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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.
*/
/*
* session.c: session related functions
*/
#include "vim.h"
#if defined(FEAT_SESSION) || defined(PROTO)
static int did_lcd; // whether ":lcd" was produced for a session
/*
* Write a file name to the session file.
* Takes care of the "slash" option in 'sessionoptions' and escapes special
* characters.
* Returns FAIL if writing fails or out of memory.
*/
static int
ses_put_fname(FILE *fd, char_u *name, unsigned *flagp)
{
char_u *sname;
char_u *p;
int retval = OK;
sname = home_replace_save(NULL, name);
if (sname == NULL)
return FAIL;
if (*flagp & SSOP_SLASH)
{
// change all backslashes to forward slashes
for (p = sname; *p != NUL; MB_PTR_ADV(p))
if (*p == '\\')
*p = '/';
}
// escape special characters
p = vim_strsave_fnameescape(sname, VSE_NONE);
vim_free(sname);
if (p == NULL)
return FAIL;
// write the result
if (fputs((char *)p, fd) < 0)
retval = FAIL;
vim_free(p);
return retval;
}
/*
* Write a buffer name to the session file.
* Also ends the line, if "add_eol" is TRUE.
* Returns FAIL if writing fails.
*/
static int
ses_fname(FILE *fd, buf_T *buf, unsigned *flagp, int add_eol)
{
char_u *name;
// Use the short file name if the current directory is known at the time
// the session file will be sourced.
// Don't do this for ":mkview", we don't know the current directory.
// Don't do this after ":lcd", we don't keep track of what the current
// directory is.
if (buf->b_sfname != NULL
&& flagp == &ssop_flags
&& (ssop_flags & (SSOP_CURDIR | SSOP_SESDIR))
#ifdef FEAT_AUTOCHDIR
&& !p_acd
#endif
&& !did_lcd)
name = buf->b_sfname;
else
name = buf->b_ffname;
if (ses_put_fname(fd, name, flagp) == FAIL
|| (add_eol && put_eol(fd) == FAIL))
return FAIL;
return OK;
}
/*
* Write an argument list to the session file.
* Returns FAIL if writing fails.
*/
static int
ses_arglist(
FILE *fd,
char *cmd,
garray_T *gap,
int fullname, // TRUE: use full path name
unsigned *flagp)
{
int i;
char_u *buf = NULL;
char_u *s;
if (fputs(cmd, fd) < 0 || put_eol(fd) == FAIL)
return FAIL;
if (put_line(fd, "%argdel") == FAIL)
return FAIL;
for (i = 0; i < gap->ga_len; ++i)
{
// NULL file names are skipped (only happens when out of memory).
s = alist_name(&((aentry_T *)gap->ga_data)[i]);
if (s != NULL)
{
if (fullname)
{
buf = alloc(MAXPATHL);
if (buf != NULL)
{
(void)vim_FullName(s, buf, MAXPATHL, FALSE);
s = buf;
}
}
if (fputs("$argadd ", fd) < 0
|| ses_put_fname(fd, s, flagp) == FAIL
|| put_eol(fd) == FAIL)
{
vim_free(buf);
return FAIL;
}
vim_free(buf);
}
}
return OK;
}
/*
* Return non-zero if window "wp" is to be stored in the Session.
*/
static int
ses_do_win(win_T *wp)
{
#ifdef FEAT_TERMINAL
if (bt_terminal(wp->w_buffer))
return !term_is_finished(wp->w_buffer)
&& (ssop_flags & SSOP_TERMINAL)
&& term_should_restore(wp->w_buffer);
#endif
if (wp->w_buffer->b_fname == NULL
// When 'buftype' is "nofile" can't restore the window contents.
|| bt_nofilename(wp->w_buffer))
return (ssop_flags & SSOP_BLANK);
if (bt_help(wp->w_buffer))
return (ssop_flags & SSOP_HELP);
return TRUE;
}
/*
* Return TRUE if frame "fr" has a window somewhere that we want to save in
* the Session.
*/
static int
ses_do_frame(frame_T *fr)
{
frame_T *frc;
if (fr->fr_layout == FR_LEAF)
return ses_do_win(fr->fr_win);
FOR_ALL_FRAMES(frc, fr->fr_child)
if (ses_do_frame(frc))
return TRUE;
return FALSE;
}
/*
* Skip frames that don't contain windows we want to save in the Session.
* Returns NULL when there none.
*/
static frame_T *
ses_skipframe(frame_T *fr)
{
frame_T *frc;
FOR_ALL_FRAMES(frc, fr)
if (ses_do_frame(frc))
break;
return frc;
}
/*
* Write commands to "fd" to recursively create windows for frame "fr",
* horizontally and vertically split.
* After the commands the last window in the frame is the current window.
* Returns FAIL when writing the commands to "fd" fails.
