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vim/src/change.c
Christian Brabandt 03acd4761b
patch 9.1.0546: vim-tiny fails on CTRL-X/CTRL-A 
Problem:  vim-tiny fails on CTRL-X/CTRL-A
          (Rob Foehl, after 9.1.0172)
Solution: Move #ifdefs, so that after changing the line in del_bytes,
          the cached textlen value is invalidated

closes: 

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
2024-07-08 21:12:55 +02:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* change.c: functions related to changing text
*/
#include "vim.h"
/*
* If the file is readonly, give a warning message with the first change.
* Don't do this for autocommands.
* Doesn't use emsg(), because it flushes the macro buffer.
* If we have undone all changes b_changed will be FALSE, but "b_did_warn"
* will be TRUE.
* "col" is the column for the message; non-zero when in insert mode and
* 'showmode' is on.
* Careful: may trigger autocommands that reload the buffer.
*/
void
change_warning(int col)
{
static char *w_readonly = N_("W10: Warning: Changing a readonly file");
if (curbuf->b_did_warn
|| curbufIsChanged()
|| autocmd_busy
|| !curbuf->b_p_ro)
return;
++curbuf_lock;
apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf);
--curbuf_lock;
if (!curbuf->b_p_ro)
return;
// Do what msg() does, but with a column offset if the warning should
// be after the mode message.
msg_start();
if (msg_row == Rows - 1)
msg_col = col;
msg_source(HL_ATTR(HLF_W));
msg_puts_attr(_(w_readonly), HL_ATTR(HLF_W) | MSG_HIST);
#ifdef FEAT_EVAL
set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_readonly), -1);
#endif
msg_clr_eos();
(void)msg_end();
if (msg_silent == 0 && !silent_mode
#ifdef FEAT_EVAL
&& time_for_testing != 1
#endif
)
{
out_flush();
ui_delay(1002L, TRUE); // give the user time to think about it
}
curbuf->b_did_warn = TRUE;
redraw_cmdline = FALSE; // don't redraw and erase the message
if (msg_row < Rows - 1)
showmode();
}
/*
* Call this function when something in the current buffer is changed.
*
* Most often called through changed_bytes() and changed_lines(), which also
* mark the area of the display to be redrawn.
*
* Careful: may trigger autocommands that reload the buffer.
*/
void
changed(void)
{
#if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
if (p_imst == IM_ON_THE_SPOT)
{
// The text of the preediting area is inserted, but this doesn't
// mean a change of the buffer yet. That is delayed until the
// text is committed. (this means preedit becomes empty)
if (im_is_preediting() && !xim_changed_while_preediting)
return;
xim_changed_while_preediting = FALSE;
}
#endif
if (!curbuf->b_changed)
{
int save_msg_scroll = msg_scroll;
// Give a warning about changing a read-only file. This may also
// check-out the file, thus change "curbuf"!
change_warning(0);
// Create a swap file if that is wanted.
// Don't do this for "nofile" and "nowrite" buffer types.
if (curbuf->b_may_swap && !bt_dontwrite(curbuf))
{
int save_need_wait_return = need_wait_return;
need_wait_return = FALSE;
ml_open_file(curbuf);
// The ml_open_file() can cause an ATTENTION message.
// Wait two seconds, to make sure the user reads this unexpected
// message. Since we could be anywhere, call wait_return() now,
// and don't let the emsg() set msg_scroll.
if (need_wait_return && emsg_silent == 0 && !in_assert_fails)
{
out_flush();
ui_delay(2002L, TRUE);
wait_return(TRUE);
msg_scroll = save_msg_scroll;
}
else
need_wait_return = save_need_wait_return;
}
changed_internal();
}
++CHANGEDTICK(curbuf);
#ifdef FEAT_SEARCH_EXTRA
// If a pattern is highlighted, the position may now be invalid.
highlight_match = FALSE;
#endif
}
/*
* Internal part of changed(), no user interaction.
* Also used for recovery.
*/
void
changed_internal(void)
{
curbuf->b_changed = TRUE;
ml_setflags(curbuf);
check_status(curbuf);
redraw_tabline = TRUE;
need_maketitle = TRUE; // set window title later
}
#ifdef FEAT_EVAL
static long next_listener_id = 0;
/*
* Check if the change at "lnum" is above or overlaps with an existing
* change. If above then flush changes and invoke listeners.
*/
static void
check_recorded_changes(
buf_T *buf,
linenr_T lnum,
linenr_T lnume,
long xtra)
{
if (buf->b_recorded_changes == NULL || xtra == 0)
return;
listitem_T *li;
linenr_T prev_lnum;
linenr_T prev_lnume;
FOR_ALL_LIST_ITEMS(buf->b_recorded_changes, li)
{
prev_lnum = (linenr_T)dict_get_number(
li->li_tv.vval.v_dict, "lnum");
prev_lnume = (linenr_T)dict_get_number(
li->li_tv.vval.v_dict, "end");
if (prev_lnum >= lnum || prev_lnum > lnume || prev_lnume >= lnum)
{
// the current change is going to make the line number in
// the older change invalid, flush now
invoke_listeners(curbuf);
break;
}
}
}
/*
* Record a change for listeners added with listener_add().
* Always for the current buffer.
*/
static void
may_record_change(
linenr_T lnum,
colnr_T col,
linenr_T lnume,
long xtra)
{
dict_T *dict;
if (curbuf->b_listener == NULL)
return;
// If the new change is going to change the line numbers in already listed
// changes, then flush.
check_recorded_changes(curbuf, lnum, lnume, xtra);
if (curbuf->b_recorded_changes == NULL)
{
curbuf->b_recorded_changes = list_alloc();
if (curbuf->b_recorded_changes == NULL) // out of memory
return;
++curbuf->b_recorded_changes->lv_refcount;
curbuf->b_recorded_changes->lv_lock = VAR_FIXED;
}
dict = dict_alloc();
if (dict == NULL)
return;
dict_add_number(dict, "lnum", (varnumber_T)lnum);
dict_add_number(dict, "end", (varnumber_T)lnume);
dict_add_number(dict, "added", (varnumber_T)xtra);
dict_add_number(dict, "col", (varnumber_T)col + 1);
list_append_dict(curbuf->b_recorded_changes, dict);
}
/*
* listener_add() function
*/
void
f_listener_add(typval_T *argvars, typval_T *rettv)
{
callback_T callback;
listener_T *lnr;
buf_T *buf = curbuf;
if (in_vim9script() && check_for_opt_buffer_arg(argvars, 1) == FAIL)
return;
callback = get_callback(&argvars[0]);
if (callback.cb_name == NULL)
return;
if (argvars[1].v_type != VAR_UNKNOWN)
{
buf = get_buf_arg(&argvars[1]);
if (buf == NULL)
{
free_callback(&callback);
return;
}
}
lnr = ALLOC_CLEAR_ONE(listener_T);
if (lnr == NULL)
{
free_callback(&callback);
return;
}
lnr->lr_next = buf->b_listener;
buf->b_listener = lnr;
set_callback(&lnr->lr_callback, &callback);
if (callback.cb_free_name)
vim_free(callback.cb_name);
lnr->lr_id = ++next_listener_id;
rettv->vval.v_number = lnr->lr_id;
}
/*
* listener_flush() function
*/
void
f_listener_flush(typval_T *argvars, typval_T *rettv UNUSED)
{
buf_T *buf = curbuf;
if (in_vim9script() && check_for_opt_buffer_arg(argvars, 0) == FAIL)
return;
if (argvars[0].v_type != VAR_UNKNOWN)
{
buf = get_buf_arg(&argvars[0]);
if (buf == NULL)
return;
}
invoke_listeners(buf);
}
static void
remove_listener(buf_T *buf, listener_T *lnr, listener_T *prev)
{
if (prev != NULL)
prev->lr_next = lnr->lr_next;
else
buf->b_listener = lnr->lr_next;
free_callback(&lnr->lr_callback);
vim_free(lnr);
}
/*
* listener_remove() function
*/
void
f_listener_remove(typval_T *argvars, typval_T *rettv)
{
listener_T *lnr;
listener_T *next;
listener_T *prev;
int id;
buf_T *buf;
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
id = tv_get_number(argvars);
FOR_ALL_BUFFERS(buf)
{
prev = NULL;
for (lnr = buf->b_listener; lnr != NULL; lnr = next)
{
next = lnr->lr_next;
if (lnr->lr_id == id)
{
if (textlock > 0)
{
// in invoke_listeners(), clear ID and delete later
lnr->lr_id = 0;
return;
}
remove_listener(buf, lnr, prev);
rettv->vval.v_number = 1;
return;
}
prev = lnr;
}
}
}
/*
* Called before inserting a line above "lnum"/"lnum3" or deleting line "lnum"
* to "lnume".
