www.pudn.com > vim53src.zip > buffer.c
/* 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.
*/
/*
* 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"
static void enter_buffer __ARGS((BUF *));
static char_u *buflist_match __ARGS((vim_regexp *prog, BUF *buf));
static char_u *buflist_match_try __ARGS((vim_regexp *prog, char_u *name));
static void buflist_setfpos __ARGS((BUF *, linenr_t, colnr_t));
static FPOS *buflist_findfpos __ARGS((BUF *buf));
static int append_arg_number __ARGS((char_u *, int, int));
static void free_buffer __ARGS((BUF *));
/*
* 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)
int read_stdin; /* read file from stdin */
{
int retval = OK;
#ifdef AUTOCMD
BUF *old_curbuf;
BUF *new_curbuf;
#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() == 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, FALSE, 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 loose.
*/
if (curbuf == NULL)
{
EMSG("Cannot allocate buffer, exiting...");
getout(2);
}
EMSG("Cannot allocate buffer, using other one...");
enter_buffer(curbuf);
return FAIL;
}
#ifdef AUTOCMD
/* The autocommands in readfile() may change the buffer, but only AFTER
* reading the file. */
old_curbuf = curbuf;
modified_was_set = FALSE;
#endif
if (curbuf->b_ffname != NULL)
retval = readfile(curbuf->b_ffname, curbuf->b_fname,
(linenr_t)0, (linenr_t)0, (linenr_t)MAXLNUM, READ_NEW);
else if (read_stdin)
retval = readfile(NULL, NULL, (linenr_t)0,
(linenr_t)0, (linenr_t)MAXLNUM, READ_NEW + READ_STDIN);
else
{
MSG("Empty Buffer");
msg_col = 0;
msg_didout = FALSE; /* overwrite this message whenever you like */
}
/* if first time loading this buffer, init chartab */
if (curbuf->b_flags & BF_NEVERLOADED)
init_chartab();
/*
* 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 -". */
if ((read_stdin && !readonlymode)
#ifdef AUTOCMD
|| modified_was_set /* ":set modified" used in autocmd */
#endif
)
changed();
else if (retval != FAIL)
unchanged(curbuf, FALSE);
curbuf->b_start_ffc = *curbuf->b_p_ff; /* keep this fileformat */
/* require "!" to overwrite the file, because it wasn't read completely */
if (got_int)
curbuf->b_notedited = TRUE;
#ifdef AUTOCMD
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
#endif
if (retval != FAIL)
{
#ifdef AUTOCMD
/*
* The autocommands may have changed the current buffer. Apply the
* modelines to the correct buffer, if it still exists.
*/
if (buf_valid(old_curbuf))
{
new_curbuf = curbuf;
curbuf = old_curbuf;
curwin->w_buffer = old_curbuf;
#endif
do_modelines();
curbuf->b_flags &= ~(BF_CHECK_RO | BF_NEVERLOADED);
#ifdef AUTOCMD
curbuf = new_curbuf;
curwin->w_buffer = new_curbuf;
}
#endif
}
return retval;
}
/*
* Return TRUE if "buf" points to a valid buffer (in the buffer list).
*/
int
buf_valid(buf)
BUF *buf;
{
BUF *bp;
for (bp = firstbuf; bp != NULL; bp = bp->b_next)
if (bp == buf)
return TRUE;
return FALSE;
}
/*
* Close the link to a buffer. If "free_buf" is TRUE free the buffer if it
* becomes unreferenced. The caller should get a new buffer very soon!
* if 'del_buf' is TRUE, remove the buffer from the buffer list.
*/
void
close_buffer(win, buf, free_buf, del_buf)
WIN *win; /* if not NULL, set b_last_cursor */
BUF *buf;
int free_buf;
int del_buf;
{
if (buf->b_nwindows > 0)
--buf->b_nwindows;
if (buf->b_nwindows == 0 && win != NULL)
{
set_last_cursor(win); /* may set b_last_cursor */
if (win == curwin && curwin->w_cursor.lnum != 1)
/* and remember last cursor position */
buflist_setfpos(buf, curwin->w_cursor.lnum, curwin->w_cursor.col);
}
if (buf->b_nwindows > 0 || !free_buf)
{
if (buf == curbuf)
u_sync(); /* sync undo before going to another buffer */
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.
*/
buf_freeall(buf, del_buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
/*
* Remove the buffer from the list.
*/
if (del_buf)
{
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
buf_clear(buf);
}
/*
* buf_clear() - make buffer empty
*/
void
buf_clear(buf)
BUF *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_ml.ml_mfp = NULL;
buf->b_ml.ml_flags = ML_EMPTY; /* empty buffer */
}
/*
* buf_freeall() - free all things allocated for the buffer
*/
void
buf_freeall(buf, del_buf)
BUF *buf;
int del_buf; /* buffer is going to be deleted */
{
#ifdef AUTOCMD
apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, FALSE, buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
if (del_buf)
{
apply_autocmds(EVENT_BUFDELETE, buf->b_fname, buf->b_fname, FALSE, buf);
if (!buf_valid(buf)) /* autocommands may delete the buffer */
return;
}
#endif
#ifdef HAVE_TCL
tcl_buffer_free(buf);
#endif
u_blockfree(buf); /* free the memory allocated for undo */
ml_close(buf, TRUE); /* close and delete the memline/memfile */
buf->b_ml.ml_line_count = 0; /* no lines in buffer */
u_clearall(buf); /* reset all undo information */
#ifdef SYNTAX_HL
syntax_clear(buf); /* reset syntax info */
#endif
#ifdef WANT_EVAL
var_clear(&buf->b_vars); /* free all internal variables */
#endif
}
/*
* Free a buffer structure and some of the things it contains.
*/
static void
free_buffer(buf)
BUF *buf;
{
WINFPOS *wlp;
/* Free the b_winfpos list for buffer "buf". */
while (buf->b_winfpos != NULL)
{
wlp = buf->b_winfpos;
buf->b_winfpos = wlp->wl_next;
vim_free(wlp);
}
#ifdef HAVE_PERL_INTERP
perl_buf_free(buf);
#endif
#ifdef HAVE_PYTHON
python_buffer_free(buf);
#endif
free_buf_options(buf, TRUE);
vim_free(buf);
}
/*
* 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") 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 number or last buffer number 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 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 (!isdigit(*arg))
{
p = skiptowhite_esc(arg);
bnr = buflist_findpat(arg, p);
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)
{
sprintf((char *)IObuff, "No buffers were %s",
command == DOBUF_UNLOAD ? "unloaded" : "deleted");
errormsg = IObuff;
}
else
smsg((char_u *)"%d buffer%s %s", deleted,
plural((long)deleted),
command == DOBUF_UNLOAD ? "unloaded" : "deleted");
}
return errormsg;
}
/*
* Implementation of the command 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)
*
* 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
*
* Return FAIL or OK.