*/
static int
ses_win_rec(FILE *fd, frame_T *fr)
{
frame_T *frc;
int count = 0;
if (fr->fr_layout == FR_LEAF)
return OK;
// Find first frame that's not skipped and then create a window for
// each following one (first frame is already there).
frc = ses_skipframe(fr->fr_child);
if (frc != NULL)
while ((frc = ses_skipframe(frc->fr_next)) != NULL)
{
// Make window as big as possible so that we have lots of room
// to split.
if (put_line(fd, "wincmd _ | wincmd |") == FAIL
|| put_line(fd, fr->fr_layout == FR_COL
? "split" : "vsplit") == FAIL)
return FAIL;
++count;
}
// Go back to the first window.
if (count > 0 && (fprintf(fd, fr->fr_layout == FR_COL
? "%dwincmd k" : "%dwincmd h", count) < 0
|| put_eol(fd) == FAIL))
return FAIL;
// Recursively create frames/windows in each window of this column or
// row.
frc = ses_skipframe(fr->fr_child);
while (frc != NULL)
{
ses_win_rec(fd, frc);
frc = ses_skipframe(frc->fr_next);
// Go to next window.
if (frc != NULL && put_line(fd, "wincmd w") == FAIL)
return FAIL;
}
return OK;
}
static int
ses_winsizes(
FILE *fd,
int restore_size,
win_T *tab_firstwin)
{
int n = 0;
win_T *wp;
if (restore_size && (ssop_flags & SSOP_WINSIZE))
{
for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
{
if (!ses_do_win(wp))
continue;
++n;
// restore height when not full height
if (wp->w_height + wp->w_status_height < topframe->fr_height
&& (fprintf(fd,
"exe '%dresize ' . ((&lines * %ld + %ld) / %ld)",
n, (long)wp->w_height, Rows / 2, Rows) < 0
|| put_eol(fd) == FAIL))
return FAIL;
// restore width when not full width
if (wp->w_width < Columns && (fprintf(fd,
"exe 'vert %dresize ' . ((&columns * %ld + %ld) / %ld)",
n, (long)wp->w_width, Columns / 2, Columns) < 0
|| put_eol(fd) == FAIL))
return FAIL;
}
}
else
{
// Just equalise window sizes
if (put_line(fd, "wincmd =") == FAIL)
return FAIL;
}
return OK;
}
static int
put_view_curpos(FILE *fd, win_T *wp, char *spaces)
{
int r;
if (wp->w_curswant == MAXCOL)
r = fprintf(fd, "%snormal! $", spaces);
else
r = fprintf(fd, "%snormal! 0%d|", spaces, wp->w_virtcol + 1);
return r < 0 || put_eol(fd) == FAIL ? FALSE : OK;
}
/*
* Write commands to "fd" to restore the view of a window.
* Caller must make sure 'scrolloff' is zero.
*/
static int
put_view(
FILE *fd,
win_T *wp,
int add_edit, // add ":edit" command to view
unsigned *flagp, // vop_flags or ssop_flags
int current_arg_idx, // current argument index of the window,
// use -1 if unknown
hashtab_T *terminal_bufs UNUSED) // already encountered terminal buffers,
// can be NULL
{
win_T *save_curwin;
int f;
int do_cursor;
int did_next = FALSE;
// Always restore cursor position for ":mksession". For ":mkview" only
// when 'viewoptions' contains "cursor".
do_cursor = (flagp == &ssop_flags || *flagp & SSOP_CURSOR);
// Local argument list.
if (wp->w_alist == &global_alist)
{
if (put_line(fd, "argglobal") == FAIL)
return FAIL;
}
else
{
if (ses_arglist(fd, "arglocal", &wp->w_alist->al_ga,
flagp == &vop_flags
|| !(*flagp & SSOP_CURDIR)
|| wp->w_localdir != NULL, flagp) == FAIL)
return FAIL;
}
// Only when part of a session: restore the argument index. Some
// arguments may have been deleted, check if the index is valid.
if (wp->w_arg_idx != current_arg_idx && wp->w_arg_idx < WARGCOUNT(wp)
&& flagp == &ssop_flags)
{
if (fprintf(fd, "%ldargu", (long)wp->w_arg_idx + 1) < 0
|| put_eol(fd) == FAIL)
return FAIL;
did_next = TRUE;
}
// Edit the file. Skip this when ":next" already did it.
if (add_edit && (!did_next || wp->w_arg_idx_invalid))
{
if (bt_help(wp->w_buffer))
{
char *curtag = "";
// A help buffer needs some options to be set.
// First, create a new empty buffer with "buftype=help".
// Then ":help" will re-use both the buffer and the window and set
// the options, even when "options" is not in 'sessionoptions'.
if (0 < wp->w_tagstackidx
&& wp->w_tagstackidx <= wp->w_tagstacklen)
curtag = (char *)wp->w_tagstack[wp->w_tagstackidx - 1].tagname;
if (put_line(fd, "enew | setl bt=help") == FAIL
|| fprintf(fd, "help %s", curtag) < 0
|| put_eol(fd) == FAIL)
return FAIL;
}
# ifdef FEAT_TERMINAL
else if (bt_terminal(wp->w_buffer))
{
if (term_write_session(fd, wp, terminal_bufs) == FAIL)
return FAIL;
}
# endif
// Load the file.
else if (wp->w_buffer->b_ffname != NULL
&& !bt_nofilename(wp->w_buffer))
{
// Editing a file in this buffer: use ":edit file".
// This may have side effects! (e.g., compressed or network file).
