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cmdexpand.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* 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.
*/
/*
* cmdexpand.c: functions for command-line completion
*/
#include "vim.h"
static int cmd_showtail; // Only show path tail in lists ?
static void set_context_for_wildcard_arg(exarg_T *eap, char_u *arg, int usefilter, expand_T *xp, int *complp);
static int ExpandFromContext(expand_T *xp, char_u *, char_u ***, int *, int);
static char_u *showmatches_gettail(char_u *s);
static int expand_showtail(expand_T *xp);
static int expand_shellcmd(char_u *filepat, char_u ***matches, int *numMatches, int flagsarg);
#if defined(FEAT_EVAL)
static int ExpandUserDefined(char_u *pat, expand_T *xp, regmatch_T *regmatch, char_u ***matches, int *numMatches);
static int ExpandUserList(expand_T *xp, char_u ***matches, int *numMatches);
#endif
// "compl_match_array" points the currently displayed list of entries in the
// popup menu. It is NULL when there is no popup menu.
static pumitem_T *compl_match_array = NULL;
static int compl_match_arraysize;
// First column in cmdline of the matched item for completion.
static int compl_startcol;
static int compl_selected;
#define SHOW_MATCH(m) (showtail ? showmatches_gettail(matches[m]) : matches[m])
/*
* Returns TRUE if fuzzy completion is supported for a given cmdline completion
* context.
*/
static int
cmdline_fuzzy_completion_supported(expand_T *xp)
{
return (vim_strchr(p_wop, WOP_FUZZY) != NULL
&& xp->xp_context != EXPAND_BOOL_SETTINGS
&& xp->xp_context != EXPAND_COLORS
&& xp->xp_context != EXPAND_COMPILER
&& xp->xp_context != EXPAND_DIRECTORIES
&& xp->xp_context != EXPAND_DIRS_IN_CDPATH
&& xp->xp_context != EXPAND_FILES
&& xp->xp_context != EXPAND_FILES_IN_PATH
&& xp->xp_context != EXPAND_FILETYPE
&& xp->xp_context != EXPAND_FINDFUNC
&& xp->xp_context != EXPAND_HELP
&& xp->xp_context != EXPAND_KEYMAP
&& xp->xp_context != EXPAND_OLD_SETTING
&& xp->xp_context != EXPAND_STRING_SETTING
&& xp->xp_context != EXPAND_SETTING_SUBTRACT
&& xp->xp_context != EXPAND_OWNSYNTAX
&& xp->xp_context != EXPAND_PACKADD
&& xp->xp_context != EXPAND_RUNTIME
&& xp->xp_context != EXPAND_SHELLCMD
&& xp->xp_context != EXPAND_SHELLCMDLINE
&& xp->xp_context != EXPAND_TAGS
&& xp->xp_context != EXPAND_TAGS_LISTFILES
&& xp->xp_context != EXPAND_USER_LIST);
}
/*
* Returns TRUE if fuzzy completion for cmdline completion is enabled and
* 'fuzzystr' is not empty. If search pattern is empty, then don't use fuzzy
* matching.
*/
int
cmdline_fuzzy_complete(char_u *fuzzystr)
{
return vim_strchr(p_wop, WOP_FUZZY) != NULL && *fuzzystr != NUL;
}
/*
* sort function for the completion matches.
* <SNR> functions should be sorted to the end.
*/
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);
}
/*
* Escape special characters in the cmdline completion matches.
*/
static void
wildescape(
expand_T *xp,
char_u *str,
int numfiles,
char_u **files)
{
char_u *p;
int vse_what = xp->xp_context == EXPAND_BUFFERS
? VSE_BUFFER : VSE_NONE;
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
|| xp->xp_context == EXPAND_DIRS_IN_CDPATH)
{
// Insert a backslash into a file name before a space, \, %, #
// and wildmatch characters, except '~'.
