Filerange text_object_indentation(Text *txt, size_t pos) {
char c;
size_t bol = text_line_begin(txt, pos);
size_t sol = text_line_start(txt, bol);
size_t start = bol;
size_t end = text_line_next(txt, bol);
size_t line_indent = sol - bol;
bool line_empty = text_byte_get(txt, bol, &c) && (c == '\r' || c == '\n');
char *buf = text_bytes_alloc0(txt, bol, line_indent);
char *tmp = malloc(line_indent);
if (!buf || !tmp) {
free(buf);
free(tmp);
return text_range_empty();
}
while ((bol = text_line_begin(txt, text_line_prev(txt, start))) != start) {
sol = text_line_start(txt, bol);
size_t indent = sol - bol;
if (indent < line_indent)
break;
bool empty = text_byte_get(txt, bol, &c) && (c == '\r' || c == '\n');
if (line_empty && !empty)
break;
if (line_indent == 0 && empty)
break;
text_bytes_get(txt, bol, line_indent, tmp);
if (memcmp(buf, tmp, line_indent))
break;
start = bol;
}
do {
bol = end;
sol = text_line_start(txt, bol);
size_t indent = sol - bol;
if (indent < line_indent)
break;
bool empty = text_byte_get(txt, bol, &c) && (c == '\r' || c == '\n');
if (line_empty && !empty)
break;
if (line_indent == 0 && empty)
break;
text_bytes_get(txt, bol, line_indent, tmp);
if (memcmp(buf, tmp, line_indent))
break;
end = text_line_next(txt, bol);
} while (bol != end);
free(buf);
free(tmp);
return text_range_new(start, end);
}
static size_t op_put(Vis *vis, Text *txt, OperatorContext *c) {
size_t pos = c->pos;
bool sel = text_range_size(&c->range) > 0;
bool sel_linewise = sel && text_range_is_linewise(txt, &c->range);
if (sel) {
text_delete_range(txt, &c->range);
pos = c->pos = c->range.start;
}
switch (c->arg->i) {
case VIS_OP_PUT_AFTER:
case VIS_OP_PUT_AFTER_END:
if (c->reg->linewise && !sel_linewise)
pos = text_line_next(txt, pos);
else if (!sel)
pos = text_char_next(txt, pos);
break;
case VIS_OP_PUT_BEFORE:
case VIS_OP_PUT_BEFORE_END:
if (c->reg->linewise)
pos = text_line_begin(txt, pos);
break;
}
size_t len;
const char *data = register_get(vis, c->reg, &len);
for (int i = 0; i < c->count; i++) {
text_insert(txt, pos, data, len);
pos += len;
}
if (c->reg->linewise) {
switch (c->arg->i) {
case VIS_OP_PUT_BEFORE_END:
case VIS_OP_PUT_AFTER_END:
pos = text_line_start(txt, pos);
break;
case VIS_OP_PUT_AFTER:
pos = text_line_start(txt, text_line_next(txt, c->pos));
break;
case VIS_OP_PUT_BEFORE:
pos = text_line_start(txt, c->pos);
break;
}
} else {
switch (c->arg->i) {
case VIS_OP_PUT_AFTER:
case VIS_OP_PUT_BEFORE:
pos = text_char_prev(txt, pos);
break;
}
}
return pos;
}
Filerange text_range_linewise(Text *txt, Filerange *rin) {
Filerange rout = *rin;
rout.start = text_line_begin(txt, rin->start);
if (rin->end != text_line_begin(txt, rin->end))
rout.end = text_line_next(txt, rin->end);
return rout;
}
static bool cmd_select(Vis *vis, Win *win, Command *cmd, const char *argv[], Cursor *cur, Filerange *range) {
Filerange sel = text_range_empty();
if (!win)
return sam_execute(vis, NULL, cmd->cmd, NULL, &sel);
bool ret = true;
View *view = win->view;
Text *txt = win->file->text;
bool multiple_cursors = view_cursors_multiple(view);
Cursor *primary = view_cursors_primary_get(view);
for (Cursor *c = view_cursors(view), *next; c && ret; c = next) {
next = view_cursors_next(c);
size_t pos = view_cursors_pos(c);
if (vis->mode->visual) {
sel = view_cursors_selection_get(c);
} else if (cmd->cmd->address) {
/* convert a single line range to a goto line motion */
if (!multiple_cursors && cmd->cmd->cmddef->func == cmd_print) {
