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patch 8.1.0039: cannot easily delete lines in another buffer

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Problem:    Cannot easily delete lines in another buffer.
Solution:   Add deletebufline().
This commit is contained in:
Bram Moolenaar
2018-06-07 18:17:46 +02:00
parent 680c99b2ef
commit d79a26219d
4 changed files with 148 additions and 13 deletions
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118
src/evalfunc.c
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@@ -125,6 +125,7 @@ static void f_cscope_connection(typval_T *argvars, typval_T *rettv);
static void f_cursor(typval_T *argsvars, typval_T *rettv);
static void f_deepcopy(typval_T *argvars, typval_T *rettv);
static void f_delete(typval_T *argvars, typval_T *rettv);
static void f_deletebufline(typval_T *argvars, typval_T *rettv);
static void f_did_filetype(typval_T *argvars, typval_T *rettv);
static void f_diff_filler(typval_T *argvars, typval_T *rettv);
static void f_diff_hlID(typval_T *argvars, typval_T *rettv);
@@ -577,6 +578,7 @@ static struct fst
{"cursor", 1, 3, f_cursor},
{"deepcopy", 1, 2, f_deepcopy},
{"delete", 1, 2, f_delete},
{"deletebufline", 2, 3, f_deletebufline},
{"did_filetype", 0, 0, f_did_filetype},
{"diff_filler", 1, 1, f_diff_filler},
{"diff_hlID", 2, 2, f_diff_hlID},
@@ -1209,6 +1211,24 @@ get_tv_lnum_buf(typval_T *argvars, buf_T *buf)
return (linenr_T)get_tv_number_chk(&argvars[0], NULL);
}
/*
* If there is a window for "curbuf", make it the current window.
*/
static void
find_win_for_curbuf(void)
{
wininfo_T *wip;
for (wip = curbuf->b_wininfo; wip != NULL; wip = wip->wi_next)
{
if (wip->wi_win != NULL)
{
curwin = wip->wi_win;
break;
}
}
}
/*
* Set line or list of lines in buffer "buf".
*/
@@ -1241,19 +1261,10 @@ set_buffer_lines(
if (!is_curbuf)
{
wininfo_T *wip;
curbuf_save = curbuf;
curwin_save = curwin;
curbuf = buf;
for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
{
if (wip->wi_win != NULL)
{
curwin = wip->wi_win;
break;
}
}
find_win_for_curbuf();
}
if (append)
@@ -2807,6 +2818,93 @@ f_delete(typval_T *argvars, typval_T *rettv)
EMSG2(_(e_invexpr2), flags);
}
/*
* "deletebufline()" function
*/
static void
f_deletebufline(argvars, rettv)
typval_T *argvars;
typval_T *rettv;
{
buf_T *buf;
linenr_T first, last;
linenr_T lnum;
long count;
int is_curbuf;
buf_T *curbuf_save = NULL;
win_T *curwin_save = NULL;
tabpage_T *tp;
win_T *wp;
buf = get_buf_tv(&argvars[0], FALSE);
if (buf == NULL)
{
rettv->vval.v_number = 1; /* FAIL */
return;
}
is_curbuf = buf == curbuf;
first = get_tv_lnum_buf(&argvars[1], buf);
if (argvars[2].v_type != VAR_UNKNOWN)
last = get_tv_lnum_buf(&argvars[2], buf);
else
last = first;
if (buf->b_ml.ml_mfp == NULL || first < 1
|| first > buf->b_ml.ml_line_count || last < first)
{
rettv->vval.v_number = 1; /* FAIL */
return;
}
if (!is_curbuf)
{
curbuf_save = curbuf;
curwin_save = curwin;
curbuf = buf;
find_win_for_curbuf();
}
if (last > curbuf->b_ml.ml_line_count)
last = curbuf->b_ml.ml_line_count;
count = last - first + 1;
// When coming here from Insert mode, sync undo, so that this can be
// undone separately from what was previously inserted.
if (u_sync_once == 2)
{
u_sync_once = 1; // notify that u_sync() was called
u_sync(TRUE);
}
if (u_save(first - 1, last + 1) == FAIL)
{
rettv->vval.v_number = 1; /* FAIL */
return;
}
for (lnum = first; lnum <= last; ++lnum)
ml_delete(first, TRUE);
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_buffer == buf)
{
if (wp->w_cursor.lnum > last)
wp->w_cursor.lnum -= count;
else if (wp->w_cursor.lnum> first)
wp->w_cursor.lnum = first;
if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count)
wp->w_cursor.lnum = wp->w_buffer->b_ml.ml_line_count;
}
check_cursor_col();
deleted_lines_mark(first, count);
if (!is_curbuf)
{
curbuf = curbuf_save;
curwin = curwin_save;
}
}
/*
* "did_filetype()" function
*/