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neovim/src/nvim/buffer.c

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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
//
// 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 <stdbool.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#include "nvim/api/private/handle.h"
#include "nvim/api/private/helpers.h"
#include "nvim/api/vim.h"
#include "nvim/ascii.h"
#include "nvim/assert.h"
#include "nvim/channel.h"
#include "nvim/vim.h"
#include "nvim/buffer.h"
#include "nvim/change.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/diff.h"
#include "nvim/digraph.h"
#include "nvim/eval.h"
#include "nvim/ex_cmds2.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/ex_getln.h"
#include "nvim/fileio.h"
#include "nvim/file_search.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/hashtab.h"
#include "nvim/highlight.h"
#include "nvim/indent.h"
#include "nvim/indent_c.h"
#include "nvim/main.h"
#include "nvim/mark.h"
#include "nvim/extmark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/misc1.h"
#include "nvim/garray.h"
#include "nvim/move.h"
#include "nvim/option.h"
#include "nvim/os_unix.h"
#include "nvim/path.h"
#include "nvim/quickfix.h"
#include "nvim/regexp.h"
#include "nvim/screen.h"
#include "nvim/sign.h"
#include "nvim/spell.h"
#include "nvim/strings.h"
#include "nvim/syntax.h"
#include "nvim/ui.h"
#include "nvim/undo.h"
#include "nvim/version.h"
#include "nvim/window.h"
#include "nvim/shada.h"
#include "nvim/os/os.h"
#include "nvim/os/time.h"
#include "nvim/os/input.h"
#include "nvim/buffer_updates.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "buffer.c.generated.h"
#endif
static char *msg_loclist = N_("[Location List]");
static char *msg_qflist = N_("[Quickfix List]");
static char *e_auabort = N_("E855: Autocommands caused command to abort");
// Number of times free_buffer() was called.
static int buf_free_count = 0;
typedef enum {
kBffClearWinInfo = 1,
kBffInitChangedtick = 2,
} BufFreeFlags;
// Read data from buffer for retrying.
static int
read_buffer(
int read_stdin, // read file from stdin, otherwise fifo
exarg_T *eap, // for forced 'ff' and 'fenc' or NULL
int flags) // extra flags for readfile()
{
int retval = OK;
linenr_T line_count;
//
// Read from the buffer which the text is already filled in and append at
// the end. This makes it possible to retry when 'fileformat' or
// 'fileencoding' was guessed wrong.
//
line_count = curbuf->b_ml.ml_line_count;
retval = readfile(
read_stdin ? NULL : curbuf->b_ffname,
read_stdin ? NULL : curbuf->b_fname,
(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;
if (read_stdin) {
// 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, true);
}
apply_autocmds_retval(EVENT_STDINREADPOST, NULL, NULL, false,
curbuf, &retval);
}
return retval;
}
// Open current buffer, that is: open the memfile and read the file into
// memory.
// Return FAIL for failure, OK otherwise.
int open_buffer(
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;
bufref_T old_curbuf;
long old_tw = curbuf->b_p_tw;
int read_fifo = false;
/*
* 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);
curbuf = NULL;
FOR_ALL_BUFFERS(buf) {
if (buf->b_ml.ml_mfp != NULL) {
curbuf = buf;
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);
if (old_tw != curbuf->b_p_tw) {
check_colorcolumn(curwin);
}
return FAIL;
}
// The autocommands in readfile() may change the buffer, but only AFTER
// reading the file.
set_bufref(&old_curbuf, curbuf);
modified_was_set = false;
// mark cursor position as being invalid
curwin->w_valid = 0;
if (curbuf->b_ffname != NULL) {
int old_msg_silent = msg_silent;
#ifdef UNIX
int save_bin = curbuf->b_p_bin;
int perm;
perm = os_getperm((const char *)curbuf->b_ffname);
if (perm >= 0 && (0
# ifdef S_ISFIFO
|| S_ISFIFO(perm)
# endif
# ifdef S_ISSOCK
|| S_ISSOCK(perm)
# endif
# ifdef OPEN_CHR_FILES
|| (S_ISCHR(perm)
&& is_dev_fd_file(curbuf->b_ffname))
# endif
)
) {
read_fifo = true;
}
if (read_fifo) {
curbuf->b_p_bin = true;
}
#endif
if (shortmess(SHM_FILEINFO)) {
msg_silent = 1;
}
retval = readfile(curbuf->b_ffname, curbuf->b_fname,
(linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM, eap,
flags | READ_NEW | (read_fifo ? READ_FIFO : 0));
#ifdef UNIX
if (read_fifo) {
curbuf->b_p_bin = save_bin;
if (retval == OK) {
retval = read_buffer(false, eap, flags);
}
}
#endif
msg_silent = old_msg_silent;
// Help buffer is filtered.
if (bt_help(curbuf)) {
fix_help_buffer();
}
} else if (read_stdin) {
int save_bin = curbuf->b_p_bin;
/*
* 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) {
retval = read_buffer(true, eap, flags);
}
}
// if first time loading this buffer, init b_chartab[]
if (curbuf->b_flags & BF_NEVERLOADED) {
(void)buf_init_chartab(curbuf, false);
parse_cino(curbuf);
}
// 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 | nvim -R -".
// When interrupted and 'cpoptions' contains 'i' set changed flag.
if ((got_int && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
|| modified_was_set // ":set modified" used in autocmd
|| (aborting() && vim_strchr(p_cpo, CPO_INTMOD) != NULL)) {
changed();
} else if (retval != FAIL && !read_stdin && !read_fifo) {
unchanged(curbuf, false, true);
}
save_file_ff(curbuf); // keep this fileformat
// Set last_changedtick to avoid triggering a TextChanged autocommand right
// after it was added.
curbuf->b_last_changedtick = buf_get_changedtick(curbuf);
curbuf->b_last_changedtick_pum = buf_get_changedtick(curbuf);
// require "!" to overwrite the file, because it wasn't read completely
if (aborting()) {
curbuf->b_flags |= BF_READERR;
}
/* Need to update automatic folding. Do this before the autocommands,
* they may use the fold info. */
foldUpdateAll(curwin);
// need to set w_topline, unless some autocommand already did that.
if (!(curwin->w_valid & VALID_TOPLINE)) {
curwin->w_topline = 1;
curwin->w_topfill = 0;
}
apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, false, curbuf, &retval);
if (retval == FAIL) {
return FAIL;
}
/*
* The autocommands may have changed the current buffer. Apply the
* modelines to the correct buffer, if it still exists and is loaded.
*/
if (bufref_valid(&old_curbuf) && old_curbuf.br_buf->b_ml.ml_mfp != NULL) {
aco_save_T aco;
// Go to the buffer that was opened.
aucmd_prepbuf(&aco, old_curbuf.br_buf);
do_modelines(0);
curbuf->b_flags &= ~(BF_CHECK_RO | BF_NEVERLOADED);
apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, false, curbuf,
&retval);
// restore curwin/curbuf and a few other things
aucmd_restbuf(&aco);
}
return retval;
}
/// Store "buf" in "bufref" and set the free count.
///
/// @param bufref Reference to be used for the buffer.
/// @param buf The buffer to reference.
void set_bufref(bufref_T *bufref, buf_T *buf)
{
bufref->br_buf = buf;
bufref->br_fnum = buf == NULL ? 0 : buf->b_fnum;
bufref->br_buf_free_count = buf_free_count;
}
/// Return true if "bufref->br_buf" points to the same buffer as when
/// set_bufref() was called and it is a valid buffer.
/// Only goes through the buffer list if buf_free_count changed.
/// Also checks if b_fnum is still the same, a :bwipe followed by :new might get
/// the same allocated memory, but it's a different buffer.
///
/// @param bufref Buffer reference to check for.
bool bufref_valid(bufref_T *bufref)
{
return bufref->br_buf_free_count == buf_free_count
? true
: buf_valid(bufref->br_buf) && bufref->br_fnum == bufref->br_buf->b_fnum;
}
/// Check that "buf" points to a valid buffer in the buffer list.
///
/// Can be slow if there are many buffers, prefer using bufref_valid().
///
/// @param buf The buffer to check for.
bool buf_valid(buf_T *buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
if (buf == NULL) {
return false;
}
// Assume that we more often have a recent buffer,
// start with the last one.
for (buf_T *bp = lastbuf; bp != NULL; bp = bp->b_prev) {
if (bp == buf) {
return true;
}
}
return false;
}
/// Close the link to a buffer.
///
/// @param win If not NULL, set b_last_cursor.
/// @param buf
/// @param action Used when there is no longer a window for the buffer.
/// Possible values:
/// 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.
/// @param abort_if_last
/// If true, 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_T *win, buf_T *buf, int action, bool abort_if_last)
{
bool unload_buf = (action != 0);
bool del_buf = (action == DOBUF_DEL || action == DOBUF_WIPE);
bool wipe_buf = (action == DOBUF_WIPE);
bool is_curwin = (curwin != NULL && curwin->w_buffer == buf);
win_T *the_curwin = curwin;
tabpage_T *the_curtab = curtab;
// Force unloading or deleting when 'bufhidden' says so, but not for terminal
// buffers.
// The caller must take care of NOT deleting/freeing when 'bufhidden' is
// "hide" (otherwise we could never free or delete a buffer).
if (!buf->terminal) {
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;
}
if (buf->terminal && (unload_buf || del_buf || wipe_buf)) {
// terminal buffers can only be wiped
unload_buf = true;
del_buf = true;
wipe_buf = true;
}
// Disallow deleting the buffer when it is locked (already being closed or
// halfway a command that relies on it). Unloading is allowed.
if (buf->b_locked > 0 && (del_buf || wipe_buf)) {
EMSG(_("E937: Attempt to delete a buffer that is in use"));
return;
}
if (win != NULL // Avoid bogus clang warning.
&& win_valid_any_tab(win)) {
// 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);
}
bufref_T bufref;
set_bufref(&bufref, buf);
// When the buffer is no longer in a window, trigger BufWinLeave
if (buf->b_nwindows == 1) {
buf->b_locked++;
if (apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname, false,
buf) && !bufref_valid(&bufref)) {
// Autocommands deleted the buffer.
EMSG(_(e_auabort));
return;
}
buf->b_locked--;
if (abort_if_last && last_nonfloat(win)) {
// Autocommands made this the only window.
EMSG(_(e_auabort));
return;
}
// When the buffer becomes hidden, but is not unloaded, trigger
// BufHidden
if (!unload_buf) {
buf->b_locked++;
if (apply_autocmds(EVENT_BUFHIDDEN, buf->b_fname, buf->b_fname, false,
buf) && !bufref_valid(&bufref)) {
// Autocommands deleted the buffer.
EMSG(_(e_auabort));
return;
}
buf->b_locked--;
if (abort_if_last && last_nonfloat(win)) {
// Autocommands made this the only window.
EMSG(_(e_auabort));
return;
}
}
if (aborting()) { // autocmds may abort script processing
return;
}
}
// If the buffer was in curwin and the window has changed, go back to that
// window, if it still exists. This avoids that ":edit x" triggering a
// "tabnext" BufUnload autocmd leaves a window behind without a buffer.
if (is_curwin && curwin != the_curwin && win_valid_any_tab(the_curwin)) {
block_autocmds();
goto_tabpage_win(the_curtab, the_curwin);
unblock_autocmds();
}
int nwindows = buf->b_nwindows;
// decrease the link count from windows (unless not in any window)
if (buf->b_nwindows > 0) {
buf->b_nwindows--;
}
if (diffopt_hiddenoff() && !unload_buf && buf->b_nwindows == 0) {
diff_buf_delete(buf); // Clear 'diff' for hidden buffer.
}
/* Return when a window is displaying the buffer or when it's not
* unloaded. */
if (buf->b_nwindows > 0 || !unload_buf) {
return;
}
if (buf->terminal) {
terminal_close(buf->terminal, NULL);
}
// 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.
*/
/* Remember if we are closing the current buffer. Restore the number of
* windows, so that autocommands in buf_freeall() don't get confused. */
bool is_curbuf = (buf == curbuf);
// When closing the current buffer stop Visual mode before freeing
// anything.
if (is_curbuf && VIsual_active
#if defined(EXITFREE)
&& !entered_free_all_mem
#endif
) {
end_visual_mode();
}
buf->b_nwindows = nwindows;
buf_freeall(buf, (del_buf ? BFA_DEL : 0) + (wipe_buf ? BFA_WIPE : 0));
if (!bufref_valid(&bufref)) {
// Autocommands may have deleted the buffer.
return;
}
if (aborting()) {
// Autocmds may abort script processing.
return;
}
/*
* 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;
}
if (win != NULL // Avoid bogus clang warning.
&& win_valid_any_tab(win)
&& win->w_buffer == buf) {
win->w_buffer = NULL; // make sure we don't use the buffer now
}
// 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--;
}
// Change directories when the 'acd' option is set.
do_autochdir();
// Disable buffer-updates for the current buffer.
// No need to check `unload_buf`: in that case the function returned above.
buf_updates_unregister_all(buf);
/*
* Remove the buffer from the list.
*/
if (wipe_buf) {
xfree(buf->b_ffname);
xfree(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, kBffClearWinInfo | kBffInitChangedtick);
// 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_T *buf)
{
buf->b_ml.ml_line_count = 1;
unchanged(buf, true, true);
buf->b_p_eol = true;
buf->b_start_eol = true;
buf->b_p_bomb = false;
buf->b_start_bomb = false;
buf->b_ml.ml_mfp = NULL;
buf->b_ml.ml_flags = ML_EMPTY; // empty buffer
}
/// Clears the current buffer contents.
void buf_clear(void)
{
linenr_T line_count = curbuf->b_ml.ml_line_count;
while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) {
ml_delete((linenr_T)1, false);
}
deleted_lines_mark(1, line_count); // prepare for display
ml_close(curbuf, true); // free memline_T
buf_clear_file(curbuf);
}
/// buf_freeall() - free all things allocated for a buffer that are related to
/// the file. Careful: get here with "curwin" NULL when exiting.
///
/// @param 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_T *buf, int flags)
{
bool is_curbuf = (buf == curbuf);
int is_curwin = (curwin != NULL && curwin->w_buffer == buf);
win_T *the_curwin = curwin;
tabpage_T *the_curtab = curtab;
// Make sure the buffer isn't closed by autocommands.
buf->b_locked++;
bufref_T bufref;
set_bufref(&bufref, buf);
if ((buf->b_ml.ml_mfp != NULL)
&& apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, false, buf)
&& !bufref_valid(&bufref)) {
// Autocommands deleted the buffer.
return;
}
if ((flags & BFA_DEL)
&& buf->b_p_bl
&& apply_autocmds(EVENT_BUFDELETE, buf->b_fname, buf->b_fname, false, buf)
&& !bufref_valid(&bufref)) {
// Autocommands may delete the buffer.
return;
}
if ((flags & BFA_WIPE)
&& apply_autocmds(EVENT_BUFWIPEOUT, buf->b_fname, buf->b_fname, false,
buf)
&& !bufref_valid(&bufref)) {
// Autocommands may delete the buffer.
return;
}
buf->b_locked--;
// If the buffer was in curwin and the window has changed, go back to that
// window, if it still exists. This avoids that ":edit x" triggering a
// "tabnext" BufUnload autocmd leaves a window behind without a buffer.
if (is_curwin && curwin != the_curwin && win_valid_any_tab(the_curwin)) {
block_autocmds();
goto_tabpage_win(the_curtab, the_curwin);
unblock_autocmds();
}
if (aborting()) { // autocmds may abort script processing
return;
}
/*
* 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;
}
diff_buf_delete(buf); // Can't use 'diff' for unloaded buffer.
// Remove any ownsyntax, unless exiting.
if (curwin != NULL && curwin->w_buffer == buf) {
reset_synblock(curwin);
}
// No folds in an empty buffer.
FOR_ALL_TAB_WINDOWS(tp, win) {
if (win->w_buffer == buf) {
clearFolding(win);
}
}
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
}
syntax_clear(&buf->b_s); // reset syntax info
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_T *buf)
{
handle_unregister_buffer(buf);
buf_free_count++;
// b:changedtick uses an item in buf_T.
free_buffer_stuff(buf, kBffClearWinInfo);
if (buf->b_vars->dv_refcount > DO_NOT_FREE_CNT) {
tv_dict_add(buf->b_vars,
tv_dict_item_copy((dictitem_T *)(&buf->changedtick_di)));
}
unref_var_dict(buf->b_vars);
aubuflocal_remove(buf);
tv_dict_unref(buf->additional_data);
xfree(buf->b_prompt_text);
callback_free(&buf->b_prompt_callback);
callback_free(&buf->b_prompt_interrupt);
clear_fmark(&buf->b_last_cursor);
clear_fmark(&buf->b_last_insert);
clear_fmark(&buf->b_last_change);
for (size_t i = 0; i < NMARKS; i++) {
free_fmark(buf->b_namedm[i]);
}
for (int i = 0; i < buf->b_changelistlen; i++) {
free_fmark(buf->b_changelist[i]);
}
if (autocmd_busy) {
// Do not free the buffer structure while autocommands are executing,
// it's still needed. Free it when autocmd_busy is reset.
memset(&buf->b_namedm[0], 0, sizeof(buf->b_namedm));
memset(&buf->b_changelist[0], 0, sizeof(buf->b_changelist));
buf->b_next = au_pending_free_buf;
au_pending_free_buf = buf;
} else {
xfree(buf);
}
}
/// Free stuff in the buffer for ":bdel" and when wiping out the buffer.
