diff options
Diffstat (limited to 'src/nvim/ex_getln.c')
| -rw-r--r-- | src/nvim/ex_getln.c | 5443 |
1 files changed, 5443 insertions, 0 deletions
diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c new file mode 100644 index 0000000000..8e2d7cc9ae --- /dev/null +++ b/src/nvim/ex_getln.c @@ -0,0 +1,5443 @@ +/* + * 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. + */ + +/* + * ex_getln.c: Functions for entering and editing an Ex command line. + */ + +#include <string.h> +#include <stdlib.h> + +#include "vim.h" +#include "arabic.h" +#include "ex_getln.h" +#include "buffer.h" +#include "charset.h" +#include "digraph.h" +#include "edit.h" +#include "eval.h" +#include "ex_cmds.h" +#include "ex_cmds2.h" +#include "ex_docmd.h" +#include "ex_eval.h" +#include "farsi.h" +#include "fileio.h" +#include "getchar.h" +#include "if_cscope.h" +#include "indent.h" +#include "main.h" +#include "mbyte.h" +#include "memline.h" +#include "menu.h" +#include "message.h" +#include "misc1.h" +#include "misc2.h" +#include "memory.h" +#include "cursor_shape.h" +#include "keymap.h" +#include "garray.h" +#include "move.h" +#include "ops.h" +#include "option.h" +#include "os_unix.h" +#include "path.h" +#include "regexp.h" +#include "screen.h" +#include "search.h" +#include "syntax.h" +#include "tag.h" +#include "term.h" +#include "window.h" +#include "ui.h" +#include "os/os.h" +#include "os/event.h" + +/* + * Variables shared between getcmdline(), redrawcmdline() and others. + * These need to be saved when using CTRL-R |, that's why they are in a + * structure. + */ +struct cmdline_info { + char_u *cmdbuff; /* pointer to command line buffer */ + int cmdbufflen; /* length of cmdbuff */ + int cmdlen; /* number of chars in command line */ + int cmdpos; /* current cursor position */ + int cmdspos; /* cursor column on screen */ + int cmdfirstc; /* ':', '/', '?', '=', '>' or NUL */ + int cmdindent; /* number of spaces before cmdline */ + char_u *cmdprompt; /* message in front of cmdline */ + int cmdattr; /* attributes for prompt */ + int overstrike; /* Typing mode on the command line. Shared by + getcmdline() and put_on_cmdline(). */ + expand_T *xpc; /* struct being used for expansion, xp_pattern + may point into cmdbuff */ + int xp_context; /* type of expansion */ + char_u *xp_arg; /* user-defined expansion arg */ + int input_fn; /* when TRUE Invoked for input() function */ +}; + +/* The current cmdline_info. It is initialized in getcmdline() and after that + * used by other functions. When invoking getcmdline() recursively it needs + * to be saved with save_cmdline() and restored with restore_cmdline(). + * TODO: make it local to getcmdline() and pass it around. */ +static struct cmdline_info ccline; + +static int cmd_showtail; /* Only show path tail in lists ? */ + +static int new_cmdpos; /* position set by set_cmdline_pos() */ + +typedef struct hist_entry { + int hisnum; /* identifying number */ + int viminfo; /* when TRUE hisstr comes from viminfo */ + char_u *hisstr; /* actual entry, separator char after the NUL */ +} histentry_T; + +static histentry_T *(history[HIST_COUNT]) = {NULL, NULL, NULL, NULL, NULL}; +static int hisidx[HIST_COUNT] = {-1, -1, -1, -1, -1}; /* lastused entry */ +static int hisnum[HIST_COUNT] = {0, 0, 0, 0, 0}; +/* identifying (unique) number of newest history entry */ +static int hislen = 0; /* actual length of history tables */ + +static int hist_char2type(int c); + +static int in_history(int, char_u *, int, int, int); +static int calc_hist_idx(int histype, int num); + +static int cmd_hkmap = 0; /* Hebrew mapping during command line */ + +static int cmd_fkmap = 0; /* Farsi mapping during command line */ + +static int cmdline_charsize(int idx); +static void set_cmdspos(void); +static void set_cmdspos_cursor(void); +static void correct_cmdspos(int idx, int cells); +static void alloc_cmdbuff(int len); +static int realloc_cmdbuff(int len); +static void draw_cmdline(int start, int len); +static void save_cmdline(struct cmdline_info *ccp); +static void restore_cmdline(struct cmdline_info *ccp); +static int cmdline_paste(int regname, int literally, int remcr); +static void cmdline_del(int from); +static void redrawcmdprompt(void); +static void cursorcmd(void); +static int ccheck_abbr(int); +static int nextwild(expand_T *xp, int type, int options, int escape); +static void escape_fname(char_u **pp); +static int showmatches(expand_T *xp, int wildmenu); +static void set_expand_context(expand_T *xp); +static int ExpandFromContext(expand_T *xp, char_u *, int *, char_u ***, int); +static int expand_showtail(expand_T *xp); +static int expand_shellcmd(char_u *filepat, int *num_file, + char_u ***file, + int flagsarg); +static int ExpandRTDir(char_u *pat, int *num_file, char_u ***file, + char *dirname[]); +static char_u *get_history_arg(expand_T *xp, int idx); +static int ExpandUserDefined(expand_T *xp, regmatch_T *regmatch, + int *num_file, + char_u ***file); +static int ExpandUserList(expand_T *xp, int *num_file, char_u ***file); +static void clear_hist_entry(histentry_T *hisptr); + +static int ex_window(void); + +static int sort_func_compare(const void *s1, const void *s2); + +/* + * getcmdline() - accept a command line starting with firstc. + * + * firstc == ':' get ":" command line. + * firstc == '/' or '?' get search pattern + * firstc == '=' get expression + * firstc == '@' get text for input() function + * firstc == '>' get text for debug mode + * firstc == NUL get text for :insert command + * firstc == -1 like NUL, and break on CTRL-C + * + * The line is collected in ccline.cmdbuff, which is reallocated to fit the + * command line. + * + * Careful: getcmdline() can be called recursively! + * + * Return pointer to allocated string if there is a commandline, NULL + * otherwise. + */ +char_u * +getcmdline ( + int firstc, + long count, /* only used for incremental search */ + int indent /* indent for inside conditionals */ +) +{ + int c; + int i; + int j; + int gotesc = FALSE; /* TRUE when <ESC> just typed */ + int do_abbr; /* when TRUE check for abbr. */ + char_u *lookfor = NULL; /* string to match */ + int hiscnt; /* current history line in use */ + int histype; /* history type to be used */ + pos_T old_cursor; + colnr_T old_curswant; + colnr_T old_leftcol; + linenr_T old_topline; + int old_topfill; + linenr_T old_botline; + int did_incsearch = FALSE; + int incsearch_postponed = FALSE; + int did_wild_list = FALSE; /* did wild_list() recently */ + int wim_index = 0; /* index in wim_flags[] */ + int res; + int save_msg_scroll = msg_scroll; + int save_State = State; /* remember State when called */ + int some_key_typed = FALSE; /* one of the keys was typed */ + /* mouse drag and release events are ignored, unless they are + * preceded with a mouse down event */ + int ignore_drag_release = TRUE; + int break_ctrl_c = FALSE; + expand_T xpc; + long *b_im_ptr = NULL; + /* Everything that may work recursively should save and restore the + * current command line in save_ccline. That includes update_screen(), a + * custom status line may invoke ":normal". */ + struct cmdline_info save_ccline; + + if (firstc == -1) { + firstc = NUL; + break_ctrl_c = TRUE; + } + /* start without Hebrew mapping for a command line */ + if (firstc == ':' || firstc == '=' || firstc == '>') + cmd_hkmap = 0; + + ccline.overstrike = FALSE; /* always start in insert mode */ + old_cursor = curwin->w_cursor; /* needs to be restored later */ + old_curswant = curwin->w_curswant; + old_leftcol = curwin->w_leftcol; + old_topline = curwin->w_topline; + old_topfill = curwin->w_topfill; + old_botline = curwin->w_botline; + + /* + * set some variables for redrawcmd() + */ + ccline.cmdfirstc = (firstc == '@' ? 0 : firstc); + ccline.cmdindent = (firstc > 0 ? indent : 0); + + /* alloc initial ccline.cmdbuff */ + alloc_cmdbuff(exmode_active ? 250 : indent + 1); + if (ccline.cmdbuff == NULL) + return NULL; /* out of memory */ + ccline.cmdlen = ccline.cmdpos = 0; + ccline.cmdbuff[0] = NUL; + + /* autoindent for :insert and :append */ + if (firstc <= 0) { + copy_spaces(ccline.cmdbuff, indent); + ccline.cmdbuff[indent] = NUL; + ccline.cmdpos = indent; + ccline.cmdspos = indent; + ccline.cmdlen = indent; + } + + ExpandInit(&xpc); + ccline.xpc = &xpc; + + if (curwin->w_p_rl && *curwin->w_p_rlc == 's' + && (firstc == '/' || firstc == '?')) + cmdmsg_rl = TRUE; + else + cmdmsg_rl = FALSE; + + redir_off = TRUE; /* don't redirect the typed command */ + if (!cmd_silent) { + i = msg_scrolled; + msg_scrolled = 0; /* avoid wait_return message */ + gotocmdline(TRUE); + msg_scrolled += i; + redrawcmdprompt(); /* draw prompt or indent */ + set_cmdspos(); + } + xpc.xp_context = EXPAND_NOTHING; + xpc.xp_backslash = XP_BS_NONE; +#ifndef BACKSLASH_IN_FILENAME + xpc.xp_shell = FALSE; +#endif + + if (ccline.input_fn) { + xpc.xp_context = ccline.xp_context; + xpc.xp_pattern = ccline.cmdbuff; + xpc.xp_arg = ccline.xp_arg; + } + + /* + * Avoid scrolling when called by a recursive do_cmdline(), e.g. when + * doing ":@0" when register 0 doesn't contain a CR. + */ + msg_scroll = FALSE; + + State = CMDLINE; + + if (firstc == '/' || firstc == '?' || firstc == '@') { + /* Use ":lmap" mappings for search pattern and input(). */ + if (curbuf->b_p_imsearch == B_IMODE_USE_INSERT) + b_im_ptr = &curbuf->b_p_iminsert; + else + b_im_ptr = &curbuf->b_p_imsearch; + if (*b_im_ptr == B_IMODE_LMAP) + State |= LANGMAP; +#ifdef USE_IM_CONTROL + im_set_active(*b_im_ptr == B_IMODE_IM); +#endif + } +#ifdef USE_IM_CONTROL + else if (p_imcmdline) + im_set_active(TRUE); +#endif + + setmouse(); + ui_cursor_shape(); /* may show different cursor shape */ + + /* When inside an autocommand for writing "exiting" may be set and + * terminal mode set to cooked. Need to set raw mode here then. */ + settmode(TMODE_RAW); + + init_history(); + hiscnt = hislen; /* set hiscnt to impossible history value */ + histype = hist_char2type(firstc); + + do_digraph(-1); /* init digraph typeahead */ + + /* + * Collect the command string, handling editing keys. + */ + for (;; ) { + redir_off = TRUE; /* Don't redirect the typed command. + Repeated, because a ":redir" inside + completion may switch it on. */ +#ifdef USE_ON_FLY_SCROLL + dont_scroll = FALSE; /* allow scrolling here */ +#endif + quit_more = FALSE; /* reset after CTRL-D which had a more-prompt */ + + cursorcmd(); /* set the cursor on the right spot */ + + /* Get a character. Ignore K_IGNORE, it should not do anything, such + * as stop completion. */ + do { + c = safe_vgetc(); + } while (c == K_IGNORE); + + if (KeyTyped) { + some_key_typed = TRUE; + if (cmd_hkmap) + c = hkmap(c); + if (cmd_fkmap) + c = cmdl_fkmap(c); + if (cmdmsg_rl && !KeyStuffed) { + /* Invert horizontal movements and operations. Only when + * typed by the user directly, not when the result of a + * mapping. */ + switch (c) { + case K_RIGHT: c = K_LEFT; break; + case K_S_RIGHT: c = K_S_LEFT; break; + case K_C_RIGHT: c = K_C_LEFT; break; + case K_LEFT: c = K_RIGHT; break; + case K_S_LEFT: c = K_S_RIGHT; break; + case K_C_LEFT: c = K_C_RIGHT; break; + } + } + } + + /* + * Ignore got_int when CTRL-C was typed here. + * Don't ignore it in :global, we really need to break then, e.g., for + * ":g/pat/normal /pat" (without the <CR>). + * Don't ignore it for the input() function. + */ + if ((c == Ctrl_C +#ifdef UNIX + || c == intr_char +#endif + ) + && firstc != '@' + && !break_ctrl_c + && !global_busy) + got_int = FALSE; + + /* free old command line when finished moving around in the history + * list */ + if (lookfor != NULL + && c != K_S_DOWN && c != K_S_UP + && c != K_DOWN && c != K_UP + && c != K_PAGEDOWN && c != K_PAGEUP + && c != K_KPAGEDOWN && c != K_KPAGEUP + && c != K_LEFT && c != K_RIGHT + && (xpc.xp_numfiles > 0 || (c != Ctrl_P && c != Ctrl_N))) { + free(lookfor); + lookfor = NULL; + } + + /* + * When there are matching completions to select <S-Tab> works like + * CTRL-P (unless 'wc' is <S-Tab>). + */ + if (c != p_wc && c == K_S_TAB && xpc.xp_numfiles > 0) + c = Ctrl_P; + + /* Special translations for 'wildmenu' */ + if (did_wild_list && p_wmnu) { + if (c == K_LEFT) + c = Ctrl_P; + else if (c == K_RIGHT) + c = Ctrl_N; + } + /* Hitting CR after "emenu Name.": complete submenu */ + if (xpc.xp_context == EXPAND_MENUNAMES && p_wmnu + && ccline.cmdpos > 1 + && ccline.cmdbuff[ccline.cmdpos - 1] == '.' + && ccline.cmdbuff[ccline.cmdpos - 2] != '\\' + && (c == '\n' || c == '\r' || c == K_KENTER)) + c = K_DOWN; + + /* free expanded names when finished walking through matches */ + if (xpc.xp_numfiles != -1 + && !(c == p_wc && KeyTyped) && c != p_wcm + && c != Ctrl_N && c != Ctrl_P && c != Ctrl_A + && c != Ctrl_L) { + (void)ExpandOne(&xpc, NULL, NULL, 0, WILD_FREE); + did_wild_list = FALSE; + if (!p_wmnu || (c != K_UP && c != K_DOWN)) + xpc.xp_context = EXPAND_NOTHING; + wim_index = 0; + if (p_wmnu && wild_menu_showing != 0) { + int skt = KeyTyped; + int old_RedrawingDisabled = RedrawingDisabled; + + if (ccline.input_fn) + RedrawingDisabled = 0; + + if (wild_menu_showing == WM_SCROLLED) { + /* Entered command line, move it up */ + cmdline_row--; + redrawcmd(); + } else if (save_p_ls != -1) { + /* restore 'laststatus' and 'winminheight' */ + p_ls = save_p_ls; + p_wmh = save_p_wmh; + last_status(FALSE); + save_cmdline(&save_ccline); + update_screen(VALID); /* redraw the screen NOW */ + restore_cmdline(&save_ccline); + redrawcmd(); + save_p_ls = -1; + } else { + win_redraw_last_status(topframe); + redraw_statuslines(); + } + KeyTyped = skt; + wild_menu_showing = 0; + if (ccline.input_fn) + RedrawingDisabled = old_RedrawingDisabled; + } + } + + /* Special translations for 'wildmenu' */ + if (xpc.xp_context == EXPAND_MENUNAMES && p_wmnu) { + /* Hitting <Down> after "emenu Name.": complete submenu */ + if (c == K_DOWN && ccline.cmdpos > 0 + && ccline.cmdbuff[ccline.cmdpos - 1] == '.') + c = p_wc; + else if (c == K_UP) { + /* Hitting <Up>: Remove one submenu name in front of the + * cursor */ + int found = FALSE; + + j = (int)(xpc.xp_pattern - ccline.cmdbuff); + i = 0; + while (--j > 0) { + /* check for start of menu name */ + if (ccline.cmdbuff[j] == ' ' + && ccline.cmdbuff[j - 1] != '\\') { + i = j + 1; + break; + } + /* check for start of submenu name */ + if (ccline.cmdbuff[j] == '.' + && ccline.cmdbuff[j - 1] != '\\') { + if (found) { + i = j + 1; + break; + } else + found = TRUE; + } + } + if (i > 0) + cmdline_del(i); + c = p_wc; + xpc.xp_context = EXPAND_NOTHING; + } + } + if ((xpc.xp_context == EXPAND_FILES + || xpc.xp_context == EXPAND_DIRECTORIES + || xpc.xp_context == EXPAND_SHELLCMD) && p_wmnu) { + char_u upseg[5]; + + upseg[0] = PATHSEP; + upseg[1] = '.'; + upseg[2] = '.'; + upseg[3] = PATHSEP; + upseg[4] = NUL; + + if (c == K_DOWN + && ccline.cmdpos > 0 + && ccline.cmdbuff[ccline.cmdpos - 1] == PATHSEP + && (ccline.cmdpos < 3 + || ccline.cmdbuff[ccline.cmdpos - 2] != '.' + || ccline.cmdbuff[ccline.cmdpos - 3] != '.')) { + /* go down a directory */ + c = p_wc; + } else if (STRNCMP(xpc.xp_pattern, upseg + 1, 3) == 0 && c == K_DOWN) { + /* If in a direct ancestor, strip off one ../ to go down */ + int found = FALSE; + + j = ccline.cmdpos; + i = (int)(xpc.xp_pattern - ccline.cmdbuff); + while (--j > i) { + if (has_mbyte) + j -= (*mb_head_off)(ccline.cmdbuff, ccline.cmdbuff + j); + if (vim_ispathsep(ccline.cmdbuff[j])) { + found = TRUE; + break; + } + } + if (found + && ccline.cmdbuff[j - 1] == '.' + && ccline.cmdbuff[j - 2] == '.' + && (vim_ispathsep(ccline.cmdbuff[j - 3]) || j == i + 2)) { + cmdline_del(j - 2); + c = p_wc; + } + } else if (c == K_UP) { + /* go up a directory */ + int found = FALSE; + + j = ccline.cmdpos - 1; + i = (int)(xpc.xp_pattern - ccline.cmdbuff); + while (--j > i) { + if (has_mbyte) + j -= (*mb_head_off)(ccline.cmdbuff, ccline.cmdbuff + j); + if (vim_ispathsep(ccline.cmdbuff[j]) +#ifdef BACKSLASH_IN_FILENAME + && vim_strchr(" *?