//
// Note, if a buffer for that file already exists, use :badd to
// edit that buffer, to not lose folding information (:edit resets
// folds in other buffers)
if (fputs("if bufexists(fnamemodify(\"", fd) < 0
|| ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
|| fputs("\", \":p\")) | buffer ", fd) < 0
|| ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
|| fputs(" | else | edit ", fd) < 0
|| ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
|| fputs(" | endif", fd) < 0
|| put_eol(fd) == FAIL)
return FAIL;
}
else
{
// No file in this buffer, just make it empty.
if (put_line(fd, "enew") == FAIL)
return FAIL;
#ifdef FEAT_QUICKFIX
if (wp->w_buffer->b_ffname != NULL)
{
// The buffer does have a name, but it's not a file name.
if (fputs("file ", fd) < 0
|| ses_fname(fd, wp->w_buffer, flagp, TRUE) == FAIL)
return FAIL;
}
#endif
do_cursor = FALSE;
}
}
if (wp->w_alt_fnum)
{
buf_T *alt = buflist_findnr(wp->w_alt_fnum);
// Set the alternate file if the buffer is listed.
if ((flagp == &ssop_flags)
&& alt != NULL
&& alt->b_fname != NULL
&& *alt->b_fname != NUL
&& alt->b_p_bl
&& (fputs("balt ", fd) < 0
|| ses_fname(fd, alt, flagp, TRUE) == FAIL))
return FAIL;
}
// Local mappings and abbreviations.
if ((*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
&& makemap(fd, wp->w_buffer) == FAIL)
return FAIL;
// Local options. Need to go to the window temporarily.
// Store only local values when using ":mkview" and when ":mksession" is
// used and 'sessionoptions' doesn't include "options".
// Some folding options are always stored when "folds" is included,
// otherwise the folds would not be restored correctly.
save_curwin = curwin;
curwin = wp;
curbuf = curwin->w_buffer;
if (*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
f = makeset(fd, OPT_LOCAL,
flagp == &vop_flags || !(*flagp & SSOP_OPTIONS));
#ifdef FEAT_FOLDING
else if (*flagp & SSOP_FOLDS)
f = makefoldset(fd);
#endif
else
f = OK;
curwin = save_curwin;
curbuf = curwin->w_buffer;
if (f == FAIL)
return FAIL;
#ifdef FEAT_FOLDING
// Save Folds when 'buftype' is empty and for help files.
if ((*flagp & SSOP_FOLDS)
&& wp->w_buffer->b_ffname != NULL
&& (bt_normal(wp->w_buffer) || bt_help(wp->w_buffer)))
{
if (put_folds(fd, wp) == FAIL)
return FAIL;
}
#endif
// Set the cursor after creating folds, since that moves the cursor.
if (do_cursor)
{
// Restore the cursor line in the file and relatively in the
// window. Don't use "G", it changes the jumplist.
if (wp->w_height <= 0)
{
if (fprintf(fd, "let s:l = %ld", (long)wp->w_cursor.lnum) < 0)
return FAIL;
}
else if (fprintf(fd,
"let s:l = %ld - ((%ld * winheight(0) + %ld) / %ld)",
(long)wp->w_cursor.lnum,
(long)(wp->w_cursor.lnum - wp->w_topline),
(long)wp->w_height / 2, (long)wp->w_height) < 0)
return FAIL;
if (put_eol(fd) == FAIL
|| put_line(fd, "if s:l < 1 | let s:l = 1 | endif") == FAIL
|| put_line(fd, "keepjumps exe s:l") == FAIL
|| put_line(fd, "normal! zt") == FAIL
|| fprintf(fd, "keepjumps %ld", (long)wp->w_cursor.lnum) < 0
|| put_eol(fd) == FAIL)
return FAIL;
// Restore the cursor column and left offset when not wrapping.
if (wp->w_cursor.col == 0)
{
if (put_line(fd, "normal! 0") == FAIL)
return FAIL;
}
else
{
if (!wp->w_p_wrap && wp->w_leftcol > 0 && wp->w_width > 0)
{
if (fprintf(fd,
"let s:c = %ld - ((%ld * winwidth(0) + %ld) / %ld)",
(long)wp->w_virtcol + 1,
(long)(wp->w_virtcol - wp->w_leftcol),
(long)wp->w_width / 2, (long)wp->w_width) < 0
|| put_eol(fd) == FAIL
|| put_line(fd, "if s:c > 0") == FAIL
|| fprintf(fd,
" exe 'normal! ' . s:c . '|zs' . %ld . '|'",
(long)wp->w_virtcol + 1) < 0
|| put_eol(fd) == FAIL
|| put_line(fd, "else") == FAIL
|| put_view_curpos(fd, wp, " ") == FAIL
|| put_line(fd, "endif") == FAIL)
return FAIL;
}
else if (put_view_curpos(fd, wp, "") == FAIL)
return FAIL;
}
}
// Local directory, if the current flag is not view options or the "curdir"
// option is included.
if (wp->w_localdir != NULL
&& (flagp != &vop_flags || (*flagp & SSOP_CURDIR)))
{
if (fputs("lcd ", fd) < 0
|| ses_put_fname(fd, wp->w_localdir, flagp) == FAIL
|| put_eol(fd) == FAIL)
return FAIL;
did_lcd = TRUE;
}
return OK;
}
#ifdef FEAT_EVAL
static int
store_session_globals(FILE *fd)
{
hashtab_T *gvht = get_globvar_ht();
hashitem_T *hi;
dictitem_T *this_var;
int todo;
char_u *p, *t;
todo = (int)gvht->ht_used;
for (hi = gvht->ht_array; todo > 0; ++hi)
{
if (!HASHITEM_EMPTY(hi))
{
--todo;
this_var = HI2DI(hi);
if ((this_var->di_tv.v_type == VAR_NUMBER
|| this_var->di_tv.v_type == VAR_STRING)
&& var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION)
{
// Escape special characters with a backslash. Turn a LF and
// CR into \n and \r.