*/
void
may_invoke_listeners(buf_T *buf, linenr_T lnum, linenr_T lnume, int added)
{
check_recorded_changes(buf, lnum, lnume, added);
}
/*
* Called when a sequence of changes is done: invoke listeners added with
* listener_add().
*/
void
invoke_listeners(buf_T *buf)
{
listener_T *lnr;
typval_T rettv;
typval_T argv[6];
listitem_T *li;
linenr_T start = MAXLNUM;
linenr_T end = 0;
linenr_T added = 0;
int save_updating_screen = updating_screen;
static int recursive = FALSE;
listener_T *next;
listener_T *prev;
if (buf->b_recorded_changes == NULL // nothing changed
|| buf->b_listener == NULL // no listeners
|| recursive) // already busy
return;
recursive = TRUE;
// Block messages on channels from being handled, so that they don't make
// text changes here.
++updating_screen;
argv[0].v_type = VAR_NUMBER;
argv[0].vval.v_number = buf->b_fnum; // a:bufnr
FOR_ALL_LIST_ITEMS(buf->b_recorded_changes, li)
{
varnumber_T lnum;
lnum = dict_get_number(li->li_tv.vval.v_dict, "lnum");
if (start > lnum)
start = lnum;
lnum = dict_get_number(li->li_tv.vval.v_dict, "end");
if (end < lnum)
end = lnum;
added += dict_get_number(li->li_tv.vval.v_dict, "added");
}
argv[1].v_type = VAR_NUMBER;
argv[1].vval.v_number = start;
argv[2].v_type = VAR_NUMBER;
argv[2].vval.v_number = end;
argv[3].v_type = VAR_NUMBER;
argv[3].vval.v_number = added;
argv[4].v_type = VAR_LIST;
argv[4].vval.v_list = buf->b_recorded_changes;
++textlock;
for (lnr = buf->b_listener; lnr != NULL; lnr = lnr->lr_next)
{
call_callback(&lnr->lr_callback, -1, &rettv, 5, argv);
clear_tv(&rettv);
}
// If f_listener_remove() was called may have to remove a listener now.
prev = NULL;
for (lnr = buf->b_listener; lnr != NULL; lnr = next)
{
next = lnr->lr_next;
if (lnr->lr_id == 0)
remove_listener(buf, lnr, prev);
else
prev = lnr;
}
--textlock;
list_unref(buf->b_recorded_changes);
buf->b_recorded_changes = NULL;
if (save_updating_screen)
updating_screen = TRUE;
else
after_updating_screen(TRUE);
recursive = FALSE;
}
/*
* Remove all listeners associated with "buf".
*/
void
remove_listeners(buf_T *buf)
{
listener_T *lnr;
listener_T *next;
for (lnr = buf->b_listener; lnr != NULL; lnr = next)
{
next = lnr->lr_next;
free_callback(&lnr->lr_callback);
vim_free(lnr);
}
buf->b_listener = NULL;
}
#endif
/*
* Common code for when a change was made.
* See changed_lines() for the arguments.
* Careful: may trigger autocommands that reload the buffer.
*/
static void
changed_common(
linenr_T lnum,
colnr_T col,
linenr_T lnume,
long xtra)
{
win_T *wp;
tabpage_T *tp;
int i;
int cols;
pos_T *p;
int add;
// mark the buffer as modified
changed();
#ifdef FEAT_EVAL
may_record_change(lnum, col, lnume, xtra);
#endif
#ifdef FEAT_DIFF
if (curwin->w_p_diff && diff_internal())
curtab->tp_diff_update = TRUE;
#endif
// set the '. mark
if ((cmdmod.cmod_flags & CMOD_KEEPJUMPS) == 0)
{
curbuf->b_last_change.lnum = lnum;
curbuf->b_last_change.col = col;
// Create a new entry if a new undo-able change was started or we
// don't have an entry yet.
if (curbuf->b_new_change || curbuf->b_changelistlen == 0)
{
if (curbuf->b_changelistlen == 0)
add = TRUE;
else
{
// Don't create a new entry when the line number is the same
// as the last one and the column is not too far away. Avoids
// creating many entries for typing "xxxxx".
p = &curbuf->b_changelist[curbuf->b_changelistlen - 1];
if (p->lnum != lnum)
add = TRUE;
else
{
cols = comp_textwidth(FALSE);
if (cols == 0)
cols = 79;
add = (p->col + cols < col || col + cols < p->col);
}
}
if (add)
{
// This is the first of a new sequence of undo-able changes
// and it's at some distance of the last change. Use a new
// position in the changelist.
curbuf->b_new_change = FALSE;
if (curbuf->b_changelistlen == JUMPLISTSIZE)
{
// changelist is full: remove oldest entry
curbuf->b_changelistlen = JUMPLISTSIZE - 1;
mch_memmove(curbuf->b_changelist, curbuf->b_changelist + 1,
sizeof(pos_T) * (JUMPLISTSIZE - 1));
FOR_ALL_TAB_WINDOWS(tp, wp)
{
// Correct position in changelist for other windows on
// this buffer.
if (wp->w_buffer == curbuf && wp->w_changelistidx > 0)
--wp->w_changelistidx;
}
}
FOR_ALL_TAB_WINDOWS(tp, wp)
{
// For other windows, if the position in the changelist is
// at the end it stays at the end.
if (wp->w_buffer == curbuf
&& wp->w_changelistidx == curbuf->b_changelistlen)
++wp->w_changelistidx;
}
++curbuf->b_changelistlen;
}
}
curbuf->b_changelist[curbuf->b_changelistlen - 1] =
curbuf->b_last_change;
// The current window is always after the last change, so that "g,"
// takes you back to it.
curwin->w_changelistidx = curbuf->b_changelistlen;
}
if (VIsual_active)
check_visual_pos();
FOR_ALL_TAB_WINDOWS(tp, wp)
{
if (wp->w_buffer == curbuf)
{
linenr_T last = lnume + xtra - 1; // last line after the change
// Mark this window to be redrawn later.
if (!redraw_not_allowed && wp->w_redr_type < UPD_VALID)
wp->w_redr_type = UPD_VALID;
// When inserting/deleting lines and the window has specific lines
// to be redrawn, w_redraw_top and w_redraw_bot may now be invalid,
// so just redraw everything.
if (xtra != 0 && wp->w_redraw_top != 0)
redraw_win_later(wp, UPD_NOT_VALID);
// Reset "w_skipcol" if the topline length has become smaller to
// such a degree that nothing will be visible anymore, accounting
// for 'smoothscroll' <<< or 'listchars' "precedes" marker.
if (wp->w_skipcol > 0
&& (last < wp->w_topline
|| (wp->w_topline >= lnum
&& wp->w_topline < lnume
&& win_linetabsize(wp, wp->w_topline,
ml_get(wp->w_topline), (colnr_T)MAXCOL)
<= wp->w_skipcol + sms_marker_overlap(wp, -1))))
wp->w_skipcol = 0;
// Check if a change in the buffer has invalidated the cached
// values for the cursor.
#ifdef FEAT_FOLDING
// Update the folds for this window. Can't postpone this, because
// a following operator might work on the whole fold: ">>dd".
foldUpdate(wp, lnum, last);
// The change may cause lines above or below the change to become
// included in a fold. Set lnum/lnume to the first/last line that
// might be displayed differently.