for (int i = 0; i < numfiles; ++i)
{
// for ":set path=" we need to escape spaces twice
if (xp->xp_backslash & XP_BS_THREE)
{
char *pat = (xp->xp_backslash & XP_BS_COMMA) ? " ," : " ";
p = vim_strsave_escaped(files[i], (char_u *)pat);
if (p != NULL)
{
vim_free(files[i]);
files[i] = p;
#if defined(BACKSLASH_IN_FILENAME)
p = vim_strsave_escaped(files[i], (char_u *)" ");
if (p != NULL)
{
vim_free(files[i]);
files[i] = p;
}
#endif
}
}
else if (xp->xp_backslash & XP_BS_COMMA)
{
if (vim_strchr(files[i], ',') != NULL)
{
p = vim_strsave_escaped(files[i], (char_u *)",");
if (p != NULL)
{
vim_free(files[i]);
files[i] = p;
}
}
}
#ifdef BACKSLASH_IN_FILENAME
p = vim_strsave_fnameescape(files[i], vse_what);
#else
p = vim_strsave_fnameescape(files[i],
xp->xp_shell ? VSE_SHELL : vse_what);
#endif
if (p != NULL)
{
vim_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 (int i = 0; i < numfiles; ++i)
{
p = vim_strsave_escaped(files[i], (char_u *)"\\|\"");
if (p != NULL)
{
vim_free(files[i]);
files[i] = p;
}
}
}
}
/*
* Escape special characters in the cmdline completion matches.
*/
static void
ExpandEscape(
expand_T *xp,
char_u *str,
int numfiles,
char_u **files,
int options)
{
// May change home directory back to "~"
if (options & WILD_HOME_REPLACE)
tilde_replace(str, numfiles, files);
if (options & WILD_ESCAPE)
wildescape(xp, str, numfiles, files);
}
/*
* 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.
*/
int
nextwild(
expand_T *xp,
int type,
int options, // extra options for ExpandOne()
int escape) // if TRUE, escape the returned matches
{
cmdline_info_T *ccline = get_cmdline_info();
int i, j;
char_u *p1;
char_u *p2;
int difflen;
int v;
if (xp->xp_numfiles == -1)
{
#ifdef FEAT_EVAL
if (ccline->input_fn && ccline->xp_context == EXPAND_COMMANDS)
{
// Expand commands typed in input() function
set_cmd_context(xp, ccline->cmdbuff, ccline->cmdlen, ccline->cmdpos, FALSE);
}
else
#endif
{
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;
}
// If cmd_silent is set then don't show the dots, because redrawcmd() below
// won't remove them.
if (!cmd_silent)
{
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
|| type == WILD_PAGEUP || type == WILD_PAGEDOWN)
{
// Get next/previous match for a previous expanded pattern.
p2 = ExpandOne(xp, NULL, NULL, 0, type);
}
else
{
if (cmdline_fuzzy_completion_supported(xp))
// If fuzzy matching, don't modify the search string
p1 = vim_strnsave(xp->xp_pattern, xp->xp_pattern_len);
else
p1 = addstar(xp->xp_pattern, xp->xp_pattern_len, xp->xp_context);
// Translate string into pattern and expand it.
if (p1 == NULL)
p2 = NULL;
else
{
int use_options = options |
WILD_HOME_REPLACE|WILD_ADD_SLASH|WILD_SILENT;
if (use_options & WILD_KEEP_SOLE_ITEM)
use_options &= ~WILD_KEEP_SOLE_ITEM;
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);
vim_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)
VIM_CLEAR(p2);
}
}
}
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)
{
mch_memmove(&ccline->cmdbuff[ccline->cmdpos + difflen],
&ccline->cmdbuff[ccline->cmdpos],
(size_t)(ccline->cmdlen - ccline->cmdpos + 1));
mch_memmove(&ccline->cmdbuff[i], p2, STRLEN(p2));
ccline->cmdlen += difflen;
ccline->cmdpos += difflen;
}
}
vim_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 && !(options & WILD_KEEP_SOLE_ITEM))
// free expanded pattern
(void)ExpandOne(xp, NULL, NULL, 0, WILD_FREE);
return OK;
}
/*
* Create and display a cmdline completion popup menu with items from
* 'matches'.
*/
static int
cmdline_pum_create(
cmdline_info_T *ccline,
expand_T *xp,
char_u **matches,
int numMatches,
int showtail)
{
int i;
int columns;
// Add all the completion matches
compl_match_arraysize = numMatches;
compl_match_array = ALLOC_MULT(pumitem_T, compl_match_arraysize);
for (i = 0; i < numMatches; i++)
{
compl_match_array[i].pum_text = SHOW_MATCH(i);
compl_match_array[i].pum_info = NULL;
compl_match_array[i].pum_extra = NULL;
compl_match_array[i].pum_kind = NULL;
compl_match_array[i].pum_user_abbr_hlattr = -1;
compl_match_array[i].pum_user_kind_hlattr = -1;
}
// Compute the popup menu starting column
compl_startcol = vim_strsize(ccline->cmdbuff) + 1;
columns = vim_strsize(xp->xp_pattern);
if (showtail)
{
columns += vim_strsize(showmatches_gettail(matches[0]));
columns -= vim_strsize(matches[0]);
}
compl_startcol = MAX(0, compl_startcol - columns);
// no default selection
compl_selected = -1;
cmdline_pum_display();
return EXPAND_OK;
}
/*
* Display the cmdline completion matches in a popup menu
*/
void
cmdline_pum_display(void)
{
pum_display(compl_match_array, compl_match_arraysize, compl_selected);
}
/*
* Returns TRUE if the cmdline completion popup menu is being displayed.
