static const char *cursors_select_skip(Vis *vis, const char *keys, const Arg *arg) {
View *view = vis_view(vis);
Cursor *cursor = view_cursor(view);
keys = cursors_select_next(vis, keys, arg);
if (cursor != view_cursor(view))
view_cursors_dispose(cursor);
return keys;
}
static bool cmd_guard(Vis *vis, Win *win, Command *cmd, const char *argv[], Cursor *cur, Filerange *range) {
if (!win)
return false;
bool match = !text_search_range_forward(win->file->text, range->start,
text_range_size(range), cmd->regex, 0, NULL, 0);
if (match ^ (argv[0][0] == 'v'))
return sam_execute(vis, win, cmd->cmd, cur, range);
view_cursors_dispose(cur);
return true;
}
void action_do(Vis *vis, Action *a) {
Win *win = vis->win;
Text *txt = win->file->text;
View *view = win->view;
if (a->op == &vis_operators[VIS_OP_FILTER] && !vis->mode->visual)
vis_mode_switch(vis, VIS_MODE_VISUAL_LINE);
int count = MAX(a->count, 1);
bool repeatable = a->op && !vis->macro_operator;
bool multiple_cursors = view_cursors_multiple(view);
bool linewise = !(a->type & CHARWISE) && (
a->type & LINEWISE || (a->movement && a->movement->type & LINEWISE) ||
vis->mode == &vis_modes[VIS_MODE_VISUAL_LINE]);
for (Cursor *cursor = view_cursors(view), *next; cursor; cursor = next) {
next = view_cursors_next(cursor);
size_t pos = view_cursors_pos(cursor);
Register *reg = multiple_cursors ? view_cursors_register(cursor) : a->reg;
if (!reg)
reg = &vis->registers[win->file->internal ? VIS_REG_PROMPT : VIS_REG_DEFAULT];
OperatorContext c = {
.count = count,
.pos = pos,
.newpos = EPOS,
.range = text_range_empty(),
.reg = reg,
.linewise = linewise,
.arg = &a->arg,
};
if (a->movement) {
size_t start = pos;
for (int i = 0; i < count; i++) {
size_t pos_prev = pos;
if (a->movement->txt)
pos = a->movement->txt(txt, pos);
else if (a->movement->cur)
pos = a->movement->cur(cursor);
else if (a->movement->file)
pos = a->movement->file(vis, vis->win->file, pos);
else if (a->movement->vis)
pos = a->movement->vis(vis, txt, pos);
else if (a->movement->view)
pos = a->movement->view(vis, view);
else if (a->movement->win)
pos = a->movement->win(vis, win, pos);
else if (a->movement->user)
pos = a->movement->user(vis, win, a->movement->data, pos);
if (pos == EPOS || a->movement->type & IDEMPOTENT || pos == pos_prev)
break;
}
if (pos == EPOS) {
c.range.start = start;
c.range.end = start;
pos = start;
} else {
c.range = text_range_new(start, pos);
c.newpos = pos;
}
if (!a->op) {
if (a->movement->type & CHARWISE)
view_cursors_scroll_to(cursor, pos);
else
view_cursors_to(cursor, pos);
if (vis->mode->visual)
c.range = view_cursors_selection_get(cursor);
if (a->movement->type & JUMP)
window_jumplist_add(win, pos);
else
window_jumplist_invalidate(win);
} else if (a->movement->type & INCLUSIVE ||
(linewise && a->movement->type & LINEWISE_INCLUSIVE)) {
c.range.end = text_char_next(txt, c.range.end);
}
} else if (a->textobj) {
if (vis->mode->visual)
c.range = view_cursors_selection_get(cursor);
else
c.range.start = c.range.end = pos;
for (int i = 0; i < count; i++) {
Filerange r = text_range_empty();
if (a->textobj->txt)
r = a->textobj->txt(txt, pos);
else if (a->textobj->vis)
r = a->textobj->vis(vis, txt, pos);
else if (a->textobj->user)
r = a->textobj->user(vis, win, a->textobj->data, pos);
if (!text_range_valid(&r))
break;
if (a->textobj->type & OUTER) {
r.start--;
r.end++;
}
if (a->textobj->type & SPLIT)
c.range = r;
else
c.range = text_range_union(&c.range, &r);
if (i < count - 1)
pos = c.range.end + 1;
}
} else if (vis->mode->visual) {
c.range = view_cursors_selection_get(cursor);
if (!text_range_valid(&c.range))
c.range.start = c.range.end = pos;
}
if (linewise && vis->mode != &vis_modes[VIS_MODE_VISUAL])
c.range = text_range_linewise(txt, &c.range);
if (vis->mode->visual) {
view_cursors_selection_set(cursor, &c.range);
if (vis->mode == &vis_modes[VIS_MODE_VISUAL] || a->textobj)
view_cursors_selection_sync(cursor);
}
if (a->op) {
size_t pos = a->op->func(vis, txt, &c);
if (pos == EPOS) {
view_cursors_dispose(cursor);
} else if (pos <= text_size(txt)) {
/* moving the cursor will affect the selection.