p = vim_strsave_escaped(tv_get_string(&this_var->di_tv),
(char_u *)"\\\"\n\r");
if (p == NULL) // out of memory
break;
for (t = p; *t != NUL; ++t)
if (*t == '\n')
*t = 'n';
else if (*t == '\r')
*t = 'r';
if ((fprintf(fd, "let %s = %c%s%c",
this_var->di_key,
(this_var->di_tv.v_type == VAR_STRING) ? '"'
: ' ',
p,
(this_var->di_tv.v_type == VAR_STRING) ? '"'
: ' ') < 0)
|| put_eol(fd) == FAIL)
{
vim_free(p);
return FAIL;
}
vim_free(p);
}
else if (this_var->di_tv.v_type == VAR_FLOAT
&& var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION)
{
float_T f = this_var->di_tv.vval.v_float;
int sign = ' ';
if (f < 0)
{
f = -f;
sign = '-';
}
if ((fprintf(fd, "let %s = %c%f",
this_var->di_key, sign, f) < 0)
|| put_eol(fd) == FAIL)
return FAIL;
}
}
}
return OK;
}
#endif
/*
* Write openfile commands for the current buffers to an .exrc file.
* Return FAIL on error, OK otherwise.
*/
static int
makeopens(
FILE *fd,
char_u *dirnow) // Current directory name
{
buf_T *buf;
int only_save_windows = TRUE;
int nr;
int restore_size = TRUE;
int restore_height_width = FALSE;
win_T *wp;
char_u *sname;
win_T *edited_win = NULL;
int restore_stal = FALSE;
win_T *tab_firstwin;
frame_T *tab_topframe;
int cur_arg_idx = 0;
int next_arg_idx = 0;
int ret = FAIL;
tabpage_T *tp;
#ifdef FEAT_TERMINAL
hashtab_T terminal_bufs;
hash_init(&terminal_bufs);
#endif
if (ssop_flags & SSOP_BUFFERS)
only_save_windows = FALSE; // Save ALL buffers
// Begin by setting the this_session variable, and then other
// sessionable variables.
#ifdef FEAT_EVAL
if (put_line(fd, "let v:this_session=expand(\"<sfile>:p\")") == FAIL)
goto fail;
if (ssop_flags & SSOP_GLOBALS)
if (store_session_globals(fd) == FAIL)
goto fail;
#endif
// Close all windows and tabs but one.
if (put_line(fd, "silent only") == FAIL)
goto fail;
if ((ssop_flags & SSOP_TABPAGES)
&& put_line(fd, "silent tabonly") == FAIL)
goto fail;
// Now a :cd command to the session directory or the current directory
if (ssop_flags & SSOP_SESDIR)
{
if (put_line(fd, "exe \"cd \" . escape(expand(\"<sfile>:p:h\"), ' ')")
== FAIL)
goto fail;
}
else if (ssop_flags & SSOP_CURDIR)
{
sname = home_replace_save(NULL, globaldir != NULL ? globaldir : dirnow);
if (sname == NULL
|| fputs("cd ", fd) < 0
|| ses_put_fname(fd, sname, &ssop_flags) == FAIL
|| put_eol(fd) == FAIL)
{
vim_free(sname);
goto fail;
}
vim_free(sname);
}
// If there is an empty, unnamed buffer we will wipe it out later.
// Remember the buffer number.
if (put_line(fd, "if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''") == FAIL)
goto fail;
if (put_line(fd, " let s:wipebuf = bufnr('%')") == FAIL)
goto fail;
if (put_line(fd, "endif") == FAIL)
goto fail;
// save 'shortmess' if not storing options
if ((ssop_flags & SSOP_OPTIONS) == 0
&& put_line(fd, "let s:shortmess_save = &shortmess") == FAIL)
goto fail;
// set 'shortmess' for the following. Add the 'A' flag if it was there
if (put_line(fd, "if &shortmess =~ 'A'") == FAIL
|| put_line(fd, " set shortmess=aoOA") == FAIL
|| put_line(fd, "else") == FAIL
|| put_line(fd, " set shortmess=aoO") == FAIL
|| put_line(fd, "endif") == FAIL)
goto fail;
// Now save the current files, current buffer first.
// Put all buffers into the buffer list.
// Do it very early to preserve buffer order after loading session (which
// can be disrupted by prior `edit` or `tabedit` calls).
FOR_ALL_BUFFERS(buf)
{
if (!(only_save_windows && buf->b_nwindows == 0)
&& !(buf->b_help && !(ssop_flags & SSOP_HELP))
// Skip terminal buffers: finished ones are not useful, others
// will be resurrected and result in a new buffer.
