/
buffer.c
5803 lines (5349 loc) · 137 KB
/
buffer.c
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/* vi:set ts=8 sts=4 sw=4:
*
* 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.
*/
/*
* buffer.c: functions for dealing with the buffer structure
*/
/*
* The buffer list is a double linked list of all buffers.
* Each buffer can be in one of these states:
* never loaded: BF_NEVERLOADED is set, only the file name is valid
* not loaded: b_ml.ml_mfp == NULL, no memfile allocated
* hidden: b_nwindows == 0, loaded but not displayed in a window
* normal: loaded and displayed in a window
*
* Instead of storing file names all over the place, each file name is
* stored in the buffer list. It can be referenced by a number.
*
* The current implementation remembers all file names ever used.
*/
#include "vim.h"
#if defined(FEAT_CMDL_COMPL) || defined(FEAT_LISTCMDS) || defined(FEAT_EVAL) || defined(FEAT_PERL)
static char_u *buflist_match __ARGS((regprog_T *prog, buf_T *buf));
# define HAVE_BUFLIST_MATCH
static char_u *fname_match __ARGS((regprog_T *prog, char_u *name));
#endif
static void buflist_setfpos __ARGS((buf_T *buf, win_T *win, linenr_T lnum, colnr_T col, int copy_options));
static wininfo_T *find_wininfo __ARGS((buf_T *buf, int skip_diff_buffer));
#ifdef UNIX
static buf_T *buflist_findname_stat __ARGS((char_u *ffname, struct stat *st));
static int otherfile_buf __ARGS((buf_T *buf, char_u *ffname, struct stat *stp));
static int buf_same_ino __ARGS((buf_T *buf, struct stat *stp));
#else
static int otherfile_buf __ARGS((buf_T *buf, char_u *ffname));
#endif
#ifdef FEAT_TITLE
static int ti_change __ARGS((char_u *str, char_u **last));
#endif
static int append_arg_number __ARGS((win_T *wp, char_u *buf, int buflen, int add_file));
static void free_buffer __ARGS((buf_T *));
static void free_buffer_stuff __ARGS((buf_T *buf, int free_options));
static void clear_wininfo __ARGS((buf_T *buf));
#ifdef UNIX
# define dev_T dev_t
#else
# define dev_T unsigned
#endif
#if defined(FEAT_SIGNS)
static void insert_sign __ARGS((buf_T *buf, signlist_T *prev, signlist_T *next, int id, linenr_T lnum, int typenr));
#endif
#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
static char *msg_loclist = N_("[Location List]");
static char *msg_qflist = N_("[Quickfix List]");
#endif
#ifdef FEAT_AUTOCMD
static char *e_auabort = N_("E855: Autocommands caused command to abort");
#endif
/*
* Open current buffer, that is: open the memfile and read the file into
* memory.
* Return FAIL for failure, OK otherwise.
*/
int
open_buffer(read_stdin, eap, flags)
int read_stdin; /* read file from stdin */
exarg_T *eap; /* for forced 'ff' and 'fenc' or NULL */
int flags; /* extra flags for readfile() */
{
int retval = OK;
#ifdef FEAT_AUTOCMD
buf_T *old_curbuf;
#endif
#ifdef FEAT_SYN_HL
long old_tw = curbuf->b_p_tw;
#endif
/*
* The 'readonly' flag is only set when BF_NEVERLOADED is being reset.
* When re-entering the same buffer, it should not change, because the
* user may have reset the flag by hand.
*/
if (readonlymode && curbuf->b_ffname != NULL
&& (curbuf->b_flags & BF_NEVERLOADED))
curbuf->b_p_ro = TRUE;
if (ml_open(curbuf) == FAIL)
{
/*
* There MUST be a memfile, otherwise we can't do anything
* If we can't create one for the current buffer, take another buffer
*/
close_buffer(NULL, curbuf, 0, FALSE);
for (curbuf = firstbuf; curbuf != NULL; curbuf = curbuf->b_next)
if (curbuf->b_ml.ml_mfp != NULL)
break;
/*
* if there is no memfile at all, exit
* This is OK, since there are no changes to lose.