[{`$%#", ccline.cmdbuff[j + 1]) + == NULL +#endif + ) { + if (found) { + i = j + 1; + break; + } else + found = TRUE; + } + } + + if (!found) + j = i; + else if (STRNCMP(ccline.cmdbuff + j, upseg, 4) == 0) + j += 4; + else if (STRNCMP(ccline.cmdbuff + j, upseg + 1, 3) == 0 + && j == i) + j += 3; + else + j = 0; + if (j > 0) { + /* TODO this is only for DOS/UNIX systems - need to put in + * machine-specific stuff here and in upseg init */ + cmdline_del(j); + put_on_cmdline(upseg + 1, 3, FALSE); + } else if (ccline.cmdpos > i) + cmdline_del(i); + + /* Now complete in the new directory. Set KeyTyped in case the + * Up key came from a mapping. */ + c = p_wc; + KeyTyped = TRUE; + } + } + + + /* CTRL-\ CTRL-N goes to Normal mode, CTRL-\ CTRL-G goes to Insert + * mode when 'insertmode' is set, CTRL-\ e prompts for an expression. */ + if (c == Ctrl_BSL) { + ++no_mapping; + ++allow_keys; + c = plain_vgetc(); + --no_mapping; + --allow_keys; + /* CTRL-\ e doesn't work when obtaining an expression, unless it + * is in a mapping. */ + if (c != Ctrl_N && c != Ctrl_G && (c != 'e' + || (ccline.cmdfirstc == '=' && + KeyTyped))) { + vungetc(c); + c = Ctrl_BSL; + } else if (c == 'e') { + char_u *p = NULL; + int len; + + /* + * Replace the command line with the result of an expression. + * Need to save and restore the current command line, to be + * able to enter a new one... + */ + if (ccline.cmdpos == ccline.cmdlen) + new_cmdpos = 99999; /* keep it at the end */ + else + new_cmdpos = ccline.cmdpos; + + save_cmdline(&save_ccline); + c = get_expr_register(); + restore_cmdline(&save_ccline); + if (c == '=') { + /* Need to save and restore ccline. And set "textlock" + * to avoid nasty things like going to another buffer when + * evaluating an expression. */ + save_cmdline(&save_ccline); + ++textlock; + p = get_expr_line(); + --textlock; + restore_cmdline(&save_ccline); + + if (p != NULL) { + len = (int)STRLEN(p); + if (realloc_cmdbuff(len + 1) == OK) { + ccline.cmdlen = len; + STRCPY(ccline.cmdbuff, p); + free(p); + + /* Restore the cursor or use the position set with + * set_cmdline_pos(). */ + if (new_cmdpos > ccline.cmdlen) + ccline.cmdpos = ccline.cmdlen; + else + ccline.cmdpos = new_cmdpos; + + KeyTyped = FALSE; /* Don't do p_wc completion. */ + redrawcmd(); + goto cmdline_changed; + } + } + } + beep_flush(); + got_int = FALSE; /* don't abandon the command line */ + did_emsg = FALSE; + emsg_on_display = FALSE; + redrawcmd(); + goto cmdline_not_changed; + } else { + if (c == Ctrl_G && p_im && restart_edit == 0) + restart_edit = 'a'; + gotesc = TRUE; /* will free ccline.cmdbuff after putting it + in history */ + goto returncmd; /* back to Normal mode */ + } + } + + if (c == cedit_key || c == K_CMDWIN) { + /* + * Open a window to edit the command line (and history). + */ + c = ex_window(); + some_key_typed = TRUE; + } else + c = do_digraph(c); + + if (c == '\n' || c == '\r' || c == K_KENTER || (c == ESC + && (!KeyTyped || + vim_strchr(p_cpo, + CPO_ESC) != + NULL))) { + /* In Ex mode a backslash escapes a newline. */ + if (exmode_active + && c != ESC + && ccline.cmdpos == ccline.cmdlen + && ccline.cmdpos > 0 + && ccline.cmdbuff[ccline.cmdpos - 1] == '\\') { + if (c == K_KENTER) + c = '\n'; + } else { + gotesc = FALSE; /* Might have typed ESC previously, don't + truncate the cmdline now. */ + if (ccheck_abbr(c + ABBR_OFF)) + goto cmdline_changed; + if (!cmd_silent) { + windgoto(msg_row, 0); + out_flush(); + } + break; + } + } + + /* + * Completion for 'wildchar' or 'wildcharm' key. + * - hitting <ESC> twice means: abandon command line. + * - wildcard expansion is only done when the 'wildchar' key is really + * typed, not when it comes from a macro + */ + if ((c == p_wc && !gotesc && KeyTyped) || c == p_wcm) { + if (xpc.xp_numfiles > 0) { /* typed p_wc at least twice */ + /* if 'wildmode' contains "list" may still need to list */ + if (xpc.xp_numfiles > 1 + && !did_wild_list + && (wim_flags[wim_index] & WIM_LIST)) { + (void)showmatches(&xpc, FALSE); + redrawcmd(); + did_wild_list = TRUE; + } + if (wim_flags[wim_index] & WIM_LONGEST) + res = nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP, + firstc != '@'); + else if (wim_flags[wim_index] & WIM_FULL) + res = nextwild(&xpc, WILD_NEXT, WILD_NO_BEEP, + firstc != '@'); + else + res = OK; /* don't insert 'wildchar' now */ + } else { /* typed p_wc first time */ + wim_index = 0; + j = ccline.cmdpos; + /* if 'wildmode' first contains "longest", get longest + * common part */ + if (wim_flags[0] & WIM_LONGEST) + res = nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP, + firstc != '@'); + else + res = nextwild(&xpc, WILD_EXPAND_KEEP, WILD_NO_BEEP, + firstc != '@'); + + /* if interrupted while completing, behave like it failed */ + if (got_int) { + (void)vpeekc(); /* remove <C-C> from input stream */ + got_int = FALSE; /* don't abandon the command line */ + (void)ExpandOne(&xpc, NULL, NULL, 0, WILD_FREE); + xpc.xp_context = EXPAND_NOTHING; + goto cmdline_changed; + } + + /* when more than one match, and 'wildmode' first contains + * "list", or no change and 'wildmode' contains "longest,list", + * list all matches */ + if (res == OK && xpc.xp_numfiles > 1) { + /* a "longest" that didn't do anything is skipped (but not + * "list:longest") */ + if (wim_flags[0] == WIM_LONGEST && ccline.cmdpos == j) + wim_index = 1; + if ((wim_flags[wim_index] & WIM_LIST) + || (p_wmnu && (wim_flags[wim_index] & WIM_FULL) != 0) + ) { + if (!(wim_flags[0] & WIM_LONGEST)) { + int p_wmnu_save = p_wmnu; + p_wmnu = 0; + /* remove match */ + nextwild(&xpc, WILD_PREV, 0, firstc != '@'); + p_wmnu = p_wmnu_save; + } + (void)showmatches(&xpc, p_wmnu + && ((wim_flags[wim_index] & WIM_LIST) == 0)); + redrawcmd(); + did_wild_list = TRUE; + if (wim_flags[wim_index] & WIM_LONGEST) + nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP, + firstc != '@'); + else if (wim_flags[wim_index] & WIM_FULL) + nextwild(&xpc, WILD_NEXT, WILD_NO_BEEP, + firstc != '@'); + } else + vim_beep(); + } else if (xpc.xp_numfiles == -1) + xpc.xp_context = EXPAND_NOTHING; + } + if (wim_index < 3) + ++wim_index; + if (c == ESC) + gotesc = TRUE; + if (res == OK) + goto cmdline_changed; + } + + gotesc = FALSE; + + /* <S-Tab> goes to last match, in a clumsy way */ + if (c == K_S_TAB && KeyTyped) { + if (nextwild(&xpc, WILD_EXPAND_KEEP, 0, firstc != '@') == OK + && nextwild(&xpc, WILD_PREV, 0, firstc != '@') == OK + && nextwild(&xpc, WILD_PREV, 0, firstc != '@') == OK) + goto cmdline_changed; + } + + if (c == NUL || c == K_ZERO) /* NUL is stored as NL */ + c = NL; + + do_abbr = TRUE; /* default: check for abbreviation */ + + /* + * Big switch for a typed command line character. + */ + switch (c) { + case K_EVENT: + event_process(); + // Force a redraw even though the command line didn't change + shell_resized(); + goto cmdline_not_changed; + case K_BS: + case Ctrl_H: + case K_DEL: + case K_KDEL: + case Ctrl_W: + if (cmd_fkmap && c == K_BS) + c = K_DEL; + if (c == K_KDEL) + c = K_DEL; + + /* + * delete current character is the same as backspace on next + * character, except at end of line + */ + if (c == K_DEL && ccline.cmdpos != ccline.cmdlen) + ++ccline.cmdpos; + if (has_mbyte && c == K_DEL) + ccline.cmdpos += mb_off_next(ccline.cmdbuff, + ccline.cmdbuff + ccline.cmdpos); + if (ccline.cmdpos > 0) { + char_u *p; + + j = ccline.cmdpos; + p = ccline.cmdbuff + j; + if (has_mbyte) { + p = mb_prevptr(ccline.cmdbuff, p); + if (c == Ctrl_W) { + while (p > ccline.cmdbuff && vim_isspace(*p)) + p = mb_prevptr(ccline.cmdbuff, p); + i = mb_get_class(p); + while (p > ccline.cmdbuff && mb_get_class(p) == i) + p = mb_prevptr(ccline.cmdbuff, p); + if (mb_get_class(p) != i) + p += (*mb_ptr2len)(p); + } + } else if (c == Ctrl_W) { + while (p > ccline.cmdbuff && vim_isspace(p[-1])) + --p; + i = vim_iswordc(p[-1]); + while (p > ccline.cmdbuff && !vim_isspace(p[-1]) + && vim_iswordc(p[-1]) == i) + --p; + } else + --p; + ccline.cmdpos = (int)(p - ccline.cmdbuff); + ccline.cmdlen -= j - ccline.cmdpos; + i = ccline.cmdpos; + while (i < ccline.cmdlen) + ccline.cmdbuff[i++] = ccline.cmdbuff[j++]; + + /* Truncate at the end, required for multi-byte chars. */ + ccline.cmdbuff[ccline.cmdlen] = NUL; + redrawcmd(); + } else if (ccline.cmdlen == 0 && c != Ctrl_W + && ccline.cmdprompt == NULL && indent == 0) { + /* In ex and debug mode it doesn't make sense to return. */ + if (exmode_active + || ccline.cmdfirstc == '>' + ) + goto cmdline_not_changed; + + free(ccline.cmdbuff); /* no commandline to return */ + ccline.cmdbuff = NULL; + if (!cmd_silent) { + if (cmdmsg_rl) + msg_col = Columns; + else + msg_col = 0; + msg_putchar(' '); /* delete ':' */ + } + redraw_cmdline = TRUE; + goto returncmd; /* back to cmd mode */ + } + goto cmdline_changed; + + case K_INS: + case K_KINS: + /* if Farsi mode set, we are in reverse insert mode - + Do not change the mode */ + if (cmd_fkmap) + beep_flush(); + else + ccline.overstrike = !ccline.overstrike; + + ui_cursor_shape(); /* may show different cursor shape */ + goto cmdline_not_changed; + + case Ctrl_HAT: + if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE)) { + /* ":lmap" mappings exists, toggle use of mappings. */ + State ^= LANGMAP; +#ifdef USE_IM_CONTROL + im_set_active(FALSE); /* Disable input method */ +#endif + if (b_im_ptr != NULL) { + if (State & LANGMAP) + *b_im_ptr = B_IMODE_LMAP; + else + *b_im_ptr = B_IMODE_NONE; + } + } +#ifdef USE_IM_CONTROL + else { + /* There are no ":lmap" mappings, toggle IM. When + * 'imdisable' is set don't try getting the status, it's + * always off. */ + if ((p_imdisable && b_im_ptr != NULL) + ? *b_im_ptr == B_IMODE_IM : im_get_status()) { + im_set_active(FALSE); /* Disable input method */ + if (b_im_ptr != NULL) + *b_im_ptr = B_IMODE_NONE; + } else { + im_set_active(TRUE); /* Enable input method */ + if (b_im_ptr != NULL) + *b_im_ptr = B_IMODE_IM; + } + } +#endif + if (b_im_ptr != NULL) { + if (b_im_ptr == &curbuf->b_p_iminsert) + set_iminsert_global(); + else + set_imsearch_global(); + } + ui_cursor_shape(); /* may show different cursor shape */ + /* Show/unshow value of 'keymap' in status lines later. */ + status_redraw_curbuf(); + goto cmdline_not_changed; + + /* case '@': only in very old vi */ + case Ctrl_U: + /* delete all characters left of the cursor */ + j = ccline.cmdpos; + ccline.cmdlen -= j; + i = ccline.cmdpos = 0; + while (i < ccline.cmdlen) + ccline.cmdbuff[i++] = ccline.cmdbuff[j++]; + /* Truncate at the end, required for multi-byte chars. */ + ccline.cmdbuff[ccline.cmdlen] = NUL; + redrawcmd(); + goto cmdline_changed; + + + case ESC: /* get here if p_wc != ESC or when ESC typed twice */ + case Ctrl_C: + /* In exmode it doesn't make sense to return. Except when + * ":normal" runs out of characters. */ + if (exmode_active + && (ex_normal_busy == 0 || typebuf.tb_len > 0) + ) + goto cmdline_not_changed; + + gotesc = TRUE; /* will free ccline.cmdbuff after + putting it in history */ + goto returncmd; /* back to cmd mode */ + + case Ctrl_R: /* insert register */ +#ifdef USE_ON_FLY_SCROLL + dont_scroll = TRUE; /* disallow scrolling here */ +#endif + putcmdline('"', TRUE); + ++no_mapping; + i = c = plain_vgetc(); /* CTRL-R <char> */ + if (i == Ctrl_O) + i = Ctrl_R; /* CTRL-R CTRL-O == CTRL-R CTRL-R */ + if (i == Ctrl_R) + c = plain_vgetc(); /* CTRL-R CTRL-R <char> */ + --no_mapping; + /* + * Insert the result of an expression. + * Need to save the current command line, to be able to enter + * a new one... + */ + new_cmdpos = -1; + if (c == '=') { + if (ccline.cmdfirstc == '=') { /* can't do this recursively */ + beep_flush(); + c = ESC; + } else { + save_cmdline(&save_ccline); + c = get_expr_register(); + restore_cmdline(&save_ccline); + } + } + if (c != ESC) { /* use ESC to cancel inserting register */ + cmdline_paste(c, i == Ctrl_R, FALSE); + + /* When there was a serious error abort getting the + * command line. */ + if (aborting()) { + gotesc = TRUE; /* will free ccline.cmdbuff after + putting it in history */ + goto returncmd; /* back to cmd mode */ + } + KeyTyped = FALSE; /* Don't do p_wc completion. */ + if (new_cmdpos >= 0) { + /* set_cmdline_pos() was used */ + if (new_cmdpos > ccline.cmdlen) + ccline.cmdpos = ccline.cmdlen; + else + ccline.cmdpos = new_cmdpos; + } + } + redrawcmd(); + goto cmdline_changed; + + case Ctrl_D: + if (showmatches(&xpc, FALSE) == EXPAND_NOTHING) + break; /* Use ^D as normal char instead */ + + redrawcmd(); + continue; /* don't do incremental search now */ + + case K_RIGHT: + case K_S_RIGHT: + case K_C_RIGHT: + do { + if (ccline.cmdpos >= ccline.cmdlen) + break; + i = cmdline_charsize(ccline.cmdpos); + if (KeyTyped && ccline.cmdspos + i >= Columns * Rows) + break; + ccline.cmdspos += i; + if (has_mbyte) + ccline.cmdpos += (*mb_ptr2len)(ccline.cmdbuff + + ccline.cmdpos); + else + ++ccline.cmdpos; + } while ((c == K_S_RIGHT || c == K_C_RIGHT + || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL))) + && ccline.cmdbuff[ccline.cmdpos] != ' '); + if (has_mbyte) + set_cmdspos_cursor(); + goto cmdline_not_changed; + + case K_LEFT: + case K_S_LEFT: + case K_C_LEFT: + if (ccline.cmdpos == 0) + goto cmdline_not_changed; + do { + --ccline.cmdpos; + if (has_mbyte) /* move to first byte of char */ + ccline.cmdpos -= (*mb_head_off)(ccline.cmdbuff, + ccline.cmdbuff + ccline.cmdpos); + ccline.cmdspos -= cmdline_charsize(ccline.cmdpos); + } while (ccline.cmdpos > 0 + && (c == K_S_LEFT || c == K_C_LEFT + || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL))) + && ccline.cmdbuff[ccline.cmdpos - 1] != ' '); + if (has_mbyte) + set_cmdspos_cursor(); + goto cmdline_not_changed; + + case K_IGNORE: + /* Ignore mouse event or ex_window() result. */ + goto cmdline_not_changed; + + + case K_MIDDLEDRAG: + case K_MIDDLERELEASE: + goto cmdline_not_changed; /* Ignore mouse */ + + case K_MIDDLEMOUSE: + if (!mouse_has(MOUSE_COMMAND)) + goto cmdline_not_changed; /* Ignore mouse */ + cmdline_paste(0, TRUE, TRUE); + redrawcmd(); + goto cmdline_changed; + + + case K_LEFTDRAG: + case K_LEFTRELEASE: + case K_RIGHTDRAG: + case K_RIGHTRELEASE: + /* Ignore drag and release events when the button-down wasn't + * seen before. */ + if (ignore_drag_release) + goto cmdline_not_changed; + /* FALLTHROUGH */ + case K_LEFTMOUSE: + case K_RIGHTMOUSE: + if (c == K_LEFTRELEASE || c == K_RIGHTRELEASE) + ignore_drag_release = TRUE; + else + ignore_drag_release = FALSE; + if (!mouse_has(MOUSE_COMMAND)) + goto cmdline_not_changed; /* Ignore mouse */ + + set_cmdspos(); + for (ccline.cmdpos = 0; ccline.cmdpos < ccline.cmdlen; + ++ccline.cmdpos) { + i = cmdline_charsize(ccline.cmdpos); + if (mouse_row <= cmdline_row + ccline.cmdspos / Columns + && mouse_col < ccline.cmdspos % Columns + i) + break; + if (has_mbyte) { + /* Count ">" for double-wide char that doesn't fit. */ + correct_cmdspos(ccline.cmdpos, i); + ccline.cmdpos += (*mb_ptr2len)(ccline.cmdbuff + + ccline.cmdpos) - 1; + } + ccline.cmdspos += i; + } + goto cmdline_not_changed; + + /* Mouse scroll wheel: ignored here */ + case K_MOUSEDOWN: + case K_MOUSEUP: + case K_MOUSELEFT: + case K_MOUSERIGHT: + /* Alternate buttons ignored here */ + case K_X1MOUSE: + case K_X1DRAG: + case K_X1RELEASE: + case K_X2MOUSE: + case K_X2DRAG: + case K_X2RELEASE: + goto cmdline_not_changed; + + + + case K_SELECT: /* end of Select mode mapping - ignore */ + goto cmdline_not_changed; + + case Ctrl_B: /* begin of command line */ + case K_HOME: + case K_KHOME: + case K_S_HOME: + case K_C_HOME: + ccline.cmdpos = 0; + set_cmdspos(); + goto cmdline_not_changed; + + case Ctrl_E: /* end of command line */ + case K_END: + case K_KEND: + case K_S_END: + case K_C_END: + ccline.cmdpos = ccline.cmdlen; + set_cmdspos_cursor(); + goto cmdline_not_changed; + + case Ctrl_A: /* all matches */ + if (nextwild(&xpc, WILD_ALL, 0, firstc != '@') == FAIL) + break; + goto cmdline_changed; + + case Ctrl_L: + if (p_is && !cmd_silent && (firstc == '/' || firstc == '?')) { + /* Add a character from under the cursor for 'incsearch' */ + if (did_incsearch + && !equalpos(curwin->w_cursor, old_cursor)) { + c = gchar_cursor(); + /* If 'ignorecase' and 'smartcase' are set and the + * command line has no uppercase characters, convert + * the character to lowercase */ + if (p_ic && p_scs && !pat_has_uppercase(ccline.cmdbuff)) + c = vim_tolower(c); + if (c != NUL) { + if (c == firstc || vim_strchr((char_u *)( + p_magic ? "\\^$.*[" : "\\^$"), c) + != NULL) { + /* put a backslash before special characters */ + stuffcharReadbuff(c); + c = '\\'; + } + break; + } + } + goto cmdline_not_changed; + } + + /* completion: longest common part */ + if (nextwild(&xpc, WILD_LONGEST, 0, firstc != '@') == FAIL) + break; + goto cmdline_changed; + + case Ctrl_N: /* next match */ + case Ctrl_P: /* previous match */ + if (xpc.xp_numfiles > 0) { + if (nextwild(&xpc, (c == Ctrl_P) ? WILD_PREV : WILD_NEXT, + 0, firstc != '@') == FAIL) + break; + goto cmdline_changed; + } + + case K_UP: + case K_DOWN: + case K_S_UP: + case K_S_DOWN: + case K_PAGEUP: + case K_KPAGEUP: + case K_PAGEDOWN: + case K_KPAGEDOWN: + if (hislen == 0 || firstc == NUL) /* no history */ + goto cmdline_not_changed; + + i = hiscnt; + + /* save current command string so it can be restored later */ + if (lookfor == NULL) { + if ((lookfor = vim_strsave(ccline.cmdbuff)) == NULL) + goto cmdline_not_changed; + lookfor[ccline.cmdpos] = NUL; + } + + j = (int)STRLEN(lookfor); + for (;; ) { + /* one step backwards */ + if (c == K_UP|| c == K_S_UP || c == Ctrl_P + || c == K_PAGEUP || c == K_KPAGEUP) { + if (hiscnt == hislen) /* first time */ + hiscnt = hisidx[histype]; + else if (hiscnt == 0 && hisidx[histype] != hislen - 1) + hiscnt = hislen - 1; + else if (hiscnt != hisidx[histype] + 1) + --hiscnt; + else { /* at top of list */ + hiscnt = i; + break; + } + } else { /* one step forwards */ + /* on last entry, clear the line */ + if (hiscnt == hisidx[histype]) { + hiscnt = hislen; + break; + } + + /* not on a history line, nothing to do */ + if (hiscnt == hislen) + break; + if (hiscnt == hislen - 1) /* wrap around */ + hiscnt = 0; + else + ++hiscnt; + } + if (hiscnt < 0 || history[histype][hiscnt].hisstr == NULL) { + hiscnt = i; + break; + } + if ((c != K_UP && c != K_DOWN) + || hiscnt == i + || STRNCMP(history[histype][hiscnt].hisstr, + lookfor, (size_t)j) == 0) + break; + } + + if (hiscnt != i) { /* jumped to other entry */ + char_u *p; + int len; + int old_firstc; + + free(ccline.cmdbuff); + xpc.xp_context = EXPAND_NOTHING; + if (hiscnt == hislen) + p = lookfor; /* back to the old one */ + else + p = history[histype][hiscnt].hisstr; + + if (histype == HIST_SEARCH + && p != lookfor + && (old_firstc = p[STRLEN(p) + 1]) != firstc) { + /* Correct for the separator character used when + * adding the history entry vs the one used now. + * First loop: count length. + * Second loop: copy the characters. */ + for (i = 0; i <= 1; ++i) { + len = 0; + for (j = 0; p[j] != NUL; ++j) { + /* Replace old sep with new sep, unless it is + * escaped. */ + if (p[j] == old_firstc + && (j == 0 || p[j - 1] != '\\')) { + if (i > 0) + ccline.cmdbuff[len] = firstc; + } else { + /* Escape new sep, unless it is already + * escaped. */ + if (p[j] == firstc + && (j == 0 || p[j - 1] != '\\')) { + if (i > 0) + ccline.cmdbuff[len] = '\\'; + ++len; + } + if (i > 0) + ccline.cmdbuff[len] = p[j]; + } + ++len; + } + if (i == 0) { + alloc_cmdbuff(len); + if (ccline.cmdbuff == NULL) + goto returncmd; + } + } + ccline.cmdbuff[len] = NUL; + } else { + alloc_cmdbuff((int)STRLEN(p)); + if (ccline.cmdbuff == NULL) + goto returncmd; + STRCPY(ccline.cmdbuff, p); + } + + ccline.cmdpos = ccline.cmdlen = (int)STRLEN(ccline.cmdbuff); + redrawcmd(); + goto cmdline_changed; + } + beep_flush(); + goto cmdline_not_changed; + + case Ctrl_V: + case Ctrl_Q: + ignore_drag_release = TRUE; + putcmdline('^', TRUE); + c = get_literal(); /* get next (two) character(s) */ + do_abbr = FALSE; /* don't do abbreviation now */ + /* may need to remove ^ when composing char was typed */ + if (enc_utf8 && utf_iscomposing(c) && !cmd_silent) { + draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos); + msg_putchar(' '); + cursorcmd(); + } + break; + + case Ctrl_K: + ignore_drag_release = TRUE; + putcmdline('?', TRUE); +#ifdef USE_ON_FLY_SCROLL + dont_scroll = TRUE; /* disallow scrolling here */ +#endif + c = get_digraph(TRUE); + if (c != NUL) + break; + + redrawcmd(); + goto cmdline_not_changed; + + case Ctrl__: /* CTRL-_: switch language mode */ + if (!p_ari) + break; + if (p_altkeymap) { + cmd_fkmap = !cmd_fkmap; + if (cmd_fkmap) /* in Farsi always in Insert mode */ + ccline.overstrike = FALSE; + } else /* Hebrew is default */ + cmd_hkmap = !cmd_hkmap; + goto cmdline_not_changed; + + default: +#ifdef UNIX + if (c == intr_char) { + gotesc = TRUE; /* will free ccline.cmdbuff after + putting it in history */ + goto returncmd; /* back to Normal mode */ + } +#endif + /* + * Normal character with no special meaning. Just set mod_mask + * to 0x0 so that typing Shift-Space in the GUI doesn't enter + * the string <S-Space>. This should only happen after ^V. + */ + if (!IS_SPECIAL(c)) + mod_mask = 0x0; + break; + } + /* + * End of switch on command line character. + * We come here if we have a normal character. + */ + + if (do_abbr && (IS_SPECIAL(c) || !vim_iswordc(c)) && (ccheck_abbr( + /* Add ABBR_OFF for characters above 0x100, this is + * what check_abbr() expects. */ + (has_mbyte && + c >= + 0x100) ? (c + + ABBR_OFF) : + c) || c == + Ctrl_RSB)) + goto cmdline_changed; + + /* + * put the character in the command line + */ + if (IS_SPECIAL(c) || mod_mask != 0) + put_on_cmdline(get_special_key_name(c, mod_mask), -1, TRUE); + else { + if (has_mbyte) { + j = (*mb_char2bytes)(c, IObuff); + IObuff[j] = NUL; /* exclude composing chars */ + put_on_cmdline(IObuff, j, TRUE); + } else { + IObuff[0] = c; + put_on_cmdline(IObuff, 1, TRUE); + } + } + goto cmdline_changed; + + /* + * This part implements incremental searches for "/" and "?" + * Jump to cmdline_not_changed when a character has been read but the command + * line did not change. Then we only search and redraw if something changed in + * the past. + * Jump to cmdline_changed when the command line did change. + * (Sorry for the goto's, I know it is ugly). + */ +cmdline_not_changed: + if (!incsearch_postponed) + continue; + +cmdline_changed: + /* + * 'incsearch' highlighting. + */ + if (p_is && !cmd_silent && (firstc == '/' || firstc == '?')) { + pos_T end_pos; + proftime_T tm; + + /* if there is a character waiting, search and redraw later */ + if (char_avail()) { + incsearch_postponed = TRUE; + continue; + } + incsearch_postponed = FALSE; + curwin->w_cursor = old_cursor; /* start at old position */ + + /* If there is no command line, don't do anything */ + if (ccline.cmdlen == 0) + i = 0; + else { + cursor_off(); /* so the user knows we're busy */ + out_flush(); + ++emsg_off; /* So it doesn't beep if bad expr */ + /* Set the time limit to half a second. */ + profile_setlimit(500L, &tm); + i = do_search(NULL, firstc, ccline.cmdbuff, count, + SEARCH_KEEP + SEARCH_OPT + SEARCH_NOOF + SEARCH_PEEK, + &tm + ); + --emsg_off; + /* if interrupted while searching, behave like it failed */ + if (got_int) { + (void)vpeekc(); /* remove <C-C> from input stream */ + got_int = FALSE; /* don't abandon the command line */ + i = 0; + } else if (char_avail()) + /* cancelled searching because a char was typed */ + incsearch_postponed = TRUE; + } + if (i != 0) + highlight_match = TRUE; /* highlight position */ + else + highlight_match = FALSE; /* remove highlight */ + + /* first restore the old curwin values, so the screen is + * positioned in the same way as the actual search command */ + curwin->w_leftcol = old_leftcol; + curwin->w_topline = old_topline; + curwin->w_topfill = old_topfill; + curwin->w_botline = old_botline; + changed_cline_bef_curs(); + update_topline(); + + if (i != 0) { + pos_T save_pos = curwin->w_cursor; + + /* + * First move cursor to end of match, then to the start. This + * moves the whole match onto the screen when 'nowrap' is set. + */ + curwin->w_cursor.lnum += search_match_lines; + curwin->w_cursor.col = search_match_endcol; + if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) { + curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; + coladvance((colnr_T)MAXCOL); + } + validate_cursor(); + end_pos = curwin->w_cursor; + curwin->w_cursor = save_pos; + } else + end_pos = curwin->w_cursor; /* shutup gcc 4 */ + + validate_cursor(); + /* May redraw the status line to show the cursor position. */ + if (p_ru && curwin->w_status_height > 0) + curwin->w_redr_status = TRUE; + + save_cmdline(&save_ccline); + update_screen(SOME_VALID); + restore_cmdline(&save_ccline); + + /* Leave it at the end to make CTRL-R CTRL-W work. */ + if (i != 0) + curwin->w_cursor = end_pos; + + msg_starthere(); + redrawcmdline(); + did_incsearch = TRUE; + } + + if (cmdmsg_rl + || (p_arshape && !p_tbidi && enc_utf8) + ) + /* Always redraw the whole command line to fix shaping and + * right-left typing. Not efficient, but it works. + * Do it only when there are no characters left to read + * to avoid useless intermediate redraws. */ + if (vpeekc() == NUL) + redrawcmd(); + } + +returncmd: + + cmdmsg_rl = FALSE; + + cmd_fkmap = 0; + + ExpandCleanup(&xpc); + ccline.xpc = NULL; + + if (did_incsearch) { + curwin->w_cursor = old_cursor; + curwin->w_curswant = old_curswant; + curwin->w_leftcol = old_leftcol; + curwin->w_topline = old_topline; + curwin->w_topfill = old_topfill; + curwin->w_botline = old_botline; + highlight_match = FALSE; + validate_cursor(); /* needed for TAB */ + redraw_later(SOME_VALID); + } + + if (ccline.cmdbuff != NULL) { + /* + * Put line in history buffer (":" and "=" only when it was typed). + */ + if (ccline.cmdlen && firstc != NUL + && (some_key_typed || histype == HIST_SEARCH)) { + add_to_history(histype, ccline.cmdbuff, TRUE, + histype == HIST_SEARCH ? firstc : NUL); + if (firstc == ':') { + free(new_last_cmdline); + new_last_cmdline = vim_strsave(ccline.cmdbuff); + } + } + + if (gotesc) { /* abandon command line */ + free(ccline.cmdbuff); + ccline.cmdbuff = NULL; + if (msg_scrolled == 0) + compute_cmdrow(); + MSG(""); + redraw_cmdline = TRUE; + } + } + + /* + * If the screen was shifted up, redraw the whole screen (later). + * If the line is too long, clear it, so ruler and shown command do + * not get printed in the middle of it. + */ + msg_check(); + msg_scroll = save_msg_scroll; + redir_off = FALSE; + + /* When the command line was typed, no need for a wait-return prompt. */ + if (some_key_typed) + need_wait_return = FALSE; + + State = save_State; +#ifdef USE_IM_CONTROL + if (b_im_ptr != NULL && *b_im_ptr != B_IMODE_LMAP) + im_save_status(b_im_ptr); + im_set_active(FALSE); +#endif + setmouse(); + ui_cursor_shape(); /* may show different cursor shape */ + + { + char_u *p = ccline.cmdbuff; + + /* Make ccline empty, getcmdline() may try to use it. */ + ccline.cmdbuff = NULL; + return p; + } +} + +/* + * Get a command line with a prompt. + * This is prepared to be called recursively from getcmdline() (e.g. by + * f_input() when evaluating an expression from CTRL-R =). + * Returns the command line in allocated memory, or NULL. + */ +char_u * +getcmdline_prompt ( + int firstc, + char_u *prompt, /* command line prompt */ + int attr, /* attributes for prompt */ + int xp_context, /* type of expansion */ + char_u *xp_arg /* user-defined expansion argument */ +) +{ + char_u *s; + struct cmdline_info save_ccline; + int msg_col_save = msg_col; + + save_cmdline(&save_ccline); + ccline.cmdprompt = prompt; + ccline.cmdattr = attr; + ccline.xp_context = xp_context; + ccline.xp_arg = xp_arg; + ccline.input_fn = (firstc == '@'); + s = getcmdline(firstc, 1L, 0); + restore_cmdline(&save_ccline); + /* Restore msg_col, the prompt from input() may have changed it. + * But only if called recursively and the commandline is therefore being + * restored to an old one; if not, the input() prompt stays on the screen, + * so we need its modified msg_col left intact. */ + if (ccline.cmdbuff != NULL) + msg_col = msg_col_save; + + return s; +} + +/* + * Return TRUE when the text must not be changed and we can't switch to + * another window or buffer. Used when editing the command line etc. + */ +int text_locked(void) { + if (cmdwin_type != 0) + return TRUE; + return textlock != 0; +} + +/* + * Give an error message for a command that isn't allowed while the cmdline + * window is open or editing the cmdline in another way. + */ +void text_locked_msg(void) +{ + if (cmdwin_type != 0) + EMSG(_(e_cmdwin)); + else + EMSG(_(e_secure)); +} + +/* + * Check if "curbuf_lock" or "allbuf_lock" is set and return TRUE when it is + * and give an error message. + */ +int curbuf_locked(void) +{ + if (curbuf_lock > 0) { + EMSG(_("E788: Not allowed to edit another buffer now")); + return TRUE; + } + return allbuf_locked(); +} + +/* + * Check if "allbuf_lock" is set and return TRUE when it is and give an error + * message. + */ +int allbuf_locked(void) +{ + if (allbuf_lock > 0) { + EMSG(_("E811: Not allowed to change buffer information now")); + return TRUE; + } + return FALSE; +} + +static int cmdline_charsize(int idx) +{ + if (cmdline_star > 0) /* showing '*', always 1 position */ + return 1; + return ptr2cells(ccline.cmdbuff + idx); +} + +/* + * Compute the offset of the cursor on the command line for the prompt and + * indent. + */ +static void set_cmdspos(void) +{ + if (ccline.cmdfirstc != NUL) + ccline.cmdspos = 1 + ccline.cmdindent; + else + ccline.cmdspos = 0 + ccline.cmdindent; +} + +/* + * Compute the screen position for the cursor on the command line. + */ +static void set_cmdspos_cursor(void) +{ + int i, m, c; + + set_cmdspos(); + if (KeyTyped) { + m = Columns * Rows; + if (m < 0) /* overflow, Columns or Rows at weird value */ + m = MAXCOL; + } else + m = MAXCOL; + for (i = 0; i < ccline.cmdlen && i < ccline.cmdpos; ++i) { + c = cmdline_charsize(i); + /* Count ">" for double-wide multi-byte char that doesn't fit. */ + if (has_mbyte) + correct_cmdspos(i, c); + /* If the cmdline doesn't fit, show cursor on last visible char. + * Don't move the cursor itself, so we can still append. */ + if ((ccline.cmdspos += c) >= m) { + ccline.cmdspos -= c; + break; + } + if (has_mbyte) + i += (*mb_ptr2len)(ccline.cmdbuff + i) - 1; + } +} + +/* + * Check if the character at "idx", which is "cells" wide, is a multi-byte + * character that doesn't fit, so that a ">" must be displayed. + */ +static void correct_cmdspos(int idx, int cells) +{ + if ((*mb_ptr2len)(ccline.cmdbuff + idx) > 1 + && (*mb_ptr2cells)(ccline.cmdbuff + idx) > 1 + && ccline.cmdspos % Columns + cells > Columns) + ccline.cmdspos++; +} + +/* + * Get an Ex command line for the ":" command. + */ +char_u * +getexline ( + int c, /* normally ':', NUL for ":append" */ + void *cookie, + int indent /* indent for inside conditionals */ +) +{ + /* When executing a register, remove ':' that's in front of each line. */ + if (exec_from_reg && vpeekc() == ':') + (void)vgetc(); + return getcmdline(c, 1L, indent); +} + +/* + * Get an Ex command line for Ex mode. + * In Ex mode we only use the OS supplied line editing features and no + * mappings or abbreviations. + * Returns a string in allocated memory or NULL. + */ +char_u * +getexmodeline ( + int promptc, /* normally ':', NUL for ":append" and '?' for + :s prompt */ + void *cookie, + int indent /* indent for inside conditionals */ +) +{ + garray_T line_ga; + char_u *pend; + int startcol = 0; + int c1 = 0; + int escaped = FALSE; /* CTRL-V typed */ + int vcol = 0; + char_u *p; + int prev_char; + + /* Switch cursor on now. This avoids that it happens after the "\n", which + * confuses the system function that computes tabstops. */ + cursor_on(); + + /* always start in column 0; write a newline if necessary */ + compute_cmdrow(); + if ((msg_col || msg_didout) && promptc != '?') + msg_putchar('\n'); + if (promptc == ':') { + /* indent that is only displayed, not in the line itself */ + if (p_prompt) + msg_putchar(':'); + while (indent-- > 0) + msg_putchar(' '); + startcol = msg_col; + } + + ga_init(&line_ga, 1, 30); + + /* autoindent for :insert and :append is in the line itself */ + if (promptc <= 0) { + vcol = indent; + while (indent >= 8) { + ga_append(&line_ga, TAB); + msg_puts((char_u *)" "); + indent -= 8; + } + while (indent-- > 0) { + ga_append(&line_ga, ' '); + msg_putchar(' '); + } + } + ++no_mapping; + ++allow_keys; + + /* + * Get the line, one character at a time. + */ + got_int = FALSE; + while (!got_int) { + ga_grow(&line_ga, 40); + + /* Get one character at a time. Don't use inchar(), it can't handle + * special characters. */ + prev_char = c1; + c1 = vgetc(); + + /* + * Handle line editing. + * Previously this was left to the system, putting the terminal in + * cooked mode, but then CTRL-D and CTRL-T can't be used properly. + */ + if (got_int) { + msg_putchar('\n'); + break; + } + + if (!escaped) { + /* CR typed means "enter", which is NL */ + if (c1 == '\r') + c1 = '\n'; + + if (c1 == BS || c1 == K_BS + || c1 == DEL || c1 == K_DEL || c1 == K_KDEL) { + if (line_ga.ga_len > 0) { + --line_ga.ga_len; + goto redraw; + } + continue; + } + + if (c1 == Ctrl_U) { + msg_col = startcol; + msg_clr_eos(); + line_ga.ga_len = 0; + continue; + } + + if (c1 == Ctrl_T) { + long sw = get_sw_value(curbuf); + + p = (char_u *)line_ga.ga_data; + p[line_ga.ga_len] = NUL; + indent = get_indent_str(p, 8); + indent += sw - indent % sw; +add_indent: + while (get_indent_str(p, 8) < indent) { + char_u *s = skipwhite(p); + + ga_grow(&line_ga, 1); + memmove(s + 1, s, line_ga.ga_len - (s - p) + 1); + *s = ' '; + ++line_ga.ga_len; + } +redraw: + /* redraw the line */ + msg_col = startcol; + vcol = 0; + for (p = (char_u *)line_ga.ga_data; + p < (char_u *)line_ga.ga_data + line_ga.ga_len; ++p) { + if (*p == TAB) { + do { + msg_putchar(' '); + } while (++vcol % 8); + } else { + msg_outtrans_len(p, 1); + vcol += char2cells(*p); + } + } + msg_clr_eos(); + windgoto(msg_row, msg_col); + continue; + } + + if (c1 == Ctrl_D) { + /* Delete one shiftwidth. */ + p = (char_u *)line_ga.ga_data; + if (prev_char == '0' || prev_char == '^') { + if (prev_char == '^') + ex_keep_indent = TRUE; + indent = 0; + p[--line_ga.ga_len] = NUL; + } else { + p[line_ga.ga_len] = NUL; + indent = get_indent_str(p, 8); + --indent; + indent -= indent % get_sw_value(curbuf); + } + while (get_indent_str(p, 8) > indent) { + char_u *s = skipwhite(p); + + memmove(s - 1, s, line_ga.ga_len - (s - p) + 1); + --line_ga.ga_len; + } + goto add_indent; + } + + if (c1 == Ctrl_V || c1 == Ctrl_Q) { + escaped = TRUE; + continue; + } + + if (IS_SPECIAL(c1)) { + // Process pending events + event_process(); + // Ignore other special key codes + continue; + } + } + + if (IS_SPECIAL(c1)) + c1 = '?'; + ((char_u *)line_ga.ga_data)[line_ga.ga_len] = c1; + if (c1 == '\n') + msg_putchar('\n'); + else if (c1 == TAB) { + /* Don't use chartabsize(), 'ts' can be different */ + do { + msg_putchar(' '); + } while (++vcol % 8); + } else { + msg_outtrans_len( + ((char_u *)line_ga.ga_data) + line_ga.ga_len, 1); + vcol += char2cells(c1); + } + ++line_ga.ga_len; + escaped = FALSE; + + windgoto(msg_row, msg_col); + pend = (char_u *)(line_ga.ga_data) + line_ga.ga_len; + + /* We are done when a NL is entered, but not when it comes after an + * odd number of backslashes, that results in a NUL. */ + if (line_ga.ga_len > 0 && pend[-1] == '\n') { + int bcount = 0; + + while (line_ga.ga_len - 2 >= bcount && pend[-2 - bcount] == '\\') + ++bcount; + + if (bcount > 0) { + /* Halve the number of backslashes: "\NL" -> "NUL", "\\NL" -> + * "\NL", etc. */ + line_ga.ga_len -= (bcount + 1) / 2; + pend -= (bcount + 1) / 2; + pend[-1] = '\n'; + } + + if ((bcount & 1) == 0) { + --line_ga.ga_len; + --pend; + *pend = NUL; + break; + } + } + } + + --no_mapping; + --allow_keys; + + /* make following messages go to the next line */ + msg_didout = FALSE; + msg_col = 0; + if (msg_row < Rows - 1) + ++msg_row; + emsg_on_display = FALSE; /* don't want ui_delay() */ + + if (got_int) + ga_clear(&line_ga); + + return (char_u *)line_ga.ga_data; +} + +/* + * Allocate a new command line buffer. + * Assigns the new buffer to ccline.cmdbuff and ccline.cmdbufflen. + * Returns the new value of ccline.cmdbuff and ccline.cmdbufflen. + */ +static void alloc_cmdbuff(int len) +{ + /* + * give some extra space to avoid having to allocate all the time + */ + if (len < 80) + len = 100; + else + len += 20; + + ccline.cmdbuff = alloc(len); /* caller should check for out-of-memory */ + ccline.cmdbufflen = len; +} + +/* + * Re-allocate the command line to length len + something extra. + * return FAIL for failure, OK otherwise + */ +static int realloc_cmdbuff(int len) +{ + char_u *p; + + if (len < ccline.cmdbufflen) + return OK; /* no need to resize */ + + p = ccline.cmdbuff; + alloc_cmdbuff(len); /* will get some more */ + if (ccline.cmdbuff == NULL) { /* out of memory */ + ccline.cmdbuff = p; /* keep the