. Mark them for update
- * before triggering autocommands. */
- foldUpdateAll(curwin);
- } else if (linecnt) /* appended at least one line */
- appended_lines_mark(from, linecnt);
-
- /*
- * If we were reading from the same terminal as where messages go,
- * the screen will have been messed up.
- * Switch on raw mode now and clear the screen.
- */
- if (read_stdin) {
- settmode(TMODE_RAW); /* set to raw mode */
- starttermcap();
- screenclear();
- }
-
- if (got_int) {
- if (!(flags & READ_DUMMY)) {
- filemess(curbuf, sfname, (char_u *)_(e_interr), 0);
- if (newfile)
- curbuf->b_p_ro = TRUE; /* must use "w!" now */
- }
- msg_scroll = msg_save;
- check_marks_read();
- return OK; /* an interrupt isn't really an error */
- }
-
- if (!filtering && !(flags & READ_DUMMY)) {
- msg_add_fname(curbuf, sfname); /* fname in IObuff with quotes */
- c = FALSE;
-
-#ifdef UNIX
-# ifdef S_ISFIFO
- if (S_ISFIFO(perm)) { /* fifo or socket */
- STRCAT(IObuff, _("[fifo/socket]"));
- c = TRUE;
- }
-# else
-# ifdef S_IFIFO
- if ((perm & S_IFMT) == S_IFIFO) { /* fifo */
- STRCAT(IObuff, _("[fifo]"));
- c = TRUE;
- }
-# endif
-# ifdef S_IFSOCK
- if ((perm & S_IFMT) == S_IFSOCK) { /* or socket */
- STRCAT(IObuff, _("[socket]"));
- c = TRUE;
- }
-# endif
-# endif
-# ifdef OPEN_CHR_FILES
- if (S_ISCHR(perm)) { /* or character special */
- STRCAT(IObuff, _("[character special]"));
- c = TRUE;
- }
-# endif
-#endif
- if (curbuf->b_p_ro) {
- STRCAT(IObuff, shortmess(SHM_RO) ? _("[RO]") : _("[readonly]"));
- c = TRUE;
- }
- if (read_no_eol_lnum) {
- msg_add_eol();
- c = TRUE;
- }
- if (ff_error == EOL_DOS) {
- STRCAT(IObuff, _("[CR missing]"));
- c = TRUE;
- }
- if (split) {
- STRCAT(IObuff, _("[long lines split]"));
- c = TRUE;
- }
- if (notconverted) {
- STRCAT(IObuff, _("[NOT converted]"));
- c = TRUE;
- } else if (converted) {
- STRCAT(IObuff, _("[converted]"));
- c = TRUE;
- }
- if (cryptkey != NULL) {
- if (crypt_method_used == 1)
- STRCAT(IObuff, _("[blowfish]"));
- else
- STRCAT(IObuff, _("[crypted]"));
- c = TRUE;
- }
- if (conv_error != 0) {
- sprintf((char *)IObuff + STRLEN(IObuff),
- _("[CONVERSION ERROR in line %" PRId64 "]"), (int64_t)conv_error);
- c = TRUE;
- } else if (illegal_byte > 0) {
- sprintf((char *)IObuff + STRLEN(IObuff),
- _("[ILLEGAL BYTE in line %" PRId64 "]"), (int64_t)illegal_byte);
- c = TRUE;
- } else if (error) {
- STRCAT(IObuff, _("[READ ERRORS]"));
- c = TRUE;
- }
- if (msg_add_fileformat(fileformat))
- c = TRUE;
- if (cryptkey != NULL)
- msg_add_lines(c, (long)linecnt, filesize
- - CRYPT_MAGIC_LEN
- - crypt_salt_len[use_crypt_method]
- - crypt_seed_len[use_crypt_method]);
- else
- msg_add_lines(c, (long)linecnt, filesize);
-
- free(keep_msg);
- keep_msg = NULL;
- msg_scrolled_ign = TRUE;
- p = msg_trunc_attr(IObuff, FALSE, 0);
- if (read_stdin || read_buffer || restart_edit != 0
- || (msg_scrolled != 0 && !need_wait_return))
- /* Need to repeat the message after redrawing when:
- * - When reading from stdin (the screen will be cleared next).
- * - When restart_edit is set (otherwise there will be a delay
- * before redrawing).
- * - When the screen was scrolled but there is no wait-return
- * prompt. */
- set_keep_msg(p, 0);
- msg_scrolled_ign = FALSE;
- }
-
- /* with errors writing the file requires ":w!" */
- if (newfile && (error
- || conv_error != 0
- || (illegal_byte > 0 && bad_char_behavior != BAD_KEEP)
- ))
- curbuf->b_p_ro = TRUE;
-
- u_clearline(); /* cannot use "U" command after adding lines */
-
- /*
- * In Ex mode: cursor at last new line.
- * Otherwise: cursor at first new line.
- */
- if (exmode_active)
- curwin->w_cursor.lnum = from + linecnt;
- else
- curwin->w_cursor.lnum = from + 1;
- check_cursor_lnum();
- beginline(BL_WHITE | BL_FIX); /* on first non-blank */
-
- /*
- * Set '[ and '] marks to the newly read lines.
- */
- curbuf->b_op_start.lnum = from + 1;
- curbuf->b_op_start.col = 0;
- curbuf->b_op_end.lnum = from + linecnt;
- curbuf->b_op_end.col = 0;
-
- }
- msg_scroll = msg_save;
-
- /*
- * Get the marks before executing autocommands, so they can be used there.
- */
- check_marks_read();
-
- /*
- * Trick: We remember if the last line of the read didn't have
- * an eol even when 'binary' is off, for when writing it again with
- * 'binary' on. This is required for
- * ":autocmd FileReadPost *.gz set bin|'[,']!gunzip" to work.
- */
- curbuf->b_no_eol_lnum = read_no_eol_lnum;
-
- /* When reloading a buffer put the cursor at the first line that is
- * different. */
- if (flags & READ_KEEP_UNDO)
- u_find_first_changed();
-
- /*
- * When opening a new file locate undo info and read it.
- */
- if (read_undo_file) {
- char_u hash[UNDO_HASH_SIZE];
-
- sha256_finish(&sha_ctx, hash);
- u_read_undo(NULL, hash, fname);
- }
-
- if (!read_stdin && !read_buffer) {
- int m = msg_scroll;
- int n = msg_scrolled;
-
- /* Save the fileformat now, otherwise the buffer will be considered
- * modified if the format/encoding was automatically detected. */
- if (set_options)
- save_file_ff(curbuf);
-
- /*
- * The output from the autocommands should not overwrite anything and
- * should not be overwritten: Set msg_scroll, restore its value if no
- * output was done.
- */
- msg_scroll = TRUE;
- if (filtering)
- apply_autocmds_exarg(EVENT_FILTERREADPOST, NULL, sfname,
- FALSE, curbuf, eap);
- else if (newfile)
- apply_autocmds_exarg(EVENT_BUFREADPOST, NULL, sfname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEREADPOST, sfname, sfname,
- FALSE, NULL, eap);
- if (msg_scrolled == n)
- msg_scroll = m;
- if (aborting()) /* autocmds may abort script processing */
- return FAIL;
- }
-
- if (recoverymode && error)
- return FAIL;
- return OK;
-}
-
-#ifdef OPEN_CHR_FILES
-/*
- * Returns TRUE if the file name argument is of the form "/dev/fd/\d\+",
- * which is the name of files used for process substitution output by
- * some shells on some operating systems, e.g., bash on SunOS.
- * Do not accept "/dev/fd/[012]", opening these may hang Vim.
- */
-static int is_dev_fd_file(char_u *fname)
-{
- return STRNCMP(fname, "/dev/fd/", 8) == 0
- && VIM_ISDIGIT(fname[8])
- && *skipdigits(fname + 9) == NUL
- && (fname[9] != NUL
- || (fname[8] != '0' && fname[8] != '1' && fname[8] != '2'));
-}
-#endif
-
-
-/*
- * From the current line count and characters read after that, estimate the
- * line number where we are now.
- * Used for error messages that include a line number.
- */
-static linenr_T
-readfile_linenr (
- linenr_T linecnt, /* line count before reading more bytes */
- char_u *p, /* start of more bytes read */
- char_u *endp /* end of more bytes read */
-)
-{
- char_u *s;
- linenr_T lnum;
-
- lnum = curbuf->b_ml.ml_line_count - linecnt + 1;
- for (s = p; s < endp; ++s)
- if (*s == '\n')
- ++lnum;
- return lnum;
-}
-
-/*
- * Fill "*eap" to force the 'fileencoding', 'fileformat' and 'binary to be
- * equal to the buffer "buf". Used for calling readfile().
- */
-void prep_exarg(exarg_T *eap, buf_T *buf)
-{
- eap->cmd = xmalloc(STRLEN(buf->b_p_ff) + STRLEN(buf->b_p_fenc) + 15);
-
- sprintf((char *)eap->cmd, "e ++ff=%s ++enc=%s", buf->b_p_ff, buf->b_p_fenc);
- eap->force_enc = 14 + (int)STRLEN(buf->b_p_ff);
- eap->bad_char = buf->b_bad_char;
- eap->force_ff = 7;
-
- eap->force_bin = buf->b_p_bin ? FORCE_BIN : FORCE_NOBIN;
- eap->read_edit = FALSE;
- eap->forceit = FALSE;
-}
-
-/*
- * Set default or forced 'fileformat' and 'binary'.
- */
-void set_file_options(int set_options, exarg_T *eap)
-{
- /* set default 'fileformat' */
- if (set_options) {
- if (eap != NULL && eap->force_ff != 0)
- set_fileformat(get_fileformat_force(curbuf, eap), OPT_LOCAL);
- else if (*p_ffs != NUL)
- set_fileformat(default_fileformat(), OPT_LOCAL);
- }
-
- /* set or reset 'binary' */
- if (eap != NULL && eap->force_bin != 0) {
- int oldval = curbuf->b_p_bin;
-
- curbuf->b_p_bin = (eap->force_bin == FORCE_BIN);
- set_options_bin(oldval, curbuf->b_p_bin, OPT_LOCAL);
- }
-}
-
-/*
- * Set forced 'fileencoding'.
- */
-void set_forced_fenc(exarg_T *eap)
-{
- if (eap->force_enc != 0) {
- char_u *fenc = enc_canonize(eap->cmd + eap->force_enc);
-
- if (fenc != NULL)
- set_string_option_direct((char_u *)"fenc", -1,
- fenc, OPT_FREE|OPT_LOCAL, 0);
- free(fenc);
- }
-}
-
-/*
- * Find next fileencoding to use from 'fileencodings'.
- * "pp" points to fenc_next. It's advanced to the next item.
- * When there are no more items, an empty string is returned and *pp is set to
- * NULL.
- * When *pp is not set to NULL, the result is in allocated memory.
- */
-static char_u *next_fenc(char_u **pp)
-{
- char_u *p;
- char_u *r;
-
- if (**pp == NUL) {
- *pp = NULL;
- return (char_u *)"";
- }
- p = vim_strchr(*pp, ',');
- if (p == NULL) {
- r = enc_canonize(*pp);
- *pp += STRLEN(*pp);
- } else {
- r = vim_strnsave(*pp, (int)(p - *pp));
- *pp = p + 1;
- if (r != NULL) {
- p = enc_canonize(r);
- free(r);
- r = p;
- }
- }
- if (r == NULL) { /* out of memory */
- r = (char_u *)"";
- *pp = NULL;
- }
- return r;
-}
-
-/*
- * Convert a file with the 'charconvert' expression.
- * This closes the file which is to be read, converts it and opens the
- * resulting file for reading.
- * Returns name of the resulting converted file (the caller should delete it
- * after reading it).
- * Returns NULL if the conversion failed ("*fdp" is not set) .
- */
-static char_u *
-readfile_charconvert (
- char_u *fname, /* name of input file */
- char_u *fenc, /* converted from */
- int *fdp /* in/out: file descriptor of file */
-)
-{
- char_u *tmpname;
- char_u *errmsg = NULL;
-
- tmpname = vim_tempname('r');
- if (tmpname == NULL)
- errmsg = (char_u *)_("Can't find temp file for conversion");
- else {
- close(*fdp); /* close the input file, ignore errors */
- *fdp = -1;
- if (eval_charconvert(fenc, enc_utf8 ? (char_u *)"utf-8" : p_enc,
- fname, tmpname) == FAIL)
- errmsg = (char_u *)_("Conversion with 'charconvert' failed");
- if (errmsg == NULL && (*fdp = mch_open((char *)tmpname,
- O_RDONLY, 0)) < 0)
- errmsg = (char_u *)_("can't read output of 'charconvert'");
- }
-
- if (errmsg != NULL) {
- /* Don't use emsg(), it breaks mappings, the retry with
- * another type of conversion might still work. */
- MSG(errmsg);
- if (tmpname != NULL) {
- os_remove((char *)tmpname); // delete converted file
- free(tmpname);
- tmpname = NULL;
- }
- }
-
- /* If the input file is closed, open it (caller should check for error). */
- if (*fdp < 0)
- *fdp = mch_open((char *)fname, O_RDONLY, 0);
-
- return tmpname;
-}
-
-
-/*
- * Read marks for the current buffer from the viminfo file, when we support
- * buffer marks and the buffer has a name.
- */
-static void check_marks_read(void)
-{
- if (!curbuf->b_marks_read && get_viminfo_parameter('\'') > 0
- && curbuf->b_ffname != NULL)
- read_viminfo(NULL, VIF_WANT_MARKS);
-
- /* Always set b_marks_read; needed when 'viminfo' is changed to include
- * the ' parameter after opening a buffer. */
- curbuf->b_marks_read = TRUE;
-}
-
-/*
- * Get the crypt method used for a file from "ptr[len]", the magic text at the
- * start of the file.
- * Returns -1 when no encryption used.
- */
-static int crypt_method_from_magic(char *ptr, int len)
-{
- int i;
-
- for (i = 0; i < (int)(sizeof(crypt_magic) / sizeof(crypt_magic[0])); i++) {
- if (len < (CRYPT_MAGIC_LEN + crypt_salt_len[i] + crypt_seed_len[i]))
- continue;
- if (memcmp(ptr, crypt_magic[i], CRYPT_MAGIC_LEN) == 0)
- return i;
- }
-
- i = (int)STRLEN(crypt_magic_head);
- if (len >= i && memcmp(ptr, crypt_magic_head, i) == 0)
- EMSG(_("E821: File is encrypted with unknown method"));
-
- return -1;
-}
-
-/*
- * Check for magic number used for encryption. Applies to the current buffer.
- * If found, the magic number is removed from ptr[*sizep] and *sizep and
- * *filesizep are updated.
- * Return the (new) encryption key, NULL for no encryption.
- */
-static char_u *
-check_for_cryptkey (
- char_u *cryptkey, /* previous encryption key or NULL */
- char_u *ptr, /* pointer to read bytes */
- long *sizep, /* length of read bytes */
- off_t *filesizep, /* nr of bytes used from file */
- int newfile, /* editing a new buffer */
- char_u *fname, /* file name to display */
- int *did_ask /* flag: whether already asked for key */
-)
-{
- int method = crypt_method_from_magic((char *)ptr, *sizep);
- int b_p_ro = curbuf->b_p_ro;
-
- if (method >= 0) {
- /* Mark the buffer as read-only until the decryption has taken place.
- * Avoids accidentally overwriting the file with garbage. */
- curbuf->b_p_ro = TRUE;
-
- set_crypt_method(curbuf, method);
- if (method > 0)
- (void)blowfish_self_test();
- if (cryptkey == NULL && !*did_ask) {
- if (*curbuf->b_p_key)
- cryptkey = curbuf->b_p_key;
- else {
- /* When newfile is TRUE, store the typed key in the 'key'
- * option and don't free it. bf needs hash of the key saved.
- * Don't ask for the key again when first time Enter was hit.
- * Happens when retrying to detect encoding. */
- smsg((char_u *)_(need_key_msg), fname);
- msg_scroll = TRUE;
- cryptkey = get_crypt_key(newfile, FALSE);
- *did_ask = TRUE;
-
- /* check if empty key entered */
- if (cryptkey != NULL && *cryptkey == NUL) {
- if (cryptkey != curbuf->b_p_key)
- free(cryptkey);
- cryptkey = NULL;
- }
- }
- }
-
- if (cryptkey != NULL) {
- int seed_len = crypt_seed_len[method];
- int salt_len = crypt_salt_len[method];
-
- crypt_push_state();
- use_crypt_method = method;
- if (method == 0)
- crypt_init_keys(cryptkey);
- else {
- bf_key_init(cryptkey, ptr + CRYPT_MAGIC_LEN, salt_len);
- bf_cfb_init(ptr + CRYPT_MAGIC_LEN + salt_len, seed_len);
- }
-
- /* Remove magic number from the text */
- *filesizep += CRYPT_MAGIC_LEN + salt_len + seed_len;
- *sizep -= CRYPT_MAGIC_LEN + salt_len + seed_len;
- memmove(ptr, ptr + CRYPT_MAGIC_LEN + salt_len + seed_len,
- (size_t)*sizep);
- /* Restore the read-only flag. */
- curbuf->b_p_ro = b_p_ro;
- }
- }
- /* When starting to edit a new file which does not have encryption, clear
- * the 'key' option, except when starting up (called with -x argument) */
- else if (newfile && *curbuf->b_p_key != NUL && !starting)
- set_option_value((char_u *)"key", 0L, (char_u *)"", OPT_LOCAL);
-
- return cryptkey;
-}
-
-/*
- * Check for magic number used for encryption. Applies to the current buffer.
- * If found and decryption is possible returns OK;
- */
-int prepare_crypt_read(FILE *fp)
-{
- int method;
- char_u buffer[CRYPT_MAGIC_LEN + CRYPT_SALT_LEN_MAX
- + CRYPT_SEED_LEN_MAX + 2];
-
- if (fread(buffer, CRYPT_MAGIC_LEN, 1, fp) != 1)
- return FAIL;
- method = crypt_method_from_magic((char *)buffer,
- CRYPT_MAGIC_LEN +
- CRYPT_SEED_LEN_MAX +
- CRYPT_SALT_LEN_MAX);
- if (method < 0 || method != get_crypt_method(curbuf))
- return FAIL;
-
- crypt_push_state();
- if (method == 0)
- crypt_init_keys(curbuf->b_p_key);
- else {
- int salt_len = crypt_salt_len[method];
- int seed_len = crypt_seed_len[method];
-
- if (fread(buffer, salt_len + seed_len, 1, fp) != 1)
- return FAIL;
- bf_key_init(curbuf->b_p_key, buffer, salt_len);
- bf_cfb_init(buffer + salt_len, seed_len);
- }
- return OK;
-}
-
-/*
- * Prepare for writing encrypted bytes for buffer "buf".
- * Returns a pointer to an allocated header of length "*lenp".
- * When out of memory returns NULL.
- * Otherwise calls crypt_push_state(), call crypt_pop_state() later.
- */
-char_u *prepare_crypt_write(buf_T *buf, int *lenp)
-{
- char_u *header = xcalloc(1, CRYPT_MAGIC_LEN + CRYPT_SALT_LEN_MAX
- + CRYPT_SEED_LEN_MAX + 2);
- int seed_len = crypt_seed_len[get_crypt_method(buf)];
- int salt_len = crypt_salt_len[get_crypt_method(buf)];
- char_u *salt;
- char_u *seed;
-
- crypt_push_state();
- use_crypt_method = get_crypt_method(buf); /* select zip or blowfish */
- vim_strncpy(header, (char_u *)crypt_magic[use_crypt_method],
- CRYPT_MAGIC_LEN);
- if (use_crypt_method == 0)
- crypt_init_keys(buf->b_p_key);
- else {
- /* Using blowfish, add salt and seed. */
- salt = header + CRYPT_MAGIC_LEN;
- seed = salt + salt_len;
- sha2_seed(salt, salt_len, seed, seed_len);
- bf_key_init(buf->b_p_key, salt, salt_len);
- bf_cfb_init(seed, seed_len);
- }
-
- *lenp = CRYPT_MAGIC_LEN + salt_len + seed_len;
- return header;
-}
-
-
-#ifdef UNIX
-static void
-set_file_time (
- char_u *fname,
- time_t atime, /* access time */
- time_t mtime /* modification time */
-)
-{
-# if defined(HAVE_UTIME) && defined(HAVE_UTIME_H)
- struct utimbuf buf;
-
- buf.actime = atime;
- buf.modtime = mtime;
- (void)utime((char *)fname, &buf);
-# else
-# if defined(HAVE_UTIMES)
- struct timeval tvp[2];
-
- tvp[0].tv_sec = atime;
- tvp[0].tv_usec = 0;
- tvp[1].tv_sec = mtime;
- tvp[1].tv_usec = 0;
- (void)utimes((char *)fname, (const struct timeval *)&tvp);
-# endif
-# endif
-}
-#endif /* UNIX */
-
-/*
- * buf_write() - write to file "fname" lines "start" through "end"
- *
- * We do our own buffering here because fwrite() is so slow.
- *
- * If "forceit" is true, we don't care for errors when attempting backups.
- * In case of an error everything possible is done to restore the original
- * file. But when "forceit" is TRUE, we risk losing it.
- *
- * When "reset_changed" is TRUE and "append" == FALSE and "start" == 1 and
- * "end" == curbuf->b_ml.ml_line_count, reset curbuf->b_changed.
- *
- * This function must NOT use NameBuff (because it's called by autowrite()).
- *
- * return FAIL for failure, OK otherwise
- */
-int
-buf_write (
- buf_T *buf,
- char_u *fname,
- char_u *sfname,
- linenr_T start,
- linenr_T end,
- exarg_T *eap, /* for forced 'ff' and 'fenc', can be
- NULL! */
- int append, /* append to the file */
- int forceit,
- int reset_changed,
- int filtering
-)
-{
- int fd;
- char_u *backup = NULL;
- int backup_copy = FALSE; /* copy the original file? */
- int dobackup;
- char_u *ffname;
- char_u *wfname = NULL; /* name of file to write to */
- char_u *s;
- char_u *ptr;
- char_u c;
- int len;
- linenr_T lnum;
- long nchars;
- char_u *errmsg = NULL;
- int errmsg_allocated = FALSE;
- char_u *errnum = NULL;
- char_u *buffer;
- char_u smallbuf[SMBUFSIZE];
- char_u *backup_ext;
- int bufsize;
- long perm; /* file permissions */
- int retval = OK;
- int newfile = FALSE; /* TRUE if file doesn't exist yet */
- int msg_save = msg_scroll;
- int overwriting; /* TRUE if writing over original */
- int no_eol = FALSE; /* no end-of-line written */
- int device = FALSE; /* writing to a device */
- int prev_got_int = got_int;
- bool file_readonly = false; /* overwritten file is read-only */
- static char *err_readonly =
- "is read-only (cannot override: \"W\" in 'cpoptions')";
-#if defined(UNIX)
- int made_writable = FALSE; /* 'w' bit has been set */
-#endif
- /* writing everything */
- int whole = (start == 1 && end == buf->b_ml.ml_line_count);
- linenr_T old_line_count = buf->b_ml.ml_line_count;
- int attr;
- int fileformat;
- int write_bin;
- struct bw_info write_info; /* info for buf_write_bytes() */
- int converted = FALSE;
- int notconverted = FALSE;
- char_u *fenc; /* effective 'fileencoding' */
- char_u *fenc_tofree = NULL; /* allocated "fenc" */
-#ifdef HAS_BW_FLAGS
- int wb_flags = 0;
-#endif
-#ifdef HAVE_ACL
- vim_acl_T acl = NULL; /* ACL copied from original file to
- backup or new file */
-#endif
- int write_undo_file = FALSE;
- context_sha256_T sha_ctx;
- int crypt_method_used;
-
- if (fname == NULL || *fname == NUL) /* safety check */
- return FAIL;
- if (buf->b_ml.ml_mfp == NULL) {
- /* This can happen during startup when there is a stray "w" in the
- * vimrc file. */
- EMSG(_(e_emptybuf));
- return FAIL;
- }
-
- /*
- * Disallow writing from .exrc and .vimrc in current directory for
- * security reasons.
- */
- if (check_secure())
- return FAIL;
-
- /* Avoid a crash for a long name. */
- if (STRLEN(fname) >= MAXPATHL) {
- EMSG(_(e_longname));
- return FAIL;
- }
-
- /* must init bw_conv_buf and bw_iconv_fd before jumping to "fail" */
- write_info.bw_conv_buf = NULL;
- write_info.bw_conv_error = FALSE;
- write_info.bw_conv_error_lnum = 0;
- write_info.bw_restlen = 0;
-# ifdef USE_ICONV
- write_info.bw_iconv_fd = (iconv_t)-1;
-# endif
-
- /* After writing a file changedtick changes but we don't want to display
- * the line. */
- ex_no_reprint = TRUE;
-
- /*
- * If there is no file name yet, use the one for the written file.
- * BF_NOTEDITED is set to reflect this (in case the write fails).
- * Don't do this when the write is for a filter command.
- * Don't do this when appending.
- * Only do this when 'cpoptions' contains the 'F' flag.