*/
if (curbuf == NULL)
{
EMSG(_("E82: Cannot allocate any buffer, exiting..."));
getout(2);
}
EMSG(_("E83: Cannot allocate buffer, using other one..."));
enter_buffer(curbuf);
#ifdef FEAT_SYN_HL
if (old_tw != curbuf->b_p_tw)
check_colorcolumn(curwin);
#endif
return FAIL;
}
#ifdef FEAT_AUTOCMD
/* The autocommands in readfile() may change the buffer, but only AFTER
* reading the file. */
old_curbuf = curbuf;
modified_was_set = FALSE;
#endif
/* mark cursor position as being invalid */
curwin->w_valid = 0;
if (curbuf->b_ffname != NULL
#ifdef FEAT_NETBEANS_INTG
&& netbeansReadFile
#endif
)
{
#ifdef FEAT_NETBEANS_INTG
int oldFire = netbeansFireChanges;
netbeansFireChanges = 0;
#endif
retval = readfile(curbuf->b_ffname, curbuf->b_fname,
(linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM, eap,
flags | READ_NEW);
#ifdef FEAT_NETBEANS_INTG
netbeansFireChanges = oldFire;
#endif
/* Help buffer is filtered. */
if (curbuf->b_help)
fix_help_buffer();
}
else if (read_stdin)
{
int save_bin = curbuf->b_p_bin;
linenr_T line_count;
/*
* First read the text in binary mode into the buffer.
* Then read from that same buffer and append at the end. This makes
* it possible to retry when 'fileformat' or 'fileencoding' was
* guessed wrong.
*/
curbuf->b_p_bin = TRUE;
retval = readfile(NULL, NULL, (linenr_T)0,
(linenr_T)0, (linenr_T)MAXLNUM, NULL,
flags | (READ_NEW + READ_STDIN));
curbuf->b_p_bin = save_bin;
if (retval == OK)
{
line_count = curbuf->b_ml.ml_line_count;
retval = readfile(NULL, NULL, (linenr_T)line_count,
(linenr_T)0, (linenr_T)MAXLNUM, eap,
flags | READ_BUFFER);
if (retval == OK)
{
/* Delete the binary lines. */
while (--line_count >= 0)
ml_delete((linenr_T)1, FALSE);
}
else
{
/* Delete the converted lines. */
while (curbuf->b_ml.ml_line_count > line_count)
ml_delete(line_count, FALSE);
}
/* Put the cursor on the first line. */
curwin->w_cursor.lnum = 1;
curwin->w_cursor.col = 0;
/* Set or reset 'modified' before executing autocommands, so that
* it can be changed there. */
if (!readonlymode && !bufempty())
changed();
else if (retval != FAIL)
unchanged(curbuf, FALSE);
#ifdef FEAT_AUTOCMD
# ifdef FEAT_EVAL
apply_autocmds_retval(EVENT_STDINREADPOST, NULL, NULL, FALSE,
curbuf, &retval);
# else
apply_autocmds(EVENT_STDINREADPOST, NULL, NULL, FALSE, curbuf);
# endif
#endif
}
}
/* if first time loading this buffer, init b_chartab[] */
if (curbuf->b_flags & BF_NEVERLOADED)
(void)buf_init_chartab(curbuf, FALSE);
/*
* Set/reset the Changed flag first, autocmds may change the buffer.
* Apply the automatic commands, before processing the modelines.
* So the modelines have priority over auto commands.
*/
/* When reading stdin, the buffer contents always needs writing, so set
* the changed flag. Unless in readonly mode: "ls | gview -".
* When interrupted and 'cpoptions' contains 'i' set changed flag. */
if ((got_int && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
#ifdef FEAT_AUTOCMD
|| modified_was_set /* ":set modified" used in autocmd */
# ifdef FEAT_EVAL
|| (aborting() && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
# endif
#endif
)
changed();
else if (retval != FAIL && !read_stdin)
unchanged(curbuf, FALSE);
save_file_ff(curbuf); /* keep this fileformat */
/* require "!" to overwrite the file, because it wasn't read completely */
#ifdef FEAT_EVAL
if (aborting())
#else
if (got_int)
#endif
curbuf->b_flags |= BF_READERR;
#ifdef FEAT_FOLDING
/* Need to update automatic folding. Do this before the autocommands,
* they may use the fold info. */
foldUpdateAll(curwin);
#endif
#ifdef FEAT_AUTOCMD
/* need to set w_topline, unless some autocommand already did that. */
if (!(curwin->w_valid & VALID_TOPLINE))
{
curwin->w_topline = 1;
# ifdef FEAT_DIFF
curwin->w_topfill = 0;
# endif
}
# ifdef FEAT_EVAL
apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf, &retval);
# else
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
# endif
#endif
if (retval != FAIL)
{
#ifdef FEAT_AUTOCMD
/*
* The autocommands may have changed the current buffer. Apply the
* modelines to the correct buffer, if it still exists and is loaded.