///
/// @param buf Buffer pointer
/// @param free_flags BufFreeFlags
static void free_buffer_stuff(buf_T *buf, int free_flags)
{
if (free_flags & kBffClearWinInfo) {
clear_wininfo(buf); // including window-local options
free_buf_options(buf, true);
ga_clear(&buf->b_s.b_langp);
}
{
// Avoid losing b:changedtick when deleting buffer: clearing variables
// implies using clear_tv() on b:changedtick and that sets changedtick to
// zero.
hashitem_T *const changedtick_hi = hash_find(
&buf->b_vars->dv_hashtab, (const char_u *)"changedtick");
assert(changedtick_hi != NULL);
hash_remove(&buf->b_vars->dv_hashtab, changedtick_hi);
}
vars_clear(&buf->b_vars->dv_hashtab); // free all internal variables
hash_init(&buf->b_vars->dv_hashtab);
if (free_flags & kBffInitChangedtick) {
buf_init_changedtick(buf);
}
uc_clear(&buf->b_ucmds); // clear local user commands
buf_delete_signs(buf, (char_u *)"*"); // delete any signs
extmark_free_all(buf); // delete any extmarks
map_clear_int(buf, MAP_ALL_MODES, true, false); // clear local mappings
map_clear_int(buf, MAP_ALL_MODES, true, true); // clear local abbrevs
XFREE_CLEAR(buf->b_start_fenc);
buf_updates_unregister_all(buf);
}
/*
* Free the b_wininfo list for buffer "buf".
*/
static void clear_wininfo(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);
deleteFoldRecurse(&wip->wi_folds);
}
xfree(wip);
}
}
/*
* Go to another buffer. Handles the result of the ATTENTION dialog.
*/
void goto_buffer(exarg_T *eap, int start, int dir, int count)
{
bufref_T old_curbuf;
set_bufref(&old_curbuf, curbuf);
swap_exists_action = SEA_DIALOG;
(void)do_buffer(*eap->cmd == 's' ? DOBUF_SPLIT : DOBUF_GOTO,
start, dir, count, eap->forceit);
if (swap_exists_action == SEA_QUIT && *eap->cmd == 's') {
cleanup_T cs;
// Reset the error/interrupt/exception state here so that
// aborting() returns false when closing a window.
enter_cleanup(&cs);
// Quitting means closing the split window, nothing else.
win_close(curwin, true);
swap_exists_action = SEA_NONE;
swap_exists_did_quit = true;
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
} else {
handle_swap_exists(&old_curbuf);
}
}
/// Handle the situation of swap_exists_action being set.
///
/// It is allowed for "old_curbuf" to be NULL or invalid.
///
/// @param old_curbuf The buffer to check for.
void handle_swap_exists(bufref_T *old_curbuf)
{
cleanup_T cs;
long old_tw = curbuf->b_p_tw;
buf_T *buf;
if (swap_exists_action == SEA_QUIT) {
// Reset the error/interrupt/exception state here so that
// aborting() returns false when closing a buffer.
enter_cleanup(&cs);
// 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 (old_curbuf == NULL
|| !bufref_valid(old_curbuf)
|| old_curbuf->br_buf == curbuf) {
buf = buflist_new(NULL, NULL, 1L, BLN_CURBUF | BLN_LISTED);
} else {
buf = old_curbuf->br_buf;
}
if (buf != NULL) {
int old_msg_silent = msg_silent;
if (shortmess(SHM_FILEINFO)) {
msg_silent = 1; // prevent fileinfo message
}
enter_buffer(buf);
// restore msg_silent, so that the command line will be shown
msg_silent = old_msg_silent;
if (old_tw != curbuf->b_p_tw) {
check_colorcolumn(curwin);
}
}
// If "old_curbuf" is NULL we are in big trouble here...
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
} else if (swap_exists_action == SEA_RECOVER) {
// Reset the error/interrupt/exception state here so that
// aborting() returns false when closing a buffer.
enter_cleanup(&cs);
// User selected Recover at ATTENTION prompt.
msg_scroll = true;
ml_recover(false);
MSG_PUTS("\n"); // don't overwrite the last message
cmdline_row = msg_row;
do_modelines(0);
/* Restore the error/interrupt/exception state if not discarded by a
* new aborting error, interrupt, or uncaught exception. */
leave_cleanup(&cs);
}
swap_exists_action = SEA_NONE; // -V519
}
/*
* 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(
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; os_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, 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 (!ascii_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_int(&arg, false, 0);
}
}
}
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(_("%d buffers unloaded"), deleted);
}
} else if (command == DOBUF_DEL) {
if (deleted == 1) {
MSG(_("1 buffer deleted"));
} else {
smsg(_("%d buffers deleted"), deleted);
}
} else {
if (deleted == 1) {
MSG(_("1 buffer wiped out"));
} else {
smsg(_("%d buffers wiped out"), deleted);
}
}
}
}
return errormsg;
}
/*
* Make the current buffer empty.
* Used when it is wiped out and it's the last buffer.
*/
static int empty_curbuf(int close_others, int forceit, int action)
{
int retval;
buf_T *buf = curbuf;
if (action == DOBUF_UNLOAD) {
EMSG(_("E90: Cannot unload last buffer"));
return FAIL;
}
bufref_T bufref;
set_bufref(&bufref, buf);
if (close_others) {
// Close any other windows on this buffer, then make it empty.
close_windows(buf, true);
}
setpcmark();
retval = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE,
forceit ? ECMD_FORCEIT : 0, curwin);
// 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 && bufref_valid(&bufref) && buf->b_nwindows == 0) {
close_buffer(NULL, buf, action, false);
}
if (!close_others) {
need_fileinfo = false;
}
return retval;
}
/*
* 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
*
* Return FAIL or OK.
*/
int
do_buffer(
int action,
int start,
int dir, // FORWARD or BACKWARD
int count, // buffer number or number of buffers
int forceit // true for :...!
)
{
buf_T *buf;
buf_T *bp;
int unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
|| action == DOBUF_WIPE);
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 && !bufIsChanged(buf));
}
if (!bufIsChanged(buf)) {
EMSG(_("E84: 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 {
bp = NULL;
while (count > 0 || (!unload && !buf->b_p_bl && bp != buf)) {
/* remember the buffer where we start, we come back there when all
* buffers are unlisted. */
if (bp == NULL) {
bp = buf;
}
if (dir == FORWARD) {
buf = buf->b_next;
if (buf == NULL) {
buf = firstbuf;
}
} else {
buf = buf->b_prev;
if (buf == NULL) {
buf = lastbuf;
}
}
// don't count unlisted buffers
if (unload || buf->b_p_bl) {
count--;
bp = NULL; // use this buffer as new starting point
}
if (bp == buf) {
// back where we started, didn't find anything.
EMSG(_("E85: There is no listed buffer"));
return FAIL;
}
}
}
if (buf == NULL) { // could not find it
if (start == DOBUF_FIRST) {
// don't warn when deleting
if (!unload) {
EMSGN(_(e_nobufnr), count);
}
} else if (dir == FORWARD) {
EMSG(_("E87: Cannot go beyond last buffer"));
} else {
EMSG(_("E88: Cannot go before first buffer"));
}
return FAIL;
}
/*
* delete buffer buf from memory and/or the list
*/
if (unload) {
int forward;
bufref_T bufref;
set_bufref(&bufref, buf);
/* When unloading or deleting a buffer that's already unloaded and
* unlisted: fail silently. */
if (action != DOBUF_WIPE && buf->b_ml.ml_mfp == NULL && !buf->b_p_bl) {
return FAIL;
}
if (!forceit && (buf->terminal || bufIsChanged(buf))) {
if ((p_confirm || cmdmod.confirm) && p_write && !buf->terminal) {
dialog_changed(buf, false);
if (!bufref_valid(&bufref)) {
// Autocommand deleted buffer, oops! It's not changed now.
return FAIL;
}
// If it's still changed fail silently, the dialog already
// mentioned why it fails.
if (bufIsChanged(buf)) {
return FAIL;
}
} else {
if (buf->terminal) {
if (p_confirm || cmdmod.confirm) {
if (!dialog_close_terminal(buf)) {
return FAIL;
}
} else {
EMSG2(_("E89: %s will be killed (add ! to override)"),
(char *)buf->b_fname);
return FAIL;
}
} else {
EMSGN(_("E89: No write since last change for buffer %" PRId64
" (add ! to override)"),
buf->b_fnum);
return FAIL;
}
}
}
// When closing the current buffer stop Visual mode.
if (buf == curbuf && VIsual_active) {
end_visual_mode();
}
/*
* If deleting the last (listed) buffer, make it empty.
* The last (listed) buffer cannot be unloaded.
*/
bp = NULL;
FOR_ALL_BUFFERS(bp2) {
if (bp2->b_p_bl && bp2 != buf) {
bp = bp2;
break;
}
}
if (bp == NULL && buf == curbuf) {
return empty_curbuf(true, forceit, action);
}
/*
* If the deleted buffer is the current one, close the current window
* (unless it's the only window). Repeat this so long as we end up in
* a window with this buffer.
*/
while (buf == curbuf
&& !(curwin->w_closing || curwin->w_buffer->b_locked > 0)
&& (!ONE_WINDOW || first_tabpage->tp_next != NULL)) {
if (win_close(curwin, false) == FAIL) {
break;
}
}
/*
* If the buffer to be deleted is not the current one, delete it here.
*/
if (buf != curbuf) {
close_windows(buf, false);
if (buf != curbuf && bufref_valid(&bufref) && buf->b_nwindows <= 0) {
close_buffer(NULL, buf, action, false);
}
return OK;
}
// Deleting the current buffer: Need to find another buffer to go to.
// There should be another, otherwise it would have been handled
// above. However, autocommands may have deleted all buffers.
// First use au_new_curbuf.br_buf, if it is valid.
// Then prefer the buffer we most recently visited.
// Else try to find one that is loaded, after the current buffer,
// then before the current buffer.
// Finally use any buffer.
buf = NULL; // Selected buffer.
bp = NULL; // Used when no loaded buffer found.
if (au_new_curbuf.br_buf != NULL && bufref_valid(&au_new_curbuf)) {
buf = au_new_curbuf.br_buf;
} else if (curwin->w_jumplistlen > 0) {
int jumpidx;
jumpidx = curwin->w_jumplistidx - 1;
if (jumpidx < 0) {
jumpidx = curwin->w_jumplistlen - 1;
}
forward = jumpidx;
while (jumpidx != curwin->w_jumplistidx) {
buf = buflist_findnr(curwin->w_jumplist[jumpidx].fmark.fnum);
if (buf != NULL) {
if (buf == curbuf || !buf->b_p_bl) {
buf = NULL; // skip current and unlisted bufs
} else if (buf->b_ml.ml_mfp == NULL) {
// skip unloaded buf, but may keep it for later
if (bp == NULL) {
bp = buf;
}
buf = NULL;
}
}
if (buf != NULL) { // found a valid buffer: stop searching
break;
}
// advance to older entry in jump list
if (!jumpidx && curwin->w_jumplistidx == curwin->w_jumplistlen) {
break;
}
if (--jumpidx < 0) {
jumpidx = curwin->w_jumplistlen - 1;
}
if (jumpidx == forward) { // List exhausted for sure
break;
}
}
}
if (buf == NULL) { // No previous buffer, Try 2'nd approach
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_help == curbuf->b_help && buf->b_p_bl) {
if (buf->b_ml.ml_mfp != NULL) { // found loaded buffer
break;
}
if (bp == NULL) { // remember unloaded buf for later
bp = buf;
}
}
if (forward) {
buf = buf->b_next;
} else {
buf = buf->b_prev;
}
}
}
if (buf == NULL) { // No loaded buffer, use unloaded one
buf = bp;
}
if (buf == NULL) { // No loaded buffer, find listed one
FOR_ALL_BUFFERS(buf2) {
if (buf2->b_p_bl && buf2 != curbuf) {
buf = buf2;
break;
}
}
}
if (buf == NULL) { // Still no buffer, just take one
if (curbuf->b_next != NULL) {
buf = curbuf->b_next;
} else {
buf = curbuf->b_prev;
}
}
}
if (buf == NULL) {
/* Autocommands must have wiped out all other buffers. Only option
* now is to make the current buffer empty. */
return empty_curbuf(false, forceit, action);
}
/*
* make buf current buffer
*/
if (action == DOBUF_SPLIT) { // split window first
// If 'switchbuf' contains "useopen": jump to first window containing
// "buf" if one exists
if ((swb_flags & SWB_USEOPEN) && buf_jump_open_win(buf)) {
return OK;
}
// If 'switchbuf' contains "usetab": jump to first window in any tab
// page containing "buf" if one exists
if ((swb_flags & SWB_USETAB) && buf_jump_open_tab(buf)) {
return OK;
}
if (win_split(0, 0) == 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)) {
if ((p_confirm || cmdmod.confirm) && p_write) {
bufref_T bufref;
set_bufref(&bufref, buf);
dialog_changed(curbuf, false);
if (!bufref_valid(&bufref)) {
// Autocommand deleted buffer, oops!
return FAIL;
}
}
if (bufIsChanged(curbuf)) {
no_write_message();
return FAIL;
}
}
// Go to the other buffer.
set_curbuf(buf, action);
if (action == DOBUF_SPLIT) {
RESET_BINDING(curwin); // reset 'scrollbind' and 'cursorbind'
}
if (aborting()) { // autocmds may abort script processing
return FAIL;
}
return OK;
}
/*
* Set current buffer to "buf". Executes autocommands and closes current
* buffer. "action" tells how to close the current buffer:
* DOBUF_GOTO free or hide it
* DOBUF_SPLIT nothing
* DOBUF_UNLOAD unload it
* DOBUF_DEL delete it
* DOBUF_WIPE wipe it out
*/
void set_curbuf(buf_T *buf, int action)
{
buf_T *prevbuf;
int unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
|| action == DOBUF_WIPE);
long old_tw = curbuf->b_p_tw;
setpcmark();
if (!cmdmod.keepalt) {
curwin->w_alt_fnum = curbuf->b_fnum; // remember alternate file
}
buflist_altfpos(curwin); // remember curpos
// Don't restart Select mode after switching to another buffer.
VIsual_reselect = false;
// close_windows() or apply_autocmds() may change curbuf and wipe out "buf"
prevbuf = curbuf;
bufref_T newbufref;
bufref_T prevbufref;
set_bufref(&prevbufref, prevbuf);
set_bufref(&newbufref, buf);
// Autocommands may delete the curren buffer and/or the buffer we wan to go
// to. In those cases don't close the buffer.
if (!apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, false, curbuf)
|| (bufref_valid(&prevbufref) && bufref_valid(&newbufref)
&& !aborting())) {
if (prevbuf == curwin->w_buffer) {
reset_synblock(curwin);
}
if (unload) {
close_windows(prevbuf, false);
}
if (bufref_valid(&prevbufref) && !aborting()) {
win_T *previouswin = curwin;
if (prevbuf == curbuf) {
u_sync(false);
}
close_buffer(prevbuf == curwin->w_buffer ? curwin : NULL,
prevbuf,
unload
? action
: (action == DOBUF_GOTO && !buf_hide(prevbuf)
&& !bufIsChanged(prevbuf)) ? DOBUF_UNLOAD : 0,
false);
if (curwin != previouswin && win_valid(previouswin)) {
// autocommands changed curwin, Grr!
curwin = previouswin;
}
}
}
/* An autocommand may have deleted "buf", already entered it (e.g., when
* it did ":bunload") or aborted the script processing!
* If curwin->w_buffer is null, enter_buffer() will make it valid again */
if ((buf_valid(buf) && buf != curbuf
&& !aborting()
) || curwin->w_buffer == NULL
) {
enter_buffer(buf);
if (old_tw != curbuf->b_p_tw) {
check_colorcolumn(curwin);
}
}
if (bufref_valid(&prevbufref) && prevbuf->terminal != NULL) {
terminal_check_size(prevbuf->terminal);
}
}
/*
* Enter a new current buffer.
* Old curbuf must have been abandoned already! This also means "curbuf" may
* be pointing to freed memory.
*/
void enter_buffer(buf_T *buf)
{
// Copy buffer and window local option values. Not for a help buffer.
buf_copy_options(buf, BCO_ENTER | BCO_NOHELP);
if (!buf->b_help) {
get_winopts(buf);
} else {
// Remove all folds in the window.
clearFolding(curwin);
}
foldUpdateAll(curwin); // update folds (later).
// Get the buffer in the current window.
curwin->w_buffer = buf;
curbuf = buf;
curbuf->b_nwindows++;
if (curwin->w_p_diff) {
diff_buf_add(curbuf);
}
curwin->w_s = &(curbuf->b_s);
// Cursor on first line by default.
curwin->w_cursor.lnum = 1;
curwin->w_cursor.col = 0;
curwin->w_cursor.coladd = 0;
curwin->w_set_curswant = true;
curwin->w_topline_was_set = false;
// mark cursor position as being invalid
curwin->w_valid = 0;
// Make sure the buffer is loaded.
if (curbuf->b_ml.ml_mfp == NULL) { // need to load the file
// If there is no filetype, allow for detecting one. Esp. useful for
// ":ball" used in an autocommand. If there already is a filetype we
// might prefer to keep it.
if (*curbuf->b_p_ft == NUL) {
did_filetype = false;
}
open_buffer(false, NULL, 0);
} else {
if (!msg_silent && !shortmess(SHM_FILEINFO)) {
need_fileinfo = true; // display file info after redraw
}
// check if file changed
(void)buf_check_timestamp(curbuf, false);
curwin->w_topline = 1;
curwin->w_topfill = 0;
apply_autocmds(EVENT_BUFENTER, NULL, NULL, false, curbuf);
apply_autocmds(EVENT_BUFWINENTER, NULL, NULL, false, curbuf);
}
/* If autocommands did not change the cursor position, restore cursor lnum
* and possibly cursor col. */
if (curwin->w_cursor.lnum == 1 && inindent(0)) {
buflist_getfpos();
}
check_arg_idx(curwin); // check for valid arg_idx
maketitle();
// when autocmds didn't change it
if (curwin->w_topline == 1 && !curwin->w_topline_was_set) {
scroll_cursor_halfway(false); // redisplay at correct position
}
// Change directories when the 'acd' option is set.
do_autochdir();
if (curbuf->b_kmap_state & KEYMAP_INIT) {
(void)keymap_init();
}
// May need to set the spell language. Can only do this after the buffer
// has been properly setup.
if (!curbuf->b_help && curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL) {
(void)did_set_spelllang(curwin);
}
redraw_later(NOT_VALID);
}
// Change to the directory of the current buffer.