- */
- if (buf->b_ffname == NULL
- && reset_changed
- && whole
- && buf == curbuf
- && !bt_nofile(buf)
- && !filtering
- && (!append || vim_strchr(p_cpo, CPO_FNAMEAPP) != NULL)
- && vim_strchr(p_cpo, CPO_FNAMEW) != NULL) {
- if (set_rw_fname(fname, sfname) == FAIL)
- return FAIL;
- buf = curbuf; /* just in case autocmds made "buf" invalid */
- }
-
- if (sfname == NULL)
- sfname = fname;
- /*
- * For Unix: Use the short file name whenever possible.
- * Avoids problems with networks and when directory names are changed.
- * Don't do this for MS-DOS, a "cd" in a sub-shell may have moved us to
- * another directory, which we don't detect
- */
- ffname = fname; /* remember full fname */
-#ifdef UNIX
- fname = sfname;
-#endif
-
- if (buf->b_ffname != NULL && fnamecmp(ffname, buf->b_ffname) == 0)
- overwriting = TRUE;
- else
- overwriting = FALSE;
-
- if (exiting)
- settmode(TMODE_COOK); /* when exiting allow typeahead now */
-
- ++no_wait_return; /* don't wait for return yet */
-
- /*
- * Set '[ and '] marks to the lines to be written.
- */
- buf->b_op_start.lnum = start;
- buf->b_op_start.col = 0;
- buf->b_op_end.lnum = end;
- buf->b_op_end.col = 0;
-
- {
- aco_save_T aco;
- int buf_ffname = FALSE;
- int buf_sfname = FALSE;
- int buf_fname_f = FALSE;
- int buf_fname_s = FALSE;
- int did_cmd = FALSE;
- int nofile_err = FALSE;
- int empty_memline = (buf->b_ml.ml_mfp == NULL);
-
- /*
- * Apply PRE autocommands.
- * Set curbuf to the buffer to be written.
- * Careful: The autocommands may call buf_write() recursively!
- */
- if (ffname == buf->b_ffname)
- buf_ffname = TRUE;
- if (sfname == buf->b_sfname)
- buf_sfname = TRUE;
- if (fname == buf->b_ffname)
- buf_fname_f = TRUE;
- if (fname == buf->b_sfname)
- buf_fname_s = TRUE;
-
- /* set curwin/curbuf to buf and save a few things */
- aucmd_prepbuf(&aco, buf);
-
- if (append) {
- if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEAPPENDCMD,
- sfname, sfname, FALSE, curbuf, eap))) {
- if (overwriting && bt_nofile(curbuf))
- nofile_err = TRUE;
- else
- apply_autocmds_exarg(EVENT_FILEAPPENDPRE,
- sfname, sfname, FALSE, curbuf, eap);
- }
- } else if (filtering) {
- apply_autocmds_exarg(EVENT_FILTERWRITEPRE,
- NULL, sfname, FALSE, curbuf, eap);
- } else if (reset_changed && whole) {
- int was_changed = curbufIsChanged();
-
- did_cmd = apply_autocmds_exarg(EVENT_BUFWRITECMD,
- sfname, sfname, FALSE, curbuf, eap);
- if (did_cmd) {
- if (was_changed && !curbufIsChanged()) {
- /* Written everything correctly and BufWriteCmd has reset
- * 'modified': Correct the undo information so that an
- * undo now sets 'modified'. */
- u_unchanged(curbuf);
- u_update_save_nr(curbuf);
- }
- } else {
- if (overwriting && bt_nofile(curbuf))
- nofile_err = TRUE;
- else
- apply_autocmds_exarg(EVENT_BUFWRITEPRE,
- sfname, sfname, FALSE, curbuf, eap);
- }
- } else {
- if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEWRITECMD,
- sfname, sfname, FALSE, curbuf, eap))) {
- if (overwriting && bt_nofile(curbuf))
- nofile_err = TRUE;
- else
- apply_autocmds_exarg(EVENT_FILEWRITEPRE,
- sfname, sfname, FALSE, curbuf, eap);
- }
- }
-
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
-
- /*
- * In three situations we return here and don't write the file:
- * 1. the autocommands deleted or unloaded the buffer.
- * 2. The autocommands abort script processing.
- * 3. If one of the "Cmd" autocommands was executed.
- */
- if (!buf_valid(buf))
- buf = NULL;
- if (buf == NULL || (buf->b_ml.ml_mfp == NULL && !empty_memline)
- || did_cmd || nofile_err
- || aborting()
- ) {
- --no_wait_return;
- msg_scroll = msg_save;
- if (nofile_err)
- EMSG(_("E676: No matching autocommands for acwrite buffer"));
-
- if (nofile_err
- || aborting()
- )
- /* An aborting error, interrupt or exception in the
- * autocommands. */
- return FAIL;
- if (did_cmd) {
- if (buf == NULL)
- /* The buffer was deleted. We assume it was written
- * (can't retry anyway). */
- return OK;
- if (overwriting) {
- /* Assume the buffer was written, update the timestamp. */
- ml_timestamp(buf);
- if (append)
- buf->b_flags &= ~BF_NEW;
- else
- buf->b_flags &= ~BF_WRITE_MASK;
- }
- if (reset_changed && buf->b_changed && !append
- && (overwriting || vim_strchr(p_cpo, CPO_PLUS) != NULL))
- /* Buffer still changed, the autocommands didn't work
- * properly. */
- return FAIL;
- return OK;
- }
- if (!aborting())
- EMSG(_("E203: Autocommands deleted or unloaded buffer to be written"));
- return FAIL;
- }
-
- /*
- * The autocommands may have changed the number of lines in the file.
- * When writing the whole file, adjust the end.
- * When writing part of the file, assume that the autocommands only
- * changed the number of lines that are to be written (tricky!).
- */
- if (buf->b_ml.ml_line_count != old_line_count) {
- if (whole) /* write all */
- end = buf->b_ml.ml_line_count;
- else if (buf->b_ml.ml_line_count > old_line_count) /* more lines */
- end += buf->b_ml.ml_line_count - old_line_count;
- else { /* less lines */
- end -= old_line_count - buf->b_ml.ml_line_count;
- if (end < start) {
- --no_wait_return;
- msg_scroll = msg_save;
- EMSG(_("E204: Autocommand changed number of lines in unexpected way"));
- return FAIL;
- }
- }
- }
-
- /*
- * The autocommands may have changed the name of the buffer, which may
- * be kept in fname, ffname and sfname.
- */
- if (buf_ffname)
- ffname = buf->b_ffname;
- if (buf_sfname)
- sfname = buf->b_sfname;
- if (buf_fname_f)
- fname = buf->b_ffname;
- if (buf_fname_s)
- fname = buf->b_sfname;
- }
-
-
- if (shortmess(SHM_OVER) && !exiting)
- msg_scroll = FALSE; /* overwrite previous file message */
- else
- msg_scroll = TRUE; /* don't overwrite previous file message */
- if (!filtering)
- filemess(buf,
-#ifndef UNIX
- sfname,
-#else
- fname,
-#endif
- (char_u *)"", 0); /* show that we are busy */
- msg_scroll = FALSE; /* always overwrite the file message now */
-
- buffer = verbose_try_malloc(BUFSIZE);
- // can't allocate big buffer, use small one (to be able to write when out of
- // memory)
- if (buffer == NULL) {
- buffer = smallbuf;
- bufsize = SMBUFSIZE;
- } else
- bufsize = BUFSIZE;
-
- /*
- * Get information about original file (if there is one).
- */
-#if defined(UNIX)
- perm = -1;
- FileInfo file_info_old;
- if (!os_get_file_info((char *)fname, &file_info_old)) {
- newfile = TRUE;
- } else {
- perm = file_info_old.stat.st_mode;
- if (!S_ISREG(file_info_old.stat.st_mode)) { /* not a file */
- if (S_ISDIR(file_info_old.stat.st_mode)) {
- errnum = (char_u *)"E502: ";
- errmsg = (char_u *)_("is a directory");
- goto fail;
- }
- if (mch_nodetype(fname) != NODE_WRITABLE) {
- errnum = (char_u *)"E503: ";
- errmsg = (char_u *)_("is not a file or writable device");
- goto fail;
- }
- /* It's a device of some kind (or a fifo) which we can write to
- * but for which we can't make a backup. */
- device = TRUE;
- newfile = TRUE;
- perm = -1;
- }
- }
-#else /* !UNIX */
- /*
- * Check for a writable device name.
- */
- c = mch_nodetype(fname);
- if (c == NODE_OTHER) {
- errnum = (char_u *)"E503: ";
- errmsg = (char_u *)_("is not a file or writable device");
- goto fail;
- }
- if (c == NODE_WRITABLE) {
- device = TRUE;
- newfile = TRUE;
- perm = -1;
- } else {
- perm = os_getperm(fname);
- if (perm < 0)
- newfile = TRUE;
- else if (os_isdir(fname)) {
- errnum = (char_u *)"E502: ";
- errmsg = (char_u *)_("is a directory");
- goto fail;
- }
- if (overwriting) {
- os_get_file_info((char *)fname, &file_info_old);
- }
-
- }
-#endif /* !UNIX */
-
- if (!device && !newfile) {
- /*
- * Check if the file is really writable (when renaming the file to
- * make a backup we won't discover it later).
- */
- file_readonly = os_file_is_readonly((char *)fname);
-
- if (!forceit && file_readonly) {
- if (vim_strchr(p_cpo, CPO_FWRITE) != NULL) {
- errnum = (char_u *)"E504: ";
- errmsg = (char_u *)_(err_readonly);
- } else {
- errnum = (char_u *)"E505: ";
- errmsg = (char_u *)_("is read-only (add ! to override)");
- }
- goto fail;
- }
-
- /*
- * Check if the timestamp hasn't changed since reading the file.
- */
- if (overwriting) {
- retval = check_mtime(buf, &file_info_old);
- if (retval == FAIL)
- goto fail;
- }
- }
-
-#ifdef HAVE_ACL
- /*
- * For systems that support ACL: get the ACL from the original file.
- */
- if (!newfile)
- acl = mch_get_acl(fname);
-#endif
-
- /*
- * If 'backupskip' is not empty, don't make a backup for some files.
- */
- dobackup = (p_wb || p_bk || *p_pm != NUL);
- if (dobackup && *p_bsk != NUL && match_file_list(p_bsk, sfname, ffname))
- dobackup = FALSE;
-
- /*
- * Save the value of got_int and reset it. We don't want a previous
- * interruption cancel writing, only hitting CTRL-C while writing should
- * abort it.
- */
- prev_got_int = got_int;
- got_int = FALSE;
-
- /* Mark the buffer as 'being saved' to prevent changed buffer warnings */
- buf->b_saving = TRUE;
-
- /*
- * If we are not appending or filtering, the file exists, and the
- * 'writebackup', 'backup' or 'patchmode' option is set, need a backup.
- * When 'patchmode' is set also make a backup when appending.
- *
- * Do not make any backup, if 'writebackup' and 'backup' are both switched
- * off. This helps when editing large files on almost-full disks.
- */
- if (!(append && *p_pm == NUL) && !filtering && perm >= 0 && dobackup) {
- FileInfo file_info;
-
- if ((bkc_flags & BKC_YES) || append) { /* "yes" */
- backup_copy = TRUE;
- } else if ((bkc_flags & BKC_AUTO)) { /* "auto" */
- int i;
-
-# ifdef UNIX
- /*
- * Don't rename the file when:
- * - it's a hard link
- * - it's a symbolic link
- * - we don't have write permission in the directory
- * - we can't set the owner/group of the new file
- */
- if (file_info_old.stat.st_nlink > 1
- || !os_get_file_info_link((char *)fname, &file_info)
- || !os_file_info_id_equal(&file_info, &file_info_old)
-# ifndef HAVE_FCHOWN
- || file_info.stat.st_uid != file_info_old.stat.st_uid
- || file_info.stat.st_gid != file_info_old.stat.st_gid
-# endif
- ) {
- backup_copy = TRUE;
- } else
-# endif
- {
- /*
- * Check if we can create a file and set the owner/group to
- * the ones from the original file.
- * First find a file name that doesn't exist yet (use some
- * arbitrary numbers).
- */
- STRCPY(IObuff, fname);
- for (i = 4913;; i += 123) {
- sprintf((char *)path_tail(IObuff), "%d", i);
- if (!os_get_file_info_link((char *)IObuff, &file_info)) {
- break;
- }
- }
- fd = mch_open((char *)IObuff,
- O_CREAT|O_WRONLY|O_EXCL|O_NOFOLLOW, perm);
- if (fd < 0) /* can't write in directory */
- backup_copy = TRUE;
- else {
-# ifdef UNIX
-# ifdef HAVE_FCHOWN
- fchown(fd, file_info_old.stat.st_uid, file_info_old.stat.st_gid);
-# endif
- if (!os_get_file_info((char *)IObuff, &file_info)
- || file_info.stat.st_uid != file_info_old.stat.st_uid
- || file_info.stat.st_gid != file_info_old.stat.st_gid
- || (long)file_info.stat.st_mode != perm) {
- backup_copy = TRUE;
- }
-# endif
- /* Close the file before removing it, on MS-Windows we
- * can't delete an open file. */
- close(fd);
- os_remove((char *)IObuff);
- }
- }
- }
-
- /*
- * Break symlinks and/or hardlinks if we've been asked to.
- */
- if ((bkc_flags & BKC_BREAKSYMLINK) || (bkc_flags & BKC_BREAKHARDLINK)) {
-# ifdef UNIX
- bool file_info_link_ok = os_get_file_info_link((char *)fname, &file_info);
-
- /* Symlinks. */
- if ((bkc_flags & BKC_BREAKSYMLINK)
- && file_info_link_ok
- && !os_file_info_id_equal(&file_info, &file_info_old)) {
- backup_copy = FALSE;
- }
-
- /* Hardlinks. */
- if ((bkc_flags & BKC_BREAKHARDLINK)
- && file_info_old.stat.st_nlink > 1
- && (!file_info_link_ok
- || os_file_info_id_equal(&file_info, &file_info_old))) {
- backup_copy = FALSE;
- }
-# endif
- }
-
- /* make sure we have a valid backup extension to use */
- if (*p_bex == NUL)
- backup_ext = (char_u *)".bak";
- else
- backup_ext = p_bex;
-
- if (backup_copy
- && (fd = mch_open((char *)fname, O_RDONLY, 0)) >= 0) {
- int bfd;
- char_u *copybuf, *wp;
- int some_error = FALSE;
- char_u *dirp;
- char_u *rootname;
-
- copybuf = verbose_try_malloc(BUFSIZE + 1);
- if (copybuf == NULL) {
- // out of memory
- some_error = TRUE;
- goto nobackup;
- }
-
- /*
- * Try to make the backup in each directory in the 'bdir' option.
- *
- * Unix semantics has it, that we may have a writable file,
- * that cannot be recreated with a simple open(..., O_CREAT, ) e.g:
- * - the directory is not writable,
- * - the file may be a symbolic link,
- * - the file may belong to another user/group, etc.
- *
- * For these reasons, the existing writable file must be truncated
- * and reused. Creation of a backup COPY will be attempted.
- */
- dirp = p_bdir;
- while (*dirp) {
- /*
- * Isolate one directory name, using an entry in 'bdir'.
- */
- (void)copy_option_part(&dirp, copybuf, BUFSIZE, ",");
- rootname = get_file_in_dir(fname, copybuf);
- if (rootname == NULL) {
- some_error = TRUE; /* out of memory */
- goto nobackup;
- }
-
- FileInfo file_info_new;
- {
- /*
- * Make backup file name.
- */
- backup = modname(rootname, backup_ext, FALSE);
- if (backup == NULL) {
- free(rootname);
- some_error = TRUE; /* out of memory */
- goto nobackup;
- }
-
- /*
- * Check if backup file already exists.
- */
- if (os_get_file_info((char *)backup, &file_info_new)) {
- /*
- * Check if backup file is same as original file.
- * May happen when modname() gave the same file back (e.g. silly
- * link). If we don't check here, we either ruin the file when
- * copying or erase it after writing.
- */
- if (os_file_info_id_equal(&file_info_new, &file_info_old)) {
- free(backup);
- backup = NULL; /* no backup file to delete */
- }
-
- /*
- * If we are not going to keep the backup file, don't
- * delete an existing one, try to use another name.
- * Change one character, just before the extension.
- */
- if (!p_bk) {
- wp = backup + STRLEN(backup) - 1
- - STRLEN(backup_ext);
- if (wp < backup) /* empty file name ??? */
- wp = backup;
- *wp = 'z';
- while (*wp > 'a'
- && os_get_file_info((char *)backup, &file_info_new)) {
- --*wp;
- }
- /* They all exist??? Must be something wrong. */
- if (*wp == 'a') {
- free(backup);
- backup = NULL;
- }
- }
- }
- }
- free(rootname);
-
- /*
- * Try to create the backup file
- */
- if (backup != NULL) {
- /* remove old backup, if present */
- os_remove((char *)backup);
- /* Open with O_EXCL to avoid the file being created while
- * we were sleeping (symlink hacker attack?) */
- bfd = mch_open((char *)backup,
- O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW,
- perm & 0777);
- if (bfd < 0) {
- free(backup);
- backup = NULL;
- } else {
- /* set file protection same as original file, but
- * strip s-bit */
- (void)os_setperm(backup, perm & 0777);
-
-#ifdef UNIX
- /*
- * Try to set the group of the backup same as the
- * original file. If this fails, set the protection
- * bits for the group same as the protection bits for
- * others.
- */
- if (file_info_new.stat.st_gid != file_info_old.stat.st_gid
-# ifdef HAVE_FCHOWN /* sequent-ptx lacks fchown() */
- && fchown(bfd, (uid_t)-1, file_info_old.stat.st_gid) != 0
-# endif
- ) {
- os_setperm(backup, (perm & 0707) | ((perm & 07) << 3));
- }
-# ifdef HAVE_SELINUX
- mch_copy_sec(fname, backup);
-# endif
-#endif
-
- /*
- * copy the file.
- */
- write_info.bw_fd = bfd;
- write_info.bw_buf = copybuf;
-#ifdef HAS_BW_FLAGS
- write_info.bw_flags = FIO_NOCONVERT;
-#endif
- while ((write_info.bw_len = read_eintr(fd, copybuf,
- BUFSIZE)) > 0) {
- if (buf_write_bytes(&write_info) == FAIL) {
- errmsg = (char_u *)_(
- "E506: Can't write to backup file (add ! to override)");
- break;
- }
- ui_breakcheck();
- if (got_int) {
- errmsg = (char_u *)_(e_interr);
- break;
- }
- }
-
- if (close(bfd) < 0 && errmsg == NULL)
- errmsg = (char_u *)_(
- "E507: Close error for backup file (add ! to override)");
- if (write_info.bw_len < 0)
- errmsg = (char_u *)_(
- "E508: Can't read file for backup (add ! to override)");
-#ifdef UNIX
- set_file_time(backup,
- file_info_old.stat.st_atim.tv_sec,
- file_info_old.stat.st_mtim.tv_sec);
-#endif
-#ifdef HAVE_ACL
- mch_set_acl(backup, acl);
-#endif
-#ifdef HAVE_SELINUX
- mch_copy_sec(fname, backup);
-#endif
- break;
- }
- }
- }
-nobackup:
- close(fd); /* ignore errors for closing read file */
- free(copybuf);
-
- if (backup == NULL && errmsg == NULL)
- errmsg = (char_u *)_(
- "E509: Cannot create backup file (add ! to override)");
- /* ignore errors when forceit is TRUE */
- if ((some_error || errmsg != NULL) && !forceit) {
- retval = FAIL;
- goto fail;
- }
- errmsg = NULL;
- } else {
- char_u *dirp;
- char_u *p;
- char_u *rootname;
-
- /*
- * Make a backup by renaming the original file.
- */
- /*
- * If 'cpoptions' includes the "W" flag, we don't want to
- * overwrite a read-only file. But rename may be possible
- * anyway, thus we need an extra check here.
- */
- if (file_readonly && vim_strchr(p_cpo, CPO_FWRITE) != NULL) {
- errnum = (char_u *)"E504: ";
- errmsg = (char_u *)_(err_readonly);
- goto fail;
- }
-
- /*
- *
- * Form the backup file name - change path/fo.o.h to
- * path/fo.o.h.bak Try all directories in 'backupdir', first one
- * that works is used.
- */
- dirp = p_bdir;
- while (*dirp) {
- /*
- * Isolate one directory name and make the backup file name.
- */
- (void)copy_option_part(&dirp, IObuff, IOSIZE, ",");
- rootname = get_file_in_dir(fname, IObuff);
- if (rootname == NULL)
- backup = NULL;
- else {
- backup = modname(rootname, backup_ext, FALSE);
- free(rootname);
- }
-
- if (backup != NULL) {
- /*
- * If we are not going to keep the backup file, don't
- * delete an existing one, try to use another name.
- * Change one character, just before the extension.
- */
- if (!p_bk && os_file_exists(backup)) {
- p = backup + STRLEN(backup) - 1 - STRLEN(backup_ext);
- if (p < backup) /* empty file name ??? */
- p = backup;
- *p = 'z';
- while (*p > 'a' && os_file_exists(backup))
- --*p;
- /* They all exist??? Must be something wrong! */
- if (*p == 'a') {
- free(backup);
- backup = NULL;
- }
- }
- }
- if (backup != NULL) {
- /*
- * Delete any existing backup and move the current version
- * to the backup. For safety, we don't remove the backup
- * until the write has finished successfully. And if the
- * 'backup' option is set, leave it around.
- */
- /*
- * If the renaming of the original file to the backup file
- * works, quit here.
- */
- if (vim_rename(fname, backup) == 0)
- break;
-
- free(backup); /* don't do the rename below */
- backup = NULL;
- }
- }
- if (backup == NULL && !forceit) {
- errmsg = (char_u *)_("E510: Can't make backup file (add ! to override)");
- goto fail;
- }
- }
- }
-
-#if defined(UNIX)
- /* When using ":w!" and the file was read-only: make it writable */
- if (forceit && perm >= 0 && !(perm & 0200)
- && file_info_old.stat.st_uid == getuid()
- && vim_strchr(p_cpo, CPO_FWRITE) == NULL) {
- perm |= 0200;
- (void)os_setperm(fname, perm);
- made_writable = TRUE;
- }
-#endif
-
- /* When using ":w!" and writing to the current file, 'readonly' makes no
- * sense, reset it, unless 'Z' appears in 'cpoptions'. */
- if (forceit && overwriting && vim_strchr(p_cpo, CPO_KEEPRO) == NULL) {
- buf->b_p_ro = FALSE;
- need_maketitle = TRUE; /* set window title later */
- status_redraw_all(); /* redraw status lines later */
- }
-
- if (end > buf->b_ml.ml_line_count)
- end = buf->b_ml.ml_line_count;
- if (buf->b_ml.ml_flags & ML_EMPTY)
- start = end + 1;
-
- /*
- * If the original file is being overwritten, there is a small chance that
- * we crash in the middle of writing. Therefore the file is preserved now.
- * This makes all block numbers positive so that recovery does not need
- * the original file.
- * Don't do this if there is a backup file and we are exiting.
- */
- if (reset_changed && !newfile && overwriting
- && !(exiting && backup != NULL)) {
- ml_preserve(buf, FALSE);
- if (got_int) {
- errmsg = (char_u *)_(e_interr);
- goto restore_backup;
- }
- }
-
-
- /* Default: write the file directly. May write to a temp file for
- * multi-byte conversion. */
- wfname = fname;
-
- /* Check for forced 'fileencoding' from "++opt=val" argument. */
- if (eap != NULL && eap->force_enc != 0) {
- fenc = eap->cmd + eap->force_enc;
- fenc = enc_canonize(fenc);
- fenc_tofree = fenc;
- } else
- fenc = buf->b_p_fenc;
-
- /*
- * Check if the file needs to be converted.
- */
- converted = need_conversion(fenc);
-
- /*
- * Check if UTF-8 to UCS-2/4 or Latin1 conversion needs to be done. Or
- * Latin1 to Unicode conversion. This is handled in buf_write_bytes().
- * Prepare the flags for it and allocate bw_conv_buf when needed.
- */
- if (converted && (enc_utf8 || STRCMP(p_enc, "latin1") == 0)) {
- wb_flags = get_fio_flags(fenc);
- if (wb_flags & (FIO_UCS2 | FIO_UCS4 | FIO_UTF16 | FIO_UTF8)) {
- /* Need to allocate a buffer to translate into. */
- if (wb_flags & (FIO_UCS2 | FIO_UTF16 | FIO_UTF8))
- write_info.bw_conv_buflen = bufsize * 2;
- else /* FIO_UCS4 */
- write_info.bw_conv_buflen = bufsize * 4;
- write_info.bw_conv_buf = verbose_try_malloc(write_info.bw_conv_buflen);
- if (!write_info.bw_conv_buf) {
- end = 0;
- }
- }
- }
-
-
-
- if (converted && wb_flags == 0) {
-# ifdef USE_ICONV
- /*
- * Use iconv() conversion when conversion is needed and it's not done
- * internally.
- */
- write_info.bw_iconv_fd = (iconv_t)my_iconv_open(fenc,
- enc_utf8 ? (char_u *)"utf-8" : p_enc);
- if (write_info.bw_iconv_fd != (iconv_t)-1) {
- /* We're going to use iconv(), allocate a buffer to convert in. */
- write_info.bw_conv_buflen = bufsize * ICONV_MULT;
- write_info.bw_conv_buf = verbose_try_malloc(write_info.bw_conv_buflen);
- if (!write_info.bw_conv_buf) {
- end = 0;
- }
- write_info.bw_first = TRUE;
- } else
-# endif
-
- /*
- * When the file needs to be converted with 'charconvert' after
- * writing, write to a temp file instead and let the conversion
- * overwrite the original file.