// Set w_cline_folded here as an efficient way to update it when
// inserting lines just above a closed fold.
i = hasFoldingWin(wp, lnum, &lnum, NULL, FALSE, NULL);
if (wp->w_cursor.lnum == lnum)
wp->w_cline_folded = i;
i = hasFoldingWin(wp, last, NULL, &last, FALSE, NULL);
if (wp->w_cursor.lnum == last)
wp->w_cline_folded = i;
// If the changed line is in a range of previously folded lines,
// compare with the first line in that range.
if (wp->w_cursor.lnum <= lnum)
{
i = find_wl_entry(wp, lnum);
if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum)
changed_line_abv_curs_win(wp);
}
#endif
if (wp->w_cursor.lnum > lnum)
changed_line_abv_curs_win(wp);
else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col)
changed_cline_bef_curs_win(wp);
if (wp->w_botline >= lnum)
{
if (xtra < 0)
invalidate_botline_win(wp);
else
// Assume that botline doesn't change (inserted lines make
// other lines scroll down below botline).
approximate_botline_win(wp);
}
// Check if any w_lines[] entries have become invalid.
// For entries below the change: Correct the lnums for
// inserted/deleted lines. Makes it possible to stop displaying
// after the change.
for (i = 0; i < wp->w_lines_valid; ++i)
if (wp->w_lines[i].wl_valid)
{
if (wp->w_lines[i].wl_lnum >= lnum)
{
// Do not change wl_lnum at index zero, it is used to
// compare with w_topline. Invalidate it instead.
if (wp->w_lines[i].wl_lnum < lnume || i == 0)
{
// line included in change
wp->w_lines[i].wl_valid = FALSE;
}
else if (xtra != 0)
{
// line below change
wp->w_lines[i].wl_lnum += xtra;
#ifdef FEAT_FOLDING
wp->w_lines[i].wl_lastlnum += xtra;
#endif
}
}
#ifdef FEAT_FOLDING
else if (wp->w_lines[i].wl_lastlnum >= lnum)
{
// change somewhere inside this range of folded lines,
// may need to be redrawn
wp->w_lines[i].wl_valid = FALSE;
}
#endif
}
#ifdef FEAT_FOLDING
// Take care of side effects for setting w_topline when folds have
// changed. Esp. when the buffer was changed in another window.
if (hasAnyFolding(wp))
set_topline(wp, wp->w_topline);
#endif
// If lines have been added or removed, relative numbering always
// requires an update even if cursor didn't move.
if (wp->w_p_rnu && xtra != 0)
wp->w_last_cursor_lnum_rnu = 0;
#ifdef FEAT_SYN_HL
if (wp->w_p_cul && wp->w_last_cursorline >= lnum)
{
if (wp->w_last_cursorline < lnume)
// If 'cursorline' was inside the change, it has already
// been invalidated in w_lines[] by the loop above.
wp->w_last_cursorline = 0;
else
// If 'cursorline' was below the change, adjust its lnum.
wp->w_last_cursorline += xtra;
}
#endif
}
#ifdef FEAT_SEARCH_EXTRA
if (wp == curwin && xtra != 0 && search_hl_has_cursor_lnum >= lnum)
search_hl_has_cursor_lnum += xtra;
#endif
}
// Call update_screen() later, which checks out what needs to be redrawn,
// since it notices b_mod_set and then uses b_mod_*.
set_must_redraw(UPD_VALID);
// when the cursor line is changed always trigger CursorMoved
if (lnum <= curwin->w_cursor.lnum
&& lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum)
last_cursormoved.lnum = 0;
}
static void
changedOneline(buf_T *buf, linenr_T lnum)
{
if (buf->b_mod_set)
{
// find the maximum area that must be redisplayed
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
else if (lnum >= buf->b_mod_bot)
buf->b_mod_bot = lnum + 1;
}
else
{
// set the area that must be redisplayed to one line
buf->b_mod_set = TRUE;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnum + 1;
buf->b_mod_xlines = 0;
}
}
/*
* Changed bytes within a single line for the current buffer.
* - marks the windows on this buffer to be redisplayed
* - marks the buffer changed by calling changed()
* - invalidates cached values
* Careful: may trigger autocommands that reload the buffer.
*/
void
changed_bytes(linenr_T lnum, colnr_T col)
{
changedOneline(curbuf, lnum);
changed_common(lnum, col, lnum + 1, 0L);
#ifdef FEAT_SPELL
// When text has been changed at the end of the line, possibly the start of
// the next line may have SpellCap that should be removed or it needs to be
// displayed. Schedule the next line for redrawing just in case.
// Don't do this when displaying '$' at the end of changed text.
if (spell_check_window(curwin)
&& lnum < curbuf->b_ml.ml_line_count
&& vim_strchr(p_cpo, CPO_DOLLAR) == NULL)
redrawWinline(curwin, lnum + 1);
#endif
#ifdef FEAT_DIFF
// Diff highlighting in other diff windows may need to be updated too.
if (curwin->w_p_diff)
{
win_T *wp;
linenr_T wlnum;
FOR_ALL_WINDOWS(wp)
if (wp->w_p_diff && wp != curwin)
{
redraw_win_later(wp, UPD_VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0)
changedOneline(wp->w_buffer, wlnum);
}
}
#endif
}
/*
* Like changed_bytes() but also adjust text properties for "added" bytes.
* When "added" is negative text was deleted.
*/
void
inserted_bytes(linenr_T lnum, colnr_T col, int added UNUSED)
{
#ifdef FEAT_PROP_POPUP
if (curbuf->b_has_textprop && added != 0)
adjust_prop_columns(lnum, col, added, 0);
#endif
changed_bytes(lnum, col);
}
/*
* Appended "count" lines below line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void
appended_lines(linenr_T lnum, long count)
{
changed_lines(lnum + 1, 0, lnum + 1, count);
}
/*
* Like appended_lines(), but adjust marks first.
*/
void
appended_lines_mark(linenr_T lnum, long count)
{
mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L);
changed_lines(lnum + 1, 0, lnum + 1, count);
}
/*
* Deleted "count" lines at line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void
deleted_lines(linenr_T lnum, long count)
{
changed_lines(lnum, 0, lnum + count, -count);
}
/*
* Like deleted_lines(), but adjust marks first.
* Make sure the cursor is on a valid line before calling, a GUI callback may
* be triggered to display the cursor.
*/
void
deleted_lines_mark(linenr_T lnum, long count)
{
mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count);
changed_lines(lnum, 0, lnum + count, -count);
}
/*
* Marks the area to be redrawn after a change.
* Consider also calling changed_line_display_buf().
*/
void
changed_lines_buf(
buf_T *buf,
linenr_T lnum, // first line with change
linenr_T lnume, // line below last changed line
long xtra) // number of extra lines (negative when deleting)
{
if (buf->b_mod_set)
{
// find the maximum area that must be redisplayed
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
if (lnum < buf->b_mod_bot)
{
// adjust old bot position for xtra lines
buf->b_mod_bot += xtra;
if (buf->b_mod_bot < lnum)
buf->b_mod_bot = lnum;
}
if (lnume + xtra > buf->b_mod_bot)
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines += xtra;
}
else
{
// set the area that must be redisplayed
buf->b_mod_set = TRUE;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines = xtra;
}
}
/*
* Changed lines for the current buffer.
* Must be called AFTER the change and after mark_adjust().
* - mark the buffer changed by calling changed()
* - mark the windows on this buffer to be redisplayed
* - invalidate cached values
* "lnum" is the first line that needs displaying, "lnume" the first line
* below the changed lines (BEFORE the change).
* When only inserting lines, "lnum" and "lnume" are equal.
* Takes care of calling changed() and updating b_mod_*.
* Careful: may trigger autocommands that reload the buffer.
*/
void
changed_lines(
linenr_T lnum, // first line with change
colnr_T col, // column in first line with change
linenr_T lnume, // line below last changed line
long xtra) // number of extra lines (negative when deleting)
{
changed_lines_buf(curbuf, lnum, lnume, xtra);
#ifdef FEAT_DIFF
if (xtra == 0 && curwin->w_p_diff && !diff_internal())
{
// When the number of lines doesn't change then mark_adjust() isn't
// called and other diff buffers still need to be marked for
// displaying.
win_T *wp;
linenr_T wlnum;
FOR_ALL_WINDOWS(wp)
if (wp->w_p_diff && wp != curwin)
{
redraw_win_later(wp, UPD_VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0)
changed_lines_buf(wp->w_buffer, wlnum,
lnume - lnum + wlnum, 0L);
}
}
#endif
changed_common(lnum, col, lnume, xtra);
}
/*
* Called when the changed flag must be reset for buffer "buf".