*/
int
do_buffer(action, start, dir, count, forceit)
int action;
int start;
int dir; /* FORWARD or BACKWARD */
int count; /* buffer number or number of buffers */
int forceit; /* TRUE for :...! */
{
BUF *buf;
BUF *delbuf;
int retval;
int forward;
switch (start)
{
case DOBUF_FIRST: buf = firstbuf; break;
case DOBUF_LAST: buf = lastbuf; break;
default: buf = curbuf; break;
}
if (start == DOBUF_MOD) /* find next modified buffer */
{
while (count-- > 0)
{
do
{
buf = buf->b_next;
if (buf == NULL)
buf = firstbuf;
}
while (buf != curbuf && !buf_changed(buf));
}
if (!buf_changed(buf))
{
EMSG("No modified buffer found");
return FAIL;
}
}
else if (start == DOBUF_FIRST && count) /* find specified buffer number */
{
while (buf != NULL && buf->b_fnum != count)
buf = buf->b_next;
}
else
{
while (count-- > 0)
{
if (dir == FORWARD)
{
buf = buf->b_next;
if (buf == NULL)
buf = firstbuf;
}
else
{
buf = buf->b_prev;
if (buf == NULL)
buf = lastbuf;
}
/* in non-help buffer, skip help buffers, and vv */
if ((buf->b_help) !=
(start == DOBUF_LAST ? lastbuf : curbuf)->b_help)
count++;
}
}
if (buf == NULL) /* could not find it */
{
if (start == DOBUF_FIRST)
{
/* don't warn when deleting */
if (action != DOBUF_UNLOAD && action != DOBUF_DEL)
EMSGN("Cannot go to buffer %ld", count);
}
else if (dir == FORWARD)
EMSG("Cannot go beyond last buffer");
else
EMSG("Cannot go before first buffer");
return FAIL;
}
#ifdef USE_GUI
need_mouse_correct = TRUE;
#endif
/*
* delete buffer buf from memory and/or the list
*/
if (action == DOBUF_UNLOAD || action == DOBUF_DEL)
{
if (!forceit && buf_changed(buf))
{
EMSGN("No write since last change for buffer %ld (use ! to override)",
buf->b_fnum);
return FAIL;
}
/*
* If deleting last buffer, make it empty.
* The last buffer cannot be unloaded.
*/
if (firstbuf->b_next == NULL)
{
if (action == DOBUF_UNLOAD)
{
EMSG("Cannot unload last buffer");
return FAIL;
}
/* Close any other windows on this buffer, then make it empty. */
close_others(FALSE, TRUE);
buf = curbuf;
setpcmark();
retval = do_ecmd(0, NULL, NULL, NULL, (linenr_t)1,
forceit ? ECMD_FORCEIT : 0);
/*
* do_ecmd() may create a new buffer, then we have to delete
* the old one. But do_ecmd() may have done that already, check
* if the buffer still exists.
*/
if (buf != curbuf && buf_valid(buf))
close_buffer(NULL, buf, TRUE, TRUE);
return retval;
}
/*
* If the deleted buffer is the current one, close the current window
* (unless it's the only window).
*/
while (buf == curbuf && firstwin != lastwin)
close_window(curwin, FALSE);
/*
* If the buffer to be deleted is not current one, delete it here.
*/
if (buf != curbuf)
{
close_windows(buf);
if (buf_valid(buf))
close_buffer(NULL, buf, TRUE, action == DOBUF_DEL);
return OK;
}
/*
* Deleting the current buffer: Need to find another buffer to go to.
* There must be another, otherwise it would have been handled above.
* First try to find one that is loaded, after the current buffer,
* then before the current buffer.
*/
forward = TRUE;
buf = curbuf->b_next;
for (;;)
{
if (buf == NULL)
{
if (!forward) /* tried both directions */
break;
buf = curbuf->b_prev;
forward = FALSE;
continue;
}
/* in non-help buffer, try to skip help buffers, and vv */
if (buf->b_ml.ml_mfp != NULL && buf->b_help == curbuf->b_help)
break;
if (forward)
buf = buf->b_next;
else
buf = buf->b_prev;
}
if (buf == NULL) /* No loaded buffers, just take one */
{
if (curbuf->b_next != NULL)
buf = curbuf->b_next;
else
buf = curbuf->b_prev;
}
}
/*
* make buf current buffer
*/
if (action == DOBUF_SPLIT) /* split window first */
{
if (win_split(0, FALSE, FALSE) == FAIL)
return FAIL;
}
/* go to current buffer - nothing to do */
if (buf == curbuf)
return OK;
/*
* Check if the current buffer may be abandoned.
*/
if (action == DOBUF_GOTO && !can_abandon(curbuf, forceit))
{
EMSG(e_nowrtmsg);
return FAIL;
}
setpcmark();
curwin->w_alt_fnum = curbuf->b_fnum; /* remember alternate file */
buflist_altfpos(); /* remember curpos */
/* close_windows() or apply_autocmds() may change curbuf */
delbuf = curbuf;
#ifdef AUTOCMD
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
if (buf_valid(delbuf))
#endif
{
if (action == DOBUF_UNLOAD || action == DOBUF_DEL)
close_windows(delbuf);
if (buf_valid(delbuf))
close_buffer(delbuf == curwin->w_buffer ? curwin : NULL, delbuf,
(action == DOBUF_GOTO && !p_hid && !buf_changed(delbuf))
|| action == DOBUF_UNLOAD || action == DOBUF_DEL,
action == DOBUF_DEL);
}
#ifdef AUTOCMD
if (buf_valid(buf)) /* an autocommand may have deleted buf! */
#endif
enter_buffer(buf);
return OK;
}
/*
* enter a new current buffer.
* (old curbuf must have been freed already)
*/
static void
enter_buffer(buf)
BUF *buf;
{
buf_copy_options(curbuf, buf, BCO_ENTER | BCO_NOHELP);
curwin->w_buffer = buf;
curbuf = buf;
++curbuf->b_nwindows;
if (curbuf->b_ml.ml_mfp == NULL) /* need to load the file */
open_buffer(FALSE);
else
{
need_fileinfo = TRUE; /* display file info after redraw */
buf_check_timestamp(curbuf); /* check if file has changed */
#ifdef AUTOCMD
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
#endif
}
buflist_getfpos(); /* restore curpos.lnum and possibly
* curpos.col */
check_arg_idx(); /* check for valid arg_idx */
maketitle();
scroll_cursor_halfway(FALSE); /* redisplay at correct position */
update_screen(NOT_VALID);
}
/*
* functions for dealing with the buffer list
*/
/*
* Add a file name to the buffer list. Return a pointer to the buffer.
* If the same file name already exists return a pointer to that buffer.
* If it does not exist, or if fname == NULL, a new entry is created.
* If use_curbuf is TRUE, may use current buffer.
* This is the ONLY way to create a new buffer.