&& !bt_terminal(buf)
&& buf->b_fname != NULL
&& buf->b_p_bl)
{
if (fprintf(fd, "badd +%ld ", buf->b_wininfo == NULL ? 1L
: buf->b_wininfo->wi_fpos.lnum) < 0
|| ses_fname(fd, buf, &ssop_flags, TRUE) == FAIL)
goto fail;
}
}
// the global argument list
if (ses_arglist(fd, "argglobal", &global_alist.al_ga,
!(ssop_flags & SSOP_CURDIR), &ssop_flags) == FAIL)
goto fail;
if (ssop_flags & SSOP_RESIZE)
{
// Note: after the restore we still check it worked!
if (fprintf(fd, "set lines=%ld columns=%ld" , Rows, Columns) < 0
|| put_eol(fd) == FAIL)
goto fail;
}
#ifdef FEAT_GUI
if (gui.in_use && (ssop_flags & SSOP_WINPOS))
{
int x, y;
if (gui_mch_get_winpos(&x, &y) == OK)
{
// Note: after the restore we still check it worked!
if (fprintf(fd, "winpos %d %d", x, y) < 0 || put_eol(fd) == FAIL)
goto fail;
}
}
#endif
// When there are two or more tabpages and 'showtabline' is 1 the tabline
// will be displayed when creating the next tab. That resizes the windows
// in the first tab, which may cause problems. Set 'showtabline' to 2
// temporarily to avoid that.
if (p_stal == 1 && first_tabpage->tp_next != NULL)
{
if (put_line(fd, "set stal=2") == FAIL)
goto fail;
restore_stal = TRUE;
}
if ((ssop_flags & SSOP_TABPAGES))
{
// "tabpages" is in 'sessionoptions': Similar to ses_win_rec() below,
// populate the tab pages first so later local options won't be copied
// to the new tabs.
FOR_ALL_TABPAGES(tp)
// Use `bufhidden=wipe` to remove empty "placeholder" buffers once
// they are not needed. This prevents creating extra buffers (see
// cause of patch 8.1.0829)
if (tp->tp_next != NULL
&& put_line(fd, "tabnew +setlocal\\ bufhidden=wipe") == FAIL)
goto fail;
if (first_tabpage->tp_next != NULL && put_line(fd, "tabrewind") == FAIL)
goto fail;
}
// Assume "tabpages" is in 'sessionoptions'. If not then we only do
// "curtab" and bail out of the loop.
FOR_ALL_TABPAGES(tp)
{
int need_tabnext = FALSE;
int cnr = 1;
// May repeat putting Windows for each tab, when "tabpages" is in
// 'sessionoptions'.
// Don't use goto_tabpage(), it may change directory and trigger
// autocommands.
if ((ssop_flags & SSOP_TABPAGES))
{
if (tp == curtab)
{
tab_firstwin = firstwin;
tab_topframe = topframe;
}
else
{
tab_firstwin = tp->tp_firstwin;
tab_topframe = tp->tp_topframe;
}
if (tp != first_tabpage)
need_tabnext = TRUE;
}
else
{
tp = curtab;
tab_firstwin = firstwin;
tab_topframe = topframe;
}
// Before creating the window layout, try loading one file. If this
// is aborted we don't end up with a number of useless windows.
// This may have side effects! (e.g., compressed or network file).
for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
{
if (ses_do_win(wp)
&& wp->w_buffer->b_ffname != NULL
&& !bt_help(wp->w_buffer)
&& !bt_nofilename(wp->w_buffer))
{
if (need_tabnext && put_line(fd, "tabnext") == FAIL)
goto fail;
need_tabnext = FALSE;
if (fputs("edit ", fd) < 0
|| ses_fname(fd, wp->w_buffer, &ssop_flags, TRUE)
== FAIL)
goto fail;
if (!wp->w_arg_idx_invalid)
edited_win = wp;
break;
}
}
// If no file got edited create an empty tab page.
if (need_tabnext && put_line(fd, "tabnext") == FAIL)
goto fail;
if (tab_topframe->fr_layout != FR_LEAF)
{
// Save current window layout.
if (put_line(fd, "let s:save_splitbelow = &splitbelow") == FAIL
|| put_line(fd, "let s:save_splitright = &splitright")
== FAIL)
goto fail;
if (put_line(fd, "set splitbelow splitright") == FAIL)
goto fail;
if (ses_win_rec(fd, tab_topframe) == FAIL)
goto fail;
if (put_line(fd, "let &splitbelow = s:save_splitbelow") == FAIL
|| put_line(fd, "let &splitright = s:save_splitright")
== FAIL)
goto fail;
}
// Check if window sizes can be restored (no windows omitted).
// Remember the window number of the current window after restoring.
nr = 0;
for (wp = tab_firstwin; wp != NULL; wp = W_NEXT(wp))
{
if (ses_do_win(wp))
++nr;
else
restore_size = FALSE;
if (curwin == wp)
cnr = nr;
}
if (tab_firstwin->w_next != NULL)
{
// Go to the first window.
if (put_line(fd, "wincmd t") == FAIL)
goto fail;
// If more than one window, see if sizes can be restored.
// First set 'winheight' and 'winwidth' to 1 to avoid the windows
// being resized when moving between windows.
// Do this before restoring the view, so that the topline and the
// cursor can be set. This is done again below.
// winminheight and winminwidth need to be set to avoid an error if
// the user has set winheight or winwidth.
if (put_line(fd, "let s:save_winminheight = &winminheight") == FAIL
|| put_line(fd, "let s:save_winminwidth = &winminwidth")
== FAIL)
goto fail;
if (put_line(fd, "set winminheight=0") == FAIL
|| put_line(fd, "set winheight=1") == FAIL
|| put_line(fd, "set winminwidth=0") == FAIL
|| put_line(fd, "set winwidth=1") == FAIL)
goto fail;
restore_height_width = TRUE;
}
if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
goto fail;
// Restore the tab-local working directory if specified
// Do this before the windows, so that the window-local directory can
// override the tab-local directory.
if ((ssop_flags & SSOP_CURDIR) && tp->tp_localdir != NULL)
{
if (fputs("tcd ", fd) < 0
|| ses_put_fname(fd, tp->tp_localdir, &ssop_flags) == FAIL
|| put_eol(fd) == FAIL)
goto fail;
did_lcd = TRUE;
}
// Restore the view of the window (options, file, cursor, etc.).