*/
if (buf_valid(old_curbuf) && old_curbuf->b_ml.ml_mfp != NULL)
{
aco_save_T aco;
/* Go to the buffer that was opened. */
aucmd_prepbuf(&aco, old_curbuf);
#endif
do_modelines(0);
curbuf->b_flags &= ~(BF_CHECK_RO | BF_NEVERLOADED);
#ifdef FEAT_AUTOCMD
# ifdef FEAT_EVAL
apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf,
&retval);
# else
apply_autocmds(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf);
# endif
/* restore curwin/curbuf and a few other things */
aucmd_restbuf(&aco);
}
#endif
}
return retval;
}
/*
* Return TRUE if "buf" points to a valid buffer (in the buffer list).
*/
int
buf_valid(buf)
buf_T *buf;
{
buf_T *bp;
for (bp = firstbuf; bp != NULL; bp = bp->b_next)
if (bp == buf)
return TRUE;
return FALSE;
}
/*
* Close the link to a buffer.
* "action" is used when there is no longer a window for the buffer.
* It can be:
* 0 buffer becomes hidden
* DOBUF_UNLOAD buffer is unloaded
* DOBUF_DELETE buffer is unloaded and removed from buffer list
* DOBUF_WIPE buffer is unloaded and really deleted
* When doing all but the first one on the current buffer, the caller should
* get a new buffer very soon!
*
* The 'bufhidden' option can force freeing and deleting.
*
* When "abort_if_last" is TRUE then do not close the buffer if autocommands
* cause there to be only one window with this buffer. e.g. when ":quit" is
* supposed to close the window but autocommands close all other windows.
*/
void
close_buffer(win, buf, action, abort_if_last)
win_T *win; /* if not NULL, set b_last_cursor */
buf_T *buf;
int action;
int abort_if_last UNUSED;
{
#ifdef FEAT_AUTOCMD
int is_curbuf;
int nwindows;
#endif
int unload_buf = (action != 0);
int del_buf = (action == DOBUF_DEL || action == DOBUF_WIPE);
int wipe_buf = (action == DOBUF_WIPE);
#ifdef FEAT_QUICKFIX
/*
* Force unloading or deleting when 'bufhidden' says so.
* The caller must take care of NOT deleting/freeing when 'bufhidden' is
* "hide" (otherwise we could never free or delete a buffer).
*/
if (buf->b_p_bh[0] == 'd') /* 'bufhidden' == "delete" */
{
del_buf = TRUE;
unload_buf = TRUE;
}
else if (buf->b_p_bh[0] == 'w') /* 'bufhidden' == "wipe" */
{
del_buf = TRUE;
unload_buf = TRUE;
wipe_buf = TRUE;
}
else if (buf->b_p_bh[0] == 'u') /* 'bufhidden' == "unload" */
unload_buf = TRUE;
#endif
if (win != NULL)
{
/* Set b_last_cursor when closing the last window for the buffer.
* Remember the last cursor position and window options of the buffer.