*/
static int top_file_num = 1; /* highest file number */
BUF *
buflist_new(ffname, sfname, lnum, use_curbuf)
char_u *ffname;
char_u *sfname;
linenr_t lnum;
int use_curbuf;
{
BUF *buf;
fname_expand(&ffname, &sfname); /* will allocate ffname */
/*
* If file name already exists in the list, update the entry.
*/
if (ffname != NULL && (buf = buflist_findname(ffname)) != NULL)
{
vim_free(ffname);
if (lnum != 0)
buflist_setfpos(buf, lnum, (colnr_t)0);
/* copy the options now, if 'cpo' doesn't have 's' and not done
* already */
buf_copy_options(curbuf, buf, 0);
return buf;
}
/*
* If the current buffer has no name and no contents, use the current
* buffer. Otherwise: Need to allocate a new buffer structure.
*
* This is the ONLY place where a new buffer structure is allocated!
*/
if (use_curbuf && curbuf != NULL && curbuf->b_ffname == NULL &&
curbuf->b_nwindows <= 1 &&
(curbuf->b_ml.ml_mfp == NULL || bufempty()))
{
buf = curbuf;
#ifdef AUTOCMD
/* It's like this buffer is deleted. */
apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
#endif
}
else
{
buf = (BUF *)alloc_clear((unsigned)sizeof(BUF));
if (buf == NULL)
{
vim_free(ffname);
return NULL;
}
}
if (ffname != NULL)
{
buf->b_ffname = ffname;
buf->b_sfname = vim_strsave(sfname);
}
if (buf->b_winfpos == NULL)
buf->b_winfpos = (WINFPOS *)alloc((unsigned)sizeof(WINFPOS));
if ((ffname != NULL && (buf->b_ffname == NULL ||
buf->b_sfname == NULL)) || buf->b_winfpos == NULL)
{
vim_free(buf->b_ffname);
buf->b_ffname = NULL;
vim_free(buf->b_sfname);
buf->b_sfname = NULL;
if (buf != curbuf)
free_buffer(buf);
return NULL;
}
if (buf == curbuf)
{
buf_freeall(buf, FALSE); /* free all things allocated for this buffer */
buf->b_nwindows = 0;
}
else
{
/*
* put new buffer at the end of the buffer list
*/
buf->b_next = NULL;
if (firstbuf == NULL) /* buffer list is empty */
{
buf->b_prev = NULL;
firstbuf = buf;
}
else /* append new buffer at end of list */
{
lastbuf->b_next = buf;
buf->b_prev = lastbuf;
}
lastbuf = buf;
buf->b_fnum = top_file_num++;
if (top_file_num < 0) /* wrap around (may cause duplicates) */
{
EMSG("Warning: List of file names overflow");
ui_delay(3000L, TRUE); /* make sure it is noticed */
top_file_num = 1;
}
buf->b_winfpos->wl_fpos.lnum = lnum;
buf->b_winfpos->wl_fpos.col = 0;
buf->b_winfpos->wl_next = NULL;
buf->b_winfpos->wl_prev = NULL;
buf->b_winfpos->wl_win = curwin;
#ifdef WANT_EVAL
var_init(&buf->b_vars); /* init internal variables */
#endif
/*
* Always copy the options from the current buffer.
*/
buf_copy_options(curbuf, buf, BCO_ALWAYS);
}
buf->b_fname = buf->b_sfname;
buf->b_u_synced = TRUE;
buf->b_flags |= BF_CHECK_RO | BF_NEVERLOADED;
buf_clear(buf);
clrallmarks(buf); /* clear marks */
fmarks_check_names(buf); /* check file marks for this file */
return buf;
}
/*
* Get the highest buffer number. Note that some buffers may have been
* deleted.
*/
int
buflist_maxbufnr()
{
return (top_file_num - 1);
}
/*
* Free the memory for the options of a buffer.
*/
void
free_buf_options(buf, free_p_ff)
BUF *buf;
int free_p_ff; /* also free 'fileformat'? */
{
if (free_p_ff)
{
free_string_option(buf->b_p_ff);
#ifdef MULTI_BYTE
free_string_option(buf->b_p_fe);
#endif
}
free_string_option(buf->b_p_mps);
free_string_option(buf->b_p_fo);
free_string_option(buf->b_p_isk);
free_string_option(buf->b_p_com);
free_string_option(buf->b_p_nf);
#ifdef SYNTAX_HL
free_string_option(buf->b_p_syn);
#endif
#ifdef CINDENT
free_string_option(buf->b_p_cink);
free_string_option(buf->b_p_cino);
#endif
#if defined(CINDENT) || defined(SMARTINDENT)
free_string_option(buf->b_p_cinw);
#endif
#ifdef INSERT_EXPAND
free_string_option(buf->b_p_cpt);
#endif
}
/*
* get alternate file n
* set linenr to lnum or altfpos.lnum if lnum == 0
* also set cursor column to altfpos.col if 'startofline' is not set.
* if (options & GETF_SETMARK) call setpcmark()
* if (options & GETF_ALT) we are jumping to an alternate file.
*
* return FAIL for failure, OK for success
*/
int
buflist_getfile(n, lnum, options, forceit)
int n;
linenr_t lnum;
int options;
int forceit;
{
BUF *buf;
FPOS *fpos;
colnr_t col;
buf = buflist_findnr(n);
if (buf == NULL)
{
if ((options & GETF_ALT) && n == 0)
emsg(e_noalt);
else
EMSGN("buffer %ld not found", n);
return FAIL;
}
/* if alternate file is the current buffer, nothing to do */
if (buf == curbuf)
return OK;
/* altfpos may be changed by getfile(), get it now */
if (lnum == 0)
{
fpos = buflist_findfpos(buf);
lnum = fpos->lnum;
col = fpos->col;
}
else
col = 0;
++RedrawingDisabled;
if (getfile(buf->b_fnum, NULL, NULL, (options & GETF_SETMARK),
lnum, forceit) <= 0)
{
--RedrawingDisabled;
/* cursor is at to BOL and w_cursor.lnum is checked due to getfile() */
if (!p_sol && col != 0)
{
curwin->w_cursor.col = col;
check_cursor_col();
}
return OK;
}
--RedrawingDisabled;
return FAIL;
}
/*
* go to the last know line number for the current buffer
*/
void
buflist_getfpos()
{
FPOS *fpos;
fpos = buflist_findfpos(curbuf);
curwin->w_cursor.lnum = fpos->lnum;
check_cursor_lnum();
if (p_sol)
curwin->w_cursor.col = 0;
else
{
curwin->w_cursor.col = fpos->col;
check_cursor_col();
}
}
/*
* find file in buffer list by name (it has to be for the current window)
* 'ffname' must have a full path.
*/
BUF *
buflist_findname(ffname)
char_u *ffname;
{
BUF *buf;
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
if (buf->b_ffname != NULL && fnamecmp(ffname, buf->b_ffname) == 0)
return (buf);
return NULL;
}
/*
* Find file in buffer list by a regexppattern.
* Return fnum of the found buffer, < 0 for error.