for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
{
if (!ses_do_win(wp))
continue;
if (put_view(fd, wp, wp != edited_win, &ssop_flags, cur_arg_idx,
#ifdef FEAT_TERMINAL
&terminal_bufs
#else
NULL
#endif
) == FAIL)
goto fail;
if (nr > 1 && put_line(fd, "wincmd w") == FAIL)
goto fail;
next_arg_idx = wp->w_arg_idx;
}
// The argument index in the first tab page is zero, need to set it in
// each window. For further tab pages it's the window where we do
// "tabedit".
cur_arg_idx = next_arg_idx;
// Restore cursor to the current window if it's not the first one.
if (cnr > 1 && (fprintf(fd, "%dwincmd w", cnr) < 0
|| put_eol(fd) == FAIL))
goto fail;
// Restore window sizes again after jumping around in windows, because
// the current window has a minimum size while others may not.
if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
goto fail;
// Don't continue in another tab page when doing only the current one
// or when at the last tab page.
if (!(ssop_flags & SSOP_TABPAGES))
break;
}
if (ssop_flags & SSOP_TABPAGES)
{
if (fprintf(fd, "tabnext %d", tabpage_index(curtab)) < 0
|| put_eol(fd) == FAIL)
goto fail;
}
if (restore_stal && put_line(fd, "set stal=1") == FAIL)
goto fail;
// Wipe out an empty unnamed buffer we started in.
if (put_line(fd, "if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0")
== FAIL)
goto fail;
if (put_line(fd, " silent exe 'bwipe ' . s:wipebuf") == FAIL)
goto fail;
if (put_line(fd, "endif") == FAIL)
goto fail;
if (put_line(fd, "unlet! s:wipebuf") == FAIL)
goto fail;
// Re-apply 'winheight' and 'winwidth'.
if (fprintf(fd, "set winheight=%ld winwidth=%ld",
p_wh, p_wiw) < 0 || put_eol(fd) == FAIL)
goto fail;
// Restore 'shortmess'.
if (ssop_flags & SSOP_OPTIONS)
{
if (fprintf(fd, "set shortmess=%s", p_shm) < 0 || put_eol(fd) == FAIL)
goto fail;
}
else
{
if (put_line(fd, "let &shortmess = s:shortmess_save") == FAIL)
goto fail;
}
if (restore_height_width)
{
// Restore 'winminheight' and 'winminwidth'.
if (put_line(fd, "let &winminheight = s:save_winminheight") == FAIL
|| put_line(fd, "let &winminwidth = s:save_winminwidth") == FAIL)
goto fail;
}
// Lastly, execute the x.vim file if it exists.
if (put_line(fd, "let s:sx = expand(\"<sfile>:p:r\").\"x.vim\"") == FAIL
|| put_line(fd, "if filereadable(s:sx)") == FAIL
|| put_line(fd, " exe \"source \" . fnameescape(s:sx)") == FAIL
|| put_line(fd, "endif") == FAIL)
goto fail;
ret = OK;
fail:
#ifdef FEAT_TERMINAL
hash_clear_all(&terminal_bufs, 0);
#endif
return ret;
}
/*
* Get the name of the view file for the current buffer.
*/
static char_u *
get_view_file(int c)
{
int len = 0;
char_u *p, *s;
char_u *retval;
char_u *sname;
if (curbuf->b_ffname == NULL)
{
emsg(_(e_no_file_name));
return NULL;
}
sname = home_replace_save(NULL, curbuf->b_ffname);
if (sname == NULL)
return NULL;
// We want a file name without separators, because we're not going to make
// a directory.
// "normal" path separator -> "=+"
// "=" -> "=="
// ":" path separator -> "=-"
for (p = sname; *p; ++p)
if (*p == '=' || vim_ispathsep(*p))
++len;
retval = alloc(STRLEN(sname) + len + STRLEN(p_vdir) + 9);
if (retval != NULL)
{
STRCPY(retval, p_vdir);
add_pathsep(retval);
s = retval + STRLEN(retval);
for (p = sname; *p; ++p)
{
if (*p == '=')
{
*s++ = '=';
*s++ = '=';
}
else if (vim_ispathsep(*p))
{
*s++ = '=';
#if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) || defined(VMS)
if (*p == ':')
*s++ = '-';
else
#endif
*s++ = '+';
}
else
*s++ = *p;
}
*s++ = '=';
*s++ = c;
STRCPY(s, ".vim");
}
vim_free(sname);
return retval;
}
/*
* ":loadview [nr]"
*/
void
ex_loadview(exarg_T *eap)
{
char_u *fname;
fname = get_view_file(*eap->arg);
if (fname == NULL)
return;
do_source(fname, FALSE, DOSO_NONE, NULL);
vim_free(fname);
}
# if defined(FEAT_GUI_GNOME) \
|| (defined(GUI_MAY_SPAWN) && defined(EXPERIMENTAL_GUI_CMD)) \
|| defined(PROTO)
/*
* Generate a script that can be used to restore the current editing session.
* Save the value of v:this_session before running :mksession in order to make
* automagic session save fully transparent. Return TRUE on success.