* because we want to be able to later restore
* the old selection we update it again before
* leaving visual mode.
*/
Filerange sel = view_cursors_selection_get(cursor);
view_cursors_to(cursor, pos);
if (vis->mode->visual) {
if (sel.start == EPOS && sel.end == EPOS)
sel = c.range;
else if (sel.start == EPOS)
sel = text_range_new(c.range.start, sel.end);
else if (sel.end == EPOS)
sel = text_range_new(c.range.start, sel.start);
if (vis->mode == &vis_modes[VIS_MODE_VISUAL_LINE])
sel = text_range_linewise(txt, &sel);
view_cursors_selection_set(cursor, &sel);
}
}
}
}
if (a->op) {
/* we do not support visual repeat, still do something resonable */
if (vis->mode->visual && !a->movement && !a->textobj)
a->movement = &vis_motions[VIS_MOVE_NOP];
/* operator implementations must not change the mode,
* they might get called multiple times (once for every cursor)
*/
if (a->op == &vis_operators[VIS_OP_INSERT] || a->op == &vis_operators[VIS_OP_CHANGE]) {
vis_mode_switch(vis, VIS_MODE_INSERT);
} else if (a->op == &vis_operators[VIS_OP_REPLACE]) {
vis_mode_switch(vis, VIS_MODE_REPLACE);
} else if (a->op == &vis_operators[VIS_OP_FILTER]) {
if (a->arg.s)
vis_cmd(vis, a->arg.s);
else
vis_prompt_show(vis, ":|");
} else if (vis->mode == &vis_modes[VIS_MODE_OPERATOR_PENDING]) {
mode_set(vis, vis->mode_prev);
} else if (vis->mode->visual) {
vis_mode_switch(vis, VIS_MODE_NORMAL);
}
text_snapshot(txt);
vis_draw(vis);
}
if (a != &vis->action_prev) {
if (repeatable) {
if (!a->macro)
a->macro = vis->macro_operator;
vis->action_prev = *a;
}
action_reset(a);
}
}
void action_reset(Action *a) {
memset(a, 0, sizeof(*a));
a->count = VIS_COUNT_UNKNOWN;
}
static const char *cursors_remove(Vis *vis, const char *keys, const Arg *arg) {
View *view = vis_view(vis);
view_cursors_dispose(view_cursor(view));
view_cursor_to(view, view_cursor_get(view));
return keys;
}
static bool cmd_extract(Vis *vis, Win *win, Command *cmd, const char *argv[], Cursor *cur, Filerange *range) {
if (!win)
return false;
bool ret = true;
Text *txt = win->file->text;
if (cmd->regex) {
size_t start = range->start, end = range->end, last_start = EPOS;
RegexMatch match[1];
while (start < end) {
bool found = text_search_range_forward(txt, start,
end - start, cmd->regex, 1, match,
start > range->start ? REG_NOTBOL : 0) == 0;
Filerange r = text_range_empty();
if (found) {
if (argv[0][0] == 'x')
r = text_range_new(match[0].start, match[0].end);
else
r = text_range_new(start, match[0].start);
if (match[0].start == match[0].end) {
if (last_start == match[0].start) {
start++;
continue;
}
/* in Plan 9's regexp library ^ matches the beginning
* of a line, however in POSIX with REG_NEWLINE ^
* matches the zero-length string immediately after a
* newline. Try filtering out the last such match at EOF.
*/
if (end == match[0].start && start > range->start)
break;
}
start = match[0].end;
} else {
if (argv[0][0] == 'y')
r = text_range_new(start, end);
start = end;
}
if (text_range_valid(&r)) {
Mark mark_start = text_mark_set(txt, start);
Mark mark_end = text_mark_set(txt, end);
ret &= sam_execute(vis, win, cmd->cmd, NULL, &r);
last_start = start = text_mark_get(txt, mark_start);
if (start == EPOS && last_start != r.end)
last_start = start = r.end;
end = text_mark_get(txt, mark_end);
if (start == EPOS || end == EPOS) {
ret = false;
break;
}
}
}
} else {
size_t start = range->start, end = range->end;
while (start < end) {
size_t next = text_line_next(txt, start);
if (next > end)
next = end;
Filerange r = text_range_new(start, next);
if (start == next || !text_range_valid(&r))
break;
start = next;
Mark mark_start = text_mark_set(txt, start);
Mark mark_end = text_mark_set(txt, end);
ret &= sam_execute(vis, win, cmd->cmd, NULL, &r);
start = text_mark_get(txt, mark_start);
if (start == EPOS)
start = r.end;
end = text_mark_get(txt, mark_end);
if (end == EPOS) {
ret = false;
break;
}
}
}
view_cursors_dispose(cur);
return ret;
}