*/
int
buflist_findpat(pattern, pattern_end)
char_u *pattern;
char_u *pattern_end; /* pointer to first char after pattern */
{
BUF *buf;
vim_regexp *prog;
int fnum = -1;
char_u *pat;
char_u *match;
int attempt;
char_u *p;
if (pattern_end == pattern + 1 && (*pattern == '%' || *pattern == '#'))
{
if (*pattern == '%')
fnum = curbuf->b_fnum;
else
fnum = curwin->w_alt_fnum;
}
/*
* Try four ways of matching:
* attempt == 0: without '^' or '$' (at any position)
* attempt == 1: with '^' at start (only at postion 0)
* attempt == 2: with '$' at end (only match at end)
* attempt == 3: with '^' at start and '$' at end (only full match)
*/
else for (attempt = 0; attempt <= 3; ++attempt)
{
/* may add '^' and '$' */
pat = file_pat_to_reg_pat(pattern, pattern_end, NULL);
if (pat == NULL)
return -1;
if (attempt < 2)
{
p = pat + STRLEN(pat) - 1;
if (p > pat && *p == '$') /* remove '$' */
*p = NUL;
}
p = pat;
if (*p == '^' && !(attempt & 1)) /* remove '^' */
++p;
prog = vim_regcomp(p, (int)p_magic);
vim_free(pat);
if (prog == NULL)
return -1;
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
{
match = buflist_match(prog, buf);
if (match != NULL)
{
if (fnum >= 0) /* already found a match */
{
fnum = -2;
break;
}
fnum = buf->b_fnum; /* remember first match */
}
}
vim_free(prog);
if (fnum >= 0) /* found one match */
break;
}
if (fnum == -2)
EMSG2("More than one match for %s", pattern);
else if (fnum < 1)
EMSG2("No matching buffer for %s", pattern);
return fnum;
}
/*
* Find all buffer names that match.
* For command line expansion of ":buf" and ":sbuf".
* Return OK if matches found, FAIL otherwise.
*/
int
ExpandBufnames(pat, num_file, file, options)
char_u *pat;
int *num_file;
char_u ***file;
int options;
{
int count = 0;
BUF *buf;
int round;
char_u *p;
int attempt;
vim_regexp *prog;
*num_file = 0; /* return values in case of FAIL */
*file = NULL;
/*
* attempt == 1: try match with '^', match at start
* attempt == 2: try match without '^', match anywhere
*/
for (attempt = 1; attempt <= 2; ++attempt)
{
if (attempt == 2)
{
if (*pat != '^') /* there's no '^', no need to try again */
break;
++pat; /* skip the '^' */
}
prog = vim_regcomp(pat, (int)p_magic);
if (prog == NULL)
return FAIL;
/*
* round == 1: Count the matches.
* round == 2: Build the array to keep the matches.
*/
for (round = 1; round <= 2; ++round)
{
count = 0;
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
{
p = buflist_match(prog, buf);
if (p != NULL)
{
if (round == 1)
++count;
else
{
if (options & WILD_HOME_REPLACE)
p = home_replace_save(buf, p);
else
p = vim_strsave(p);
(*file)[count++] = p;
}
}
}
if (count == 0) /* no match found, break here */
break;
if (round == 1)
{
*file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
if (*file == NULL)
{
vim_free(prog);
return FAIL;
}
}
}
vim_free(prog);
if (count) /* match(es) found, break here */
break;
}
*num_file = count;
return (count == 0 ? FAIL : OK);
}
/*
* Check for a match on the file name for buffer "buf" with regex prog "prog".
*/
static char_u *
buflist_match(prog, buf)
vim_regexp *prog;
BUF *buf;
{
char_u *match;
#ifdef CASE_INSENSITIVE_FILENAME
int save_reg_ic = reg_ic;
reg_ic = TRUE; /* Always ignore case */
#endif
/* First try the short file name, then the long file name. */
match = buflist_match_try(prog, buf->b_sfname);
if (match == NULL)
match = buflist_match_try(prog, buf->b_ffname);
#ifdef CASE_INSENSITIVE_FILENAME
reg_ic = save_reg_ic;
#endif
return match;
}
static char_u *
buflist_match_try(prog, name)
vim_regexp *prog;
char_u *name;
{
char_u *match = NULL;
char_u *p;
if (name != NULL)
{
if (vim_regexec(prog, name, TRUE) != 0)
match = name;
else
{
/* Replace $(HOME) with '~' and try matching again. */
p = home_replace_save(NULL, name);
if (p != NULL && vim_regexec(prog, p, TRUE) != 0)
match = name;
vim_free(p);
}
}
return match;
}
/*
* find file in buffer name list by number
*/
BUF *
buflist_findnr(nr)
int nr;
{
BUF *buf;
if (nr == 0)
nr = curwin->w_alt_fnum;
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
if (buf->b_fnum == nr)
return (buf);
return NULL;
}
/*
* Get name of file 'n' in the buffer list.
* home_replace() is used to shorten the file name (used for marks).
* Returns a pointer to allocated memory, of NULL when failed.
*/
char_u *
buflist_nr2name(n, fullname, helptail)
int n;
int fullname;
int helptail; /* for help buffers return tail only */
{
BUF *buf;
buf = buflist_findnr(n);
if (buf == NULL)
return NULL;
return home_replace_save(helptail ? buf : NULL,
fullname ? buf->b_ffname : buf->b_fname);
}
/*
* set the lnum and col for the buffer 'buf' and the current window
*/
static void
buflist_setfpos(buf, lnum, col)
BUF *buf;
linenr_t lnum;
colnr_t col;
{
WINFPOS *wlp;
for (wlp = buf->b_winfpos; wlp != NULL; wlp = wlp->wl_next)
if (wlp->wl_win == curwin)
break;
if (wlp == NULL) /* make new entry */
{
wlp = (WINFPOS *)alloc((unsigned)sizeof(WINFPOS));
if (wlp == NULL)
return;
wlp->wl_win = curwin;
}
else /* remove entry from list */
{
if (wlp->wl_prev)
wlp->wl_prev->wl_next = wlp->wl_next;
else
buf->b_winfpos = wlp->wl_next;
if (wlp->wl_next)
wlp->wl_next->wl_prev = wlp->wl_prev;
}
wlp->wl_fpos.lnum = lnum;
wlp->wl_fpos.col = col;
/* insert entry in front of the list */
wlp->wl_next = buf->b_winfpos;
buf->b_winfpos = wlp;
wlp->wl_prev = NULL;
if (wlp->wl_next)
wlp->wl_next->wl_prev = wlp;
return;
}
/*
* find the position (lnum and col) for the buffer 'buf' for the current window
* returns a pointer to no_position if no position is found
*/
static FPOS *
buflist_findfpos(buf)
BUF *buf;
{
WINFPOS *wlp;
static FPOS no_position = {1, 0};
for (wlp = buf->b_winfpos; wlp != NULL; wlp = wlp->wl_next)
if (wlp->wl_win == curwin)
break;
if (wlp == NULL) /* if no fpos for curwin, use the first in the list */
wlp = buf->b_winfpos;
if (wlp != NULL)
return &(wlp->wl_fpos);
else
return &no_position;
}
/*
* find the lnum for the buffer 'buf' for the current window
*/
linenr_t
buflist_findlnum(buf)
BUF *buf;
{
return buflist_findfpos(buf)->lnum;
}
/*
* list all know file names (for :files and :buffers command)
*/
void
buflist_list()
{
BUF *buf;
int len;
for (buf = firstbuf; buf != NULL && !got_int; buf = buf->b_next)
{
msg_putchar('\n');
if (buf->b_fname == NULL)
STRCPY(NameBuff, "No File");
else
home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, TRUE);
sprintf((char *)IObuff, "%3d %c%c%c \"",
buf->b_fnum,
buf == curbuf ? '%' :
(curwin->w_alt_fnum == buf->b_fnum ? '#' : ' '),
buf->b_ml.ml_mfp == NULL ? '-' :
(buf->b_nwindows == 0 ? 'h' : ' '),
buf_changed(buf) ? '+' : ' ');
len = STRLEN(IObuff);
STRNCPY(IObuff + len, NameBuff, IOSIZE - 20 - len);
len = STRLEN(IObuff);
IObuff[len++] = '"';
/*
* try to put the "line" strings in column 40
*/
do
{
IObuff[len++] = ' ';
} while (len < 40 && len < IOSIZE - 18);
sprintf((char *)IObuff + len, "line %ld",
buf == curbuf ? curwin->w_cursor.lnum :
(long)buflist_findlnum(buf));
msg_outtrans(IObuff);
out_flush(); /* output one line at a time */
ui_breakcheck();
}
}
/*
* Get file name and line number for file 'fnum'.