*/
int
write_session_file(char_u *filename)
{
char_u *escaped_filename;
char *mksession_cmdline;
unsigned int save_ssop_flags;
int failed;
// Build an ex command line to create a script that restores the current
// session if executed. Escape the filename to avoid nasty surprises.
escaped_filename = vim_strsave_escaped(filename, escape_chars);
if (escaped_filename == NULL)
return FALSE;
mksession_cmdline = alloc(10 + (int)STRLEN(escaped_filename) + 1);
if (mksession_cmdline == NULL)
{
vim_free(escaped_filename);
return FALSE;
}
strcpy(mksession_cmdline, "mksession ");
STRCAT(mksession_cmdline, escaped_filename);
vim_free(escaped_filename);
// Use a reasonable hardcoded set of 'sessionoptions' flags to avoid
// unpredictable effects when the session is saved automatically. Also,
// we definitely need SSOP_GLOBALS to be able to restore v:this_session.
// Don't use SSOP_BUFFERS to prevent the buffer list from becoming
// enormously large if the GNOME session feature is used regularly.
save_ssop_flags = ssop_flags;
ssop_flags = (SSOP_BLANK|SSOP_CURDIR|SSOP_FOLDS|SSOP_GLOBALS
|SSOP_HELP|SSOP_OPTIONS|SSOP_WINSIZE|SSOP_TABPAGES);
do_cmdline_cmd((char_u *)"let Save_VV_this_session = v:this_session");
failed = (do_cmdline_cmd((char_u *)mksession_cmdline) == FAIL);
do_cmdline_cmd((char_u *)"let v:this_session = Save_VV_this_session");
do_unlet((char_u *)"Save_VV_this_session", TRUE);
ssop_flags = save_ssop_flags;
vim_free(mksession_cmdline);
// Reopen the file and append a command to restore v:this_session,
// as if this save never happened. This is to avoid conflicts with
// the user's own sessions. FIXME: It's probably less hackish to add
// a "stealth" flag to 'sessionoptions' -- gotta ask Bram.
if (!failed)
{
FILE *fd;
fd = open_exfile(filename, TRUE, APPENDBIN);
failed = (fd == NULL
|| put_line(fd, "let v:this_session = Save_VV_this_session")
== FAIL
|| put_line(fd, "unlet Save_VV_this_session") == FAIL);
if (fd != NULL && fclose(fd) != 0)
failed = TRUE;
if (failed)
mch_remove(filename);
}
return !failed;
}
# endif
#endif // FEAT_SESSION
#if defined(FEAT_SESSION) && defined(USE_CRNL)
# define MKSESSION_NL
static int mksession_nl = FALSE; // use NL only in put_eol()
#endif
/*
* ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
*/
void
ex_mkrc(exarg_T *eap)
{
FILE *fd;
int failed = FALSE;
char_u *fname;
#ifdef FEAT_BROWSE
char_u *browseFile = NULL;
#endif
#ifdef FEAT_SESSION
int view_session = FALSE;
int using_vdir = FALSE; // using 'viewdir'?
char_u *viewFile = NULL;
unsigned *flagp;
#endif
if (eap->cmdidx == CMD_mksession || eap->cmdidx == CMD_mkview)
{
#ifdef FEAT_SESSION
view_session = TRUE;
#else
ex_ni(eap);
return;
#endif
}
#ifdef FEAT_SESSION
// Use the short file name until ":lcd" is used. We also don't use the
// short file name when 'acd' is set, that is checked later.
did_lcd = FALSE;
// ":mkview" or ":mkview 9": generate file name with 'viewdir'
if (eap->cmdidx == CMD_mkview
&& (*eap->arg == NUL
|| (vim_isdigit(*eap->arg) && eap->arg[1] == NUL)))
{
eap->forceit = TRUE;
fname = get_view_file(*eap->arg);
if (fname == NULL)
return;
viewFile = fname;
using_vdir = TRUE;
}
else
#endif
if (*eap->arg != NUL)
fname = eap->arg;
else if (eap->cmdidx == CMD_mkvimrc)
fname = (char_u *)VIMRC_FILE;
#ifdef FEAT_SESSION
else if (eap->cmdidx == CMD_mksession)
fname = (char_u *)SESSION_FILE;
#endif
else
fname = (char_u *)EXRC_FILE;
#ifdef FEAT_BROWSE
if (cmdmod.cmod_flags & CMOD_BROWSE)
{
browseFile = do_browse(BROWSE_SAVE,
# ifdef FEAT_SESSION
eap->cmdidx == CMD_mkview ? (char_u *)_("Save View") :
eap->cmdidx == CMD_mksession ? (char_u *)_("Save Session") :
# endif
(char_u *)_("Save Setup"),
fname, (char_u *)"vim", NULL,
(char_u *)_(BROWSE_FILTER_MACROS), NULL);
if (browseFile == NULL)
goto theend;
fname = browseFile;
eap->forceit = TRUE; // since dialog already asked
}
#endif
#if defined(FEAT_SESSION) && defined(vim_mkdir)
// When using 'viewdir' may have to create the directory.
if (using_vdir && !mch_isdir(p_vdir))
vim_mkdir_emsg(p_vdir, 0755);
#endif
fd = open_exfile(fname, eap->forceit, WRITEBIN);
if (fd != NULL)
{
#ifdef FEAT_SESSION
if (eap->cmdidx == CMD_mkview)
flagp = &vop_flags;
else
flagp = &ssop_flags;
#endif
#ifdef MKSESSION_NL
// "unix" in 'sessionoptions': use NL line separator
if (view_session && (*flagp & SSOP_UNIX))
mksession_nl = TRUE;
#endif
// Write the version command for :mkvimrc
if (eap->cmdidx == CMD_mkvimrc)
(void)put_line(fd, "version 6.0");
#ifdef FEAT_SESSION
if (eap->cmdidx == CMD_mksession)
{
if (put_line(fd, "let SessionLoad = 1") == FAIL)
failed = TRUE;
}
if (eap->cmdidx != CMD_mkview)
#endif
{
// Write setting 'compatible' first, because it has side effects.