* This used to be only for the current window, but then options like
* 'foldmethod' may be lost with a ":only" command. */
if (buf->b_nwindows == 1)
set_last_cursor(win);
buflist_setfpos(buf, win,
win->w_cursor.lnum == 1 ? 0 : win->w_cursor.lnum,
win->w_cursor.col, TRUE);
}
#ifdef FEAT_AUTOCMD
/* When the buffer is no longer in a window, trigger BufWinLeave */
if (buf->b_nwindows == 1)
{
buf->b_closing = TRUE;
apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname,
FALSE, buf);
if (!buf_valid(buf))
{
/* Autocommands deleted the buffer. */
aucmd_abort:
EMSG(_(e_auabort));
return;
}
buf->b_closing = FALSE;
if (abort_if_last && one_window())
/* Autocommands made this the only window. */
goto aucmd_abort;
/* When the buffer becomes hidden, but is not unloaded, trigger
* BufHidden */
if (!unload_buf)
{
buf->b_closing = TRUE;
apply_autocmds(EVENT_BUFHIDDEN, buf->b_fname, buf->b_fname,
FALSE, buf);
if (!buf_valid(buf))
/* Autocommands deleted the buffer. */
goto aucmd_abort;
buf->b_closing = FALSE;
if (abort_if_last && one_window())
/* Autocommands made this the only window. */
goto aucmd_abort;
}
# ifdef FEAT_EVAL
if (aborting()) /* autocmds may abort script processing */
return;
# endif
}
nwindows = buf->b_nwindows;
#endif
/* decrease the link count from windows (unless not in any window) */
if (buf->b_nwindows > 0)
--buf->b_nwindows;
/* Return when a window is displaying the buffer or when it's not
* unloaded. */
if (buf->b_nwindows > 0 || !unload_buf)
return;
/* Always remove the buffer when there is no file name. */
if (buf->b_ffname == NULL)
del_buf = TRUE;
/*
* Free all things allocated for this buffer.
* Also calls the "BufDelete" autocommands when del_buf is TRUE.
*/
#ifdef FEAT_AUTOCMD
/* Remember if we are closing the current buffer. Restore the number of
* windows, so that autocommands in buf_freeall() don't get confused. */
is_curbuf = (buf == curbuf);
buf->b_nwindows = nwindows;
#endif
buf_freeall(buf, (del_buf ? BFA_DEL : 0) + (wipe_buf ? BFA_WIPE : 0));
if (
#ifdef FEAT_WINDOWS
win_valid(win) &&
#else
win != NULL &&
#endif
win->w_buffer == buf)
win->w_buffer = NULL; /* make sure we don't use the buffer now */
#ifdef FEAT_AUTOCMD
/* Autocommands may have deleted the buffer. */
if (!buf_valid(buf))
return;
# ifdef FEAT_EVAL
if (aborting()) /* autocmds may abort script processing */
return;
# endif
/* Autocommands may have opened or closed windows for this buffer.
* Decrement the count for the close we do here. */
if (buf->b_nwindows > 0)
--buf->b_nwindows;
/*
* It's possible that autocommands change curbuf to the one being deleted.
* This might cause the previous curbuf to be deleted unexpectedly. But
* in some cases it's OK to delete the curbuf, because a new one is
* obtained anyway. Therefore only return if curbuf changed to the
* deleted buffer.
*/
if (buf == curbuf && !is_curbuf)
return;
#endif
/* Change directories when the 'acd' option is set. */
DO_AUTOCHDIR
/*
* Remove the buffer from the list.
*/
if (wipe_buf)
{
#ifdef FEAT_SUN_WORKSHOP
if (usingSunWorkShop)
workshop_file_closed_lineno((char *)buf->b_ffname,
(int)buf->b_last_cursor.lnum);
#endif
vim_free(buf->b_ffname);
vim_free(buf->b_sfname);
if (buf->b_prev == NULL)
firstbuf = buf->b_next;
else
buf->b_prev->b_next = buf->b_next;
if (buf->b_next == NULL)
lastbuf = buf->b_prev;
else
buf->b_next->b_prev = buf->b_prev;
free_buffer(buf);
}
else
{
if (del_buf)
{
/* Free all internal variables and reset option values, to make
* ":bdel" compatible with Vim 5.7. */
free_buffer_stuff(buf, TRUE);
/* Make it look like a new buffer. */
buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
/* Init the options when loaded again. */
buf->b_p_initialized = FALSE;
}
buf_clear_file(buf);
if (del_buf)
buf->b_p_bl = FALSE;
}
}
/*
* Make buffer not contain a file.