- */
- if (*p_ccv != NUL) {
- wfname = vim_tempname('w');
- if (wfname == NULL) { /* Can't write without a tempfile! */
- errmsg = (char_u *)_("E214: Can't find temp file for writing");
- goto restore_backup;
- }
- }
- }
- if (converted && wb_flags == 0
-# ifdef USE_ICONV
- && write_info.bw_iconv_fd == (iconv_t)-1
-# endif
- && wfname == fname
- ) {
- if (!forceit) {
- errmsg = (char_u *)_(
- "E213: Cannot convert (add ! to write without conversion)");
- goto restore_backup;
- }
- notconverted = TRUE;
- }
-
- /*
- * Open the file "wfname" for writing.
- * We may try to open the file twice: If we can't write to the
- * file and forceit is TRUE we delete the existing file and try to create
- * a new one. If this still fails we may have lost the original file!
- * (this may happen when the user reached his quotum for number of files).
- * Appending will fail if the file does not exist and forceit is FALSE.
- */
- while ((fd = mch_open((char *)wfname, O_WRONLY | (append
- ? (forceit ? (
- O_APPEND |
- O_CREAT) :
- O_APPEND)
- : (O_CREAT |
- O_TRUNC))
- , perm < 0 ? 0666 : (perm & 0777))) < 0) {
- /*
- * A forced write will try to create a new file if the old one is
- * still readonly. This may also happen when the directory is
- * read-only. In that case the os_remove() will fail.
- */
- if (errmsg == NULL) {
-#ifdef UNIX
- FileInfo file_info;
-
- /* Don't delete the file when it's a hard or symbolic link. */
- if ((!newfile && file_info_old.stat.st_nlink > 1)
- || (os_get_file_info_link((char *)fname, &file_info)
- && !os_file_info_id_equal(&file_info, &file_info_old))) {
- errmsg = (char_u *)_("E166: Can't open linked file for writing");
- } else
-#endif
- {
- errmsg = (char_u *)_("E212: Can't open file for writing");
- if (forceit && vim_strchr(p_cpo, CPO_FWRITE) == NULL
- && perm >= 0) {
-#ifdef UNIX
- /* we write to the file, thus it should be marked
- writable after all */
- if (!(perm & 0200))
- made_writable = TRUE;
- perm |= 0200;
- if (file_info_old.stat.st_uid != getuid()
- || file_info_old.stat.st_gid != getgid()) {
- perm &= 0777;
- }
-#endif
- if (!append) /* don't remove when appending */
- os_remove((char *)wfname);
- continue;
- }
- }
- }
-
-restore_backup:
- {
- /*
- * If we failed to open the file, we don't need a backup. Throw it
- * away. If we moved or removed the original file try to put the
- * backup in its place.
- */
- if (backup != NULL && wfname == fname) {
- if (backup_copy) {
- /*
- * There is a small chance that we removed the original,
- * try to move the copy in its place.
- * This may not work if the vim_rename() fails.
- * In that case we leave the copy around.
- */
- /* If file does not exist, put the copy in its place */
- if (!os_file_exists(fname)) {
- vim_rename(backup, fname);
- }
- /* if original file does exist throw away the copy */
- if (os_file_exists(fname)) {
- os_remove((char *)backup);
- }
- } else {
- /* try to put the original file back */
- vim_rename(backup, fname);
- }
- }
-
- /* if original file no longer exists give an extra warning */
- if (!newfile && !os_file_exists(fname)) {
- end = 0;
- }
- }
-
- if (wfname != fname)
- free(wfname);
- goto fail;
- }
- errmsg = NULL;
-
-
- write_info.bw_fd = fd;
-
- if (*buf->b_p_key != NUL && !filtering) {
- char_u *header;
- int header_len;
-
- header = prepare_crypt_write(buf, &header_len);
- if (header == NULL)
- end = 0;
- else {
- /* Write magic number, so that Vim knows that this file is
- * encrypted when reading it again. This also undergoes utf-8 to
- * ucs-2/4 conversion when needed. */
- write_info.bw_buf = header;
- write_info.bw_len = header_len;
- write_info.bw_flags = FIO_NOCONVERT;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0;
- wb_flags |= FIO_ENCRYPTED;
- free(header);
- }
- }
-
- write_info.bw_buf = buffer;
- nchars = 0;
-
- /* use "++bin", "++nobin" or 'binary' */
- if (eap != NULL && eap->force_bin != 0)
- write_bin = (eap->force_bin == FORCE_BIN);
- else
- write_bin = buf->b_p_bin;
-
- /*
- * The BOM is written just after the encryption magic number.
- * Skip it when appending and the file already existed, the BOM only makes
- * sense at the start of the file.
- */
- if (buf->b_p_bomb && !write_bin && (!append || perm < 0)) {
- write_info.bw_len = make_bom(buffer, fenc);
- if (write_info.bw_len > 0) {
- /* don't convert, do encryption */
- write_info.bw_flags = FIO_NOCONVERT | wb_flags;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0;
- else
- nchars += write_info.bw_len;
- }
- }
- write_info.bw_start_lnum = start;
-
- write_undo_file = (buf->b_p_udf && overwriting && !append
- && !filtering && reset_changed);
- if (write_undo_file)
- /* Prepare for computing the hash value of the text. */
- sha256_start(&sha_ctx);
-
- write_info.bw_len = bufsize;
-#ifdef HAS_BW_FLAGS
- write_info.bw_flags = wb_flags;
-#endif
- fileformat = get_fileformat_force(buf, eap);
- s = buffer;
- len = 0;
- for (lnum = start; lnum <= end; ++lnum) {
- /*
- * The next while loop is done once for each character written.
- * Keep it fast!
- */
- ptr = ml_get_buf(buf, lnum, FALSE) - 1;
- if (write_undo_file)
- sha256_update(&sha_ctx, ptr + 1, (uint32_t)(STRLEN(ptr + 1) + 1));
- while ((c = *++ptr) != NUL) {
- if (c == NL)
- *s = NUL; /* replace newlines with NULs */
- else if (c == CAR && fileformat == EOL_MAC)
- *s = NL; /* Mac: replace CRs with NLs */
- else
- *s = c;
- ++s;
- if (++len != bufsize)
- continue;
- if (buf_write_bytes(&write_info) == FAIL) {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
- write_info.bw_start_lnum = lnum;
- }
- /* write failed or last line has no EOL: stop here */
- if (end == 0
- || (lnum == end
- && write_bin
- && (lnum == buf->b_no_eol_lnum
- || (lnum == buf->b_ml.ml_line_count && !buf->b_p_eol)))) {
- ++lnum; /* written the line, count it */
- no_eol = TRUE;
- break;
- }
- if (fileformat == EOL_UNIX)
- *s++ = NL;
- else {
- *s++ = CAR; /* EOL_MAC or EOL_DOS: write CR */
- if (fileformat == EOL_DOS) { /* write CR-NL */
- if (++len == bufsize) {
- if (buf_write_bytes(&write_info) == FAIL) {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
- }
- *s++ = NL;
- }
- }
- if (++len == bufsize && end) {
- if (buf_write_bytes(&write_info) == FAIL) {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
-
- ui_breakcheck();
- if (got_int) {
- end = 0; /* Interrupted, break loop */
- break;
- }
- }
- }
- if (len > 0 && end > 0) {
- write_info.bw_len = len;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0; /* write error */
- nchars += len;
- }
-
-#if defined(UNIX) && defined(HAVE_FSYNC)
- /* On many journalling file systems there is a bug that causes both the
- * original and the backup file to be lost when halting the system right
- * after writing the file. That's because only the meta-data is
- * journalled. Syncing the file slows down the system, but assures it has
- * been written to disk and we don't lose it.
- * For a device do try the fsync() but don't complain if it does not work
- * (could be a pipe).
- * If the 'fsync' option is FALSE, don't fsync(). Useful for laptops. */
- if (p_fs && fsync(fd) != 0 && !device) {
- errmsg = (char_u *)_("E667: Fsync failed");
- end = 0;
- }
-#endif
-
-#ifdef HAVE_SELINUX
- /* Probably need to set the security context. */
- if (!backup_copy)
- mch_copy_sec(backup, wfname);
-#endif
-
-#ifdef UNIX
- /* When creating a new file, set its owner/group to that of the original
- * file. Get the new device and inode number. */
- if (backup != NULL && !backup_copy) {
-# ifdef HAVE_FCHOWN
-
- /* don't change the owner when it's already OK, some systems remove
- * permission or ACL stuff */
- FileInfo file_info;
- if (!os_get_file_info((char *)wfname, &file_info)
- || file_info.stat.st_uid != file_info_old.stat.st_uid
- || file_info.stat.st_gid != file_info_old.stat.st_gid) {
- fchown(fd, file_info_old.stat.st_uid, file_info_old.stat.st_gid);
- if (perm >= 0) /* set permission again, may have changed */
- (void)os_setperm(wfname, perm);
- }
-# endif
- buf_setino(buf);
- } else if (!buf->b_dev_valid)
- /* Set the inode when creating a new file. */
- buf_setino(buf);
-#endif
-
- if (close(fd) != 0) {
- errmsg = (char_u *)_("E512: Close failed");
- end = 0;
- }
-
-#ifdef UNIX
- if (made_writable)
- perm &= ~0200; /* reset 'w' bit for security reasons */
-#endif
- if (perm >= 0) /* set perm. of new file same as old file */
- (void)os_setperm(wfname, perm);
-#ifdef HAVE_ACL
- /* Probably need to set the ACL before changing the user (can't set the
- * ACL on a file the user doesn't own). */
- if (!backup_copy)
- mch_set_acl(wfname, acl);
-#endif
- crypt_method_used = use_crypt_method;
- if (wb_flags & FIO_ENCRYPTED)
- crypt_pop_state();
-
-
- if (wfname != fname) {
- /*
- * The file was written to a temp file, now it needs to be converted
- * with 'charconvert' to (overwrite) the output file.
- */
- if (end != 0) {
- if (eval_charconvert(enc_utf8 ? (char_u *)"utf-8" : p_enc, fenc,
- wfname, fname) == FAIL) {
- write_info.bw_conv_error = TRUE;
- end = 0;
- }
- }
- os_remove((char *)wfname);
- free(wfname);
- }
-
- if (end == 0) {
- if (errmsg == NULL) {
- if (write_info.bw_conv_error) {
- if (write_info.bw_conv_error_lnum == 0)
- errmsg = (char_u *)_(
- "E513: write error, conversion failed (make 'fenc' empty to override)");
- else {
- errmsg_allocated = TRUE;
- errmsg = alloc(300);
- vim_snprintf((char *)errmsg, 300,
- _("E513: write error, conversion failed in line %" PRId64
- " (make 'fenc' empty to override)"),
- (int64_t)write_info.bw_conv_error_lnum);
- }
- } else if (got_int)
- errmsg = (char_u *)_(e_interr);
- else
- errmsg = (char_u *)_("E514: write error (file system full?)");
- }
-
- /*
- * If we have a backup file, try to put it in place of the new file,
- * because the new file is probably corrupt. This avoids losing the
- * original file when trying to make a backup when writing the file a
- * second time.
- * When "backup_copy" is set we need to copy the backup over the new
- * file. Otherwise rename the backup file.
- * If this is OK, don't give the extra warning message.
- */
- if (backup != NULL) {
- if (backup_copy) {
- /* This may take a while, if we were interrupted let the user
- * know we got the message. */
- if (got_int) {
- MSG(_(e_interr));
- out_flush();
- }
- if ((fd = mch_open((char *)backup, O_RDONLY, 0)) >= 0) {
- if ((write_info.bw_fd = mch_open((char *)fname,
- O_WRONLY | O_CREAT | O_TRUNC,
- perm & 0777)) >= 0) {
- /* copy the file. */
- write_info.bw_buf = smallbuf;
-#ifdef HAS_BW_FLAGS
- write_info.bw_flags = FIO_NOCONVERT;
-#endif
- while ((write_info.bw_len = read_eintr(fd, smallbuf,
- SMBUFSIZE)) > 0)
- if (buf_write_bytes(&write_info) == FAIL)
- break;
-
- if (close(write_info.bw_fd) >= 0
- && write_info.bw_len == 0)
- end = 1; /* success */
- }
- close(fd); /* ignore errors for closing read file */
- }
- } else {
- if (vim_rename(backup, fname) == 0)
- end = 1;
- }
- }
- goto fail;
- }
-
- lnum -= start; /* compute number of written lines */
- --no_wait_return; /* may wait for return now */
-
-#if !defined(UNIX)
- fname = sfname; /* use shortname now, for the messages */
-#endif
- if (!filtering) {
- msg_add_fname(buf, fname); /* put fname in IObuff with quotes */
- c = FALSE;
- if (write_info.bw_conv_error) {
- STRCAT(IObuff, _(" CONVERSION ERROR"));
- c = TRUE;
- if (write_info.bw_conv_error_lnum != 0)
- vim_snprintf_add((char *)IObuff, IOSIZE, _(" in line %" PRId64 ";"),
- (int64_t)write_info.bw_conv_error_lnum);
- } else if (notconverted) {
- STRCAT(IObuff, _("[NOT converted]"));
- c = TRUE;
- } else if (converted) {
- STRCAT(IObuff, _("[converted]"));
- c = TRUE;
- }
- if (device) {
- STRCAT(IObuff, _("[Device]"));
- c = TRUE;
- } else if (newfile) {
- STRCAT(IObuff, shortmess(SHM_NEW) ? _("[New]") : _("[New File]"));
- c = TRUE;
- }
- if (no_eol) {
- msg_add_eol();
- c = TRUE;
- }
- /* may add [unix/dos/mac] */
- if (msg_add_fileformat(fileformat))
- c = TRUE;
- if (wb_flags & FIO_ENCRYPTED) {
- if (crypt_method_used == 1)
- STRCAT(IObuff, _("[blowfish]"));
- else
- STRCAT(IObuff, _("[crypted]"));
- c = TRUE;
- }
- msg_add_lines(c, (long)lnum, nchars); /* add line/char count */
- if (!shortmess(SHM_WRITE)) {
- if (append)
- STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [a]") : _(" appended"));
- else
- STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [w]") : _(" written"));
- }
-
- set_keep_msg(msg_trunc_attr(IObuff, FALSE, 0), 0);
- }
-
- /* When written everything correctly: reset 'modified'. Unless not
- * writing to the original file and '+' is not in 'cpoptions'. */
- if (reset_changed && whole && !append
- && !write_info.bw_conv_error
- && (overwriting || vim_strchr(p_cpo, CPO_PLUS) != NULL)
- ) {
- unchanged(buf, TRUE);
- u_unchanged(buf);
- u_update_save_nr(buf);
- }
-
- /*
- * If written to the current file, update the timestamp of the swap file
- * and reset the BF_WRITE_MASK flags. Also sets buf->b_mtime.
- */
- if (overwriting) {
- ml_timestamp(buf);
- if (append)
- buf->b_flags &= ~BF_NEW;
- else
- buf->b_flags &= ~BF_WRITE_MASK;
- }
-
- /*
- * If we kept a backup until now, and we are in patch mode, then we make
- * the backup file our 'original' file.
- */
- if (*p_pm && dobackup) {
- char *org = (char *)modname(fname, p_pm, FALSE);
-
- if (backup != NULL) {
- /*
- * If the original file does not exist yet
- * the current backup file becomes the original file
- */
- if (org == NULL)
- EMSG(_("E205: Patchmode: can't save original file"));
- else if (!os_file_exists((char_u *)org)) {
- vim_rename(backup, (char_u *)org);
- free(backup); /* don't delete the file */
- backup = NULL;
-#ifdef UNIX
- set_file_time((char_u *)org,
- file_info_old.stat.st_atim.tv_sec,
- file_info_old.stat.st_mtim.tv_sec);
-#endif
- }
- }
- /*
- * If there is no backup file, remember that a (new) file was
- * created.
- */
- else {
- int empty_fd;
-
- if (org == NULL
- || (empty_fd = mch_open(org,
- O_CREAT | O_EXCL | O_NOFOLLOW,
- perm < 0 ? 0666 : (perm & 0777))) < 0)
- EMSG(_("E206: patchmode: can't touch empty original file"));
- else
- close(empty_fd);
- }
- if (org != NULL) {
- os_setperm((char_u *)org, os_getperm(fname) & 0777);
- free(org);
- }
- }
-
- /*
- * Remove the backup unless 'backup' option is set
- */
- if (!p_bk && backup != NULL && os_remove((char *)backup) != 0)
- EMSG(_("E207: Can't delete backup file"));
-
-
- goto nofail;
-
- /*
- * Finish up. We get here either after failure or success.
- */
-fail:
- --no_wait_return; /* may wait for return now */
-nofail:
-
- /* Done saving, we accept changed buffer warnings again */
- buf->b_saving = FALSE;
-
- free(backup);
- if (buffer != smallbuf)
- free(buffer);
- free(fenc_tofree);
- free(write_info.bw_conv_buf);
-# ifdef USE_ICONV
- if (write_info.bw_iconv_fd != (iconv_t)-1) {
- iconv_close(write_info.bw_iconv_fd);
- write_info.bw_iconv_fd = (iconv_t)-1;
- }
-# endif
-#ifdef HAVE_ACL
- mch_free_acl(acl);
-#endif
-
- if (errmsg != NULL) {
- int numlen = errnum != NULL ? (int)STRLEN(errnum) : 0;
-
- attr = hl_attr(HLF_E); /* set highlight for error messages */
- msg_add_fname(buf,
-#ifndef UNIX
- sfname
-#else
- fname
-#endif
- ); /* put file name in IObuff with quotes */
- if (STRLEN(IObuff) + STRLEN(errmsg) + numlen >= IOSIZE)
- IObuff[IOSIZE - STRLEN(errmsg) - numlen - 1] = NUL;
- /* If the error message has the form "is ...", put the error number in
- * front of the file name. */
- if (errnum != NULL) {
- STRMOVE(IObuff + numlen, IObuff);
- memmove(IObuff, errnum, (size_t)numlen);
- }
- STRCAT(IObuff, errmsg);
- emsg(IObuff);
- if (errmsg_allocated)
- free(errmsg);
-
- retval = FAIL;
- if (end == 0) {
- MSG_PUTS_ATTR(_("\nWARNING: Original file may be lost or damaged\n"),
- attr | MSG_HIST);
- MSG_PUTS_ATTR(_(
- "don't quit the editor until the file is successfully written!"),
- attr | MSG_HIST);
-
- /* Update the timestamp to avoid an "overwrite changed file"
- * prompt when writing again. */
- if (os_get_file_info((char *)fname, &file_info_old)) {
- buf_store_file_info(buf, &file_info_old);
- buf->b_mtime_read = buf->b_mtime;
- }
- }
- }
- msg_scroll = msg_save;
-
- /*
- * When writing the whole file and 'undofile' is set, also write the undo
- * file.
- */
- if (retval == OK && write_undo_file) {
- char_u hash[UNDO_HASH_SIZE];
-
- sha256_finish(&sha_ctx, hash);
- u_write_undo(NULL, FALSE, buf, hash);
- }
-
- if (!should_abort(retval)) {
- aco_save_T aco;
-
- curbuf->b_no_eol_lnum = 0; /* in case it was set by the previous read */
-
- /*
- * Apply POST autocommands.
- * Careful: The autocommands may call buf_write() recursively!
- */
- aucmd_prepbuf(&aco, buf);
-
- if (append)
- apply_autocmds_exarg(EVENT_FILEAPPENDPOST, fname, fname,
- FALSE, curbuf, eap);
- else if (filtering)
- apply_autocmds_exarg(EVENT_FILTERWRITEPOST, NULL, fname,
- FALSE, curbuf, eap);
- else if (reset_changed && whole)
- apply_autocmds_exarg(EVENT_BUFWRITEPOST, fname, fname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEWRITEPOST, fname, fname,
- FALSE, curbuf, eap);
-
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
-
- if (aborting()) /* autocmds may abort script processing */
- retval = FALSE;
- }
-
- got_int |= prev_got_int;
-
- return retval;
-}
-
-/*
- * Set the name of the current buffer. Use when the buffer doesn't have a
- * name and a ":r" or ":w" command with a file name is used.
- */
-static int set_rw_fname(char_u *fname, char_u *sfname)
-{
- buf_T *buf = curbuf;
-
- /* It's like the unnamed buffer is deleted.... */
- if (curbuf->b_p_bl)
- apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
- apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, FALSE, curbuf);
- if (aborting()) /* autocmds may abort script processing */
- return FAIL;
- if (curbuf != buf) {
- /* We are in another buffer now, don't do the renaming. */
- EMSG(_(e_auchangedbuf));
- return FAIL;
- }
-
- if (setfname(curbuf, fname, sfname, FALSE) == OK)
- curbuf->b_flags |= BF_NOTEDITED;
-
- /* ....and a new named one is created */
- apply_autocmds(EVENT_BUFNEW, NULL, NULL, FALSE, curbuf);
- if (curbuf->b_p_bl)
- apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, curbuf);
- if (aborting()) /* autocmds may abort script processing */
- return FAIL;
-
- /* Do filetype detection now if 'filetype' is empty. */
- if (*curbuf->b_p_ft == NUL) {
- if (au_has_group((char_u *)"filetypedetect"))
- (void)do_doautocmd((char_u *)"filetypedetect BufRead", FALSE);
- do_modelines(0);
- }
-
- return OK;
-}
-
-/*
- * Put file name into IObuff with quotes.
- */
-void msg_add_fname(buf_T *buf, char_u *fname)
-{
- if (fname == NULL)
- fname = (char_u *)"-stdin-";
- home_replace(buf, fname, IObuff + 1, IOSIZE - 4, TRUE);
- IObuff[0] = '"';
- STRCAT(IObuff, "\" ");
-}
-
-/*
- * Append message for text mode to IObuff.
- * Return TRUE if something appended.
- */
-static int msg_add_fileformat(int eol_type)
-{
-#ifndef USE_CRNL
- if (eol_type == EOL_DOS) {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[dos]") : _("[dos format]"));
- return TRUE;
- }
-#endif
-#ifndef USE_CR
- if (eol_type == EOL_MAC) {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[mac]") : _("[mac format]"));
- return TRUE;
- }
-#endif
-#if defined(USE_CRNL) || defined(USE_CR)
- if (eol_type == EOL_UNIX) {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[unix]") : _("[unix format]"));
- return TRUE;
- }
-#endif
- return FALSE;
-}
-
-/*
- * Append line and character count to IObuff.
- */
-void msg_add_lines(int insert_space, long lnum, off_t nchars)
-{
- char_u *p;
-
- p = IObuff + STRLEN(IObuff);
-
- if (insert_space)
- *p++ = ' ';
- if (shortmess(SHM_LINES)) {
- sprintf((char *)p, "%" PRId64 "L, %" PRId64 "C",
- (int64_t)lnum, (int64_t)nchars);
- }
- else {
- if (lnum == 1)
- STRCPY(p, _("1 line, "));
- else
- sprintf((char *)p, _("%" PRId64 " lines, "), (int64_t)lnum);
- p += STRLEN(p);
- if (nchars == 1)
- STRCPY(p, _("1 character"));
- else {
- sprintf((char *)p, _("%" PRId64 " characters"), (int64_t)nchars);
- }
- }
-}
-
-/*
- * Append message for missing line separator to IObuff.
- */
-static void msg_add_eol(void)
-{
- STRCAT(IObuff,
- shortmess(SHM_LAST) ? _("[noeol]") : _("[Incomplete last line]"));
-}
-
-/*
- * Check modification time of file, before writing to it.
- * The size isn't checked, because using a tool like "gzip" takes care of
- * using the same timestamp but can't set the size.
- */
-static int check_mtime(buf_T *buf, FileInfo *file_info)
-{
- if (buf->b_mtime_read != 0
- && time_differs((long)file_info->stat.st_mtim.tv_sec,
- buf->b_mtime_read)) {
- msg_scroll = TRUE; /* don't overwrite messages here */
- msg_silent = 0; /* must give this prompt */
- /* don't use emsg() here, don't want to flush the buffers */
- MSG_ATTR(_("WARNING: The file has been changed since reading it!!!"),
- hl_attr(HLF_E));
- if (ask_yesno((char_u *)_("Do you really want to write to it"),
- TRUE) == 'n')
- return FAIL;
- msg_scroll = FALSE; /* always overwrite the file message now */
- }
- return OK;
-}
-
-static int time_differs(long t1, long t2)
-{
-#if defined(__linux__) || defined(MSWIN)
- /* On a FAT filesystem, esp. under Linux, there are only 5 bits to store
- * the seconds. Since the roundoff is done when flushing the inode, the
- * time may change unexpectedly by one second!!! */
- return t1 - t2 > 1 || t2 - t1 > 1;
-#else
- return t1 != t2;
-#endif
-}
-
-/*
- * Call write() to write a number of bytes to the file.
- * Handles encryption and 'encoding' conversion.
- *
- * Return FAIL for failure, OK otherwise.
- */
-static int buf_write_bytes(struct bw_info *ip)
-{
- int wlen;
- char_u *buf = ip->bw_buf; /* data to write */
- int len = ip->bw_len; /* length of data */
-#ifdef HAS_BW_FLAGS
- int flags = ip->bw_flags; /* extra flags */
-#endif
-
- /*
- * Skip conversion when writing the crypt magic number or the BOM.