* When "ff" is TRUE also reset 'fileformat'.
* When "always_inc_changedtick" is TRUE b:changedtick is incremented also when
* the changed flag was off.
*/
void
unchanged(buf_T *buf, int ff, int always_inc_changedtick)
{
if (buf->b_changed || (ff && file_ff_differs(buf, FALSE)))
{
buf->b_changed = 0;
ml_setflags(buf);
if (ff)
save_file_ff(buf);
check_status(buf);
redraw_tabline = TRUE;
need_maketitle = TRUE; // set window title later
++CHANGEDTICK(buf);
}
else if (always_inc_changedtick)
++CHANGEDTICK(buf);
#ifdef FEAT_NETBEANS_INTG
netbeans_unmodified(buf);
#endif
}
/*
* Save the current values of 'fileformat' and 'fileencoding', so that we know
* the file must be considered changed when the value is different.
*/
void
save_file_ff(buf_T *buf)
{
buf->b_start_ffc = *buf->b_p_ff;
buf->b_start_eof = buf->b_p_eof;
buf->b_start_eol = buf->b_p_eol;
buf->b_start_bomb = buf->b_p_bomb;
// Only use free/alloc when necessary, they take time.
if (buf->b_start_fenc == NULL
|| STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0)
{
vim_free(buf->b_start_fenc);
buf->b_start_fenc = vim_strsave(buf->b_p_fenc);
}
}
/*
* Return TRUE if 'fileformat' and/or 'fileencoding' has a different value
* from when editing started (save_file_ff() called).
* Also when 'endofline' was changed and 'binary' is set, or when 'bomb' was
* changed and 'binary' is not set.
* Also when 'endofline' was changed and 'fixeol' is not set.
* When "ignore_empty" is true don't consider a new, empty buffer to be
* changed.
*/
int
file_ff_differs(buf_T *buf, int ignore_empty)
{
// In a buffer that was never loaded the options are not valid.
if (buf->b_flags & BF_NEVERLOADED)
return FALSE;
if (ignore_empty
&& (buf->b_flags & BF_NEW)
&& buf->b_ml.ml_line_count == 1
&& *ml_get_buf(buf, (linenr_T)1, FALSE) == NUL)
return FALSE;
if (buf->b_start_ffc != *buf->b_p_ff)
return TRUE;
if ((buf->b_p_bin || !buf->b_p_fixeol)
&& (buf->b_start_eof != buf->b_p_eof
|| buf->b_start_eol != buf->b_p_eol))
return TRUE;
if (!buf->b_p_bin && buf->b_start_bomb != buf->b_p_bomb)
return TRUE;
if (buf->b_start_fenc == NULL)
return (*buf->b_p_fenc != NUL);
return (STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0);
}
/*
* Insert string "p" at the cursor position. Stops at a NUL byte.
* Handles Replace mode and multi-byte characters.
*/
void
ins_bytes(char_u *p)
{
ins_bytes_len(p, (int)STRLEN(p));
}
/*
* Insert string "p" with length "len" at the cursor position.
* Handles Replace mode and multi-byte characters.
*/
void
ins_bytes_len(char_u *p, int len)
{
int i;
int n;
if (has_mbyte)
for (i = 0; i < len; i += n)
{
if (enc_utf8)
// avoid reading past p[len]
n = utfc_ptr2len_len(p + i, len - i);
else
n = (*mb_ptr2len)(p + i);
ins_char_bytes(p + i, n);
}
else
for (i = 0; i < len; ++i)
ins_char(p[i]);
}
/*
* Insert or replace a single character at the cursor position.
* When in MODE_REPLACE or MODE_VREPLACE state, replace any existing character.
* Caller must have prepared for undo.
* For multi-byte characters we get the whole character, the caller must
* convert bytes to a character.
*/
void
ins_char(int c)
{
char_u buf[MB_MAXBYTES + 1];
int n = (*mb_char2bytes)(c, buf);
// When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte.
// Happens for CTRL-Vu9900.
if (buf[0] == 0)
buf[0] = '\n';
ins_char_bytes(buf, n);
}
void
ins_char_bytes(char_u *buf, int charlen)
{
int c = buf[0];
int newlen; // nr of bytes inserted
int oldlen; // nr of bytes deleted (0 when not replacing)
char_u *p;
char_u *newp;
char_u *oldp;
int linelen; // length of old line including NUL
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
int i;
// Break tabs if needed.
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
linelen = (int)ml_get_len(lnum) + 1;
// The lengths default to the values for when not replacing.
oldlen = 0;
newlen = charlen;
if (State & REPLACE_FLAG)
{
if (State & VREPLACE_FLAG)
{
colnr_T new_vcol = 0; // init for GCC
colnr_T vcol;
int old_list;
// Disable 'list' temporarily, unless 'cpo' contains the 'L' flag.
// Returns the old value of list, so when finished,
// curwin->w_p_list should be set back to this.
old_list = curwin->w_p_list;
if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL)
curwin->w_p_list = FALSE;
// In virtual replace mode each character may replace one or more
// characters (zero if it's a TAB). Count the number of bytes to
// be deleted to make room for the new character, counting screen
// cells. May result in adding spaces to fill a gap.
getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL);
new_vcol = vcol + chartabsize(buf, vcol);
while (oldp[col + oldlen] != NUL && vcol < new_vcol)
{
vcol += chartabsize(oldp + col + oldlen, vcol);
// Don't need to remove a TAB that takes us to the right
// position.
if (vcol > new_vcol && oldp[col + oldlen] == TAB)
break;
oldlen += (*mb_ptr2len)(oldp + col + oldlen);
// Deleted a bit too much, insert spaces.
if (vcol > new_vcol)
newlen += vcol - new_vcol;
}
curwin->w_p_list = old_list;
}
else if (oldp[col] != NUL)
{
// normal replace
oldlen = (*mb_ptr2len)(oldp + col);
}
// Push the replaced bytes onto the replace stack, so that they can be
// put back when BS is used. The bytes of a multi-byte character are
// done the other way around, so that the first byte is popped off
// first (it tells the byte length of the character).
replace_push(NUL);
for (i = 0; i < oldlen; ++i)
{
if (has_mbyte)
i += replace_push_mb(oldp + col + i) - 1;
else
replace_push(oldp[col + i]);
}
}
newp = alloc(linelen + newlen - oldlen);
if (newp == NULL)
return;
// Copy bytes before the cursor.
if (col > 0)
mch_memmove(newp, oldp, (size_t)col);
// Copy bytes after the changed character(s).
p = newp + col;
if (linelen > col + oldlen)
mch_memmove(p + newlen, oldp + col + oldlen,
(size_t)(linelen - col - oldlen));
// Insert or overwrite the new character.
mch_memmove(p, buf, charlen);
i = charlen;
// Fill with spaces when necessary.
while (i < newlen)
p[i++] = ' ';
// Replace the line in the buffer.
ml_replace(lnum, newp, FALSE);
// mark the buffer as changed and prepare for displaying
changed_bytes(lnum, col);
#ifdef FEAT_PROP_POPUP
if (curbuf->b_has_textprop && newlen != oldlen)
adjust_prop_columns(lnum, col, newlen - oldlen,
State & REPLACE_FLAG ? APC_SUBSTITUTE : 0);
#endif
// If we're in Insert or Replace mode and 'showmatch' is set, then briefly
// show the match for right parens and braces.
if (p_sm && (State & MODE_INSERT)
&& msg_silent == 0
&& !ins_compl_active())
{
if (has_mbyte)
showmatch(mb_ptr2char(buf));
else
showmatch(c);
}
#ifdef FEAT_RIGHTLEFT
if (!p_ri || (State & REPLACE_FLAG))
#endif
{
// Normal insert: move cursor right
curwin->w_cursor.col += charlen;
}
// TODO: should try to update w_row here, to avoid recomputing it later.
}
/*
* Insert a string at the cursor position.
* Note: Does NOT handle Replace mode.
* Caller must have prepared for undo.