*/
void
buf_clear_file(buf)
buf_T *buf;
{
buf->b_ml.ml_line_count = 1;
unchanged(buf, TRUE);
#ifndef SHORT_FNAME
buf->b_shortname = FALSE;
#endif
buf->b_p_eol = TRUE;
buf->b_start_eol = TRUE;
#ifdef FEAT_MBYTE
buf->b_p_bomb = FALSE;
buf->b_start_bomb = FALSE;
#endif
buf->b_ml.ml_mfp = NULL;
buf->b_ml.ml_flags = ML_EMPTY; /* empty buffer */
#ifdef FEAT_NETBEANS_INTG
netbeans_deleted_all_lines(buf);
#endif
}
/*
* buf_freeall() - free all things allocated for a buffer that are related to
* the file. flags:
* BFA_DEL buffer is going to be deleted
* BFA_WIPE buffer is going to be wiped out
* BFA_KEEP_UNDO do not free undo information
*/
void
buf_freeall(buf, flags)
buf_T *buf;
int flags;
{
#ifdef FEAT_AUTOCMD
int is_curbuf = (buf == curbuf);
buf->b_closing = TRUE;
apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, FALSE, buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
if ((flags & BFA_DEL) && buf->b_p_bl)
{
apply_autocmds(EVENT_BUFDELETE, buf->b_fname, buf->b_fname, FALSE, buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
}
if (flags & BFA_WIPE)
{
apply_autocmds(EVENT_BUFWIPEOUT, buf->b_fname, buf->b_fname,
FALSE, buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
}
buf->b_closing = FALSE;
# ifdef FEAT_EVAL
if (aborting()) /* autocmds may abort script processing */
return;
# endif
/*
* It's possible that autocommands change curbuf to the one being deleted.
* This might cause curbuf to be deleted unexpectedly. But in some cases
* it's OK to delete the curbuf, because a new one is obtained anyway.
* Therefore only return if curbuf changed to the deleted buffer.
*/
if (buf == curbuf && !is_curbuf)
return;
#endif
#ifdef FEAT_DIFF
diff_buf_delete(buf); /* Can't use 'diff' for unloaded buffer. */
#endif
#ifdef FEAT_SYN_HL
/* Remove any ownsyntax, unless exiting. */
if (firstwin != NULL && curwin->w_buffer == buf)
reset_synblock(curwin);
#endif
#ifdef FEAT_FOLDING
/* No folds in an empty buffer. */
# ifdef FEAT_WINDOWS
{
win_T *win;
tabpage_T *tp;
FOR_ALL_TAB_WINDOWS(tp, win)
if (win->w_buffer == buf)
clearFolding(win);
}
# else
if (curwin->w_buffer == buf)
clearFolding(curwin);
# endif
#endif
#ifdef FEAT_TCL
tcl_buffer_free(buf);
#endif
ml_close(buf, TRUE); /* close and delete the memline/memfile */
buf->b_ml.ml_line_count = 0; /* no lines in buffer */
if ((flags & BFA_KEEP_UNDO) == 0)
{
u_blockfree(buf); /* free the memory allocated for undo */
u_clearall(buf); /* reset all undo information */
}
#ifdef FEAT_SYN_HL
syntax_clear(&buf->b_s); /* reset syntax info */
#endif
buf->b_flags &= ~BF_READERR; /* a read error is no longer relevant */
}
/*
* Free a buffer structure and the things it contains related to the buffer
* itself (not the file, that must have been done already).
*/
static void
free_buffer(buf)
buf_T *buf;
{
free_buffer_stuff(buf, TRUE);
#ifdef FEAT_EVAL
unref_var_dict(buf->b_vars);
#endif
#ifdef FEAT_LUA
lua_buffer_free(buf);
#endif
#ifdef FEAT_MZSCHEME
mzscheme_buffer_free(buf);
#endif
#ifdef FEAT_PERL
perl_buf_free(buf);
#endif
#ifdef FEAT_PYTHON
python_buffer_free(buf);
#endif
#ifdef FEAT_PYTHON3
python3_buffer_free(buf);
#endif
#ifdef FEAT_RUBY
ruby_buffer_free(buf);
#endif
#ifdef FEAT_AUTOCMD
aubuflocal_remove(buf);
#endif
vim_free(buf);
}
/*
* Free stuff in the buffer for ":bdel" and when wiping out the buffer.
