FormatLua.py

import os
import subprocess
import sublime
import sublime_plugin
import re
import zipfile
from os.path import basename
from os.path import join

version = int(sublime.version())
package = "FormatLua"

def plugin_loaded():
    if version >= 3006:
        package_location = os.path.join(sublime.installed_packages_path(), package + ".sublime-package")
        extract_location = os.path.join(sublime.packages_path(), package)
        if os.path.exists(package_location):
            if not os.path.exists(extract_location):
                with zipfile.ZipFile(package_location) as zip_file:
                    zip_file.extractall(extract_location)

class FormatLuaCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        view = self.view
        regions = view.sel()
        # if there are more than 1 region or region one and it"s not empty
        if len(regions) > 1 or not regions[0].empty():
            for region in view.sel():
                if not region.empty():
                    s = view.substr(region)
                s = self._run(s)
                view.replace(edit, region, s)
        else:   #format all text
            alltextreg = sublime.Region(0, view.size())
            s = view.substr(alltextreg)
            s = self._run(s)
            view.replace(edit, alltextreg, s)

    def _run(self, s):
        s = s.encode("utf-8")
        packages_path = join(sublime.packages_path(), package)
        os.chdir(packages_path)
        settings = sublime.load_settings(package + ".sublime-settings")

        perl_path = settings.get("perl_path")
        cmd = perl_path + " reindent.pl"

        p = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
        sourcecode = p.communicate(s)[0]

        return sourcecode.decode("utf-8")