*/
int
cmdline_pum_active(void)
{
return pum_visible() && compl_match_array != NULL;
}
/*
* Remove the cmdline completion popup menu (if present), free the list of
* items and refresh the screen.
*/
void
cmdline_pum_remove(cmdline_info_T *cclp UNUSED)
{
int save_p_lz = p_lz;
int save_KeyTyped = KeyTyped;
#ifdef FEAT_EVAL
int save_RedrawingDisabled = RedrawingDisabled;
if (cclp->input_fn)
RedrawingDisabled = 0;
#endif
pum_undisplay();
VIM_CLEAR(compl_match_array);
p_lz = FALSE; // avoid the popup menu hanging around
update_screen(0);
p_lz = save_p_lz;
redrawcmd();
// When a function is called (e.g. for 'foldtext') KeyTyped might be reset
// as a side effect.
KeyTyped = save_KeyTyped;
#ifdef FEAT_EVAL
if (cclp->input_fn)
RedrawingDisabled = save_RedrawingDisabled;
#endif
}
void
cmdline_pum_cleanup(cmdline_info_T *cclp)
{
cmdline_pum_remove(cclp);
wildmenu_cleanup(cclp);
}
/*
* Returns the starting column number to use for the cmdline completion popup
* menu.
*/
int
cmdline_compl_startcol(void)
{
return compl_startcol;
}
/*
* Returns the current cmdline completion pattern.
*/
char_u *
cmdline_compl_pattern(void)
{
expand_T *xp = get_cmdline_info()->xpc;
return xp == NULL ? NULL : xp->xp_orig;
}
/*
* Returns TRUE if fuzzy cmdline completion is active, FALSE otherwise.
*/
int
cmdline_compl_is_fuzzy(void)
{
expand_T *xp = get_cmdline_info()->xpc;
return xp != NULL && cmdline_fuzzy_completion_supported(xp);
}
/*
* Return the number of characters that should be skipped in a status match.
* These are backslashes used for escaping. Do show backslashes in help tags.
*/
static int
skip_status_match_char(expand_T *xp, char_u *s)
{
if ((rem_backslash(s) && xp->xp_context != EXPAND_HELP)
#ifdef FEAT_MENU
|| ((xp->xp_context == EXPAND_MENUS
|| xp->xp_context == EXPAND_MENUNAMES)
&& (s[0] == '\t' || (s[0] == '\\' && s[1] != NUL)))
#endif
)
{
#ifndef BACKSLASH_IN_FILENAME
if (xp->xp_shell && csh_like_shell() && s[1] == '\\' && s[2] == '!')
return 2;
#endif
return 1;
}
return 0;
}
/*
* Get the length of an item as it will be shown in the status line.
*/
static int
status_match_len(expand_T *xp, char_u *s)
{
int len = 0;
#ifdef FEAT_MENU
int emenu = xp->xp_context == EXPAND_MENUS
|| xp->xp_context == EXPAND_MENUNAMES;
// Check for menu separators - replace with '|'.
if (emenu && menu_is_separator(s))
return 1;
#endif
while (*s != NUL)
{
s += skip_status_match_char(xp, s);
len += ptr2cells(s);
MB_PTR_ADV(s);
}
return len;
}
/*
* Show wildchar matches in the status line.
* Show at least the "match" item.
* We start at item 'first_match' in the list and show all matches that fit.
*
* If inversion is possible we use it. Else '=' characters are used.