Address *addr = cmd->cmd->address;
switch (addr->type) {
case '+':
case '-':
addr = addr->right;
/* fall through */
case 'l':
if (addr && addr->type == 'l' && !addr->right)
addr->type = 'g';
break;
}
}
sel = text_range_new(pos, pos);
} else if (cmd->cmd->cmddef->flags & CMD_ADDRESS_POS) {
sel = text_range_new(pos, pos);
} else if (cmd->cmd->cmddef->flags & CMD_ADDRESS_LINE) {
sel = text_object_line(txt, pos);
} else if (cmd->cmd->cmddef->flags & CMD_ADDRESS_AFTER) {
size_t next_line = text_line_next(txt, pos);
sel = text_range_new(next_line, next_line);
} else if (multiple_cursors) {
sel = text_object_line(txt, pos);
} else {
sel = text_range_new(0, text_size(txt));
}
if (text_range_valid(&sel))
ret &= sam_execute(vis, win, cmd->cmd, c, &sel);
if (cmd->cmd->cmddef->flags & CMD_ONCE)
break;
}
if (vis->win && vis->win->view == view && primary != view_cursors_primary_get(view))
view_cursors_primary_set(view_cursors(view));
return ret;
}
size_t text_function_start_prev(Text *txt, size_t pos) {
char c;
size_t apos = text_byte_get(txt, pos, &c) && c == '}' && pos > 0 ? pos - 1 : pos;
size_t a = text_function_end_next(txt, apos);
size_t b = text_function_end_prev(txt, pos);
if (a != apos) {
size_t match = text_bracket_match(txt, a);
a = match != a ? text_line_next(txt, text_line_empty_prev(txt, match)) : pos;
}
if (b != pos) {
size_t match = text_bracket_match(txt, b);
b = match != b ? text_line_next(txt, text_line_empty_prev(txt, match)) : pos;
}
if (a >= pos && b >= pos)
return pos;
else if (a >= pos)
return b;
else if (b >= pos)
return a;
else
return MAX(a, b);
}
size_t text_function_start_next(Text *txt, size_t pos) {
size_t a = text_function_end_next(txt, pos);
size_t b = a;
char c;
if (a != pos) {
Iterator it = text_iterator_get(txt, a);
while (text_iterator_byte_next(&it, &c) && (c == '\r' || c == '\n'));
a = it.pos;
}
if (b != pos) {
size_t match = text_bracket_match(txt, b);
b = match != b ? text_line_next(txt, text_line_empty_prev(txt, match)) : pos;
}
if (a <= pos && b <= pos)
return pos;
else if (a <= pos)
return b;
else if (b <= pos)
return a;
else
return MIN(a, b);
}
static Filerange address_line_evaluate(Address *addr, File *file, Filerange *range, int sign) {
Text *txt = file->text;
size_t offset = addr->number != 0 ? addr->number : 1;
size_t start = range->start, end = range->end, line;
if (sign > 0) {
char c;
if (end > 0 && text_byte_get(txt, end-1, &c) && c == '\n')
end--;
line = text_lineno_by_pos(txt, end);
line = text_pos_by_lineno(txt, line + offset);
} else if (sign < 0) {
line = text_lineno_by_pos(txt, start);
line = offset < line ? text_pos_by_lineno(txt, line - offset) : 0;
} else {
line = text_pos_by_lineno(txt, addr->number);
}
if (addr->type == 'g')
return text_range_new(line, line);
else
return text_range_new(line, text_line_next(txt, line));
}
Filerange text_object_line(Text *txt, size_t pos) {
Filerange r;
r.start = text_line_begin(txt, pos);
r.end = text_line_next(txt, pos);
return r;
}
size_t text_range_line_next(Text *txt, Filerange *r, size_t pos) {
if (!text_range_contains(r, pos))
return EPOS;
size_t newpos = text_line_next(txt, pos);
return newpos != pos && newpos < r->end ? newpos : EPOS;
}
size_t text_line_down(Text *txt, size_t pos) {
int width = text_line_width_get(txt, pos);
size_t next = text_line_next(txt, pos);
return text_line_width_set(txt, next, width);
}
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;
}