- */
- if (!(flags & FIO_NOCONVERT)) {
- char_u *p;
- unsigned c;
- int n;
-
- if (flags & FIO_UTF8) {
- /*
- * Convert latin1 in the buffer to UTF-8 in the file.
- */
- p = ip->bw_conv_buf; /* translate to buffer */
- for (wlen = 0; wlen < len; ++wlen)
- p += utf_char2bytes(buf[wlen], p);
- buf = ip->bw_conv_buf;
- len = (int)(p - ip->bw_conv_buf);
- } else if (flags & (FIO_UCS4 | FIO_UTF16 | FIO_UCS2 | FIO_LATIN1)) {
- /*
- * Convert UTF-8 bytes in the buffer to UCS-2, UCS-4, UTF-16 or
- * Latin1 chars in the file.
- */
- if (flags & FIO_LATIN1)
- p = buf; /* translate in-place (can only get shorter) */
- else
- p = ip->bw_conv_buf; /* translate to buffer */
- for (wlen = 0; wlen < len; wlen += n) {
- if (wlen == 0 && ip->bw_restlen != 0) {
- int l;
-
- /* Use remainder of previous call. Append the start of
- * buf[] to get a full sequence. Might still be too
- * short! */
- l = CONV_RESTLEN - ip->bw_restlen;
- if (l > len)
- l = len;
- memmove(ip->bw_rest + ip->bw_restlen, buf, (size_t)l);
- n = utf_ptr2len_len(ip->bw_rest, ip->bw_restlen + l);
- if (n > ip->bw_restlen + len) {
- /* We have an incomplete byte sequence at the end to
- * be written. We can't convert it without the
- * remaining bytes. Keep them for the next call. */
- if (ip->bw_restlen + len > CONV_RESTLEN)
- return FAIL;
- ip->bw_restlen += len;
- break;
- }
- if (n > 1)
- c = utf_ptr2char(ip->bw_rest);
- else
- c = ip->bw_rest[0];
- if (n >= ip->bw_restlen) {
- n -= ip->bw_restlen;
- ip->bw_restlen = 0;
- } else {
- ip->bw_restlen -= n;
- memmove(ip->bw_rest, ip->bw_rest + n,
- (size_t)ip->bw_restlen);
- n = 0;
- }
- } else {
- n = utf_ptr2len_len(buf + wlen, len - wlen);
- if (n > len - wlen) {
- /* We have an incomplete byte sequence at the end to
- * be written. We can't convert it without the
- * remaining bytes. Keep them for the next call. */
- if (len - wlen > CONV_RESTLEN)
- return FAIL;
- ip->bw_restlen = len - wlen;
- memmove(ip->bw_rest, buf + wlen,
- (size_t)ip->bw_restlen);
- break;
- }
- if (n > 1)
- c = utf_ptr2char(buf + wlen);
- else
- c = buf[wlen];
- }
-
- if (ucs2bytes(c, &p, flags) && !ip->bw_conv_error) {
- ip->bw_conv_error = TRUE;
- ip->bw_conv_error_lnum = ip->bw_start_lnum;
- }
- if (c == NL)
- ++ip->bw_start_lnum;
- }
- if (flags & FIO_LATIN1)
- len = (int)(p - buf);
- else {
- buf = ip->bw_conv_buf;
- len = (int)(p - ip->bw_conv_buf);
- }
- }
-
-
-# ifdef MACOS_CONVERT
- else if (flags & FIO_MACROMAN) {
- /*
- * Convert UTF-8 or latin1 to Apple MacRoman.
- */
- char_u *from;
- size_t fromlen;
-
- if (ip->bw_restlen > 0) {
- /* Need to concatenate the remainder of the previous call and
- * the bytes of the current call. Use the end of the
- * conversion buffer for this. */
- fromlen = len + ip->bw_restlen;
- from = ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
- memmove(from, ip->bw_rest, (size_t)ip->bw_restlen);
- memmove(from + ip->bw_restlen, buf, (size_t)len);
- } else {
- from = buf;
- fromlen = len;
- }
-
- if (enc2macroman(from, fromlen,
- ip->bw_conv_buf, &len, ip->bw_conv_buflen,
- ip->bw_rest, &ip->bw_restlen) == FAIL) {
- ip->bw_conv_error = TRUE;
- return FAIL;
- }
- buf = ip->bw_conv_buf;
- }
-# endif
-
-# ifdef USE_ICONV
- if (ip->bw_iconv_fd != (iconv_t)-1) {
- const char *from;
- size_t fromlen;
- char *to;
- size_t tolen;
-
- /* Convert with iconv(). */
- if (ip->bw_restlen > 0) {
- char *fp;
-
- /* Need to concatenate the remainder of the previous call and
- * the bytes of the current call. Use the end of the
- * conversion buffer for this. */
- fromlen = len + ip->bw_restlen;
- fp = (char *)ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
- memmove(fp, ip->bw_rest, (size_t)ip->bw_restlen);
- memmove(fp + ip->bw_restlen, buf, (size_t)len);
- from = fp;
- tolen = ip->bw_conv_buflen - fromlen;
- } else {
- from = (const char *)buf;
- fromlen = len;
- tolen = ip->bw_conv_buflen;
- }
- to = (char *)ip->bw_conv_buf;
-
- if (ip->bw_first) {
- size_t save_len = tolen;
-
- /* output the initial shift state sequence */
- (void)iconv(ip->bw_iconv_fd, NULL, NULL, &to, &tolen);
-
- /* There is a bug in iconv() on Linux (which appears to be
- * wide-spread) which sets "to" to NULL and messes up "tolen".
- */
- if (to == NULL) {
- to = (char *)ip->bw_conv_buf;
- tolen = save_len;
- }
- ip->bw_first = FALSE;
- }
-
- /*
- * If iconv() has an error or there is not enough room, fail.
- */
- if ((iconv(ip->bw_iconv_fd, (void *)&from, &fromlen, &to, &tolen)
- == (size_t)-1 && ICONV_ERRNO != ICONV_EINVAL)
- || fromlen > CONV_RESTLEN) {
- ip->bw_conv_error = TRUE;
- return FAIL;
- }
-
- /* copy remainder to ip->bw_rest[] to be used for the next call. */
- if (fromlen > 0)
- memmove(ip->bw_rest, (void *)from, fromlen);
- ip->bw_restlen = (int)fromlen;
-
- buf = ip->bw_conv_buf;
- len = (int)((char_u *)to - ip->bw_conv_buf);
- }
-# endif
- }
-
- if (flags & FIO_ENCRYPTED) /* encrypt the data */
- crypt_encode(buf, len, buf);
-
- wlen = write_eintr(ip->bw_fd, buf, len);
- return (wlen < len) ? FAIL : OK;
-}
-
-/*
- * Convert a Unicode character to bytes.
- * Return TRUE for an error, FALSE when it's OK.
- */
-static int
-ucs2bytes (
- unsigned c, /* in: character */
- char_u **pp, /* in/out: pointer to result */
- int flags /* FIO_ flags */
-)
-{
- char_u *p = *pp;
- int error = FALSE;
- int cc;
-
-
- if (flags & FIO_UCS4) {
- if (flags & FIO_ENDIAN_L) {
- *p++ = c;
- *p++ = (c >> 8);
- *p++ = (c >> 16);
- *p++ = (c >> 24);
- } else {
- *p++ = (c >> 24);
- *p++ = (c >> 16);
- *p++ = (c >> 8);
- *p++ = c;
- }
- } else if (flags & (FIO_UCS2 | FIO_UTF16)) {
- if (c >= 0x10000) {
- if (flags & FIO_UTF16) {
- /* Make two words, ten bits of the character in each. First
- * word is 0xd800 - 0xdbff, second one 0xdc00 - 0xdfff */
- c -= 0x10000;
- if (c >= 0x100000)
- error = TRUE;
- cc = ((c >> 10) & 0x3ff) + 0xd800;
- if (flags & FIO_ENDIAN_L) {
- *p++ = cc;
- *p++ = ((unsigned)cc >> 8);
- } else {
- *p++ = ((unsigned)cc >> 8);
- *p++ = cc;
- }
- c = (c & 0x3ff) + 0xdc00;
- } else
- error = TRUE;
- }
- if (flags & FIO_ENDIAN_L) {
- *p++ = c;
- *p++ = (c >> 8);
- } else {
- *p++ = (c >> 8);
- *p++ = c;
- }
- } else { /* Latin1 */
- if (c >= 0x100) {
- error = TRUE;
- *p++ = 0xBF;
- } else
- *p++ = c;
- }
-
- *pp = p;
- return error;
-}
-
-/*
- * Return TRUE if file encoding "fenc" requires conversion from or to
- * 'encoding'.
- */
-static int need_conversion(char_u *fenc)
-{
- int same_encoding;
- int enc_flags;
- int fenc_flags;
-
- if (*fenc == NUL || STRCMP(p_enc, fenc) == 0) {
- same_encoding = TRUE;
- fenc_flags = 0;
- } else {
- /* Ignore difference between "ansi" and "latin1", "ucs-4" and
- * "ucs-4be", etc. */
- enc_flags = get_fio_flags(p_enc);
- fenc_flags = get_fio_flags(fenc);
- same_encoding = (enc_flags != 0 && fenc_flags == enc_flags);
- }
- if (same_encoding) {
- /* Specified encoding matches with 'encoding'. This requires
- * conversion when 'encoding' is Unicode but not UTF-8. */
- return enc_unicode != 0;
- }
-
- /* Encodings differ. However, conversion is not needed when 'enc' is any
- * Unicode encoding and the file is UTF-8. */
- return !(enc_utf8 && fenc_flags == FIO_UTF8);
-}
-
-/*
- * Check "ptr" for a unicode encoding and return the FIO_ flags needed for the
- * internal conversion.
- * if "ptr" is an empty string, use 'encoding'.
- */
-static int get_fio_flags(char_u *ptr)
-{
- int prop;
-
- if (*ptr == NUL)
- ptr = p_enc;
-
- prop = enc_canon_props(ptr);
- if (prop & ENC_UNICODE) {
- if (prop & ENC_2BYTE) {
- if (prop & ENC_ENDIAN_L)
- return FIO_UCS2 | FIO_ENDIAN_L;
- return FIO_UCS2;
- }
- if (prop & ENC_4BYTE) {
- if (prop & ENC_ENDIAN_L)
- return FIO_UCS4 | FIO_ENDIAN_L;
- return FIO_UCS4;
- }
- if (prop & ENC_2WORD) {
- if (prop & ENC_ENDIAN_L)
- return FIO_UTF16 | FIO_ENDIAN_L;
- return FIO_UTF16;
- }
- return FIO_UTF8;
- }
- if (prop & ENC_LATIN1)
- return FIO_LATIN1;
- /* must be ENC_DBCS, requires iconv() */
- return 0;
-}
-
-
-
-/*
- * Check for a Unicode BOM (Byte Order Mark) at the start of p[size].
- * "size" must be at least 2.
- * Return the name of the encoding and set "*lenp" to the length.
- * Returns NULL when no BOM found.
- */
-static char_u *check_for_bom(char_u *p, long size, int *lenp, int flags)
-{
- char *name = NULL;
- int len = 2;
-
- if (p[0] == 0xef && p[1] == 0xbb && size >= 3 && p[2] == 0xbf
- && (flags == FIO_ALL || flags == FIO_UTF8 || flags == 0)) {
- name = "utf-8"; /* EF BB BF */
- len = 3;
- } else if (p[0] == 0xff && p[1] == 0xfe) {
- if (size >= 4 && p[2] == 0 && p[3] == 0
- && (flags == FIO_ALL || flags == (FIO_UCS4 | FIO_ENDIAN_L))) {
- name = "ucs-4le"; /* FF FE 00 00 */
- len = 4;
- } else if (flags == (FIO_UCS2 | FIO_ENDIAN_L))
- name = "ucs-2le"; /* FF FE */
- else if (flags == FIO_ALL || flags == (FIO_UTF16 | FIO_ENDIAN_L))
- /* utf-16le is preferred, it also works for ucs-2le text */
- name = "utf-16le"; /* FF FE */
- } else if (p[0] == 0xfe && p[1] == 0xff
- && (flags == FIO_ALL || flags == FIO_UCS2 || flags ==
- FIO_UTF16)) {
- /* Default to utf-16, it works also for ucs-2 text. */
- if (flags == FIO_UCS2)
- name = "ucs-2"; /* FE FF */
- else
- name = "utf-16"; /* FE FF */
- } else if (size >= 4 && p[0] == 0 && p[1] == 0 && p[2] == 0xfe
- && p[3] == 0xff && (flags == FIO_ALL || flags == FIO_UCS4)) {
- name = "ucs-4"; /* 00 00 FE FF */
- len = 4;
- }
-
- *lenp = len;
- return (char_u *)name;
-}
-
-/*
- * Generate a BOM in "buf[4]" for encoding "name".
- * Return the length of the BOM (zero when no BOM).
- */
-static int make_bom(char_u *buf, char_u *name)
-{
- int flags;
- char_u *p;
-
- flags = get_fio_flags(name);
-
- /* Can't put a BOM in a non-Unicode file. */
- if (flags == FIO_LATIN1 || flags == 0)
- return 0;
-
- if (flags == FIO_UTF8) { /* UTF-8 */
- buf[0] = 0xef;
- buf[1] = 0xbb;
- buf[2] = 0xbf;
- return 3;
- }
- p = buf;
- (void)ucs2bytes(0xfeff, &p, flags);
- return (int)(p - buf);
-}
-
-/*
- * Shorten filenames for all buffers.
- * When "force" is TRUE: Use full path from now on for files currently being
- * edited, both for file name and swap file name. Try to shorten the file
- * names a bit, if safe to do so.
- * When "force" is FALSE: Only try to shorten absolute file names.
- * For buffers that have buftype "nofile" or "scratch": never change the file
- * name.
- */
-void shorten_fnames(int force)
-{
- char_u dirname[MAXPATHL];
- buf_T *buf;
- char_u *p;
-
- os_dirname(dirname, MAXPATHL);
- for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
- if (buf->b_fname != NULL
- && !bt_nofile(buf)
- && !path_with_url(buf->b_fname)
- && (force
- || buf->b_sfname == NULL
- || path_is_absolute_path(buf->b_sfname))) {
- free(buf->b_sfname);
- buf->b_sfname = NULL;
- p = path_shorten_fname(buf->b_ffname, dirname);
- if (p != NULL) {
- buf->b_sfname = vim_strsave(p);
- buf->b_fname = buf->b_sfname;
- }
- if (p == NULL || buf->b_fname == NULL)
- buf->b_fname = buf->b_ffname;
- }
-
- /* Always make the swap file name a full path, a "nofile" buffer may
- * also have a swap file. */
- mf_fullname(buf->b_ml.ml_mfp);
- }
- status_redraw_all();
- redraw_tabline = TRUE;
-}
-
-/*
- * add extension to file name - change path/fo.o.h to path/fo.o.h.ext
- *
- * Assumed that fname is a valid name found in the filesystem we assure that
- * the return value is a different name and ends in 'ext'.
- * "ext" MUST be at most 4 characters long if it starts with a dot, 3
- * characters otherwise.
- * Space for the returned name is allocated, must be freed later.
- * Returns NULL when out of memory.
- */
-char_u *
-modname (
- char_u *fname,
- char_u *ext,
- int prepend_dot /* may prepend a '.' to file name */
-)
-{
- char_u *retval;
- char_u *s;
- char_u *e;
- char_u *ptr;
- int fnamelen, extlen;
-
- extlen = (int)STRLEN(ext);
-
- /*
- * If there is no file name we must get the name of the current directory
- * (we need the full path in case :cd is used).
- */
- if (fname == NULL || *fname == NUL) {
- retval = alloc((unsigned)(MAXPATHL + extlen + 3));
- if (os_dirname(retval, MAXPATHL) == FAIL ||
- (fnamelen = (int)STRLEN(retval)) == 0) {
- free(retval);
- return NULL;
- }
- if (!after_pathsep(retval, retval + fnamelen)) {
- retval[fnamelen++] = PATHSEP;
- retval[fnamelen] = NUL;
- }
- prepend_dot = FALSE; /* nothing to prepend a dot to */
- } else {
- fnamelen = (int)STRLEN(fname);
- retval = alloc((unsigned)(fnamelen + extlen + 3));
- STRCPY(retval, fname);
- }
-
- /*
- * search backwards until we hit a '/', '\' or ':'.
- * Then truncate what is after the '/', '\' or ':' to BASENAMELEN characters.
- */
- for (ptr = retval + fnamelen; ptr > retval; mb_ptr_back(retval, ptr)) {
- if (vim_ispathsep(*ptr)) {
- ++ptr;
- break;
- }
- }
-
- /* the file name has at most BASENAMELEN characters. */
- if (STRLEN(ptr) > BASENAMELEN)
- ptr[BASENAMELEN] = '\0';
-
- s = ptr + STRLEN(ptr);
-
-#if defined(WIN3264)
- /*
- * If there is no file name, and the extension starts with '.', put a
- * '_' before the dot, because just ".ext" may be invalid if it's on a
- * FAT partition, and on HPFS it doesn't matter.
- */
- else if ((fname == NULL || *fname == NUL) && *ext == '.')
- *s++ = '_';
-#endif
-
- /*
- * Append the extension.
- * ext can start with '.' and cannot exceed 3 more characters.
- */
- STRCPY(s, ext);
-
- /*
- * Prepend the dot.
- */
- if (prepend_dot && *(e = path_tail(retval)) != '.') {
- STRMOVE(e + 1, e);
- *e = '.';
- }
-
- /*
- * Check that, after appending the extension, the file name is really
- * different.
- */
- if (fname != NULL && STRCMP(fname, retval) == 0) {
- /* we search for a character that can be replaced by '_' */
- while (--s >= ptr) {
- if (*s != '_') {
- *s = '_';
- break;
- }
- }
- if (s < ptr) /* fname was "________.<ext>", how tricky! */
- *ptr = 'v';
- }
- return retval;
-}
-
-/*
- * Like fgets(), but if the file line is too long, it is truncated and the
- * rest of the line is thrown away. Returns TRUE for end-of-file.
- */
-int vim_fgets(char_u *buf, int size, FILE *fp)
-{
- char *eof;
-#define FGETS_SIZE 200
- char tbuf[FGETS_SIZE];
-
- buf[size - 2] = NUL;
-#ifdef USE_CR
- eof = fgets_cr((char *)buf, size, fp);
-#else
- eof = fgets((char *)buf, size, fp);
-#endif
- if (buf[size - 2] != NUL && buf[size - 2] != '\n') {
- buf[size - 1] = NUL; /* Truncate the line */
-
- /* Now throw away the rest of the line: */
- do {
- tbuf[FGETS_SIZE - 2] = NUL;
-#ifdef USE_CR
- ignoredp = fgets_cr((char *)tbuf, FGETS_SIZE, fp);
-#else
- ignoredp = fgets((char *)tbuf, FGETS_SIZE, fp);
-#endif
- } while (tbuf[FGETS_SIZE - 2] != NUL && tbuf[FGETS_SIZE - 2] != '\n');
- }
- return eof == NULL;
-}
-
-#if defined(USE_CR) || defined(PROTO)
-/*
- * Like vim_fgets(), but accept any line terminator: CR, CR-LF or LF.
- * Returns TRUE for end-of-file.
- * Only used for the Mac, because it's much slower than vim_fgets().
- */
-int tag_fgets(char_u *buf, int size, FILE *fp)
-{
- int i = 0;
- int c;
- int eof = FALSE;
-
- for (;; ) {
- c = fgetc(fp);
- if (c == EOF) {
- eof = TRUE;
- break;
- }
- if (c == '\r') {
- /* Always store a NL for end-of-line. */
- if (i < size - 1)
- buf[i++] = '\n';
- c = fgetc(fp);
- if (c != '\n') /* Macintosh format: single CR. */
- ungetc(c, fp);
- break;
- }
- if (i < size - 1)
- buf[i++] = c;
- if (c == '\n')
- break;
- }
- buf[i] = NUL;
- return eof;
-}
-#endif
-
-/*
- * os_rename() only works if both files are on the same file system, this
- * function will (attempts to?) copy the file across if rename fails -- webb
- * Return -1 for failure, 0 for success.
- */
-int vim_rename(char_u *from, char_u *to)
-{
- int fd_in;
- int fd_out;
- int n;
- char *errmsg = NULL;
- char *buffer;
- long perm;
-#ifdef HAVE_ACL
- vim_acl_T acl; /* ACL from original file */
-#endif
- bool use_tmp_file = false;
-
- /*
- * When the names are identical, there is nothing to do. When they refer
- * to the same file (ignoring case and slash/backslash differences) but
- * the file name differs we need to go through a temp file.
- */
- if (fnamecmp(from, to) == 0) {
- if (p_fic && STRCMP(path_tail(from), path_tail(to)) != 0)
- use_tmp_file = true;
- else
- return 0;
- }
-
- // Fail if the "from" file doesn't exist. Avoids that "to" is deleted.
- FileInfo from_info;
- if (!os_get_file_info((char *)from, &from_info)) {
- return -1;
- }
-
- // It's possible for the source and destination to be the same file.
- // This happens when "from" and "to" differ in case and are on a FAT32
- // filesystem. In that case go through a temp file name.
- FileInfo to_info;
- if (os_get_file_info((char *)to, &to_info)
- && os_file_info_id_equal(&from_info, &to_info)) {
- use_tmp_file = true;
- }
-
- if (use_tmp_file) {
- char_u tempname[MAXPATHL + 1];
-
- /*
- * Find a name that doesn't exist and is in the same directory.
- * Rename "from" to "tempname" and then rename "tempname" to "to".
- */
- if (STRLEN(from) >= MAXPATHL - 5)
- return -1;
- STRCPY(tempname, from);
- for (n = 123; n < 99999; ++n) {
- sprintf((char *)path_tail(tempname), "%d", n);
- if (!os_file_exists(tempname)) {
- if (os_rename(from, tempname) == OK) {
- if (os_rename(tempname, to) == OK)
- return 0;
- /* Strange, the second step failed. Try moving the
- * file back and return failure. */
- os_rename(tempname, from);
- return -1;
- }
- /* If it fails for one temp name it will most likely fail
- * for any temp name, give up. */
- return -1;
- }
- }
- return -1;
- }
-
- /*
- * Delete the "to" file, this is required on some systems to make the
- * os_rename() work, on other systems it makes sure that we don't have
- * two files when the os_rename() fails.
- */
-
- os_remove((char *)to);
-
- /*
- * First try a normal rename, return if it works.
- */
- if (os_rename(from, to) == OK)
- return 0;
-
- /*
- * Rename() failed, try copying the file.
- */
- perm = os_getperm(from);
-#ifdef HAVE_ACL
- /* For systems that support ACL: get the ACL from the original file. */
- acl = mch_get_acl(from);
-#endif
- fd_in = mch_open((char *)from, O_RDONLY, 0);
- if (fd_in == -1) {
-#ifdef HAVE_ACL
- mch_free_acl(acl);
-#endif
- return -1;
- }
-
- /* Create the new file with same permissions as the original. */
- fd_out = mch_open((char *)to,
- O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW, (int)perm);
- if (fd_out == -1) {
- close(fd_in);
-#ifdef HAVE_ACL
- mch_free_acl(acl);
-#endif
- return -1;
- }
-
- // Avoid xmalloc() here as vim_rename() is called by buf_write() when neovim
- // is `preserve_exit()`ing.
- buffer = try_malloc(BUFSIZE);
- if (buffer == NULL) {
- close(fd_out);
- close(fd_in);
-#ifdef HAVE_ACL
- mch_free_acl(acl);
-#endif
- return -1;
- }
-
- while ((n = read_eintr(fd_in, buffer, BUFSIZE)) > 0)
- if (write_eintr(fd_out, buffer, n) != n) {
- errmsg = _("E208: Error writing to \"%s\"");
- break;
- }
-
- free(buffer);
- close(fd_in);
- if (close(fd_out) < 0)
- errmsg = _("E209: Error closing \"%s\"");
- if (n < 0) {
- errmsg = _("E210: Error reading \"%s\"");
- to = from;
- }
-#ifndef UNIX /* for Unix mch_open() already set the permission */
- os_setperm(to, perm);
-#endif
-#ifdef HAVE_ACL
- mch_set_acl(to, acl);
- mch_free_acl(acl);
-#endif
-#ifdef HAVE_SELINUX
- mch_copy_sec(from, to);
-#endif
- if (errmsg != NULL) {
- EMSG2(errmsg, to);
- return -1;
- }
- os_remove((char *)from);
- return 0;
-}
-
-static int already_warned = FALSE;
-
-/*
- * Check if any not hidden buffer has been changed.
- * Postpone the check if there are characters in the stuff buffer, a global
- * command is being executed, a mapping is being executed or an autocommand is
- * busy.
- * Returns TRUE if some message was written (screen should be redrawn and
- * cursor positioned).
- */
-int
-check_timestamps (
- int focus /* called for GUI focus event */
-)
-{
- buf_T *buf;
- int didit = 0;
- int n;
-
- /* Don't check timestamps while system() or another low-level function may
- * cause us to lose and gain focus. */
- if (no_check_timestamps > 0)
- return FALSE;
-
- /* Avoid doing a check twice. The OK/Reload dialog can cause a focus
- * event and we would keep on checking if the file is steadily growing.