*/
static void
win_redr_status_matches(
expand_T *xp,
int num_matches,
char_u **matches, // list of matches
int match,
int showtail)
{
int row;
char_u *buf;
int len;
int clen; // length in screen cells
int fillchar;
int attr;
int i;
int highlight = TRUE;
char_u *selstart = NULL;
int selstart_col = 0;
char_u *selend = NULL;
static int first_match = 0;
int add_left = FALSE;
char_u *s;
#ifdef FEAT_MENU
int emenu;
#endif
int l;
if (matches == NULL) // interrupted completion?
return;
if (has_mbyte)
buf = alloc(Columns * MB_MAXBYTES + 1);
else
buf = alloc(Columns + 1);
if (buf == NULL)
return;
if (match == -1) // don't show match but original text
{
match = 0;
highlight = FALSE;
}
// count 1 for the ending ">"
clen = status_match_len(xp, SHOW_MATCH(match)) + 3;
if (match == 0)
first_match = 0;
else if (match < first_match)
{
// jumping left, as far as we can go
first_match = match;
add_left = TRUE;
}
else
{
// check if match fits on the screen
for (i = first_match; i < match; ++i)
clen += status_match_len(xp, SHOW_MATCH(i)) + 2;
if (first_match > 0)
clen += 2;
// jumping right, put match at the left
if ((long)clen > Columns)
{
first_match = match;
// if showing the last match, we can add some on the left
clen = 2;
for (i = match; i < num_matches; ++i)
{
clen += status_match_len(xp, SHOW_MATCH(i)) + 2;
if ((long)clen >= Columns)
break;
}
if (i == num_matches)
add_left = TRUE;
}
}
if (add_left)
while (first_match > 0)
{
clen += status_match_len(xp, SHOW_MATCH(first_match - 1)) + 2;
if ((long)clen >= Columns)
break;
--first_match;
}
fillchar = fillchar_status(&attr, curwin);
if (first_match == 0)
{
*buf = NUL;
len = 0;
}
else
{
STRCPY(buf, "< ");
len = 2;
}
clen = len;
i = first_match;
while ((long)(clen + status_match_len(xp, SHOW_MATCH(i)) + 2) < Columns)
{
if (i == match)
{
selstart = buf + len;
selstart_col = clen;
}
s = SHOW_MATCH(i);
// Check for menu separators - replace with '|'
#ifdef FEAT_MENU
emenu = (xp->xp_context == EXPAND_MENUS
|| xp->xp_context == EXPAND_MENUNAMES);
if (emenu && menu_is_separator(s))
{
STRCPY(buf + len, transchar('|'));
l = (int)STRLEN(buf + len);
len += l;
clen += l;
}
else
#endif
for ( ; *s != NUL; ++s)
{
s += skip_status_match_char(xp, s);
clen += ptr2cells(s);
if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1)
{
STRNCPY(buf + len, s, l);
s += l - 1;
len += l;
}
else
{
STRCPY(buf + len, transchar_byte(*s));
len += (int)STRLEN(buf + len);
}
}
if (i == match)
selend = buf + len;
*(buf + len++) = ' ';
*(buf + len++) = ' ';
clen += 2;
if (++i == num_matches)
break;
}
if (i != num_matches)
{
*(buf + len++) = '>';
++clen;
}
buf[len] = NUL;
row = cmdline_row - 1;
if (row >= 0)
{
if (wild_menu_showing == 0)
{
if (msg_scrolled > 0)
{
// Put the wildmenu just above the command line. If there is
// no room, scroll the screen one line up.
if (cmdline_row == Rows - 1)
{
screen_del_lines(0, 0, 1, (int)Rows, TRUE, 0, NULL);
++msg_scrolled;
}
else
{
++cmdline_row;
++row;
}
wild_menu_showing = WM_SCROLLED;
}
else
{
// Create status line if needed by setting 'laststatus' to 2.
// Set 'winminheight' to zero to avoid that the window is
// resized.