*/
void
ins_str(char_u *s)
{
char_u *oldp, *newp;
int newlen = (int)STRLEN(s);
int oldlen;
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
oldlen = (int)ml_get_len(lnum);
newp = alloc(oldlen + newlen + 1);
if (newp == NULL)
return;
if (col > 0)
mch_memmove(newp, oldp, (size_t)col);
mch_memmove(newp + col, s, (size_t)newlen);
mch_memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1));
ml_replace(lnum, newp, FALSE);
inserted_bytes(lnum, col, newlen);
curwin->w_cursor.col += newlen;
}
/*
* Delete one character under the cursor.
* If "fixpos" is TRUE, don't leave the cursor on the NUL after the line.
* Caller must have prepared for undo.
*
* return FAIL for failure, OK otherwise
*/
int
del_char(int fixpos)
{
if (has_mbyte)
{
// Make sure the cursor is at the start of a character.
mb_adjust_cursor();
if (*ml_get_cursor() == NUL)
return FAIL;
return del_chars(1L, fixpos);
}
return del_bytes(1L, fixpos, TRUE);
}
/*
* Like del_bytes(), but delete characters instead of bytes.
*/
int
del_chars(long count, int fixpos)
{
long bytes = 0;
long i;
char_u *p;
int l;
p = ml_get_cursor();
for (i = 0; i < count && *p != NUL; ++i)
{
l = (*mb_ptr2len)(p);
bytes += l;
p += l;
}
return del_bytes(bytes, fixpos, TRUE);
}
/*
* Delete "count" bytes under the cursor.
* If "fixpos" is TRUE, don't leave the cursor on the NUL after the line.
* Caller must have prepared for undo.
*
* Return FAIL for failure, OK otherwise.
*/
int
del_bytes(
long count,
int fixpos_arg,
int use_delcombine UNUSED) // 'delcombine' option applies
{
char_u *oldp, *newp;
colnr_T oldlen;
colnr_T newlen;
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
int alloc_newp;
long movelen;
int fixpos = fixpos_arg;
oldp = ml_get(lnum);
oldlen = (int)ml_get_len(lnum);
// Can't do anything when the cursor is on the NUL after the line.
if (col >= oldlen)
return FAIL;
// If "count" is zero there is nothing to do.
if (count == 0)
return OK;
// If "count" is negative the caller must be doing something wrong.
if (count < 1)
{
siemsg(e_invalid_count_for_del_bytes_nr, count);
return FAIL;
}
// If 'delcombine' is set and deleting (less than) one character, only
// delete the last combining character.
if (p_deco && use_delcombine && enc_utf8
&& utfc_ptr2len(oldp + col) >= count)
{
int cc[MAX_MCO];
int n;
(void)utfc_ptr2char(oldp + col, cc);
if (cc[0] != NUL)
{
// Find the last composing char, there can be several.
n = col;
do
{
col = n;
count = utf_ptr2len(oldp + n);
n += count;
} while (UTF_COMPOSINGLIKE(oldp + col, oldp + n));
fixpos = 0;
}
}
// When count is too big, reduce it.
movelen = (long)oldlen - (long)col - count + 1; // includes trailing NUL
if (movelen <= 1)
{
// If we just took off the last character of a non-blank line, and
// fixpos is TRUE, we don't want to end up positioned at the NUL,
// unless "restart_edit" is set or 'virtualedit' contains "onemore".
if (col > 0 && fixpos && restart_edit == 0
&& (get_ve_flags() & VE_ONEMORE) == 0)
{
--curwin->w_cursor.col;
curwin->w_cursor.coladd = 0;
if (has_mbyte)
curwin->w_cursor.col -=
(*mb_head_off)(oldp, oldp + curwin->w_cursor.col);
}
count = oldlen - col;
movelen = 1;
}
newlen = oldlen - count;
// If the old line has been allocated the deletion can be done in the
// existing line. Otherwise a new line has to be allocated
// Can't do this when using Netbeans, because we would need to invoke
// netbeans_removed(), which deallocates the line. Let ml_replace() take
// care of notifying Netbeans.
#ifdef FEAT_NETBEANS_INTG
if (netbeans_active())
alloc_newp = TRUE;
else
#endif
alloc_newp = !ml_line_alloced(); // check if oldp was allocated
if (!alloc_newp)
newp = oldp; // use same allocated memory
else
{ // need to allocate a new line
newp = alloc(newlen + 1);
if (newp == NULL)
return FAIL;
mch_memmove(newp, oldp, (size_t)col);
}
mch_memmove(newp + col, oldp + col + count, (size_t)movelen);
if (alloc_newp)
ml_replace(lnum, newp, FALSE);
else
{
#ifdef FEAT_PROP_POPUP
// Also move any following text properties.
if (oldlen + 1 < curbuf->b_ml.ml_line_len)
mch_memmove(newp + newlen + 1, oldp + oldlen + 1,
(size_t)curbuf->b_ml.ml_line_len - oldlen - 1);
#endif
curbuf->b_ml.ml_line_len -= count;
curbuf->b_ml.ml_line_textlen = 0;
}
// mark the buffer as changed and prepare for displaying
inserted_bytes(lnum, col, -count);
return OK;
}
/*
* open_line: Add a new line below or above the current line.
*
* For MODE_VREPLACE state, we only add a new line when we get to the end of
* the file, otherwise we just start replacing the next line.
*
* Caller must take care of undo. Since MODE_VREPLACE may affect any number of
* lines however, it may call u_save_cursor() again when starting to change a
* new line.
* "flags": OPENLINE_DELSPACES delete spaces after cursor
* OPENLINE_DO_COM format comments
* OPENLINE_KEEPTRAIL keep trailing spaces
* OPENLINE_MARKFIX adjust mark positions after the line break
* OPENLINE_COM_LIST format comments with list or 2nd line indent
*
* "second_line_indent": indent for after ^^D in Insert mode or if flag
* OPENLINE_COM_LIST
* "did_do_comment" is set to TRUE when intentionally putting the comment
* leader in front of the new line.
*
* Return OK for success, FAIL for failure
*/
int
open_line(
int dir, // FORWARD or BACKWARD
int flags,
int second_line_indent,
int *did_do_comment UNUSED)
{
char_u *saved_line; // copy of the original line
char_u *next_line = NULL; // copy of the next line
char_u *p_extra = NULL; // what goes to next line
int less_cols = 0; // less columns for mark in new line
int less_cols_off = 0; // columns to skip for mark and
// textprop adjustment
pos_T old_cursor; // old cursor position
int newcol = 0; // new cursor column
int newindent = 0; // auto-indent of the new line
int n;
int trunc_line = FALSE; // truncate current line afterwards
int retval = FAIL; // return value
int extra_len = 0; // length of p_extra string
int lead_len; // length of comment leader
int comment_start = 0; // start index of the comment leader
char_u *lead_flags; // position in 'comments' for comment leader
char_u *leader = NULL; // copy of comment leader
char_u *allocated = NULL; // allocated memory
char_u *p;
int saved_char = NUL; // init for GCC
pos_T *pos;
int do_cindent;
int do_si = may_do_si();
int no_si = FALSE; // reset did_si afterwards
int first_char = NUL; // init for GCC
int vreplace_mode;
int did_append; // appended a new line
int saved_pi = curbuf->b_p_pi; // copy of preserveindent setting
#ifdef FEAT_PROP_POPUP
int at_eol; // cursor after last character
#endif
// make a copy of the current line so we can mess with it
saved_line = vim_strnsave(ml_get_curline(), ml_get_curline_len());
if (saved_line == NULL) // out of memory!
return FALSE;
#ifdef FEAT_PROP_POPUP
at_eol = curwin->w_cursor.col >= (int)ml_get_curline_len();
#endif
if (State & VREPLACE_FLAG)
{
// With MODE_VREPLACE we make a copy of the next line, which we will be
// starting to replace. First make the new line empty and let vim play
// with the indenting and comment leader to its heart's content. Then
// we grab what it ended up putting on the new line, put back the
// original line, and call ins_char() to put each new character onto
// the line, replacing what was there before and pushing the right
// stuff onto the replace stack. -- webb.
if (curwin->w_cursor.lnum < orig_line_count)
next_line = vim_strnsave(ml_get(curwin->w_cursor.lnum + 1), ml_get_len(curwin->w_cursor.lnum + 1));
else
next_line = vim_strsave((char_u *)"");
if (next_line == NULL) // out of memory!