- * Do check again after typing something. */
- if (focus && did_check_timestamps) {
- need_check_timestamps = TRUE;
- return FALSE;
- }
-
- if (!stuff_empty() || global_busy || !typebuf_typed()
- || autocmd_busy || curbuf_lock > 0 || allbuf_lock > 0
- )
- need_check_timestamps = TRUE; /* check later */
- else {
- ++no_wait_return;
- did_check_timestamps = TRUE;
- already_warned = FALSE;
- for (buf = firstbuf; buf != NULL; ) {
- /* Only check buffers in a window. */
- if (buf->b_nwindows > 0) {
- n = buf_check_timestamp(buf, focus);
- if (didit < n)
- didit = n;
- if (n > 0 && !buf_valid(buf)) {
- /* Autocommands have removed the buffer, start at the
- * first one again. */
- buf = firstbuf;
- continue;
- }
- }
- buf = buf->b_next;
- }
- --no_wait_return;
- need_check_timestamps = FALSE;
- if (need_wait_return && didit == 2) {
- /* make sure msg isn't overwritten */
- msg_puts((char_u *)"\n");
- out_flush();
- }
- }
- return didit;
-}
-
-/*
- * Move all the lines from buffer "frombuf" to buffer "tobuf".
- * Return OK or FAIL. When FAIL "tobuf" is incomplete and/or "frombuf" is not
- * empty.
- */
-static int move_lines(buf_T *frombuf, buf_T *tobuf)
-{
- buf_T *tbuf = curbuf;
- int retval = OK;
- linenr_T lnum;
- char_u *p;
-
- /* Copy the lines in "frombuf" to "tobuf". */
- curbuf = tobuf;
- for (lnum = 1; lnum <= frombuf->b_ml.ml_line_count; ++lnum) {
- p = vim_strsave(ml_get_buf(frombuf, lnum, FALSE));
- if (p == NULL || ml_append(lnum - 1, p, 0, FALSE) == FAIL) {
- free(p);
- retval = FAIL;
- break;
- }
- free(p);
- }
-
- /* Delete all the lines in "frombuf". */
- if (retval != FAIL) {
- curbuf = frombuf;
- for (lnum = curbuf->b_ml.ml_line_count; lnum > 0; --lnum)
- if (ml_delete(lnum, FALSE) == FAIL) {
- /* Oops! We could try putting back the saved lines, but that
- * might fail again... */
- retval = FAIL;
- break;
- }
- }
-
- curbuf = tbuf;
- return retval;
-}
-
-/*
- * Check if buffer "buf" has been changed.
- * Also check if the file for a new buffer unexpectedly appeared.
- * return 1 if a changed buffer was found.
- * return 2 if a message has been displayed.
- * return 0 otherwise.
- */
-int
-buf_check_timestamp (
- buf_T *buf,
- int focus /* called for GUI focus event */
-)
-{
- int retval = 0;
- char_u *path;
- char_u *tbuf;
- char *mesg = NULL;
- char *mesg2 = "";
- int helpmesg = FALSE;
- int reload = FALSE;
- int can_reload = FALSE;
- off_t orig_size = buf->b_orig_size;
- int orig_mode = buf->b_orig_mode;
- static int busy = FALSE;
- int n;
- char_u *s;
- char *reason;
-
- /* If there is no file name, the buffer is not loaded, 'buftype' is
- * set, we are in the middle of a save or being called recursively: ignore
- * this buffer. */
- if (buf->b_ffname == NULL
- || buf->b_ml.ml_mfp == NULL
- || *buf->b_p_bt != NUL
- || buf->b_saving
- || busy
- )
- return 0;
-
- FileInfo file_info;
- bool file_info_ok;
- if (!(buf->b_flags & BF_NOTEDITED)
- && buf->b_mtime != 0
- && (!(file_info_ok = os_get_file_info((char *)buf->b_ffname, &file_info))
- || time_differs((long)file_info.stat.st_mtim.tv_sec, buf->b_mtime)
- || (int)file_info.stat.st_mode != buf->b_orig_mode
- )) {
- retval = 1;
-
- /* set b_mtime to stop further warnings (e.g., when executing
- * FileChangedShell autocmd) */
- if (!file_info_ok) {
- buf->b_mtime = 0;
- buf->b_orig_size = 0;
- buf->b_orig_mode = 0;
- } else {
- buf_store_file_info(buf, &file_info);
- }
-
- /* Don't do anything for a directory. Might contain the file
- * explorer. */
- if (os_isdir(buf->b_fname))
- ;
-
- /*
- * If 'autoread' is set, the buffer has no changes and the file still
- * exists, reload the buffer. Use the buffer-local option value if it
- * was set, the global option value otherwise.
- */
- else if ((buf->b_p_ar >= 0 ? buf->b_p_ar : p_ar)
- && !bufIsChanged(buf) && file_info_ok)
- reload = TRUE;
- else {
- if (!file_info_ok)
- reason = "deleted";
- else if (bufIsChanged(buf))
- reason = "conflict";
- else if (orig_size != buf->b_orig_size || buf_contents_changed(buf))
- reason = "changed";
- else if (orig_mode != buf->b_orig_mode)
- reason = "mode";
- else
- reason = "time";
-
- /*
- * Only give the warning if there are no FileChangedShell
- * autocommands.
- * Avoid being called recursively by setting "busy".
- */
- busy = TRUE;
- set_vim_var_string(VV_FCS_REASON, (char_u *)reason, -1);
- set_vim_var_string(VV_FCS_CHOICE, (char_u *)"", -1);
- ++allbuf_lock;
- n = apply_autocmds(EVENT_FILECHANGEDSHELL,
- buf->b_fname, buf->b_fname, FALSE, buf);
- --allbuf_lock;
- busy = FALSE;
- if (n) {
- if (!buf_valid(buf))
- EMSG(_("E246: FileChangedShell autocommand deleted buffer"));
- s = get_vim_var_str(VV_FCS_CHOICE);
- if (STRCMP(s, "reload") == 0 && *reason != 'd')
- reload = TRUE;
- else if (STRCMP(s, "ask") == 0)
- n = FALSE;
- else
- return 2;
- }
- if (!n) {
- if (*reason == 'd')
- mesg = _("E211: File \"%s\" no longer available");
- else {
- helpmesg = TRUE;
- can_reload = TRUE;
- /*
- * Check if the file contents really changed to avoid
- * giving a warning when only the timestamp was set (e.g.,
- * checked out of CVS). Always warn when the buffer was
- * changed.
- */
- if (reason[2] == 'n') {
- mesg = _(
- "W12: Warning: File \"%s\" has changed and the buffer was changed in Vim as well");
- mesg2 = _("See \":help W12\" for more info.");
- } else if (reason[1] == 'h') {
- mesg = _(
- "W11: Warning: File \"%s\" has changed since editing started");
- mesg2 = _("See \":help W11\" for more info.");
- } else if (*reason == 'm') {
- mesg = _(
- "W16: Warning: Mode of file \"%s\" has changed since editing started");
- mesg2 = _("See \":help W16\" for more info.");
- } else
- /* Only timestamp changed, store it to avoid a warning
- * in check_mtime() later. */
- buf->b_mtime_read = buf->b_mtime;
- }
- }
- }
-
- } else if ((buf->b_flags & BF_NEW) && !(buf->b_flags & BF_NEW_W)
- && os_file_exists(buf->b_ffname)) {
- retval = 1;
- mesg = _("W13: Warning: File \"%s\" has been created after editing started");
- buf->b_flags |= BF_NEW_W;
- can_reload = TRUE;
- }
-
- if (mesg != NULL) {
- path = home_replace_save(buf, buf->b_fname);
- if (path != NULL) {
- if (!helpmesg)
- mesg2 = "";
- tbuf = alloc((unsigned)(STRLEN(path) + STRLEN(mesg)
- + STRLEN(mesg2) + 2));
- sprintf((char *)tbuf, mesg, path);
- /* Set warningmsg here, before the unimportant and output-specific
- * mesg2 has been appended. */
- set_vim_var_string(VV_WARNINGMSG, tbuf, -1);
- if (can_reload) {
- if (*mesg2 != NUL) {
- STRCAT(tbuf, "\n");
- STRCAT(tbuf, mesg2);
- }
- if (do_dialog(VIM_WARNING, (char_u *)_("Warning"), tbuf,
- (char_u *)_("&OK\n&Load File"), 1, NULL, TRUE) == 2)
- reload = TRUE;
- } else if (State > NORMAL_BUSY || (State & CMDLINE) ||
- already_warned) {
- if (*mesg2 != NUL) {
- STRCAT(tbuf, "; ");
- STRCAT(tbuf, mesg2);
- }
- EMSG(tbuf);
- retval = 2;
- } else {
- if (!autocmd_busy) {
- msg_start();
- msg_puts_attr(tbuf, hl_attr(HLF_E) + MSG_HIST);
- if (*mesg2 != NUL)
- msg_puts_attr((char_u *)mesg2,
- hl_attr(HLF_W) + MSG_HIST);
- msg_clr_eos();
- (void)msg_end();
- if (emsg_silent == 0) {
- out_flush();
- /* give the user some time to think about it */
- ui_delay(1000L, TRUE);
-
- /* don't redraw and erase the message */
- redraw_cmdline = FALSE;
- }
- }
- already_warned = TRUE;
- }
-
- free(path);
- free(tbuf);
- }
- }
-
- if (reload) {
- /* Reload the buffer. */
- buf_reload(buf, orig_mode);
- if (buf->b_p_udf && buf->b_ffname != NULL) {
- char_u hash[UNDO_HASH_SIZE];
- buf_T *save_curbuf = curbuf;
-
- /* Any existing undo file is unusable, write it now. */
- curbuf = buf;
- u_compute_hash(hash);
- u_write_undo(NULL, FALSE, buf, hash);
- curbuf = save_curbuf;
- }
- }
-
- /* Trigger FileChangedShell when the file was changed in any way. */
- if (buf_valid(buf) && retval != 0)
- (void)apply_autocmds(EVENT_FILECHANGEDSHELLPOST,
- buf->b_fname, buf->b_fname, FALSE, buf);
-
- return retval;
-}
-
-/*
- * Reload a buffer that is already loaded.
- * Used when the file was changed outside of Vim.
- * "orig_mode" is buf->b_orig_mode before the need for reloading was detected.
- * buf->b_orig_mode may have been reset already.
- */
-void buf_reload(buf_T *buf, int orig_mode)
-{
- exarg_T ea;
- pos_T old_cursor;
- linenr_T old_topline;
- int old_ro = buf->b_p_ro;
- buf_T *savebuf;
- int saved = OK;
- aco_save_T aco;
- int flags = READ_NEW;
-
- /* set curwin/curbuf for "buf" and save some things */
- aucmd_prepbuf(&aco, buf);
-
- // We only want to read the text from the file, not reset the syntax
- // highlighting, clear marks, diff status, etc. Force the fileformat and
- // encoding to be the same.
-
- prep_exarg(&ea, buf);
- old_cursor = curwin->w_cursor;
- old_topline = curwin->w_topline;
-
- if (p_ur < 0 || curbuf->b_ml.ml_line_count <= p_ur) {
- /* Save all the text, so that the reload can be undone.
- * Sync first so that this is a separate undo-able action. */
- u_sync(FALSE);
- saved = u_savecommon(0, curbuf->b_ml.ml_line_count + 1, 0, TRUE);
- flags |= READ_KEEP_UNDO;
- }
-
- /*
- * To behave like when a new file is edited (matters for
- * BufReadPost autocommands) we first need to delete the current
- * buffer contents. But if reading the file fails we should keep
- * the old contents. Can't use memory only, the file might be
- * too big. Use a hidden buffer to move the buffer contents to.
- */
- if (bufempty() || saved == FAIL)
- savebuf = NULL;
- else {
- /* Allocate a buffer without putting it in the buffer list. */
- savebuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
- if (savebuf != NULL && buf == curbuf) {
- /* Open the memline. */
- curbuf = savebuf;
- curwin->w_buffer = savebuf;
- saved = ml_open(curbuf);
- curbuf = buf;
- curwin->w_buffer = buf;
- }
- if (savebuf == NULL || saved == FAIL || buf != curbuf
- || move_lines(buf, savebuf) == FAIL) {
- EMSG2(_("E462: Could not prepare for reloading \"%s\""),
- buf->b_fname);
- saved = FAIL;
- }
- }
-
- if (saved == OK) {
- curbuf->b_flags |= BF_CHECK_RO; /* check for RO again */
- keep_filetype = TRUE; /* don't detect 'filetype' */
- if (readfile(buf->b_ffname, buf->b_fname, (linenr_T)0,
- (linenr_T)0,
- (linenr_T)MAXLNUM, &ea, flags) == FAIL) {
- if (!aborting())
- EMSG2(_("E321: Could not reload \"%s\""), buf->b_fname);
- if (savebuf != NULL && buf_valid(savebuf) && buf == curbuf) {
- /* Put the text back from the save buffer. First
- * delete any lines that readfile() added. */
- while (!bufempty())
- if (ml_delete(buf->b_ml.ml_line_count, FALSE) == FAIL)
- break;
- (void)move_lines(savebuf, buf);
- }
- } else if (buf == curbuf) { /* "buf" still valid */
- /* Mark the buffer as unmodified and free undo info. */
- unchanged(buf, TRUE);
- if ((flags & READ_KEEP_UNDO) == 0) {
- u_blockfree(buf);
- u_clearall(buf);
- } else {
- /* Mark all undo states as changed. */
- u_unchanged(curbuf);
- }
- }
- }
- free(ea.cmd);
-
- if (savebuf != NULL && buf_valid(savebuf))
- wipe_buffer(savebuf, FALSE);
-
- /* Invalidate diff info if necessary. */
- diff_invalidate(curbuf);
-
- /* Restore the topline and cursor position and check it (lines may
- * have been removed). */
- if (old_topline > curbuf->b_ml.ml_line_count)
- curwin->w_topline = curbuf->b_ml.ml_line_count;
- else
- curwin->w_topline = old_topline;
- curwin->w_cursor = old_cursor;
- check_cursor();
- update_topline();
- keep_filetype = FALSE;
- {
- win_T *wp;
- tabpage_T *tp;
-
- /* Update folds unless they are defined manually. */
- FOR_ALL_TAB_WINDOWS(tp, wp)
- if (wp->w_buffer == curwin->w_buffer
- && !foldmethodIsManual(wp))
- foldUpdateAll(wp);
- }
- /* If the mode didn't change and 'readonly' was set, keep the old
- * value; the user probably used the ":view" command. But don't
- * reset it, might have had a read error. */
- if (orig_mode == curbuf->b_orig_mode)
- curbuf->b_p_ro |= old_ro;
-
- /* Modelines must override settings done by autocommands. */
- do_modelines(0);
-
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
- /* Careful: autocommands may have made "buf" invalid! */
-}
-
-void buf_store_file_info(buf_T *buf, FileInfo *file_info)
-{
- buf->b_mtime = (long)file_info->stat.st_mtim.tv_sec;
- buf->b_orig_size = file_info->stat.st_size;
- buf->b_orig_mode = (int)file_info->stat.st_mode;
-}
-
-/*
- * Adjust the line with missing eol, used for the next write.
- * Used for do_filter(), when the input lines for the filter are deleted.
- */
-void write_lnum_adjust(linenr_T offset)
-{
- if (curbuf->b_no_eol_lnum != 0) /* only if there is a missing eol */
- curbuf->b_no_eol_lnum += offset;
-}
-
-#if defined(TEMPDIRNAMES) || defined(PROTO)
-static long temp_count = 0; /* Temp filename counter. */
-
-/*
- * Delete the temp directory and all files it contains.
- */
-void vim_deltempdir(void)
-{
- char_u **files;
- int file_count;
- int i;
-
- if (vim_tempdir != NULL) {
- sprintf((char *)NameBuff, "%s*", vim_tempdir);
- if (gen_expand_wildcards(1, &NameBuff, &file_count, &files,
- EW_DIR|EW_FILE|EW_SILENT) == OK) {
- for (i = 0; i < file_count; ++i)
- os_remove((char *)files[i]);
- FreeWild(file_count, files);
- }
- path_tail(NameBuff)[-1] = NUL;
- os_rmdir((char *)NameBuff);
-
- free(vim_tempdir);
- vim_tempdir = NULL;
- }
-}
-
-#endif
-
-#ifdef TEMPDIRNAMES
-/*
- * Directory "tempdir" was created. Expand this name to a full path and put
- * it in "vim_tempdir". This avoids that using ":cd" would confuse us.
- * "tempdir" must be no longer than MAXPATHL.
- */
-static void vim_settempdir(char_u *tempdir)
-{
- char_u *buf = verbose_try_malloc((size_t)MAXPATHL + 2);
- if (buf) {
- if (vim_FullName(tempdir, buf, MAXPATHL, FALSE) == FAIL)
- STRCPY(buf, tempdir);
- add_pathsep(buf);
- vim_tempdir = vim_strsave(buf);
- free(buf);
- }
-}
-#endif
-
-/*
- * vim_tempname(): Return a unique name that can be used for a temp file.
- *
- * The temp file is NOT created.
- *
- * The returned pointer is to allocated memory.
- * The returned pointer is NULL if no valid name was found.
- */
-char_u *
-vim_tempname (
- int extra_char /* char to use in the name instead of '?' */
-)
-{
-#ifdef USE_TMPNAM
- char_u itmp[L_tmpnam]; /* use tmpnam() */
-#else
- char_u itmp[TEMPNAMELEN];
-#endif
-
-#ifdef TEMPDIRNAMES
- static char *(tempdirs[]) = {TEMPDIRNAMES};
- int i;
-
- /*
- * This will create a directory for private use by this instance of Vim.
- * This is done once, and the same directory is used for all temp files.
- * This method avoids security problems because of symlink attacks et al.
- * It's also a bit faster, because we only need to check for an existing
- * file when creating the directory and not for each temp file.
- */
- if (vim_tempdir == NULL) {
- /*
- * Try the entries in TEMPDIRNAMES to create the temp directory.
- */
- for (i = 0; i < (int)(sizeof(tempdirs) / sizeof(char *)); ++i) {
-# ifndef HAVE_MKDTEMP
- size_t itmplen;
- long nr;
- long off;
-# endif
-
- /* expand $TMP, leave room for "/v1100000/999999999" */
- expand_env((char_u *)tempdirs[i], itmp, TEMPNAMELEN - 20);
- if (os_isdir(itmp)) { /* directory exists */
- add_pathsep(itmp);
-
-# ifdef HAVE_MKDTEMP
- /* Leave room for filename */
- STRCAT(itmp, "vXXXXXX");
- if (mkdtemp((char *)itmp) != NULL)
- vim_settempdir(itmp);
-# else
- /* Get an arbitrary number of up to 6 digits. When it's
- * unlikely that it already exists it will be faster,
- * otherwise it doesn't matter. The use of mkdir() avoids any
- * security problems because of the predictable number. */
- nr = (os_get_pid() + (long)time(NULL)) % 1000000L;
- itmplen = STRLEN(itmp);
-
- /* Try up to 10000 different values until we find a name that
- * doesn't exist. */
- for (off = 0; off < 10000L; ++off) {
- int r;
-# if defined(UNIX)
- mode_t umask_save;
-# endif
-
- sprintf((char *)itmp + itmplen, "v%" PRId64, (int64_t)(nr + off));
-# ifndef EEXIST
- /* If mkdir() does not set errno to EEXIST, check for
- * existing file here. There is a race condition then,
- * although it's fail-safe. */
- if (os_file_exists(itmp))
- continue;
-# endif
-# if defined(UNIX)
- /* Make sure the umask doesn't remove the executable bit.
- * "repl" has been reported to use "177". */
- umask_save = umask(077);
-# endif
- r = os_mkdir((char *)itmp, 0700);
-# if defined(UNIX)
- (void)umask(umask_save);
-# endif
- if (r == 0) {
- vim_settempdir(itmp);
- break;
- }
-# ifdef EEXIST
- /* If the mkdir() didn't fail because the file/dir exists,
- * we probably can't create any dir here, try another
- * place. */
- if (errno != EEXIST)
-# endif
- break;
- }
-# endif /* HAVE_MKDTEMP */
- if (vim_tempdir != NULL)
- break;
- }
- }
- }
-
- if (vim_tempdir != NULL) {
- /* There is no need to check if the file exists, because we own the
- * directory and nobody else creates a file in it. */
- sprintf((char *)itmp, "%s%" PRId64, vim_tempdir, (int64_t)temp_count++);
- return vim_strsave(itmp);
- }
-
- return NULL;
-
-#else /* TEMPDIRNAMES */
-
-
-# ifdef USE_TMPNAM
- char_u *p;
-
- /* tmpnam() will make its own name */
- p = tmpnam((char *)itmp);
- if (p == NULL || *p == NUL)
- return NULL;
-# else
- char_u *p;
-
- STRCPY(itmp, TEMPNAME);
- if ((p = vim_strchr(itmp, '?')) != NULL)
- *p = extra_char;
- if (mktemp((char *)itmp) == NULL)
- return NULL;
-# endif
-
- return vim_strsave(itmp);
-#endif /* TEMPDIRNAMES */
-}
-
-#if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
-/*
- * Convert all backslashes in fname to forward slashes in-place.
- */
-void forward_slash(char_u *fname)
-{
- char_u *p;
-
- for (p = fname; *p != NUL; ++p)
- /* The Big5 encoding can have '\' in the trail byte. */
- if (enc_dbcs != 0 && (*mb_ptr2len)(p) > 1)
- ++p;
- else if (*p == '\\')
- *p = '/';
-}
-#endif
-
-
-/*
- * Code for automatic commands.
- *
- * Only included when "FEAT_AUTOCMD" has been defined.
- */
-
-
-/*
- * The autocommands are stored in a list for each event.
- * Autocommands for the same pattern, that are consecutive, are joined
- * together, to avoid having to match the pattern too often.
- * The result is an array of Autopat lists, which point to AutoCmd lists:
- *
- * first_autopat[0] --> Autopat.next --> Autopat.next --> NULL
- * Autopat.cmds Autopat.cmds
- * | |
- * V V
- * AutoCmd.next AutoCmd.next
- * | |
- * V V
- * AutoCmd.next NULL
- * |
- * V
- * NULL
- *
- * first_autopat[1] --> Autopat.next --> NULL
- * Autopat.cmds
- * |
- * V
- * AutoCmd.next
- * |
- * V
- * NULL
- * etc.
- *
- * The order of AutoCmds is important, this is the order in which they were
- * defined and will have to be executed.
