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);
}
int text_search_range_forward(Text *txt, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags) {
char *buf = text_bytes_alloc0(txt, pos, len);
if (!buf)
return REG_NOMATCH;
regmatch_t match[nmatch];
int ret = regexec(&r->regex, buf, nmatch, match, eflags);
if (!ret) {
for (size_t i = 0; i < nmatch; i++) {
pmatch[i].start = match[i].rm_so == -1 ? EPOS : pos + match[i].rm_so;
pmatch[i].end = match[i].rm_eo == -1 ? EPOS : pos + match[i].rm_eo;
}
}
free(buf);
return ret;
}
Filerange text_object_number(Text *txt, size_t pos) {
char *buf, *err = NULL;
Filerange r = text_object_range(txt, pos, is_number);
if (!text_range_valid(&r))
return r;
if (!(buf = text_bytes_alloc0(txt, r.start, text_range_size(&r))))
return text_range_empty();
errno = 0;
strtoll(buf, &err, 0);
if (errno || err == buf)
r = text_range_empty();
else
r.end = r.start + (err - buf);
free(buf);
return r;
}
int text_search_range_backward(Text *txt, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags) {
char *buf = text_bytes_alloc0(txt, pos, len);
if (!buf)
return REG_NOMATCH;
regmatch_t match[nmatch];
char *cur = buf;
int ret = REG_NOMATCH;
while (!regexec(&r->regex, cur, nmatch, match, eflags)) {
ret = 0;
for (size_t i = 0; i < nmatch; i++) {
pmatch[i].start = match[i].rm_so == -1 ? EPOS : pos + (size_t)(cur - buf) + match[i].rm_so;
pmatch[i].end = match[i].rm_eo == -1 ? EPOS : pos + (size_t)(cur - buf) + match[i].rm_eo;
}
cur += match[0].rm_eo;
}
free(buf);
return ret;
}
static const char *prompt_enter(Vis *vis, const char *keys, const Arg *arg) {
Win *prompt = vis->win;
View *view = prompt->view;
Text *txt = prompt->file->text;
Win *win = prompt->parent;
char *cmd = NULL;
Filerange range = view_selection_get(view);
if (!text_range_valid(&range))
range = text_object_line(txt, view_cursor_get(view));
if (text_range_valid(&range))
cmd = text_bytes_alloc0(txt, range.start, text_range_size(&range));
if (!win || !cmd) {
vis_info_show(vis, "Prompt window invalid\n");
prompt_restore(prompt);
prompt_hide(prompt);
free(cmd);
return keys;
}
size_t len = strlen(cmd);
if (len > 0 && cmd[len-1] == '\n')
cmd[len-1] = '\0';
bool lastline = (range.end == text_size(txt));
prompt_restore(prompt);
if (vis_prompt_cmd(vis, cmd)) {
prompt_hide(prompt);
if (!lastline) {
text_delete(txt, range.start, text_range_size(&range));
text_appendf(txt, "%s\n", cmd);
}
} else {
vis->win = prompt;
vis->mode = &vis_modes[VIS_MODE_INSERT];
}
free(cmd);
vis_draw(vis);
return keys;
}