goto theend;
// In MODE_VREPLACE state, a NL replaces the rest of the line, and
// starts replacing the next line, so push all of the characters left
// on the line onto the replace stack. We'll push any other characters
// that might be replaced at the start of the next line (due to
// autoindent etc) a bit later.
replace_push(NUL); // Call twice because BS over NL expects it
replace_push(NUL);
p = saved_line + curwin->w_cursor.col;
while (*p != NUL)
{
if (has_mbyte)
p += replace_push_mb(p);
else
replace_push(*p++);
}
saved_line[curwin->w_cursor.col] = NUL;
}
if ((State & MODE_INSERT) && (State & VREPLACE_FLAG) == 0)
{
p_extra = saved_line + curwin->w_cursor.col;
if (do_si) // need first char after new line break
{
p = skipwhite(p_extra);
first_char = *p;
}
extra_len = (int)STRLEN(p_extra);
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); // cannot do "U" command when adding lines
did_si = FALSE;
ai_col = 0;
// If we just did an auto-indent, then we didn't type anything on
// the prior line, and it should be truncated. Do this even if 'ai' is not
// set because automatically inserting a comment leader also sets did_ai.
if (dir == FORWARD && did_ai)
trunc_line = TRUE;
// If 'autoindent' and/or 'smartindent' is set, try to figure out what
// indent to use for the new line.
if (curbuf->b_p_ai || do_si)
{
// count white space on current line
#ifdef FEAT_VARTABS
newindent = get_indent_str_vtab(saved_line, curbuf->b_p_ts,
curbuf->b_p_vts_array, FALSE);
#else
newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts, FALSE);
#endif
if (newindent == 0 && !(flags & OPENLINE_COM_LIST))
newindent = second_line_indent; // for ^^D command in insert mode
// Do smart indenting.
// In insert/replace mode (only when dir == FORWARD)
// we may move some text to the next line. If it starts with '{'
// don't add an indent. Fixes inserting a NL before '{' in line
// "if (condition) {"
if (!trunc_line && do_si && *saved_line != NUL
&& (p_extra == NULL || first_char != '{'))
{
char_u *ptr;
char_u last_char;
old_cursor = curwin->w_cursor;
ptr = saved_line;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (dir == FORWARD)
{
// Skip preprocessor directives, unless they are
// recognised as comments.
if ( lead_len == 0 && ptr[0] == '#')
{
while (ptr[0] == '#' && curwin->w_cursor.lnum > 1)
ptr = ml_get(--curwin->w_cursor.lnum);
newindent = get_indent();
}
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (lead_len > 0)
{
// This case gets the following right:
// /*
// * A comment (read '\' as '/').
// */
// #define IN_THE_WAY
// This should line up here;
p = skipwhite(ptr);
if (p[0] == '/' && p[1] == '*')
p++;
if (p[0] == '*')
{
for (p++; *p; p++)
{
if (p[0] == '/' && p[-1] == '*')
{
// End of C comment, indent should line up
// with the line containing the start of
// the comment.
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, NUL)) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
break;
}
// this may make "ptr" invalid, get it again
ptr = ml_get(curwin->w_cursor.lnum);
p = ptr + curwin->w_cursor.col;
}
}
}
}
else // Not a comment line
{
// Find last non-blank in line
p = ptr + STRLEN(ptr) - 1;
while (p > ptr && VIM_ISWHITE(*p))
--p;
last_char = *p;
// find the character just before the '{' or ';'
if (last_char == '{' || last_char == ';')
{
if (p > ptr)
--p;
while (p > ptr && VIM_ISWHITE(*p))
--p;
}
// Try to catch lines that are split over multiple
// lines. eg:
// if (condition &&
// condition) {
// Should line up here!
// }
if (*p == ')')
{
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, '(')) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
ptr = ml_get_curline();
}
}
// If last character is '{' do indent, without
// checking for "if" and the like.
if (last_char == '{')
{
did_si = TRUE; // do indent
no_si = TRUE; // don't delete it when '{' typed
}
// Look for "if" and the like, use 'cinwords'.
// Don't do this if the previous line ended in ';' or
// '}'.
else if (last_char != ';' && last_char != '}'
&& cin_is_cinword(ptr))
did_si = TRUE;
}
}
else // dir == BACKWARD
{
// Skip preprocessor directives, unless they are
// recognised as comments.
if (lead_len == 0 && ptr[0] == '#')
{
int was_backslashed = FALSE;
while ((ptr[0] == '#' || was_backslashed) &&
curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
{
if (*ptr && ptr[STRLEN(ptr) - 1] == '\\')
was_backslashed = TRUE;
else
was_backslashed = FALSE;
ptr = ml_get(++curwin->w_cursor.lnum);
}
if (was_backslashed)
newindent = 0; // Got to end of file
else
newindent = get_indent();
}
p = skipwhite(ptr);
if (*p == '}') // if line starts with '}': do indent
did_si = TRUE;
else // can delete indent when '{' typed
can_si_back = TRUE;
}
curwin->w_cursor = old_cursor;
}
if (do_si)
can_si = TRUE;
did_ai = TRUE;
}
// May do indenting after opening a new line.
do_cindent = !p_paste && (curbuf->b_p_cin
#ifdef FEAT_EVAL
|| *curbuf->b_p_inde != NUL
#endif
)
&& in_cinkeys(dir == FORWARD
? KEY_OPEN_FORW
: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum));
// Find out if the current line starts with a comment leader.
// This may then be inserted in front of the new line.
end_comment_pending = NUL;
if (flags & OPENLINE_DO_COM)
{
lead_len = get_leader_len(saved_line, &lead_flags,
dir == BACKWARD, TRUE);
if (lead_len == 0 && curbuf->b_p_cin && do_cindent && dir == FORWARD
&& (!has_format_option(FO_NO_OPEN_COMS)
|| (flags & OPENLINE_FORMAT)))
{
// Check for a line comment after code.
comment_start = check_linecomment(saved_line);
if (comment_start != MAXCOL)
{
lead_len = get_leader_len(saved_line + comment_start,
&lead_flags, FALSE, TRUE);
if (lead_len != 0)
{
lead_len += comment_start;
if (did_do_comment != NULL)
*did_do_comment = TRUE;
}
}
}
}
else
lead_len = 0;
if (lead_len > 0)
{
char_u *lead_repl = NULL; // replaces comment leader
int lead_repl_len = 0; // length of *lead_repl
char_u lead_middle[COM_MAX_LEN]; // middle-comment string
char_u lead_end[COM_MAX_LEN]; // end-comment string
char_u *comment_end = NULL; // where lead_end has been found
int extra_space = FALSE; // append extra space
int current_flag;
int require_blank = FALSE; // requires blank after middle
char_u *p2;
// If the comment leader has the start, middle or end flag, it may not
// be used or may be replaced with the middle leader.
for (p = lead_flags; *p && *p != ':'; ++p)
{
if (*p == COM_BLANK)
{
require_blank = TRUE;
continue;
}
if (*p == COM_START || *p == COM_MIDDLE)
{
current_flag = *p;
if (*p == COM_START)
{
// Doing "O" on a start of comment does not insert leader.
if (dir == BACKWARD)
{
lead_len = 0;
break;
}
// find start of middle part
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
require_blank = FALSE;
}
// Isolate the strings of the middle and end leader.
while (*p && p[-1] != ':') // find end of middle flags
{
if (*p == COM_BLANK)
require_blank = TRUE;
++p;
}
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
while (*p && p[-1] != ':') // find end of end flags
{
// Check whether we allow automatic ending of comments
if (*p == COM_AUTO_END)
end_comment_pending = -1; // means we want to set it
++p;
}
n = copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
if (end_comment_pending == -1) // we can set it now
end_comment_pending = lead_end[n - 1];
// If the end of the comment is in the same line, don't use
// the comment leader.
if (dir == FORWARD)
{
for (p = saved_line + lead_len; *p; ++p)
if (STRNCMP(p, lead_end, n) == 0)
{
comment_end = p;
lead_len = 0;
break;
}
}
// Doing "o" on a start of comment inserts the middle leader.
if (lead_len > 0)
{
if (current_flag == COM_START)
{
lead_repl = lead_middle;
lead_repl_len = (int)STRLEN(lead_middle);
}
// If we have hit RETURN immediately after the start
// comment leader, then put a space after the middle
// comment leader on the next line.
if (!VIM_ISWHITE(saved_line[lead_len - 1])
&& ((p_extra != NULL
&& (int)curwin->w_cursor.col == lead_len)
|| (p_extra == NULL
&& saved_line[lead_len] == NUL)
|| require_blank))
extra_space = TRUE;
}
break;
}
if (*p == COM_END)
{
// Doing "o" on the end of a comment does not insert leader.