- */
-typedef struct AutoCmd {
- char_u *cmd; /* The command to be executed (NULL
- when command has been removed) */
- char nested; /* If autocommands nest here */
- char last; /* last command in list */
- scid_T scriptID; /* script ID where defined */
- struct AutoCmd *next; /* Next AutoCmd in list */
-} AutoCmd;
-
-typedef struct AutoPat {
- char_u *pat; /* pattern as typed (NULL when pattern
- has been removed) */
- regprog_T *reg_prog; /* compiled regprog for pattern */
- AutoCmd *cmds; /* list of commands to do */
- struct AutoPat *next; /* next AutoPat in AutoPat list */
- int group; /* group ID */
- int patlen; /* strlen() of pat */
- int buflocal_nr; /* !=0 for buffer-local AutoPat */
- char allow_dirs; /* Pattern may match whole path */
- char last; /* last pattern for apply_autocmds() */
-} AutoPat;
-
-static struct event_name {
- char *name; /* event name */
- event_T event; /* event number */
-} event_names[] =
-{
- {"BufAdd", EVENT_BUFADD},
- {"BufCreate", EVENT_BUFADD},
- {"BufDelete", EVENT_BUFDELETE},
- {"BufEnter", EVENT_BUFENTER},
- {"BufFilePost", EVENT_BUFFILEPOST},
- {"BufFilePre", EVENT_BUFFILEPRE},
- {"BufHidden", EVENT_BUFHIDDEN},
- {"BufLeave", EVENT_BUFLEAVE},
- {"BufNew", EVENT_BUFNEW},
- {"BufNewFile", EVENT_BUFNEWFILE},
- {"BufRead", EVENT_BUFREADPOST},
- {"BufReadCmd", EVENT_BUFREADCMD},
- {"BufReadPost", EVENT_BUFREADPOST},
- {"BufReadPre", EVENT_BUFREADPRE},
- {"BufUnload", EVENT_BUFUNLOAD},
- {"BufWinEnter", EVENT_BUFWINENTER},
- {"BufWinLeave", EVENT_BUFWINLEAVE},
- {"BufWipeout", EVENT_BUFWIPEOUT},
- {"BufWrite", EVENT_BUFWRITEPRE},
- {"BufWritePost", EVENT_BUFWRITEPOST},
- {"BufWritePre", EVENT_BUFWRITEPRE},
- {"BufWriteCmd", EVENT_BUFWRITECMD},
- {"CmdwinEnter", EVENT_CMDWINENTER},
- {"CmdwinLeave", EVENT_CMDWINLEAVE},
- {"ColorScheme", EVENT_COLORSCHEME},
- {"CompleteDone", EVENT_COMPLETEDONE},
- {"CursorHold", EVENT_CURSORHOLD},
- {"CursorHoldI", EVENT_CURSORHOLDI},
- {"CursorMoved", EVENT_CURSORMOVED},
- {"CursorMovedI", EVENT_CURSORMOVEDI},
- {"EncodingChanged", EVENT_ENCODINGCHANGED},
- {"FileEncoding", EVENT_ENCODINGCHANGED},
- {"FileAppendPost", EVENT_FILEAPPENDPOST},
- {"FileAppendPre", EVENT_FILEAPPENDPRE},
- {"FileAppendCmd", EVENT_FILEAPPENDCMD},
- {"FileChangedShell",EVENT_FILECHANGEDSHELL},
- {"FileChangedShellPost",EVENT_FILECHANGEDSHELLPOST},
- {"FileChangedRO", EVENT_FILECHANGEDRO},
- {"FileReadPost", EVENT_FILEREADPOST},
- {"FileReadPre", EVENT_FILEREADPRE},
- {"FileReadCmd", EVENT_FILEREADCMD},
- {"FileType", EVENT_FILETYPE},
- {"FileWritePost", EVENT_FILEWRITEPOST},
- {"FileWritePre", EVENT_FILEWRITEPRE},
- {"FileWriteCmd", EVENT_FILEWRITECMD},
- {"FilterReadPost", EVENT_FILTERREADPOST},
- {"FilterReadPre", EVENT_FILTERREADPRE},
- {"FilterWritePost", EVENT_FILTERWRITEPOST},
- {"FilterWritePre", EVENT_FILTERWRITEPRE},
- {"FocusGained", EVENT_FOCUSGAINED},
- {"FocusLost", EVENT_FOCUSLOST},
- {"FuncUndefined", EVENT_FUNCUNDEFINED},
- {"GUIEnter", EVENT_GUIENTER},
- {"GUIFailed", EVENT_GUIFAILED},
- {"InsertChange", EVENT_INSERTCHANGE},
- {"InsertEnter", EVENT_INSERTENTER},
- {"InsertLeave", EVENT_INSERTLEAVE},
- {"InsertCharPre", EVENT_INSERTCHARPRE},
- {"JobActivity", EVENT_JOBACTIVITY},
- {"MenuPopup", EVENT_MENUPOPUP},
- {"QuickFixCmdPost", EVENT_QUICKFIXCMDPOST},
- {"QuickFixCmdPre", EVENT_QUICKFIXCMDPRE},
- {"QuitPre", EVENT_QUITPRE},
- {"RemoteReply", EVENT_REMOTEREPLY},
- {"SessionLoadPost", EVENT_SESSIONLOADPOST},
- {"ShellCmdPost", EVENT_SHELLCMDPOST},
- {"ShellFilterPost", EVENT_SHELLFILTERPOST},
- {"SourcePre", EVENT_SOURCEPRE},
- {"SourceCmd", EVENT_SOURCECMD},
- {"SpellFileMissing",EVENT_SPELLFILEMISSING},
- {"StdinReadPost", EVENT_STDINREADPOST},
- {"StdinReadPre", EVENT_STDINREADPRE},
- {"SwapExists", EVENT_SWAPEXISTS},
- {"Syntax", EVENT_SYNTAX},
- {"TabEnter", EVENT_TABENTER},
- {"TabLeave", EVENT_TABLEAVE},
- {"TermChanged", EVENT_TERMCHANGED},
- {"TermResponse", EVENT_TERMRESPONSE},
- {"TextChanged", EVENT_TEXTCHANGED},
- {"TextChangedI", EVENT_TEXTCHANGEDI},
- {"User", EVENT_USER},
- {"VimEnter", EVENT_VIMENTER},
- {"VimLeave", EVENT_VIMLEAVE},
- {"VimLeavePre", EVENT_VIMLEAVEPRE},
- {"WinEnter", EVENT_WINENTER},
- {"WinLeave", EVENT_WINLEAVE},
- {"VimResized", EVENT_VIMRESIZED},
- {NULL, (event_T)0}
-};
-
-static AutoPat *first_autopat[NUM_EVENTS] =
-{
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-
-/*
- * struct used to keep status while executing autocommands for an event.
- */
-typedef struct AutoPatCmd {
- AutoPat *curpat; /* next AutoPat to examine */
- AutoCmd *nextcmd; /* next AutoCmd to execute */
- int group; /* group being used */
- char_u *fname; /* fname to match with */
- char_u *sfname; /* sfname to match with */
- char_u *tail; /* tail of fname */
- event_T event; /* current event */
- int arg_bufnr; /* initially equal to <abuf>, set to zero when
- buf is deleted */
- struct AutoPatCmd *next; /* chain of active apc-s for auto-invalidation*/
-} AutoPatCmd;
-
-static AutoPatCmd *active_apc_list = NULL; /* stack of active autocommands */
-
-/*
- * augroups stores a list of autocmd group names.
- */
-static garray_T augroups = {0, 0, sizeof(char_u *), 10, NULL};
-#define AUGROUP_NAME(i) (((char_u **)augroups.ga_data)[i])
-
-/*
- * The ID of the current group. Group 0 is the default one.
- */
-static int current_augroup = AUGROUP_DEFAULT;
-
-static int au_need_clean = FALSE; /* need to delete marked patterns */
-
-static void show_autocmd(AutoPat *ap, event_T event);
-static void au_remove_pat(AutoPat *ap);
-static void au_remove_cmds(AutoPat *ap);
-static void au_cleanup(void);
-static int au_new_group(char_u *name);
-static void au_del_group(char_u *name);
-static event_T event_name2nr(char_u *start, char_u **end);
-static char_u *event_nr2name(event_T event);
-static char_u *find_end_event(char_u *arg, int have_group);
-static int event_ignored(event_T event);
-static int au_get_grouparg(char_u **argp);
-static int do_autocmd_event(event_T event, char_u *pat, int nested,
- char_u *cmd, int forceit,
- int group);
-static int apply_autocmds_group(event_T event, char_u *fname, char_u *fname_io,
- int force, int group, buf_T *buf,
- exarg_T *eap);
-static void auto_next_pat(AutoPatCmd *apc, int stop_at_last);
-
-
-static event_T last_event;
-static int last_group;
-static int autocmd_blocked = 0; /* block all autocmds */
-
-/*
- * Show the autocommands for one AutoPat.
- */
-static void show_autocmd(AutoPat *ap, event_T event)
-{
- AutoCmd *ac;
-
- /* Check for "got_int" (here and at various places below), which is set
- * when "q" has been hit for the "--more--" prompt */
- if (got_int)
- return;
- if (ap->pat == NULL) /* pattern has been removed */
- return;
-
- msg_putchar('\n');
- if (got_int)
- return;
- if (event != last_event || ap->group != last_group) {
- if (ap->group != AUGROUP_DEFAULT) {
- if (AUGROUP_NAME(ap->group) == NULL)
- msg_puts_attr((char_u *)_("--Deleted--"), hl_attr(HLF_E));
- else
- msg_puts_attr(AUGROUP_NAME(ap->group), hl_attr(HLF_T));
- msg_puts((char_u *)" ");
- }
- msg_puts_attr(event_nr2name(event), hl_attr(HLF_T));
- last_event = event;
- last_group = ap->group;
- msg_putchar('\n');
- if (got_int)
- return;
- }
- msg_col = 4;
- msg_outtrans(ap->pat);
-
- for (ac = ap->cmds; ac != NULL; ac = ac->next) {
- if (ac->cmd != NULL) { /* skip removed commands */
- if (msg_col >= 14)
- msg_putchar('\n');
- msg_col = 14;
- if (got_int)
- return;
- msg_outtrans(ac->cmd);
- if (p_verbose > 0)
- last_set_msg(ac->scriptID);
- if (got_int)
- return;
- if (ac->next != NULL) {
- msg_putchar('\n');
- if (got_int)
- return;
- }
- }
- }
-}
-
-/*
- * Mark an autocommand pattern for deletion.
- */
-static void au_remove_pat(AutoPat *ap)
-{
- free(ap->pat);
- ap->pat = NULL;
- ap->buflocal_nr = -1;
- au_need_clean = TRUE;
-}
-
-/*
- * Mark all commands for a pattern for deletion.
- */
-static void au_remove_cmds(AutoPat *ap)
-{
- AutoCmd *ac;
-
- for (ac = ap->cmds; ac != NULL; ac = ac->next) {
- free(ac->cmd);
- ac->cmd = NULL;
- }
- au_need_clean = TRUE;
-}
-
-/*
- * Cleanup autocommands and patterns that have been deleted.
- * This is only done when not executing autocommands.
- */
-static void au_cleanup(void)
-{
- AutoPat *ap, **prev_ap;
- AutoCmd *ac, **prev_ac;
- event_T event;
-
- if (autocmd_busy || !au_need_clean)
- return;
-
- /* loop over all events */
- for (event = (event_T)0; (int)event < (int)NUM_EVENTS;
- event = (event_T)((int)event + 1)) {
- /* loop over all autocommand patterns */
- prev_ap = &(first_autopat[(int)event]);
- for (ap = *prev_ap; ap != NULL; ap = *prev_ap) {
- /* loop over all commands for this pattern */
- prev_ac = &(ap->cmds);
- for (ac = *prev_ac; ac != NULL; ac = *prev_ac) {
- /* remove the command if the pattern is to be deleted or when
- * the command has been marked for deletion */
- if (ap->pat == NULL || ac->cmd == NULL) {
- *prev_ac = ac->next;
- free(ac->cmd);
- free(ac);
- } else
- prev_ac = &(ac->next);
- }
-
- /* remove the pattern if it has been marked for deletion */
- if (ap->pat == NULL) {
- *prev_ap = ap->next;
- vim_regfree(ap->reg_prog);
- free(ap);
- } else
- prev_ap = &(ap->next);
- }
- }
-
- au_need_clean = FALSE;
-}
-
-/*
- * Called when buffer is freed, to remove/invalidate related buffer-local
- * autocmds.
- */
-void aubuflocal_remove(buf_T *buf)
-{
- AutoPat *ap;
- event_T event;
- AutoPatCmd *apc;
-
- /* invalidate currently executing autocommands */
- for (apc = active_apc_list; apc; apc = apc->next)
- if (buf->b_fnum == apc->arg_bufnr)
- apc->arg_bufnr = 0;
-
- /* invalidate buflocals looping through events */
- for (event = (event_T)0; (int)event < (int)NUM_EVENTS;
- event = (event_T)((int)event + 1))
- /* loop over all autocommand patterns */
- for (ap = first_autopat[(int)event]; ap != NULL; ap = ap->next)
- if (ap->buflocal_nr == buf->b_fnum) {
- au_remove_pat(ap);
- if (p_verbose >= 6) {
- verbose_enter();
- smsg((char_u *)
- _("auto-removing autocommand: %s <buffer=%d>"),
- event_nr2name(event), buf->b_fnum);
- verbose_leave();
- }
- }
- au_cleanup();
-}
-
-/*
- * Add an autocmd group name.
- * Return it's ID. Returns AUGROUP_ERROR (< 0) for error.
- */
-static int au_new_group(char_u *name)
-{
- int i;
-
- i = au_find_group(name);
- if (i == AUGROUP_ERROR) { /* the group doesn't exist yet, add it */
- /* First try using a free entry. */
- for (i = 0; i < augroups.ga_len; ++i)
- if (AUGROUP_NAME(i) == NULL)
- break;
- if (i == augroups.ga_len) {
- ga_grow(&augroups, 1);
- }
-
- AUGROUP_NAME(i) = vim_strsave(name);
- if (AUGROUP_NAME(i) == NULL)
- return AUGROUP_ERROR;
- if (i == augroups.ga_len)
- ++augroups.ga_len;
- }
-
- return i;
-}
-
-static void au_del_group(char_u *name)
-{
- int i;
-
- i = au_find_group(name);
- if (i == AUGROUP_ERROR) /* the group doesn't exist */
- EMSG2(_("E367: No such group: \"%s\""), name);
- else {
- free(AUGROUP_NAME(i));
- AUGROUP_NAME(i) = NULL;
- }
-}
-
-/*
- * Find the ID of an autocmd group name.
- * Return it's ID. Returns AUGROUP_ERROR (< 0) for error.
- */
-static int au_find_group(char_u *name)
-{
- int i;
-
- for (i = 0; i < augroups.ga_len; ++i)
- if (AUGROUP_NAME(i) != NULL && STRCMP(AUGROUP_NAME(i), name) == 0)
- return i;
- return AUGROUP_ERROR;
-}
-
-/*
- * Return TRUE if augroup "name" exists.
- */
-int au_has_group(char_u *name)
-{
- return au_find_group(name) != AUGROUP_ERROR;
-}
-
-/*
- * ":augroup {name}".
- */
-void do_augroup(char_u *arg, int del_group)
-{
- int i;
-
- if (del_group) {
- if (*arg == NUL)
- EMSG(_(e_argreq));
- else
- au_del_group(arg);
- } else if (STRICMP(arg, "end") == 0) /* ":aug end": back to group 0 */
- current_augroup = AUGROUP_DEFAULT;
- else if (*arg) { /* ":aug xxx": switch to group xxx */
- i = au_new_group(arg);
- if (i != AUGROUP_ERROR)
- current_augroup = i;
- } else { /* ":aug": list the group names */
- msg_start();
- for (i = 0; i < augroups.ga_len; ++i) {
- if (AUGROUP_NAME(i) != NULL) {
- msg_puts(AUGROUP_NAME(i));
- msg_puts((char_u *)" ");
- }
- }
- msg_clr_eos();
- msg_end();
- }
-}
-
-#if defined(EXITFREE) || defined(PROTO)
-void free_all_autocmds(void)
-{
- for (current_augroup = -1; current_augroup < augroups.ga_len;
- ++current_augroup)
- do_autocmd((char_u *)"", TRUE);
- ga_clear_strings(&augroups);
-}
-
-#endif
-
-/*
- * Return the event number for event name "start".
- * Return NUM_EVENTS if the event name was not found.
- * Return a pointer to the next event name in "end".
- */
-static event_T event_name2nr(char_u *start, char_u **end)
-{
- char_u *p;
- int i;
- int len;
-
- /* the event name ends with end of line, a blank or a comma */
- for (p = start; *p && !vim_iswhite(*p) && *p != ','; ++p)
- ;
- for (i = 0; event_names[i].name != NULL; ++i) {
- len = (int)STRLEN(event_names[i].name);
- if (len == p - start && STRNICMP(event_names[i].name, start, len) == 0)
- break;
- }
- if (*p == ',')
- ++p;
- *end = p;
- if (event_names[i].name == NULL)
- return NUM_EVENTS;
- return event_names[i].event;
-}
-
-/*
- * Return the name for event "event".
- */
-static char_u *event_nr2name(event_T event)
-{
- int i;
-
- for (i = 0; event_names[i].name != NULL; ++i)
- if (event_names[i].event == event)
- return (char_u *)event_names[i].name;
- return (char_u *)"Unknown";
-}
-
-/*
- * Scan over the events. "*" stands for all events.
- */
-static char_u *
-find_end_event (
- char_u *arg,
- int have_group /* TRUE when group name was found */
-)
-{
- char_u *pat;
- char_u *p;
-
- if (*arg == '*') {
- if (arg[1] && !vim_iswhite(arg[1])) {
- EMSG2(_("E215: Illegal character after *: %s"), arg);
- return NULL;
- }
- pat = arg + 1;
- } else {
- for (pat = arg; *pat && !vim_iswhite(*pat); pat = p) {
- if ((int)event_name2nr(pat, &p) >= (int)NUM_EVENTS) {
- if (have_group)
- EMSG2(_("E216: No such event: %s"), pat);
- else
- EMSG2(_("E216: No such group or event: %s"), pat);
- return NULL;
- }
- }
- }
- return pat;
-}
-
-/*
- * Return TRUE if "event" is included in 'eventignore'.
- */
-static int event_ignored(event_T event)
-{
- char_u *p = p_ei;
-
- while (*p != NUL) {
- if (STRNICMP(p, "all", 3) == 0 && (p[3] == NUL || p[3] == ','))
- return TRUE;
- if (event_name2nr(p, &p) == event)
- return TRUE;
- }
-
- return FALSE;
-}
-
-/*
- * Return OK when the contents of p_ei is valid, FAIL otherwise.
- */
-int check_ei(void)
-{
- char_u *p = p_ei;
-
- while (*p) {
- if (STRNICMP(p, "all", 3) == 0 && (p[3] == NUL || p[3] == ',')) {
- p += 3;
- if (*p == ',')
- ++p;
- } else if (event_name2nr(p, &p) == NUM_EVENTS)
- return FAIL;
- }
-
- return OK;
-}
-
-/*
- * Add "what" to 'eventignore' to skip loading syntax highlighting for every
- * buffer loaded into the window. "what" must start with a comma.
- * Returns the old value of 'eventignore' in allocated memory.
- */
-char_u *au_event_disable(char *what)
-{
- char_u *new_ei;
- char_u *save_ei;
-
- save_ei = vim_strsave(p_ei);
- if (save_ei != NULL) {
- new_ei = vim_strnsave(p_ei, (int)(STRLEN(p_ei) + STRLEN(what)));
- if (new_ei != NULL) {
- if (*what == ',' && *p_ei == NUL)
- STRCPY(new_ei, what + 1);
- else
- STRCAT(new_ei, what);
- set_string_option_direct((char_u *)"ei", -1, new_ei,
- OPT_FREE, SID_NONE);
- free(new_ei);
- }
- }
- return save_ei;
-}
-
-void au_event_restore(char_u *old_ei)
-{
- if (old_ei != NULL) {
- set_string_option_direct((char_u *)"ei", -1, old_ei,
- OPT_FREE, SID_NONE);
- free(old_ei);
- }
-}
-
-/*
- * do_autocmd() -- implements the :autocmd command. Can be used in the
- * following ways:
- *
- * :autocmd <event> <pat> <cmd> Add <cmd> to the list of commands that
- * will be automatically executed for <event>
- * when editing a file matching <pat>, in
- * the current group.
- * :autocmd <event> <pat> Show the auto-commands associated with
- * <event> and <pat>.
- * :autocmd <event> Show the auto-commands associated with
- * <event>.
- * :autocmd Show all auto-commands.
- * :autocmd! <event> <pat> <cmd> Remove all auto-commands associated with
- * <event> and <pat>, and add the command
- * <cmd>, for the current group.
- * :autocmd! <event> <pat> Remove all auto-commands associated with
- * <event> and <pat> for the current group.
- * :autocmd! <event> Remove all auto-commands associated with
- * <event> for the current group.
- * :autocmd! Remove ALL auto-commands for the current
- * group.
- *
- * Multiple events and patterns may be given separated by commas. Here are
- * some examples:
- * :autocmd bufread,bufenter *.c,*.h set tw=0 smartindent noic
- * :autocmd bufleave * set tw=79 nosmartindent ic infercase
- *
- * :autocmd * *.c show all autocommands for *.c files.
- *
- * Mostly a {group} argument can optionally appear before <event>.
- */
-void do_autocmd(char_u *arg, int forceit)
-{
- char_u *pat;
- char_u *envpat = NULL;
- char_u *cmd;
- event_T event;
- int need_free = FALSE;
- int nested = FALSE;
- int group;
-
- /*
- * Check for a legal group name. If not, use AUGROUP_ALL.
- */
- group = au_get_grouparg(&arg);
- if (arg == NULL) /* out of memory */
- return;
-
- /*
- * Scan over the events.
- * If we find an illegal name, return here, don't do anything.
- */
- pat = find_end_event(arg, group != AUGROUP_ALL);
- if (pat == NULL)
- return;
-
- /*
- * Scan over the pattern. Put a NUL at the end.
- */
- pat = skipwhite(pat);
- cmd = pat;
- while (*cmd && (!vim_iswhite(*cmd) || cmd[-1] == '\\'))
- cmd++;
- if (*cmd)
- *cmd++ = NUL;
-
- /* Expand environment variables in the pattern. Set 'shellslash', we want
- * forward slashes here. */
- if (vim_strchr(pat, '$') != NULL || vim_strchr(pat, '~') != NULL) {
-#ifdef BACKSLASH_IN_FILENAME
- int p_ssl_save = p_ssl;
-
- p_ssl = TRUE;
-#endif
- envpat = expand_env_save(pat);
-#ifdef BACKSLASH_IN_FILENAME
- p_ssl = p_ssl_save;
-#endif
- if (envpat != NULL)
- pat = envpat;
- }
-
- /*
- * Check for "nested" flag.
- */
- cmd = skipwhite(cmd);
- if (*cmd != NUL && STRNCMP(cmd, "nested", 6) == 0 && vim_iswhite(cmd[6])) {
- nested = TRUE;
- cmd = skipwhite(cmd + 6);
- }
-
- /*
- * Find the start of the commands.
- * Expand <sfile> in it.
- */
- if (*cmd != NUL) {
- cmd = expand_sfile(cmd);
- if (cmd == NULL) /* some error */
- return;
- need_free = TRUE;
- }
-
- /*
- * Print header when showing autocommands.
- */
- if (!forceit && *cmd == NUL) {
- /* Highlight title */
- MSG_PUTS_TITLE(_("\n--- Auto-Commands ---"));
- }
-
- /*
- * Loop over the events.
- */
- last_event = (event_T)-1; /* for listing the event name */
- last_group = AUGROUP_ERROR; /* for listing the group name */
- if (*arg == '*' || *arg == NUL) {
- for (event = (event_T)0; (int)event < (int)NUM_EVENTS;
- event = (event_T)((int)event + 1))
- if (do_autocmd_event(event, pat,
- nested, cmd, forceit, group) == FAIL)
- break;
- } else {
- while (*arg && !vim_iswhite(*arg))
- if (do_autocmd_event(event_name2nr(arg, &arg), pat,
- nested, cmd, forceit, group) == FAIL)
- break;
- }
-
- if (need_free)
- free(cmd);
- free(envpat);
-}
-
-/*
- * Find the group ID in a ":autocmd" or ":doautocmd" argument.
- * The "argp" argument is advanced to the following argument.
- *
- * Returns the group ID, AUGROUP_ERROR for error (out of memory).
- */
-static int au_get_grouparg(char_u **argp)
-{
- char_u *group_name;
- char_u *p;
- char_u *arg = *argp;
- int group = AUGROUP_ALL;
-
- p = skiptowhite(arg);
- if (p > arg) {
- group_name = vim_strnsave(arg, (int)(p - arg));
- if (group_name == NULL) /* out of memory */
- return AUGROUP_ERROR;
- group = au_find_group(group_name);
- if (group == AUGROUP_ERROR)
- group = AUGROUP_ALL; /* no match, use all groups */
- else
- *argp = skipwhite(p); /* match, skip over group name */
- free(group_name);
- }
- return group;
-}
-
-/*
- * do_autocmd() for one event.
- * If *pat == NUL do for all patterns.
- * If *cmd == NUL show entries.
- * If forceit == TRUE delete entries.
- * If group is not AUGROUP_ALL, only use this group.
- */
-static int do_autocmd_event(event_T event, char_u *pat, int nested, char_u *cmd, int forceit, int group)
-{
- AutoPat *ap;
- AutoPat **prev_ap;
- AutoCmd *ac;
- AutoCmd **prev_ac;
- int brace_level;
- char_u *endpat;
- int findgroup;
- int allgroups;
- int patlen;
- int is_buflocal;
- int buflocal_nr;
- char_u buflocal_pat[25]; /* for "<buffer=X>" */
-
- if (group == AUGROUP_ALL)
- findgroup = current_augroup;
- else
- findgroup = group;
- allgroups = (group == AUGROUP_ALL && !forceit && *cmd == NUL);
-
- /*
- * Show or delete all patterns for an event.
- */
- if (*pat == NUL) {
- for (ap = first_autopat[(int)event]; ap != NULL; ap = ap->next) {
- if (forceit) { /* delete the AutoPat, if it's in the current group */
- if (ap->group == findgroup)
- au_remove_pat(ap);
- } else if (group == AUGROUP_ALL || ap->group == group)
- show_autocmd(ap, event);
- }
- }
-
- /*
- * Loop through all the specified patterns.
- */
- for (; *pat; pat = (*endpat == ',' ? endpat + 1 : endpat)) {
- /*
- * Find end of the pattern.
- * Watch out for a comma in braces, like "*.\{obj,o\}".
- */
- brace_level = 0;
- for (endpat = pat; *endpat && (*endpat != ',' || brace_level
- || endpat[-1] == '\\'); ++endpat) {
- if (*endpat == '{')
- brace_level++;
- else if (*endpat == '}')
- brace_level--;
- }
- if (pat == endpat) /* ignore single comma */
- continue;
- patlen = (int)(endpat - pat);
-
- /*
- * detect special <buflocal[=X]> buffer-local patterns
- */
- is_buflocal = FALSE;
- buflocal_nr = 0;
-
- if (patlen >= 7 && STRNCMP(pat, "<buffer", 7) == 0
- && pat[patlen - 1] == '>') {
- /* Error will be printed only for addition. printing and removing
- * will proceed silently. */
- is_buflocal = TRUE;
- if (patlen == 8)
- buflocal_nr = curbuf->b_fnum;
- else if (patlen > 9 && pat[7] == '=') {
- /* <buffer=abuf> */
- if (patlen == 13 && STRNICMP(pat, "<buffer=abuf>", 13))
- buflocal_nr = autocmd_bufnr;
- /* <buffer=123> */
- else if (skipdigits(pat + 8) == pat + patlen - 1)
- buflocal_nr = atoi((char *)pat + 8);
- }
- }
-
- if (is_buflocal) {
- /* normalize pat into standard "<buffer>#N" form */
- sprintf((char *)buflocal_pat, "<buffer=%d>", buflocal_nr);
- pat = buflocal_pat; /* can modify pat and patlen */
- patlen = (int)STRLEN(buflocal_pat); /* but not endpat */
- }
-
- /*
- * Find AutoPat entries with this pattern.
