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RailsHelper.py

import re
import sublime_plugin
from os import path

IS_RAILS = re.compile(r'(/app/(controllers|helpers|mailers|models)/|/config/routes|/db/migrate/).+\.rb$')


class GuessRubyTypeListener(sublime_plugin.EventListener):
    def on_load(self, view):
        name = view.file_name()
        if IS_RAILS.search(name):
            view.set_syntax_file('Packages/Rails/Ruby on Rails.tmLanguage')


class ExtractPartialCommand(sublime_plugin.TextCommand):
    def run(self, edit, name=None):
        if name:
            self.apply(name)
        else:
            self.view.window().show_input_panel(
                "Partial name (without underscore)",
                "shared/spam",
                self.apply,
                None,
                None
            )

    def apply(self, name):
        edit = self.view.begin_edit()
        try:
            region = self.view.sel()[0]
            region = self.view.line(region)
            text = self.view.substr(region)
            text, indent = self.clean_ws(text)
            filename = path.dirname(self.view.file_name())
            if '/' in name:
                folder, fn = path.split(name)
                filename = path.dirname(filename)
                filename += "/{0}/_{1}.html.haml".format(folder, fn)
            else:
                filename += "/_{0}.html.haml".format(name)
            with open(filename, 'w+') as f:
                f.write(text)
            self.view.replace(edit, region, "{0}= render partial: '{1}'".format(self.indent() * indent, name))
            self.view.window().open_file(filename)
        finally:
            self.view.end_edit(edit)

    def is_visible(self):
        return self.view.settings().get('syntax') == 'Packages/Rails/Ruby Haml.tmLanguage'

    def clean_ws(self, text):
        lines = text.split('\n')
        indent = re.search('^{0}*'.format(self.indent()), lines[0]).end()
        return '\n'.join(map(lambda l: l[indent:], lines)), indent / len(self.indent())

    def indent(self):
        return ' ' * self.view.settings().get('tab_size') \
            if self.view.settings().get('translate_tabs_to_spaces') else '\t'