// Don't do this while still starting up.
void do_autochdir(void)
{
if (p_acd) {
if (starting == 0
&& curbuf->b_ffname != NULL
&& vim_chdirfile(curbuf->b_ffname) == OK) {
post_chdir(kCdScopeGlobal, false);
shorten_fnames(true);
}
}
}
void no_write_message(void)
{
EMSG(_("E37: No write since last change (add ! to override)"));
}
void no_write_message_nobang(void)
{
EMSG(_("E37: No write since last change"));
}
//
// functions for dealing with the buffer list
//
static int top_file_num = 1; ///< highest file number
/// Initialize b:changedtick and changedtick_val attribute
///
/// @param[out] buf Buffer to intialize for.
static inline void buf_init_changedtick(buf_T *const buf)
FUNC_ATTR_ALWAYS_INLINE FUNC_ATTR_NONNULL_ALL
{
STATIC_ASSERT(sizeof("changedtick") <= sizeof(buf->changedtick_di.di_key),
"buf->changedtick_di cannot hold large enough keys");
buf->changedtick_di = (ChangedtickDictItem) {
.di_flags = DI_FLAGS_RO|DI_FLAGS_FIX, // Must not include DI_FLAGS_ALLOC.
.di_tv = (typval_T) {
.v_type = VAR_NUMBER,
.v_lock = VAR_FIXED,
.vval.v_number = buf_get_changedtick(buf),
},
.di_key = "changedtick",
};
tv_dict_add(buf->b_vars, (dictitem_T *)&buf->changedtick_di);
}
/// Add a file name to the buffer list.
/// 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 (flags & BLN_CURBUF) is true, may use current buffer.
/// If (flags & BLN_LISTED) is true, add new buffer to buffer list.
/// If (flags & BLN_DUMMY) is true, don't count it as a real buffer.
/// If (flags & BLN_NEW) is true, don't use an existing buffer.
/// If (flags & BLN_NOOPT) is true, don't copy options from the current buffer
/// if the buffer already exists.
/// This is the ONLY way to create a new buffer.
///
/// @param ffname full path of fname or relative
/// @param sfname short fname or NULL
/// @param lnum preferred cursor line
/// @param flags BLN_ defines
/// @param bufnr
///
/// @return pointer to the buffer
buf_T * buflist_new(char_u *ffname, char_u *sfname, linenr_T lnum, int flags)
{
buf_T *buf;
fname_expand(curbuf, &ffname, &sfname); // will allocate ffname
/*
* If file name already exists in the list, update the entry.
*/
/* We can use inode numbers when the file exists. Works better
* for hard links. */
FileID file_id;
bool file_id_valid = (sfname != NULL
&& os_fileid((char *)sfname, &file_id));
if (ffname != NULL && !(flags & (BLN_DUMMY | BLN_NEW))
&& (buf = buflist_findname_file_id(ffname, &file_id,
file_id_valid)) != NULL) {
xfree(ffname);
if (lnum != 0) {
buflist_setfpos(buf, curwin, lnum, (colnr_T)0, false);
}
if ((flags & BLN_NOOPT) == 0) {
// Copy the options now, if 'cpo' doesn't have 's' and not done already.
buf_copy_options(buf, 0);
}
if ((flags & BLN_LISTED) && !buf->b_p_bl) {
buf->b_p_bl = true;
bufref_T bufref;
set_bufref(&bufref, buf);
if (!(flags & BLN_DUMMY)) {
if (apply_autocmds(EVENT_BUFADD, NULL, NULL, false, buf)
&& !bufref_valid(&bufref)) {
return NULL;
}
}
}
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!
* (A spell file buffer is allocated in spell.c, but that's not a normal
* buffer.)
*/
buf = NULL;
if ((flags & BLN_CURBUF) && curbuf_reusable()) {
assert(curbuf != NULL);
buf = curbuf;
/* It's like this buffer is deleted. Watch out for autocommands that
* change curbuf! If that happens, allocate a new buffer anyway. */
if (curbuf->b_p_bl) {
apply_autocmds(EVENT_BUFDELETE, NULL, NULL, false, curbuf);
}
if (buf == curbuf) {
apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, false, curbuf);
}
if (aborting()) { // autocmds may abort script processing
return NULL;
}
if (buf == curbuf) {
// Make sure 'bufhidden' and 'buftype' are empty
clear_string_option(&buf->b_p_bh);
clear_string_option(&buf->b_p_bt);
}
}
if (buf != curbuf || curbuf == NULL) {
buf = xcalloc(1, sizeof(buf_T));
// init b: variables
buf->b_vars = tv_dict_alloc();
buf->b_signcols_max = -1;
init_var_dict(buf->b_vars, &buf->b_bufvar, VAR_SCOPE);
buf_init_changedtick(buf);
}
if (ffname != NULL) {
buf->b_ffname = ffname;
buf->b_sfname = vim_strsave(sfname);
}
clear_wininfo(buf);
buf->b_wininfo = xcalloc(1, sizeof(wininfo_T));
if (ffname != NULL && (buf->b_ffname == NULL || buf->b_sfname == NULL)) {
XFREE_CLEAR(buf->b_ffname);
XFREE_CLEAR(buf->b_sfname);
if (buf != curbuf) {
free_buffer(buf);
}
return NULL;
}
if (buf == curbuf) {
// free all things allocated for this buffer
buf_freeall(buf, 0);
if (buf != curbuf) { // autocommands deleted the buffer!
return NULL;
}
if (aborting()) { // autocmds may abort script processing
return NULL;
}
free_buffer_stuff(buf, kBffInitChangedtick); // delete local vars et al.
// Init the options.
buf->b_p_initialized = false;
buf_copy_options(buf, BCO_ENTER);
// need to reload lmaps and set b:keymap_name
curbuf->b_kmap_state |= KEYMAP_INIT;
} 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++;
handle_register_buffer(buf);
if (top_file_num < 0) { // wrap around (may cause duplicates)
EMSG(_("W14: Warning: List of file names overflow"));
if (emsg_silent == 0) {
ui_flush();
os_delay(3000L, true); // make sure it is noticed
}
top_file_num = 1;
}
/*
* Always copy the options from the current buffer.
*/
buf_copy_options(buf, BCO_ALWAYS);
}
buf->b_wininfo->wi_fpos.lnum = lnum;
buf->b_wininfo->wi_win = curwin;
hash_init(&buf->b_s.b_keywtab);
hash_init(&buf->b_s.b_keywtab_ic);
buf->b_fname = buf->b_sfname;
if (!file_id_valid) {
buf->file_id_valid = false;
} else {
buf->file_id_valid = true;
buf->file_id = file_id;
}
buf->b_u_synced = true;
buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
if (flags & BLN_DUMMY) {
buf->b_flags |= BF_DUMMY;
}
buf_clear_file(buf);
clrallmarks(buf); // clear marks
fmarks_check_names(buf); // check file marks for this file
buf->b_p_bl = (flags & BLN_LISTED) ? true : false; // init 'buflisted'
kv_destroy(buf->update_channels);
kv_init(buf->update_channels);
kv_destroy(buf->update_callbacks);
kv_init(buf->update_callbacks);
if (!(flags & BLN_DUMMY)) {
// Tricky: these autocommands may change the buffer list. They could also
// split the window with re-using the one empty buffer. This may result in
// unexpectedly losing the empty buffer.
bufref_T bufref;
set_bufref(&bufref, buf);
if (apply_autocmds(EVENT_BUFNEW, NULL, NULL, false, buf)
&& !bufref_valid(&bufref)) {
return NULL;
}
if ((flags & BLN_LISTED)
&& apply_autocmds(EVENT_BUFADD, NULL, NULL, false, buf)
&& !bufref_valid(&bufref)) {
return NULL;
}
if (aborting()) {
// Autocmds may abort script processing.
return NULL;
}
}
buf->b_prompt_callback.type = kCallbackNone;
buf->b_prompt_interrupt.type = kCallbackNone;
buf->b_prompt_text = NULL;
return buf;
}
/// Return true if the current buffer is empty, unnamed, unmodified and used in
/// only one window. That means it can be reused.
bool curbuf_reusable(void)
{
return (curbuf != NULL
&& curbuf->b_ffname == NULL
&& curbuf->b_nwindows <= 1
&& (curbuf->b_ml.ml_mfp == NULL || BUFEMPTY())
&& !bt_quickfix(curbuf)
&& !curbufIsChanged());
}
/*
* Free the memory for the options of a buffer.
* If "free_p_ff" is true also free 'fileformat', 'buftype' and
* 'fileencoding'.
*/
void free_buf_options(buf_T *buf, int free_p_ff)
{
if (free_p_ff) {
clear_string_option(&buf->b_p_fenc);
clear_string_option(&buf->b_p_ff);
clear_string_option(&buf->b_p_bh);
clear_string_option(&buf->b_p_bt);
}
clear_string_option(&buf->b_p_def);
clear_string_option(&buf->b_p_inc);
clear_string_option(&buf->b_p_inex);
clear_string_option(&buf->b_p_inde);
clear_string_option(&buf->b_p_indk);
clear_string_option(&buf->b_p_fp);
clear_string_option(&buf->b_p_fex);
clear_string_option(&buf->b_p_kp);
clear_string_option(&buf->b_p_mps);
clear_string_option(&buf->b_p_fo);
clear_string_option(&buf->b_p_flp);
clear_string_option(&buf->b_p_isk);
clear_string_option(&buf->b_p_keymap);
keymap_ga_clear(&buf->b_kmap_ga);
ga_clear(&buf->b_kmap_ga);
clear_string_option(&buf->b_p_com);
clear_string_option(&buf->b_p_cms);
clear_string_option(&buf->b_p_nf);
clear_string_option(&buf->b_p_syn);
clear_string_option(&buf->b_s.b_syn_isk);
clear_string_option(&buf->b_s.b_p_spc);
clear_string_option(&buf->b_s.b_p_spf);
vim_regfree(buf->b_s.b_cap_prog);
buf->b_s.b_cap_prog = NULL;
clear_string_option(&buf->b_s.b_p_spl);
clear_string_option(&buf->b_p_sua);
clear_string_option(&buf->b_p_ft);
clear_string_option(&buf->b_p_cink);
clear_string_option(&buf->b_p_cino);
clear_string_option(&buf->b_p_cinw);
clear_string_option(&buf->b_p_cpt);
clear_string_option(&buf->b_p_cfu);
clear_string_option(&buf->b_p_ofu);
clear_string_option(&buf->b_p_gp);
clear_string_option(&buf->b_p_mp);
clear_string_option(&buf->b_p_efm);
clear_string_option(&buf->b_p_ep);
clear_string_option(&buf->b_p_path);
clear_string_option(&buf->b_p_tags);
clear_string_option(&buf->b_p_tc);
clear_string_option(&buf->b_p_tfu);
clear_string_option(&buf->b_p_dict);
clear_string_option(&buf->b_p_tsr);
clear_string_option(&buf->b_p_qe);
buf->b_p_ar = -1;
buf->b_p_ul = NO_LOCAL_UNDOLEVEL;
clear_string_option(&buf->b_p_lw);
clear_string_option(&buf->b_p_bkc);
clear_string_option(&buf->b_p_menc);
}
/// 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.
/// if (options & GETF_SWITCH) respect 'switchbuf' settings when jumping
///
/// Return FAIL for failure, OK for success.
int buflist_getfile(int n, linenr_T lnum, int options, int forceit)
{
buf_T *buf;
win_T *wp = NULL;
pos_T *fpos;
colnr_T col;
buf = buflist_findnr(n);
if (buf == NULL) {
if ((options & GETF_ALT) && n == 0) {
EMSG(_(e_noalt));
} else {
EMSGN(_("E92: Buffer %" PRId64 " not found"), n);
}
return FAIL;
}
// if alternate file is the current buffer, nothing to do
if (buf == curbuf) {
return OK;
}
if (text_locked()) {
text_locked_msg();
return FAIL;
}
if (curbuf_locked()) {
return FAIL;
}
// 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;
if (options & GETF_SWITCH) {
// If 'switchbuf' contains "useopen": jump to first window containing
// "buf" if one exists
if (swb_flags & SWB_USEOPEN) {
wp = buf_jump_open_win(buf);
}
// If 'switchbuf' contains "usetab": jump to first window in any tab
// page containing "buf" if one exists
if (wp == NULL && (swb_flags & SWB_USETAB)) {
wp = buf_jump_open_tab(buf);
}
// If 'switchbuf' contains "split", "vsplit" or "newtab" and the
// current buffer isn't empty: open new tab or window
if (wp == NULL && (swb_flags & (SWB_VSPLIT | SWB_SPLIT | SWB_NEWTAB))
&& !BUFEMPTY()) {
if (swb_flags & SWB_NEWTAB) {
tabpage_new();
} else if (win_split(0, (swb_flags & SWB_VSPLIT) ? WSP_VERT : 0)
== FAIL) {
return FAIL;
}
RESET_BINDING(curwin);
}
}
RedrawingDisabled++;
if (GETFILE_SUCCESS(getfile(buf->b_fnum, NULL, NULL,
(options & GETF_SETMARK), lnum, forceit))) {
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();
curwin->w_cursor.coladd = 0;
curwin->w_set_curswant = true;
}
return OK;
}
RedrawingDisabled--;
return FAIL;
}
// Go to the last known line number for the current buffer.
void buflist_getfpos(void)
{
pos_T *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();
curwin->w_cursor.coladd = 0;
curwin->w_set_curswant = true;
}
}
/*
* Find file in buffer list by name (it has to be for the current window).
* Returns NULL if not found.
*/
buf_T *buflist_findname_exp(char_u *fname)
{
char_u *ffname;
buf_T *buf = NULL;
// First make the name into a full path name
ffname = (char_u *)FullName_save((char *)fname,
#ifdef UNIX
// force expansion, get rid of symbolic links
true
#else
false
#endif
);
if (ffname != NULL) {
buf = buflist_findname(ffname);
xfree(ffname);
}
return buf;
}
/*
* Find file in buffer list by name (it has to be for the current window).
* "ffname" must have a full path.
* Skips dummy buffers.
* Returns NULL if not found.
*/
buf_T *buflist_findname(char_u *ffname)
{
FileID file_id;
bool file_id_valid = os_fileid((char *)ffname, &file_id);
return buflist_findname_file_id(ffname, &file_id, file_id_valid);
}
/*
* Same as buflist_findname(), but pass the FileID structure to avoid
* getting it twice for the same file.
* Returns NULL if not found.
*/
static buf_T *buflist_findname_file_id(char_u *ffname, FileID *file_id,
bool file_id_valid)
{
// Start at the last buffer, expect to find a match sooner.
FOR_ALL_BUFFERS_BACKWARDS(buf) {
if ((buf->b_flags & BF_DUMMY) == 0
&& !otherfile_buf(buf, ffname, file_id, file_id_valid)) {
return buf;
}
}
return NULL;
}
/// Find file in buffer list by a regexp pattern.
/// Return fnum of the found buffer.
/// Return < 0 for error.
int buflist_findpat(
const char_u *pattern,
const char_u *pattern_end, // pointer to first char after pattern
int unlisted, // find unlisted buffers
int diffmode, // find diff-mode buffers only
int curtab_only // find buffers in current tab only
)
{
int match = -1;
int find_listed;
char_u *pat;
char_u *patend;
int attempt;
char_u *p;
int toggledollar;
if (pattern_end == pattern + 1 && (*pattern == '%' || *pattern == '#')) {
if (*pattern == '%') {
match = curbuf->b_fnum;
} else {
match = curwin->w_alt_fnum;
}
buf_T *found_buf = buflist_findnr(match);
if (diffmode && !(found_buf && diff_mode_buf(found_buf))) {
match = -1;
}
} else {
//
// Try four ways of matching a listed buffer:
// attempt == 0: without '^' or '$' (at any position)
// attempt == 1: with '^' at start (only at position 0)
// attempt == 2: with '$' at end (only match at end)
// attempt == 3: with '^' at start and '$' at end (only full match)
// Repeat this for finding an unlisted buffer if there was no matching
// listed buffer.
//
pat = file_pat_to_reg_pat(pattern, pattern_end, NULL, false);
if (pat == NULL) {
return -1;
}
patend = pat + STRLEN(pat) - 1;
toggledollar = (patend > pat && *patend == '$');
// First try finding a listed buffer. If not found and "unlisted"
// is true, try finding an unlisted buffer.
find_listed = true;
for (;; ) {
for (attempt = 0; attempt <= 3; attempt++) {
// may add '^' and '$'
if (toggledollar) {
*patend = (attempt < 2) ? NUL : '$'; // add/remove '$'
}
p = pat;
if (*p == '^' && !(attempt & 1)) { // add/remove '^'
p++;
}
regmatch_T regmatch;
regmatch.regprog = vim_regcomp(p, p_magic ? RE_MAGIC : 0);
if (regmatch.regprog == NULL) {
xfree(pat);
return -1;
}
FOR_ALL_BUFFERS_BACKWARDS(buf) {
if (buf->b_p_bl == find_listed
&& (!diffmode || diff_mode_buf(buf))
&& buflist_match(&regmatch, buf, false) != NULL) {
if (curtab_only) {
/* Ignore the match if the buffer is not open in
* the current tab. */
bool found_window = false;
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_buffer == buf) {
found_window = true;
break;
}
}
if (!found_window) {
continue;
}
}
if (match >= 0) { // already found a match
match = -2;
break;
}
match = buf->b_fnum; // remember first match
}
}
vim_regfree(regmatch.regprog);
if (match >= 0) { // found one match
break;
}
}
/* Only search for unlisted buffers if there was no match with
* a listed buffer. */
if (!unlisted || !find_listed || match != -1) {
break;
}
find_listed = false;
}
xfree(pat);
}
if (match == -2) {
EMSG2(_("E93: More than one match for %s"), pattern);
} else if (match < 0) {
EMSG2(_("E94: No matching buffer for %s"), pattern);
}
return match;
}
/*
* Find all buffer names that match.