old one */ + return FAIL; + } + /* There isn't always a NUL after the command, but it may need to be + * there, thus copy up to the NUL and add a NUL. */ + memmove(ccline.cmdbuff, p, (size_t)ccline.cmdlen); + ccline.cmdbuff[ccline.cmdlen] = NUL; + free(p); + + if (ccline.xpc != NULL + && ccline.xpc->xp_pattern != NULL + && ccline.xpc->xp_context != EXPAND_NOTHING + && ccline.xpc->xp_context != EXPAND_UNSUCCESSFUL) { + int i = (int)(ccline.xpc->xp_pattern - p); + + /* If xp_pattern points inside the old cmdbuff it needs to be adjusted + * to point into the newly allocated memory. */ + if (i >= 0 && i <= ccline.cmdlen) + ccline.xpc->xp_pattern = ccline.cmdbuff + i; + } + + return OK; +} + +static char_u *arshape_buf = NULL; + +# if defined(EXITFREE) || defined(PROTO) +void free_cmdline_buf(void) +{ + free(arshape_buf); +} + +# endif + +/* + * Draw part of the cmdline at the current cursor position. But draw stars + * when cmdline_star is TRUE. + */ +static void draw_cmdline(int start, int len) +{ + int i; + + if (cmdline_star > 0) + for (i = 0; i < len; ++i) { + msg_putchar('*'); + if (has_mbyte) + i += (*mb_ptr2len)(ccline.cmdbuff + start + i) - 1; + } + else if (p_arshape && !p_tbidi && enc_utf8 && len > 0) { + static int buflen = 0; + char_u *p; + int j; + int newlen = 0; + int mb_l; + int pc, pc1 = 0; + int prev_c = 0; + int prev_c1 = 0; + int u8c; + int u8cc[MAX_MCO]; + int nc = 0; + + /* + * Do arabic shaping into a temporary buffer. This is very + * inefficient! + */ + if (len * 2 + 2 > buflen) { + /* Re-allocate the buffer. We keep it around to avoid a lot of + * alloc()/free() calls. */ + free(arshape_buf); + buflen = len * 2 + 2; + arshape_buf = alloc(buflen); + if (arshape_buf == NULL) + return; /* out of memory */ + } + + if (utf_iscomposing(utf_ptr2char(ccline.cmdbuff + start))) { + /* Prepend a space to draw the leading composing char on. */ + arshape_buf[0] = ' '; + newlen = 1; + } + + for (j = start; j < start + len; j += mb_l) { + p = ccline.cmdbuff + j; + u8c = utfc_ptr2char_len(p, u8cc, start + len - j); + mb_l = utfc_ptr2len_len(p, start + len - j); + if (arabic_char(u8c)) { + /* Do Arabic shaping. */ + if (cmdmsg_rl) { + /* displaying from right to left */ + pc = prev_c; + pc1 = prev_c1; + prev_c1 = u8cc[0]; + if (j + mb_l >= start + len) + nc = NUL; + else + nc = utf_ptr2char(p + mb_l); + } else { + /* displaying from left to right */ + if (j + mb_l >= start + len) + pc = NUL; + else { + int pcc[MAX_MCO]; + + pc = utfc_ptr2char_len(p + mb_l, pcc, + start + len - j - mb_l); + pc1 = pcc[0]; + } + nc = prev_c; + } + prev_c = u8c; + + u8c = arabic_shape(u8c, NULL, &u8cc[0], pc, pc1, nc); + + newlen += (*mb_char2bytes)(u8c, arshape_buf + newlen); + if (u8cc[0] != 0) { + newlen += (*mb_char2bytes)(u8cc[0], arshape_buf + newlen); + if (u8cc[1] != 0) + newlen += (*mb_char2bytes)(u8cc[1], + arshape_buf + newlen); + } + } else { + prev_c = u8c; + memmove(arshape_buf + newlen, p, mb_l); + newlen += mb_l; + } + } + + msg_outtrans_len(arshape_buf, newlen); + } else + msg_outtrans_len(ccline.cmdbuff + start, len); +} + +/* + * Put a character on the command line. Shifts the following text to the + * right when "shift" is TRUE. Used for CTRL-V, CTRL-K, etc. + * "c" must be printable (fit in one display cell)! + */ +void putcmdline(int c, int shift) +{ + if (cmd_silent) + return; + msg_no_more = TRUE; + msg_putchar(c); + if (shift) + draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos); + msg_no_more = FALSE; + cursorcmd(); +} + +/* + * Undo a putcmdline(c, FALSE). + */ +void unputcmdline(void) +{ + if (cmd_silent) + return; + msg_no_more = TRUE; + if (ccline.cmdlen == ccline.cmdpos) + msg_putchar(' '); + else if (has_mbyte) + draw_cmdline(ccline.cmdpos, + (*mb_ptr2len)(ccline.cmdbuff + ccline.cmdpos)); + else + draw_cmdline(ccline.cmdpos, 1); + msg_no_more = FALSE; + cursorcmd(); +} + +/* + * Put the given string, of the given length, onto the command line. + * If len is -1, then STRLEN() is used to calculate the length. + * If 'redraw' is TRUE then the new part of the command line, and the remaining + * part will be redrawn, otherwise it will not. If this function is called + * twice in a row, then 'redraw' should be FALSE and redrawcmd() should be + * called afterwards. + */ +int put_on_cmdline(char_u *str, int len, int redraw) +{ + int retval; + int i; + int m; + int c; + + if (len < 0) + len = (int)STRLEN(str); + + /* Check if ccline.cmdbuff needs to be longer */ + if (ccline.cmdlen + len + 1 >= ccline.cmdbufflen) + retval = realloc_cmdbuff(ccline.cmdlen + len + 1); + else + retval = OK; + if (retval == OK) { + if (!ccline.overstrike) { + memmove(ccline.cmdbuff + ccline.cmdpos + len, + ccline.cmdbuff + ccline.cmdpos, + (size_t)(ccline.cmdlen - ccline.cmdpos)); + ccline.cmdlen += len; + } else { + if (has_mbyte) { + /* Count nr of characters in the new string. */ + m = 0; + for (i = 0; i < len; i += (*mb_ptr2len)(str + i)) + ++m; + /* Count nr of bytes in cmdline that are overwritten by these + * characters. */ + for (i = ccline.cmdpos; i < ccline.cmdlen && m > 0; + i += (*mb_ptr2len)(ccline.cmdbuff + i)) + --m; + if (i < ccline.cmdlen) { + memmove(ccline.cmdbuff + ccline.cmdpos + len, + ccline.cmdbuff + i, (size_t)(ccline.cmdlen - i)); + ccline.cmdlen += ccline.cmdpos + len - i; + } else + ccline.cmdlen = ccline.cmdpos + len; + } else if (ccline.cmdpos + len > ccline.cmdlen) + ccline.cmdlen = ccline.cmdpos + len; + } + memmove(ccline.cmdbuff + ccline.cmdpos, str, (size_t)len); + ccline.cmdbuff[ccline.cmdlen] = NUL; + + if (enc_utf8) { + /* When the inserted text starts with a composing character, + * backup to the character before it. There could be two of them. + */ + i = 0; + c = utf_ptr2char(ccline.cmdbuff + ccline.cmdpos); + while (ccline.cmdpos > 0 && utf_iscomposing(c)) { + i = (*mb_head_off)(ccline.cmdbuff, + ccline.cmdbuff + ccline.cmdpos - 1) + 1; + ccline.cmdpos -= i; + len += i; + c = utf_ptr2char(ccline.cmdbuff + ccline.cmdpos); + } + if (i == 0 && ccline.cmdpos > 0 && arabic_maycombine(c)) { + /* Check the previous character for Arabic combining pair. */ + i = (*mb_head_off)(ccline.cmdbuff, + ccline.cmdbuff + ccline.cmdpos - 1) + 1; + if (arabic_combine(utf_ptr2char(ccline.cmdbuff + + ccline.cmdpos - i), c)) { + ccline.cmdpos -= i; + len += i; + } else + i = 0; + } + if (i != 0) { + /* Also backup the cursor position. */ + i = ptr2cells(ccline.cmdbuff + ccline.cmdpos); + ccline.cmdspos -= i; + msg_col -= i; + if (msg_col < 0) { + msg_col += Columns; + --msg_row; + } + } + } + + if (redraw && !cmd_silent) { + msg_no_more = TRUE; + i = cmdline_row; + cursorcmd(); + draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos); + /* Avoid clearing the rest of the line too often. */ + if (cmdline_row != i || ccline.overstrike) + msg_clr_eos(); + msg_no_more = FALSE; + } + /* + * If we are in Farsi command mode, the character input must be in + * Insert mode. So do not advance the cmdpos. + */ + if (!cmd_fkmap) { + if (KeyTyped) { + m = Columns * Rows; + if (m < 0) /* overflow, Columns or Rows at weird value */ + m = MAXCOL; + } else + m = MAXCOL; + for (i = 0; i < len; ++i) { + c = cmdline_charsize(ccline.cmdpos); + /* count ">" for a double-wide char that doesn't fit. */ + if (has_mbyte) + correct_cmdspos(ccline.cmdpos, c); + /* Stop cursor at the end of the screen, but do increment the + * insert position, so that entering a very long command + * works, even though you can't see it. */ + if (ccline.cmdspos + c < m) + ccline.cmdspos += c; + if (has_mbyte) { + c = (*mb_ptr2len)(ccline.cmdbuff + ccline.cmdpos) - 1; + if (c > len - i - 1) + c = len - i - 1; + ccline.cmdpos += c; + i += c; + } + ++ccline.cmdpos; + } + } + } + if (redraw) + msg_check(); + return retval; +} + +static struct cmdline_info prev_ccline; +static int prev_ccline_used = FALSE; + +/* + * Save ccline, because obtaining the "=" register may execute "normal :cmd" + * and overwrite it. But get_cmdline_str() may need it, thus make it + * available globally in prev_ccline. + */ +static void save_cmdline(struct cmdline_info *ccp) +{ + if (!prev_ccline_used) { + memset(&prev_ccline, 0, sizeof(struct cmdline_info)); + prev_ccline_used = TRUE; + } + *ccp = prev_ccline; + prev_ccline = ccline; + ccline.cmdbuff = NULL; + ccline.cmdprompt = NULL; + ccline.xpc = NULL; +} + +/* + * Restore ccline after it has been saved with save_cmdline(). + */ +static void restore_cmdline(struct cmdline_info *ccp) +{ + ccline = prev_ccline; + prev_ccline = *ccp; +} + +/* + * Save the command line into allocated memory. Returns a pointer to be + * passed to restore_cmdline_alloc() later. + * Returns NULL when failed. + */ +char_u *save_cmdline_alloc(void) +{ + struct cmdline_info *p; + + p = (struct cmdline_info *)alloc((unsigned)sizeof(struct cmdline_info)); + if (p != NULL) + save_cmdline(p); + return (char_u *)p; +} + +/* + * Restore the command line from the return value of save_cmdline_alloc(). + */ +void restore_cmdline_alloc(char_u *p) +{ + if (p != NULL) { + restore_cmdline((struct cmdline_info *)p); + free(p); + } +} + +/* + * paste a yank register into the command line. + * used by CTRL-R command in command-line mode + * insert_reg() can't be used here, because special characters from the + * register contents will be interpreted as commands. + * + * return FAIL for failure, OK otherwise + */ +static int +cmdline_paste ( + int regname, + int literally, /* Insert text literally instead of "as typed" */ + int remcr /* remove trailing CR */ +) +{ + long i; + char_u *arg; + char_u *p; + int allocated; + struct cmdline_info save_ccline; + + /* check for valid regname; also accept special characters for CTRL-R in + * the command line */ + if (regname != Ctrl_F && regname != Ctrl_P && regname != Ctrl_W + && regname != Ctrl_A && !valid_yank_reg(regname, FALSE)) + return FAIL; + + /* A register containing CTRL-R can cause an endless loop. Allow using + * CTRL-C to break the loop. */ + line_breakcheck(); + if (got_int) + return FAIL; + + + /* Need to save and restore ccline. And set "textlock" to avoid nasty + * things like going to another buffer when evaluating an expression. */ + save_cmdline(&save_ccline); + ++textlock; + i = get_spec_reg(regname, &arg, &allocated, TRUE); + --textlock; + restore_cmdline(&save_ccline); + + if (i) { + /* Got the value of a special register in "arg". */ + if (arg == NULL) + return FAIL; + + /* When 'incsearch' is set and CTRL-R CTRL-W used: skip the duplicate + * part of the word. */ + p = arg; + if (p_is && regname == Ctrl_W) { + char_u *w; + int len; + + /* Locate start of last word in the cmd buffer. */ + for (w = ccline.cmdbuff + ccline.cmdpos; w > ccline.cmdbuff; ) { + if (has_mbyte) { + len = (*mb_head_off)(ccline.cmdbuff, w - 1) + 1; + if (!vim_iswordc(mb_ptr2char(w - len))) + break; + w -= len; + } else { + if (!vim_iswordc(w[-1])) + break; + --w; + } + } + len = (int)((ccline.cmdbuff + ccline.cmdpos) - w); + if (p_ic ? STRNICMP(w, arg, len) == 0 : STRNCMP(w, arg, len) == 0) + p += len; + } + + cmdline_paste_str(p, literally); + if (allocated) + free(arg); + return OK; + } + + return cmdline_paste_reg(regname, literally, remcr); +} + +/* + * Put a string on the command line. + * When "literally" is TRUE, insert literally. + * When "literally" is FALSE, insert as typed, but don't leave the command + * line. + */ +void cmdline_paste_str(char_u *s, int literally) +{ + int c, cv; + + if (literally) + put_on_cmdline(s, -1, TRUE); + else + while (*s != NUL) { + cv = *s; + if (cv == Ctrl_V && s[1]) + ++s; + if (has_mbyte) + c = mb_cptr2char_adv(&s); + else + c = *s++; + if (cv == Ctrl_V || c == ESC || c == Ctrl_C + || c == CAR || c == NL || c == Ctrl_L +#ifdef UNIX + || c == intr_char +#endif + || (c == Ctrl_BSL && *s == Ctrl_N)) + stuffcharReadbuff(Ctrl_V); + stuffcharReadbuff(c); + } +} + +/* + * Delete characters on the command line, from "from" to the current + * position. + */ +static void cmdline_del(int from) +{ + memmove(ccline.cmdbuff + from, ccline.cmdbuff + ccline.cmdpos, + (size_t)(ccline.cmdlen - ccline.cmdpos + 1)); + ccline.cmdlen -= ccline.cmdpos - from; + ccline.cmdpos = from; +} + +/* + * this function is called when the screen size changes and with incremental + * search + */ +void redrawcmdline(void) +{ + if (cmd_silent) + return; + need_wait_return = FALSE; + compute_cmdrow(); + redrawcmd(); + cursorcmd(); +} + +static void redrawcmdprompt(void) +{ + int i; + + if (cmd_silent) + return; + if (ccline.cmdfirstc != NUL) + msg_putchar(ccline.cmdfirstc); + if (ccline.cmdprompt != NULL) { + msg_puts_attr(ccline.cmdprompt, ccline.cmdattr); + ccline.cmdindent = msg_col + (msg_row - cmdline_row) * Columns; + /* do the reverse of set_cmdspos() */ + if (ccline.cmdfirstc != NUL) + --ccline.cmdindent; + } else + for (i = ccline.cmdindent; i > 0; --i) + msg_putchar(' '); +} + +/* + * Redraw what is currently on the command line. + */ +void redrawcmd(void) +{ + if (cmd_silent) + return; + + /* when 'incsearch' is set there may be no command line while redrawing */ + if (ccline.cmdbuff == NULL) { + windgoto(cmdline_row, 0); + msg_clr_eos(); + return; + } + + msg_start(); + redrawcmdprompt(); + + /* Don't use more prompt, truncate the cmdline if it doesn't fit. */ + msg_no_more = TRUE; + draw_cmdline(0, ccline.cmdlen); + msg_clr_eos(); + msg_no_more = FALSE; + + set_cmdspos_cursor(); + + /* + * An emsg() before may have set msg_scroll. This is used in normal mode, + * in cmdline mode we can reset them now. + */ + msg_scroll = FALSE; /* next message overwrites cmdline */ + + /* Typing ':' at the more prompt may set skip_redraw. We don't want this + * in cmdline mode */ + skip_redraw = FALSE; +} + +void compute_cmdrow(void) +{ + if (exmode_active || msg_scrolled != 0) + cmdline_row = Rows - 1; + else + cmdline_row = W_WINROW(lastwin) + lastwin->w_height + + W_STATUS_HEIGHT(lastwin); +} + +static void cursorcmd(void) +{ + if (cmd_silent) + return; + + if (cmdmsg_rl) { + msg_row = cmdline_row + (ccline.cmdspos / (int)(Columns - 1)); + msg_col = (int)Columns - (ccline.cmdspos % (int)(Columns - 1)) - 1; + if (msg_row <= 0) + msg_row = Rows - 1; + } else { + msg_row = cmdline_row + (ccline.cmdspos / (int)Columns); + msg_col = ccline.cmdspos % (int)Columns; + if (msg_row >= Rows) + msg_row = Rows - 1; + } + + windgoto(msg_row, msg_col); +} + +void gotocmdline(int clr) +{ + msg_start(); + if (cmdmsg_rl) + msg_col = Columns - 1; + else + msg_col = 0; /* always start in column 0 */ + if (clr) /* clear the bottom line(s) */ + msg_clr_eos(); /* will reset clear_cmdline */ + windgoto(cmdline_row, 0); +} + +/* + * Check the word in front of the cursor for an abbreviation. + * Called when the non-id character "c" has been entered. + * When an abbreviation is recognized it is removed from the text with + * backspaces and the replacement string is inserted, followed by "c". + */ +static int ccheck_abbr(int c) +{ + if (p_paste || no_abbr) /* no abbreviations or in paste mode */ + return FALSE; + + return check_abbr(c, ccline.cmdbuff, ccline.cmdpos, 0); +} + +static int sort_func_compare(const void *s1, const void *s2) +{ + char_u *p1 = *(char_u **)s1; + char_u *p2 = *(char_u **)s2; + + if (*p1 != '<' && *p2 == '<') return -1; + if (*p1 == '<' && *p2 != '<') return 1; + return STRCMP(p1, p2); +} + +/* + * Return FAIL if this is not an appropriate context in which to do + * completion of anything, return OK if it is (even if there are no matches). + * For the caller, this means that the character is just passed through like a + * normal character (instead of being expanded). This allows :s/^I^D etc. + */ +static int +nextwild ( + expand_T *xp, + int type, + int options, /* extra options for ExpandOne() */ + int escape /* if TRUE, escape the returned matches */ +) +{ + int i, j; + char_u *p1; + char_u *p2; + int difflen; + int v; + + if (xp->xp_numfiles == -1) { + set_expand_context(xp); + cmd_showtail = expand_showtail(xp); + } + + if (xp->xp_context == EXPAND_UNSUCCESSFUL) { + beep_flush(); + return OK; /* Something illegal on command line */ + } + if (xp->xp_context == EXPAND_NOTHING) { + /* Caller can use the character as a normal char instead */ + return FAIL; + } + + MSG_PUTS("..."); /* show that we are busy */ + out_flush(); + + i = (int)(xp->xp_pattern - ccline.cmdbuff); + xp->xp_pattern_len = ccline.cmdpos - i; + + if (type == WILD_NEXT || type == WILD_PREV) { + /* + * Get next/previous match for a previous expanded pattern. + */ + p2 = ExpandOne(xp, NULL, NULL, 0, type); + } else { + /* + * Translate string into pattern and expand it. + */ + if ((p1 = addstar(xp->xp_pattern, xp->xp_pattern_len, + xp->xp_context)) == NULL) + p2 = NULL; + else { + int use_options = options | + WILD_HOME_REPLACE|WILD_ADD_SLASH|WILD_SILENT; + if (escape) + use_options |= WILD_ESCAPE; + + if (p_wic) + use_options += WILD_ICASE; + p2 = ExpandOne(xp, p1, + vim_strnsave(&ccline.cmdbuff[i], xp->xp_pattern_len), + use_options, type); + free(p1); + /* longest match: make sure it is not shorter, happens with :help */ + if (p2 != NULL && type == WILD_LONGEST) { + for (j = 0; j < xp->xp_pattern_len; ++j) + if (ccline.cmdbuff[i + j] == '*' + || ccline.cmdbuff[i + j] == '?') + break; + if ((int)STRLEN(p2) < j) { + free(p2); + p2 = NULL; + } + } + } + } + + if (p2 != NULL && !got_int) { + difflen = (int)STRLEN(p2) - xp->xp_pattern_len; + if (ccline.cmdlen + difflen + 4 > ccline.cmdbufflen) { + v = realloc_cmdbuff(ccline.cmdlen + difflen + 4); + xp->xp_pattern = ccline.cmdbuff + i; + } else + v = OK; + if (v == OK) { + memmove(&ccline.cmdbuff[ccline.cmdpos + difflen], + &ccline.cmdbuff[ccline.cmdpos], + (size_t)(ccline.cmdlen - ccline.cmdpos + 1)); + memmove(&ccline.cmdbuff[i], p2, STRLEN(p2)); + ccline.cmdlen += difflen; + ccline.cmdpos += difflen; + } + } + free(p2); + + redrawcmd(); + cursorcmd(); + + /* When expanding a ":map" command and no matches are found, assume that + * the key is supposed to be inserted literally */ + if (xp->xp_context == EXPAND_MAPPINGS && p2 == NULL) + return FAIL; + + if (xp->xp_numfiles <= 0 && p2 == NULL) + beep_flush(); + else if (xp->xp_numfiles == 1) + /* free expanded pattern */ + (void)ExpandOne(xp, NULL, NULL, 0, WILD_FREE); + + return OK; +} + +/* + * Do wildcard expansion on the string 'str'. + * Chars that should not be expanded must be preceded with a backslash. + * Return a pointer to allocated memory containing the new string. + * Return NULL for failure. + * + * "orig" is the originally expanded string, copied to allocated memory. It + * should either be kept in orig_save or freed. When "mode" is WILD_NEXT or + * WILD_PREV "orig" should be NULL. + * + * Results are cached in xp->xp_files and xp->xp_numfiles, except when "mode" + * is WILD_EXPAND_FREE or WILD_ALL. + * + * mode = WILD_FREE: just free previously expanded matches + * mode = WILD_EXPAND_FREE: normal expansion, do not keep matches + * mode = WILD_EXPAND_KEEP: normal expansion, keep matches + * mode = WILD_NEXT: use next match in multiple match, wrap to first + * mode = WILD_PREV: use previous match in multiple match, wrap to first + * mode = WILD_ALL: return all matches concatenated + * mode = WILD_LONGEST: return longest matched part + * mode = WILD_ALL_KEEP: get all matches, keep matches + * + * options = WILD_LIST_NOTFOUND: list entries without a match + * options = WILD_HOME_REPLACE: do home_replace() for buffer names + * options = WILD_USE_NL: Use '\n' for WILD_ALL + * options = WILD_NO_BEEP: Don't beep for multiple matches + * options = WILD_ADD_SLASH: add a slash after directory names + * options = WILD_KEEP_ALL: don't remove 'wildignore' entries + * options = WILD_SILENT: don't print warning messages + * options = WILD_ESCAPE: put backslash before special chars + * options = WILD_ICASE: ignore case for files + * + * The variables xp->xp_context and xp->xp_backslash must have been set! + */ +char_u * +ExpandOne ( + expand_T *xp, + char_u *str, + char_u *orig, /* allocated copy of original of expanded string */ + int options, + int mode +) +{ + char_u *ss = NULL; + static int findex; + static char_u *orig_save = NULL; /* kept value of orig */ + int orig_saved = FALSE; + int i; + int non_suf_match; /* number without matching suffix */ + + /* + * first handle the case of using an old match + */ + if (mode == WILD_NEXT || mode == WILD_PREV) { + if (xp->xp_numfiles > 0) { + if (mode == WILD_PREV) { + if (findex == -1) + findex = xp->xp_numfiles; + --findex; + } else /* mode == WILD_NEXT */ + ++findex; + + /* + * When wrapping around, return the original string, set findex to + * -1. + */ + if (findex < 0) { + if (orig_save == NULL) + findex = xp->xp_numfiles - 1; + else + findex = -1; + } + if (findex >= xp->xp_numfiles) { + if (orig_save == NULL) + findex = 0; + else + findex = -1; + } + if (p_wmnu) + win_redr_status_matches(xp, xp->xp_numfiles, xp->xp_files, + findex, cmd_showtail); + if (findex == -1) + return vim_strsave(orig_save); + return vim_strsave(xp->xp_files[findex]); + } else + return NULL; + } + + /* free old names */ + if (xp->xp_numfiles != -1 && mode != WILD_ALL && mode != WILD_LONGEST) { + FreeWild(xp->xp_numfiles, xp->xp_files); + xp->xp_numfiles = -1; + free(orig_save); + orig_save = NULL; + } + findex = 0; + + if (mode == WILD_FREE) /* only release file name */ + return NULL; + + if (xp->xp_numfiles == -1) { + free(orig_save); + orig_save = orig; + orig_saved = TRUE; + + /* + * Do the expansion. + */ + if (ExpandFromContext(xp, str, &xp->xp_numfiles, &xp->xp_files, + options) == FAIL) { +#ifdef FNAME_ILLEGAL + /* Illegal file name has been silently skipped. But when there + * are wildcards, the real problem is that there was no match, + * causing the pattern to be added, which has illegal characters. + */ + if (!(options & WILD_SILENT) && (options & WILD_LIST_NOTFOUND)) + EMSG2(_(e_nomatch2), str); +#endif + } else if (xp->xp_numfiles == 0) { + if (!(options & WILD_SILENT)) + EMSG2(_(e_nomatch2), str); + } else { + /* Escape the matches for use on the command line. */ + ExpandEscape(xp, str, xp->xp_numfiles, xp->xp_files, options); + + /* + * Check for matching suffixes in file names. + */ + if (mode != WILD_ALL && mode != WILD_ALL_KEEP + && mode != WILD_LONGEST) { + if (xp->xp_numfiles) + non_suf_match = xp->xp_numfiles; + else + non_suf_match = 1; + if ((xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_DIRECTORIES) + && xp->xp_numfiles > 1) { + /* + * More than one match; check suffix. + * The files will have been sorted on matching suffix in + * expand_wildcards, only need to check the first two. + */ + non_suf_match = 0; + for (i = 0; i < 2; ++i) + if (match_suffix(xp->xp_files[i])) + ++non_suf_match; + } + if (non_suf_match != 1) { + /* Can we ever get here unless it's while expanding + * interactively? If not, we can get rid of this all + * together. Don't really want to wait for this message + * (and possibly have to hit return to continue!). + */ + if (!(options & WILD_SILENT)) + EMSG(_(e_toomany)); + else if (!(options & WILD_NO_BEEP)) + beep_flush(); + } + if (!(non_suf_match != 1 && mode == WILD_EXPAND_FREE)) + ss = vim_strsave(xp->xp_files[0]); + } + } + } + + /* Find longest common part */ + if (mode == WILD_LONGEST && xp->xp_numfiles > 0) { + size_t len; + for (len = 0; xp->xp_files[0][len]; ++len) { + for (i = 0; i < xp->xp_numfiles; ++i) { + if (p_fic && (xp->xp_context == EXPAND_DIRECTORIES + || xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_SHELLCMD + || xp->xp_context == EXPAND_BUFFERS)) { + if (TOLOWER_LOC(xp->xp_files[i][len]) != + TOLOWER_LOC(xp->xp_files[0][len])) + break; + } else if (xp->xp_files[i][len] != xp->xp_files[0][len]) + break; + } + if (i < xp->xp_numfiles) { + if (!(options & WILD_NO_BEEP)) + vim_beep(); + break; + } + } + ss = (char_u *)xstrndup((char *)xp->xp_files[0], len); + findex = -1; /* next p_wc gets first one */ + } + + // Concatenate all matching names + // TODO(philix): use xstpcpy instead of strcat in a loop (ExpandOne) + if (mode == WILD_ALL && xp->xp_numfiles > 0) { + size_t len = 0; + for (i = 0; i < xp->xp_numfiles; ++i) + len += STRLEN(xp->xp_files[i]) + 1; + ss = xmalloc(len); + *ss = NUL; + for (i = 0; i < xp->xp_numfiles; ++i) { + STRCAT(ss, xp->xp_files[i]); + if (i != xp->xp_numfiles - 1) + STRCAT(ss, (options & WILD_USE_NL) ? "\n" : " "); + } + } + + if (mode == WILD_EXPAND_FREE || mode == WILD_ALL) + ExpandCleanup(xp); + + /* Free "orig" if it wasn't stored in "orig_save". */ + if (!orig_saved) + free(orig); + + return ss; +} + +/* + * Prepare an expand structure for use. + */ +void ExpandInit(expand_T *xp) +{ + xp->xp_pattern = NULL; + xp->xp_pattern_len = 0; + xp->xp_backslash = XP_BS_NONE; +#ifndef BACKSLASH_IN_FILENAME + xp->xp_shell = FALSE; +#endif + xp->xp_numfiles = -1; + xp->xp_files = NULL; + xp->xp_arg = NULL; + xp->xp_line = NULL; +} + +/* + * Cleanup an expand structure after use. + */ +void ExpandCleanup(expand_T *xp) +{ + if (xp->xp_numfiles >= 0) { + FreeWild(xp->xp_numfiles, xp->xp_files); + xp->xp_numfiles = -1; + } +} + +void ExpandEscape(expand_T *xp, char_u *str, int numfiles, char_u **files, int options) +{ + int i; + char_u *p; + + /* + * May change home directory back to "~" + */ + if (options & WILD_HOME_REPLACE) + tilde_replace(str, numfiles, files); + + if (options & WILD_ESCAPE) { + if (xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_FILES_IN_PATH + || xp->xp_context == EXPAND_SHELLCMD + || xp->xp_context == EXPAND_BUFFERS + || xp->xp_context == EXPAND_DIRECTORIES) { + /* + * Insert a backslash into a file name before a space, \, %, # + * and wildmatch characters, except '~'. + */ + for (i = 0; i < numfiles; ++i) { + /* for ":set path=" we need to escape spaces twice */ + if (xp->xp_backslash == XP_BS_THREE) { + p = vim_strsave_escaped(files[i], (char_u *)" "); + if (p != NULL) { + free(files[i]); + files[i] = p; +#if defined(BACKSLASH_IN_FILENAME) + p = vim_strsave_escaped(files[i], (char_u *)" "); + if (p != NULL) { + free(files[i]); + files[i] = p; + } +#endif + } + } +#ifdef BACKSLASH_IN_FILENAME + p = vim_strsave_fnameescape(files[i], FALSE); +#else + p = vim_strsave_fnameescape(files[i], xp->xp_shell); +#endif + if (p != NULL) { + free(files[i]); + files[i] = p; + } + + /* If 'str' starts with "\~", replace "~" at start of + * files[i] with "\~". */ + if (str[0] == '\\' && str[1] == '~' && files[i][0] == '~') + escape_fname(&files[i]); + } + xp->xp_backslash = XP_BS_NONE; + + /* If the first file starts with a '+' escape it. Otherwise it + * could be seen as "+cmd". */ + if (*files[0] == '+') + escape_fname(&files[0]); + } else if (xp->xp_context == EXPAND_TAGS) { + /* + * Insert a backslash before characters in a tag name that + * would terminate the ":tag" command. + */ + for (i = 0; i < numfiles; ++i) { + p = vim_strsave_escaped(files[i], (char_u *)"\\|\""); + if (p != NULL) { + free(files[i]); + files[i] = p; + } + } + } + } +} + +/* + * Escape special characters in "fname" for when used as a file name argument + * after a Vim command, or, when "shell" is non-zero, a shell command. + * Returns the result in allocated memory. + */ +char_u *vim_strsave_fnameescape(char_u *fname, int shell) +{ + char_u *p; +#ifdef BACKSLASH_IN_FILENAME + char_u buf[20]; + int j = 0; + + /* Don't escape '[', '{' and '!' if they are in 'isfname'. */ + for (p = PATH_ESC_CHARS; *p != NUL; ++p) + if ((*p != '[' && *p != '{' && *p != '!') || !vim_isfilec(*p)) + buf[j++] = *p; + buf[j] = NUL; + p = vim_strsave_escaped(fname, buf); +#else + p = vim_strsave_escaped(fname, shell ? SHELL_ESC_CHARS : PATH_ESC_CHARS); + if (shell && csh_like_shell() && p != NULL) { + char_u *s; + + /* For csh and similar shells need to put two backslashes before '!'. + * One is taken by Vim, one by the shell. */ + s = vim_strsave_escaped(p, (char_u *)"!"); + free(p); + p = s; + } +#endif + + /* '>' and '+' are special at the start of some commands, e.g. ":edit" and + * ":write". "cd -" has a special meaning. */ + if (p != NULL && (*p == '>' || *p == '+' || (*p == '-' && p[1] == NUL))) + escape_fname(&p); + + return p; +} + +/* + * Put a backslash before the file name in "pp", which is in allocated memory. + */ +static void escape_fname(char_u **pp) +{ + char_u *p; + + p = alloc((unsigned)(STRLEN(*pp) + 2)); + if (p != NULL) { + p[0] = '\\'; + STRCPY(p + 1, *pp); + free(*pp); + *pp = p; + } +} + +/* + * For each file name in files[num_files]: + * If 'orig_pat' starts with "~/", replace the home directory with "~". + */ +void tilde_replace(char_u *orig_pat, int num_files, char_u **files) +{ + int i; + char_u *p; + + if (orig_pat[0] == '~' && vim_ispathsep(orig_pat[1])) { + for (i = 0; i < num_files; ++i) { + p = home_replace_save(NULL, files[i]); + if (p != NULL) { + free(files[i]); + files[i] = p; + } + } + } +} + +/* + * Show all matches for completion on the command line. + * Returns EXPAND_NOTHING when the character that triggered expansion should + * be inserted like a normal character. + */ +static int showmatches(expand_T *xp, int wildmenu) +{ +#define L_SHOWFILE(m) (showtail ? sm_gettail(files_found[m]) : files_found[m]) + int num_files; + char_u **files_found; + int i, j, k; + int maxlen; + int lines; + int columns; + char_u *p; + int lastlen; + int attr; + int showtail; + + if (xp->xp_numfiles == -1) { + set_expand_context(xp); + i = expand_cmdline(xp, ccline.cmdbuff, ccline.cmdpos, + &num_files, &files_found); + showtail = expand_showtail(xp); + if (i != EXPAND_OK) + return i; + + } else { + num_files = xp->xp_numfiles; + files_found = xp->xp_files; + showtail = cmd_showtail; + } + + if (!wildmenu) { + msg_didany = FALSE; /* lines_left will be set */ + msg_start(); /* prepare for paging */ + msg_putchar('\n'); + out_flush(); + cmdline_row = msg_row; + msg_didany = FALSE; /* lines_left will be set again */ + msg_start(); /* prepare for paging */ + } + + if (got_int) + got_int = FALSE; /* only int. the completion, not the cmd line */ + else if (wildmenu) + win_redr_status_matches(xp, num_files, files_found, 0, showtail); + else { + /* find the length of the longest file name */ + maxlen = 0; + for (i = 0; i < num_files; ++i) { + if (!showtail && (xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_SHELLCMD + || xp->xp_context == EXPAND_BUFFERS)) { + home_replace(NULL, files_found[i], NameBuff, MAXPATHL, TRUE); + j = vim_strsize(NameBuff); + } else + j = vim_strsize(L_SHOWFILE(i)); + if (j > maxlen) + maxlen = j; + } + + if (xp->xp_context == EXPAND_TAGS_LISTFILES) + lines = num_files; + else { + /* compute the number of columns and lines for the listing */ + maxlen += 2; /* two spaces between file names */ + columns = ((int)Columns + 2) / maxlen; + if (columns < 1) + columns = 1; + lines = (num_files + columns - 1) / columns; + } + + attr = hl_attr(HLF_D); /* find out highlighting for directories */ + + if (xp->xp_context == EXPAND_TAGS_LISTFILES) { + MSG_PUTS_ATTR(_("tagname"), hl_attr(HLF_T)); + msg_clr_eos(); + msg_advance(maxlen - 3); + MSG_PUTS_ATTR(_(" kind file\n"), hl_attr(HLF_T)); + } + + /* list the files line by line */ + for (i = 0; i < lines; ++i) { + lastlen = 999; + for (k = i; k < num_files; k += lines) { + if (xp->xp_context == EXPAND_TAGS_LISTFILES) { + msg_outtrans_attr(files_found[k], hl_attr(HLF_D)); + p = files_found[k] + STRLEN(files_found[k]) + 1; + msg_advance(maxlen + 1); + msg_puts(p); + msg_advance(maxlen + 3); + msg_puts_long_attr(p + 2, hl_attr(HLF_D)); + break; + } + for (j = maxlen - lastlen; --j >= 0; ) + msg_putchar(' '); + if (xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_SHELLCMD + || xp->xp_context == EXPAND_BUFFERS) { + /* highlight directories */ + if (xp->xp_numfiles != -1) { + char_u *halved_slash; + char_u *exp_path; + + /* Expansion was done before and special characters + * were escaped, need to halve backslashes. Also + * $HOME has been replaced with ~/. */ + exp_path = expand_env_save_opt(files_found[k], TRUE); + halved_slash = backslash_halve_save( + exp_path != NULL ? exp_path : files_found[k]); + j = os_isdir(halved_slash != NULL ? halved_slash + : files_found[k]); + free(exp_path); + free(halved_slash); + } else + /* Expansion was done here, file names are literal. */ + j = os_isdir(files_found[k]); + if (showtail) + p = L_SHOWFILE(k); + else { + home_replace(NULL, files_found[k], NameBuff, MAXPATHL, + TRUE); + p = NameBuff; + } + } else { + j = FALSE; + p = L_SHOWFILE(k); + } + lastlen = msg_outtrans_attr(p, j ? attr : 0); + } + if (msg_col > 0) { /* when not wrapped around */ + msg_clr_eos(); + msg_putchar('\n'); + } + out_flush(); /* show one line at a time */ + if (got_int) { + got_int = FALSE; + break; + } + } + + /* + * we redraw the command below the lines that we have just listed + * This is a bit tricky, but it saves a lot of screen updating. + */ + cmdline_row = msg_row; /* will put it back later */ + } + + if (xp->xp_numfiles == -1) + FreeWild(num_files, files_found); + + return EXPAND_OK; +} + +/* + * Private path_tail for showmatches() (and win_redr_status_matches()): + * Find tail of file name path, but ignore trailing "/". + */ +char_u *sm_gettail(char_u *s) +{ + char_u *p; + char_u *t = s; + int had_sep = FALSE; + + for (p = s; *p != NUL; ) { + if (vim_ispathsep(*p) +#ifdef BACKSLASH_IN_FILENAME + && !rem_backslash(p) +#endif + ) + had_sep = TRUE; + else if (had_sep) { + t = p; + had_sep = FALSE; + } + mb_ptr_adv(p); + } + return t; +} + +/* + * Return TRUE if we only need to show the tail of completion matches. + * When not completing file names or there is a wildcard in the path FALSE is + * returned. + */ +static int expand_showtail(expand_T *xp) +{ + char_u *s; + char_u *end; + + /* When not completing file names a "/" may mean something different. */ + if (xp->xp_context != EXPAND_FILES + && xp->xp_context != EXPAND_SHELLCMD + && xp->xp_context != EXPAND_DIRECTORIES) + return FALSE; + + end = path_tail(xp->xp_pattern); + if (end == xp->xp_pattern) /* there is no path separator */ + return FALSE; + + for (s = xp->xp_pattern; s < end; s++) { + /* Skip escaped wildcards. Only when the backslash is not a path + * separator, on DOS the '*' "path\*\file" must not be skipped. */ + if (rem_backslash(s)) + ++s; + else if (vim_strchr((char_u *)"*?[", *s) != NULL) + return FALSE; + } + return TRUE; +} + +/* + * Prepare a string for expansion. + * When expanding file names: The string will be used with expand_wildcards(). + * Copy "fname[len]" into allocated memory and add a '*' at the end. + * When expanding other names: The string will be used with regcomp(). Copy + * the name into allocated memory and prepend "^". + */ +char_u * +addstar ( + char_u *fname, + int len, + int context /* EXPAND_FILES etc. */ +) +{ + char_u *retval; + int i, j; + int new_len; + char_u *tail; + int ends_in_star; + + if (context != EXPAND_FILES + && context != EXPAND_FILES_IN_PATH + && context != EXPAND_SHELLCMD + && context != EXPAND_DIRECTORIES) { + /* + * Matching will be done internally (on something other than files). + * So we convert the file-matching-type wildcards into our kind for + * use with vim_regcomp(). First work out how long it will be: + */ + + /* For help tags the translation is done in find_help_tags(). + * For a tag pattern starting with "/" no translation is needed. */ + if (context == EXPAND_HELP + || context == EXPAND_COLORS + || context == EXPAND_COMPILER + || context == EXPAND_OWNSYNTAX + || context == EXPAND_FILETYPE + || (context == EXPAND_TAGS && fname[0] == '/')) + retval = vim_strnsave(fname, len); + else { + new_len = len + 2; /* +2 for '^' at start, NUL at end */ + for (i = 0; i < len; i++) { + if (fname[i] == '*' || fname[i] == '~') + new_len++; /* '*' needs to be replaced by ".