Synnefo

#!/usr/bin/env python

import re

keywords = set(['true', 'false', 'null'])

unquoted = set('{}[]"\'0123456789')

name_matcher = re.compile('^[\w @_.+-]+$', re.UNICODE)

def is_name(token):

    if name_matcher.match(token):

        return 1

    return 0

def quote(token, is_dict):

    if not token:

        return '""'

    if not is_name(token[0]):

        comma = ', ' if token[-1] not in '{[' else ''

        return token + comma

    k, sep, v = token.partition('=')

    if not sep or not v.strip('='):

        k, sep, v = token.partition(':')

    if not sep:

        if is_name(token) and token not in keywords:

            token = '"' + token + '"'

        comma = ', ' if token[-1] not in '{[' else ''

        return token + comma

    k = '"' + k + '"'

    is_dict.add(1)

    if not v:

        v = '""'

    else:

        if v.isalnum() and not v.isdigit() and v not in keywords:

            v = '"' + v + '"'

    comma = ', ' if v[-1] not in '{[' else ''

    return k + ':' + v + comma

def clijson(argv):

    tokens = argv

    is_dict = set()

    strlist = []

    append = strlist.append

    dictionary = 0

    token_join = None

    for t in tokens:

        t = t.strip()

        if strlist and t and t in '}]':

            strlist[-1] = strlist[-1].rstrip(', ')

        if token_join:

            t = token_join + t

            token_join = None

        elif t.endswith(':'):

            token_join = t

            continue

        t = quote(t, is_dict)

        append(t)

    if not strlist:

        return 'null'

    if strlist[0][0] not in '{[':

        strlist[-1] = strlist[-1].rstrip(', ')

        o, e = '{}' if is_dict else '[]'

        strlist = [o] + strlist + [e]

    if strlist[-1][-1] in ']}':

        strlist[-1] = strlist[-1].rstrip(',')

    return ''.join(strlist)

if __name__ == '__main__':

    from sys import argv

    print clijson(argv[1:])