- */
- prev_ap = &first_autopat[(int)event];
- while ((ap = *prev_ap) != NULL) {
- if (ap->pat != NULL) {
- /* Accept a pattern when:
- * - a group was specified and it's that group, or a group was
- * not specified and it's the current group, or a group was
- * not specified and we are listing
- * - the length of the pattern matches
- * - the pattern matches.
- * For <buffer[=X]>, this condition works because we normalize
- * all buffer-local patterns.
- */
- if ((allgroups || ap->group == findgroup)
- && ap->patlen == patlen
- && STRNCMP(pat, ap->pat, patlen) == 0) {
- /*
- * Remove existing autocommands.
- * If adding any new autocmd's for this AutoPat, don't
- * delete the pattern from the autopat list, append to
- * this list.
- */
- if (forceit) {
- if (*cmd != NUL && ap->next == NULL) {
- au_remove_cmds(ap);
- break;
- }
- au_remove_pat(ap);
- }
- /*
- * Show autocmd's for this autopat, or buflocals <buffer=X>
- */
- else if (*cmd == NUL)
- show_autocmd(ap, event);
-
- /*
- * Add autocmd to this autopat, if it's the last one.
- */
- else if (ap->next == NULL)
- break;
- }
- }
- prev_ap = &ap->next;
- }
-
- /*
- * Add a new command.
- */
- if (*cmd != NUL) {
- /*
- * If the pattern we want to add a command to does appear at the
- * end of the list (or not is not in the list at all), add the
- * pattern at the end of the list.
- */
- if (ap == NULL) {
- /* refuse to add buffer-local ap if buffer number is invalid */
- if (is_buflocal && (buflocal_nr == 0
- || buflist_findnr(buflocal_nr) == NULL)) {
- EMSGN(_("E680: <buffer=%d>: invalid buffer number "),
- buflocal_nr);
- return FAIL;
- }
-
- ap = (AutoPat *)alloc((unsigned)sizeof(AutoPat));
- ap->pat = vim_strnsave(pat, patlen);
- ap->patlen = patlen;
- if (ap->pat == NULL) {
- free(ap);
- return FAIL;
- }
-
- if (is_buflocal) {
- ap->buflocal_nr = buflocal_nr;
- ap->reg_prog = NULL;
- } else {
- char_u *reg_pat;
-
- ap->buflocal_nr = 0;
- reg_pat = file_pat_to_reg_pat(pat, endpat,
- &ap->allow_dirs, TRUE);
- if (reg_pat != NULL)
- ap->reg_prog = vim_regcomp(reg_pat, RE_MAGIC);
- free(reg_pat);
- if (reg_pat == NULL || ap->reg_prog == NULL) {
- free(ap->pat);
- free(ap);
- return FAIL;
- }
- }
- ap->cmds = NULL;
- *prev_ap = ap;
- ap->next = NULL;
- if (group == AUGROUP_ALL)
- ap->group = current_augroup;
- else
- ap->group = group;
- }
-
- /*
- * Add the autocmd at the end of the AutoCmd list.
- */
- prev_ac = &(ap->cmds);
- while ((ac = *prev_ac) != NULL)
- prev_ac = &ac->next;
- ac = (AutoCmd *)alloc((unsigned)sizeof(AutoCmd));
- ac->cmd = vim_strsave(cmd);
- ac->scriptID = current_SID;
- if (ac->cmd == NULL) {
- free(ac);
- return FAIL;
- }
- ac->next = NULL;
- *prev_ac = ac;
- ac->nested = nested;
- }
- }
-
- au_cleanup(); /* may really delete removed patterns/commands now */
- return OK;
-}
-
-/*
- * Implementation of ":doautocmd [group] event [fname]".
- * Return OK for success, FAIL for failure;
- */
-int
-do_doautocmd (
- char_u *arg,
- int do_msg /* give message for no matching autocmds? */
-)
-{
- char_u *fname;
- int nothing_done = TRUE;
- int group;
-
- /*
- * Check for a legal group name. If not, use AUGROUP_ALL.
- */
- group = au_get_grouparg(&arg);
- if (arg == NULL) /* out of memory */
- return FAIL;
-
- if (*arg == '*') {
- EMSG(_("E217: Can't execute autocommands for ALL events"));
- return FAIL;
- }
-
- /*
- * Scan over the events.
- * If we find an illegal name, return here, don't do anything.
- */
- fname = find_end_event(arg, group != AUGROUP_ALL);
- if (fname == NULL)
- return FAIL;
-
- fname = skipwhite(fname);
-
- /*
- * Loop over the events.
- */
- while (*arg && !vim_iswhite(*arg))
- if (apply_autocmds_group(event_name2nr(arg, &arg),
- fname, NULL, TRUE, group, curbuf, NULL))
- nothing_done = FALSE;
-
- if (nothing_done && do_msg)
- MSG(_("No matching autocommands"));
-
- return aborting() ? FAIL : OK;
-}
-
-/*
- * ":doautoall": execute autocommands for each loaded buffer.
- */
-void ex_doautoall(exarg_T *eap)
-{
- int retval;
- aco_save_T aco;
- buf_T *buf;
- char_u *arg = eap->arg;
- int call_do_modelines = check_nomodeline(&arg);
-
- /*
- * This is a bit tricky: For some commands curwin->w_buffer needs to be
- * equal to curbuf, but for some buffers there may not be a window.
- * So we change the buffer for the current window for a moment. This
- * gives problems when the autocommands make changes to the list of
- * buffers or windows...
- */
- for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
- if (buf->b_ml.ml_mfp != NULL) {
- /* find a window for this buffer and save some values */
- aucmd_prepbuf(&aco, buf);
-
- /* execute the autocommands for this buffer */
- retval = do_doautocmd(arg, FALSE);
-
- if (call_do_modelines) {
- /* Execute the modeline settings, but don't set window-local
- * options if we are using the current window for another
- * buffer. */
- do_modelines(curwin == aucmd_win ? OPT_NOWIN : 0);
- }
-
- /* restore the current window */
- aucmd_restbuf(&aco);
-
- /* stop if there is some error or buffer was deleted */
- if (retval == FAIL || !buf_valid(buf))
- break;
- }
- }
-
- check_cursor(); /* just in case lines got deleted */
-}
-
-/*
- * Check *argp for <nomodeline>. When it is present return FALSE, otherwise
- * return TRUE and advance *argp to after it.
- * Thus return TRUE when do_modelines() should be called.
- */
-int check_nomodeline(char_u **argp)
-{
- if (STRNCMP(*argp, "<nomodeline>", 12) == 0) {
- *argp = skipwhite(*argp + 12);
- return FALSE;
- }
- return TRUE;
-}
-
-/*
- * Prepare for executing autocommands for (hidden) buffer "buf".
- * Search for a visible window containing the current buffer. If there isn't
- * one then use "aucmd_win".
- * Set "curbuf" and "curwin" to match "buf".
- * When FEAT_AUTOCMD is not defined another version is used, see below.
- */
-void
-aucmd_prepbuf (
- aco_save_T *aco, /* structure to save values in */
- buf_T *buf /* new curbuf */
-)
-{
- win_T *win;
- int save_ea;
- int save_acd;
-
- /* Find a window that is for the new buffer */
- if (buf == curbuf) /* be quick when buf is curbuf */
- win = curwin;
- else
- for (win = firstwin; win != NULL; win = win->w_next)
- if (win->w_buffer == buf)
- break;
-
- /* Allocate "aucmd_win" when needed. If this fails (out of memory) fall
- * back to using the current window. */
- if (win == NULL && aucmd_win == NULL) {
- win_alloc_aucmd_win();
- if (aucmd_win == NULL)
- win = curwin;
- }
- if (win == NULL && aucmd_win_used)
- /* Strange recursive autocommand, fall back to using the current
- * window. Expect a few side effects... */
- win = curwin;
-
- aco->save_curwin = curwin;
- aco->save_curbuf = curbuf;
- if (win != NULL) {
- /* There is a window for "buf" in the current tab page, make it the
- * curwin. This is preferred, it has the least side effects (esp. if
- * "buf" is curbuf). */
- aco->use_aucmd_win = FALSE;
- curwin = win;
- } else {
- /* There is no window for "buf", use "aucmd_win". To minimize the side
- * effects, insert it in the current tab page.
- * Anything related to a window (e.g., setting folds) may have
- * unexpected results. */
- aco->use_aucmd_win = TRUE;
- aucmd_win_used = TRUE;
- aucmd_win->w_buffer = buf;
- aucmd_win->w_s = &buf->b_s;
- ++buf->b_nwindows;
- win_init_empty(aucmd_win); /* set cursor and topline to safe values */
-
- /* Make sure w_localdir and globaldir are NULL to avoid a chdir() in
- * win_enter_ext(). */
- free(aucmd_win->w_localdir);
- aucmd_win->w_localdir = NULL;
- aco->globaldir = globaldir;
- globaldir = NULL;
-
-
- /* Split the current window, put the aucmd_win in the upper half.
- * We don't want the BufEnter or WinEnter autocommands. */
- block_autocmds();
- make_snapshot(SNAP_AUCMD_IDX);
- save_ea = p_ea;
- p_ea = FALSE;
-
- /* Prevent chdir() call in win_enter_ext(), through do_autochdir(). */
- save_acd = p_acd;
- p_acd = FALSE;
-
- (void)win_split_ins(0, WSP_TOP, aucmd_win, 0);
- (void)win_comp_pos(); /* recompute window positions */
- p_ea = save_ea;
- p_acd = save_acd;
- unblock_autocmds();
- curwin = aucmd_win;
- }
- curbuf = buf;
- aco->new_curwin = curwin;
- aco->new_curbuf = curbuf;
-}
-
-/*
- * Cleanup after executing autocommands for a (hidden) buffer.
- * Restore the window as it was (if possible).
- * When FEAT_AUTOCMD is not defined another version is used, see below.
- */
-void
-aucmd_restbuf (
- aco_save_T *aco /* structure holding saved values */
-)
-{
- int dummy;
-
- if (aco->use_aucmd_win) {
- --curbuf->b_nwindows;
- /* Find "aucmd_win", it can't be closed, but it may be in another tab
- * page. Do not trigger autocommands here. */
- block_autocmds();
- if (curwin != aucmd_win) {
- tabpage_T *tp;
- win_T *wp;
-
- FOR_ALL_TAB_WINDOWS(tp, wp)
- {
- if (wp == aucmd_win) {
- if (tp != curtab)
- goto_tabpage_tp(tp, TRUE, TRUE);
- win_goto(aucmd_win);
- goto win_found;
- }
- }
- }
-win_found:
-
- /* Remove the window and frame from the tree of frames. */
- (void)winframe_remove(curwin, &dummy, NULL);
- win_remove(curwin, NULL);
- aucmd_win_used = FALSE;
- last_status(FALSE); /* may need to remove last status line */
- restore_snapshot(SNAP_AUCMD_IDX, FALSE);
- (void)win_comp_pos(); /* recompute window positions */
- unblock_autocmds();
-
- if (win_valid(aco->save_curwin))
- curwin = aco->save_curwin;
- else
- /* Hmm, original window disappeared. Just use the first one. */
- curwin = firstwin;
- vars_clear(&aucmd_win->w_vars->dv_hashtab); /* free all w: variables */
- hash_init(&aucmd_win->w_vars->dv_hashtab); /* re-use the hashtab */
- curbuf = curwin->w_buffer;
-
- free(globaldir);
- globaldir = aco->globaldir;
-
- /* the buffer contents may have changed */
- check_cursor();
- if (curwin->w_topline > curbuf->b_ml.ml_line_count) {
- curwin->w_topline = curbuf->b_ml.ml_line_count;
- curwin->w_topfill = 0;
- }
- } else {
- /* restore curwin */
- if (win_valid(aco->save_curwin)) {
- /* Restore the buffer which was previously edited by curwin, if
- * it was changed, we are still the same window and the buffer is
- * valid. */
- if (curwin == aco->new_curwin
- && curbuf != aco->new_curbuf
- && buf_valid(aco->new_curbuf)
- && aco->new_curbuf->b_ml.ml_mfp != NULL) {
- if (curwin->w_s == &curbuf->b_s)
- curwin->w_s = &aco->new_curbuf->b_s;
- --curbuf->b_nwindows;
- curbuf = aco->new_curbuf;
- curwin->w_buffer = curbuf;
- ++curbuf->b_nwindows;
- }
-
- curwin = aco->save_curwin;
- curbuf = curwin->w_buffer;
- }
- }
-}
-
-static int autocmd_nested = FALSE;
-
-/*
- * Execute autocommands for "event" and file name "fname".
- * Return TRUE if some commands were executed.
- */
-int
-apply_autocmds (
- event_T event,
- char_u *fname, /* NULL or empty means use actual file name */
- char_u *fname_io, /* fname to use for <afile> on cmdline */
- int force, /* when TRUE, ignore autocmd_busy */
- buf_T *buf /* buffer for <abuf> */
-)
-{
- return apply_autocmds_group(event, fname, fname_io, force,
- AUGROUP_ALL, buf, NULL);
-}
-
-/*
- * Like apply_autocmds(), but with extra "eap" argument. This takes care of
- * setting v:filearg.
- */
-static int apply_autocmds_exarg(event_T event, char_u *fname, char_u *fname_io, int force, buf_T *buf, exarg_T *eap)
-{
- return apply_autocmds_group(event, fname, fname_io, force,
- AUGROUP_ALL, buf, eap);
-}
-
-/*
- * Like apply_autocmds(), but handles the caller's retval. If the script
- * processing is being aborted or if retval is FAIL when inside a try
- * conditional, no autocommands are executed. If otherwise the autocommands
- * cause the script to be aborted, retval is set to FAIL.
- */
-int
-apply_autocmds_retval (
- event_T event,
- char_u *fname, /* NULL or empty means use actual file name */
- char_u *fname_io, /* fname to use for <afile> on cmdline */
- int force, /* when TRUE, ignore autocmd_busy */
- buf_T *buf, /* buffer for <abuf> */
- int *retval /* pointer to caller's retval */
-)
-{
- int did_cmd;
-
- if (should_abort(*retval))
- return FALSE;
-
- did_cmd = apply_autocmds_group(event, fname, fname_io, force,
- AUGROUP_ALL, buf, NULL);
- if (did_cmd
- && aborting()
- )
- *retval = FAIL;
- return did_cmd;
-}
-
-/*
- * Return TRUE when there is a CursorHold autocommand defined.
- */
-int has_cursorhold(void)
-{
- return first_autopat[(int)(get_real_state() == NORMAL_BUSY
- ? EVENT_CURSORHOLD : EVENT_CURSORHOLDI)] != NULL;
-}
-
-/*
- * Return TRUE if the CursorHold event can be triggered.
- */
-int trigger_cursorhold(void)
-{
- int state;
-
- if (!did_cursorhold
- && has_cursorhold()
- && !Recording
- && typebuf.tb_len == 0
- && !ins_compl_active()
- ) {
- state = get_real_state();
- if (state == NORMAL_BUSY || (state & INSERT) != 0)
- return TRUE;
- }
- return FALSE;
-}
-
-/*
- * Return TRUE when there is a CursorMoved autocommand defined.
- */
-int has_cursormoved(void)
-{
- return first_autopat[(int)EVENT_CURSORMOVED] != NULL;
-}
-
-/*
- * Return TRUE when there is a CursorMovedI autocommand defined.
- */
-int has_cursormovedI(void)
-{
- return first_autopat[(int)EVENT_CURSORMOVEDI] != NULL;
-}
-
-/*
- * Return TRUE when there is a TextChanged autocommand defined.
- */
-int has_textchanged(void)
-{
- return first_autopat[(int)EVENT_TEXTCHANGED] != NULL;
-}
-
-/*
- * Return TRUE when there is a TextChangedI autocommand defined.
- */
-int has_textchangedI(void)
-{
- return first_autopat[(int)EVENT_TEXTCHANGEDI] != NULL;
-}
-
-/*
- * Return TRUE when there is an InsertCharPre autocommand defined.
- */
-int has_insertcharpre(void)
-{
- return first_autopat[(int)EVENT_INSERTCHARPRE] != NULL;
-}
-
-static int
-apply_autocmds_group (
- event_T event,
- char_u *fname, /* NULL or empty means use actual file name */
- char_u *fname_io, /* fname to use for <afile> on cmdline, NULL means
- use fname */
- int force, /* when TRUE, ignore autocmd_busy */
- int group, /* group ID, or AUGROUP_ALL */
- buf_T *buf, /* buffer for <abuf> */
- exarg_T *eap /* command arguments */
-)
-{
- char_u *sfname = NULL; /* short file name */
- char_u *tail;
- int save_changed;
- buf_T *old_curbuf;
- int retval = FALSE;
- char_u *save_sourcing_name;
- linenr_T save_sourcing_lnum;
- char_u *save_autocmd_fname;
- int save_autocmd_fname_full;
- int save_autocmd_bufnr;
- char_u *save_autocmd_match;
- int save_autocmd_busy;
- int save_autocmd_nested;
- static int nesting = 0;
- AutoPatCmd patcmd;
- AutoPat *ap;
- scid_T save_current_SID;
- void *save_funccalp;
- char_u *save_cmdarg;
- long save_cmdbang;
- static int filechangeshell_busy = FALSE;
- proftime_T wait_time;
-
- /*
- * Quickly return if there are no autocommands for this event or
- * autocommands are blocked.
- */
- if (first_autopat[(int)event] == NULL || autocmd_blocked > 0)
- goto BYPASS_AU;
-
- /*
- * When autocommands are busy, new autocommands are only executed when
- * explicitly enabled with the "nested" flag.
- */
- if (autocmd_busy && !(force || autocmd_nested))
- goto BYPASS_AU;
-
- /*
- * Quickly return when immediately aborting on error, or when an interrupt
- * occurred or an exception was thrown but not caught.
- */
- if (aborting())
- goto BYPASS_AU;
-
- /*
- * FileChangedShell never nests, because it can create an endless loop.
- */
- if (filechangeshell_busy && (event == EVENT_FILECHANGEDSHELL
- || event == EVENT_FILECHANGEDSHELLPOST))
- goto BYPASS_AU;
-
- /*
- * Ignore events in 'eventignore'.
- */
- if (event_ignored(event))
- goto BYPASS_AU;
-
- /*
- * Allow nesting of autocommands, but restrict the depth, because it's
- * possible to create an endless loop.
- */
- if (nesting == 10) {
- EMSG(_("E218: autocommand nesting too deep"));
- goto BYPASS_AU;
- }
-
- /*
- * Check if these autocommands are disabled. Used when doing ":all" or
- * ":ball".
- */
- if ( (autocmd_no_enter
- && (event == EVENT_WINENTER || event == EVENT_BUFENTER))
- || (autocmd_no_leave
- && (event == EVENT_WINLEAVE || event == EVENT_BUFLEAVE)))
- goto BYPASS_AU;
-
- /*
- * Save the autocmd_* variables and info about the current buffer.
- */
- save_autocmd_fname = autocmd_fname;
- save_autocmd_fname_full = autocmd_fname_full;
- save_autocmd_bufnr = autocmd_bufnr;
- save_autocmd_match = autocmd_match;
- save_autocmd_busy = autocmd_busy;
- save_autocmd_nested = autocmd_nested;
- save_changed = curbuf->b_changed;
- old_curbuf = curbuf;
-
- /*
- * Set the file name to be used for <afile>.
- * Make a copy to avoid that changing a buffer name or directory makes it
- * invalid.
- */
- if (fname_io == NULL) {
- if (event == EVENT_COLORSCHEME)
- autocmd_fname = NULL;
- else if (fname != NULL && *fname != NUL)
- autocmd_fname = fname;
- else if (buf != NULL)
- autocmd_fname = buf->b_ffname;
- else
- autocmd_fname = NULL;
- } else
- autocmd_fname = fname_io;
- if (autocmd_fname != NULL)
- autocmd_fname = vim_strsave(autocmd_fname);
- autocmd_fname_full = FALSE; /* call FullName_save() later */
-
- /*
- * Set the buffer number to be used for <abuf>.
- */
- if (buf == NULL)
- autocmd_bufnr = 0;
- else
- autocmd_bufnr = buf->b_fnum;
-
- /*
- * When the file name is NULL or empty, use the file name of buffer "buf".
- * Always use the full path of the file name to match with, in case
- * "allow_dirs" is set.
- */
- if (fname == NULL || *fname == NUL) {
- if (buf == NULL)
- fname = NULL;
- else {
- if (event == EVENT_SYNTAX)
- fname = buf->b_p_syn;
- else if (event == EVENT_FILETYPE)
- fname = buf->b_p_ft;
- else {
- if (buf->b_sfname != NULL)
- sfname = vim_strsave(buf->b_sfname);
- fname = buf->b_ffname;
- }
- }
- if (fname == NULL)
- fname = (char_u *)"";
- fname = vim_strsave(fname); /* make a copy, so we can change it */
- } else {
- sfname = vim_strsave(fname);
- /* Don't try expanding FileType, Syntax, FuncUndefined, WindowID,
- * ColorScheme, QuickFixCmd or JobActivity */
- if (event == EVENT_FILETYPE
- || event == EVENT_SYNTAX
- || event == EVENT_FUNCUNDEFINED
- || event == EVENT_REMOTEREPLY
- || event == EVENT_SPELLFILEMISSING
- || event == EVENT_QUICKFIXCMDPRE
- || event == EVENT_COLORSCHEME
- || event == EVENT_QUICKFIXCMDPOST
- || event == EVENT_JOBACTIVITY)
- fname = vim_strsave(fname);
- else
- fname = FullName_save(fname, FALSE);
- }
- if (fname == NULL) { /* out of memory */
- free(sfname);
- retval = FALSE;
- goto BYPASS_AU;
- }
-
-#ifdef BACKSLASH_IN_FILENAME
- /*
- * Replace all backslashes with forward slashes. This makes the
- * autocommand patterns portable between Unix and MS-DOS.
- */
- if (sfname != NULL)
- forward_slash(sfname);
- forward_slash(fname);
-#endif
-
-
- /*
- * Set the name to be used for <amatch>.
- */
- autocmd_match = fname;
-
-
- /* Don't redraw while doing auto commands. */
- ++RedrawingDisabled;
- save_sourcing_name = sourcing_name;
- sourcing_name = NULL; /* don't free this one */
- save_sourcing_lnum = sourcing_lnum;
- sourcing_lnum = 0; /* no line number here */
-
- save_current_SID = current_SID;
-
- if (do_profiling == PROF_YES)
- prof_child_enter(&wait_time); /* doesn't count for the caller itself */
-
- /* Don't use local function variables, if called from a function */
- save_funccalp = save_funccal();
-
- /*
- * When starting to execute autocommands, save the search patterns.
- */
- if (!autocmd_busy) {
- save_search_patterns();
- saveRedobuff();
- did_filetype = keep_filetype;
- }
-
- /*
- * Note that we are applying autocmds. Some commands need to know.
- */
- autocmd_busy = TRUE;
- filechangeshell_busy = (event == EVENT_FILECHANGEDSHELL);
- ++nesting; /* see matching decrement below */
-
- /* Remember that FileType was triggered. Used for did_filetype(). */
- if (event == EVENT_FILETYPE)
- did_filetype = TRUE;
-
- tail = path_tail(fname);
-
- /* Find first autocommand that matches */
- patcmd.curpat = first_autopat[(int)event];
- patcmd.nextcmd = NULL;
- patcmd.group = group;
- patcmd.fname = fname;
- patcmd.sfname = sfname;
- patcmd.tail = tail;
- patcmd.event = event;
- patcmd.arg_bufnr = autocmd_bufnr;
- patcmd.next = NULL;
- auto_next_pat(&patcmd, FALSE);
-
- /* found one, start executing the autocommands */
- if (patcmd.curpat != NULL) {
- /* add to active_apc_list */
- patcmd.next = active_apc_list;
- active_apc_list = &patcmd;
-
- /* set v:cmdarg (only when there is a matching pattern) */
- save_cmdbang = get_vim_var_nr(VV_CMDBANG);
- if (eap != NULL) {
- save_cmdarg = set_cmdarg(eap, NULL);
- set_vim_var_nr(VV_CMDBANG, (long)eap->forceit);
- } else
- save_cmdarg = NULL; /* avoid gcc warning */
- retval = TRUE;
- /* mark the last pattern, to avoid an endless loop when more patterns
- * are added when executing autocommands */
- for (ap = patcmd.curpat; ap->next != NULL; ap = ap->next)
- ap->last = FALSE;
- ap->last = TRUE;
- check_lnums(TRUE); /* make sure cursor and topline are valid */
- do_cmdline(NULL, getnextac, (void *)&patcmd,
- DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
- if (eap != NULL) {
- (void)set_cmdarg(NULL, save_cmdarg);
- set_vim_var_nr(VV_CMDBANG, save_cmdbang);
- }
- /* delete from active_apc_list */
- if (active_apc_list == &patcmd) /* just in case */
- active_apc_list = patcmd.next;
- }
-
- --RedrawingDisabled;
- autocmd_busy = save_autocmd_busy;
- filechangeshell_busy = FALSE;
- autocmd_nested = save_autocmd_nested;
- free(sourcing_name);
- sourcing_name = save_sourcing_name;
- sourcing_lnum = save_sourcing_lnum;
- free(autocmd_fname);
- autocmd_fname = save_autocmd_fname;
- autocmd_fname_full = save_autocmd_fname_full;
- autocmd_bufnr = save_autocmd_bufnr;
- autocmd_match = save_autocmd_match;
- current_SID = save_current_SID;
- restore_funccal(save_funccalp);
- if (do_profiling == PROF_YES)
- prof_child_exit(&wait_time);
- free(fname);
- free(sfname);
- --nesting; /* see matching increment above */
-
- // When stopping to execute autocommands, restore the search patterns and
- // the redo buffer. Free buffers in the au_pending_free_buf list.
