Sublime 3 xml_pp (xmltwig) based xml auto formatter.

xmlppformat.py

"""
Sublime 3 xml_pp (xmltwig) based xml auto formatter.
Setup in Sublime:
- sudo apt-get install xml-twig-tools
- in Sublime go to menu: Tools -> New Plugin...
- paste this file into the editor.
- save: use the preset location (~/.config/sublime-text-3/Packages/User)
and name it exactly "xmlppformat.py".
- in Sublime go to menu: Preferences -> Key Bindings - User
- add an keybinding i.e.:
[{ "keys": ["ctrl+shift+x"], "command": "xmlppformat" }]
- go to some xml file and have fun.
"""
import sublime
import sublime_plugin
import subprocess


class XmlppformatCommand(sublime_plugin.TextCommand):

    def run(self, edit):
        command = "xml_pp -s indented_a"

        # help from http://www.sublimetext.com/forum/viewtopic.php?f=2&p=12451
        if self.view.sel()[0].empty():
            xml_region = sublime.Region(0, self.view.size())
        else:
            xml_region = self.view.sel()[0]

        proc = subprocess.Popen(
            command,
            bufsize=-1,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            stdin=subprocess.PIPE,
            shell=True
        )
        result, err = proc.communicate(
            self.view.substr(
                xml_region
            ).encode('utf-8')
        )

        if err != b"":
            msg = 'ERROR in xml_pp: ' + err.decode("utf-8").strip()
            msg = msg.replace('\n', ' : ')
            msg = msg.replace('\r', '')
            sublime.status_message(msg)
            return
        self.view.replace(
            edit,
            xml_region,
            result.decode('utf-8').replace("\r", "")
        )