#!/usr/bin/env python3

import ast
import json
import sys

def settings2json(the_ast):
    ret = {'images': {}}
    if the_ast[0]['_type'] != the_ast[3]['_type']:
        raise TypeError('validation failed, wrong file?')
    for node in the_ast[1]['block']:
        if node['_type'] == 'Image':
            r = node['code']
            if r: # not atl
                try:
                    r['eval'] = ast.literal_eval(r['source'])
                except ValueError:
                    pass
                ret['images'][' '.join(node['imgname'])] = r
    return ret

with open(sys.argv[1], 'r') as f:
    output = settings2json(json.load(f))

json.dump(output, open(sys.argv[2], 'w'), separators=(',', ':'))