if (lastwin->w_status_height == 0)
{
save_p_ls = p_ls;
save_p_wmh = p_wmh;
p_ls = 2;
p_wmh = 0;
last_status(FALSE);
}
wild_menu_showing = WM_SHOWN;
}
}
screen_puts(buf, row, 0, attr);
if (selstart != NULL && highlight)
{
*selend = NUL;
screen_puts(selstart, row, selstart_col, HL_ATTR(HLF_WM));
}
screen_fill(row, row + 1, clen, (int)Columns, fillchar, fillchar, attr);
}
win_redraw_last_status(topframe);
vim_free(buf);
}
/*
* Get the next or prev cmdline completion match. The index of the match is set
* in "xp->xp_selected"
*/
static char_u *
get_next_or_prev_match(int mode, expand_T *xp)
{
int findex = xp->xp_selected;
int ht;
// When no matches found, return NULL
if (xp->xp_numfiles <= 0)
return NULL;
if (mode == WILD_PREV)
{
// Select the last entry if at original text
if (findex == -1)
findex = xp->xp_numfiles;
// Otherwise select the previous entry
--findex;
}
else if (mode == WILD_NEXT)
{
// Select the next entry
++findex;
}
else // WILD_PAGEDOWN or WILD_PAGEUP
{
// Get the height of popup menu (used for both PAGEUP and PAGEDOWN)
ht = pum_get_height();
if (ht > 3)
ht -= 2;
if (mode == WILD_PAGEUP)
{
if (findex == 0)
// at the first entry, don't select any entries
findex = -1;
else if (findex < 0)
// no entry is selected. select the last entry
findex = xp->xp_numfiles - 1;
else
// go up by the pum height
findex = MAX(findex - ht, 0);
}
else // mode == WILD_PAGEDOWN
{
if (findex >= xp->xp_numfiles - 1)
// at the last entry, don't select any entries
findex = -1;
else if (findex < 0)
// no entry is selected, select the first entry
findex = 0;
else
// go down by the pum height
findex = MIN(findex + ht, xp->xp_numfiles - 1);
}
}
// Handle wrapping around
if (findex < 0 || findex >= xp->xp_numfiles)
{
// If original text exists, return to it when wrapping around
if (xp->xp_orig != NULL)
findex = -1;
else
// Wrap around to opposite end
findex = (findex < 0) ? xp->xp_numfiles - 1 : 0;
}
// Display matches on screen
if (compl_match_array)
{
compl_selected = findex;
cmdline_pum_display();
}
else if (p_wmnu)
win_redr_status_matches(xp, xp->xp_numfiles, xp->xp_files, findex,
cmd_showtail);
xp->xp_selected = findex;
// Return the original text or the selected match
return vim_strsave(findex == -1 ? xp->xp_orig : xp->xp_files[findex]);
}
/*
* Start the command-line expansion and get the matches.
*/
static char_u *
ExpandOne_start(int mode, expand_T *xp, char_u *str, int options)
{
int non_suf_match; // number without matching suffix
int i;
char_u *ss = NULL;
// Do the expansion.
if (ExpandFromContext(xp, str, &xp->xp_files, &xp->xp_numfiles,
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))
semsg(_(e_no_match_str_2), str);
#endif
}
else if (xp->xp_numfiles == 0)
{
if (!(options & WILD_SILENT))
semsg(_(e_no_match_str_2), 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_too_many_file_names));
else if (!(options & WILD_NO_BEEP))
beep_flush();
}
if (!(non_suf_match != 1 && mode == WILD_EXPAND_FREE))
ss = vim_strsave(xp->xp_files[0]);
}
}
return ss;
}
/*
* Return the longest common part in the list of cmdline completion matches.
*/
static char_u *
find_longest_match(expand_T *xp, int options)
{
long_u len;
int mb_len = 1;
int c0, ci;
int i;
char_u *ss;
for (len = 0; xp->xp_files[0][len]; len += mb_len)
{
if (has_mbyte)
{
mb_len = (*mb_ptr2len)(&xp->xp_files[0][len]);
c0 =(* mb_ptr2char)(&xp->xp_files[0][len]);
}
else
c0 = xp->xp_files[0][len];
for (i = 1; i < xp->xp_numfiles; ++i)
{
if (has_mbyte)
ci =(* mb_ptr2char)(&xp->xp_files[i][len]);
else
ci = xp->xp_files[i][len];
if (p_fic && (xp->xp_context == EXPAND_DIRECTORIES
|| xp->xp_context == EXPAND_FILES
|| xp->xp_context == EXPAND_SHELLCMD
|| xp->xp_context == EXPAND_BUFFERS))
{
if (MB_TOLOWER(c0) != MB_TOLOWER(ci))
break;
}
else if (c0 != ci)
break;
}
if (i < xp->xp_numfiles)
{
if (!(options & WILD_NO_BEEP))
vim_beep(BO_WILD);
break;
}
}
ss = alloc(len + 1);
if (ss)
vim_strncpy(ss, xp->xp_files[0], (size_t)len);
return ss;
}
/*
* 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 "xp->xp_orig" 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
* mode = WILD_APPLY: apply the item selected in the cmdline completion
* popup menu and close the menu.
* mode = WILD_CANCEL: cancel and close the cmdline completion popup and
* use the original text.
*
* 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
* options = WILD_ALLLINKS; keep broken links
*
* The variables xp->xp_context and xp->xp_backslash must have been set!
*/