// Remember where the end is, might want to use it to find the
// start (for C-comments).
if (dir == FORWARD)
{
comment_end = skipwhite(saved_line);
lead_len = 0;
break;
}
// Doing "O" on the end of a comment inserts the middle leader.
// Find the string for the middle leader, searching backwards.
while (p > curbuf->b_p_com && *p != ',')
--p;
for (lead_repl = p; lead_repl > curbuf->b_p_com
&& lead_repl[-1] != ':'; --lead_repl)
;
lead_repl_len = (int)(p - lead_repl);
// We can probably always add an extra space when doing "O" on
// the comment-end
extra_space = TRUE;
// Check whether we allow automatic ending of comments
for (p2 = p; *p2 && *p2 != ':'; p2++)
{
if (*p2 == COM_AUTO_END)
end_comment_pending = -1; // means we want to set it
}
if (end_comment_pending == -1)
{
// Find last character in end-comment string
while (*p2 && *p2 != ',')
p2++;
end_comment_pending = p2[-1];
}
break;
}
if (*p == COM_FIRST)
{
// Comment leader for first line only: Don't repeat leader
// when using "O", blank out leader when using "o".
if (dir == BACKWARD)
lead_len = 0;
else
{
lead_repl = (char_u *)"";
lead_repl_len = 0;
}
break;
}
}
if (lead_len)
{
// allocate buffer (may concatenate p_extra later)
leader = alloc(lead_len + lead_repl_len + extra_space + extra_len
+ (second_line_indent > 0 ? second_line_indent : 0) + 1);
allocated = leader; // remember to free it later
if (leader == NULL)
lead_len = 0;
else
{
int li;
vim_strncpy(leader, saved_line, lead_len);
// TODO: handle multi-byte and double width chars
for (li = 0; li < comment_start; ++li)
if (!VIM_ISWHITE(leader[li]))
leader[li] = ' ';
// Replace leader with lead_repl, right or left adjusted
if (lead_repl != NULL)
{
int c = 0;
int off = 0;
for (p = lead_flags; *p != NUL && *p != ':'; )
{
if (*p == COM_RIGHT || *p == COM_LEFT)
c = *p++;
else if (VIM_ISDIGIT(*p) || *p == '-')
off = getdigits(&p);
else
++p;
}
if (c == COM_RIGHT) // right adjusted leader
{
// find last non-white in the leader to line up with
for (p = leader + lead_len - 1; p > leader
&& VIM_ISWHITE(*p); --p)
;
++p;
// Compute the length of the replaced characters in
// screen characters, not bytes.
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int old_size = 0;
char_u *endp = p;
int l;
while (old_size < repl_size && p > leader)
{
MB_PTR_BACK(leader, p);
old_size += ptr2cells(p);
}
l = lead_repl_len - (int)(endp - p);
if (l != 0)
mch_memmove(endp + l, endp,
(size_t)((leader + lead_len) - endp));
lead_len += l;
}
mch_memmove(p, lead_repl, (size_t)lead_repl_len);
if (p + lead_repl_len > leader + lead_len)
p[lead_repl_len] = NUL;
// blank-out any other chars from the old leader.
while (--p >= leader)
{
int l = mb_head_off(leader, p);
if (l > 1)
{
p -= l;
if (ptr2cells(p) > 1)
{
p[1] = ' ';
--l;
}
mch_memmove(p + 1, p + l + 1,
(size_t)((leader + lead_len) - (p + l + 1)));
lead_len -= l;
*p = ' ';
}
else if (!VIM_ISWHITE(*p))
*p = ' ';
}
}
else // left adjusted leader
{
p = skipwhite(leader);
// Compute the length of the replaced characters in
// screen characters, not bytes. Move the part that is
// not to be overwritten.
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int i;
int l;
for (i = 0; i < lead_len && p[i] != NUL; i += l)
{
l = (*mb_ptr2len)(p + i);
if (vim_strnsize(p, i + l) > repl_size)
break;
}
if (i != lead_repl_len)
{
mch_memmove(p + lead_repl_len, p + i,
(size_t)(lead_len - i - (p - leader)));
lead_len += lead_repl_len - i;
}
}
mch_memmove(p, lead_repl, (size_t)lead_repl_len);
// Replace any remaining non-white chars in the old
// leader by spaces. Keep Tabs, the indent must
// remain the same.
for (p += lead_repl_len; p < leader + lead_len; ++p)
if (!VIM_ISWHITE(*p))
{
// Don't put a space before a TAB.
if (p + 1 < leader + lead_len && p[1] == TAB)
{
--lead_len;
mch_memmove(p, p + 1,
(leader + lead_len) - p);
}
else
{
int l = (*mb_ptr2len)(p);
if (l > 1)
{
if (ptr2cells(p) > 1)
{
// Replace a double-wide char with
// two spaces
--l;
*p++ = ' ';
}
mch_memmove(p + 1, p + l,
(leader + lead_len) - p);
lead_len -= l - 1;
}
*p = ' ';
}
}
*p = NUL;
}
// Recompute the indent, it may have changed.
if (curbuf->b_p_ai || do_si)
#ifdef FEAT_VARTABS
newindent = get_indent_str_vtab(leader, curbuf->b_p_ts,
curbuf->b_p_vts_array, FALSE);
#else
newindent = get_indent_str(leader,
(int)curbuf->b_p_ts, FALSE);
#endif
// Add the indent offset
if (newindent + off < 0)
{
off = -newindent;
newindent = 0;
}
else
newindent += off;
// Correct trailing spaces for the shift, so that
// alignment remains equal.
while (off > 0 && lead_len > 0
&& leader[lead_len - 1] == ' ')
{
// Don't do it when there is a tab before the space
if (vim_strchr(skipwhite(leader), '\t') != NULL)
break;
--lead_len;
--off;
}
// If the leader ends in white space, don't add an
// extra space
if (lead_len > 0 && VIM_ISWHITE(leader[lead_len - 1]))
extra_space = FALSE;
leader[lead_len] = NUL;
}
if (extra_space)
{
leader[lead_len++] = ' ';
leader[lead_len] = NUL;
}
newcol = lead_len;
// if a new indent will be set below, remove the indent that
// is in the comment leader
if (newindent || did_si)
{
while (lead_len && VIM_ISWHITE(*leader))
{
--lead_len;
--newcol;
++leader;
}
}
}
did_si = can_si = FALSE;
}
else if (comment_end != NULL)
{
// We have finished a comment, so we don't use the leader.
// If this was a C-comment and 'ai' or 'si' is set do a normal
// indent to align with the line containing the start of the
// comment.
if (comment_end[0] == '*' && comment_end[1] == '/' &&
(curbuf->b_p_ai || do_si))
{
old_cursor = curwin->w_cursor;
curwin->w_cursor.col = (colnr_T)(comment_end - saved_line);
if ((pos = findmatch(NULL, NUL)) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
curwin->w_cursor = old_cursor;
}
}
}
// (State == MODE_INSERT || State == MODE_REPLACE), only when dir == FORWARD
if (p_extra != NULL)
{
*p_extra = saved_char; // restore char that NUL replaced
// When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first
// non-blank.
//
// When in MODE_REPLACE state, put the deleted blanks on the replace
// stack, preceded by a NUL, so they can be put back when a BS is
// entered.
if (REPLACE_NORMAL(State))
replace_push(NUL); // end of extra blanks
if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES))
{
while ((*p_extra == ' ' || *p_extra == '\t')
&& (!enc_utf8
|| !utf_iscomposing(utf_ptr2char(p_extra + 1))))
{
if (REPLACE_NORMAL(State))
replace_push(*p_extra);
++p_extra;
++less_cols_off;
}
}
// columns for marks adjusted for removed columns
less_cols = (int)(p_extra - saved_line);
}
if (p_extra == NULL)
p_extra = (char_u *)""; // append empty line
// concatenate leader and p_extra, if there is a leader
if (lead_len)
{
if (flags & OPENLINE_COM_LIST && second_line_indent > 0)
{
int i;
int padding = second_line_indent
- (newindent + (int)STRLEN(leader));
// Here whitespace is inserted after the comment char.
