From da51dc9cf202772f60bd2da975dbef257bd9237c Mon Sep 17 00:00:00 2001 From: Eliseo Martínez Date: Mon, 12 May 2014 02:25:17 +0200 Subject: Introduce nvim namespace: Move files. Move files from src/ to src/nvim/. - src/nvim/ becomes the new root dir for nvim executable sources. - src/libnvim/ is planned to become root dir of the neovim library. --- src/nvim/getchar.c | 4333 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 4333 insertions(+) create mode 100644 src/nvim/getchar.c (limited to 'src/nvim/getchar.c') diff --git a/src/nvim/getchar.c b/src/nvim/getchar.c new file mode 100644 index 0000000000..99dbc11e4d --- /dev/null +++ b/src/nvim/getchar.c @@ -0,0 +1,4333 @@ +/* + * 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. + */ + +/* + * getchar.c + * + * functions related with getting a character from the user/mapping/redo/... + * + * manipulations with redo buffer and stuff buffer + * mappings and abbreviations + */ + +#include + +#include "vim.h" +#include "getchar.h" +#include "charset.h" +#include "edit.h" +#include "eval.h" +#include "ex_docmd.h" +#include "ex_getln.h" +#include "farsi.h" +#include "main.h" +#include "mbyte.h" +#include "memline.h" +#include "memory.h" +#include "message.h" +#include "misc1.h" +#include "misc2.h" +#include "keymap.h" +#include "garray.h" +#include "move.h" +#include "normal.h" +#include "ops.h" +#include "option.h" +#include "regexp.h" +#include "screen.h" +#include "term.h" +#include "ui.h" +#include "undo.h" + +/* + * These buffers are used for storing: + * - stuffed characters: A command that is translated into another command. + * - redo characters: will redo the last change. + * - recorded characters: for the "q" command. + * + * The bytes are stored like in the typeahead buffer: + * - K_SPECIAL introduces a special key (two more bytes follow). A literal + * K_SPECIAL is stored as K_SPECIAL KS_SPECIAL KE_FILLER. + * - CSI introduces a GUI termcap code (also when gui.in_use is FALSE, + * otherwise switching the GUI on would make mappings invalid). + * A literal CSI is stored as CSI KS_EXTRA KE_CSI. + * These translations are also done on multi-byte characters! + * + * Escaping CSI bytes is done by the system-specific input functions, called + * by ui_inchar(). + * Escaping K_SPECIAL is done by inchar(). + * Un-escaping is done by vgetc(). + */ + +#define MINIMAL_SIZE 20 /* minimal size for b_str */ + +static buffheader_T redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T old_redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T save_redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T save_old_redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T recordbuff = {{NULL, {NUL}}, NULL, 0, 0}; + +// First read ahead buffer. Used for translated commands. +static buffheader_T readbuf1 = {{NULL, {NUL}}, NULL, 0, 0}; + +// Second read ahead buffer. Used for redo. +static buffheader_T readbuf2 = {{NULL, {NUL}}, NULL, 0, 0}; + +static int typeahead_char = 0; /* typeahead char that's not flushed */ + +/* + * when block_redo is TRUE redo buffer will not be changed + * used by edit() to repeat insertions and 'V' command for redoing + */ +static int block_redo = FALSE; + +/* + * Make a hash value for a mapping. + * "mode" is the lower 4 bits of the State for the mapping. + * "c1" is the first character of the "lhs". + * Returns a value between 0 and 255, index in maphash. + * Put Normal/Visual mode mappings mostly separately from Insert/Cmdline mode. + */ +#define MAP_HASH(mode, \ + c1) (((mode) & \ + (NORMAL + VISUAL + SELECTMODE + \ + OP_PENDING)) ? (c1) : ((c1) ^ 0x80)) + +/* + * Each mapping is put in one of the 256 hash lists, to speed up finding it. + */ +static mapblock_T *(maphash[256]); +static int maphash_valid = FALSE; + +/* + * List used for abbreviations. + */ +static mapblock_T *first_abbr = NULL; /* first entry in abbrlist */ + +static int KeyNoremap = 0; /* remapping flags */ + +/* + * variables used by vgetorpeek() and flush_buffers() + * + * typebuf.tb_buf[] contains all characters that are not consumed yet. + * typebuf.tb_buf[typebuf.tb_off] is the first valid character. + * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len - 1] is the last valid char. + * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len] must be NUL. + * The head of the buffer may contain the result of mappings, abbreviations + * and @a commands. The length of this part is typebuf.tb_maplen. + * typebuf.tb_silent is the part where applies. + * After the head are characters that come from the terminal. + * typebuf.tb_no_abbr_cnt is the number of characters in typebuf.tb_buf that + * should not be considered for abbreviations. + * Some parts of typebuf.tb_buf may not be mapped. These parts are remembered + * in typebuf.tb_noremap[], which is the same length as typebuf.tb_buf and + * contains RM_NONE for the characters that are not to be remapped. + * typebuf.tb_noremap[typebuf.tb_off] is the first valid flag. + * (typebuf has been put in globals.h, because check_termcode() needs it). + */ +#define RM_YES 0 /* tb_noremap: remap */ +#define RM_NONE 1 /* tb_noremap: don't remap */ +#define RM_SCRIPT 2 /* tb_noremap: remap local script mappings */ +#define RM_ABBR 4 /* tb_noremap: don't remap, do abbrev. */ + +/* typebuf.tb_buf has three parts: room in front (for result of mappings), the + * middle for typeahead and room for new characters (which needs to be 3 * + * MAXMAPLEN) for the Amiga). + */ +#define TYPELEN_INIT (5 * (MAXMAPLEN + 3)) +static char_u typebuf_init[TYPELEN_INIT]; /* initial typebuf.tb_buf */ +static char_u noremapbuf_init[TYPELEN_INIT]; /* initial typebuf.tb_noremap */ + +static int last_recorded_len = 0; /* number of last recorded chars */ + +static char_u *get_buffcont(buffheader_T *, int); +static void add_buff(buffheader_T *, char_u *, long n); +static void add_num_buff(buffheader_T *, long); +static void add_char_buff(buffheader_T *, int); +static int read_readbuffers(int advance); +static int read_readbuf(buffheader_T *buf, int advance); +static void start_stuff(void); +static int read_redo(int, int); +static void copy_redo(int); +static void init_typebuf(void); +static void gotchars(char_u *, int); +static void may_sync_undo(void); +static void closescript(void); +static int vgetorpeek(int); +static void map_free(mapblock_T **); +static void validate_maphash(void); +static void showmap(mapblock_T *mp, int local); +static char_u *eval_map_expr(char_u *str, int c); +static bool is_user_input(int k); + +/* + * Free and clear a buffer. + */ +void free_buff(buffheader_T *buf) +{ + buffblock_T *p, *np; + + for (p = buf->bh_first.b_next; p != NULL; p = np) { + np = p->b_next; + free(p); + } + buf->bh_first.b_next = NULL; +} + +/* + * Return the contents of a buffer as a single string. + * K_SPECIAL and CSI in the returned string are escaped. + */ +static char_u *get_buffcont(buffheader_T *buffer, + int dozero // count == zero is not an error + ) +{ + size_t count = 0; + char_u *p = NULL; + char_u *p2; + char_u *str; + + /* compute the total length of the string */ + for (buffblock_T *bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) + count += STRLEN(bp->b_str); + + if (count || dozero) { + p = xmalloc(count + 1); + p2 = p; + for (buffblock_T *bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) + for (str = bp->b_str; *str; ) + *p2++ = *str++; + *p2 = NUL; + } + return p; +} + +/* + * Return the contents of the record buffer as a single string + * and clear the record buffer. + * K_SPECIAL and CSI in the returned string are escaped. + */ +char_u *get_recorded(void) +{ + char_u *p; + size_t len; + + p = get_buffcont(&recordbuff, TRUE); + free_buff(&recordbuff); + + /* + * Remove the characters that were added the last time, these must be the + * (possibly mapped) characters that stopped the recording. + */ + len = STRLEN(p); + if ((int)len >= last_recorded_len) { + len -= last_recorded_len; + p[len] = NUL; + } + + /* + * When stopping recording from Insert mode with CTRL-O q, also remove the + * CTRL-O. + */ + if (len > 0 && restart_edit != 0 && p[len - 1] == Ctrl_O) + p[len - 1] = NUL; + + return p; +} + +/* + * Return the contents of the redo buffer as a single string. + * K_SPECIAL and CSI in the returned string are escaped. + */ +char_u *get_inserted(void) +{ + return get_buffcont(&redobuff, FALSE); +} + +/* + * Add string "s" after the current block of buffer "buf". + * K_SPECIAL and CSI should have been escaped already. + */ +static void +add_buff ( + buffheader_T *buf, + char_u *s, + long slen /* length of "s" or -1 */ +) +{ + if (slen < 0) + slen = (long)STRLEN(s); + if (slen == 0) /* don't add empty strings */ + return; + + if (buf->bh_first.b_next == NULL) { /* first add to list */ + buf->bh_space = 0; + buf->bh_curr = &(buf->bh_first); + } else if (buf->bh_curr == NULL) { /* buffer has already been read */ + EMSG(_("E222: Add to read buffer")); + return; + } else if (buf->bh_index != 0) + memmove(buf->bh_first.b_next->b_str, + buf->bh_first.b_next->b_str + buf->bh_index, + STRLEN(buf->bh_first.b_next->b_str + buf->bh_index) + 1); + buf->bh_index = 0; + + ssize_t len; + if (buf->bh_space >= (int)slen) { + len = STRLEN(buf->bh_curr->b_str); + vim_strncpy(buf->bh_curr->b_str + len, s, (size_t)slen); + buf->bh_space -= slen; + } else { + if (slen < MINIMAL_SIZE) + len = MINIMAL_SIZE; + else + len = slen; + buffblock_T *p = xmalloc(sizeof(buffblock_T) + len); + buf->bh_space = (int)(len - slen); + vim_strncpy(p->b_str, s, (size_t)slen); + + p->b_next = buf->bh_curr->b_next; + buf->bh_curr->b_next = p; + buf->bh_curr = p; + } + return; +} + +/* + * Add number "n" to buffer "buf". + */ +static void add_num_buff(buffheader_T *buf, long n) +{ + char_u number[32]; + + sprintf((char *)number, "%" PRId64, (int64_t)n); + add_buff(buf, number, -1L); +} + +/* + * Add character 'c' to buffer "buf". + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ +static void add_char_buff(buffheader_T *buf, int c) +{ + char_u bytes[MB_MAXBYTES + 1]; + int len; + int i; + char_u temp[4]; + + if (IS_SPECIAL(c)) + len = 1; + else + len = (*mb_char2bytes)(c, bytes); + for (i = 0; i < len; ++i) { + if (!IS_SPECIAL(c)) + c = bytes[i]; + + if (IS_SPECIAL(c) || c == K_SPECIAL || c == NUL) { + /* translate special key code into three byte sequence */ + temp[0] = K_SPECIAL; + temp[1] = K_SECOND(c); + temp[2] = K_THIRD(c); + temp[3] = NUL; + } else { + temp[0] = c; + temp[1] = NUL; + } + add_buff(buf, temp, -1L); + } +} + +/* + * Get one byte from the read buffers. Use readbuf1 one first, use readbuf2 + * if that one is empty. + * If advance == TRUE go to the next char. + * No translation is done K_SPECIAL and CSI are escaped. + */ +static int read_readbuffers(int advance) +{ + int c; + + c = read_readbuf(&readbuf1, advance); + if (c == NUL) + c = read_readbuf(&readbuf2, advance); + return c; +} + +static int read_readbuf(buffheader_T *buf, int advance) +{ + char_u c; + buffblock_T *curr; + + if (buf->bh_first.b_next == NULL) /* buffer is empty */ + return NUL; + + curr = buf->bh_first.b_next; + c = curr->b_str[buf->bh_index]; + + if (advance) { + if (curr->b_str[++buf->bh_index] == NUL) { + buf->bh_first.b_next = curr->b_next; + free(curr); + buf->bh_index = 0; + } + } + return c; +} + +/* + * Prepare the read buffers for reading (if they contain something). + */ +static void start_stuff(void) +{ + if (readbuf1.bh_first.b_next != NULL) { + readbuf1.bh_curr = &(readbuf1.bh_first); + readbuf1.bh_space = 0; + } + if (readbuf2.bh_first.b_next != NULL) { + readbuf2.bh_curr = &(readbuf2.bh_first); + readbuf2.bh_space = 0; + } +} + +/* + * Return TRUE if the stuff buffer is empty. + */ +int stuff_empty(void) +{ + return (readbuf1.bh_first.b_next == NULL && readbuf2.bh_first.b_next == NULL); +} + +/* + * Return TRUE if readbuf1 is empty. There may still be redo characters in + * redbuf2. + */ +int readbuf1_empty() +{ + return (readbuf1.bh_first.b_next == NULL); +} + +/* + * Set a typeahead character that won't be flushed. + */ +void typeahead_noflush(int c) +{ + typeahead_char = c; +} + +/* + * Remove the contents of the stuff buffer and the mapped characters in the + * typeahead buffer (used in case of an error). If "flush_typeahead" is true, + * flush all typeahead characters (used when interrupted by a CTRL-C). + */ +void flush_buffers(int flush_typeahead) +{ + init_typebuf(); + + start_stuff(); + while (read_readbuffers(TRUE) != NUL) { + } + + if (flush_typeahead) { /* remove all typeahead */ + /* + * We have to get all characters, because we may delete the first part + * of an escape sequence. + * In an xterm we get one char at a time and we have to get them all. + */ + while (inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 10L, + typebuf.tb_change_cnt) != 0) + ; + typebuf.tb_off = MAXMAPLEN; + typebuf.tb_len = 0; + } else { /* remove mapped characters at the start only */ + typebuf.tb_off += typebuf.tb_maplen; + typebuf.tb_len -= typebuf.tb_maplen; + } + typebuf.tb_maplen = 0; + typebuf.tb_silent = 0; + cmd_silent = FALSE; + typebuf.tb_no_abbr_cnt = 0; +} + +/* + * The previous contents of the redo buffer is kept in old_redobuffer. + * This is used for the CTRL-O <.> command in insert mode. + */ +void ResetRedobuff(void) +{ + if (!block_redo) { + free_buff(&old_redobuff); + old_redobuff = redobuff; + redobuff.bh_first.b_next = NULL; + } +} + +/* + * Discard the contents of the redo buffer and restore the previous redo + * buffer. + */ +void CancelRedo(void) +{ + if (!block_redo) { + free_buff(&redobuff); + redobuff = old_redobuff; + old_redobuff.bh_first.b_next = NULL; + start_stuff(); + while (read_readbuffers(TRUE) != NUL) { + } + } +} + +/* + * Save redobuff and old_redobuff to save_redobuff and save_old_redobuff. + * Used before executing autocommands and user functions. + */ +static int save_level = 0; + +void saveRedobuff(void) +{ + char_u *s; + + if (save_level++ == 0) { + save_redobuff = redobuff; + redobuff.bh_first.b_next = NULL; + save_old_redobuff = old_redobuff; + old_redobuff.bh_first.b_next = NULL; + + /* Make a copy, so that ":normal ." in a function works. */ + s = get_buffcont(&save_redobuff, FALSE); + if (s != NULL) { + add_buff(&redobuff, s, -1L); + free(s); + } + } +} + +/* + * Restore redobuff and old_redobuff from save_redobuff and save_old_redobuff. + * Used after executing autocommands and user functions. + */ +void restoreRedobuff(void) +{ + if (--save_level == 0) { + free_buff(&redobuff); + redobuff = save_redobuff; + free_buff(&old_redobuff); + old_redobuff = save_old_redobuff; + } +} + +/* + * Append "s" to the redo buffer. + * K_SPECIAL and CSI should already have been escaped. + */ +void AppendToRedobuff(char_u *s) +{ + if (!block_redo) + add_buff(&redobuff, s, -1L); +} + +/* + * Append to Redo buffer literally, escaping special characters with CTRL-V. + * K_SPECIAL and CSI are escaped as well. + */ +void +AppendToRedobuffLit ( + char_u *str, + int len /* length of "str" or -1 for up to the NUL */ +) +{ + char_u *s = str; + int c; + char_u *start; + + if (block_redo) + return; + + while (len < 0 ? *s != NUL : s - str < len) { + /* Put a string of normal characters in the redo buffer (that's + * faster). */ + start = s; + while (*s >= ' ' + && *s < DEL /* EBCDIC: all chars above space are normal */ + && (len < 0 || s - str < len)) + ++s; + + /* Don't put '0' or '^' as last character, just in case a CTRL-D is + * typed next. */ + if (*s == NUL && (s[-1] == '0' || s[-1] == '^')) + --s; + if (s > start) + add_buff(&redobuff, start, (long)(s - start)); + + if (*s == NUL || (len >= 0 && s - str >= len)) + break; + + /* Handle a special or multibyte character. */ + if (has_mbyte) + /* Handle composing chars separately. */ + c = mb_cptr2char_adv(&s); + else + c = *s++; + if (c < ' ' || c == DEL || (*s == NUL && (c == '0' || c == '^'))) + add_char_buff(&redobuff, Ctrl_V); + + /* CTRL-V '0' must be inserted as CTRL-V 048 (EBCDIC: xf0) */ + if (*s == NUL && c == '0') + add_buff(&redobuff, (char_u *)"048", 3L); + else + add_char_buff(&redobuff, c); + } +} + +/* + * Append a character to the redo buffer. + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ +void AppendCharToRedobuff(int c) +{ + if (!block_redo) + add_char_buff(&redobuff, c); +} + +/* + * Append a number to the redo buffer. + */ +void AppendNumberToRedobuff(long n) +{ + if (!block_redo) + add_num_buff(&redobuff, n); +} + +/* + * Append string "s" to the stuff buffer. + * CSI and K_SPECIAL must already have been escaped. + */ +void stuffReadbuff(char_u *s) +{ + add_buff(&readbuf1, s, -1L); +} + +void stuffReadbuffLen(char_u *s, long len) +{ + add_buff(&readbuf1, s, len); +} + +/* + * Stuff "s" into the stuff buffer, leaving special key codes unmodified and + * escaping other K_SPECIAL and CSI bytes. + * Change CR, LF and ESC into a space. + */ +void stuffReadbuffSpec(char_u *s) +{ + int c; + + while (*s != NUL) { + if (*s == K_SPECIAL && s[1] != NUL && s[2] != NUL) { + /* Insert special key literally. */ + stuffReadbuffLen(s, 3L); + s += 3; + } else { + c = mb_ptr2char_adv(&s); + if (c == CAR || c == NL || c == ESC) + c = ' '; + stuffcharReadbuff(c); + } + } +} + +/* + * Append a character to the stuff buffer. + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ +void stuffcharReadbuff(int c) +{ + add_char_buff(&readbuf1, c); +} + +/* + * Append a number to the stuff buffer. + */ +void stuffnumReadbuff(long