// For that same reason only do it when needed.
if (p_cp)
(void)put_line(fd, "if !&cp | set cp | endif");
else
(void)put_line(fd, "if &cp | set nocp | endif");
}
#ifdef FEAT_SESSION
if (!view_session
|| (eap->cmdidx == CMD_mksession
&& (*flagp & SSOP_OPTIONS)))
#endif
{
int flags = OPT_GLOBAL;
#ifdef FEAT_SESSION
if (eap->cmdidx == CMD_mksession && (*flagp & SSOP_SKIP_RTP))
flags |= OPT_SKIPRTP;
#endif
failed |= (makemap(fd, NULL) == FAIL
|| makeset(fd, flags, FALSE) == FAIL);
}
#ifdef FEAT_SESSION
if (!failed && view_session)
{
if (put_line(fd, "let s:so_save = &g:so | let s:siso_save = &g:siso | setg so=0 siso=0 | setl so=-1 siso=-1") == FAIL)
failed = TRUE;
if (eap->cmdidx == CMD_mksession)
{
char_u *dirnow; // current directory
dirnow = alloc(MAXPATHL);
if (dirnow == NULL)
failed = TRUE;
else
{
// Change to session file's dir.
if (mch_dirname(dirnow, MAXPATHL) == FAIL
|| mch_chdir((char *)dirnow) != 0)
*dirnow = NUL;
if (*dirnow != NUL && (ssop_flags & SSOP_SESDIR))
{
if (vim_chdirfile(fname, NULL) == OK)
shorten_fnames(TRUE);
}
else if (*dirnow != NUL
&& (ssop_flags & SSOP_CURDIR) && globaldir != NULL)
{
if (mch_chdir((char *)globaldir) == 0)
shorten_fnames(TRUE);
}
failed |= (makeopens(fd, dirnow) == FAIL);
// restore original dir
if (*dirnow != NUL && ((ssop_flags & SSOP_SESDIR)
|| ((ssop_flags & SSOP_CURDIR) && globaldir != NULL)))
{
if (mch_chdir((char *)dirnow) != 0)
emsg(_(e_cannot_go_back_to_previous_directory));
shorten_fnames(TRUE);
}
vim_free(dirnow);
}
}
else
{
failed |= (put_view(fd, curwin, !using_vdir, flagp, -1, NULL)
== FAIL);
}
if (put_line(fd, "let &g:so = s:so_save | let &g:siso = s:siso_save")
== FAIL)
failed = TRUE;
#ifdef FEAT_SEARCH_EXTRA
if (no_hlsearch && put_line(fd, "nohlsearch") == FAIL)
failed = TRUE;
#endif
if (put_line(fd, "doautoall SessionLoadPost") == FAIL)
failed = TRUE;
if (eap->cmdidx == CMD_mksession)
{
if (put_line(fd, "unlet SessionLoad") == FAIL)
failed = TRUE;
}
}
#endif
if (put_line(fd, "\" vim: set ft=vim :") == FAIL)
failed = TRUE;
failed |= fclose(fd);
if (failed)
emsg(_(e_error_while_writing));
#if defined(FEAT_SESSION)
else if (eap->cmdidx == CMD_mksession)
{
// successful session write - set this_session var
char_u *tbuf;
tbuf = alloc(MAXPATHL);
if (tbuf != NULL)
{
if (vim_FullName(fname, tbuf, MAXPATHL, FALSE) == OK)
set_vim_var_string(VV_THIS_SESSION, tbuf, -1);
vim_free(tbuf);
}
}
#endif
#ifdef MKSESSION_NL
mksession_nl = FALSE;
#endif
}
#ifdef FEAT_BROWSE
theend:
vim_free(browseFile);
#endif
#ifdef FEAT_SESSION
vim_free(viewFile);
#endif
}
#if (defined(FEAT_VIMINFO) || defined(FEAT_SESSION)) || defined(PROTO)
var_flavour_T
var_flavour(char_u *varname)
{
char_u *p = varname;
if (ASCII_ISUPPER(*p))
{
while (*(++p))
if (ASCII_ISLOWER(*p))
return VAR_FLAVOUR_SESSION;
return VAR_FLAVOUR_VIMINFO;
}
else
return VAR_FLAVOUR_DEFAULT;
}
#endif
/*
* Write end-of-line character(s) for ":mkexrc", ":mkvimrc" and ":mksession".
* Return FAIL for a write error.
*/
int
put_eol(FILE *fd)
{
if (
#ifdef USE_CRNL
(
# ifdef MKSESSION_NL
!mksession_nl &&
# endif
(putc('\r', fd) < 0)) ||
#endif
(putc('\n', fd) < 0))
return FAIL;
return OK;
}
/*
* Write a line to "fd".
* Return FAIL for a write error.
*/
int
put_line(FILE *fd, char *s)
{
if (fputs(s, fd) < 0 || put_eol(fd) == FAIL)
return FAIL;
return OK;
}
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