*" + '~' needs to be replaced by "\~" */ + + /* Buffer names are like file names. "." should be literal */ + if (context == EXPAND_BUFFERS && fname[i] == '.') + new_len++; /* "." becomes "\." */ + + /* Custom expansion takes care of special things, match + * backslashes literally (perhaps also for other types?) */ + if ((context == EXPAND_USER_DEFINED + || context == EXPAND_USER_LIST) && fname[i] == '\\') + new_len++; /* '\' becomes "\\" */ + } + retval = alloc(new_len); + if (retval != NULL) { + retval[0] = '^'; + j = 1; + for (i = 0; i < len; i++, j++) { + /* Skip backslash. But why? At least keep it for custom + * expansion. */ + if (context != EXPAND_USER_DEFINED + && context != EXPAND_USER_LIST + && fname[i] == '\\' + && ++i == len) + break; + + switch (fname[i]) { + case '*': retval[j++] = '.'; + break; + case '~': retval[j++] = '\\'; + break; + case '?': retval[j] = '.'; + continue; + case '.': if (context == EXPAND_BUFFERS) + retval[j++] = '\\'; + break; + case '\\': if (context == EXPAND_USER_DEFINED + || context == EXPAND_USER_LIST) + retval[j++] = '\\'; + break; + } + retval[j] = fname[i]; + } + retval[j] = NUL; + } + } + } else { + retval = alloc(len + 4); + if (retval != NULL) { + vim_strncpy(retval, fname, len); + + /* + * Don't add a star to *, ~, ~user, $var or `cmd`. + * * would become **, which walks the whole tree. + * ~ would be at the start of the file name, but not the tail. + * $ could be anywhere in the tail. + * ` could be anywhere in the file name. + * When the name ends in '$' don't add a star, remove the '$'. + */ + tail = path_tail(retval); + ends_in_star = (len > 0 && retval[len - 1] == '*'); +#ifndef BACKSLASH_IN_FILENAME + for (i = len - 2; i >= 0; --i) { + if (retval[i] != '\\') + break; + ends_in_star = !ends_in_star; + } +#endif + if ((*retval != '~' || tail != retval) + && !ends_in_star + && vim_strchr(tail, '$') == NULL + && vim_strchr(retval, '`') == NULL) + retval[len++] = '*'; + else if (len > 0 && retval[len - 1] == '$') + --len; + retval[len] = NUL; + } + } + return retval; +} + +/* + * Must parse the command line so far to work out what context we are in. + * Completion can then be done based on that context. + * This routine sets the variables: + * xp->xp_pattern The start of the pattern to be expanded within + * the command line (ends at the cursor). + * xp->xp_context The type of thing to expand. Will be one of: + * + * EXPAND_UNSUCCESSFUL Used sometimes when there is something illegal on + * the command line, like an unknown command. Caller + * should beep. + * EXPAND_NOTHING Unrecognised context for completion, use char like + * a normal char, rather than for completion. eg + * :s/^I/ + * EXPAND_COMMANDS Cursor is still touching the command, so complete + * it. + * EXPAND_BUFFERS Complete file names for :buf and :sbuf commands. + * EXPAND_FILES After command with XFILE set, or after setting + * with P_EXPAND set. eg :e ^I, :w>>^I + * EXPAND_DIRECTORIES In some cases this is used instead of the latter + * when we know only directories are of interest. eg + * :set dir=^I + * EXPAND_SHELLCMD After ":!cmd", ":r !cmd" or ":w !cmd". + * EXPAND_SETTINGS Complete variable names. eg :set d^I + * EXPAND_BOOL_SETTINGS Complete boolean variables only, eg :set no^I + * EXPAND_TAGS Complete tags from the files in p_tags. eg :ta a^I + * EXPAND_TAGS_LISTFILES As above, but list filenames on ^D, after :tselect + * EXPAND_HELP Complete tags from the file 'helpfile'/tags + * EXPAND_EVENTS Complete event names + * EXPAND_SYNTAX Complete :syntax command arguments + * EXPAND_HIGHLIGHT Complete highlight (syntax) group names + * EXPAND_AUGROUP Complete autocommand group names + * EXPAND_USER_VARS Complete user defined variable names, eg :unlet a^I + * EXPAND_MAPPINGS Complete mapping and abbreviation names, + * eg :unmap a^I , :cunab x^I + * EXPAND_FUNCTIONS Complete internal or user defined function names, + * eg :call sub^I + * EXPAND_USER_FUNC Complete user defined function names, eg :delf F^I + * EXPAND_EXPRESSION Complete internal or user defined function/variable + * names in expressions, eg :while s^I + * EXPAND_ENV_VARS Complete environment variable names + * EXPAND_USER Complete user names + */ +static void set_expand_context(expand_T *xp) +{ + /* only expansion for ':', '>' and '=' command-lines */ + if (ccline.cmdfirstc != ':' + && ccline.cmdfirstc != '>' && ccline.cmdfirstc != '=' + && !ccline.input_fn + ) { + xp->xp_context = EXPAND_NOTHING; + return; + } + set_cmd_context(xp, ccline.cmdbuff, ccline.cmdlen, ccline.cmdpos); +} + +void +set_cmd_context ( + expand_T *xp, + char_u *str, /* start of command line */ + int len, /* length of command line (excl. NUL) */ + int col /* position of cursor */ +) +{ + int old_char = NUL; + char_u *nextcomm; + + /* + * Avoid a UMR warning from Purify, only save the character if it has been + * written before. + */ + if (col < len) + old_char = str[col]; + str[col] = NUL; + nextcomm = str; + + if (ccline.cmdfirstc == '=') { + /* pass CMD_SIZE because there is no real command */ + set_context_for_expression(xp, str, CMD_SIZE); + } else if (ccline.input_fn) { + xp->xp_context = ccline.xp_context; + xp->xp_pattern = ccline.cmdbuff; + xp->xp_arg = ccline.xp_arg; + } else + while (nextcomm != NULL) + nextcomm = set_one_cmd_context(xp, nextcomm); + + /* Store the string here so that call_user_expand_func() can get to them + * easily. */ + xp->xp_line = str; + xp->xp_col = col; + + str[col] = old_char; +} + +/* + * Expand the command line "str" from context "xp". + * "xp" must have been set by set_cmd_context(). + * xp->xp_pattern points into "str", to where the text that is to be expanded + * starts. + * Returns EXPAND_UNSUCCESSFUL when there is something illegal before the + * cursor. + * Returns EXPAND_NOTHING when there is nothing to expand, might insert the + * key that triggered expansion literally. + * Returns EXPAND_OK otherwise. + */ +int +expand_cmdline ( + expand_T *xp, + char_u *str, /* start of command line */ + int col, /* position of cursor */ + int *matchcount, /* return: nr of matches */ + char_u ***matches /* return: array of pointers to matches */ +) +{ + char_u *file_str = NULL; + int options = WILD_ADD_SLASH|WILD_SILENT; + + if (xp->xp_context == EXPAND_UNSUCCESSFUL) { + beep_flush(); + return EXPAND_UNSUCCESSFUL; /* Something illegal on command line */ + } + if (xp->xp_context == EXPAND_NOTHING) { + /* Caller can use the character as a normal char instead */ + return EXPAND_NOTHING; + } + + /* add star to file name, or convert to regexp if not exp. files. */ + xp->xp_pattern_len = (int)(str + col - xp->xp_pattern); + file_str = addstar(xp->xp_pattern, xp->xp_pattern_len, xp->xp_context); + if (file_str == NULL) + return EXPAND_UNSUCCESSFUL; + + if (p_wic) + options += WILD_ICASE; + + /* find all files that match the description */ + if (ExpandFromContext(xp, file_str, matchcount, matches, options) == FAIL) { + *matchcount = 0; + *matches = NULL; + } + free(file_str); + + return EXPAND_OK; +} + +/* + * Cleanup matches for help tags: remove "@en" if "en" is the only language. + */ +static void cleanup_help_tags(int num_file, char_u **file); + +static void cleanup_help_tags(int num_file, char_u **file) +{ + int i, j; + int len; + + for (i = 0; i < num_file; ++i) { + len = (int)STRLEN(file[i]) - 3; + if (len > 0 && STRCMP(file[i] + len, "@en") == 0) { + /* Sorting on priority means the same item in another language may + * be anywhere. Search all items for a match up to the "@en". */ + for (j = 0; j < num_file; ++j) + if (j != i + && (int)STRLEN(file[j]) == len + 3 + && STRNCMP(file[i], file[j], len + 1) == 0) + break; + if (j == num_file) + file[i][len] = NUL; + } + } +} + +/* + * Do the expansion based on xp->xp_context and "pat". + */ +static int +ExpandFromContext ( + expand_T *xp, + char_u *pat, + int *num_file, + char_u ***file, + int options /* EW_ flags */ +) +{ + regmatch_T regmatch; + int ret; + int flags; + + flags = EW_DIR; /* include directories */ + if (options & WILD_LIST_NOTFOUND) + flags |= EW_NOTFOUND; + if (options & WILD_ADD_SLASH) + flags |= EW_ADDSLASH; + if (options & WILD_KEEP_ALL) + flags |= EW_KEEPALL; + if (options & WILD_SILENT) + flags |= EW_SILENT; + + if (xp->xp_context == EXPAND_FILES + || xp->xp_context == EXPAND_DIRECTORIES + || xp->xp_context == EXPAND_FILES_IN_PATH) { + /* + * Expand file or directory names. + */ + int free_pat = FALSE; + int i; + + /* for ":set path=" and ":set tags=" halve backslashes for escaped + * space */ + if (xp->xp_backslash != XP_BS_NONE) { + free_pat = TRUE; + pat = vim_strsave(pat); + for (i = 0; pat[i]; ++i) + if (pat[i] == '\\') { + if (xp->xp_backslash == XP_BS_THREE + && pat[i + 1] == '\\' + && pat[i + 2] == '\\' + && pat[i + 3] == ' ') + STRMOVE(pat + i, pat + i + 3); + if (xp->xp_backslash == XP_BS_ONE + && pat[i + 1] == ' ') + STRMOVE(pat + i, pat + i + 1); + } + } + + if (xp->xp_context == EXPAND_FILES) + flags |= EW_FILE; + else if (xp->xp_context == EXPAND_FILES_IN_PATH) + flags |= (EW_FILE | EW_PATH); + else + flags = (flags | EW_DIR) & ~EW_FILE; + if (options & WILD_ICASE) + flags |= EW_ICASE; + + /* Expand wildcards, supporting %:h and the like. */ + ret = expand_wildcards_eval(&pat, num_file, file, flags); + if (free_pat) + free(pat); + return ret; + } + + *file = (char_u **)""; + *num_file = 0; + if (xp->xp_context == EXPAND_HELP) { + /* With an empty argument we would get all the help tags, which is + * very slow. Get matches for "help" instead. */ + if (find_help_tags(*pat == NUL ? (char_u *)"help" : pat, + num_file, file, FALSE) == OK) { + cleanup_help_tags(*num_file, *file); + return OK; + } + return FAIL; + } + + if (xp->xp_context == EXPAND_SHELLCMD) + return expand_shellcmd(pat, num_file, file, flags); + if (xp->xp_context == EXPAND_OLD_SETTING) + return ExpandOldSetting(num_file, file); + if (xp->xp_context == EXPAND_BUFFERS) + return ExpandBufnames(pat, num_file, file, options); + if (xp->xp_context == EXPAND_TAGS + || xp->xp_context == EXPAND_TAGS_LISTFILES) + return expand_tags(xp->xp_context == EXPAND_TAGS, pat, num_file, file); + if (xp->xp_context == EXPAND_COLORS) { + char *directories[] = {"colors", NULL}; + return ExpandRTDir(pat, num_file, file, directories); + } + if (xp->xp_context == EXPAND_COMPILER) { + char *directories[] = {"compiler", NULL}; + return ExpandRTDir(pat, num_file, file, directories); + } + if (xp->xp_context == EXPAND_OWNSYNTAX) { + char *directories[] = {"syntax", NULL}; + return ExpandRTDir(pat, num_file, file, directories); + } + if (xp->xp_context == EXPAND_FILETYPE) { + char *directories[] = {"syntax", "indent", "ftplugin", NULL}; + return ExpandRTDir(pat, num_file, file, directories); + } + if (xp->xp_context == EXPAND_USER_LIST) + return ExpandUserList(xp, num_file, file); + + regmatch.regprog = vim_regcomp(pat, p_magic ? RE_MAGIC : 0); + if (regmatch.regprog == NULL) + return FAIL; + + /* set ignore-case according to p_ic, p_scs and pat */ + regmatch.rm_ic = ignorecase(pat); + + if (xp->xp_context == EXPAND_SETTINGS + || xp->xp_context == EXPAND_BOOL_SETTINGS) + ret = ExpandSettings(xp, ®match, num_file, file); + else if (xp->xp_context == EXPAND_MAPPINGS) + ret = ExpandMappings(®match, num_file, file); + else if (xp->xp_context == EXPAND_USER_DEFINED) + ret = ExpandUserDefined(xp, ®match, num_file, file); + else { + static struct expgen { + int context; + char_u *((*func)(expand_T *, int)); + int ic; + int escaped; + } tab[] = + { + {EXPAND_COMMANDS, get_command_name, FALSE, TRUE}, + {EXPAND_BEHAVE, get_behave_arg, TRUE, TRUE}, + {EXPAND_HISTORY, get_history_arg, TRUE, TRUE}, + {EXPAND_USER_COMMANDS, get_user_commands, FALSE, TRUE}, + {EXPAND_USER_CMD_FLAGS, get_user_cmd_flags, FALSE, TRUE}, + {EXPAND_USER_NARGS, get_user_cmd_nargs, FALSE, TRUE}, + {EXPAND_USER_COMPLETE, get_user_cmd_complete, FALSE, TRUE}, + {EXPAND_USER_VARS, get_user_var_name, FALSE, TRUE}, + {EXPAND_FUNCTIONS, get_function_name, FALSE, TRUE}, + {EXPAND_USER_FUNC, get_user_func_name, FALSE, TRUE}, + {EXPAND_EXPRESSION, get_expr_name, FALSE, TRUE}, + {EXPAND_MENUS, get_menu_name, FALSE, TRUE}, + {EXPAND_MENUNAMES, get_menu_names, FALSE, TRUE}, + {EXPAND_SYNTAX, get_syntax_name, TRUE, TRUE}, + {EXPAND_SYNTIME, get_syntime_arg, TRUE, TRUE}, + {EXPAND_HIGHLIGHT, get_highlight_name, TRUE, TRUE}, + {EXPAND_EVENTS, get_event_name, TRUE, TRUE}, + {EXPAND_AUGROUP, get_augroup_name, TRUE, TRUE}, + {EXPAND_CSCOPE, get_cscope_name, TRUE, TRUE}, + {EXPAND_PROFILE, get_profile_name, TRUE, TRUE}, +#ifdef HAVE_WORKING_LIBINTL + {EXPAND_LANGUAGE, get_lang_arg, TRUE, FALSE}, + {EXPAND_LOCALES, get_locales, TRUE, FALSE}, +#endif + {EXPAND_ENV_VARS, get_env_name, TRUE, TRUE}, + {EXPAND_USER, get_users, TRUE, FALSE}, + }; + int i; + + /* + * Find a context in the table and call the ExpandGeneric() with the + * right function to do the expansion. + */ + ret = FAIL; + for (i = 0; i < (int)(sizeof(tab) / sizeof(struct expgen)); ++i) + if (xp->xp_context == tab[i].context) { + if (tab[i].ic) + regmatch.rm_ic = TRUE; + ret = ExpandGeneric(xp, ®match, num_file, file, + tab[i].func, tab[i].escaped); + break; + } + } + + vim_regfree(regmatch.regprog); + + return ret; +} + +/* + * Expand a list of names. + * + * Generic function for command line completion. It calls a function to + * obtain strings, one by one. The strings are matched against a regexp + * program. Matching strings are copied into an array, which is returned. + * + * Returns OK when no problems encountered, FAIL for error (out of memory). + */ +int ExpandGeneric(xp, regmatch, num_file, file, func, escaped) +expand_T *xp; +regmatch_T *regmatch; +int *num_file; +char_u ***file; +char_u *((*func)(expand_T *, int)); +/* returns a string from the list */ +int escaped; +{ + int i; + int count = 0; + char_u *str; + + // count the number of matching names + for (i = 0;; ++i) { + str = (*func)(xp, i); + if (str == NULL) // end of list + break; + if (*str == NUL) // skip empty strings + continue; + if (vim_regexec(regmatch, str, (colnr_T)0)) { + ++count; + } + } + if (count == 0) + return OK; + *num_file = count; + *file = (char_u **)alloc((unsigned)(count * sizeof(char_u *))); + if (*file == NULL) { + *file = (char_u **)""; + return FAIL; + } + + // copy the matching names into allocated memory + count = 0; + for (i = 0;; ++i) { + str = (*func)(xp, i); + if (str == NULL) // end of list + break; + if (*str == NUL) // skip empty strings + continue; + if (vim_regexec(regmatch, str, (colnr_T)0)) { + if (escaped) + str = vim_strsave_escaped(str, (char_u *)" \t\\."); + else + str = vim_strsave(str); + (*file)[count++] = str; + if (func == get_menu_names && str != NULL) { + /* test for separator added by get_menu_names() */ + str += STRLEN(str) - 1; + if (*str == '\001') + *str = '.'; + } + } + } + + /* Sort the results. Keep menu's in the specified order. */ + if (xp->xp_context != EXPAND_MENUNAMES && xp->xp_context != EXPAND_MENUS) { + if (xp->xp_context == EXPAND_EXPRESSION + || xp->xp_context == EXPAND_FUNCTIONS + || xp->xp_context == EXPAND_USER_FUNC) + /* <SNR> functions should be sorted to the end. */ + qsort((void *)*file, (size_t)*num_file, sizeof(char_u *), + sort_func_compare); + else + sort_strings(*file, *num_file); + } + + /* Reset the variables used for special highlight names expansion, so that + * they don't show up when getting normal highlight names by ID. */ + reset_expand_highlight(); + + return OK; +} + +/* + * Complete a shell command. + * Returns FAIL or OK; + */ +static int +expand_shellcmd ( + char_u *filepat, /* pattern to match with command names */ + int *num_file, /* return: number of matches */ + char_u ***file, /* return: array with matches */ + int flagsarg /* EW_ flags */ +) +{ + char_u *pat; + int i; + char_u *path; + int mustfree = FALSE; + garray_T ga; + char_u *buf = alloc(MAXPATHL); + size_t l; + char_u *s, *e; + int flags = flagsarg; + int ret; + + if (buf == NULL) + return FAIL; + + /* for ":set path=" and ":set tags=" halve backslashes for escaped + * space */ + pat = vim_strsave(filepat); + for (i = 0; pat[i]; ++i) + if (pat[i] == '\\' && pat[i + 1] == ' ') + STRMOVE(pat + i, pat + i + 1); + + flags |= EW_FILE | EW_EXEC; + + /* For an absolute name we don't use $PATH. */ + if (path_is_absolute_path(pat)) + path = (char_u *)" "; + else if ((pat[0] == '.' && (vim_ispathsep(pat[1]) + || (pat[1] == '.' && vim_ispathsep(pat[2]))))) + path = (char_u *)"."; + else { + path = vim_getenv((char_u *)"PATH", &mustfree); + if (path == NULL) + path = (char_u *)""; + } + + /* + * Go over all directories in $PATH. Expand matches in that directory and + * collect them in "ga". + */ + ga_init(&ga, (int)sizeof(char *), 10); + for (s = path; *s != NUL; s = e) { + if (*s == ' ') + ++s; /* Skip space used for absolute path name. */ + + e = vim_strchr(s, ':'); + if (e == NULL) + e = s + STRLEN(s); + + l = e - s; + if (l > MAXPATHL - 5) + break; + vim_strncpy(buf, s, l); + add_pathsep(buf); + l = STRLEN(buf); + vim_strncpy(buf + l, pat, MAXPATHL - 1 - l); + + /* Expand matches in one directory of $PATH. */ + ret = expand_wildcards(1, &buf, num_file, file, flags); + if (ret == OK) { + ga_grow(&ga, *num_file); + { + for (i = 0; i < *num_file; ++i) { + s = (*file)[i]; + if (STRLEN(s) > l) { + /* Remove the path again. */ + STRMOVE(s, s + l); + ((char_u **)ga.ga_data)[ga.ga_len++] = s; + } else + free(s); + } + free(*file); + } + } + if (*e != NUL) + ++e; + } + *file = ga.ga_data; + *num_file = ga.ga_len; + + free(buf); + free(pat); + if (mustfree) + free(path); + return OK; +} + +typedef void *(*user_expand_func_T)(char_u *, int, char_u **, int); +static void * call_user_expand_func(user_expand_func_T user_expand_func, + expand_T *xp, int *num_file, + char_u ***file); + +/* + * Call "user_expand_func()" to invoke a user defined VimL function and return + * the result (either a string or a List). + */ +static void * call_user_expand_func(user_expand_func, xp, num_file, file) +user_expand_func_T user_expand_func; +expand_T *xp; +int *num_file; +char_u ***file; +{ + int keep = 0; + char_u num[50]; + char_u *args[3]; + int save_current_SID = current_SID; + void *ret; + struct cmdline_info save_ccline; + + if (xp->xp_arg == NULL || xp->xp_arg[0] == '\0' || xp->xp_line == NULL) + return NULL; + *num_file = 0; + *file = NULL; + + if (ccline.cmdbuff != NULL) { + keep = ccline.cmdbuff[ccline.cmdlen]; + ccline.cmdbuff[ccline.cmdlen] = 0; + } + + args[0] = vim_strnsave(xp->xp_pattern, xp->xp_pattern_len); + args[1] = xp->xp_line; + sprintf((char *)num, "%d", xp->xp_col); + args[2] = num; + + /* Save the cmdline, we don't know what the function may do. */ + save_ccline = ccline; + ccline.cmdbuff = NULL; + ccline.cmdprompt = NULL; + current_SID = xp->xp_scriptID; + + ret = user_expand_func(xp->xp_arg, 3, args, FALSE); + + ccline = save_ccline; + current_SID = save_current_SID; + if (ccline.cmdbuff != NULL) + ccline.cmdbuff[ccline.cmdlen] = keep; + + free(args[0]); + return ret; +} + +/* + * Expand names with a function defined by the user. + */ +static int ExpandUserDefined(expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file) +{ + char_u *retstr; + char_u *s; + char_u *e; + char_u keep; + garray_T ga; + + retstr = call_user_expand_func(call_func_retstr, xp, num_file, file); + if (retstr == NULL) + return FAIL; + + ga_init(&ga, (int)sizeof(char *), 3); + for (s = retstr; *s != NUL; s = e) { + e = vim_strchr(s, '\n'); + if (e == NULL) + e = s + STRLEN(s); + keep = *e; + *e = 0; + + if (xp->xp_pattern[0] && vim_regexec(regmatch, s, (colnr_T)0) == 0) { + *e = keep; + if (*e != NUL) + ++e; + continue; + } + + ga_grow(&ga, 1); + + ((char_u **)ga.ga_data)[ga.ga_len] = vim_strnsave(s, (int)(e - s)); + ++ga.ga_len; + + *e = keep; + if (*e != NUL) + ++e; + } + free(retstr); + *file = ga.ga_data; + *num_file = ga.ga_len; + return OK; +} + +/* + * Expand names with a list returned by a function defined by the user. + */ +static int ExpandUserList(expand_T *xp, int *num_file, char_u ***file) +{ + list_T *retlist; + listitem_T *li; + garray_T ga; + + retlist = call_user_expand_func(call_func_retlist, xp, num_file, file); + if (retlist == NULL) + return FAIL; + + ga_init(&ga, (int)sizeof(char *), 3); + /* Loop over the items in the list. */ + for (li = retlist->lv_first; li != NULL; li = li->li_next) { + if (li->li_tv.v_type != VAR_STRING || li->li_tv.vval.v_string == NULL) + continue; /* Skip non-string items and empty strings */ + + ga_grow(&ga, 1); + + ((char_u **)ga.ga_data)[ga.ga_len] = + vim_strsave(li->li_tv.vval.v_string); + ++ga.ga_len; + } + list_unref(retlist); + + *file = ga.ga_data; + *num_file = ga.ga_len; + return OK; +} + +/* + * Expand color scheme, compiler or filetype names: + * 'runtimepath'/{dirnames}/{pat}.vim + * "dirnames" is an array with one or more directory names. + */ +static int ExpandRTDir(char_u *pat, int *num_file, char_u ***file, char *dirnames[]) +{ + char_u *matches; + char_u *s; + char_u *e; + garray_T ga; + int i; + int pat_len; + + *num_file = 0; + *file = NULL; + pat_len = (int)STRLEN(pat); + ga_init(&ga, (int)sizeof(char *), 10); + + for (i = 0; dirnames[i] != NULL; ++i) { + s = alloc((unsigned)(STRLEN(dirnames[i]) + pat_len + 7)); + if (s == NULL) { + ga_clear_strings(&ga); + return FAIL; + } + sprintf((char *)s, "%s/%s*.vim", dirnames[i], pat); + matches = globpath(p_rtp, s, 0); + free(s); + if (matches == NULL) + continue; + + for (s = matches; *s != NUL; s = e) { + e = vim_strchr(s, '\n'); + if (e == NULL) + e = s + STRLEN(s); + ga_grow(&ga, 1); + if (e - 4 > s && STRNICMP(e - 4, ".vim", 4) == 0) { + for (s = e - 4; s > matches; mb_ptr_back(matches, s)) + if (*s == '\n' || vim_ispathsep(*s)) + break; + ++s; + ((char_u **)ga.ga_data)[ga.ga_len] = + vim_strnsave(s, (int)(e - s - 4)); + ++ga.ga_len; + } + if (*e != NUL) + ++e; + } + free(matches); + } + if (ga.ga_len == 0) + return FAIL; + + /* Sort and remove duplicates which can happen when specifying multiple + * directories in dirnames. */ + ga_remove_duplicate_strings(&ga); + + *file = ga.ga_data; + *num_file = ga.ga_len; + return OK; +} + + +/* + * Expand "file" for all comma-separated directories in "path". + * Returns an allocated string with all matches concatenated, separated by + * newlines. Returns NULL for an error or no matches. + */ +char_u *globpath(char_u *path, char_u *file, int expand_options) +{ + expand_T xpc; + char_u *buf; + garray_T ga; + int i; + int len; + int num_p; + char_u **p; + char_u *cur = NULL; + + buf = alloc(MAXPATHL); + if (buf == NULL) + return NULL; + + ExpandInit(&xpc); + xpc.xp_context = EXPAND_FILES; + + ga_init(&ga, 1, 100); + + /* Loop over all entries in {path}. */ + while (*path != NUL) { + /* Copy one item of the path to buf[] and concatenate the file name. */ + copy_option_part(&path, buf, MAXPATHL, ","); + if (STRLEN(buf) + STRLEN(file) + 2 < MAXPATHL) { + add_pathsep(buf); + STRCAT(buf, file); + if (ExpandFromContext(&xpc, buf, &num_p, &p, + WILD_SILENT|expand_options) != FAIL && num_p > 0) { + ExpandEscape(&xpc, buf, num_p, p, WILD_SILENT|expand_options); + for (len = 0, i = 0; i < num_p; ++i) + len += (int)STRLEN(p[i]) + 1; + + /* Concatenate new results to previous ones. */ + ga_grow(&ga, len); + cur = (char_u *)ga.ga_data + ga.ga_len; + for (i = 0; i < num_p; ++i) { + STRCPY(cur, p[i]); + cur += STRLEN(p[i]); + *cur++ = '\n'; + } + ga.ga_len += len; + + FreeWild(num_p, p); + } + } + } + if (cur != NULL) + *--cur = 0; /* Replace trailing newline with NUL */ + + free(buf); + return (char_u *)ga.ga_data; +} + + + +/********************************* +* Command line history stuff * +*********************************/ + +/* + * Translate a history character to the associated type number. + */ +static int hist_char2type(int c) +{ + if (c == ':') + return HIST_CMD; + if (c == '=') + return HIST_EXPR; + if (c == '@') + return HIST_INPUT; + if (c == '>') + return HIST_DEBUG; + return HIST_SEARCH; /* must be '?' or '/' */ +} + +/* + * Table of history names. + * These names are used in :history and various hist...() functions. + * It is sufficient to give the significant prefix of a history name. + */ + +static char *(history_names[]) = +{ + "cmd", + "search", + "expr", + "input", + "debug", + NULL +}; + +/* + * Function given to ExpandGeneric() to obtain the possible first + * arguments of the ":history command. + */ +static char_u *get_history_arg(expand_T *xp, int idx) +{ + static char_u compl[2] = { NUL, NUL }; + char *short_names = ":=@>?/"; + int short_names_count = (int)STRLEN(short_names); + int history_name_count = sizeof(history_names) / sizeof(char *) - 1; + + if (idx < short_names_count) { + compl[0] = (char_u)short_names[idx]; + return compl; + } + if (idx < short_names_count + history_name_count) + return (char_u *)history_names[idx - short_names_count]; + if (idx == short_names_count + history_name_count) + return (char_u *)"all"; + return NULL; +} + +/* + * init_history() - Initialize the command line history. + * Also used to re-allocate the history when the size changes. + */ +void init_history(void) +{ + /* + * If size of history table changed, reallocate it + */ + ssize_t newlen = p_hi; + if (newlen != hislen) { + histentry_T *temp; + ssize_t i; + ssize_t j; + + // adjust the tables + for (int type = 0; type < HIST_COUNT; ++type) { + if (newlen) { + temp = xmalloc(newlen * sizeof(*temp)); + } else + temp = NULL; + if (newlen == 0 || temp != NULL) { + if (hisidx[type] < 0) { /* there are no entries yet */ + for (i = 0; i < newlen; ++i) + clear_hist_entry(&temp[i]); + } else if (newlen > hislen) { /* array becomes bigger */ + for (i = 0; i <= hisidx[type]; ++i) + temp[i] = history[type][i]; + j = i; + for (; i <= newlen - (hislen - hisidx[type]); ++i) + clear_hist_entry(&temp[i]); + for (; j < hislen; ++i, ++j) + temp[i] = history[type][j]; + } else { /* array becomes smaller or 0 */ + j = hisidx[type]; + for (i = newlen - 1;; --i) { + if (i >= 0) /* copy newest entries */ + temp[i] = history[type][j]; + else /* remove older entries */ + free(history[type][j].hisstr); + if (--j < 0) + j = hislen - 1; + if (j == hisidx[type]) + break; + } + hisidx[type] = newlen - 1; + } + free(history[type]); + history[type] = temp; + } + } + hislen = newlen; + } +} + +static void clear_hist_entry(histentry_T *hisptr) +{ + hisptr->hisnum = 0; + hisptr->viminfo = FALSE; + hisptr->hisstr = NULL; +} + +/* + * Check if command line 'str' is already in history. + * If 'move_to_front' is TRUE, matching entry is moved to end of history. + */ +static int +in_history ( + int type, + char_u *str, + int move_to_front, /* Move the entry to the front if it exists */ + int sep, + int writing /* ignore entries read from viminfo */ +) +{ + int i; + int last_i = -1; + char_u *p; + + if (hisidx[type] < 0) + return FALSE; + i = hisidx[type]; + do { + if (history[type][i].hisstr == NULL) + return FALSE; + + /* For search history, check that the separator character matches as + * well. */ + p = history[type][i].hisstr; + if (STRCMP(str, p) == 0 + && !(writing && history[type][i].viminfo) + && (type != HIST_SEARCH || sep == p[STRLEN(p) + 1])) { + if (!move_to_front) + return TRUE; + last_i = i; + break; + } + if (--i < 0) + i = hislen - 1; + } while (i != hisidx[type]); + + if (last_i >= 0) { + str = history[type][i].hisstr; + while (i != hisidx[type]) { + if (++i >= hislen) + i = 0; + history[type][last_i] = history[type][i]; + last_i = i; + } + history[type][i].hisnum = ++hisnum[type]; + history[type][i].viminfo = FALSE; + history[type][i].hisstr = str; + return TRUE; + } + return FALSE; +} + +/* + * Convert history name (from table above) to its HIST_ equivalent. + * When "name" is empty, return "cmd" history. + * Returns -1 for unknown history name. + */ +int get_histtype(char_u *name) +{ + int i; + int len = (int)STRLEN(name); + + /* No argument: use current history. */ + if (len == 0) + return hist_char2type(ccline.cmdfirstc); + + for (i = 0; history_names[i] != NULL; ++i) + if (STRNICMP(name, history_names[i], len) == 0) + return i; + + if (vim_strchr((char_u *)":=@>?/", name[0]) != NULL && name[1] == NUL) + return hist_char2type(name[0]); + + return -1; +} + +static int last_maptick = -1; /* last seen maptick */ + +/* + * Add the given string to the given history. If the string is already in the + * history then it is moved to the front. "histype" may be one of he HIST_ + * values. + */ +void +add_to_history ( + int histype, + char_u *new_entry, + int in_map, /* consider maptick when inside a mapping */ + int sep /* separator character used (search hist) */ +) +{ + histentry_T *hisptr; + int len; + + if (hislen == 0) /* no history */ + return; + + if (cmdmod.keeppatterns && histype == HIST_SEARCH) + return; + + /* + * Searches inside the same mapping overwrite each other, so that only + * the last line is kept. Be careful not to remove a line that was moved + * down, only lines that were added. + */ + if (histype == HIST_SEARCH && in_map) { + if (maptick == last_maptick) { + /* Current line is from the same mapping, remove it */ + hisptr = &history[HIST_SEARCH][hisidx[HIST_SEARCH]]; + free(hisptr->hisstr); + clear_hist_entry(hisptr); + --hisnum[histype]; + if (--hisidx[HIST_SEARCH] < 0) + hisidx[HIST_SEARCH] = hislen - 1; + } + last_maptick = -1; + } + if (!in_history(histype, new_entry, TRUE, sep, FALSE)) { + if (++hisidx[histype] == hislen) + hisidx[histype] = 0; + hisptr = &history[histype][hisidx[histype]]; + free(hisptr->hisstr); + + /* Store the separator after the NUL of the string. */ + len = (int)STRLEN(new_entry); + hisptr->hisstr = vim_strnsave(new_entry, len + 2); + if (hisptr->hisstr != NULL) + hisptr->hisstr[len + 1] = sep; + + hisptr->hisnum = ++hisnum[histype]; + hisptr->viminfo = FALSE; + if (histype == HIST_SEARCH && in_map) + last_maptick = maptick; + } +} + + +/* + * Get identifier of newest history entry. + * "histype" may be one of the HIST_ values. + */ +int get_history_idx(int histype) +{ + if (hislen == 0 || histype < 0 || histype >= HIST_COUNT + || hisidx[histype] < 0) + return -1; + + return history[histype][hisidx[histype]].hisnum; +} + +static struct cmdline_info *get_ccline_ptr(void); + +/* + * Get pointer to the command line info to use. cmdline_paste() may clear + * ccline and put the previous value in prev_ccline. + */ +static struct cmdline_info *get_ccline_ptr(void) +{ + if ((State & CMDLINE) == 0) + return NULL; + if (ccline.cmdbuff != NULL) + return &ccline; + if (prev_ccline_used && prev_ccline.cmdbuff != NULL) + return &prev_ccline; + return NULL; +} + +/* + * Get the current command line in allocated memory. + * Only works when the command line is being edited. + * Returns NULL when something is wrong. + */ +char_u *get_cmdline_str(void) +{ + struct cmdline_info *p = get_ccline_ptr(); + + if (p == NULL) + return NULL; + return vim_strnsave(p->cmdbuff, p->cmdlen); +} + +/* + * Get the current command line position, counted in bytes. + * Zero is the first position. + * Only works when the command line is being edited. + * Returns -1 when something is wrong. + */ +int get_cmdline_pos(void) +{ + struct cmdline_info *p = get_ccline_ptr(); + + if (p == NULL) + return -1; + return p->cmdpos; +} + +/* + * Set the command line byte position to "pos". Zero is the first position. + * Only works when the command line is being edited. + * Returns 1 when failed, 0 when OK. + */ +int set_cmdline_pos(int pos) +{ + struct cmdline_info *p = get_ccline_ptr(); + + if (p == NULL) + return 1; + + /* The position is not set directly but after CTRL-\ e or CTRL-R = has + * changed the command line. */ + if (pos < 0) + new_cmdpos = 0; + else + new_cmdpos = pos; + return 0; +} + +/* + * Get the current command-line type. + * Returns ':' or '/' or '?' or '@' or '>' or '-' + * Only works when the command line is being edited. + * Returns NUL when something is wrong. + */ +int get_cmdline_type(void) +{ + struct cmdline_info *p = get_ccline_ptr(); + + if (p == NULL) + return NUL; + if (p->cmdfirstc == NUL) + return (p->input_fn) ? '@' : '-'; + return p->cmdfirstc; +} + +/* + * Calculate history index from a number: + * num > 0: seen as identifying number of a history entry + * num < 0: relative position in history wrt newest entry + * "histype" may be one of the HIST_ values. + */ +static int calc_hist_idx(int histype, int num) +{ + int i; + histentry_T *hist; + int wrapped = FALSE; + + if (hislen == 0 || histype < 0 || histype >= HIST_COUNT + || (i = hisidx[histype]) < 0 || num == 0) + return -1; + + hist = history[histype]; + if (num > 0) { + while (hist[i].hisnum > num) + if (--i < 0) { + if (wrapped) + break; + i += hislen; + wrapped = TRUE; + } + if (hist[i].hisnum == num && hist[i].hisstr != NULL) + return i; + } else if (-num <= hislen) { + i += num + 1; + if (i < 0) + i += hislen; + if (hist[i].hisstr != NULL) + return i; + } + return -1; +} + +/* + * Get a history entry by its index. + * "histype" may be one of the HIST_ values. + */ +char_u *get_history_entry(int histype, int idx) +{ + idx = calc_hist_idx(histype, idx); + if (idx >= 0) + return history[histype][idx].hisstr; + else + return (char_u *)""; +} + +/* + * Clear all entries of a history. + * "histype" may be one of the HIST_ values. + */ +int clr_history(int histype) +{ + int i; + histentry_T *hisptr; + + if (hislen != 0 && histype >= 0 && histype < HIST_COUNT) { + hisptr = history[histype]; + for (i = hislen; i--; ) { + free(hisptr->hisstr); + clear_hist_entry(hisptr); + } + hisidx[histype] = -1; /* mark history as cleared */ + hisnum[histype] = 0; /* reset identifier counter */ + return OK; + } + return FAIL; +} + +/* + * Remove all entries matching {str} from a history. + * "histype" may be one of the HIST_ values. + */ +int del_history_entry(int histype, char_u *str) +{ + regmatch_T regmatch; + histentry_T *hisptr; + int idx; + int i; + int last; + int found = FALSE; + + regmatch.regprog = NULL; + regmatch.rm_ic = FALSE; /* always match case */ + if (hislen != 0 + && histype >= 0 + && histype < HIST_COUNT + && *str != NUL + && (idx = hisidx[histype]) >= 0 + && (regmatch.regprog = vim_regcomp(str, RE_MAGIC + RE_STRING)) + != NULL) { + i = last = idx; + do { + hisptr = &history[histype][i]; + if (hisptr->hisstr == NULL) + break; + if (vim_regexec(®match, hisptr->hisstr, (colnr_T)0)) { + found = TRUE; + free(hisptr->hisstr); + clear_hist_entry(hisptr); + } else { + if (i != last) { + history[histype][last] = *hisptr; + clear_hist_entry(hisptr); + } + if (--last < 0) + last += hislen; + } + if (--i < 0) + i += hislen; + } while (i != idx); + if (history[histype][idx].hisstr == NULL) + hisidx[histype] = -1; + } + vim_regfree(regmatch.regprog); + return found; +} + +/* + * Remove an indexed entry from a history. + * "histype" may be one of the HIST_ values. + */ +int del_history_idx(int histype, int idx) +{ + int i, j; + + i = calc_hist_idx(histype, idx); + if (i < 0) + return FALSE; + idx = hisidx[histype]; + free(history[histype][i].hisstr); + + /* When deleting the last added search string in a mapping, reset + * last_maptick, so that the last added search string isn't deleted again. + */ + if (histype == HIST_SEARCH && maptick == last_maptick && i == idx) + last_maptick = -1; + + while (i != idx) { + j = (i + 1) % hislen; + history[histype][i] = history[histype][j]; + i = j; + } + clear_hist_entry(&history[histype][i]); + if (--i < 0) + i += hislen; + hisidx[histype] = i; + return TRUE; +} + + +/* + * Very specific function to remove the value in ":set key=val" from the + * history. + */ +void remove_key_from_history(void) +{ + char_u *p; + int i; + + i = hisidx[HIST_CMD]; + if (i < 0) + return; + p = history[HIST_CMD][i].hisstr; + if (p != NULL) + for (; *p; ++p) + if (STRNCMP(p, "key", 3) == 0 && !isalpha(p[3])) { + p = vim_strchr(p + 3, '='); + if (p == NULL) + break; + ++p; + for (i = 0; p[i] && !vim_iswhite(p[i]); ++i) + if (p[i] == '\\' && p[i + 1]) + ++i; + STRMOVE(p, p + i); + --p; + } +} + +/* + * Get indices "num1,num2" that specify a range within a list (not a range of + * text lines in a buffer!) from a string. Used for ":history" and ":clist". + * Returns OK if parsed successfully, otherwise FAIL. + */ +int get_list_range(char_u **str, int *num1, int *num2) +{ + int len; + int first = FALSE; + long num; + + *str = skipwhite(*str); + if (**str == '-' || vim_isdigit(**str)) { /* parse "from" part of range */ + vim_str2nr(*str, NULL, &len, FALSE, FALSE, &num, NULL); + *str += len; + *num1 = (int)num; + first = TRUE; + } + *str = skipwhite(*str); + if (**str == ',') { /* parse "to" part of range */ + *str = skipwhite(*str + 1); + vim_str2nr(*str, NULL, &len, FALSE, FALSE, &num, NULL); + if (len > 0) { + *num2 = (int)num; + *str = skipwhite(*str + len); + } else if (!first) /* no number given at all */ + return FAIL; + } else if (first) /* only one number given */ + *num2 = *num1; + return OK; +} + +/* + * :history command - print a history + */ +void ex_history(exarg_T *eap) +{ + histentry_T *hist; + int histype1 = HIST_CMD; + int histype2 = HIST_CMD; + int hisidx1 = 1; + int hisidx2 = -1; + int idx; + int i, j, k; + char_u *end; + char_u *arg = eap->arg; + + if (hislen == 0) { + MSG(_("'history' option is zero")); + return; + } + + if (!