- if (!autocmd_busy) {
- restore_search_patterns();
- restoreRedobuff();
- did_filetype = FALSE;
- while (au_pending_free_buf != NULL) {
- buf_T *b = au_pending_free_buf->b_next;
- free(au_pending_free_buf);
- au_pending_free_buf = b;
- }
- }
-
- /*
- * Some events don't set or reset the Changed flag.
- * Check if still in the same buffer!
- */
- if (curbuf == old_curbuf
- && (event == EVENT_BUFREADPOST
- || event == EVENT_BUFWRITEPOST
- || event == EVENT_FILEAPPENDPOST
- || event == EVENT_VIMLEAVE
- || event == EVENT_VIMLEAVEPRE)) {
- if (curbuf->b_changed != save_changed)
- need_maketitle = TRUE;
- curbuf->b_changed = save_changed;
- }
-
- au_cleanup(); /* may really delete removed patterns/commands now */
-
-BYPASS_AU:
- /* When wiping out a buffer make sure all its buffer-local autocommands
- * are deleted. */
- if (event == EVENT_BUFWIPEOUT && buf != NULL)
- aubuflocal_remove(buf);
-
- return retval;
-}
-
-static char_u *old_termresponse = NULL;
-
-/*
- * Block triggering autocommands until unblock_autocmd() is called.
- * Can be used recursively, so long as it's symmetric.
- */
-void block_autocmds(void)
-{
- /* Remember the value of v:termresponse. */
- if (autocmd_blocked == 0)
- old_termresponse = get_vim_var_str(VV_TERMRESPONSE);
- ++autocmd_blocked;
-}
-
-void unblock_autocmds(void)
-{
- --autocmd_blocked;
-
- /* When v:termresponse was set while autocommands were blocked, trigger
- * the autocommands now. Esp. useful when executing a shell command
- * during startup (vimdiff). */
- if (autocmd_blocked == 0
- && get_vim_var_str(VV_TERMRESPONSE) != old_termresponse)
- apply_autocmds(EVENT_TERMRESPONSE, NULL, NULL, FALSE, curbuf);
-}
-
-/*
- * Find next autocommand pattern that matches.
- */
-static void
-auto_next_pat (
- AutoPatCmd *apc,
- int stop_at_last /* stop when 'last' flag is set */
-)
-{
- AutoPat *ap;
- AutoCmd *cp;
- char_u *name;
- char *s;
-
- free(sourcing_name);
- sourcing_name = NULL;
-
- for (ap = apc->curpat; ap != NULL && !got_int; ap = ap->next) {
- apc->curpat = NULL;
-
- /* Only use a pattern when it has not been removed, has commands and
- * the group matches. For buffer-local autocommands only check the
- * buffer number. */
- if (ap->pat != NULL && ap->cmds != NULL
- && (apc->group == AUGROUP_ALL || apc->group == ap->group)) {
- /* execution-condition */
- if (ap->buflocal_nr == 0
- ? (match_file_pat(NULL, ap->reg_prog, apc->fname,
- apc->sfname, apc->tail, ap->allow_dirs))
- : ap->buflocal_nr == apc->arg_bufnr) {
- name = event_nr2name(apc->event);
- s = _("%s Auto commands for \"%s\"");
- sourcing_name = alloc((unsigned)(STRLEN(s)
- + STRLEN(name) + ap->patlen + 1));
- sprintf((char *)sourcing_name, s,
- (char *)name, (char *)ap->pat);
- if (p_verbose >= 8) {
- verbose_enter();
- smsg((char_u *)_("Executing %s"), sourcing_name);
- verbose_leave();
- }
-
- apc->curpat = ap;
- apc->nextcmd = ap->cmds;
- /* mark last command */
- for (cp = ap->cmds; cp->next != NULL; cp = cp->next)
- cp->last = FALSE;
- cp->last = TRUE;
- }
- line_breakcheck();
- if (apc->curpat != NULL) /* found a match */
- break;
- }
- if (stop_at_last && ap->last)
- break;
- }
-}
-
-/*
- * Get next autocommand command.
- * Called by do_cmdline() to get the next line for ":if".
- * Returns allocated string, or NULL for end of autocommands.
- */
-char_u *getnextac(int c, void *cookie, int indent)
-{
- AutoPatCmd *acp = (AutoPatCmd *)cookie;
- char_u *retval;
- AutoCmd *ac;
-
- /* Can be called again after returning the last line. */
- if (acp->curpat == NULL)
- return NULL;
-
- /* repeat until we find an autocommand to execute */
- for (;; ) {
- /* skip removed commands */
- while (acp->nextcmd != NULL && acp->nextcmd->cmd == NULL)
- if (acp->nextcmd->last)
- acp->nextcmd = NULL;
- else
- acp->nextcmd = acp->nextcmd->next;
-
- if (acp->nextcmd != NULL)
- break;
-
- /* at end of commands, find next pattern that matches */
- if (acp->curpat->last)
- acp->curpat = NULL;
- else
- acp->curpat = acp->curpat->next;
- if (acp->curpat != NULL)
- auto_next_pat(acp, TRUE);
- if (acp->curpat == NULL)
- return NULL;
- }
-
- ac = acp->nextcmd;
-
- if (p_verbose >= 9) {
- verbose_enter_scroll();
- smsg((char_u *)_("autocommand %s"), ac->cmd);
- msg_puts((char_u *)"\n"); /* don't overwrite this either */
- verbose_leave_scroll();
- }
- retval = vim_strsave(ac->cmd);
- autocmd_nested = ac->nested;
- current_SID = ac->scriptID;
- if (ac->last)
- acp->nextcmd = NULL;
- else
- acp->nextcmd = ac->next;
- return retval;
-}
-
-/*
- * Return TRUE if there is a matching autocommand for "fname".
- * To account for buffer-local autocommands, function needs to know
- * in which buffer the file will be opened.
- */
-int has_autocmd(event_T event, char_u *sfname, buf_T *buf)
-{
- AutoPat *ap;
- char_u *fname;
- char_u *tail = path_tail(sfname);
- int retval = FALSE;
-
- fname = FullName_save(sfname, FALSE);
- if (fname == NULL)
- return FALSE;
-
-#ifdef BACKSLASH_IN_FILENAME
- /*
- * Replace all backslashes with forward slashes. This makes the
- * autocommand patterns portable between Unix and MS-DOS.
- */
- sfname = vim_strsave(sfname);
- if (sfname != NULL)
- forward_slash(sfname);
- forward_slash(fname);
-#endif
-
- for (ap = first_autopat[(int)event]; ap != NULL; ap = ap->next)
- if (ap->pat != NULL && ap->cmds != NULL
- && (ap->buflocal_nr == 0
- ? match_file_pat(NULL, ap->reg_prog,
- fname, sfname, tail, ap->allow_dirs)
- : buf != NULL && ap->buflocal_nr == buf->b_fnum
- )) {
- retval = TRUE;
- break;
- }
-
- free(fname);
-#ifdef BACKSLASH_IN_FILENAME
- free(sfname);
-#endif
-
- return retval;
-}
-
-/*
- * Function given to ExpandGeneric() to obtain the list of autocommand group
- * names.
- */
-char_u *get_augroup_name(expand_T *xp, int idx)
-{
- if (idx == augroups.ga_len) /* add "END" add the end */
- return (char_u *)"END";
- if (idx >= augroups.ga_len) /* end of list */
- return NULL;
- if (AUGROUP_NAME(idx) == NULL) /* skip deleted entries */
- return (char_u *)"";
- return AUGROUP_NAME(idx); /* return a name */
-}
-
-static int include_groups = FALSE;
-
-char_u *
-set_context_in_autocmd (
- expand_T *xp,
- char_u *arg,
- int doautocmd /* TRUE for :doauto*, FALSE for :autocmd */
-)
-{
- char_u *p;
- int group;
-
- /* check for a group name, skip it if present */
- include_groups = FALSE;
- p = arg;
- group = au_get_grouparg(&arg);
- if (group == AUGROUP_ERROR)
- return NULL;
- /* If there only is a group name that's what we expand. */
- if (*arg == NUL && group != AUGROUP_ALL && !vim_iswhite(arg[-1])) {
- arg = p;
- group = AUGROUP_ALL;
- }
-
- /* skip over event name */
- for (p = arg; *p != NUL && !vim_iswhite(*p); ++p)
- if (*p == ',')
- arg = p + 1;
- if (*p == NUL) {
- if (group == AUGROUP_ALL)
- include_groups = TRUE;
- xp->xp_context = EXPAND_EVENTS; /* expand event name */
- xp->xp_pattern = arg;
- return NULL;
- }
-
- /* skip over pattern */
- arg = skipwhite(p);
- while (*arg && (!vim_iswhite(*arg) || arg[-1] == '\\'))
- arg++;
- if (*arg)
- return arg; /* expand (next) command */
-
- if (doautocmd)
- xp->xp_context = EXPAND_FILES; /* expand file names */
- else
- xp->xp_context = EXPAND_NOTHING; /* pattern is not expanded */
- return NULL;
-}
-
-/*
- * Function given to ExpandGeneric() to obtain the list of event names.
- */
-char_u *get_event_name(expand_T *xp, int idx)
-{
- if (idx < augroups.ga_len) { /* First list group names, if wanted */
- if (!include_groups || AUGROUP_NAME(idx) == NULL)
- return (char_u *)""; /* skip deleted entries */
- return AUGROUP_NAME(idx); /* return a name */
- }
- return (char_u *)event_names[idx - augroups.ga_len].name;
-}
-
-
-/*
- * Return TRUE if autocmd is supported.
- */
-int autocmd_supported(char_u *name)
-{
- char_u *p;
-
- return event_name2nr(name, &p) != NUM_EVENTS;
-}
-
-/*
- * Return TRUE if an autocommand is defined for a group, event and
- * pattern: The group can be omitted to accept any group. "event" and "pattern"
- * can be NULL to accept any event and pattern. "pattern" can be NULL to accept
- * any pattern. Buffer-local patterns <buffer> or <buffer=N> are accepted.
- * Used for:
- * exists("#Group") or
- * exists("#Group#Event") or
- * exists("#Group#Event#pat") or
- * exists("#Event") or
- * exists("#Event#pat")
- */
-int au_exists(char_u *arg)
-{
- char_u *arg_save;
- char_u *pattern = NULL;
- char_u *event_name;
- char_u *p;
- event_T event;
- AutoPat *ap;
- buf_T *buflocal_buf = NULL;
- int group;
- int retval = FALSE;
-
- /* Make a copy so that we can change the '#' chars to a NUL. */
- arg_save = vim_strsave(arg);
- if (arg_save == NULL)
- return FALSE;
- p = vim_strchr(arg_save, '#');
- if (p != NULL)
- *p++ = NUL;
-
- /* First, look for an autocmd group name */
- group = au_find_group(arg_save);
- if (group == AUGROUP_ERROR) {
- /* Didn't match a group name, assume the first argument is an event. */
- group = AUGROUP_ALL;
- event_name = arg_save;
- } else {
- if (p == NULL) {
- /* "Group": group name is present and it's recognized */
- retval = TRUE;
- goto theend;
- }
-
- /* Must be "Group#Event" or "Group#Event#pat". */
- event_name = p;
- p = vim_strchr(event_name, '#');
- if (p != NULL)
- *p++ = NUL; /* "Group#Event#pat" */
- }
-
- pattern = p; /* "pattern" is NULL when there is no pattern */
-
- /* find the index (enum) for the event name */
- event = event_name2nr(event_name, &p);
-
- /* return FALSE if the event name is not recognized */
- if (event == NUM_EVENTS)
- goto theend;
-
- /* Find the first autocommand for this event.
- * If there isn't any, return FALSE;
- * If there is one and no pattern given, return TRUE; */
- ap = first_autopat[(int)event];
- if (ap == NULL)
- goto theend;
-
- /* if pattern is "<buffer>", special handling is needed which uses curbuf */
- /* for pattern "<buffer=N>, fnamecmp() will work fine */
- if (pattern != NULL && STRICMP(pattern, "<buffer>") == 0)
- buflocal_buf = curbuf;
-
- /* Check if there is an autocommand with the given pattern. */
- for (; ap != NULL; ap = ap->next)
- /* only use a pattern when it has not been removed and has commands. */
- /* For buffer-local autocommands, fnamecmp() works fine. */
- if (ap->pat != NULL && ap->cmds != NULL
- && (group == AUGROUP_ALL || ap->group == group)
- && (pattern == NULL
- || (buflocal_buf == NULL
- ? fnamecmp(ap->pat, pattern) == 0
- : ap->buflocal_nr == buflocal_buf->b_fnum))) {
- retval = TRUE;
- break;
- }
-
-theend:
- free(arg_save);
- return retval;
-}
-
-
-
-/*
- * Try matching a filename with a "pattern" ("prog" is NULL), or use the
- * precompiled regprog "prog" ("pattern" is NULL). That avoids calling
- * vim_regcomp() often.
- * Used for autocommands and 'wildignore'.
- * Returns TRUE if there is a match, FALSE otherwise.
- */
-int
-match_file_pat (
- char_u *pattern, /* pattern to match with */
- regprog_T *prog, /* pre-compiled regprog or NULL */
- char_u *fname, /* full path of file name */
- char_u *sfname, /* short file name or NULL */
- char_u *tail, /* tail of path */
- int allow_dirs /* allow matching with dir */
-)
-{
- regmatch_T regmatch;
- int result = FALSE;
-#ifdef FEAT_OSFILETYPE
- int no_pattern = FALSE; /* TRUE if check is filetype only */
- char_u *type_start;
- char_u c;
- int match = FALSE;
-#endif
-
- regmatch.rm_ic = p_fic; /* ignore case if 'fileignorecase' is set */
-#ifdef FEAT_OSFILETYPE
- if (*pattern == '<') {
- /* There is a filetype condition specified with this pattern.
- * Check the filetype matches first. If not, don't bother with the
- * pattern (set regprog to NULL).
- * Always use magic for the regexp.
- */
-
- for (type_start = pattern + 1; (c = *pattern); pattern++) {
- if ((c == ';' || c == '>') && match == FALSE) {
- *pattern = NUL; /* Terminate the string */
- /* TODO: match with 'filetype' of buffer that "fname" comes
- * from. */
- match = mch_check_filetype(fname, type_start);
- *pattern = c; /* Restore the terminator */
- type_start = pattern + 1;
- }
- if (c == '>')
- break;
- }
-
- /* (c should never be NUL, but check anyway) */
- if (match == FALSE || c == NUL)
- regmatch.regprog = NULL; /* Doesn't match - don't check pat. */
- else if (*pattern == NUL) {
- regmatch.regprog = NULL; /* Vim will try to free regprog later */
- no_pattern = TRUE; /* Always matches - don't check pat. */
- } else
- regmatch.regprog = vim_regcomp(pattern + 1, RE_MAGIC);
- } else
-#endif
- {
- if (prog != NULL)
- regmatch.regprog = prog;
- else
- regmatch.regprog = vim_regcomp(pattern, RE_MAGIC);
- }
-
- /*
- * Try for a match with the pattern with:
- * 1. the full file name, when the pattern has a '/'.
- * 2. the short file name, when the pattern has a '/'.
- * 3. the tail of the file name, when the pattern has no '/'.
- */
- if (
-#ifdef FEAT_OSFILETYPE
- /* If the check is for a filetype only and we don't care
- * about the path then skip all the regexp stuff.
- */
- no_pattern ||
-#endif
- (regmatch.regprog != NULL
- && ((allow_dirs
- && (vim_regexec(&regmatch, fname, (colnr_T)0)
- || (sfname != NULL
- && vim_regexec(&regmatch, sfname, (colnr_T)0))))
- || (!allow_dirs && vim_regexec(&regmatch, tail, (colnr_T)0)))))
- result = TRUE;
-
- if (prog == NULL)
- vim_regfree(regmatch.regprog);
- return result;
-}
-
-/*
- * Return TRUE if a file matches with a pattern in "list".
- * "list" is a comma-separated list of patterns, like 'wildignore'.
- * "sfname" is the short file name or NULL, "ffname" the long file name.
- */
-int match_file_list(char_u *list, char_u *sfname, char_u *ffname)
-{
- char_u buf[100];
- char_u *tail;
- char_u *regpat;
- char allow_dirs;
- int match;
- char_u *p;
-
- tail = path_tail(sfname);
-
- /* try all patterns in 'wildignore' */
- p = list;
- while (*p) {
- copy_option_part(&p, buf, 100, ",");
- regpat = file_pat_to_reg_pat(buf, NULL, &allow_dirs, FALSE);
- if (regpat == NULL)
- break;
- match = match_file_pat(regpat, NULL, ffname, sfname,
- tail, (int)allow_dirs);
- free(regpat);
- if (match)
- return TRUE;
- }
- return FALSE;
-}
-
-/*
- * Convert the given pattern "pat" which has shell style wildcards in it, into
- * a regular expression, and return the result in allocated memory. If there
- * is a directory path separator to be matched, then TRUE is put in
- * allow_dirs, otherwise FALSE is put there -- webb.
- * Handle backslashes before special characters, like "\*" and "\ ".
- *
- * If FEAT_OSFILETYPE defined then pass initial <type> through unchanged. Eg:
- * '<html>myfile' becomes '<html>^myfile$' -- leonard.
- *
- * Returns NULL on failure.
- */
-char_u *
-file_pat_to_reg_pat (
- char_u *pat,
- char_u *pat_end, /* first char after pattern or NULL */
- char *allow_dirs, /* Result passed back out in here */
- int no_bslash /* Don't use a backward slash as pathsep */
-)
-{
- size_t size;
- char_u *endp;
- char_u *reg_pat;
- char_u *p;
- int i;
- int nested = 0;
- int add_dollar = TRUE;
-#ifdef FEAT_OSFILETYPE
- int check_length = 0;
-#endif
-
- if (allow_dirs != NULL)
- *allow_dirs = FALSE;
- if (pat_end == NULL)
- pat_end = pat + STRLEN(pat);
-
-#ifdef FEAT_OSFILETYPE
- /* Find out how much of the string is the filetype check */
- if (*pat == '<') {
- /* Count chars until the next '>' */
- for (p = pat + 1; p < pat_end && *p != '>'; p++)
- ;
- if (p < pat_end) {
- /* Pattern is of the form <.*>.* */
- check_length = p - pat + 1;
- if (p + 1 >= pat_end) {
- /* The 'pattern' is a filetype check ONLY */
- reg_pat = xmemdupz(pat, (size_t)check_length);
- return reg_pat;
- }
- }
- /* else: there was no closing '>' - assume it was a normal pattern */
-
- }
- pat += check_length;
- size = 2 + (size_t)check_length;
-#else
- size = 2; /* '^' at start, '$' at end */
-#endif
-
- for (p = pat; p < pat_end; p++) {
- switch (*p) {
- case '*':
- case '.':
- case ',':
- case '{':
- case '}':
- case '~':
- size += 2; /* extra backslash */
- break;
-#ifdef BACKSLASH_IN_FILENAME
- case '\\':
- case '/':
- size += 4; /* could become "[\/]" */
- break;
-#endif
- default:
- size++;
- if (enc_dbcs != 0 && (*mb_ptr2len)(p) > 1) {
- ++p;
- ++size;
- }
- break;
- }
- }
- reg_pat = xmalloc(size + 1);
-
-#ifdef FEAT_OSFILETYPE
- /* Copy the type check in to the start. */
- if (check_length)
- memmove(reg_pat, pat - check_length, (size_t)check_length);
- i = check_length;
-#else
- i = 0;
-#endif
-
- if (pat[0] == '*')
- while (pat[0] == '*' && pat < pat_end - 1)
- pat++;
- else
- reg_pat[i++] = '^';
- endp = pat_end - 1;
- if (*endp == '*') {
- while (endp - pat > 0 && *endp == '*')
- endp--;
- add_dollar = FALSE;
- }
- for (p = pat; *p && nested >= 0 && p <= endp; p++) {
- switch (*p) {
- case '*':
- reg_pat[i++] = '.';
- reg_pat[i++] = '*';
- while (p[1] == '*') /* "**" matches like "*" */
- ++p;
- break;
- case '.':
- case '~':
- reg_pat[i++] = '\\';
- reg_pat[i++] = *p;
- break;
- case '?':
- reg_pat[i++] = '.';
- break;
- case '\\':
- if (p[1] == NUL)
- break;
-#ifdef BACKSLASH_IN_FILENAME
- if (!no_bslash) {
- /* translate:
- * "\x" to "\\x" e.g., "dir\file"
- * "\*" to "\\.*" e.g., "dir\*.c"
- * "\?" to "\\." e.g., "dir\??.c"
- * "\+" to "\+" e.g., "fileX\+.c"
- */
- if ((vim_isfilec(p[1]) || p[1] == '*' || p[1] == '?')
- && p[1] != '+') {
- reg_pat[i++] = '[';
- reg_pat[i++] = '\\';
- reg_pat[i++] = '/';
- reg_pat[i++] = ']';
- if (allow_dirs != NULL)
- *allow_dirs = TRUE;
- break;
- }
- }
-#endif
- /* Undo escaping from ExpandEscape():
- * foo\?bar -> foo?bar
- * foo\%bar -> foo%bar
- * foo\,bar -> foo,bar
- * foo\ bar -> foo bar
- * Don't unescape \, * and others that are also special in a
- * regexp.
- * An escaped { must be unescaped since we use magic not
- * verymagic. Use "\\\{n,m\}"" to get "\{n,m}".
- */
- if (*++p == '?'
-#ifdef BACKSLASH_IN_FILENAME
- && no_bslash
-#endif
- )
- reg_pat[i++] = '?';
- else if (*p == ',' || *p == '%' || *p == '#'
- || *p == ' ' || *p == '{' || *p == '}')
- reg_pat[i++] = *p;
- else if (*p == '\\' && p[1] == '\\' && p[2] == '{') {
- reg_pat[i++] = '\\';
- reg_pat[i++] = '{';
- p += 2;
- } else {
- if (allow_dirs != NULL && vim_ispathsep(*p)
-#ifdef BACKSLASH_IN_FILENAME
- && (!no_bslash || *p != '\\')
-#endif
- )
- *allow_dirs = TRUE;
- reg_pat[i++] = '\\';
- reg_pat[i++] = *p;
- }
- break;
-#ifdef BACKSLASH_IN_FILENAME
- case '/':
- reg_pat[i++] = '[';
- reg_pat[i++] = '\\';
- reg_pat[i++] = '/';
- reg_pat[i++] = ']';
- if (allow_dirs != NULL)
- *allow_dirs = TRUE;
- break;
-#endif
- case '{':
- reg_pat[i++] = '\\';
- reg_pat[i++] = '(';
- nested++;
- break;
- case '}':
- reg_pat[i++] = '\\';
- reg_pat[i++] = ')';
- --nested;
- break;
- case ',':
- if (nested) {
- reg_pat[i++] = '\\';
- reg_pat[i++] = '|';
- } else
- reg_pat[i++] = ',';
- break;
- default:
- if (enc_dbcs != 0 && (*mb_ptr2len)(p) > 1)
- reg_pat[i++] = *p++;
- else if (allow_dirs != NULL && vim_ispathsep(*p))
- *allow_dirs = TRUE;
- reg_pat[i++] = *p;
- break;
- }
- }
- if (add_dollar)
- reg_pat[i++] = '$';
- reg_pat[i] = NUL;
- if (nested != 0) {
- if (nested < 0)
- EMSG(_("E219: Missing {."));
- else
- EMSG(_("E220: Missing }."));
- free(reg_pat);
- reg_pat = NULL;
- }
- return reg_pat;
-}
-
-#if defined(EINTR) || defined(PROTO)
-/*
- * Version of read() that retries when interrupted by EINTR (possibly
- * by a SIGWINCH).
- */
-long read_eintr(fd, buf, bufsize)
-int fd;
-void *buf;
-size_t bufsize;
-{
- long ret;
-
- for (;; ) {
- ret = vim_read(fd, buf, bufsize);
- if (ret >= 0 || errno != EINTR)
- break;
- }
- return ret;
-}
-
-/*
- * Version of write() that retries when interrupted by EINTR (possibly
- * by a SIGWINCH).
- */
-long write_eintr(fd, buf, bufsize)
-int fd;
-void *buf;
-size_t bufsize;
-{
- long ret = 0;
- long wlen;
-
- /* Repeat the write() so long it didn't fail, other than being interrupted
- * by a signal. */
- while (ret < (long)bufsize) {
- wlen = vim_write(fd, (char *)buf + ret, bufsize - ret);
- if (wlen < 0) {
- if (errno != EINTR)
- break;
- } else
- ret += wlen;
- }
- return ret;
-}
-#endif
generated by cgit (git 2.34.1) at 2025-07-27 03:48:02 +0000