*/
static void
free_buffer_stuff(buf, free_options)
buf_T *buf;
int free_options; /* free options as well */
{
if (free_options)
{
clear_wininfo(buf); /* including window-local options */
free_buf_options(buf, TRUE);
#ifdef FEAT_SPELL
ga_clear(&buf->b_s.b_langp);
#endif
}
#ifdef FEAT_EVAL
vars_clear(&buf->b_vars->dv_hashtab); /* free all internal variables */
hash_init(&buf->b_vars->dv_hashtab);
#endif
#ifdef FEAT_USR_CMDS
uc_clear(&buf->b_ucmds); /* clear local user commands */
#endif
#ifdef FEAT_SIGNS
buf_delete_signs(buf); /* delete any signs */
#endif
#ifdef FEAT_NETBEANS_INTG
netbeans_file_killed(buf);
#endif
#ifdef FEAT_LOCALMAP
map_clear_int(buf, MAP_ALL_MODES, TRUE, FALSE); /* clear local mappings */
map_clear_int(buf, MAP_ALL_MODES, TRUE, TRUE); /* clear local abbrevs */
#endif
#ifdef FEAT_MBYTE
vim_free(buf->b_start_fenc);
buf->b_start_fenc = NULL;
#endif
}
/*
* Free the b_wininfo list for buffer "buf".
*/
static void
clear_wininfo(buf)
buf_T *buf;
{
wininfo_T *wip;
while (buf->b_wininfo != NULL)
{
wip = buf->b_wininfo;
buf->b_wininfo = wip->wi_next;
if (wip->wi_optset)
{
clear_winopt(&wip->wi_opt);
#ifdef FEAT_FOLDING
deleteFoldRecurse(&wip->wi_folds);
#endif
}
vim_free(wip);
}
}
#if defined(FEAT_LISTCMDS) || defined(PROTO)
/*
* Go to another buffer. Handles the result of the ATTENTION dialog.
*/
void
goto_buffer(eap, start, dir, count)
exarg_T *eap;
int start;
int dir;
int count;
{
# if defined(FEAT_WINDOWS) && defined(HAS_SWAP_EXISTS_ACTION)
buf_T *old_curbuf = curbuf;
swap_exists_action = SEA_DIALOG;
# endif
(void)do_buffer(*eap->cmd == 's' ? DOBUF_SPLIT : DOBUF_GOTO,
start, dir, count, eap->forceit);
# if defined(FEAT_WINDOWS) && defined(HAS_SWAP_EXISTS_ACTION)
if (swap_exists_action == SEA_QUIT && *eap->cmd == 's')
{
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
cleanup_T cs;
/* Reset the error/interrupt/exception state here so that
* aborting() returns FALSE when closing a window. */
enter_cleanup(&cs);
# endif
/* Quitting means closing the split window, nothing else. */
win_close(curwin, TRUE);
swap_exists_action = SEA_NONE;
swap_exists_did_quit = TRUE;
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
# endif
}
else
handle_swap_exists(old_curbuf);
# endif
}
#endif
#if defined(HAS_SWAP_EXISTS_ACTION) || defined(PROTO)
/*
* Handle the situation of swap_exists_action being set.
* It is allowed for "old_curbuf" to be NULL or invalid.
*/
void
handle_swap_exists(old_curbuf)
buf_T *old_curbuf;
{
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
cleanup_T cs;
# endif
#ifdef FEAT_SYN_HL
long old_tw = curbuf->b_p_tw;
#endif
if (swap_exists_action == SEA_QUIT)
{
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
/* Reset the error/interrupt/exception state here so that
* aborting() returns FALSE when closing a buffer. */
enter_cleanup(&cs);
# endif
/* User selected Quit at ATTENTION prompt. Go back to previous
* buffer. If that buffer is gone or the same as the current one,
* open a new, empty buffer. */
swap_exists_action = SEA_NONE; /* don't want it again */
swap_exists_did_quit = TRUE;
close_buffer(curwin, curbuf, DOBUF_UNLOAD, FALSE);
if (!buf_valid(old_curbuf) || old_curbuf == curbuf)
old_curbuf = buflist_new(NULL, NULL, 1L, BLN_CURBUF | BLN_LISTED);
if (old_curbuf != NULL)
{
enter_buffer(old_curbuf);
#ifdef FEAT_SYN_HL
if (old_tw != curbuf->b_p_tw)
check_colorcolumn(curwin);
#endif
}
/* If "old_curbuf" is NULL we are in big trouble here... */
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
# endif
}
else if (swap_exists_action == SEA_RECOVER)
{
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
/* Reset the error/interrupt/exception state here so that
* aborting() returns FALSE when closing a buffer. */
enter_cleanup(&cs);
# endif
/* User selected Recover at ATTENTION prompt. */
msg_scroll = TRUE;
ml_recover();
MSG_PUTS("\n"); /* don't overwrite the last message */
cmdline_row = msg_row;
do_modelines(0);
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
# endif
}
swap_exists_action = SEA_NONE;
}
#endif
#if defined(FEAT_LISTCMDS) || defined(PROTO)
/*
* do_bufdel() - delete or unload buffer(s)
*
* addr_count == 0: ":bdel" - delete current buffer
* addr_count == 1: ":N bdel" or ":bdel N [N ..]" - first delete
* buffer "end_bnr", then any other arguments.