// Below, set_indent(newindent, SIN_INSERT) will insert the
// whitespace needed before the comment char.
for (i = 0; i < padding; i++)
{
STRCAT(leader, " ");
less_cols--;
newcol++;
}
}
STRCAT(leader, p_extra);
p_extra = leader;
did_ai = TRUE; // So truncating blanks works with comments
less_cols -= lead_len;
}
else
end_comment_pending = NUL; // turns out there was no leader
old_cursor = curwin->w_cursor;
if (dir == BACKWARD)
--curwin->w_cursor.lnum;
if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count)
{
if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE)
== FAIL)
goto theend;
// Postpone calling changed_lines(), because it would mess up folding
// with markers.
mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L);
did_append = TRUE;
#ifdef FEAT_PROP_POPUP
if ((State & MODE_INSERT) && (State & VREPLACE_FLAG) == 0)
// Properties after the split move to the next line.
adjust_props_for_split(curwin->w_cursor.lnum, curwin->w_cursor.lnum,
curwin->w_cursor.col + 1, 0, at_eol);
#endif
}
else
{
// In MODE_VREPLACE state we are starting to replace the next line.
curwin->w_cursor.lnum++;
if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed)
{
// In case we NL to a new line, BS to the previous one, and NL
// again, we don't want to save the new line for undo twice.
(void)u_save_cursor(); // errors are ignored!
vr_lines_changed++;
}
ml_replace(curwin->w_cursor.lnum, p_extra, TRUE);
changed_bytes(curwin->w_cursor.lnum, 0);
curwin->w_cursor.lnum--;
did_append = FALSE;
}
if (newindent || did_si)
{
++curwin->w_cursor.lnum;
if (did_si)
{
int sw = (int)get_sw_value(curbuf);
if (p_sr)
newindent -= newindent % sw;
newindent += sw;
}
// Copy the indent
if (curbuf->b_p_ci)
{
(void)copy_indent(newindent, saved_line);
// Set the 'preserveindent' option so that any further screwing
// with the line doesn't entirely destroy our efforts to preserve
// it. It gets restored at the function end.
curbuf->b_p_pi = TRUE;
}
else
(void)set_indent(newindent, SIN_INSERT);
less_cols -= curwin->w_cursor.col;
ai_col = curwin->w_cursor.col;
// In MODE_REPLACE state, for each character in the new indent, there
// must be a NUL on the replace stack, for when it is deleted with BS
if (REPLACE_NORMAL(State))
for (n = 0; n < (int)curwin->w_cursor.col; ++n)
replace_push(NUL);
newcol += curwin->w_cursor.col;
if (no_si)
did_si = FALSE;
}
// In MODE_REPLACE state, for each character in the extra leader, there
// must be a NUL on the replace stack, for when it is deleted with BS.
if (REPLACE_NORMAL(State))
while (lead_len-- > 0)
replace_push(NUL);
curwin->w_cursor = old_cursor;
if (dir == FORWARD)
{
if (trunc_line || (State & MODE_INSERT))
{
// truncate current line at cursor
saved_line[curwin->w_cursor.col] = NUL;
// Remove trailing white space, unless OPENLINE_KEEPTRAIL used.
if (trunc_line && !(flags & OPENLINE_KEEPTRAIL))
truncate_spaces(saved_line);
ml_replace(curwin->w_cursor.lnum, saved_line, FALSE);
saved_line = NULL;
if (did_append)
{
changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
curwin->w_cursor.lnum + 1, 1L);
did_append = FALSE;
// Move marks after the line break to the new line.
if (flags & OPENLINE_MARKFIX)
mark_col_adjust(curwin->w_cursor.lnum,
curwin->w_cursor.col + less_cols_off,
1L, (long)-less_cols, 0);
#ifdef FEAT_PROP_POPUP
// Keep into account the deleted blanks on the new line.
if (curbuf->b_has_textprop && less_cols_off != 0)
adjust_prop_columns(curwin->w_cursor.lnum + 1, 0,
-less_cols_off, 0);
#endif
}
else
changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col);
}
// Put the cursor on the new line. Careful: the scrollup() above may
// have moved w_cursor, we must use old_cursor.
curwin->w_cursor.lnum = old_cursor.lnum + 1;
}
if (did_append)
changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L);
curwin->w_cursor.col = newcol;
curwin->w_cursor.coladd = 0;
// In MODE_VREPLACE state, we are handling the replace stack ourselves, so
// stop fixthisline() from doing it (via change_indent()) by telling it
// we're in normal MODE_INSERT state.
if (State & VREPLACE_FLAG)
{
vreplace_mode = State; // So we know to put things right later
State = MODE_INSERT;
}
else
vreplace_mode = 0;
if (!p_paste)
{
if (leader == NULL
&& !use_indentexpr_for_lisp()
&& curbuf->b_p_lisp
&& curbuf->b_p_ai)
{
// do lisp indenting
fixthisline(get_lisp_indent);
ai_col = (colnr_T)getwhitecols_curline();
}
else if (do_cindent || (curbuf->b_p_ai && use_indentexpr_for_lisp()))
{
// do 'cindent' or 'indentexpr' indenting
do_c_expr_indent();
ai_col = (colnr_T)getwhitecols_curline();
}
}
if (vreplace_mode != 0)
State = vreplace_mode;
// Finally, MODE_VREPLACE gets the stuff on the new line, then puts back
// the original line, and inserts the new stuff char by char, pushing old
// stuff onto the replace stack (via ins_char()).
if (State & VREPLACE_FLAG)
{
// Put new line in p_extra
p_extra = vim_strnsave(ml_get_curline(), ml_get_curline_len());
if (p_extra == NULL)
goto theend;
// Put back original line
ml_replace(curwin->w_cursor.lnum, next_line, FALSE);
// Insert new stuff into line again
curwin->w_cursor.col = 0;
curwin->w_cursor.coladd = 0;
ins_bytes(p_extra); // will call changed_bytes()
vim_free(p_extra);
next_line = NULL;
}
retval = OK; // success!
theend:
curbuf->b_p_pi = saved_pi;
vim_free(saved_line);
vim_free(next_line);
vim_free(allocated);
return retval;
}
/*
* Delete from cursor to end of line.
* Caller must have prepared for undo.
* If "fixpos" is TRUE fix the cursor position when done.
*
* Return FAIL for failure, OK otherwise.
*/
int
truncate_line(int fixpos)
{
char_u *newp;
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
char_u *old_line;
int deleted;
old_line = ml_get(lnum);
if (col == 0)
newp = vim_strsave((char_u *)"");
else
newp = vim_strnsave(old_line, col);
deleted = (int)ml_get_len(lnum) - col;
if (newp == NULL)
return FAIL;
ml_replace(lnum, newp, FALSE);
// mark the buffer as changed and prepare for displaying
inserted_bytes(lnum, curwin->w_cursor.col, -deleted);
// If "fixpos" is TRUE we don't want to end up positioned at the NUL.
if (fixpos && curwin->w_cursor.col > 0)
--curwin->w_cursor.col;
return OK;
}
/*
* Delete "nlines" lines at the cursor.
* Saves the lines for undo first if "undo" is TRUE.
*/
void
del_lines(long nlines, int undo)
{
long n;
linenr_T first = curwin->w_cursor.lnum;
if (nlines <= 0)
return;
// save the deleted lines for undo
if (undo && u_savedel(first, nlines) == FAIL)
return;
for (n = 0; n < nlines; )
{
if (curbuf->b_ml.ml_flags & ML_EMPTY) // nothing to delete
break;
ml_delete_flags(first, ML_DEL_MESSAGE);
++n;
// If we delete the last line in the file, stop
if (first > curbuf->b_ml.ml_line_count)
break;
}
// Correct the cursor position before calling deleted_lines_mark(), it may
// trigger a callback to display the cursor.
curwin->w_cursor.col = 0;
check_cursor_lnum();
// adjust marks, mark the buffer as changed and prepare for displaying
deleted_lines_mark(first, n);
}
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