* For command line expansion of ":buf" and ":sbuf".
* Return OK if matches found, FAIL otherwise.
*/
int ExpandBufnames(char_u *pat, int *num_file, char_u ***file, int options)
{
int count = 0;
int round;
char_u *p;
int attempt;
char_u *patc;
*num_file = 0; // return values in case of FAIL
*file = NULL;
// Make a copy of "pat" and change "^" to "\(^\|[\/]\)".
if (*pat == '^') {
patc = xmalloc(STRLEN(pat) + 11);
STRCPY(patc, "\\(^\\|[\\/]\\)");
STRCPY(patc + 11, pat + 1);
} else
patc = pat;
/*
* attempt == 0: try match with '\<', match at start of word
* attempt == 1: try match without '\<', match anywhere
*/
for (attempt = 0; attempt <= 1; attempt++) {
if (attempt > 0 && patc == pat) {
break; // there was no anchor, no need to try again
}
regmatch_T regmatch;
regmatch.regprog = vim_regcomp(patc + attempt * 11, RE_MAGIC);
if (regmatch.regprog == NULL) {
if (patc != pat) {
xfree(patc);
}
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_ALL_BUFFERS(buf) {
if (!buf->b_p_bl) { // skip unlisted buffers
continue;
}
p = buflist_match(&regmatch, buf, p_wic);
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 = xmalloc((size_t)count * sizeof(**file));
}
}
vim_regfree(regmatch.regprog);
if (count) { // match(es) found, break here
break;
}
}
if (patc != pat) {
xfree(patc);
}
*num_file = count;
return count == 0 ? FAIL : OK;
}
/// Check for a match on the file name for buffer "buf" with regprog "prog".
///
/// @param ignore_case When true, ignore case. Use 'fic' otherwise.
static char_u *buflist_match(regmatch_T *rmp, buf_T *buf, bool ignore_case)
{
// First try the short file name, then the long file name.
char_u *match = fname_match(rmp, buf->b_sfname, ignore_case);
if (match == NULL) {
match = fname_match(rmp, buf->b_ffname, ignore_case);
}
return match;
}
/// Try matching the regexp in "prog" with file name "name".
///
/// @param ignore_case When true, ignore case. Use 'fileignorecase' otherwise.
/// @return "name" when there is a match, NULL when not.
static char_u *fname_match(regmatch_T *rmp, char_u *name, bool ignore_case)
{
char_u *match = NULL;
char_u *p;
if (name != NULL) {
// Ignore case when 'fileignorecase' or the argument is set.
rmp->rm_ic = p_fic || ignore_case;
if (vim_regexec(rmp, name, (colnr_T)0)) {
match = name;
} else {
// Replace $(HOME) with '~' and try matching again.
p = home_replace_save(NULL, name);
if (vim_regexec(rmp, p, (colnr_T)0)) {
match = name;
}
xfree(p);
}
}
return match;
}
/// Find a file in the buffer list by buffer number.
buf_T *buflist_findnr(int nr)
{
if (nr == 0) {
nr = curwin->w_alt_fnum;
}
return handle_get_buffer((handle_T)nr);
}
/*
* Get name of file 'n' in the buffer list.
* When the file has no name an empty string is returned.
* 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(
int n,
int fullname,
int helptail // for help buffers return tail only
)
{
buf_T *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 line and column numbers for the given buffer and window
///
/// @param[in,out] buf Buffer for which line and column are set.
/// @param[in,out] win Window for which line and column are set.
/// @param[in] lnum Line number to be set. If it is zero then only
/// options are touched.
/// @param[in] col Column number to be set.
/// @param[in] copy_options If true save the local window option values.
void buflist_setfpos(buf_T *const buf, win_T *const win,
linenr_T lnum, colnr_T col,
bool copy_options)
FUNC_ATTR_NONNULL_ALL
{
wininfo_T *wip;
for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next) {
if (wip->wi_win == win) {
break;
}
}
if (wip == NULL) {
// allocate a new entry
wip = xcalloc(1, sizeof(wininfo_T));
wip->wi_win = win;
if (lnum == 0) { // set lnum even when it's 0
lnum = 1;
}
} else {
// remove the entry from the list
if (wip->wi_prev) {
wip->wi_prev->wi_next = wip->wi_next;
} else {
buf->b_wininfo = wip->wi_next;
}
if (wip->wi_next) {
wip->wi_next->wi_prev = wip->wi_prev;
}
if (copy_options && wip->wi_optset) {
clear_winopt(&wip->wi_opt);
deleteFoldRecurse(&wip->wi_folds);
}
}
if (lnum != 0) {
wip->wi_fpos.lnum = lnum;
wip->wi_fpos.col = col;
}
if (copy_options) {
// Save the window-specific option values.
copy_winopt(&win->w_onebuf_opt, &wip->wi_opt);
wip->wi_fold_manual = win->w_fold_manual;
cloneFoldGrowArray(&win->w_folds, &wip->wi_folds);
wip->wi_optset = true;
}
// insert the entry in front of the list
wip->wi_next = buf->b_wininfo;
buf->b_wininfo = wip;
wip->wi_prev = NULL;
if (wip->wi_next) {
wip->wi_next->wi_prev = wip;
}
return;
}
/// Check that "wip" has 'diff' set and the diff is only for another tab page.
/// That's because a diff is local to a tab page.
static bool wininfo_other_tab_diff(wininfo_T *wip)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
{
if (wip->wi_opt.wo_diff) {
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
// return false when it's a window in the current tab page, thus
// the buffer was in diff mode here
if (wip->wi_win == wp) {
return false;
}
}
return true;
}
return false;
}
/*
* Find info for the current window in buffer "buf".
* If not found, return the info for the most recently used window.
* When "skip_diff_buffer" is true avoid windows with 'diff' set that is in
* another tab page.
* Returns NULL when there isn't any info.
*/
static wininfo_T *find_wininfo(buf_T *buf, int skip_diff_buffer)
{
wininfo_T *wip;
for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
if (wip->wi_win == curwin
&& (!skip_diff_buffer || !wininfo_other_tab_diff(wip))
)
break;
/* If no wininfo for curwin, use the first in the list (that doesn't have
* 'diff' set and is in another tab page). */
if (wip == NULL) {
if (skip_diff_buffer) {
for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next) {
if (!wininfo_other_tab_diff(wip)) {
break;
}
}
} else {
wip = buf->b_wininfo;
}
}
return wip;
}
/*
* Reset the local window options to the values last used in this window.
* If the buffer wasn't used in this window before, use the values from
* the most recently used window. If the values were never set, use the
* global values for the window.
*/
void get_winopts(buf_T *buf)
{
wininfo_T *wip;
clear_winopt(&curwin->w_onebuf_opt);
clearFolding(curwin);
wip = find_wininfo(buf, true);
if (wip != NULL && wip->wi_win != curwin && wip->wi_win != NULL
&& wip->wi_win->w_buffer == buf) {
win_T *wp = wip->wi_win;
copy_winopt(&wp->w_onebuf_opt, &curwin->w_onebuf_opt);
curwin->w_fold_manual = wp->w_fold_manual;
curwin->w_foldinvalid = true;
cloneFoldGrowArray(&wp->w_folds, &curwin->w_folds);
} else if (wip != NULL && wip->wi_optset) {
copy_winopt(&wip->wi_opt, &curwin->w_onebuf_opt);
curwin->w_fold_manual = wip->wi_fold_manual;
curwin->w_foldinvalid = true;
cloneFoldGrowArray(&wip->wi_folds, &curwin->w_folds);
} else
copy_winopt(&curwin->w_allbuf_opt, &curwin->w_onebuf_opt);
if (curwin->w_float_config.style == kWinStyleMinimal) {
didset_window_options(curwin);
win_set_minimal_style(curwin);
}
// Set 'foldlevel' to 'foldlevelstart' if it's not negative.
if (p_fdls >= 0) {
curwin->w_p_fdl = p_fdls;
}
didset_window_options(curwin);
}
/*
* 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.
*/
pos_T *buflist_findfpos(buf_T *buf)
{
static pos_T no_position = { 1, 0, 0 };
wininfo_T *wip = find_wininfo(buf, false);
return (wip == NULL) ? &no_position : &(wip->wi_fpos);
}
/*
* Find the lnum for the buffer 'buf' for the current window.
*/
linenr_T buflist_findlnum(buf_T *buf)
{
return buflist_findfpos(buf)->lnum;
}
// List all known file names (for :files and :buffers command).
void buflist_list(exarg_T *eap)
{
buf_T *buf;
int len;
int i;
for (buf = firstbuf; buf != NULL && !got_int; buf = buf->b_next) {
// skip unspecified buffers
if ((!buf->b_p_bl && !eap->forceit && !strchr((char *)eap->arg, 'u'))
|| (strchr((char *)eap->arg, 'u') && buf->b_p_bl)
|| (strchr((char *)eap->arg, '+')
&& ((buf->b_flags & BF_READERR) || !bufIsChanged(buf)))
|| (strchr((char *)eap->arg, 'a')
&& (buf->b_ml.ml_mfp == NULL || buf->b_nwindows == 0))
|| (strchr((char *)eap->arg, 'h')
&& (buf->b_ml.ml_mfp == NULL || buf->b_nwindows != 0))
|| (strchr((char *)eap->arg, '-') && buf->b_p_ma)
|| (strchr((char *)eap->arg, '=') && !buf->b_p_ro)
|| (strchr((char *)eap->arg, 'x') && !(buf->b_flags & BF_READERR))
|| (strchr((char *)eap->arg, '%') && buf != curbuf)
|| (strchr((char *)eap->arg, '#')
&& (buf == curbuf || curwin->w_alt_fnum != buf->b_fnum))) {
continue;
}
if (buf_spname(buf) != NULL) {
STRLCPY(NameBuff, buf_spname(buf), MAXPATHL);
} else {
home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, true);
}
if (message_filtered(NameBuff)) {
continue;
}
const int changed_char = (buf->b_flags & BF_READERR)
? 'x'
: (bufIsChanged(buf) ? '+' : ' ');
int ro_char = !MODIFIABLE(buf) ? '-' : (buf->b_p_ro ? '=' : ' ');
if (buf->terminal) {
ro_char = channel_job_running((uint64_t)buf->b_p_channel) ? 'R' : 'F';
}
msg_putchar('\n');
len = vim_snprintf(
(char *)IObuff, IOSIZE - 20, "%3d%c%c%c%c%c \"%s\"",
buf->b_fnum,
buf->b_p_bl ? ' ' : 'u',
buf == curbuf ? '%' : (curwin->w_alt_fnum == buf->b_fnum ? '#' : ' '),
buf->b_ml.ml_mfp == NULL ? ' ' : (buf->b_nwindows == 0 ? 'h' : 'a'),
ro_char,
changed_char,
NameBuff);
if (len > IOSIZE - 20) {
len = IOSIZE - 20;
}
// put "line 999" in column 40 or after the file name
i = 40 - vim_strsize(IObuff);
do {
IObuff[len++] = ' ';
} while (--i > 0 && len < IOSIZE - 18);
vim_snprintf((char *)IObuff + len, (size_t)(IOSIZE - len),
_("line %" PRId64),
buf == curbuf ? (int64_t)curwin->w_cursor.lnum
: (int64_t)buflist_findlnum(buf));
msg_outtrans(IObuff);
line_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(int fnum, char_u **fname, linenr_T *lnum)
{
buf_T *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 file name for "buf"' 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(
buf_T *buf,
char_u *ffname,
char_u *sfname,
bool message // give message when buffer already exists
)
{
buf_T *obuf = NULL;
FileID file_id;
bool file_id_valid = false;
if (ffname == NULL || *ffname == NUL) {
// Removing the name.
XFREE_CLEAR(buf->b_ffname);
XFREE_CLEAR(buf->b_sfname);
} else {
fname_expand(buf, &ffname, &sfname); // will allocate ffname
if (ffname == NULL) { // out of memory
return FAIL;
}
/*
* 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
*/
file_id_valid = os_fileid((char *)ffname, &file_id);
if (!(buf->b_flags & BF_DUMMY)) {
obuf = buflist_findname_file_id(ffname, &file_id, file_id_valid);
}
if (obuf != NULL && obuf != buf) {
if (obuf->b_ml.ml_mfp != NULL) { // it's loaded, fail
if (message) {
EMSG(_("E95: Buffer with this name already exists"));
}
xfree(ffname);
return FAIL;
}
// delete from the list
close_buffer(NULL, obuf, DOBUF_WIPE, false);
}
sfname = vim_strsave(sfname);
#ifdef USE_FNAME_CASE
path_fix_case(sfname); // set correct case for short file name
#endif
xfree(buf->b_ffname);
xfree(buf->b_sfname);
buf->b_ffname = ffname;
buf->b_sfname = sfname;
}
buf->b_fname = buf->b_sfname;
if (!file_id_valid) {
buf->file_id_valid = false;
} else {
buf->file_id_valid = true;
buf->file_id = file_id;
}
buf_name_changed(buf);
return OK;
}
/*
* Crude way of changing the name of a buffer. Use with care!
* The name should be relative to the current directory.
*/
void buf_set_name(int fnum, char_u *name)
{
buf_T *buf;
buf = buflist_findnr(fnum);
if (buf != NULL) {
xfree(buf->b_sfname);
xfree(buf->b_ffname);
buf->b_ffname = vim_strsave(name);
buf->b_sfname = NULL;
/* Allocate ffname and expand into full path. Also resolves .lnk
* files on Win32. */
fname_expand(buf, &buf->b_ffname, &buf->b_sfname);
buf->b_fname = buf->b_sfname;
}
}
/*
* Take care of what needs to be done when the name of buffer "buf" has
* changed.
*/
void buf_name_changed(buf_T *buf)
{
/*
* If the file name changed, also change the name of the swapfile
*/
if (buf->b_ml.ml_mfp != NULL) {
ml_setname(buf);
}
if (curwin->w_buffer == buf) {
check_arg_idx(curwin); // check file name for arg list
}
maketitle(); // set window title
status_redraw_all(); // status lines need to be redrawn
fmarks_check_names(buf); // check named file marks
ml_timestamp(buf); // reset timestamp
}
/*
* set alternate file name for current window
*
* Used by do_one_cmd(), do_write() and do_ecmd().
* Return the buffer.
*/
buf_T *setaltfname(char_u *ffname, char_u *sfname, linenr_T lnum)
{
buf_T *buf;
// Create a buffer. 'buflisted' is not set if it's a new buffer
buf = buflist_new(ffname, sfname, lnum, 0);
if (buf != NULL && !cmdmod.keepalt) {
curwin->w_alt_fnum = buf->b_fnum;
}
return buf;
}
/*
* Get alternate file name for current window.
* Return NULL if there isn't any, and give error message if requested.
*/
char_u * getaltfname(
bool 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.
* Uses same flags as buflist_new(), except BLN_DUMMY.
*
* used by qf_init(), main() and doarglist()
*/
int buflist_add(char_u *fname, int flags)
{
buf_T *buf;
buf = buflist_new(fname, NULL, (linenr_T)0, flags);
if (buf != NULL) {
return buf->b_fnum;
}
return 0;
}
#if defined(BACKSLASH_IN_FILENAME)
/*
* Adjust slashes in file names. Called after 'shellslash' was set.
*/
void buflist_slash_adjust(void)
{
FOR_ALL_BUFFERS(bp) {
if (bp->b_ffname != NULL) {
slash_adjust(bp->b_ffname);
}
if (bp->b_sfname != NULL) {
slash_adjust(bp->b_sfname);
}
}
}
#endif
/*
* Set alternate cursor position for the current buffer and window "win".
* Also save the local window option values.
*/
void buflist_altfpos(win_T *win)
{
buflist_setfpos(curbuf, win, win->w_cursor.lnum, win->w_cursor.col, true);
}
/// Check that "ffname" is not the same file as current file.
/// Fname must have a full path (expanded by path_to_absolute()).
///
/// @param ffname full path name to check
bool otherfile(char_u *ffname)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
{
return otherfile_buf(curbuf, ffname, NULL, false);
}
/// Check that "ffname" is not the same file as the file loaded in "buf".
/// Fname must have a full path (expanded by path_to_absolute()).
///
/// @param buf buffer to check
/// @param ffname full path name to check
/// @param file_id_p information about the file at "ffname".
/// @param file_id_valid whether a valid "file_id_p" was passed in.
static bool otherfile_buf(buf_T *buf, char_u *ffname, FileID *file_id_p,
bool file_id_valid)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
// no name is different
if (ffname == NULL || *ffname == NUL || buf->b_ffname == NULL) {
return true;
}
if (fnamecmp(ffname, buf->b_ffname) == 0) {
return false;
}
{
FileID file_id;
// If no struct stat given, get it now
if (file_id_p == NULL) {
file_id_p = &file_id;
file_id_valid = os_fileid((char *)ffname, file_id_p);
}
if (!file_id_valid) {
// file_id not valid, assume files are different.
return true;
}
// Use dev/ino to check if the files are the same, even when the names
// are different (possible with links). Still need to compare the
// name above, for when the file doesn't exist yet.
