site_configuration.py

from logging import *
import json
import re
import os

site_conf = None

def _json_minify(json,strip_space=True):
    """ The main purpose of us using this is to strip comments, which aren't actually
        supported by json.

        Based on JSON.minify.js:
            https://github.com/getify/JSON.minify
    """

    tokenizer = re.compile('"|(/\*)|(\*/)|(//)|\n|\r')
    in_string = False
    in_multiline_comment = False
    in_singleline_comment = False

    new_str = []
    from_index = 0 # from is a keyword in Python

    for match in re.finditer(tokenizer,json):

        if not in_multiline_comment and not in_singleline_comment:
            tmp2 = json[from_index:match.start()]
            if not in_string and strip_space:
                tmp2 = re.sub('[ \t\n\r]*','',tmp2) # replace only white space defined in standard
            new_str.append(tmp2)

        from_index = match.end()

        if match.group() == '"' and not in_multiline_comment and not in_singleline_comment:
            escaped = re.search('(\\\\)*$',json[:match.start()])
            if not in_string or escaped is None or len(escaped.group()) % 2 == 0:
                # start of string with ", or unescaped " character found to end string
                in_string = not in_string
            from_index -= 1 # include " character in next catch

        elif match.group() == '/*' and not in_string and not in_multiline_comment and not in_singleline_comment:
            in_multiline_comment = True
        elif match.group() == '*/' and not in_string and in_multiline_comment and not in_singleline_comment:
            in_multiline_comment = False
        elif match.group() == '//' and not in_string and not in_multiline_comment and not in_singleline_comment:
            in_singleline_comment = True
        elif (match.group() == '\n' or match.group() == '\r') and not in_string and not in_multiline_comment and in_singleline_comment:
            in_singleline_comment = False
        elif not in_multiline_comment and not in_singleline_comment and (
             match.group() not in ['\n','\r',' ','\t'] or not strip_space):
                new_str.append(match.group())

    new_str.append(json[from_index:])
    return ''.join(new_str)

def load(filename):

    info('Loading settings from file %s.' % filename)

    # Load configuration from file
    with open(filename) as f:
        global site_conf
        site_conf = json.loads(_json_minify(f.read()))


    info("Site configuration: \n%s", json.dumps(site_conf, sort_keys=True, indent=4, separators=(',', ': ')))

if __name__ == '__main__':

    load('sites-conf/in-conf.json')
    print json.dumps(site_conf, sort_keys=True, indent=4, separators=(',', ': '))