* addr_count == 2: ":N,N bdel" - delete buffers in range
*
* command can be DOBUF_UNLOAD (":bunload"), DOBUF_WIPE (":bwipeout") or
* DOBUF_DEL (":bdel")
*
* Returns error message or NULL
*/
char_u *
do_bufdel(command, arg, addr_count, start_bnr, end_bnr, forceit)
int command;
char_u *arg; /* pointer to extra arguments */
int addr_count;
int start_bnr; /* first buffer number in a range */
int end_bnr; /* buffer nr or last buffer nr in a range */
int forceit;
{
int do_current = 0; /* delete current buffer? */
int deleted = 0; /* number of buffers deleted */
char_u *errormsg = NULL; /* return value */
int bnr; /* buffer number */
char_u *p;
if (addr_count == 0)
{
(void)do_buffer(command, DOBUF_CURRENT, FORWARD, 0, forceit);
}
else
{
if (addr_count == 2)
{
if (*arg) /* both range and argument is not allowed */
return (char_u *)_(e_trailing);
bnr = start_bnr;
}
else /* addr_count == 1 */
bnr = end_bnr;
for ( ;!got_int; ui_breakcheck())
{
/*
* delete the current buffer last, otherwise when the
* current buffer is deleted, the next buffer becomes
* the current one and will be loaded, which may then
* also be deleted, etc.
*/
if (bnr == curbuf->b_fnum)
do_current = bnr;
else if (do_buffer(command, DOBUF_FIRST, FORWARD, (int)bnr,
forceit) == OK)
++deleted;
/*
* find next buffer number to delete/unload
*/
if (addr_count == 2)
{
if (++bnr > end_bnr)
break;
}
else /* addr_count == 1 */
{
arg = skipwhite(arg);
if (*arg == NUL)
break;
if (!VIM_ISDIGIT(*arg))
{
p = skiptowhite_esc(arg);
bnr = buflist_findpat(arg, p, command == DOBUF_WIPE,
FALSE, FALSE);
if (bnr < 0) /* failed */
break;
arg = p;
}
else
bnr = getdigits(&arg);
}
}
if (!got_int && do_current && do_buffer(command, DOBUF_FIRST,
FORWARD, do_current, forceit) == OK)
++deleted;
if (deleted == 0)
{
if (command == DOBUF_UNLOAD)
STRCPY(IObuff, _("E515: No buffers were unloaded"));
else if (command == DOBUF_DEL)
STRCPY(IObuff, _("E516: No buffers were deleted"));
else
STRCPY(IObuff, _("E517: No buffers were wiped out"));
errormsg = IObuff;
}
else if (deleted >= p_report)
{
if (command == DOBUF_UNLOAD)
{
if (deleted == 1)
MSG(_("1 buffer unloaded"));
else
smsg((char_u *)_("%d buffers unloaded"), deleted);
}
else if (command == DOBUF_DEL)
{
if (deleted == 1)
MSG(_("1 buffer deleted"));
else
smsg((char_u *)_("%d buffers deleted"), deleted);
}
else
{
if (deleted == 1)
MSG(_("1 buffer wiped out"));
else
smsg((char_u *)_("%d buffers wiped out"), deleted);
}
}
}
return errormsg;
}
/*
* Implementation of the commands for the buffer list.
*
* action == DOBUF_GOTO go to specified buffer
* action == DOBUF_SPLIT split window and go to specified buffer
* action == DOBUF_UNLOAD unload specified buffer(s)
* action == DOBUF_DEL delete specified buffer(s) from buffer list
* action == DOBUF_WIPE delete specified buffer(s) really
*
* start == DOBUF_CURRENT go to "count" buffer from current buffer
* start == DOBUF_FIRST go to "count" buffer from first buffer
* start == DOBUF_LAST go to "count" buffer from last buffer
* start == DOBUF_MOD go to "count" modified buffer from current buffer