// Problem: The dev/ino changes when a file is deleted (and created
// again) and remains the same when renamed/moved. We don't want to
// stat() each buffer each time, that would be too slow. Get the
// dev/ino again when they appear to match, but not when they appear
// to be different: Could skip a buffer when it's actually the same
// file.
if (buf_same_file_id(buf, file_id_p)) {
buf_set_file_id(buf);
if (buf_same_file_id(buf, file_id_p)) {
return false;
}
}
}
return true;
}
// Set file_id for a buffer.
// Must always be called when b_fname is changed!
void buf_set_file_id(buf_T *buf)
{
FileID file_id;
if (buf->b_fname != NULL
&& os_fileid((char *)buf->b_fname, &file_id)) {
buf->file_id_valid = true;
buf->file_id = file_id;
} else {
buf->file_id_valid = false;
}
}
/// Check that file_id in buffer "buf" matches with "file_id".
///
/// @param buf buffer
/// @param file_id file id
static bool buf_same_file_id(buf_T *buf, FileID *file_id)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
{
return buf->file_id_valid && os_fileid_equal(&(buf->file_id), file_id);
}
/*
* Print info about the current buffer.
*/
void
fileinfo(
int fullname, // when non-zero print full path
int shorthelp,
int dont_truncate
)
{
char_u *name;
int n;
char_u *p;
char_u *buffer;
size_t len;
buffer = xmalloc(IOSIZE);
if (fullname > 1) { // 2 CTRL-G: include buffer number
vim_snprintf((char *)buffer, IOSIZE, "buf %d: ", curbuf->b_fnum);
p = buffer + STRLEN(buffer);
} else
p = buffer;
*p++ = '"';
if (buf_spname(curbuf) != NULL) {
STRLCPY(p, buf_spname(curbuf), IOSIZE - (p - buffer));
} else {
if (!fullname && curbuf->b_fname != NULL) {
name = curbuf->b_fname;
} else {
name = curbuf->b_ffname;
}
home_replace(shorthelp ? curbuf : NULL, name, p,
(size_t)(IOSIZE - (p - buffer)), true);
}
vim_snprintf_add((char *)buffer, IOSIZE, "\"%s%s%s%s%s%s",
curbufIsChanged() ? (shortmess(SHM_MOD)
? " [+]" : _(" [Modified]")) : " ",
(curbuf->b_flags & BF_NOTEDITED)
&& !bt_dontwrite(curbuf)
? _("[Not edited]") : "",
(curbuf->b_flags & BF_NEW)
&& !bt_dontwrite(curbuf)
? _("[New file]") : "",
(curbuf->b_flags & BF_READERR) ? _("[Read errors]") : "",
curbuf->b_p_ro ? (shortmess(SHM_RO) ? _("[RO]")
: _("[readonly]")) : "",
(curbufIsChanged() || (curbuf->b_flags & BF_WRITE_MASK)
|| curbuf->b_p_ro) ?
" " : "");
/* With 32 bit longs and more than 21,474,836 lines multiplying by 100
* causes an overflow, thus for large numbers divide instead. */
if (curwin->w_cursor.lnum > 1000000L)
n = (int)(((long)curwin->w_cursor.lnum) /
((long)curbuf->b_ml.ml_line_count / 100L));
else
n = (int)(((long)curwin->w_cursor.lnum * 100L) /
(long)curbuf->b_ml.ml_line_count);
if (curbuf->b_ml.ml_flags & ML_EMPTY) {
vim_snprintf_add((char *)buffer, IOSIZE, "%s", _(no_lines_msg));
} else if (p_ru) {
// Current line and column are already on the screen -- webb
if (curbuf->b_ml.ml_line_count == 1) {
vim_snprintf_add((char *)buffer, IOSIZE, _("1 line --%d%%--"), n);
} else {
vim_snprintf_add((char *)buffer, IOSIZE, _("%" PRId64 " lines --%d%%--"),
(int64_t)curbuf->b_ml.ml_line_count, n);
}
} else {
vim_snprintf_add((char *)buffer, IOSIZE,
_("line %" PRId64 " of %" PRId64 " --%d%%-- col "),
(int64_t)curwin->w_cursor.lnum,
(int64_t)curbuf->b_ml.ml_line_count,
n);
validate_virtcol();
len = STRLEN(buffer);
col_print(buffer + len, IOSIZE - len,
(int)curwin->w_cursor.col + 1, (int)curwin->w_virtcol + 1);
}
(void)append_arg_number(curwin, buffer, IOSIZE, !shortmess(SHM_FILE));
if (dont_truncate) {
/* Temporarily set msg_scroll to avoid the message being truncated.
* First call msg_start() to get the message in the right place. */
msg_start();
n = msg_scroll;
msg_scroll = true;
msg(buffer);
msg_scroll = n;
} else {
p = msg_trunc_attr(buffer, false, 0);
if (restart_edit != 0 || (msg_scrolled && !need_wait_return)) {
// Need to repeat the message after redrawing when:
// - When restart_edit is set (otherwise there will be a delay
// before redrawing).
// - When the screen was scrolled but there is no wait-return
// prompt.
set_keep_msg(p, 0);
}
}
xfree(buffer);
}
void col_print(char_u *buf, size_t buflen, int col, int vcol)
{
if (col == vcol) {
vim_snprintf((char *)buf, buflen, "%d", col);
} else {
vim_snprintf((char *)buf, buflen, "%d-%d", col, vcol);
}
}
static char_u *lasttitle = NULL;
static char_u *lasticon = NULL;
// Put the title name in the title bar and icon of the window.
void maketitle(void)
{
char_u *title_str = NULL;
char_u *icon_str = NULL;
int maxlen = 0;
int len;
int mustset;
char buf[IOSIZE];
if (!redrawing()) {
// Postpone updating the title when 'lazyredraw' is set.
need_maketitle = true;
return;
}
need_maketitle = false;
if (!p_title && !p_icon && lasttitle == NULL && lasticon == NULL) {
return; // nothing to do
}
if (p_title) {
if (p_titlelen > 0) {
maxlen = (int)(p_titlelen * Columns / 100);
if (maxlen < 10) {
maxlen = 10;
}
}
if (*p_titlestring != NUL) {
if (stl_syntax & STL_IN_TITLE) {
int use_sandbox = false;
int save_called_emsg = called_emsg;
use_sandbox = was_set_insecurely((char_u *)"titlestring", 0);
called_emsg = false;
build_stl_str_hl(curwin, (char_u *)buf, sizeof(buf),
p_titlestring, use_sandbox,
0, maxlen, NULL, NULL);
title_str = (char_u *)buf;
if (called_emsg) {
set_string_option_direct((char_u *)"titlestring", -1, (char_u *)"",
OPT_FREE, SID_ERROR);
}
called_emsg |= save_called_emsg;
} else {
title_str = p_titlestring;
}
} else {
// Format: "fname + (path) (1 of 2) - VIM".
#define SPACE_FOR_FNAME (sizeof(buf) - 100)
#define SPACE_FOR_DIR (sizeof(buf) - 20)
#define SPACE_FOR_ARGNR (sizeof(buf) - 10) // At least room for " - NVIM".
char *buf_p = buf;
if (curbuf->b_fname == NULL) {
const size_t size = xstrlcpy(buf_p, _("[No Name]"),
SPACE_FOR_FNAME + 1);
buf_p += MIN(size, SPACE_FOR_FNAME);
} else {
buf_p += transstr_buf((const char *)path_tail(curbuf->b_fname),
buf_p, SPACE_FOR_FNAME + 1);
}
switch (bufIsChanged(curbuf)
| (curbuf->b_p_ro << 1)
| (!MODIFIABLE(curbuf) << 2)) {
case 0: break;
case 1: buf_p = strappend(buf_p, " +"); break;
case 2: buf_p = strappend(buf_p, " ="); break;
case 3: buf_p = strappend(buf_p, " =+"); break;
case 4:
case 6: buf_p = strappend(buf_p, " -"); break;
case 5:
case 7: buf_p = strappend(buf_p, " -+"); break;
default: assert(false);
}
if (curbuf->b_fname != NULL) {
// Get path of file, replace home dir with ~.
*buf_p++ = ' ';
*buf_p++ = '(';
home_replace(curbuf, curbuf->b_ffname, (char_u *)buf_p,
(SPACE_FOR_DIR - (size_t)(buf_p - buf)), true);
#ifdef BACKSLASH_IN_FILENAME
// Avoid "c:/name" to be reduced to "c".
if (isalpha((uint8_t)buf_p) && *(buf_p + 1) == ':') {
buf_p += 2;
}
#endif
// Remove the file name.
char *p = (char *)path_tail_with_sep((char_u *)buf_p);
if (p == buf_p) {
// Must be a help buffer.
xstrlcpy(buf_p, _("help"), SPACE_FOR_DIR - (size_t)(buf_p - buf));
} else {
*p = NUL;
}
// Translate unprintable chars and concatenate. Keep some
// room for the server name. When there is no room (very long
// file name) use (...).
if ((size_t)(buf_p - buf) < SPACE_FOR_DIR) {
char *const tbuf = transstr(buf_p);
const size_t free_space = SPACE_FOR_DIR - (size_t)(buf_p - buf) + 1;
const size_t dir_len = xstrlcpy(buf_p, tbuf, free_space);
buf_p += MIN(dir_len, free_space - 1);
xfree(tbuf);
} else {
const size_t free_space = SPACE_FOR_ARGNR - (size_t)(buf_p - buf) + 1;
const size_t dots_len = xstrlcpy(buf_p, "...", free_space);
buf_p += MIN(dots_len, free_space - 1);
}
*buf_p++ = ')';
*buf_p = NUL;
} else {
*buf_p = NUL;
}
append_arg_number(curwin, (char_u *)buf_p,
(int)(SPACE_FOR_ARGNR - (size_t)(buf_p - buf)), false);
xstrlcat(buf_p, " - NVIM", (sizeof(buf) - (size_t)(buf_p - buf)));
if (maxlen > 0) {
// Make it shorter by removing a bit in the middle.
if (vim_strsize((char_u *)buf) > maxlen) {
trunc_string((char_u *)buf, (char_u *)buf, maxlen, sizeof(buf));
}
}
title_str = (char_u *)buf;
#undef SPACE_FOR_FNAME
#undef SPACE_FOR_DIR
#undef SPACE_FOR_ARGNR
}
}
mustset = value_change(title_str, &lasttitle);
if (p_icon) {
icon_str = (char_u *)buf;
if (*p_iconstring != NUL) {
if (stl_syntax & STL_IN_ICON) {
int use_sandbox = false;
int save_called_emsg = called_emsg;
use_sandbox = was_set_insecurely((char_u *)"iconstring", 0);
called_emsg = false;
build_stl_str_hl(curwin, icon_str, sizeof(buf),
p_iconstring, use_sandbox,
0, 0, NULL, NULL);
if (called_emsg) {
set_string_option_direct((char_u *)"iconstring", -1,
(char_u *)"", OPT_FREE, SID_ERROR);
}
called_emsg |= save_called_emsg;
} else {
icon_str = p_iconstring;
}
} else {
char_u *buf_p;
if (buf_spname(curbuf) != NULL) {
buf_p = buf_spname(curbuf);
} else { // use file name only in icon
buf_p = path_tail(curbuf->b_ffname);
}
*icon_str = NUL;
// Truncate name at 100 bytes.
len = (int)STRLEN(buf_p);
if (len > 100) {
len -= 100;
if (has_mbyte) {
len += (*mb_tail_off)(buf_p, buf_p + len) + 1;
}
buf_p += len;
}
STRCPY(icon_str, buf_p);
trans_characters(icon_str, IOSIZE);
}
}
mustset |= value_change(icon_str, &lasticon);
if (mustset) {
resettitle();
}
}
/// Used for title and icon: Check if "str" differs from "*last". Set "*last"
/// from "str" if it does by freeing the old value of "*last" and duplicating
/// "str".
///
/// @param str desired title string
/// @param[in,out] last current title string
//
/// @return true if resettitle() is to be called.
static bool value_change(char_u *str, char_u **last)
FUNC_ATTR_WARN_UNUSED_RESULT
{
if ((str == NULL) != (*last == NULL)
|| (str != NULL && *last != NULL && STRCMP(str, *last) != 0)) {
xfree(*last);
if (str == NULL) {
*last = NULL;
resettitle();
} else {
*last = vim_strsave(str);
return true;
}
}
return false;
}
/// Set current window title
void resettitle(void)
{
ui_call_set_icon(cstr_as_string((char *)lasticon));
ui_call_set_title(cstr_as_string((char *)lasttitle));
ui_flush();
}
# if defined(EXITFREE)
void free_titles(void)
{
xfree(lasttitle);
xfree(lasticon);
}
# endif
/// Enumeration specifying the valid numeric bases that can
/// be used when printing numbers in the status line.
typedef enum {
kNumBaseDecimal = 10,
kNumBaseHexadecimal = 16
} NumberBase;
/// Build a string from the status line items in "fmt".
/// Return length of string in screen cells.
///
/// Normally works for window "wp", except when working for 'tabline' then it
/// is "curwin".
///
/// Items are drawn interspersed with the text that surrounds it
/// Specials: %-<wid>(xxx%) => group, %= => separation marker, %< => truncation
/// Item: %-<minwid>.<maxwid><itemch> All but <itemch> are optional
///
/// If maxwidth is not zero, the string will be filled at any middle marker
/// or truncated if too long, fillchar is used for all whitespace.
///
/// @param wp The window to build a statusline for
/// @param out The output buffer to write the statusline to
/// Note: This should not be NameBuff
/// @param outlen The length of the output buffer
/// @param fmt The statusline format string
/// @param use_sandbox Use a sandboxed environment when evaluating fmt
/// @param fillchar Character to use when filling empty space in the statusline
/// @param maxwidth The maximum width to make the statusline
/// @param hltab HL attributes (can be NULL)
/// @param tabtab Tab clicks definition (can be NULL).
///
/// @return The final width of the statusline
int build_stl_str_hl(
win_T *wp,
char_u *out,
size_t outlen,
char_u *fmt,
int use_sandbox,
char_u fillchar,
int maxwidth,
struct stl_hlrec *hltab,
StlClickRecord *tabtab
)
{
int groupitems[STL_MAX_ITEM];
struct stl_item {
// Where the item starts in the status line output buffer
char_u *start;
// Function to run for ClickFunc items.
char *cmd;
// The minimum width of the item
int minwid;
// The maximum width of the item
int maxwid;
enum {
Normal,
Empty,
Group,
Separate,
Highlight,
TabPage,
ClickFunc,
Trunc
} type;
} items[STL_MAX_ITEM];
#define TMPLEN 70
char_u tmp[TMPLEN];
char_u *usefmt = fmt;
const int save_must_redraw = must_redraw;
const int save_redr_type = curwin->w_redr_type;
// When the format starts with "%!" then evaluate it as an expression and
// use the result as the actual format string.
if (fmt[0] == '%' && fmt[1] == '!') {
usefmt = eval_to_string_safe(fmt + 2, NULL, use_sandbox);
if (usefmt == NULL) {
usefmt = fmt;
}
}
if (fillchar == 0) {
fillchar = ' ';
} else if (mb_char2len(fillchar) > 1) {
// Can't handle a multi-byte fill character yet.
fillchar = '-';
}
// Get line & check if empty (cursorpos will show "0-1").
char_u *line_ptr = ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, false);
bool empty_line = (*line_ptr == NUL);
// Get the byte value now, in case we need it below. This is more
// efficient than making a copy of the line.
int byteval;
if (wp->w_cursor.col > (colnr_T)STRLEN(line_ptr)) {
byteval = 0;
} else {
byteval = utf_ptr2char(line_ptr + wp->w_cursor.col);
}
int groupdepth = 0;
int curitem = 0;
bool prevchar_isflag = true;
bool prevchar_isitem = false;
// out_p is the current position in the output buffer
char_u *out_p = out;
// out_end_p is the last valid character in the output buffer
// Note: The null termination character must occur here or earlier,
// so any user-visible characters must occur before here.
char_u *out_end_p = (out + outlen) - 1;
// Proceed character by character through the statusline format string
// fmt_p is the current positon in the input buffer
for (char_u *fmt_p = usefmt; *fmt_p; ) {
if (curitem == STL_MAX_ITEM) {
// There are too many items. Add the error code to the statusline
// to give the user a hint about what went wrong.
if (out_p + 5 < out_end_p) {
memmove(out_p, " E541", (size_t)5);
out_p += 5;
}
break;
}
if (*fmt_p != NUL && *fmt_p != '%') {
prevchar_isflag = prevchar_isitem = false;
}
// Copy the formatting verbatim until we reach the end of the string
// or find a formatting item (denoted by `%`)
// or run out of room in our output buffer.
while (*fmt_p != NUL && *fmt_p != '%' && out_p < out_end_p)
*out_p++ = *fmt_p++;
// If we have processed the entire format string or run out of
// room in our output buffer, exit the loop.
if (*fmt_p == NUL || out_p >= out_end_p) {
break;
}
// The rest of this loop will handle a single `%` item.