(VIM_ISDIGIT(*arg) || *arg == '-' || *arg == ',')) { + end = arg; + while (ASCII_ISALPHA(*end) + || vim_strchr((char_u *)":=@>/?", *end) != NULL) + end++; + i = *end; + *end = NUL; + histype1 = get_histtype(arg); + if (histype1 == -1) { + if (STRNICMP(arg, "all", STRLEN(arg)) == 0) { + histype1 = 0; + histype2 = HIST_COUNT-1; + } else { + *end = i; + EMSG(_(e_trailing)); + return; + } + } else + histype2 = histype1; + *end = i; + } else + end = arg; + if (!get_list_range(&end, &hisidx1, &hisidx2) || *end != NUL) { + EMSG(_(e_trailing)); + return; + } + + for (; !got_int && histype1 <= histype2; ++histype1) { + STRCPY(IObuff, "\n # "); + STRCAT(STRCAT(IObuff, history_names[histype1]), " history"); + MSG_PUTS_TITLE(IObuff); + idx = hisidx[histype1]; + hist = history[histype1]; + j = hisidx1; + k = hisidx2; + if (j < 0) + j = (-j > hislen) ? 0 : hist[(hislen+j+idx+1) % hislen].hisnum; + if (k < 0) + k = (-k > hislen) ? 0 : hist[(hislen+k+idx+1) % hislen].hisnum; + if (idx >= 0 && j <= k) + for (i = idx + 1; !got_int; ++i) { + if (i == hislen) + i = 0; + if (hist[i].hisstr != NULL + && hist[i].hisnum >= j && hist[i].hisnum <= k) { + msg_putchar('\n'); + sprintf((char *)IObuff, "%c%6d ", i == idx ? '>' : ' ', + hist[i].hisnum); + if (vim_strsize(hist[i].hisstr) > (int)Columns - 10) + trunc_string(hist[i].hisstr, IObuff + STRLEN(IObuff), + (int)Columns - 10, IOSIZE - (int)STRLEN(IObuff)); + else + STRCAT(IObuff, hist[i].hisstr); + msg_outtrans(IObuff); + out_flush(); + } + if (i == idx) + break; + } + } +} + +/* + * Buffers for history read from a viminfo file. Only valid while reading. + */ +static char_u **viminfo_history[HIST_COUNT] = {NULL, NULL, NULL, NULL}; +static int viminfo_hisidx[HIST_COUNT] = {0, 0, 0, 0}; +static int viminfo_hislen[HIST_COUNT] = {0, 0, 0, 0}; +static int viminfo_add_at_front = FALSE; + +static int hist_type2char(int type, int use_question); + +/* + * Translate a history type number to the associated character. + */ +static int +hist_type2char ( + int type, + int use_question /* use '?' instead of '/' */ +) +{ + if (type == HIST_CMD) + return ':'; + if (type == HIST_SEARCH) { + if (use_question) + return '?'; + else + return '/'; + } + if (type == HIST_EXPR) + return '='; + return '@'; +} + +/* + * Prepare for reading the history from the viminfo file. + * This allocates history arrays to store the read history lines. + */ +void prepare_viminfo_history(int asklen, int writing) +{ + int i; + int num; + + init_history(); + viminfo_add_at_front = (asklen != 0 && !writing); + if (asklen > hislen) + asklen = hislen; + + for (int type = 0; type < HIST_COUNT; ++type) { + /* Count the number of empty spaces in the history list. Entries read + * from viminfo previously are also considered empty. If there are + * more spaces available than we request, then fill them up. */ + for (i = 0, num = 0; i < hislen; i++) + if (history[type][i].hisstr == NULL || history[type][i].viminfo) + num++; + int len = asklen; + if (num > len) + len = num; + if (len <= 0) + viminfo_history[type] = NULL; + else + viminfo_history[type] = xmalloc(len * sizeof(char_u *)); + if (viminfo_history[type] == NULL) + len = 0; + viminfo_hislen[type] = len; + viminfo_hisidx[type] = 0; + } +} + +/* + * Accept a line from the viminfo, store it in the history array when it's + * new. + */ +int read_viminfo_history(vir_T *virp, int writing) +{ + int type; + char_u *val; + + type = hist_char2type(virp->vir_line[0]); + if (viminfo_hisidx[type] < viminfo_hislen[type]) { + val = viminfo_readstring(virp, 1, TRUE); + if (val != NULL && *val != NUL) { + int sep = (*val == ' ' ? NUL : *val); + + if (!in_history(type, val + (type == HIST_SEARCH), + viminfo_add_at_front, sep, writing)) { + /* Need to re-allocate to append the separator byte. */ + size_t len = STRLEN(val); + char_u *p = xmalloc(len + 2); + if (type == HIST_SEARCH) { + /* Search entry: Move the separator from the first + * column to after the NUL. */ + memmove(p, val + 1, len); + p[len] = sep; + } else { + /* Not a search entry: No separator in the viminfo + * file, add a NUL separator. */ + memmove(p, val, len + 1); + p[len + 1] = NUL; + } + viminfo_history[type][viminfo_hisidx[type]++] = p; + } + } + free(val); + } + return viminfo_readline(virp); +} + +/* + * Finish reading history lines from viminfo. Not used when writing viminfo. + */ +void finish_viminfo_history(void) +{ + int idx; + int i; + int type; + + for (type = 0; type < HIST_COUNT; ++type) { + if (history[type] == NULL) + continue; + idx = hisidx[type] + viminfo_hisidx[type]; + if (idx >= hislen) + idx -= hislen; + else if (idx < 0) + idx = hislen - 1; + if (viminfo_add_at_front) + hisidx[type] = idx; + else { + if (hisidx[type] == -1) + hisidx[type] = hislen - 1; + do { + if (history[type][idx].hisstr != NULL + || history[type][idx].viminfo) + break; + if (++idx == hislen) + idx = 0; + } while (idx != hisidx[type]); + if (idx != hisidx[type] && --idx < 0) + idx = hislen - 1; + } + for (i = 0; i < viminfo_hisidx[type]; i++) { + free(history[type][idx].hisstr); + history[type][idx].hisstr = viminfo_history[type][i]; + history[type][idx].viminfo = TRUE; + if (--idx < 0) + idx = hislen - 1; + } + idx += 1; + idx %= hislen; + for (i = 0; i < viminfo_hisidx[type]; i++) { + history[type][idx++].hisnum = ++hisnum[type]; + idx %= hislen; + } + free(viminfo_history[type]); + viminfo_history[type] = NULL; + viminfo_hisidx[type] = 0; + } +} + +/* + * Write history to viminfo file in "fp". + * When "merge" is TRUE merge history lines with a previously read viminfo + * file, data is in viminfo_history[]. + * When "merge" is FALSE just write all history lines. Used for ":wviminfo!". + */ +void write_viminfo_history(FILE *fp, int merge) +{ + int i; + int type; + int num_saved; + char_u *p; + int c; + int round; + + init_history(); + if (hislen == 0) + return; + for (type = 0; type < HIST_COUNT; ++type) { + num_saved = get_viminfo_parameter(hist_type2char(type, FALSE)); + if (num_saved == 0) + continue; + if (num_saved < 0) /* Use default */ + num_saved = hislen; + fprintf(fp, _("\n# %s History (newest to oldest):\n"), + type == HIST_CMD ? _("Command Line") : + type == HIST_SEARCH ? _("Search String") : + type == HIST_EXPR ? _("Expression") : + _("Input Line")); + if (num_saved > hislen) + num_saved = hislen; + + /* + * Merge typed and viminfo history: + * round 1: history of typed commands. + * round 2: history from recently read viminfo. + */ + for (round = 1; round <= 2; ++round) { + if (round == 1) + /* start at newest entry, somewhere in the list */ + i = hisidx[type]; + else if (viminfo_hisidx[type] > 0) + /* start at newest entry, first in the list */ + i = 0; + else + /* empty list */ + i = -1; + if (i >= 0) + while (num_saved > 0 + && !(round == 2 && i >= viminfo_hisidx[type])) { + p = round == 1 ? history[type][i].hisstr + : viminfo_history[type] == NULL ? NULL + : viminfo_history[type][i]; + if (p != NULL && (round == 2 + || !merge + || !history[type][i].viminfo)) { + --num_saved; + fputc(hist_type2char(type, TRUE), fp); + /* For the search history: put the separator in the + * second column; use a space if there isn't one. */ + if (type == HIST_SEARCH) { + c = p[STRLEN(p) + 1]; + putc(c == NUL ? ' ' : c, fp); + } + viminfo_writestring(fp, p); + } + if (round == 1) { + /* Decrement index, loop around and stop when back at + * the start. */ + if (--i < 0) + i = hislen - 1; + if (i == hisidx[type]) + break; + } else { + /* Increment index. Stop at the end in the while. */ + ++i; + } + } + } + for (i = 0; i < viminfo_hisidx[type]; ++i) + if (viminfo_history[type] != NULL) + free(viminfo_history[type][i]); + free(viminfo_history[type]); + viminfo_history[type] = NULL; + viminfo_hisidx[type] = 0; + } +} + +/* + * Write a character at the current cursor+offset position. + * It is directly written into the command buffer block. + */ +void cmd_pchar(int c, int offset) +{ + if (ccline.cmdpos + offset >= ccline.cmdlen || ccline.cmdpos + offset < 0) { + EMSG(_("E198: cmd_pchar beyond the command length")); + return; + } + ccline.cmdbuff[ccline.cmdpos + offset] = (char_u)c; + ccline.cmdbuff[ccline.cmdlen] = NUL; +} + +int cmd_gchar(int offset) +{ + if (ccline.cmdpos + offset >= ccline.cmdlen || ccline.cmdpos + offset < 0) { + /* EMSG(_("cmd_gchar beyond the command length")); */ + return NUL; + } + return (int)ccline.cmdbuff[ccline.cmdpos + offset]; +} + +/* + * Open a window on the current command line and history. Allow editing in + * the window. Returns when the window is closed. + * Returns: + * CR if the command is to be executed + * Ctrl_C if it is to be abandoned + * K_IGNORE if editing continues + */ +static int ex_window(void) +{ + struct cmdline_info save_ccline; + buf_T *old_curbuf = curbuf; + win_T *old_curwin = curwin; + buf_T *bp; + win_T *wp; + int i; + linenr_T lnum; + int histtype; + garray_T winsizes; + char_u typestr[2]; + int save_restart_edit = restart_edit; + int save_State = State; + int save_exmode = exmode_active; + int save_cmdmsg_rl = cmdmsg_rl; + + /* Can't do this recursively. Can't do it when typing a password. */ + if (cmdwin_type != 0 + || cmdline_star > 0 + ) { + beep_flush(); + return K_IGNORE; + } + + /* Save current window sizes. */ + win_size_save(&winsizes); + + /* Don't execute autocommands while creating the window. */ + block_autocmds(); + /* don't use a new tab page */ + cmdmod.tab = 0; + + /* Create a window for the command-line buffer. */ + if (win_split((int)p_cwh, WSP_BOT) == FAIL) { + beep_flush(); + unblock_autocmds(); + return K_IGNORE; + } + cmdwin_type = get_cmdline_type(); + + /* Create the command-line buffer empty. */ + (void)do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, NULL); + (void)setfname(curbuf, (char_u *)"[Command Line]", NULL, TRUE); + set_option_value((char_u *)"bt", 0L, (char_u *)"nofile", OPT_LOCAL); + set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL); + curbuf->b_p_ma = TRUE; + curwin->w_p_fen = FALSE; + curwin->w_p_rl = cmdmsg_rl; + cmdmsg_rl = FALSE; + RESET_BINDING(curwin); + + /* Do execute autocommands for setting the filetype (load syntax). */ + unblock_autocmds(); + + /* Showing the prompt may have set need_wait_return, reset it. */ + need_wait_return = FALSE; + + histtype = hist_char2type(cmdwin_type); + if (histtype == HIST_CMD || histtype == HIST_DEBUG) { + if (p_wc == TAB) { + add_map((char_u *)"<buffer> <Tab> <C-X><C-V>", INSERT); + add_map((char_u *)"<buffer> <Tab> a<C-X><C-V>", NORMAL); + } + set_option_value((char_u *)"ft", 0L, (char_u *)"vim", OPT_LOCAL); + } + + /* Reset 'textwidth' after setting 'filetype' (the Vim filetype plugin + * sets 'textwidth' to 78). */ + curbuf->b_p_tw = 0; + + /* Fill the buffer with the history. */ + init_history(); + if (hislen > 0) { + i = hisidx[histtype]; + if (i >= 0) { + lnum = 0; + do { + if (++i == hislen) + i = 0; + if (history[histtype][i].hisstr != NULL) + ml_append(lnum++, history[histtype][i].hisstr, + (colnr_T)0, FALSE); + } while (i != hisidx[histtype]); + } + } + + /* Replace the empty last line with the current command-line and put the + * cursor there. */ + ml_replace(curbuf->b_ml.ml_line_count, ccline.cmdbuff, TRUE); + curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; + curwin->w_cursor.col = ccline.cmdpos; + changed_line_abv_curs(); + invalidate_botline(); + redraw_later(SOME_VALID); + + /* Save the command line info, can be used recursively. */ + save_ccline = ccline; + ccline.cmdbuff = NULL; + ccline.cmdprompt = NULL; + + /* No Ex mode here! */ + exmode_active = 0; + + State = NORMAL; + setmouse(); + + /* Trigger CmdwinEnter autocommands. */ + typestr[0] = cmdwin_type; + typestr[1] = NUL; + apply_autocmds(EVENT_CMDWINENTER, typestr, typestr, FALSE, curbuf); + if (restart_edit != 0) /* autocmd with ":startinsert" */ + stuffcharReadbuff(K_NOP); + + i = RedrawingDisabled; + RedrawingDisabled = 0; + + /* + * Call the main loop until <CR> or CTRL-C is typed. + */ + cmdwin_result = 0; + main_loop(TRUE, FALSE); + + RedrawingDisabled = i; + + /* Trigger CmdwinLeave autocommands. */ + apply_autocmds(EVENT_CMDWINLEAVE, typestr, typestr, FALSE, curbuf); + + /* Restore the command line info. */ + ccline = save_ccline; + cmdwin_type = 0; + + exmode_active = save_exmode; + + /* Safety check: The old window or buffer was deleted: It's a bug when + * this happens! */ + if (!win_valid(old_curwin) || !buf_valid(old_curbuf)) { + cmdwin_result = Ctrl_C; + EMSG(_("E199: Active window or buffer deleted")); + } else { + /* autocmds may abort script processing */ + if (aborting() && cmdwin_result != K_IGNORE) + cmdwin_result = Ctrl_C; + /* Set the new command line from the cmdline buffer. */ + free(ccline.cmdbuff); + if (cmdwin_result == K_XF1 || cmdwin_result == K_XF2) { /* :qa[!] typed */ + char *p = (cmdwin_result == K_XF2) ? "qa" : "qa!"; + + if (histtype == HIST_CMD) { + /* Execute the command directly. */ + ccline.cmdbuff = vim_strsave((char_u *)p); + cmdwin_result = CAR; + } else { + /* First need to cancel what we were doing. */ + ccline.cmdbuff = NULL; + stuffcharReadbuff(':'); + stuffReadbuff((char_u *)p); + stuffcharReadbuff(CAR); + } + } else if (cmdwin_result == K_XF2) { /* :qa typed */ + ccline.cmdbuff = vim_strsave((char_u *)"qa"); + cmdwin_result = CAR; + } else if (cmdwin_result == Ctrl_C) { + /* :q or :close, don't execute any command + * and don't modify the cmd window. */ + ccline.cmdbuff = NULL; + } else + ccline.cmdbuff = vim_strsave(ml_get_curline()); + if (ccline.cmdbuff == NULL) + cmdwin_result = Ctrl_C; + else { + ccline.cmdlen = (int)STRLEN(ccline.cmdbuff); + ccline.cmdbufflen = ccline.cmdlen + 1; + ccline.cmdpos = curwin->w_cursor.col; + if (ccline.cmdpos > ccline.cmdlen) + ccline.cmdpos = ccline.cmdlen; + if (cmdwin_result == K_IGNORE) { + set_cmdspos_cursor(); + redrawcmd(); + } + } + + /* Don't execute autocommands while deleting the window. */ + block_autocmds(); + wp = curwin; + bp = curbuf; + win_goto(old_curwin); + win_close(wp, TRUE); + + /* win_close() may have already wiped the buffer when 'bh' is + * set to 'wipe' */ + if (buf_valid(bp)) + close_buffer(NULL, bp, DOBUF_WIPE, FALSE); + + /* Restore window sizes. */ + win_size_restore(&winsizes); + + unblock_autocmds(); + } + + ga_clear(&winsizes); + restart_edit = save_restart_edit; + cmdmsg_rl = save_cmdmsg_rl; + + State = save_State; + setmouse(); + + return cmdwin_result; +} + +/* + * Used for commands that either take a simple command string argument, or: + * cmd << endmarker + * {script} + * endmarker + * Returns a pointer to allocated memory with {script} or NULL. + */ +char_u *script_get(exarg_T *eap, char_u *cmd) +{ + char_u *theline; + char *end_pattern = NULL; + char dot[] = "."; + garray_T ga; + + if (cmd[0] != '<' || cmd[1] != '<' || eap->getline == NULL) + return NULL; + + ga_init(&ga, 1, 0x400); + + if (cmd[2] != NUL) + end_pattern = (char *)skipwhite(cmd + 2); + else + end_pattern = dot; + + for (;; ) { + theline = eap->getline( + eap->cstack->cs_looplevel > 0 ? -1 : + NUL, eap->cookie, 0); + + if (theline == NULL || STRCMP(end_pattern, theline) == 0) { + free(theline); + break; + } + + ga_concat(&ga, theline); + ga_append(&ga, '\n'); + free(theline); + } + ga_append(&ga, NUL); + + return (char_u *)ga.ga_data; +} |