indent_list_multiitem.py

import sublime_plugin
import re


class IndentListMultiitemCommand(sublime_plugin.TextCommand):

    def run(self, edit, reverse=False):
        todo = []
        for region in self.view.sel():
            lines = self.view.line(region)
            lines = self.view.split_by_newlines(lines)
            for line in lines:
                line_content = self.view.substr(line)
                if not re.match("^\\s*(>\\s*)?[*+\\-]\\s+(.*)$", line_content):
                    break
                bullet_pattern = "([*+\\-])"
                bullet_pattern_a = "^\\s*(?:>\\s*)?("
                bullet_pattern_b = ")\\s+"
                new_line = line_content
                # Transform the bullet to the next/previous bullet type
                if self.view.settings().get("mde.list_indent_auto_switch_bullet", True):
                    bullets = self.view.settings().get(
                        "mde.list_indent_bullets", ["*", "-", "+"])

                    for key, bullet in enumerate(bullets):
                        re_bullet = re.escape(bullet)
                        search_pattern = bullet_pattern_a + \
                            re_bullet + bullet_pattern_b
                        if re.search(search_pattern, line_content):
                            if reverse and new_line.startswith(bullet) and key is 0:
                                # In this case, do not switch bullets
                                continue

                            new_line = new_line.replace(
                                bullet, bullets[(key + (1 if not reverse else -1)) % len(bullets)])
                            break

                # Determine how to indent (tab or spaces)
                if self.view.settings().get("translate_tabs_to_spaces"):
                    tab_str = self.view.settings().get("tab_size", 4) * " "

                else:
                    tab_str = "\t"

                if not reverse:
                    # Do the indentation
                    new_line = re.sub(
                        bullet_pattern, tab_str + "\\1", new_line)

                else:
                    # Do the unindentation
                    new_line = re.sub(
                        tab_str + bullet_pattern, "\\1", new_line)

                # Insert the new item
                todo.append([line, new_line])

        while len(todo) > 0:
            j = todo.pop()
            self.view.replace(edit, j[0], j[1])

    def is_enabled(self):
        return bool(self.view.score_selector(self.view.sel()[0].a, "text.html.markdown"))