n) +{ + add_num_buff(&readbuf1, n); +} + +/* + * Read a character from the redo buffer. Translates K_SPECIAL, CSI and + * multibyte characters. + * The redo buffer is left as it is. + * If init is TRUE, prepare for redo, return FAIL if nothing to redo, OK + * otherwise. + * If old is TRUE, use old_redobuff instead of redobuff. + */ +static int read_redo(int init, int old_redo) +{ + static buffblock_T *bp; + static char_u *p; + int c; + int n; + char_u buf[MB_MAXBYTES + 1]; + int i; + + if (init) { + if (old_redo) + bp = old_redobuff.bh_first.b_next; + else + bp = redobuff.bh_first.b_next; + if (bp == NULL) + return FAIL; + p = bp->b_str; + return OK; + } + if ((c = *p) != NUL) { + /* Reverse the conversion done by add_char_buff() */ + /* For a multi-byte character get all the bytes and return the + * converted character. */ + if (has_mbyte && (c != K_SPECIAL || p[1] == KS_SPECIAL)) + n = MB_BYTE2LEN_CHECK(c); + else + n = 1; + for (i = 0;; ++i) { + if (c == K_SPECIAL) { /* special key or escaped K_SPECIAL */ + c = TO_SPECIAL(p[1], p[2]); + p += 2; + } + if (*++p == NUL && bp->b_next != NULL) { + bp = bp->b_next; + p = bp->b_str; + } + buf[i] = c; + if (i == n - 1) { /* last byte of a character */ + if (n != 1) + c = (*mb_ptr2char)(buf); + break; + } + c = *p; + if (c == NUL) /* cannot happen? */ + break; + } + } + + return c; +} + +/* + * Copy the rest of the redo buffer into the stuff buffer (in a slow way). + * If old_redo is TRUE, use old_redobuff instead of redobuff. + * The escaped K_SPECIAL and CSI are copied without translation. + */ +static void copy_redo(int old_redo) +{ + int c; + + while ((c = read_redo(FALSE, old_redo)) != NUL) { + add_char_buff(&readbuf2, c); + } +} + +/* + * Stuff the redo buffer into readbuf2. + * Insert the redo count into the command. + * If "old_redo" is TRUE, the last but one command is repeated + * instead of the last command (inserting text). This is used for + * CTRL-O <.> in insert mode + * + * return FAIL for failure, OK otherwise + */ +int start_redo(long count, int old_redo) +{ + int c; + + /* init the pointers; return if nothing to redo */ + if (read_redo(TRUE, old_redo) == FAIL) + return FAIL; + + c = read_redo(FALSE, old_redo); + + /* copy the buffer name, if present */ + if (c == '"') { + add_buff(&readbuf2, (char_u *)"\"", 1L); + c = read_redo(FALSE, old_redo); + + /* if a numbered buffer is used, increment the number */ + if (c >= '1' && c < '9') + ++c; + add_char_buff(&readbuf2, c); + c = read_redo(FALSE, old_redo); + } + + if (c == 'v') { /* redo Visual */ + VIsual = curwin->w_cursor; + VIsual_active = TRUE; + VIsual_select = FALSE; + VIsual_reselect = TRUE; + redo_VIsual_busy = TRUE; + c = read_redo(FALSE, old_redo); + } + + /* try to enter the count (in place of a previous count) */ + if (count) { + while (VIM_ISDIGIT(c)) /* skip "old" count */ + c = read_redo(FALSE, old_redo); + add_num_buff(&readbuf2, count); + } + + /* copy from the redo buffer into the stuff buffer */ + add_char_buff(&readbuf2, c); + copy_redo(old_redo); + return OK; +} + +/* + * Repeat the last insert (R, o, O, a, A, i or I command) by stuffing + * the redo buffer into readbuf2. + * return FAIL for failure, OK otherwise + */ +int start_redo_ins(void) +{ + int c; + + if (read_redo(TRUE, FALSE) == FAIL) + return FAIL; + start_stuff(); + + /* skip the count and the command character */ + while ((c = read_redo(FALSE, FALSE)) != NUL) { + if (vim_strchr((char_u *)"AaIiRrOo", c) != NULL) { + if (c == 'O' || c == 'o') { + add_buff(&readbuf2, NL_STR, -1L); + } + break; + } + } + + /* copy the typed text from the redo buffer into the stuff buffer */ + copy_redo(FALSE); + block_redo = TRUE; + return OK; +} + +void stop_redo_ins(void) +{ + block_redo = FALSE; +} + +/* + * Initialize typebuf.tb_buf to point to typebuf_init. + * alloc() cannot be used here: In out-of-memory situations it would + * be impossible to type anything. + */ +static void init_typebuf(void) +{ + if (typebuf.tb_buf == NULL) { + typebuf.tb_buf = typebuf_init; + typebuf.tb_noremap = noremapbuf_init; + typebuf.tb_buflen = TYPELEN_INIT; + typebuf.tb_len = 0; + typebuf.tb_off = 0; + typebuf.tb_change_cnt = 1; + } +} + +/* + * insert a string in position 'offset' in the typeahead buffer (for "@r" + * and ":normal" command, vgetorpeek() and check_termcode()) + * + * If noremap is REMAP_YES, new string can be mapped again. + * If noremap is REMAP_NONE, new string cannot be mapped again. + * If noremap is REMAP_SKIP, fist char of new string cannot be mapped again, + * but abbreviations are allowed. + * If noremap is REMAP_SCRIPT, new string cannot be mapped again, except for + * script-local mappings. + * If noremap is > 0, that many characters of the new string cannot be mapped. + * + * If nottyped is TRUE, the string does not return KeyTyped (don't use when + * offset is non-zero!). + * + * If silent is TRUE, cmd_silent is set when the characters are obtained. + * + * return FAIL for failure, OK otherwise + */ +int ins_typebuf(char_u *str, int noremap, int offset, int nottyped, int silent) +{ + char_u *s1, *s2; + int newlen; + int addlen; + int i; + int newoff; + int val; + int nrm; + + init_typebuf(); + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; + + addlen = (int)STRLEN(str); + + /* + * Easy case: there is room in front of typebuf.tb_buf[typebuf.tb_off] + */ + if (offset == 0 && addlen <= typebuf.tb_off) { + typebuf.tb_off -= addlen; + memmove(typebuf.tb_buf + typebuf.tb_off, str, (size_t)addlen); + } + /* + * Need to allocate a new buffer. + * In typebuf.tb_buf there must always be room for 3 * MAXMAPLEN + 4 + * characters. We add some extra room to avoid having to allocate too + * often. + */ + else { + newoff = MAXMAPLEN + 4; + newlen = typebuf.tb_len + addlen + newoff + 4 * (MAXMAPLEN + 4); + if (newlen < 0) { /* string is getting too long */ + EMSG(_(e_toocompl)); /* also calls flush_buffers */ + setcursor(); + return FAIL; + } + s1 = alloc(newlen); + if (s1 == NULL) /* out of memory */ + return FAIL; + s2 = alloc(newlen); + if (s2 == NULL) { /* out of memory */ + free(s1); + return FAIL; + } + typebuf.tb_buflen = newlen; + + /* copy the old chars, before the insertion point */ + memmove(s1 + newoff, typebuf.tb_buf + typebuf.tb_off, + (size_t)offset); + /* copy the new chars */ + memmove(s1 + newoff + offset, str, (size_t)addlen); + /* copy the old chars, after the insertion point, including the NUL at + * the end */ + memmove(s1 + newoff + offset + addlen, + typebuf.tb_buf + typebuf.tb_off + offset, + (size_t)(typebuf.tb_len - offset + 1)); + if (typebuf.tb_buf != typebuf_init) + free(typebuf.tb_buf); + typebuf.tb_buf = s1; + + memmove(s2 + newoff, typebuf.tb_noremap + typebuf.tb_off, + (size_t)offset); + memmove(s2 + newoff + offset + addlen, + typebuf.tb_noremap + typebuf.tb_off + offset, + (size_t)(typebuf.tb_len - offset)); + if (typebuf.tb_noremap != noremapbuf_init) + free(typebuf.tb_noremap); + typebuf.tb_noremap = s2; + + typebuf.tb_off = newoff; + } + typebuf.tb_len += addlen; + + /* If noremap == REMAP_SCRIPT: do remap script-local mappings. */ + if (noremap == REMAP_SCRIPT) + val = RM_SCRIPT; + else if (noremap == REMAP_SKIP) + val = RM_ABBR; + else + val = RM_NONE; + + /* + * Adjust typebuf.tb_noremap[] for the new characters: + * If noremap == REMAP_NONE or REMAP_SCRIPT: new characters are + * (sometimes) not remappable + * If noremap == REMAP_YES: all the new characters are mappable + * If noremap > 0: "noremap" characters are not remappable, the rest + * mappable + */ + if (noremap == REMAP_SKIP) + nrm = 1; + else if (noremap < 0) + nrm = addlen; + else + nrm = noremap; + for (i = 0; i < addlen; ++i) + typebuf.tb_noremap[typebuf.tb_off + i + offset] = + (--nrm >= 0) ? val : RM_YES; + + /* tb_maplen and tb_silent only remember the length of mapped and/or + * silent mappings at the start of the buffer, assuming that a mapped + * sequence doesn't result in typed characters. */ + if (nottyped || typebuf.tb_maplen > offset) + typebuf.tb_maplen += addlen; + if (silent || typebuf.tb_silent > offset) { + typebuf.tb_silent += addlen; + cmd_silent = TRUE; + } + if (typebuf.tb_no_abbr_cnt && offset == 0) /* and not used for abbrev.s */ + typebuf.tb_no_abbr_cnt += addlen; + + return OK; +} + +/* + * Put character "c" back into the typeahead buffer. + * Can be used for a character obtained by vgetc() that needs to be put back. + * Uses cmd_silent, KeyTyped and KeyNoremap to restore the flags belonging to + * the char. + */ +void ins_char_typebuf(int c) +{ + char_u buf[MB_MAXBYTES + 1]; + if (IS_SPECIAL(c)) { + buf[0] = K_SPECIAL; + buf[1] = K_SECOND(c); + buf[2] = K_THIRD(c); + buf[3] = NUL; + } else { + buf[(*mb_char2bytes)(c, buf)] = NUL; + } + (void)ins_typebuf(buf, KeyNoremap, 0, !KeyTyped, cmd_silent); +} + +/* + * Return TRUE if the typeahead buffer was changed (while waiting for a + * character to arrive). Happens when a message was received from a client or + * from feedkeys(). + * But check in a more generic way to avoid trouble: When "typebuf.tb_buf" + * changed it was reallocated and the old pointer can no longer be used. + * Or "typebuf.tb_off" may have been changed and we would overwrite characters + * that was just added. + */ +int +typebuf_changed ( + int tb_change_cnt /* old value of typebuf.tb_change_cnt */ +) +{ + return tb_change_cnt != 0 && (typebuf.tb_change_cnt != tb_change_cnt + || typebuf_was_filled + ); +} + +/* + * Return TRUE if there are no characters in the typeahead buffer that have + * not been typed (result from a mapping or come from ":normal"). + */ +int typebuf_typed(void) +{ + return typebuf.tb_maplen == 0; +} + +/* + * Return the number of characters that are mapped (or not typed). + */ +int typebuf_maplen(void) +{ + return typebuf.tb_maplen; +} + +/* + * remove "len" characters from typebuf.tb_buf[typebuf.tb_off + offset] + */ +void del_typebuf(int len, int offset) +{ + int i; + + if (len == 0) + return; /* nothing to do */ + + typebuf.tb_len -= len; + + /* + * Easy case: Just increase typebuf.tb_off. + */ + if (offset == 0 && typebuf.tb_buflen - (typebuf.tb_off + len) + >= 3 * MAXMAPLEN + 3) + typebuf.tb_off += len; + /* + * Have to move the characters in typebuf.tb_buf[] and typebuf.tb_noremap[] + */ + else { + i = typebuf.tb_off + offset; + /* + * Leave some extra room at the end to avoid reallocation. + */ + if (typebuf.tb_off > MAXMAPLEN) { + memmove(typebuf.tb_buf + MAXMAPLEN, + typebuf.tb_buf + typebuf.tb_off, (size_t)offset); + memmove(typebuf.tb_noremap + MAXMAPLEN, + typebuf.tb_noremap + typebuf.tb_off, (size_t)offset); + typebuf.tb_off = MAXMAPLEN; + } + /* adjust typebuf.tb_buf (include the NUL at the end) */ + memmove(typebuf.tb_buf + typebuf.tb_off + offset, + typebuf.tb_buf + i + len, + (size_t)(typebuf.tb_len - offset + 1)); + /* adjust typebuf.tb_noremap[] */ + memmove(typebuf.tb_noremap + typebuf.tb_off + offset, + typebuf.tb_noremap + i + len, + (size_t)(typebuf.tb_len - offset)); + } + + if (typebuf.tb_maplen > offset) { /* adjust tb_maplen */ + if (typebuf.tb_maplen < offset + len) + typebuf.tb_maplen = offset; + else + typebuf.tb_maplen -= len; + } + if (typebuf.tb_silent > offset) { /* adjust tb_silent */ + if (typebuf.tb_silent < offset + len) + typebuf.tb_silent = offset; + else + typebuf.tb_silent -= len; + } + if (typebuf.tb_no_abbr_cnt > offset) { /* adjust tb_no_abbr_cnt */ + if (typebuf.tb_no_abbr_cnt < offset + len) + typebuf.tb_no_abbr_cnt = offset; + else + typebuf.tb_no_abbr_cnt -= len; + } + + /* Reset the flag that text received from a client or from feedkeys() + * was inserted in the typeahead buffer. */ + typebuf_was_filled = FALSE; + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; +} + +/* + * Write typed characters to script file. + * If recording is on put the character in the recordbuffer. + */ +static void gotchars(char_u *chars, int len) +{ + char_u *s = chars; + int c; + char_u buf[2]; + int todo = len; + + /* remember how many chars were last recorded */ + if (Recording) + last_recorded_len += len; + + buf[1] = NUL; + while (todo--) { + /* Handle one byte at a time; no translation to be done. */ + c = *s++; + updatescript(c); + + if (Recording) { + buf[0] = c; + add_buff(&recordbuff, buf, 1L); + } + } + may_sync_undo(); + + /* output "debug mode" message next time in debug mode */ + debug_did_msg = FALSE; + + /* Since characters have been typed, consider the following to be in + * another mapping. Search string will be kept in history. */ + ++maptick; +} + +/* + * Sync undo. Called when typed characters are obtained from the typeahead + * buffer, or when a menu is used. + * Do not sync: + * - In Insert mode, unless cursor key has been used. + * - While reading a script file. + * - When no_u_sync is non-zero. + */ +static void may_sync_undo(void) +{ + if ((!(State & (INSERT + CMDLINE)) || arrow_used) + && scriptin[curscript] == NULL) + u_sync(FALSE); +} + +/* + * Make "typebuf" empty and allocate new buffers. + * Returns FAIL when out of memory. + */ +int alloc_typebuf(void) +{ + typebuf.tb_buf = alloc(TYPELEN_INIT); + typebuf.tb_noremap = alloc(TYPELEN_INIT); + if (typebuf.tb_buf == NULL || typebuf.tb_noremap == NULL) { + free_typebuf(); + return FAIL; + } + typebuf.tb_buflen = TYPELEN_INIT; + typebuf.tb_off = 0; + typebuf.tb_len = 0; + typebuf.tb_maplen = 0; + typebuf.tb_silent = 0; + typebuf.tb_no_abbr_cnt = 0; + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; + return OK; +} + +/* + * Free the buffers of "typebuf". + */ +void free_typebuf(void) +{ + if (typebuf.tb_buf == typebuf_init) + EMSG2(_(e_intern2), "Free typebuf 1"); + else + free(typebuf.tb_buf); + if (typebuf.tb_noremap == noremapbuf_init) + EMSG2(_(e_intern2), "Free typebuf 2"); + else + free(typebuf.tb_noremap); +} + +/* + * When doing ":so! file", the current typeahead needs to be saved, and + * restored when "file" has been read completely. + */ +static typebuf_T saved_typebuf[NSCRIPT]; + +int save_typebuf(void) +{ + init_typebuf(); + saved_typebuf[curscript] = typebuf; + /* If out of memory: restore typebuf and close file. */ + if (alloc_typebuf() == FAIL) { + closescript(); + return FAIL; + } + return OK; +} + +static int old_char = -1; /* character put back by vungetc() */ +static int old_mod_mask; /* mod_mask for ungotten character */ +static int old_mouse_row; /* mouse_row related to old_char */ +static int old_mouse_col; /* mouse_col related to old_char */ + + +/* + * Save all three kinds of typeahead, so that the user must type at a prompt. + */ +void save_typeahead(tasave_T *tp) +{ + tp->save_typebuf = typebuf; + tp->typebuf_valid = (alloc_typebuf() == OK); + if (!tp->typebuf_valid) + typebuf = tp->save_typebuf; + + tp->old_char = old_char; + tp->old_mod_mask = old_mod_mask; + old_char = -1; + + tp->save_readbuf1 = readbuf1; + readbuf1.bh_first.b_next = NULL; + tp->save_readbuf2 = readbuf2; + readbuf2.bh_first.b_next = NULL; +# ifdef USE_INPUT_BUF + tp->save_inputbuf = get_input_buf(); +# endif +} + +/* + * Restore the typeahead to what it was before calling save_typeahead(). + * The allocated memory is freed, can only be called once! + */ +void restore_typeahead(tasave_T *tp) +{ + if (tp->typebuf_valid) { + free_typebuf(); + typebuf = tp->save_typebuf; + } + + old_char = tp->old_char; + old_mod_mask = tp->old_mod_mask; + + free_buff(&readbuf1); + readbuf1 = tp->save_readbuf1; + free_buff(&readbuf2); + readbuf2 = tp->save_readbuf2; +# ifdef USE_INPUT_BUF + set_input_buf(tp->save_inputbuf); +# endif +} + +/* + * Open a new script file for the ":source!" command. + */ +void +openscript ( + char_u *name, + int directly /* when TRUE execute directly */ +) +{ + if (curscript + 1 == NSCRIPT) { + EMSG(_(e_nesting)); + return; + } + if (ignore_script) + /* Not reading from script, also don't open one. Warning message? */ + return; + + if (scriptin[curscript] != NULL) /* already reading script */ + ++curscript; + /* use NameBuff for expanded name */ + expand_env(name, NameBuff, MAXPATHL); + if ((scriptin[curscript] = mch_fopen((char *)NameBuff, READBIN)) == NULL) { + EMSG2(_(e_notopen), name); + if (curscript) + --curscript; + return; + } + if (save_typebuf() == FAIL) + return; + + /* + * Execute the commands from the file right now when using ":source!" + * after ":global" or ":argdo" or in a loop. Also when another command + * follows. This means the display won't be updated. Don't do this + * always, "make test" would fail. + */ + if (directly) { + oparg_T oa; + int oldcurscript; + int save_State = State; + int save_restart_edit = restart_edit; + int save_insertmode = p_im; + int save_finish_op = finish_op; + int save_msg_scroll = msg_scroll; + + State = NORMAL; + msg_scroll = FALSE; /* no msg scrolling in Normal mode */ + restart_edit = 0; /* don't go to Insert mode */ + p_im = FALSE; /* don't use 'insertmode' */ + clear_oparg(&oa); + finish_op = FALSE; + + oldcurscript = curscript; + do { + update_topline_cursor(); /* update cursor position and topline */ + normal_cmd(&oa, FALSE); /* execute one command */ + vpeekc(); /* check for end of file */ + } while (scriptin[oldcurscript] != NULL); + + State = save_State; + msg_scroll = save_msg_scroll; + restart_edit = save_restart_edit; + p_im = save_insertmode; + finish_op = save_finish_op; + } +} + +/* + * Close the currently active input script. + */ +static void closescript(void) +{ + free_typebuf(); + typebuf = saved_typebuf[curscript]; + + fclose(scriptin[curscript]); + scriptin[curscript] = NULL; + if (curscript > 0) + --curscript; +} + +#if defined(EXITFREE) || defined(PROTO) +void close_all_scripts(void) +{ + while (scriptin[0] != NULL) + closescript(); +} + +#endif + +/* + * Return TRUE when reading keys from a script file. + */ +int using_script(void) +{ + return scriptin[curscript] != NULL; +} + +/* + * This function is called just before doing a blocking wait. Thus after + * waiting 'updatetime' for a character to arrive. + */ +void before_blocking(void) +{ + updatescript(0); + if (may_garbage_collect) + garbage_collect(); +} + +/* + * updatescipt() is called when a character can be written into the script file + * or when we have waited some time for a character (c == 0) + * + * All the changed memfiles are synced if c == 0 or when the number of typed + * characters reaches 'updatecount' and 'updatecount' is non-zero. + */ +void updatescript(int c) +{ + static int count = 0; + + if (c && scriptout) + putc(c, scriptout); + if (c == 0 || (p_uc > 0 && ++count >= p_uc)) { + ml_sync_all(c == 0, TRUE); + count = 0; + } +} + +/* + * Get the next input character. + * Can return a special key or a multi-byte character. + * Can return NUL when called recursively, use safe_vgetc() if that's not + * wanted. + * This translates escaped K_SPECIAL and CSI bytes to a K_SPECIAL or CSI byte. + * Collects the bytes of a multibyte character into the whole character. + * Returns the modifiers in the global "mod_mask". + */ +int vgetc(void) +{ + int c, c2; + int n; + char_u buf[MB_MAXBYTES + 1]; + int i; + + /* Do garbage collection when garbagecollect() was called previously and + * we are now at the toplevel. */ + if (may_garbage_collect && want_garbage_collect) + garbage_collect(); + + /* + * If a character was put back with vungetc, it was already processed. + * Return it directly. + */ + if (old_char != -1) { + c = old_char; + old_char = -1; + mod_mask = old_mod_mask; + mouse_row = old_mouse_row; + mouse_col = old_mouse_col; + } else { + mod_mask = 0x0; + last_recorded_len = 0; + for (;; ) { /* this is done twice if there are modifiers */ + if (mod_mask) { /* no mapping after modifier has been read */ + ++no_mapping; + ++allow_keys; + } + c = vgetorpeek(TRUE); + if (mod_mask) { + --no_mapping; + --allow_keys; + } + + /* Get two extra bytes for special keys */ + if (c == K_SPECIAL + ) { + int save_allow_keys = allow_keys; + + ++no_mapping; + allow_keys = 0; /* make sure BS is not found */ + c2 = vgetorpeek(TRUE); /* no mapping for these chars */ + c = vgetorpeek(TRUE); + --no_mapping; + allow_keys = save_allow_keys; + if (c2 == KS_MODIFIER) { + mod_mask = c; + continue; + } + c = TO_SPECIAL(c2, c); + + } + + /* a keypad or special function key was not mapped, use it like + * its ASCII equivalent */ + switch (c) { + case K_KPLUS: c = '+'; break; + case K_KMINUS: c = '-'; break; + case K_KDIVIDE: c = '/'; break; + case K_KMULTIPLY: c = '*'; break; + case K_KENTER: c = CAR; break; + case K_KPOINT: + c = '.'; break; + case K_K0: c = '0'; break; + case K_K1: c = '1'; break; + case K_K2: c = '2'; break; + case K_K3: c = '3'; break; + case K_K4: c = '4'; break; + case K_K5: c = '5'; break; + case K_K6: c = '6'; break; + case K_K7: c = '7'; break; + case K_K8: c = '8'; break; + case K_K9: c = '9'; break; + + case K_XHOME: + case K_ZHOME: if (mod_mask == MOD_MASK_SHIFT) { + c = K_S_HOME; + mod_mask = 0; + } else if (mod_mask == MOD_MASK_CTRL) { + c = K_C_HOME; + mod_mask = 0; + } else + c = K_HOME; + break; + case K_XEND: + case K_ZEND: if (mod_mask == MOD_MASK_SHIFT) { + c = K_S_END; + mod_mask = 0; + } else if (mod_mask == MOD_MASK_CTRL) { + c = K_C_END; + mod_mask = 0; + } else + c = K_END; + break; + + case K_XUP: c = K_UP; break; + case K_XDOWN: c = K_DOWN; break; + case K_XLEFT: c = K_LEFT; break; + case K_XRIGHT: c = K_RIGHT; break; + } + + /* For a multi-byte character get all the bytes and return the + * converted character. + * Note: This will loop until enough bytes are received! + */ + if (has_mbyte && (n = MB_BYTE2LEN_CHECK(c)) > 1) { + ++no_mapping; + buf[0] = c; + for (i = 1; i < n; ++i) { + buf[i] = vgetorpeek(TRUE); + if (buf[i] == K_SPECIAL + ) { + /* Must be a K_SPECIAL - KS_SPECIAL - KE_FILLER sequence, + * which represents a K_SPECIAL (0x80), + * or a CSI - KS_EXTRA - KE_CSI sequence, which represents + * a CSI (0x9B), + * of a K_SPECIAL - KS_EXTRA - KE_CSI, which is CSI too. */ + c = vgetorpeek(TRUE); + if (vgetorpeek(TRUE) == (int)KE_CSI && c == KS_EXTRA) + buf[i] = CSI; + } + } + --no_mapping; + c = (*mb_ptr2char)(buf); + } + + break; + } + } + + /* + * In the main loop "may_garbage_collect" can be set to do garbage + * collection in the first next vgetc(). It's disabled after that to + * avoid internally used Lists and Dicts to be freed. + */ + may_garbage_collect = FALSE; + + return c; +} + +/* + * Like vgetc(), but never return a NUL when called recursively, get a key + * directly from the user (ignoring typeahead). + */ +int safe_vgetc(void) +{ + int c; + + c = vgetc(); + if (c == NUL) + c = get_keystroke(); + return c; +} + +/* + * Like safe_vgetc(), but loop to handle K_IGNORE. + * Also ignore scrollbar events. + */ +int plain_vgetc(void) +{ + int c; + + do { + c = safe_vgetc(); + } while (c == K_IGNORE || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR); + return c; +} + +/* + * Check if a character is available, such that vgetc() will not block. + * If the next character is a special character or multi-byte, the returned + * character is not valid!. + */ +int vpeekc(void) +{ + if (old_char != -1) + return old_char; + return vgetorpeek(FALSE); +} + +/* + * Like vpeekc(), but don't allow mapping. Do allow checking for terminal + * codes. + */ +int vpeekc_nomap(void) +{ + int c; + + ++no_mapping; + ++allow_keys; + c = vpeekc(); + --no_mapping; + --allow_keys; + return c; +} + +/* + * Check if any character is available, also half an escape sequence. + * Trick: when no typeahead found, but there is something in the typeahead + * buffer, it must be an ESC that is recognized as the start of a key code. + */ +int vpeekc_any(void) +{ + int c; + + c = vpeekc(); + if (c == NUL && typebuf.tb_len > 0) + c = ESC; + return c; +} + +/* + * Call vpeekc() without causing anything to be mapped. + * Return TRUE if a character is available, FALSE otherwise. + */ +int char_avail(void) +{ + int retval; + + ++no_mapping; + retval = vpeekc(); + --no_mapping; + return retval != NUL; +} + +void +vungetc ( /* unget one character (can only be done once!) */ + int c +) +{ + old_char = c; + old_mod_mask = mod_mask; + old_mouse_row = mouse_row; + old_mouse_col = mouse_col; +} + +/* + * get a character: + * 1. from the stuffbuffer + * This is used for abbreviated commands like "D" -> "d$". + * Also used to redo a command for ".". + * 2. from the typeahead buffer + * Stores text obtained previously but not used yet. + * Also stores the result of mappings. + * Also used for the ":normal" command. + * 3. from the user + * This may do a blocking wait if "advance" is TRUE. + * + * if "advance" is TRUE (vgetc()): + * really get the character. + * KeyTyped is set to TRUE in the case the user typed the key. + * KeyStuffed is TRUE if the character comes from the stuff buffer. + * if "advance" is FALSE (vpeekc()): + * just look whether there is a character available. + * + * When "no_mapping" is zero, checks for mappings in the current mode. + * Only returns one byte (of a multi-byte character). + * K_SPECIAL and CSI may be escaped, need to get two more bytes then. + */ +static int vgetorpeek(int advance) +{ + int c, c1; + int keylen; + char_u *s; + mapblock_T *mp; + mapblock_T *mp2; + mapblock_T *mp_match; + int mp_match_len = 0; + int timedout = FALSE; /* waited for more than 1 second + for mapping to complete */ + int mapdepth = 0; /* check for recursive mapping */ + int mode_deleted = FALSE; /* set when mode has been deleted */ + int local_State; + int mlen; + int max_mlen; + int i; + int new_wcol, new_wrow; + int n; + int nolmaplen; + int old_wcol, old_wrow; + int wait_tb_len; + + /* + * This function doesn't work very well when called recursively. This may + * happen though, because of: + * 1. The call to add_to_showcmd(). char_avail() is then used to check if + * there is a character available, which calls this function. In that + * case we must return NUL, to indicate no character is available. + * 2. A GUI callback function writes to the screen, causing a + * wait_return(). + * Using ":normal" can also do this, but it saves the typeahead buffer, + * thus it should be OK. But don't get a key from the user then. + */ + if (vgetc_busy > 0 + && ex_normal_busy == 0 + ) + return NUL; + + local_State = get_real_state(); + + ++vgetc_busy; + + if (advance) + KeyStuffed = FALSE; + + init_typebuf(); + start_stuff(); + if (advance && typebuf.tb_maplen == 0) + Exec_reg = FALSE; + do { + /* + * get a character: 1. from the stuffbuffer + */ + if (typeahead_char != 0) { + c = typeahead_char; + if (advance) + typeahead_char = 0; + } else { + c = read_readbuffers(advance); + } + if (c != NUL && !got_int) { + if (advance) { + /* KeyTyped = FALSE; When the command that stuffed something + * was typed, behave like the stuffed command was typed. + * needed for CTRL-W CTRl-] to open a fold, for example. */ + KeyStuffed = TRUE; + } + if (typebuf.tb_no_abbr_cnt == 0) + typebuf.tb_no_abbr_cnt = 1; /* no abbreviations now */ + } else { + /* + * Loop until we either find a matching mapped key, or we + * are sure that it is not a mapped key. + * If a mapped key sequence is found we go back to the start to + * try re-mapping. + */ + for (;; ) { + /* + * ui_breakcheck() is slow, don't use it too often when + * inside a mapping. But call it each time for typed + * characters. + */ + if (typebuf.tb_maplen) + line_breakcheck(); + else + ui_breakcheck(); /* check for CTRL-C */ + keylen = 0; + if (got_int) { + /* flush all input */ + c = inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 0L, + typebuf.tb_change_cnt); + /* + * If inchar() returns TRUE (script file was active) or we + * are inside a mapping, get out of insert mode. + * Otherwise we behave like having gotten a CTRL-C. + * As a result typing CTRL-C in insert mode will + * really insert a CTRL-C. + */ + if ((c || typebuf.tb_maplen) + && (State & (INSERT + CMDLINE))) + c = ESC; + else + c = Ctrl_C; + flush_buffers(TRUE); /* flush all typeahead */ + + if (advance) { + /* Also record this character, it might be needed to + * get out of Insert mode. */ + *typebuf.tb_buf = c; + gotchars(typebuf.tb_buf, 1); + } + cmd_silent = FALSE; + + break; + } else if (typebuf.tb_len > 0) { + /* + * Check for a mappable key sequence. + * Walk through one maphash[] list until we find an + * entry that matches. + * + * Don't look for mappings if: + * - no_mapping set: mapping disabled (e.g. for CTRL-V) + * - maphash_valid not set: no mappings present. + * - typebuf.tb_buf[typebuf.tb_off] should not be remapped + * - in insert or cmdline mode and 'paste' option set + * - waiting for "hit return to continue" and CR or SPACE + * typed + * - waiting for a char with --more-- + * - in Ctrl-X mode, and we get a valid char for that mode + */ + mp = NULL; + max_mlen = 0; + c1 = typebuf.tb_buf[typebuf.tb_off]; + if (no_mapping == 0 && maphash_valid + && (no_zero_mapping == 0 || c1 != '0') + && (typebuf.tb_maplen == 0 + || (p_remap + && (typebuf.tb_noremap[typebuf.tb_off] + & (RM_NONE|RM_ABBR)) == 0)) + && !(p_paste && (State & (INSERT + CMDLINE))) + && !(State == HITRETURN && (c1 == CAR || c1 == ' ')) + && State != ASKMORE + && State != CONFIRM + && !((ctrl_x_mode != 0 && vim_is_ctrl_x_key(c1)) + || ((compl_cont_status & CONT_LOCAL) + && (c1 == Ctrl_N || c1 == Ctrl_P))) + ) { + if (c1 == K_SPECIAL) + nolmaplen = 2; + else { + LANGMAP_ADJUST(c1, TRUE); + nolmaplen = 0; + } + /* First try buffer-local mappings. */ + mp = curbuf->b_maphash[MAP_HASH(local_State, c1)]; + mp2 = maphash[MAP_HASH(local_State, c1)]; + if (mp == NULL) { + /* There are no buffer-local mappings. */ + mp = mp2; + mp2 = NULL; + } + /* + * Loop until a partly matching mapping is found or + * all (local) mappings have been checked. + * The longest full match is remembered in "mp_match". + * A full match is only accepted if there is no partly + * match, so "aa" and "aaa" can both be mapped. + */ + mp_match = NULL; + mp_match_len = 0; + for (; mp != NULL; + mp->m_next == NULL ? (mp = mp2, mp2 = NULL) : + (mp = mp->m_next)) { + /* + * Only consider an entry if the first character + * matches and it is for the current state. + * Skip ":lmap" mappings if keys were mapped. + */ + if (mp->m_keys[0] == c1 + && (mp->m_mode & local_State) + && ((mp->m_mode & LANGMAP) == 0 + || typebuf.tb_maplen == 0)) { + int nomap = nolmaplen; + int c2; + /* find the match length of this mapping */ + for (mlen = 1; mlen < typebuf.tb_len; ++mlen) { + c2 = typebuf.tb_buf[typebuf.tb_off + mlen]; + if (nomap > 0) + --nomap; + else if (c2 == K_SPECIAL) + nomap = 2; + else + LANGMAP_ADJUST(c2, TRUE); + if (mp->m_keys[mlen] != c2) + break; + } + + /* Don't allow mapping the first byte(s) of a + * multi-byte char. Happens when mapping + * and then changing 'encoding'. Beware + * that 0x80 is escaped. */ + char_u *p1 = mp->m_keys; + char_u *p2 = mb_unescape(&p1); + + if (has_mbyte && p2 != NULL && MB_BYTE2LEN(c1) > MB_PTR2LEN(p2)) + mlen = 0; + /* + * Check an entry whether it matches. + * - Full match: mlen == keylen + * - Partly match: mlen == typebuf.tb_len + */ + keylen = mp->m_keylen; + if (mlen == keylen + || (mlen == typebuf.tb_len + && typebuf.tb_len < keylen)) { + /* + * If only script-local mappings are + * allowed, check if the mapping starts + * with K_SNR. + */ + s = typebuf.tb_noremap + typebuf.tb_off; + if (*s == RM_SCRIPT + && (mp->m_keys[0] != K_SPECIAL + || mp->m_keys[1] != KS_EXTRA + || mp->m_keys[2] + != (int)KE_SNR)) + continue; + /* + * If one of the typed keys cannot be + * remapped, skip the entry. + */ + for (n = mlen; --n >= 0; ) + if (*s++ & (RM_NONE|RM_ABBR)) + break; + if (n >= 0) + continue; + + if (keylen > typebuf.tb_len) { + if (!timedout && !(mp_match != NULL + && mp_match->m_nowait)) { + /* break at a partly match */ + keylen = KEYLEN_PART_MAP; + break; + } + } else if (keylen > mp_match_len) { + /* found a longer match */ + mp_match = mp; + mp_match_len = keylen; + } + } else + /* No match; may have to check for + * termcode at next character. */ + if (max_mlen < mlen) + max_mlen = mlen; + } + } + + /* If no partly match found, use the longest full + * match. */ + if (keylen != KEYLEN_PART_MAP) { + mp = mp_match; + keylen = mp_match_len; + } + } + + /* Check for match with 'pastetoggle' */ + if (*p_pt != NUL && mp == NULL && (State & (INSERT|NORMAL))) { + for (mlen = 0; mlen < typebuf.tb_len && p_pt[mlen]; + ++mlen) + if (p_pt[mlen] != typebuf.tb_buf[typebuf.tb_off + + mlen]) + break; + if (p_pt[mlen] == NUL) { /* match */ + /* write chars to script file(s) */ + if (mlen > typebuf.tb_maplen) + gotchars(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_maplen, + mlen - typebuf.tb_maplen); + + del_typebuf(mlen, 0); /* remove the chars */ + set_option_value((char_u *)"paste", + (long)!p_paste, NULL, 0); + if (!(State & INSERT)) { + msg_col = 0; + msg_row = Rows - 1; + msg_clr_eos(); /* clear ruler */ + } + status_redraw_all(); + redraw_statuslines(); + showmode(); + setcursor(); + continue; + } + /* Need more chars for partly match. */ + if (mlen == typebuf.tb_len) + keylen = KEYLEN_PART_KEY; + else if (max_mlen < mlen) + /* no match, may have to check for termcode at + * next character */ + max_mlen = mlen + 1; + } + + if ((mp == NULL || max_mlen >= mp_match_len) + && keylen != KEYLEN_PART_MAP) { + int save_keylen = keylen; + + /* + * When no matching mapping found or found a + * non-matching mapping that matches at least what the + * matching mapping matched: + * Check if we have a terminal code, when: + * mapping is allowed, + * keys have not been mapped, + * and not an ESC sequence, not in insert mode or + * p_ek is on, + * and when not timed out, + */ + if ((no_mapping == 0 || allow_keys != 0) + && (typebuf.tb_maplen == 0 + || (p_remap && typebuf.tb_noremap[ + typebuf.tb_off] == RM_YES)) + && !timedout) { + keylen = check_termcode(max_mlen + 1, + NULL, 0, NULL); + + /* If no termcode matched but 'pastetoggle' + * matched partially it's like an incomplete key + * sequence. */ + if (keylen == 0 && save_keylen == KEYLEN_PART_KEY) + keylen = KEYLEN_PART_KEY; + + /* + * When getting a partial match, but the last + * characters were not typed, don't wait for a + * typed character to complete the termcode. + * This helps a lot when a ":normal" command ends + * in an ESC. + */ + if (keylen < 0 + && typebuf.tb_len == typebuf.tb_maplen) + keylen = 0; + } else + keylen = 0; + if (keylen == 0) { /* no matching terminal code */ + /* When there was a matching mapping and no + * termcode could be replaced after another one, + * use that mapping (loop around). If there was + * no mapping use the character from the + * typeahead buffer right here. */ + if (mp == NULL) { + /* + * get a character: 2. from the typeahead buffer + */ + c = typebuf.tb_buf[typebuf.tb_off] & 255; + if (advance) { /* remove chars from tb_buf */ + cmd_silent = (typebuf.tb_silent > 0); + if (typebuf.tb_maplen > 0) + KeyTyped = FALSE; + else { + KeyTyped = TRUE; + /* write char to script file(s) */ + gotchars(typebuf.tb_buf + + typebuf.tb_off, 1); + } + KeyNoremap = typebuf.tb_noremap[ + typebuf.tb_off]; + del_typebuf(1, 0); + } + break; /* got character, break for loop */ + } + } + if (keylen > 0) { /* full matching terminal code */ + continue; /* try mapping again */ + } + + /* Partial match: get some more characters. When a + * matching mapping was found use that one. */ + if (mp == NULL || keylen < 0) + keylen = KEYLEN_PART_KEY; + else + keylen = mp_match_len; + } + + /* complete match */ + if (keylen >= 0 && keylen <= typebuf.tb_len) { + int save_m_expr; + int save_m_noremap; + int save_m_silent; + char_u *save_m_keys; + char_u *save_m_str; + + /* write chars to script file(s) */ + if (keylen > typebuf.tb_maplen) + gotchars(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_maplen, + keylen - typebuf.tb_maplen); + + cmd_silent = (typebuf.tb_silent > 0); + del_typebuf(keylen, 0); /* remove the mapped keys */ + + /* + * Put the replacement string in front of mapstr. + * The depth check catches ":map x y" and ":map y x". + */ + if (++mapdepth >= p_mmd) { + EMSG(_("E223: recursive mapping")); + if (State & CMDLINE) + redrawcmdline(); + else + setcursor(); + flush_buffers(FALSE); + mapdepth = 0; /* for next one */ + c = -1; + break; + } + + /* + * In Select mode and a Visual mode mapping is used: + * Switch to Visual mode temporarily. Append K_SELECT + * to switch back to Select mode. + */ + if (VIsual_active && VIsual_select + && (mp->m_mode & VISUAL)) { + VIsual_select = FALSE; + (void)ins_typebuf(K_SELECT_STRING, REMAP_NONE, + 0, TRUE, FALSE); + } + + /* Copy the values from *mp that are used, because + * evaluating the expression may invoke a function + * that redefines the mapping, thereby making *mp + * invalid. */ + save_m_expr = mp->m_expr; + save_m_noremap = mp->m_noremap; + save_m_silent = mp->m_silent; + save_m_keys = NULL; /* only saved when needed */ + save_m_str = NULL; /* only saved when needed */ + + /* + * Handle ":map ": evaluate the {rhs} as an + * expression. Also save and restore the command line + * for "normal :". + */ + if (mp->m_expr) { + int save_vgetc_busy = vgetc_busy; + + vgetc_busy = 0; + save_m_keys = vim_strsave(mp->m_keys); + save_m_str = vim_strsave(mp->m_str); + s = eval_map_expr(save_m_str, NUL); + vgetc_busy = save_vgetc_busy; + } else + s = mp->m_str; + + /* + * Insert the 'to' part in the typebuf.tb_buf. + * If 'from' field is the same as the start of the + * 'to' field, don't remap the first character (but do + * allow abbreviations). + * If m_noremap is set, don't remap the whole 'to' + * part. + */ + if (s == NULL) + i = FAIL; + else { + int noremap; + + if (save_m_noremap != REMAP_YES) + noremap = save_m_noremap; + else if ( + STRNCMP(s, save_m_keys != NULL + ? save_m_keys : mp->m_keys, + (size_t)keylen) + != 0) + noremap = REMAP_YES; + else + noremap = REMAP_SKIP; + i = ins_typebuf(s, noremap, + 0, TRUE, cmd_silent || save_m_silent); + if (save_m_expr) + free(s); + } + free(save_m_keys); + free(save_m_str); + if (i == FAIL) { + c = -1; + break; + } + continue; + } + } + + /* + * get a character: 3. from the user - handle in Insert mode + */ + /* + * special case: if we get an in insert mode and there + * are no more characters at once, we pretend to go out of + * insert mode. This prevents the one second delay after + * typing an . If we get something after all, we may + * have to redisplay the mode. That the cursor is in the wrong + * place does not matter. + */ + c = 0; + new_wcol = curwin->w_wcol; + new_wrow = curwin->w_wrow; + if ( advance + && typebuf.tb_len == 1 + && typebuf.tb_buf[typebuf.tb_off] == ESC + && !no_mapping + && ex_normal_busy == 0 + && typebuf.tb_maplen == 0 + && (State & INSERT) + && (p_timeout + || (keylen == KEYLEN_PART_KEY && p_ttimeout)) + && (c = inchar(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len, 3, 25L, + typebuf.tb_change_cnt)) == 0) { + colnr_T col = 0, vcol; + char_u *ptr; + + if (mode_displayed) { + unshowmode(TRUE); + mode_deleted = TRUE; + } + validate_cursor(); + old_wcol = curwin->w_wcol; + old_wrow = curwin->w_wrow; + + /* move cursor left, if possible */ + if (curwin->w_cursor.col != 0) { + if (curwin->w_wcol > 0) { + if (did_ai) { + /* + * We are expecting to truncate the trailing + * white-space, so find the last non-white + * character -- webb + */ + col = vcol = curwin->w_wcol = 0; + ptr = ml_get_curline(); + while (col < curwin->w_cursor.col) { + if (!vim_iswhite(ptr[col])) + curwin->w_wcol = vcol; + vcol += lbr_chartabsize(ptr + col, + (colnr_T)vcol); + if (has_mbyte) + col += (*mb_ptr2len)(ptr + col); + else + ++col; + } + curwin->w_wrow = curwin->w_cline_row + + curwin->w_wcol / W_WIDTH(curwin); + curwin->w_wcol %= W_WIDTH(curwin); + curwin->w_wcol += curwin_col_off(); + col = 0; /* no correction needed */ + } else { + --curwin->w_wcol; + col = curwin->w_cursor.col - 1; + } + } else if (curwin->w_p_wrap && curwin->w_wrow) { + --curwin->w_wrow; + curwin->w_wcol = W_WIDTH(curwin) - 1; + col = curwin->w_cursor.col - 1; + } + if (has_mbyte && col > 0 && curwin->w_wcol > 0) { + /* Correct when the cursor is on the right halve + * of a double-wide character. */ + ptr = ml_get_curline(); + col -= (*mb_head_off)(ptr, ptr + col); + if ((*mb_ptr2cells)(ptr + col) > 1) + --curwin->w_wcol; + } + } + setcursor(); + out_flush(); + new_wcol = curwin->w_wcol; + new_wrow = curwin->w_wrow; + curwin->w_wcol = old_wcol; + curwin->w_wrow = old_wrow; + } + if (c < 0) + continue; /* end of input script reached */ + typebuf.tb_len += c; + + /* buffer full, don't map */ + if (typebuf.tb_len >= typebuf.tb_maplen + MAXMAPLEN) { + timedout = TRUE; + continue; + } + + if (ex_normal_busy > 0) { + static int tc = 0; + + /* No typeahead left and inside ":normal". Must return + * something to avoid getting stuck. When an incomplete + * mapping is present, behave like it timed out. */ + if (typebuf.tb_len > 0) { + timedout = TRUE; + continue; + } + /* When 'insertmode' is set, ESC just beeps in Insert + * mode. Use CTRL-L to make edit() return. + * For the command line only CTRL-C always breaks it. + * For the cmdline window: Alternate between ESC and + * CTRL-C: ESC for most situations and CTRL-C to close the + * cmdline window. */ + if (p_im && (State & INSERT)) + c = Ctrl_L; + else if ((State & CMDLINE) + || (cmdwin_type > 0 && tc == ESC) + ) + c = Ctrl_C; + else + c = ESC; + tc = c; + break; + } + + /* + * get a character: 3. from the user - update display + */ + /* In insert mode a screen update is skipped when characters + * are still available. But when those available characters + * are part of a mapping, and we are going to do a blocking + * wait here. Need to update the screen to display the + * changed text so far. Also for when 'lazyredraw' is set and + * redrawing was postponed because there was something in the + * input buffer (e.g., termresponse). */ + if (((State & INSERT) != 0 || p_lz) && (State & CMDLINE) == 0 + && advance && must_redraw != 0 && !need_wait_return) { + update_screen(0); + setcursor(); /* put cursor back where it belongs */ + } + + /* + * If we have a partial match (and are going to wait for more + * input from the user), show the partially matched characters + * to the user with showcmd. + */ + i = 0; + c1 = 0; + if (typebuf.tb_len > 0 && advance && !exmode_active) { + if (((State & (NORMAL | INSERT)) || State == LANGMAP) + && State != HITRETURN) { + /* this looks nice when typing a dead character map */ + if (State & INSERT + && ptr2cells(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len - 1) == 1) { + edit_putchar(typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len - 1], FALSE); + setcursor(); /* put cursor back where it belongs */ + c1 = 1; + } + /* need to use the col and row from above here */ + old_wcol = curwin->w_wcol; + old_wrow = curwin->w_wrow; + curwin->w_wcol = new_wcol; + curwin->w_wrow = new_wrow; + push_showcmd(); + if (typebuf.tb_len > SHOWCMD_COLS) + i = typebuf.tb_len - SHOWCMD_COLS; + while (i < typebuf.tb_len) + (void)add_to_showcmd(typebuf.tb_buf[typebuf.tb_off + + i++]); + curwin->w_wcol = old_wcol; + curwin->w_wrow = old_wrow; + } + + /* this looks nice when typing a dead character map */ + if ((State & CMDLINE) + && cmdline_star == 0 + && ptr2cells(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len - 1) == 1) { + putcmdline(typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len - 1], FALSE); + c1 = 1; + } + } + + /* + * get a character: 3. from the user - get it + */ + wait_tb_len = typebuf.tb_len; + c = inchar(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len, + typebuf.tb_buflen - typebuf.tb_off - typebuf.tb_len - 1, + !advance + ? 