* Used by DoOneCmd() for translating '%' and '#'.
* Used by insert_reg() and cmdline_paste() for '#' register.
* Return FAIL if not found, OK for success.
*/
int
buflist_name_nr(fnum, fname, lnum)
int fnum;
char_u **fname;
linenr_t *lnum;
{
BUF *buf;
buf = buflist_findnr(fnum);
if (buf == NULL || buf->b_fname == NULL)
return FAIL;
*fname = buf->b_fname;
*lnum = buflist_findlnum(buf);
return OK;
}
/*
* Set the current file name to 'ffname', short file name to 'sfname'.
* The file name with the full path is also remembered, for when :cd is used.
* Returns FAIL for failure (file name already in use by other buffer)
* OK otherwise.
*/
int
setfname(ffname, sfname, message)
char_u *ffname, *sfname;
int message;
{
BUF *buf;
if (ffname == NULL || *ffname == NUL)
{
vim_free(curbuf->b_ffname);
vim_free(curbuf->b_sfname);
curbuf->b_ffname = NULL;
curbuf->b_sfname = NULL;
}
else
{
fname_expand(&ffname, &sfname); /* will allocate ffname */
if (ffname == NULL) /* out of memory */
return FAIL;
#ifdef USE_FNAME_CASE
# ifdef USE_LONG_FNAME
if (USE_LONG_FNAME)
# endif
fname_case(sfname); /* set correct case for short file name */
#endif
/*
* if the file name is already used in another buffer:
* - if the buffer is loaded, fail
* - if the buffer is not loaded, delete it from the list
*/
buf = buflist_findname(ffname);
if (buf != NULL && buf != curbuf)
{
if (buf->b_ml.ml_mfp != NULL) /* it's loaded, fail */
{
if (message)
EMSG("Buffer with this name already exists");
vim_free(ffname);
return FAIL;
}
close_buffer(NULL, buf, TRUE, TRUE); /* delete from the list */
}
sfname = vim_strsave(sfname);
if (ffname == NULL || sfname == NULL)
{
vim_free(sfname);
vim_free(ffname);
return FAIL;
}
vim_free(curbuf->b_ffname);
vim_free(curbuf->b_sfname);
curbuf->b_ffname = ffname;
curbuf->b_sfname = sfname;
}
curbuf->b_fname = curbuf->b_sfname;
#ifndef SHORT_FNAME
curbuf->b_shortname = FALSE;
#endif
/*
* If the file name changed, also change the name of the swapfile
*/
if (curbuf->b_ml.ml_mfp != NULL)
ml_setname();
check_arg_idx(); /* check file name for arg list */
maketitle(); /* set window title */
status_redraw_all(); /* status lines need to be redrawn */
fmarks_check_names(curbuf); /* check named file marks */
ml_timestamp(curbuf); /* reset timestamp */
return OK;
}
/*
* set alternate file name for current window
*
* Used by do_one_cmd(), do_write() and do_ecmd().
*/
void
setaltfname(ffname, sfname, lnum)
char_u *ffname;
char_u *sfname;
linenr_t lnum;
{
BUF *buf;
buf = buflist_new(ffname, sfname, lnum, FALSE);
if (buf != NULL)
curwin->w_alt_fnum = buf->b_fnum;
}
/*
* Get alternate file name for current window.
* Return NULL if there isn't any, and give error message if requested.
*/
char_u *
getaltfname(errmsg)
int errmsg; /* give error message */
{
char_u *fname;
linenr_t dummy;
if (buflist_name_nr(0, &fname, &dummy) == FAIL)
{
if (errmsg)
emsg(e_noalt);
return NULL;
}
return fname;
}
/*
* add a file name to the buflist and return its number
*
* used by qf_init(), main() and doarglist()
*/
int
buflist_add(fname)
char_u *fname;
{
BUF *buf;
buf = buflist_new(fname, NULL, (linenr_t)0, FALSE);
if (buf != NULL)
return buf->b_fnum;
return 0;
}
/*
* set alternate cursor position for current window
*/
void
buflist_altfpos()
{
buflist_setfpos(curbuf, curwin->w_cursor.lnum, curwin->w_cursor.col);
}
/*
* Return TRUE if 'fname' is not the same file as current file.
* Fname must have a full path (expanded by mch_FullName).