// Note: We increment here to skip over the `%` character we are currently
// on so we can process the item's contents.
fmt_p++;
// Ignore `%` at the end of the format string
if (*fmt_p == NUL) {
break;
}
// Two `%` in a row is the escape sequence to print a
// single `%` in the output buffer.
if (*fmt_p == '%') {
*out_p++ = *fmt_p++;
prevchar_isflag = prevchar_isitem = false;
continue;
}
// STL_SEPARATE: Separation place between left and right aligned items.
if (*fmt_p == STL_SEPARATE) {
fmt_p++;
// Ignored when we are inside of a grouping
if (groupdepth > 0) {
continue;
}
items[curitem].type = Separate;
items[curitem++].start = out_p;
continue;
}
// STL_TRUNCMARK: Where to begin truncating if the statusline is too long.
if (*fmt_p == STL_TRUNCMARK) {
fmt_p++;
items[curitem].type = Trunc;
items[curitem++].start = out_p;
continue;
}
// The end of a grouping
if (*fmt_p == ')') {
fmt_p++;
// Ignore if we are not actually inside a group currently
if (groupdepth < 1) {
continue;
}
groupdepth--;
// Determine how long the group is.
// Note: We set the current output position to null
// so `vim_strsize` will work.
char_u *t = items[groupitems[groupdepth]].start;
*out_p = NUL;
long group_len = vim_strsize(t);
// If the group contained internal items
// and the group did not have a minimum width,
// and if there were no normal items in the group,
// move the output pointer back to where the group started.
// Note: This erases any non-item characters that were in the group.
// Otherwise there would be no reason to do this step.
if (curitem > groupitems[groupdepth] + 1
&& items[groupitems[groupdepth]].minwid == 0) {
// remove group if all items are empty and highlight group
// doesn't change
int group_start_userhl = 0;
int group_end_userhl = 0;
int n;
for (n = groupitems[groupdepth] - 1; n >= 0; n--) {
if (items[n].type == Highlight) {
group_start_userhl = group_end_userhl = items[n].minwid;
break;
}
}
for (n = groupitems[groupdepth] + 1; n < curitem; n++) {
if (items[n].type == Normal) {
break;
}
if (items[n].type == Highlight) {
group_end_userhl = items[n].minwid;
}
}
if (n == curitem && group_start_userhl == group_end_userhl) {
out_p = t;
group_len = 0;
// do not use the highlighting from the removed group
for (n = groupitems[groupdepth] + 1; n < curitem; n++) {
if (items[n].type == Highlight) {
items[n].type = Empty;
}
}
}
}
// If the group is longer than it is allowed to be
// truncate by removing bytes from the start of the group text.
if (group_len > items[groupitems[groupdepth]].maxwid) {
// { Determine the number of bytes to remove
long n;
if (has_mbyte) {
// Find the first character that should be included.
n = 0;
while (group_len >= items[groupitems[groupdepth]].maxwid) {
group_len -= ptr2cells(t + n);
n += (*mb_ptr2len)(t + n);
}
} else {
n = (long)(out_p - t) - items[groupitems[groupdepth]].maxwid + 1;
}
// }
// Prepend the `<` to indicate that the output was truncated.
*t = '<';
// { Move the truncated output
memmove(t + 1, t + n, (size_t)(out_p - (t + n)));
out_p = out_p - n + 1;
// Fill up space left over by half a double-wide char.
while (++group_len < items[groupitems[groupdepth]].minwid) {
*out_p++ = fillchar;
}
// }
// correct the start of the items for the truncation
for (int idx = groupitems[groupdepth] + 1; idx < curitem; idx++) {
// Shift everything back by the number of removed bytes
items[idx].start -= n;
// If the item was partially or completely truncated, set its
// start to the start of the group
if (items[idx].start < t) {
items[idx].start = t;
}
}
// If the group is shorter than the minimum width, add padding characters.
} else if (abs(items[groupitems[groupdepth]].minwid) > group_len) {
long min_group_width = items[groupitems[groupdepth]].minwid;
// If the group is left-aligned, add characters to the right.
if (min_group_width < 0) {
min_group_width = 0 - min_group_width;
while (group_len++ < min_group_width && out_p < out_end_p)
*out_p++ = fillchar;
// If the group is right-aligned, shift everything to the right and
// prepend with filler characters.
} else {
// { Move the group to the right
memmove(t + min_group_width - group_len, t, (size_t)(out_p - t));
group_len = min_group_width - group_len;
if (out_p + group_len >= (out_end_p + 1)) {
group_len = (long)(out_end_p - out_p);
}
out_p += group_len;
// }
// Adjust item start positions
for (int n = groupitems[groupdepth] + 1; n < curitem; n++) {
items[n].start += group_len;
}
// Prepend the fill characters
for (; group_len > 0; group_len--) {
*t++ = fillchar;
}
}
}
continue;
}
int minwid = 0;
int maxwid = 9999;
bool left_align = false;
// Denotes that numbers should be left-padded with zeros
bool zeropad = (*fmt_p == '0');
if (zeropad) {
fmt_p++;
}
// Denotes that the item should be left-aligned.
// This is tracked by using a negative length.
if (*fmt_p == '-') {
fmt_p++;
left_align = true;
}
// The first digit group is the item's min width
if (ascii_isdigit(*fmt_p)) {
minwid = getdigits_int(&fmt_p, false, 0);
}
// User highlight groups override the min width field
// to denote the styling to use.
if (*fmt_p == STL_USER_HL) {
items[curitem].type = Highlight;
items[curitem].start = out_p;
items[curitem].minwid = minwid > 9 ? 1 : minwid;
fmt_p++;
curitem++;
continue;
}
// TABPAGE pairs are used to denote a region that when clicked will
// either switch to or close a tab.
//
// Ex: tabline=%0Ttab\ zero%X
// This tabline has a TABPAGENR item with minwid `0`,
// which is then closed with a TABCLOSENR item.
// Clicking on this region with mouse enabled will switch to tab 0.
// Setting the minwid to a different value will switch
// to that tab, if it exists
//
// Ex: tabline=%1Xtab\ one%X
// This tabline has a TABCLOSENR item with minwid `1`,
// which is then closed with a TABCLOSENR item.
// Clicking on this region with mouse enabled will close tab 0.
// This is determined by the following formula:
// tab to close = (1 - minwid)
// This is because for TABPAGENR we use `minwid` = `tab number`.
// For TABCLOSENR we store the tab number as a negative value.
// Because 0 is a valid TABPAGENR value, we have to
// start our numbering at `-1`.
// So, `-1` corresponds to us wanting to close tab `0`
//
// Note: These options are only valid when creating a tabline.
if (*fmt_p == STL_TABPAGENR || *fmt_p == STL_TABCLOSENR) {
if (*fmt_p == STL_TABCLOSENR) {
if (minwid == 0) {
// %X ends the close label, go back to the previous tab label nr.
for (long n = curitem - 1; n >= 0; n--) {
if (items[n].type == TabPage && items[n].minwid >= 0) {
minwid = items[n].minwid;
break;
}
}
} else {
// close nrs are stored as negative values
minwid = -minwid;
}
}
items[curitem].type = TabPage;
items[curitem].start = out_p;
items[curitem].minwid = minwid;
fmt_p++;
curitem++;
continue;
}
if (*fmt_p == STL_CLICK_FUNC) {
fmt_p++;
char *t = (char *) fmt_p;
while (*fmt_p != STL_CLICK_FUNC && *fmt_p) {
fmt_p++;
}
if (*fmt_p != STL_CLICK_FUNC) {
break;
}
items[curitem].type = ClickFunc;
items[curitem].start = out_p;
items[curitem].cmd = xmemdupz(t, (size_t)(((char *)fmt_p - t)));
items[curitem].minwid = minwid;
fmt_p++;
curitem++;
continue;
}
// Denotes the end of the minwid
// the maxwid may follow immediately after
if (*fmt_p == '.') {
fmt_p++;
if (ascii_isdigit(*fmt_p)) {
maxwid = getdigits_int(&fmt_p, false, 50);
}
}
// Bound the minimum width at 50.
// Make the number negative to denote left alignment of the item
minwid = (minwid > 50 ? 50 : minwid) * (left_align ? -1 : 1);
// Denotes the start of a new group
if (*fmt_p == '(') {
groupitems[groupdepth++] = curitem;
items[curitem].type = Group;
items[curitem].start = out_p;
items[curitem].minwid = minwid;
items[curitem].maxwid = maxwid;
fmt_p++;
curitem++;
continue;
}
// An invalid item was specified.
// Continue processing on the next character of the format string.
if (vim_strchr(STL_ALL, *fmt_p) == NULL) {
fmt_p++;
continue;
}
// The status line item type
char_u opt = *fmt_p++;
// OK - now for the real work
NumberBase base = kNumBaseDecimal;
bool itemisflag = false;
bool fillable = true;
long num = -1;
char_u *str = NULL;
switch (opt) {
case STL_FILEPATH:
case STL_FULLPATH:
case STL_FILENAME:
{
// Set fillable to false so that ' ' in the filename will not
// get replaced with the fillchar
fillable = false;
if (buf_spname(wp->w_buffer) != NULL) {
STRLCPY(NameBuff, buf_spname(wp->w_buffer), MAXPATHL);
} else {
char_u *t = (opt == STL_FULLPATH) ? wp->w_buffer->b_ffname
: wp->w_buffer->b_fname;
home_replace(wp->w_buffer, t, NameBuff, MAXPATHL, true);
}
trans_characters(NameBuff, MAXPATHL);
if (opt != STL_FILENAME) {
str = NameBuff;
} else {
str = path_tail(NameBuff);
}
break;
}
case STL_VIM_EXPR: // '{'
{
itemisflag = true;
// Attempt to copy the expression to evaluate into
// the output buffer as a null-terminated string.
char_u *t = out_p;
while (*fmt_p != '}' && *fmt_p != NUL && out_p < out_end_p)
*out_p++ = *fmt_p++;
if (*fmt_p != '}') { // missing '}' or out of space
break;
}
fmt_p++;
*out_p = 0;
// Move our position in the output buffer
// to the beginning of the expression
out_p = t;
// { Evaluate the expression
// Store the current buffer number as a string variable
vim_snprintf((char *)tmp, sizeof(tmp), "%d", curbuf->b_fnum);
set_internal_string_var((char_u *)"g:actual_curbuf", tmp);
buf_T *const save_curbuf = curbuf;
win_T *const save_curwin = curwin;
const int save_VIsual_active = VIsual_active;
curwin = wp;
curbuf = wp->w_buffer;
// Visual mode is only valid in the current window.
if (curwin != save_curwin) {
VIsual_active = false;
}
// Note: The result stored in `t` is unused.
str = eval_to_string_safe(out_p, &t, use_sandbox);
curwin = save_curwin;
curbuf = save_curbuf;
VIsual_active = save_VIsual_active;
// Remove the variable we just stored
do_unlet(S_LEN("g:actual_curbuf"), true);
// }
// Check if the evaluated result is a number.
// If so, convert the number to an int and free the string.
if (str != NULL && *str != 0) {
if (*skipdigits(str) == NUL) {
num = atoi((char *)str);
XFREE_CLEAR(str);
itemisflag = false;
}
}
break;
}
case STL_LINE:
num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
? 0L : (long)(wp->w_cursor.lnum);
break;
case STL_NUMLINES:
num = wp->w_buffer->b_ml.ml_line_count;
break;
case STL_COLUMN:
num = !(State & INSERT) && empty_line
? 0 : (int)wp->w_cursor.col + 1;
break;
case STL_VIRTCOL:
case STL_VIRTCOL_ALT:
{
// In list mode virtcol needs to be recomputed
colnr_T virtcol = wp->w_virtcol;
if (wp->w_p_list && wp->w_p_lcs_chars.tab1 == NUL) {
wp->w_p_list = false;
getvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
wp->w_p_list = true;
}
virtcol++;
// Don't display %V if it's the same as %c.
if (opt == STL_VIRTCOL_ALT
&& (virtcol == (colnr_T)(!(State & INSERT) && empty_line
? 0 : (int)wp->w_cursor.col + 1)))
break;
num = (long)virtcol;
break;
}
case STL_PERCENTAGE:
num = (int)(((long)wp->w_cursor.lnum * 100L) /
(long)wp->w_buffer->b_ml.ml_line_count);
break;
case STL_ALTPERCENT:
// Store the position percentage in our temporary buffer.
// Note: We cannot store the value in `num` because
// `get_rel_pos` can return a named position. Ex: "Top"
get_rel_pos(wp, tmp, TMPLEN);
str = tmp;
break;
case STL_ARGLISTSTAT:
fillable = false;
// Note: This is important because `append_arg_number` starts appending
// at the end of the null-terminated string.
// Setting the first byte to null means it will place the argument
// number string at the beginning of the buffer.
tmp[0] = 0;
// Note: The call will only return true if it actually
// appended data to the `tmp` buffer.
if (append_arg_number(wp, tmp, (int)sizeof(tmp), false)) {
str = tmp;
}
break;
case STL_KEYMAP:
fillable = false;
if (get_keymap_str(wp, (char_u *)"<%s>", tmp, TMPLEN)) {
str = tmp;
}
break;
case STL_PAGENUM:
num = printer_page_num;
break;
case STL_BUFNO:
num = wp->w_buffer->b_fnum;
break;
case STL_OFFSET_X:
base = kNumBaseHexadecimal;
FALLTHROUGH;
case STL_OFFSET:
{
long l = ml_find_line_or_offset(wp->w_buffer, wp->w_cursor.lnum, NULL,
false);
num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY) || l < 0 ?
0L : l + 1 + (!(State & INSERT) && empty_line ?
0 : (int)wp->w_cursor.col);
break;
}
case STL_BYTEVAL_X:
base = kNumBaseHexadecimal;
FALLTHROUGH;
case STL_BYTEVAL:
num = byteval;
if (num == NL) {
num = 0;
} else if (num == CAR && get_fileformat(wp->w_buffer) == EOL_MAC) {
num = NL;
}
break;
case STL_ROFLAG:
case STL_ROFLAG_ALT:
itemisflag = true;
if (wp->w_buffer->b_p_ro) {
str = (char_u *)((opt == STL_ROFLAG_ALT) ? ",RO" : _("[RO]"));
}
break;
case STL_HELPFLAG:
case STL_HELPFLAG_ALT:
itemisflag = true;
if (wp->w_buffer->b_help)
str = (char_u *)((opt == STL_HELPFLAG_ALT) ? ",HLP"
: _("[Help]"));
break;
case STL_FILETYPE:
// Copy the filetype if it is not null and the formatted string will fit
// in the temporary buffer
// (including the brackets and null terminating character)
if (*wp->w_buffer->b_p_ft != NUL
&& STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 3) {
vim_snprintf((char *)tmp, sizeof(tmp), "[%s]",
wp->w_buffer->b_p_ft);
str = tmp;
}
break;
case STL_FILETYPE_ALT:
{
itemisflag = true;
// Copy the filetype if it is not null and the formatted string will fit
// in the temporary buffer
// (including the comma and null terminating character)
if (*wp->w_buffer->b_p_ft != NUL
&& STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 2) {
vim_snprintf((char *)tmp, sizeof(tmp), ",%s",
wp->w_buffer->b_p_ft);
// Uppercase the file extension
for (char_u *t = tmp; *t != 0; t++) {
*t = (char_u)TOUPPER_LOC(*t);
}
str = tmp;
}
break;
}
case STL_PREVIEWFLAG:
case STL_PREVIEWFLAG_ALT:
itemisflag = true;
if (wp->w_p_pvw)
str = (char_u *)((opt == STL_PREVIEWFLAG_ALT) ? ",PRV"
: _("[Preview]"));
break;
case STL_QUICKFIX:
if (bt_quickfix(wp->w_buffer))
str = (char_u *)(wp->w_llist_ref
? _(msg_loclist)
: _(msg_qflist));
break;
case STL_MODIFIED:
case STL_MODIFIED_ALT:
itemisflag = true;
switch ((opt == STL_MODIFIED_ALT)
+ bufIsChanged(wp->w_buffer) * 2
+ (!MODIFIABLE(wp->w_buffer)) * 4) {
case 2: str = (char_u *)"[+]"; break;
case 3: str = (char_u *)",+"; break;
case 4: str = (char_u *)"[-]"; break;
case 5: str = (char_u *)",-"; break;
case 6: str = (char_u *)"[+-]"; break;
case 7: str = (char_u *)",+-"; break;
}
break;
case STL_HIGHLIGHT:
{
// { The name of the highlight is surrounded by `#`
char_u *t = fmt_p;
while (*fmt_p != '#' && *fmt_p != NUL) {
fmt_p++;
}
// }
// Create a highlight item based on the name
if (*fmt_p == '#') {
items[curitem].type = Highlight;
items[curitem].start = out_p;
items[curitem].minwid = -syn_namen2id(t, (int)(fmt_p - t));
curitem++;
fmt_p++;
}
continue;
}
}
// If we made it this far, the item is normal and starts at
// our current position in the output buffer.
// Non-normal items would have `continued`.
items[curitem].start = out_p;
items[curitem].type = Normal;
// Copy the item string into the output buffer
if (str != NULL && *str) {
// { Skip the leading `,` or ` ` if the item is a flag
// and the proper conditions are met
char_u *t = str;
if (itemisflag) {
if ((t[0] && t[1])
&& ((!prevchar_isitem && *t == ',')
|| (prevchar_isflag && *t == ' ')))
t++;
prevchar_isflag = true;
}
// }
long l = vim_strsize(t);
// If this item is non-empty, record that the last thing
// we put in the output buffer was an item
if (l > 0) {
prevchar_isitem = true;
}
// If the item is too wide, truncate it from the beginning
if (l > maxwid) {
while (l >= maxwid)
if (has_mbyte) {
l -= ptr2cells(t);
t += (*mb_ptr2len)(t);
} else {
l -= byte2cells(*t++);
}
// Early out if there isn't enough room for the truncation marker
if (out_p >= out_end_p) {
break;
}
// Add the truncation marker
*out_p++ = '<';
}
// If the item is right aligned and not wide enough,
// pad with fill characters.
if (minwid > 0) {
for (; l < minwid && out_p < out_end_p; l++) {
// Don't put a "-" in front of a digit.
if (l + 1 == minwid && fillchar == '-' && ascii_isdigit(*t)) {
*out_p++ = ' ';
} else {
*out_p++ = fillchar;
}
}
minwid = 0;
} else {
// Note: The negative value denotes a left aligned item.