0 + : ((typebuf.tb_len == 0 + || !(p_timeout || (p_ttimeout + && keylen == KEYLEN_PART_KEY))) + ? -1L + : ((keylen == KEYLEN_PART_KEY && p_ttm >= 0) + ? p_ttm + : p_tm)), typebuf.tb_change_cnt); + + if (i != 0) + pop_showcmd(); + if (c1 == 1) { + if (State & INSERT) + edit_unputchar(); + if (State & CMDLINE) + unputcmdline(); + else + setcursor(); /* put cursor back where it belongs */ + } + + if (c < 0) + continue; /* end of input script reached */ + if (c == NUL) { /* no character available */ + if (!advance) + break; + if (wait_tb_len > 0) { /* timed out */ + timedout = TRUE; + continue; + } + } else { /* allow mapping for just typed characters */ + while (typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len] != NUL) + typebuf.tb_noremap[typebuf.tb_off + + typebuf.tb_len++] = RM_YES; +#ifdef USE_IM_CONTROL + /* Get IM status right after getting keys, not after the + * timeout for a mapping (focus may be lost by then). */ + vgetc_im_active = im_get_status(); +#endif + } + } /* for (;;) */ + } /* if (!character from stuffbuf) */ + + /* if advance is FALSE don't loop on NULs */ + } while (c < 0 || (advance && c == NUL)); + + /* + * The "INSERT" message is taken care of here: + * if we return an ESC to exit insert mode, the message is deleted + * if we don't return an ESC but deleted the message before, redisplay it + */ + if (advance && p_smd && msg_silent == 0 && (State & INSERT)) { + if (c == ESC && !mode_deleted && !no_mapping && mode_displayed) { + if (typebuf.tb_len && !KeyTyped) + redraw_cmdline = TRUE; /* delete mode later */ + else + unshowmode(FALSE); + } else if (c != ESC && mode_deleted) { + if (typebuf.tb_len && !KeyTyped) + redraw_cmdline = TRUE; /* show mode later */ + else + showmode(); + } + } + + --vgetc_busy; + + return c; +} + +/* + * inchar() - get one character from + * 1. a scriptfile + * 2. the keyboard + * + * As much characters as we can get (upto 'maxlen') are put in "buf" and + * NUL terminated (buffer length must be 'maxlen' + 1). + * Minimum for "maxlen" is 3!!!! + * + * "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into + * it. When typebuf.tb_change_cnt changes (e.g., when a message is received + * from a remote client) "buf" can no longer be used. "tb_change_cnt" is 0 + * otherwise. + * + * If we got an interrupt all input is read until none is available. + * + * If wait_time == 0 there is no waiting for the char. + * If wait_time == n we wait for n msec for a character to arrive. + * If wait_time == -1 we wait forever for a character to arrive. + * + * Return the number of obtained characters. + * Return -1 when end of input script reached. + */ +int +inchar ( + char_u *buf, + int maxlen, + long wait_time, /* milli seconds */ + int tb_change_cnt +) +{ + int len = 0; /* init for GCC */ + int retesc = FALSE; /* return ESC with gotint */ + int script_char; + + if (wait_time == -1L || wait_time > 100L) { /* flush output before waiting */ + cursor_on(); + out_flush(); + } + + /* + * Don't reset these when at the hit-return prompt, otherwise a endless + * recursive loop may result (write error in swapfile, hit-return, timeout + * on char wait, flush swapfile, write error....). + */ + if (State != HITRETURN) { + did_outofmem_msg = FALSE; /* display out of memory message (again) */ + did_swapwrite_msg = FALSE; /* display swap file write error again */ + } + undo_off = FALSE; /* restart undo now */ + + /* + * Get a character from a script file if there is one. + * If interrupted: Stop reading script files, close them all. + */ + script_char = -1; + while (scriptin[curscript] != NULL && script_char < 0 + && !ignore_script + ) { + + + if (got_int || (script_char = getc(scriptin[curscript])) < 0) { + /* Reached EOF. + * Careful: closescript() frees typebuf.tb_buf[] and buf[] may + * point inside typebuf.tb_buf[]. Don't use buf[] after this! */ + closescript(); + /* + * When reading script file is interrupted, return an ESC to get + * back to normal mode. + * Otherwise return -1, because typebuf.tb_buf[] has changed. + */ + if (got_int) + retesc = TRUE; + else + return -1; + } else { + buf[0] = script_char; + len = 1; + } + } + + if (script_char < 0) { /* did not get a character from script */ + /* + * If we got an interrupt, skip all previously typed characters and + * return TRUE if quit reading script file. + * Stop reading typeahead when a single CTRL-C was read, + * fill_input_buf() returns this when not able to read from stdin. + * Don't use buf[] here, closescript() may have freed typebuf.tb_buf[] + * and buf may be pointing inside typebuf.tb_buf[]. + */ + if (got_int) { +#define DUM_LEN MAXMAPLEN * 3 + 3 + char_u dum[DUM_LEN + 1]; + + for (;; ) { + len = ui_inchar(dum, DUM_LEN, 0L, 0); + if (len == 0 || (len == 1 && dum[0] == 3)) + break; + } + return retesc; + } + + /* + * Always flush the output characters when getting input characters + * from the user. + */ + out_flush(); + + /* + * Fill up to a third of the buffer, because each character may be + * tripled below. + */ + len = ui_inchar(buf, maxlen / 3, wait_time, tb_change_cnt); + } + + if (typebuf_changed(tb_change_cnt)) + return 0; + + return fix_input_buffer(buf, len, script_char >= 0); +} + +/* + * Fix typed characters for use by vgetc() and check_termcode(). + * buf[] must have room to triple the number of bytes! + * Returns the new length. + */ +int +fix_input_buffer ( + char_u *buf, + int len, + int script /* TRUE when reading from a script */ +) +{ + int i; + char_u *p = buf; + + /* + * Two characters are special: NUL and K_SPECIAL. + * When compiled With the GUI CSI is also special. + * Replace NUL by K_SPECIAL KS_ZERO KE_FILLER + * Replace K_SPECIAL by K_SPECIAL KS_SPECIAL KE_FILLER + * Replace CSI by K_SPECIAL KS_EXTRA KE_CSI + * Don't replace K_SPECIAL when reading a script file. + */ + for (i = len; --i >= 0; ++p) { + if (p[0] == NUL + || (p[0] == K_SPECIAL + && !script + && (i < 2 || p[1] != KS_EXTRA || is_user_input(p[2])))) { + memmove(p + 3, p + 1, (size_t)i); + p[2] = K_THIRD(p[0]); + p[1] = K_SECOND(p[0]); + p[0] = K_SPECIAL; + p += 2; + len += 2; + } + } + *p = NUL; /* add trailing NUL */ + return len; +} + +#if defined(USE_INPUT_BUF) || defined(PROTO) +/* + * Return TRUE when bytes are in the input buffer or in the typeahead buffer. + * Normally the input buffer would be sufficient, but feedkeys() may insert + * characters in the typeahead buffer while we are waiting for input to arrive. + */ +int input_available(void) +{ + return !vim_is_input_buf_empty() + || typebuf_was_filled + ; +} + +#endif + +/* + * map[!] : show all key mappings + * map[!] {lhs} : show key mapping for {lhs} + * map[!] {lhs} {rhs} : set key mapping for {lhs} to {rhs} + * noremap[!] {lhs} {rhs} : same, but no remapping for {rhs} + * unmap[!] {lhs} : remove key mapping for {lhs} + * abbr : show all abbreviations + * abbr {lhs} : show abbreviations for {lhs} + * abbr {lhs} {rhs} : set abbreviation for {lhs} to {rhs} + * noreabbr {lhs} {rhs} : same, but no remapping for {rhs} + * unabbr {lhs} : remove abbreviation for {lhs} + * + * maptype: 0 for :map, 1 for :unmap, 2 for noremap. + * + * arg is pointer to any arguments. Note: arg cannot be a read-only string, + * it will be modified. + * + * for :map mode is NORMAL + VISUAL + SELECTMODE + OP_PENDING + * for :map! mode is INSERT + CMDLINE + * for :cmap mode is CMDLINE + * for :imap mode is INSERT + * for :lmap mode is LANGMAP + * for :nmap mode is NORMAL + * for :vmap mode is VISUAL + SELECTMODE + * for :xmap mode is VISUAL + * for :smap mode is SELECTMODE + * for :omap mode is OP_PENDING + * + * for :abbr mode is INSERT + CMDLINE + * for :iabbr mode is INSERT + * for :cabbr mode is CMDLINE + * + * Return 0 for success + * 1 for invalid arguments + * 2 for no match + * 4 for out of mem + * 5 for entry not unique + */ +int +do_map ( + int maptype, + char_u *arg, + int mode, + int abbrev /* not a mapping but an abbreviation */ +) +{ + char_u *keys; + mapblock_T *mp, **mpp; + char_u *rhs; + char_u *p; + int n; + int len = 0; /* init for GCC */ + char_u *newstr; + int hasarg; + int haskey; + int did_it = FALSE; + int did_local = FALSE; + int round; + char_u *keys_buf = NULL; + char_u *arg_buf = NULL; + int retval = 0; + int do_backslash; + int hash; + int new_hash; + mapblock_T **abbr_table; + mapblock_T **map_table; + int unique = FALSE; + int nowait = FALSE; + int silent = FALSE; + int special = FALSE; + int expr = FALSE; + int noremap; + char_u *orig_rhs; + + keys = arg; + map_table = maphash; + abbr_table = &first_abbr; + + /* For ":noremap" don't remap, otherwise do remap. */ + if (maptype == 2) + noremap = REMAP_NONE; + else + noremap = REMAP_YES; + + /* Accept , , ,