A sublime text plugin that pretty formats all the select JSON blobs.

pretty_json.py

import sublime, sublime_plugin
import json
import re

class PrettyJsonCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        re_json_p = re.compile(r'^\s*(\w+)\s*\(\s*(.*)\s*\)\s*$')

        try:
            for region in self.view.sel():
                if not region.empty():
                    # Get the selected text
                    s = self.view.substr(region)

                    # Strip out JSONP
                    func = None
                    m = re_json_p.match(s)
                    if m:
                        func = m.group(1)
                        s = m.group(2)

                    # Transform it
                    s = json.dumps(json.loads(s), sort_keys=True, indent=4)

                    # Add back the JSONP
                    if func is not None:
                        s = func + '(' + s + ')'

                    # Replace the selection with transformed text
                    self.view.replace(edit, region, s)
            
        except Exception, e:
            sublime.error_message("Error making JSON pretty: " + str(e))