// Here we switch the minimum width back to a positive value.
minwid *= -1;
}
// { Copy the string text into the output buffer
while (*t && out_p < out_end_p) {
*out_p++ = *t++;
// Change a space by fillchar, unless fillchar is '-' and a
// digit follows.
if (fillable && out_p[-1] == ' '
&& (!ascii_isdigit(*t) || fillchar != '-'))
out_p[-1] = fillchar;
}
// }
// For left-aligned items, fill any remaining space with the fillchar
for (; l < minwid && out_p < out_end_p; l++) {
*out_p++ = fillchar;
}
// Otherwise if the item is a number, copy that to the output buffer.
} else if (num >= 0) {
if (out_p + 20 > out_end_p) {
break; // not sufficient space
}
prevchar_isitem = true;
// { Build the formatting string
char_u nstr[20];
char_u *t = nstr;
if (opt == STL_VIRTCOL_ALT) {
*t++ = '-';
minwid--;
}
*t++ = '%';
if (zeropad) {
*t++ = '0';
}
// Note: The `*` means we take the width as one of the arguments
*t++ = '*';
*t++ = (char_u)(base == kNumBaseHexadecimal ? 'X' : 'd');
*t = 0;
// }
// { Determine how many characters the number will take up when printed
// Note: We have to cast the base because the compiler uses
// unsigned ints for the enum values.
long num_chars = 1;
for (long n = num; n >= (int) base; n /= (int) base) {
num_chars++;
}
// VIRTCOL_ALT takes up an extra character because
// of the `-` we added above.
if (opt == STL_VIRTCOL_ALT) {
num_chars++;
}
// }
assert(out_end_p >= out_p);
size_t remaining_buf_len = (size_t)(out_end_p - out_p) + 1;
// If the number is going to take up too much room
// Figure out the approximate number in "scientific" type notation.
// Ex: 14532 with maxwid of 4 -> '14>3'
if (num_chars > maxwid) {
// Add two to the width because the power piece will take
// two extra characters
num_chars += 2;
// How many extra characters there are
long n = num_chars - maxwid;
// { Reduce the number by base^n
while (num_chars-- > maxwid) {
num /= (long)base;
}
// }
// { Add the format string for the exponent bit
*t++ = '>';
*t++ = '%';
// Use the same base as the first number
*t = t[-3];
*++t = 0;
// }
vim_snprintf((char *)out_p, remaining_buf_len, (char *)nstr,
0, num, n);
} else {
vim_snprintf((char *)out_p, remaining_buf_len, (char *)nstr,
minwid, num);
}
// Advance the output buffer position to the end of the
// number we just printed
out_p += STRLEN(out_p);
// Otherwise, there was nothing to print so mark the item as empty
} else {
items[curitem].type = Empty;
}
// Only free the string buffer if we allocated it.
// Note: This is not needed if `str` is pointing at `tmp`
if (opt == STL_VIM_EXPR) {
xfree(str);
}
if (num >= 0 || (!itemisflag && str && *str)) {
prevchar_isflag = false; // Item not NULL, but not a flag
}
// Item processed, move to the next
curitem++;
}
*out_p = NUL;
int itemcnt = curitem;
// Free the format buffer if we allocated it internally
if (usefmt != fmt) {
xfree(usefmt);
}
// We have now processed the entire statusline format string.
// What follows is post-processing to handle alignment and highlighting.
int width = vim_strsize(out);
if (maxwidth > 0 && width > maxwidth) {
// Result is too long, must truncate somewhere.
int item_idx = 0;
char_u *trunc_p;
// If there are no items, truncate from beginning
if (itemcnt == 0) {
trunc_p = out;
// Otherwise, look for the truncation item
} else {
// Default to truncating at the first item
trunc_p = items[0].start;
item_idx = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Trunc) {
// Truncate at %< items.
trunc_p = items[i].start;
item_idx = i;
break;
}
}
}
// If the truncation point we found is beyond the maximum
// length of the string, truncate the end of the string.
if (width - vim_strsize(trunc_p) >= maxwidth) {
// If we are using a multi-byte encoding, walk from the beginning of the
// string to find the last character that will fit.
if (has_mbyte) {
trunc_p = out;
width = 0;
for (;; ) {
width += ptr2cells(trunc_p);
if (width >= maxwidth) {
break;
}
// Note: Only advance the pointer if the next
// character will fit in the available output space
trunc_p += (*mb_ptr2len)(trunc_p);
}
// Otherwise put the truncation point at the end, leaving enough room
// for a single-character truncation marker
} else {
trunc_p = out + maxwidth - 1;
}
// Ignore any items in the statusline that occur after
// the truncation point
for (int i = 0; i < itemcnt; i++) {
if (items[i].start > trunc_p) {
itemcnt = i;
break;
}
}
// Truncate the output
*trunc_p++ = '>';
*trunc_p = 0;
// Truncate at the truncation point we found
} else {
// { Determine how many bytes to remove
long trunc_len;
if (has_mbyte) {
trunc_len = 0;
while (width >= maxwidth) {
width -= ptr2cells(trunc_p + trunc_len);
trunc_len += (*mb_ptr2len)(trunc_p + trunc_len);
}
} else {
// Truncate an extra character so we can insert our `<`.
trunc_len = (width - maxwidth) + 1;
}
// }
// { Truncate the string
char_u *trunc_end_p = trunc_p + trunc_len;
STRMOVE(trunc_p + 1, trunc_end_p);
// Put a `<` to mark where we truncated at
*trunc_p = '<';
if (width + 1 < maxwidth) {
// Advance the pointer to the end of the string
trunc_p = trunc_p + STRLEN(trunc_p);
}
// Fill up for half a double-wide character.
while (++width < maxwidth) {
*trunc_p++ = fillchar;
*trunc_p = NUL;
}
// }
// { Change the start point for items based on
// their position relative to our truncation point
// Note: The offset is one less than the truncation length because
// the truncation marker `<` is not counted.
long item_offset = trunc_len - 1;
for (int i = item_idx; i < itemcnt; i++) {
// Items starting at or after the end of the truncated section need
// to be moved backwards.
if (items[i].start >= trunc_end_p) {
items[i].start -= item_offset;
// Anything inside the truncated area is set to start
// at the `<` truncation character.
} else {
items[i].start = trunc_p;
}
}
// }
}
width = maxwidth;
// If there is room left in our statusline, and room left in our buffer,
// add characters at the separate marker (if there is one) to
// fill up the available space.
} else if (width < maxwidth
&& STRLEN(out) + (size_t)(maxwidth - width) + 1 < outlen) {
// Find how many separators there are, which we will use when
// figuring out how many groups there are.
int num_separators = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Separate) {
num_separators++;
}
}
// If we have separated groups, then we deal with it now
if (num_separators) {
// Create an array of the start location for each
// separator mark.
int separator_locations[STL_MAX_ITEM];
int index = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Separate) {
separator_locations[index] = i;
index++;
}
}
int standard_spaces = (maxwidth - width) / num_separators;
int final_spaces = (maxwidth - width) -
standard_spaces * (num_separators - 1);
for (int i = 0; i < num_separators; i++) {
int dislocation = (i == (num_separators - 1))
? final_spaces : standard_spaces;
char_u *seploc = items[separator_locations[i]].start + dislocation;
STRMOVE(seploc, items[separator_locations[i]].start);
for (char_u *s = items[separator_locations[i]].start; s < seploc; s++) {
*s = fillchar;
}
for (int item_idx = separator_locations[i] + 1;
item_idx < itemcnt;
item_idx++) {
items[item_idx].start += dislocation;
}
}
width = maxwidth;
}
}
// Store the info about highlighting.
if (hltab != NULL) {
struct stl_hlrec *sp = hltab;
for (long l = 0; l < itemcnt; l++) {
if (items[l].type == Highlight) {
sp->start = items[l].start;
sp->userhl = items[l].minwid;
sp++;
}
}
sp->start = NULL;
sp->userhl = 0;
}
// Store the info about tab pages labels.
if (tabtab != NULL) {
StlClickRecord *cur_tab_rec = tabtab;
for (long l = 0; l < itemcnt; l++) {
if (items[l].type == TabPage) {
cur_tab_rec->start = (char *)items[l].start;
if (items[l].minwid == 0) {
cur_tab_rec->def.type = kStlClickDisabled;
cur_tab_rec->def.tabnr = 0;
} else {
int tabnr = items[l].minwid;
if (items[l].minwid > 0) {
cur_tab_rec->def.type = kStlClickTabSwitch;
} else {
cur_tab_rec->def.type = kStlClickTabClose;
tabnr = -tabnr;
}
cur_tab_rec->def.tabnr = tabnr;
}
cur_tab_rec->def.func = NULL;
cur_tab_rec++;
} else if (items[l].type == ClickFunc) {
cur_tab_rec->start = (char *)items[l].start;
cur_tab_rec->def.type = kStlClickFuncRun;
cur_tab_rec->def.tabnr = items[l].minwid;
cur_tab_rec->def.func = items[l].cmd;
cur_tab_rec++;
}
}
cur_tab_rec->start = NULL;
cur_tab_rec->def.type = kStlClickDisabled;
cur_tab_rec->def.tabnr = 0;
cur_tab_rec->def.func = NULL;
}
// When inside update_screen we do not want redrawing a stausline, ruler,
// title, etc. to trigger another redraw, it may cause an endless loop.
if (updating_screen) {
must_redraw = save_must_redraw;
curwin->w_redr_type = save_redr_type;
}
return width;
}
/*
* Get relative cursor position in window into "buf[buflen]", in the form 99%,
* using "Top", "Bot" or "All" when appropriate.
*/
void get_rel_pos(win_T *wp, char_u *buf, int buflen)
{
// Need at least 3 chars for writing.
if (buflen < 3) {
return;
}
long above; // number of lines above window
long below; // number of lines below window
above = wp->w_topline - 1;
above += diff_check_fill(wp, wp->w_topline) - wp->w_topfill;
if (wp->w_topline == 1 && wp->w_topfill >= 1) {
// All buffer lines are displayed and there is an indication
// of filler lines, that can be considered seeing all lines.
above = 0;
}
below = wp->w_buffer->b_ml.ml_line_count - wp->w_botline + 1;
if (below <= 0) {
STRLCPY(buf, (above == 0 ? _("All") : _("Bot")), buflen);
} else if (above <= 0) {
STRLCPY(buf, _("Top"), buflen);
} else {
vim_snprintf((char *)buf, (size_t)buflen, "%2d%%", above > 1000000L
? (int)(above / ((above + below) / 100L))
: (int)(above * 100L / (above + below)));
}
}
/// Append (file 2 of 8) to "buf[buflen]", if editing more than one file.
///
/// @param wp window whose buffers to check
/// @param[in,out] buf string buffer to add the text to
/// @param buflen length of the string buffer
/// @param add_file if true, add "file" before the arg number
///
/// @return true if it was appended.
static bool append_arg_number(win_T *wp, char_u *buf, int buflen, bool add_file)
FUNC_ATTR_NONNULL_ALL
{
// Nothing to do
if (ARGCOUNT <= 1) {
return false;
}
char_u *p = buf + STRLEN(buf); // go to the end of the buffer
// Early out if the string is getting too long
if (p - buf + 35 >= buflen) {
return false;
}
*p++ = ' ';
*p++ = '(';
if (add_file) {
STRCPY(p, "file ");
p += 5;
}
vim_snprintf((char *)p, (size_t)(buflen - (p - buf)),
wp->w_arg_idx_invalid
? "(%d) of %d)"
: "%d of %d)", wp->w_arg_idx + 1, ARGCOUNT);
return true;
}
/*
* 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(buf_T *buf, 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 = (char_u *)fix_fname((char *)(*ffname)); // expand to full path
#ifdef WIN32
if (!buf->b_p_bin) {
// If the file name is a shortcut file, use the file it links to.
char *rfname = os_resolve_shortcut((const char *)(*ffname));
if (rfname != NULL) {
xfree(*ffname);
*ffname = (char_u *)rfname;
*sfname = (char_u *)rfname;
}
}
#endif
}
/*
* Get the file name for an argument list entry.
*/
char_u *alist_name(aentry_T *aep)
{
buf_T *bp;
// Use the name from the associated buffer if it exists.
bp = buflist_findnr(aep->ae_fnum);
if (bp == NULL || bp->b_fname == NULL) {
return aep->ae_fname;
}
return bp->b_fname;
}
/*
* do_arg_all(): Open up to 'count' windows, one for each argument.
*/
void
do_arg_all(
int count,
int forceit, // hide buffers in current windows
int keep_tabs // keep current tabs, for ":tab drop file"
)
{
int i;
char_u *opened; // Array of weight for which args are open:
// 0: not opened
// 1: opened in other tab
// 2: opened in curtab
// 3: opened in curtab and curwin
int opened_len; // length of opened[]
int use_firstwin = false; // use first window for arglist
int split_ret = OK;
bool p_ea_save;
alist_T *alist; // argument list to be used
buf_T *buf;
tabpage_T *tpnext;
int had_tab = cmdmod.tab;
win_T *old_curwin, *last_curwin;
tabpage_T *old_curtab, *last_curtab;
win_T *new_curwin = NULL;
tabpage_T *new_curtab = NULL;
assert(firstwin != NULL); // satisfy coverity
if (ARGCOUNT <= 0) {
/* Don't give an error message. We don't want it when the ":all"
* command is in the .vimrc. */
return;
}
setpcmark();
opened_len = ARGCOUNT;
opened = xcalloc((size_t)opened_len, 1);
/* Autocommands may do anything to the argument list. Make sure it's not
* freed while we are working here by "locking" it. We still have to
* watch out for its size to be changed. */
alist = curwin->w_alist;
alist->al_refcount++;
old_curwin = curwin;
old_curtab = curtab;
/*
* Try closing all windows that are not in the argument list.
* Also close windows that are not full width;
* When 'hidden' or "forceit" set the buffer becomes hidden.
* Windows that have a changed buffer and can't be hidden won't be closed.
* When the ":tab" modifier was used do this for all tab pages.
*/
if (had_tab > 0) {
goto_tabpage_tp(first_tabpage, true, true);
}
for (;; ) {
win_T *wpnext = NULL;
tpnext = curtab->tp_next;
for (win_T *wp = firstwin; wp != NULL; wp = wpnext) {
wpnext = wp->w_next;
buf = wp->w_buffer;
if (buf->b_ffname == NULL
|| (!keep_tabs && (buf->b_nwindows > 1 || wp->w_width != Columns))) {
i = opened_len;
} else {
// check if the buffer in this window is in the arglist
for (i = 0; i < opened_len; i++) {
if (i < alist->al_ga.ga_len
&& (AARGLIST(alist)[i].ae_fnum == buf->b_fnum
|| path_full_compare(alist_name(&AARGLIST(alist)[i]),
buf->b_ffname,
true, true) & kEqualFiles)) {
int weight = 1;
if (old_curtab == curtab) {
weight++;
if (old_curwin == wp) {
weight++;
}
}
if (weight > (int)opened[i]) {
opened[i] = (char_u)weight;
if (i == 0) {
if (new_curwin != NULL) {
new_curwin->w_arg_idx = opened_len;
}
new_curwin = wp;
new_curtab = curtab;
}
} else if (keep_tabs) {
i = opened_len;
}
if (wp->w_alist != alist) {
/* Use the current argument list for all windows
* containing a file from it. */
alist_unlink(wp->w_alist);
wp->w_alist = alist;
wp->w_alist->al_refcount++;
}
break;
}
}
}
wp->w_arg_idx = i;
if (i == opened_len && !keep_tabs) { // close this window
if (buf_hide(buf) || forceit || buf->b_nwindows > 1
|| !bufIsChanged(buf)) {
/* If the buffer was changed, and we would like to hide it,
* try autowriting. */
if (!buf_hide(buf) && buf->b_nwindows <= 1 && bufIsChanged(buf)) {
bufref_T bufref;
set_bufref(&bufref, buf);
(void)autowrite(buf, false);
// Check if autocommands removed the window.
if (!win_valid(wp) || !bufref_valid(&bufref)) {
wpnext = firstwin; // Start all over...
continue;
}
}
// don't close last window
if (ONE_WINDOW
&& (first_tabpage->tp_next == NULL || !had_tab)) {
use_firstwin = true;
} else {
win_close(wp, !buf_hide(buf) && !bufIsChanged(buf));
// check if autocommands removed the next window
if (!win_valid(wpnext)) {
// start all over...
wpnext = firstwin;
}
}
}
}
}
// Without the ":tab" modifier only do the current tab page.
if (had_tab == 0 || tpnext == NULL) {
break;
}
// check if autocommands removed the next tab page
if (!valid_tabpage(tpnext)) {
tpnext = first_tabpage; // start all over...
}
goto_tabpage_tp(tpnext, true, true);
}
/*
* Open a window for files in the argument list that don't have one.
* ARGCOUNT may change while doing this, because of autocommands.