*/
int
otherfile(fname)
char_u *fname;
{ /* no name is different */
if (fname == NULL || *fname == NUL || curbuf->b_ffname == NULL)
return TRUE;
if (fnamecmp(fname, curbuf->b_ffname) == 0)
return FALSE;
#ifdef UNIX
{
struct stat st1, st2;
/* Use stat() to check if the files are the same, even when the names
* are different (possible with links) */
if ( stat((char *)fname, &st1) >= 0
&& stat((char *)curbuf->b_ffname, &st2) >= 0
&& st1.st_dev == st2.st_dev
&& st1.st_ino == st2.st_ino)
return FALSE;
}
#endif
return TRUE;
}
void
fileinfo(fullname, shorthelp, dont_truncate)
int fullname;
int shorthelp;
int dont_truncate;
{
char_u *name;
int n;
char_u *p;
char_u *buffer;
buffer = alloc(IOSIZE);
if (buffer == NULL)
return;
if (fullname > 1) /* 2 CTRL-G: include buffer number */
{
sprintf((char *)buffer, "buf %d: ", curbuf->b_fnum);
p = buffer + STRLEN(buffer);
}
else
p = buffer;
*p++ = '"';
if (curbuf->b_ffname == NULL)
STRCPY(p, "No File");
else
{
if (!fullname && curbuf->b_fname != NULL)
name = curbuf->b_fname;
else
name = curbuf->b_ffname;
home_replace(shorthelp ? curbuf : NULL, name, p,
(int)(IOSIZE - (p - buffer)), TRUE);
}
sprintf((char *)buffer + STRLEN(buffer),
"\"%s%s%s%s",
curbuf_changed() ? (shortmess(SHM_MOD) ?
" [+]" : " [Modified]") : " ",
curbuf->b_notedited ? "[Not edited]" : "",
curbuf->b_p_ro ? (shortmess(SHM_RO) ? "[RO]" : "[readonly]") : "",
(curbuf_changed() || curbuf->b_notedited || curbuf->b_p_ro) ?
" " : "");
n = (int)(((long)curwin->w_cursor.lnum * 100L) /
(long)curbuf->b_ml.ml_line_count);
if (curbuf->b_ml.ml_flags & ML_EMPTY)
{
STRCPY(buffer + STRLEN(buffer), no_lines_msg);
}
else if (p_ru)
{
/* Current line and column are already on the screen -- webb */
sprintf((char *)buffer + STRLEN(buffer),
"%ld line%s --%d%%--",
(long)curbuf->b_ml.ml_line_count,
plural((long)curbuf->b_ml.ml_line_count),
n);
}
else
{
sprintf((char *)buffer + STRLEN(buffer),
"line %ld of %ld --%d%%-- col ",
(long)curwin->w_cursor.lnum,
(long)curbuf->b_ml.ml_line_count,
n);
validate_virtcol();
col_print(buffer + STRLEN(buffer),
(int)curwin->w_cursor.col + 1, (int)curwin->w_virtcol + 1);
}
(void)append_arg_number(buffer, !shortmess(SHM_FILE), IOSIZE);
if (dont_truncate)
msg(buffer);
else
msg_trunc_attr(buffer, FALSE, 0);
vim_free(buffer);
}
/*
* Give some info about the position of the cursor (for "g CTRL-G").
*/
void
cursor_pos_info()
{
char_u *p;
char_u buf1[20];
char_u buf2[20];
linenr_t lnum;
long char_count = 0;
long char_count_cursor = 0;
int eol_size;
/*
* Compute the length of the file in characters.
*/
if (curbuf->b_ml.ml_flags & ML_EMPTY)
{
MSG(no_lines_msg);
}
else
{
if (get_fileformat(curbuf) == EOL_DOS)
eol_size = 2;
else
eol_size = 1;
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
{
if (lnum == curwin->w_cursor.lnum)
char_count_cursor = char_count + curwin->w_cursor.col + 1;
char_count += STRLEN(ml_get(lnum)) + eol_size;
}
if (!curbuf->b_p_eol && curbuf->b_p_bin)
char_count -= eol_size;
p = ml_get_curline();
validate_virtcol();
col_print(buf1, (int)curwin->w_cursor.col + 1,
(int)curwin->w_virtcol + 1);
col_print(buf2, (int)STRLEN(p), linetabsize(p));
sprintf((char *)IObuff, "Col %s of %s; Line %ld of %ld; Char %ld of %ld",
(char *)buf1, (char *)buf2,
(long)curwin->w_cursor.lnum, (long)curbuf->b_ml.ml_line_count,
char_count_cursor, char_count);
msg(IObuff);
}
}
void
col_print(buf, col, vcol)
char_u *buf;
int col;
int vcol;
{
if (col == vcol)
sprintf((char *)buf, "%d", col);
else
sprintf((char *)buf, "%d-%d", col, vcol);
}
/*
* put file name in title bar of window and in icon title
*/
static char_u *lasttitle = NULL;
static char_u *lasticon = NULL;
void
maketitle()
{
char_u *t_name;
char_u *i_name;
int maxlen;
int len;
char_u *buf = NULL;
if (curbuf->b_ffname == NULL)
{
t_name = (char_u *)"VIM -";
i_name = (char_u *)"No File";
}
else
{
buf = alloc(IOSIZE);
if (buf == NULL)
return;
STRCPY(buf, "VIM - ");
home_replace(curbuf, curbuf->b_ffname, buf + 6, IOSIZE - 6, TRUE);
append_arg_number(buf, FALSE, IOSIZE);
if (p_titlelen > 0)
{
maxlen = p_titlelen * Columns / 100;
if (maxlen < 10)
maxlen = 10;
len = STRLEN(buf);
if (len > maxlen)
{
mch_memmove(buf + 6, buf + 6 + len - maxlen,
(size_t)maxlen - 5);
buf[5] = '<';
}
}
t_name = buf;
i_name = gettail(curbuf->b_ffname); /* use file name only for icon */
}
vim_free(lasttitle);
lasttitle = NULL;
if (p_title)
{
if (*p_titlestring)
lasttitle = vim_strsave(p_titlestring);
else if ((lasttitle = alloc((unsigned)(vim_strsize(t_name) + 1)))
!= NULL)
{
*lasttitle = NUL;
while (*t_name)
STRCAT(lasttitle, transchar(*t_name++));
}
}
vim_free(buf);
vim_free(lasticon);
lasticon = NULL;
if (p_icon)
{
if (*p_iconstring)
lasticon = vim_strsave(p_iconstring);
else if ((lasticon = alloc((unsigned)(vim_strsize(i_name) + 1)))
!= NULL)
{
*lasticon = NUL;
while (*i_name)
STRCAT(lasticon, transchar(*i_name++));
}
}
resettitle();
}
/*
* Append (file 2 of 8) to 'buf', if editing more than one file.
* Return TRUE if it was appended.
*/
static int
append_arg_number(buf, add_file, maxlen)
char_u *buf;
int add_file; /* Add "file" before the arg number */
int maxlen; /* maximum nr of chars in buf */
{
char_u *p;
if (arg_file_count <= 1) /* nothing to do */
return FALSE;
p = buf + STRLEN(buf); /* go to the end of the buffer */
if (p - buf + 35 >= maxlen) /* getting too long */
return FALSE;
*p++ = ' ';
*p++ = '(';
if (add_file)
{
STRCPY(p, "file ");
p += 5;
}
sprintf((char *)p, curwin->w_arg_idx_invalid ? "(%d) of %d)" :
"%d of %d)", curwin->w_arg_idx + 1, arg_file_count);
return TRUE;
}
/*
* Put current window title back (used after calling a shell)
*/
void
resettitle()
{
mch_settitle(lasttitle, lasticon);
}
/*
* If fname is not a full path, make it a full path.