*/
if (count > opened_len || count <= 0) {
count = opened_len;
}
// Don't execute Win/Buf Enter/Leave autocommands here.
autocmd_no_enter++;
autocmd_no_leave++;
last_curwin = curwin;
last_curtab = curtab;
win_enter(lastwin, false);
// ":drop all" should re-use an empty window to avoid "--remote-tab"
// leaving an empty tab page when executed locally.
if (keep_tabs && BUFEMPTY() && curbuf->b_nwindows == 1
&& curbuf->b_ffname == NULL && !curbuf->b_changed) {
use_firstwin = true;
}
for (i = 0; i < count && i < opened_len && !got_int; i++) {
if (alist == &global_alist && i == global_alist.al_ga.ga_len - 1) {
arg_had_last = true;
}
if (opened[i] > 0) {
// Move the already present window to below the current window
if (curwin->w_arg_idx != i) {
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_arg_idx == i) {
if (keep_tabs) {
new_curwin = wp;
new_curtab = curtab;
} else {
win_move_after(wp, curwin);
}
break;
}
}
}
} else if (split_ret == OK) {
if (!use_firstwin) { // split current window
p_ea_save = p_ea;
p_ea = true; // use space from all windows
split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
p_ea = p_ea_save;
if (split_ret == FAIL) {
continue;
}
} else { // first window: do autocmd for leaving this buffer
autocmd_no_leave--;
}
/*
* edit file "i"
*/
curwin->w_arg_idx = i;
if (i == 0) {
new_curwin = curwin;
new_curtab = curtab;
}
(void)do_ecmd(0, alist_name(&AARGLIST(alist)[i]), NULL, NULL, ECMD_ONE,
((buf_hide(curwin->w_buffer)
|| bufIsChanged(curwin->w_buffer))
? ECMD_HIDE : 0) + ECMD_OLDBUF,
curwin);
if (use_firstwin) {
autocmd_no_leave++;
}
use_firstwin = false;
}
os_breakcheck();
// When ":tab" was used open a new tab for a new window repeatedly.
if (had_tab > 0 && tabpage_index(NULL) <= p_tpm) {
cmdmod.tab = 9999;
}
}
// Remove the "lock" on the argument list.
alist_unlink(alist);
autocmd_no_enter--;
// restore last referenced tabpage's curwin
if (last_curtab != new_curtab) {
if (valid_tabpage(last_curtab)) {
goto_tabpage_tp(last_curtab, true, true);
}
if (win_valid(last_curwin)) {
win_enter(last_curwin, false);
}
}
// to window with first arg
if (valid_tabpage(new_curtab)) {
goto_tabpage_tp(new_curtab, true, true);
}
if (win_valid(new_curwin)) {
win_enter(new_curwin, false);
}
autocmd_no_leave--;
xfree(opened);
}
// Return TRUE if "buf" is a prompt buffer.
int bt_prompt(buf_T *buf)
{
return buf != NULL && buf->b_p_bt[0] == 'p';
}
/*
* Open a window for a number of buffers.
*/
void ex_buffer_all(exarg_T *eap)
{
buf_T *buf;
win_T *wp, *wpnext;
int split_ret = OK;
bool p_ea_save;
int open_wins = 0;
int r;
long count; // Maximum number of windows to open.
int all; // When true also load inactive buffers.
int had_tab = cmdmod.tab;
tabpage_T *tpnext;
if (eap->addr_count == 0) { // make as many windows as possible
count = 9999;
} else {
count = eap->line2; // make as many windows as specified
}
if (eap->cmdidx == CMD_unhide || eap->cmdidx == CMD_sunhide) {
all = false;
} else {
all = true;
}
setpcmark();
/*
* Close superfluous windows (two windows for the same buffer).
* Also close windows that are not full-width.
*/
if (had_tab > 0) {
goto_tabpage_tp(first_tabpage, true, true);
}
for (;; ) {
tpnext = curtab->tp_next;
for (wp = firstwin; wp != NULL; wp = wpnext) {
wpnext = wp->w_next;
if ((wp->w_buffer->b_nwindows > 1
|| ((cmdmod.split & WSP_VERT)
? wp->w_height + wp->w_status_height < Rows - p_ch
- tabline_height()
: wp->w_width != Columns)
|| (had_tab > 0 && wp != firstwin))
&& !ONE_WINDOW
&& !(wp->w_closing || wp->w_buffer->b_locked > 0)
) {
win_close(wp, false);
wpnext = firstwin; // just in case an autocommand does
// something strange with windows
tpnext = first_tabpage; // start all over...
open_wins = 0;
} else {
open_wins++;
}
}
// Without the ":tab" modifier only do the current tab page.
if (had_tab == 0 || tpnext == NULL) {
break;
}
goto_tabpage_tp(tpnext, true, true);
}
//
// 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!
//
// Don't execute Win/Buf Enter/Leave autocommands here.
autocmd_no_enter++;
win_enter(lastwin, false);
autocmd_no_leave++;
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) || !buf->b_p_bl) {
continue;
}
if (had_tab != 0) {
// With the ":tab" modifier don't move the window.
if (buf->b_nwindows > 0) {
wp = lastwin; // buffer has a window, skip it
} else {
wp = NULL;
}
} else {
// 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);
}
}
if (wp == NULL && split_ret == OK) {
bufref_T bufref;
set_bufref(&bufref, buf);
// Split the window and put the buffer in it.
p_ea_save = p_ea;
p_ea = true; // use space from all windows
split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
open_wins++;
p_ea = p_ea_save;
if (split_ret == FAIL) {
continue;
}
// Open the buffer in this window.
swap_exists_action = SEA_DIALOG;
set_curbuf(buf, DOBUF_GOTO);
if (!bufref_valid(&bufref)) {
// Autocommands deleted the buffer.
swap_exists_action = SEA_NONE;
break;
}
if (swap_exists_action == SEA_QUIT) {
cleanup_T cs;
// Reset the error/interrupt/exception state here so that
// aborting() returns false when closing a window.
enter_cleanup(&cs);
// User selected Quit at ATTENTION prompt; close this window.
win_close(curwin, true);
open_wins--;
swap_exists_action = SEA_NONE;
swap_exists_did_quit = true;
/* Restore the error/interrupt/exception state if not
* discarded by a new aborting error, interrupt, or uncaught
* exception. */
leave_cleanup(&cs);
} else
handle_swap_exists(NULL);
}
os_breakcheck();
if (got_int) {
(void)vgetc(); // only break the file loading, not the rest
break;
}
// Autocommands deleted the buffer or aborted script processing!!!
if (aborting()) {
break;
}
// When ":tab" was used open a new tab for a new window repeatedly.
if (had_tab > 0 && tabpage_index(NULL) <= p_tpm) {
cmdmod.tab = 9999;
}
}
autocmd_no_enter--;
win_enter(firstwin, false); // back to first window
autocmd_no_leave--;
/*
* Close superfluous windows.
*/
for (wp = lastwin; open_wins > count; ) {
r = (buf_hide(wp->w_buffer) || !bufIsChanged(wp->w_buffer)
|| autowrite(wp->w_buffer, false) == OK);
if (!win_valid(wp)) {
// BufWrite Autocommands made the window invalid, start over
wp = lastwin;
} else if (r) {
win_close(wp, !buf_hide(wp->w_buffer));
open_wins--;
wp = lastwin;
} else {
wp = wp->w_prev;
if (wp == NULL) {
break;
}
}
}
}
/*
* do_modelines() - process mode lines for the current file
*
* "flags" can be:
* OPT_WINONLY only set options local to window
* OPT_NOWIN don't set options local to window
*
* Returns immediately if the "ml" option isn't set.
*/
void do_modelines(int flags)
{
linenr_T lnum;
int nmlines;
static int entered = 0;
if (!curbuf->b_p_ml || (nmlines = (int)p_mls) == 0) {
return;
}
/* Disallow recursive entry here. Can happen when executing a modeline
* triggers an autocommand, which reloads modelines with a ":do". */
if (entered) {
return;
}
entered++;
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count && lnum <= nmlines;
lnum++) {
if (chk_modeline(lnum, flags) == 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, flags) == FAIL) {
nmlines = 0;
}
}
entered--;
}
/*
* chk_modeline() - check a single line for a mode string
* Return FAIL if an error encountered.
*/
static int
chk_modeline(
linenr_T lnum,
int flags // Same as for do_modelines().
)
{
char_u *s;
char_u *e;
char_u *linecopy; // local copy of any modeline found
int prev;
intmax_t vers;
int end;
int retval = OK;
char_u *save_sourcing_name;
linenr_T save_sourcing_lnum;
prev = -1;
for (s = ml_get(lnum); *s != NUL; s++) {
if (prev == -1 || ascii_isspace(prev)) {
if ((prev != -1 && STRNCMP(s, "ex:", (size_t)3) == 0)
|| STRNCMP(s, "vi:", (size_t)3) == 0)
break;
// Accept both "vim" and "Vim".
if ((s[0] == 'v' || s[0] == 'V') && s[1] == 'i' && s[2] == 'm') {
if (s[3] == '<' || s[3] == '=' || s[3] == '>') {
e = s + 4;
} else {
e = s + 3;
}
if (!try_getdigits(&e, &vers)) {
continue;
}
if (*e == ':'
&& (s[0] != 'V'
|| STRNCMP(skipwhite(e + 1), "set", 3) == 0)
&& (s[3] == ':'
|| (VIM_VERSION_100 >= vers && isdigit(s[3]))
|| (VIM_VERSION_100 < vers && s[3] == '<')
|| (VIM_VERSION_100 > vers && s[3] == '>')
|| (VIM_VERSION_100 == vers && s[3] == '='))) {
break;
}
}
}
prev = *s;
}
if (!*s) {
return retval;
}
do { // skip over "ex:", "vi:" or "vim:"
s++;
} while (s[-1] != ':');
s = linecopy = vim_strsave(s); // copy the line, it will change
save_sourcing_lnum = sourcing_lnum;
save_sourcing_name = sourcing_name;
sourcing_lnum = lnum; // prepare for emsg()
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.
* Skip over "\:", replacing it with ":".
*/
for (e = s; *e != ':' && *e != NUL; e++) {
if (e[0] == '\\' && e[1] == ':') {
STRMOVE(e, e + 1);
}
}
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
* Accept "se" for compatibility with Elvis.
*/
if (STRNCMP(s, "set ", (size_t)4) == 0
|| STRNCMP(s, "se ", (size_t)3) == 0) {
if (*e != ':') { // no terminating ':'?
break;
}
end = true;
s = vim_strchr(s, ' ') + 1;
}
*e = NUL; // truncate the set command
if (*s != NUL) { // skip over an empty "::"
const int secure_save = secure;
const sctx_T save_current_sctx = current_sctx;
current_sctx.sc_sid = SID_MODELINE;
current_sctx.sc_seq = 0;
current_sctx.sc_lnum = 0;
// Make sure no risky things are executed as a side effect.
secure = 1;
retval = do_set(s, OPT_MODELINE | OPT_LOCAL | flags);
secure = secure_save;
current_sctx = save_current_sctx;
if (retval == FAIL) { // stop if error found
break;
}
}
s = e + 1; // advance to next part
}
sourcing_lnum = save_sourcing_lnum;
sourcing_name = save_sourcing_name;
xfree(linecopy);
return retval;
}
// Return true if "buf" is a help buffer.
bool bt_help(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && buf->b_help;
}
// Return true if "buf" is a normal buffer, 'buftype' is empty.
bool bt_normal(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && buf->b_p_bt[0] == NUL;
}
// Return true if "buf" is the quickfix buffer.
bool bt_quickfix(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && buf->b_p_bt[0] == 'q';
}
// Return true if "buf" is a terminal buffer.
bool bt_terminal(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && buf->b_p_bt[0] == 't';
}
// Return true if "buf" is a "nofile", "acwrite" or "terminal" buffer.
// This means the buffer name is not a file name.
bool bt_nofile(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && ((buf->b_p_bt[0] == 'n' && buf->b_p_bt[2] == 'f')
|| buf->b_p_bt[0] == 'a'
|| buf->terminal
|| buf->b_p_bt[0] == 'p');
}
// Return true if "buf" is a "nowrite", "nofile" or "terminal" buffer.
bool bt_dontwrite(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
return buf != NULL && (buf->b_p_bt[0] == 'n'
|| buf->terminal
|| buf->b_p_bt[0] == 'p');
}
bool bt_dontwrite_msg(const buf_T *const buf)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
if (bt_dontwrite(buf)) {
EMSG(_("E382: Cannot write, 'buftype' option is set"));
return true;
}
return false;
}
// Return true if the buffer should be hidden, according to 'hidden', ":hide"
// and 'bufhidden'.
bool buf_hide(const buf_T *const buf)
{
// 'bufhidden' overrules 'hidden' and ":hide", check it first
switch (buf->b_p_bh[0]) {
case 'u': // "unload"
case 'w': // "wipe"
case 'd': return false; // "delete"
case 'h': return true; // "hide"
}
return p_hid || cmdmod.hide;
}
/*
* Return special buffer name.
* Returns NULL when the buffer has a normal file name.
*/
char_u *buf_spname(buf_T *buf)
{
if (bt_quickfix(buf)) {
win_T *win;
tabpage_T *tp;
/*
* For location list window, w_llist_ref points to the location list.
* For quickfix window, w_llist_ref is NULL.
*/
if (find_win_for_buf(buf, &win, &tp) && win->w_llist_ref != NULL) {
return (char_u *)_(msg_loclist);
} else {
return (char_u *)_(msg_qflist);
}
}
// There is no _file_ when 'buftype' is "nofile", b_sfname
// contains the name as specified by the user.
if (bt_nofile(buf)) {
if (buf->b_fname != NULL) {
return buf->b_fname;
}
if (bt_prompt(buf)) {
return (char_u *)_("[Prompt]");
}
return (char_u *)_("[Scratch]");
}
if (buf->b_fname == NULL) {
return (char_u *)_("[No Name]");
}
return NULL;
}
/// Find a window for buffer "buf".
/// If found true is returned and "wp" and "tp" are set to
/// the window and tabpage.
/// If not found, false is returned.
///
/// @param buf buffer to find a window for
/// @param[out] wp stores the found window
/// @param[out] tp stores the found tabpage
///
/// @return true if a window was found for the buffer.
bool find_win_for_buf(buf_T *buf, win_T **wp, tabpage_T **tp)
{
*wp = NULL;
*tp = NULL;
FOR_ALL_TAB_WINDOWS(tp2, wp2) {
if (wp2->w_buffer == buf) {
*tp = tp2;
*wp = wp2;
return true;
}
}
return false;
}
int buf_signcols(buf_T *buf)
{
if (buf->b_signcols_max == -1) {
signlist_T *sign; // a sign in the signlist
buf->b_signcols_max = 0;
int linesum = 0;
linenr_T curline = 0;
FOR_ALL_SIGNS_IN_BUF(buf, sign) {
if (sign->lnum > curline) {
if (linesum > buf->b_signcols_max) {
buf->b_signcols_max = linesum;
}
curline = sign->lnum;
linesum = 0;
}
linesum++;
}
if (linesum > buf->b_signcols_max) {
buf->b_signcols_max = linesum;
}
// Check if we need to redraw
if (buf->b_signcols_max != buf->b_signcols) {
buf->b_signcols = buf->b_signcols_max;
redraw_buf_later(buf, NOT_VALID);
}
}
return buf->b_signcols;
}
/*
* Set 'buflisted' for curbuf to "on" and trigger autocommands if it changed.
*/
void set_buflisted(int on)
{
if (on != curbuf->b_p_bl) {
curbuf->b_p_bl = on;
if (on) {
apply_autocmds(EVENT_BUFADD, NULL, NULL, false, curbuf);
} else {
apply_autocmds(EVENT_BUFDELETE, NULL, NULL, false, curbuf);
}
}
}
/// Read the file for "buf" again and check if the contents changed.
/// Return true if it changed or this could not be checked.
///
/// @param buf buffer to check
///
/// @return true if the buffer's contents have changed
bool buf_contents_changed(buf_T *buf)
FUNC_ATTR_NONNULL_ALL
{
bool differ = true;
// Allocate a buffer without putting it in the buffer list.
buf_T *newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
if (newbuf == NULL) {
return true;
}
// Force the 'fileencoding' and 'fileformat' to be equal.
exarg_T ea;
prep_exarg(&ea, buf);
// set curwin/curbuf to buf and save a few things
aco_save_T aco;
aucmd_prepbuf(&aco, newbuf);
if (ml_open(curbuf) == OK
&& readfile(buf->b_ffname, buf->b_fname,
(linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
&ea, READ_NEW | READ_DUMMY) == OK) {
// compare the two files line by line
if (buf->b_ml.ml_line_count == curbuf->b_ml.ml_line_count) {
differ = false;
for (linenr_T lnum = 1; lnum <= curbuf->b_ml.ml_line_count; lnum++) {
if (STRCMP(ml_get_buf(buf, lnum, false), ml_get(lnum)) != 0) {
differ = true;
break;
}
}
}
}
xfree(ea.cmd);
// restore curwin/curbuf and a few other things
aucmd_restbuf(&aco);
if (curbuf != newbuf) { // safety check
wipe_buffer(newbuf, false);
}
return differ;
}
/*
* Wipe out a buffer and decrement the last buffer number if it was used for
* this buffer. Call this to wipe out a temp buffer that does not contain any
* marks.
*/
void
wipe_buffer(
buf_T *buf,
int aucmd // When true trigger autocommands.
)
{
if (!aucmd) {
// Don't trigger BufDelete autocommands here.
block_autocmds();
}
close_buffer(NULL, buf, DOBUF_WIPE, false);
if (!aucmd) {
unblock_autocmds();
}
}
/// Creates or switches to a scratch buffer. :h special-buffers
/// Scratch buffer is:
/// - buftype=nofile bufhidden=hide noswapfile
/// - Always considered 'nomodified'
///
/// @param bufnr Buffer to switch to, or 0 to create a new buffer.
///
/// @see curbufIsChanged()
void buf_open_scratch(handle_T bufnr, char *bufname)
{
(void)do_ecmd((int)bufnr, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, NULL);
(void)setfname(curbuf, (char_u *)bufname, NULL, true);
set_option_value("bh", 0L, "hide", OPT_LOCAL);
set_option_value("bt", 0L, "nofile", OPT_LOCAL);
set_option_value("swf", 0L, NULL, OPT_LOCAL);
RESET_BINDING(curwin);
}
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