* Returns pointer to allocated memory (NULL for failure).
*/
char_u *
fix_fname(fname)
char_u *fname;
{
/*
* Force expanding the path always for Unix, because symbolic links may
* mess up the full path name, even though it starts with a '/'.
*/
#ifdef UNIX
return FullName_save(fname, TRUE);
#else
if (!mch_isFullName(fname))
return FullName_save(fname, FALSE);
fname = vim_strsave(fname);
#ifdef USE_FNAME_CASE
# ifdef USE_LONG_FNAME
if (USE_LONG_FNAME)
# endif
{
if (fname != NULL)
fname_case(fname); /* set correct case for file name */
}
#endif
return fname;
#endif
}
/*
* make ffname a full file name, set sfname to ffname if not NULL
* ffname becomes a pointer to allocated memory (or NULL).
*/
void
fname_expand(ffname, sfname)
char_u **ffname;
char_u **sfname;
{
if (*ffname == NULL) /* if no file name given, nothing to do */
return;
if (*sfname == NULL) /* if no short file name given, use ffname */
*sfname = *ffname;
*ffname = fix_fname(*ffname); /* expand to full path */
}
/*
* do_arg_all(): Open up to 'count' windows, one for each argument.
*/
void
do_arg_all(count, forceit)
int count;
int forceit; /* hide buffers in current windows */
{
int i;
WIN *wp, *wpnext;
char_u *opened; /* array of flags for which args are open */
int opened_len; /* lenght of opened[] */
int use_firstwin = FALSE; /* use first window for arglist */
int split_ret = OK;
int p_sb_save;
int p_ea_save;
if (arg_file_count <= 0)
{
/* Don't give an error message. We don't want it when the ":all"
* command is in the .vimrc. */
return;
}
setpcmark();
opened_len = arg_file_count;
opened = alloc_clear((unsigned)opened_len);
if (opened == NULL)
return;
#ifdef USE_GUI
need_mouse_correct = TRUE;
#endif
/*
* Try closing all windows that are not in the argument list.
* When 'hidden' or "forceit" set the buffer becomes hidden.
* Windows that have a changed buffer and can't be hidden won't be closed.
*/
for (wp = firstwin; wp != NULL; wp = wpnext)
{
wpnext = wp->w_next;
if (wp->w_buffer->b_ffname == NULL || wp->w_buffer->b_nwindows > 1)
i = arg_file_count;
else
{
/* check if the buffer in this window is in the arglist */
for (i = 0; i < arg_file_count; ++i)
{
if (fullpathcmp(arg_files[i],
wp->w_buffer->b_ffname, TRUE) & FPC_SAME)
{
if (i < opened_len)
opened[i] = TRUE;
break;
}
}
}
wp->w_arg_idx = i;
if (i == arg_file_count) /* close this window */
{
if (p_hid || forceit || wp->w_buffer->b_nwindows > 1
|| !buf_changed(wp->w_buffer))
{
/* If the buffer was changed, and we would like to hide it,
* try autowriting. */
if (!p_hid && wp->w_buffer->b_nwindows <= 1
&& buf_changed(wp->w_buffer))
{
autowrite(wp->w_buffer, FALSE);
#ifdef AUTOCMD
/* check if autocommands removed the window */
if (!win_valid(wp))
{
wpnext = firstwin; /* start all over... */
continue;
}
#endif
}
if (firstwin == lastwin) /* can't close last window */
use_firstwin = TRUE;
else
{
close_window(wp, !p_hid && !buf_changed(wp->w_buffer));
#ifdef AUTOCMD
/* check if autocommands removed the next window */
if (!win_valid(wpnext))
wpnext = firstwin; /* start all over... */
#endif
}
}
}
}
/*
* Open a window for files in the argument list that don't have one.
* arg_file_count may change while doing this, because of autocommands.
*/
if (count > arg_file_count || count <= 0)
count = arg_file_count;
#ifdef AUTOCMD
/* Don't execute Win/Buf Enter/Leave autocommands here. */
++autocmd_no_enter;
++autocmd_no_leave;
#endif
win_enter(lastwin, FALSE);
for (i = 0; i < count && i < arg_file_count && !got_int; ++i)
{
if (i == arg_file_count - 1)
arg_had_last = TRUE;
if (i < opened_len && opened[i])
{
/* Move the already present window to below the current window */
if (curwin->w_arg_idx != i)
{
for (wpnext = firstwin; wpnext != NULL; wpnext = wpnext->w_next)
{
if (wpnext->w_arg_idx == i)
{
win_move_after(wpnext, curwin);
break;
}
}
}
}
else if (split_ret == OK)
{
if (!use_firstwin) /* split current window */
{
p_sb_save = p_sb;
p_ea_save = p_ea;
p_sb = TRUE; /* put windows in order of arglist */
p_ea = TRUE; /* use space from all windows */
split_ret = win_split(0, FALSE, TRUE);
p_sb = p_sb_save;
p_ea = p_ea_save;
if (split_ret == FAIL)
continue;
}
#ifdef AUTOCMD
else /* first window: do autocmd for leaving this buffer */
--autocmd_no_leave;
#endif
curwin->w_arg_idx = i;
/* edit file i */
(void)do_ecmd(0, arg_files[i], NULL, NULL, (linenr_t)1,
((p_hid || buf_changed(curwin->w_buffer)) ? ECMD_HIDE : 0)
+ ECMD_OLDBUF);
#ifdef AUTOCMD
if (use_firstwin)
++autocmd_no_leave;
#endif
use_firstwin = FALSE;
}
ui_breakcheck();
}
#ifdef AUTOCMD
--autocmd_no_enter;
#endif
win_enter(firstwin, FALSE); /* back to first window */
#ifdef AUTOCMD
--autocmd_no_leave;
#endif
}
/*
* do_buffer_all: Open a window for each buffer.
*
* 'count' is the maximum number of windows to open.
* When 'all' is TRUE, also load inactive buffers.
*/
void
do_buffer_all(count, all)
int count;
int all;
{
BUF *buf;
WIN *wp, *wpnext;
int split_ret = OK;
int p_sb_save;
int p_ea_save;
int open_wins = 0;
setpcmark();
#ifdef USE_GUI
need_mouse_correct = TRUE;
#endif
/*
* Close superfluous windows (two windows for the same buffer).
*/
for (wp = firstwin; wp != NULL; wp = wpnext)
{
wpnext = wp->w_next;
if (wp->w_buffer->b_nwindows > 1)
{
close_window(wp, FALSE);
#ifdef AUTOCMD
wpnext = firstwin; /* just in case an autocommand does
something strange with windows */
open_wins = 0;
#endif
}
else
++open_wins;
}
/*
* Go through the buffer list. When a buffer doesn't have a window yet,
* open one. Otherwise move the window to the right position.
* Watch out for autocommands that delete buffers or windows!
*/
#ifdef AUTOCMD
/* Don't execute Win/Buf Enter/Leave autocommands here. */
++autocmd_no_enter;
#endif
win_enter(lastwin, FALSE);
#ifdef AUTOCMD
++autocmd_no_leave;
#endif
for (buf = firstbuf; buf != NULL && open_wins < count; buf = buf->b_next)
{
/* Check if this buffer needs a window */
if (!all && buf->b_ml.ml_mfp == NULL)
continue;
/* Check if this buffer already has a window */
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer == buf)
break;
/* If the buffer already has a window, move it */
if (wp != NULL)
win_move_after(wp, curwin);
else if (split_ret == OK)
{
/* Split the window and put the buffer in it */
p_sb_save = p_sb;
p_ea_save = p_ea;
p_sb = TRUE; /* put windows in order of arglist */
p_ea = TRUE; /* use space from all windows */
split_ret = win_split(0, FALSE, TRUE);
++open_wins;
p_sb = p_sb_save;
p_ea = p_ea_save;
if (split_ret == FAIL)
continue;
(void)do_buffer(DOBUF_GOTO, DOBUF_FIRST, FORWARD,
(int)buf->b_fnum, 0);
#ifdef AUTOCMD
if (!buf_valid(buf)) /* autocommands deleted the buffer!!! */
break;
#endif
}
ui_breakcheck();
if (got_int)
{
(void)vgetc(); /* only break the file loading, not the rest */
break;
}
}
#ifdef AUTOCMD
--autocmd_no_enter;
#endif
win_enter(firstwin, FALSE); /* back to first window */
#ifdef AUTOCMD
--autocmd_no_leave;
#endif
/*
* Close superfluous windows.
*/
for (wp = lastwin; open_wins > count; )
{
if (p_hid || !buf_changed(wp->w_buffer)
|| autowrite(wp->w_buffer, FALSE) == OK)
{
close_window(wp, !p_hid);
--open_wins;
wp = lastwin;
}
else
{
wp = wp->w_prev;
if (wp == NULL)
break;
}
}
}
/*
* do_modelines() - process mode lines for the current file
*
* Returns immediately if the "ml" option isn't set.
*/
static int chk_modeline __ARGS((linenr_t));
void
do_modelines()
{
linenr_t lnum;
int nmlines;
if (!curbuf->b_p_ml || (nmlines = (int)p_mls) == 0)
return;
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count && lnum <= nmlines;
++lnum)
if (chk_modeline(lnum) == FAIL)
nmlines = 0;
for (lnum = curbuf->b_ml.ml_line_count; lnum > 0 && lnum > nmlines &&
lnum > curbuf->b_ml.ml_line_count - nmlines; --lnum)
if (chk_modeline(lnum) == FAIL)
nmlines = 0;
}
/*
* chk_modeline() - check a single line for a mode string
* Return FAIL if an error encountered.
*/
static int
chk_modeline(lnum)
linenr_t lnum;
{
char_u *s;
char_u *e;
char_u *linecopy; /* local copy of any modeline found */
int prev;
int end;
int retval = OK;
char_u *save_sourcing_name;
prev = -1;
for (s = ml_get(lnum); *s != NUL; ++s)
{
if (prev == -1 || vim_isspace(prev))
{
if ((prev != -1 && STRNCMP(s, "ex:", (size_t)3) == 0) ||
STRNCMP(s, "vi:", (size_t)3) == 0 ||
STRNCMP(s, "vim:", (size_t)4) == 0)
break;
}
prev = *s;
}
if (*s)
{
do /* skip over "ex:", "vi:" or "vim:" */
++s;
while (s[-1] != ':');
s = linecopy = vim_strsave(s); /* copy the line, it will change */
if (linecopy == NULL)
return FAIL;
sourcing_lnum = lnum; /* prepare for emsg() */
save_sourcing_name = sourcing_name;
sourcing_name = (char_u *)"modelines";
end = FALSE;
while (end == FALSE)
{
s = skipwhite(s);
if (*s == NUL)
break;
/*
* Find end of set command: ':' or end of line.
*/
for (e = s; (*e != ':' || *(e - 1) == '\\') && *e != NUL; ++e)
;
if (*e == NUL)
end = TRUE;
/*
* If there is a "set" command, require a terminating ':' and
* ignore the stuff after the ':'.
* "vi:set opt opt opt: foo" -- foo not interpreted
* "vi:opt opt opt: foo" -- foo interpreted
*/
if (STRNCMP(s, "set ", (size_t)4) == 0)
{
if (*e != ':') /* no terminating ':'? */
break;
end = TRUE;
s += 4;
}
*e = NUL; /* truncate the set command */
if (do_set(s) == FAIL) /* stop if error found */
{
retval = FAIL;
break;
}
s = e + 1; /* advance to next part */
}
sourcing_lnum = 0;
sourcing_name = save_sourcing_name;
vim_free(linecopy);
}
return retval;
}
#ifdef VIMINFO
int
read_viminfo_bufferlist(line, fp, writing)
char_u *line;
FILE *fp;
int writing;
{
char_u *tab;
linenr_t lnum;
colnr_t col;
BUF *buf;
char_u *sfname;
/* don't read in if there are files on the command-line or if writing: */
if (!writing && arg_file_count == 0 && find_viminfo_parameter('%') != NULL)
{
tab = vim_strchr(line + 1, '\t');
lnum = 0;
col = 0;
if (tab != NULL)
{
*tab++ = '\0';
lnum = atol((char *)tab);
tab = vim_strchr(tab, '\t');
if (tab != NULL)
col = atoi((char *)tab + 1);
}
/* Expand "~/" in the file name at "line + 1" to a full path.
* Then try shortening it by comparing with the current directory */
expand_env(line + 1, NameBuff, MAXPATHL);
mch_dirname(IObuff, IOSIZE);
sfname = shorten_fname(NameBuff, IObuff);
if (sfname == NULL)
sfname = NameBuff;
buf = buflist_new(NameBuff, sfname, (linenr_t)0, FALSE);
if (buf != NULL) /* just in case... */
{
buf->b_last_cursor.lnum = lnum;
buf->b_last_cursor.col = col;
buflist_setfpos(buf, lnum, col);
}
}
return vim_fgets(line, LSIZE, fp);
}
void
write_viminfo_bufferlist(fp)
FILE *fp;
{
BUF *buf;
WIN *win;
if (find_viminfo_parameter('%') == NULL)
return;
for (win = firstwin; win != NULL; win = win->w_next)
set_last_cursor(win);
fprintf(fp, "\n# Buffer list:\n");
for (buf = firstbuf; buf != NULL ; buf = buf->b_next)
{
if (buf->b_fname == NULL || buf->b_help || removable(buf->b_ffname))
continue;
home_replace(NULL, buf->b_ffname, NameBuff, MAXPATHL, TRUE);
fprintf(fp, "%%%s\t%ld\t%d\n", NameBuff,
(long)buf->b_last_cursor.lnum,
buf->b_last_cursor.col);
}
}
#endif