import json, os, sys, gzip prefix = 'file:///~/'MAP = {}def createAssetMapping(assetDirectory):    baseDirectory = os.path.basename(os.path.normpath(assetDirectory))    for root, subfolder, filenames in os.walk(assetDirectory):        for filename in filenames:            if not filename.endswith('.ktx') or os.path.basename(root) == 'skyboxes':                substring = os.path.commonprefix([assetDirectory, root])                newPath = root.replace(substring, '');                filePath = os.sep.join([newPath, filename])                if filePath[0] == '\\':                    filePath = filePath[1:]                finalPath = prefix + baseDirectory + '/' + filePath                finalPath = finalPath.replace('\\', '/')                file = os.path.splitext(filename)[0]                file = os.path.splitext(file)[0]                MAP[file] = finalPath def hasURL(prop):    if "URL" in prop:        return True    return False  def handleURL(url):    newUrl = url    if "atp:" in url:        baseFilename = os.path.basename(url)        filename = os.path.splitext(baseFilename)[0]        newUrl = MAP[filename]    print url + ' -> ' + newUrl    return newUrl def handleOptions():    option = sys.argv[1]    if option == '--help' or option == '-h':        print 'Usage: convertToRelativePaths.py  INPUT[json file you want to update the urls] INPUT[directory that the baked files are located in]'        sys.exit() def main():    argsLength = len(sys.argv)    if argsLength == 3:        jsonFile = sys.argv[1]        assetDirectory = sys.argv[2]        inputFilename = os.path.basename(jsonFile);        absPath = os.path.abspath(assetDirectory)        finalPath = absPath.replace('\\', '/');        gzipFile = finalPath + '/' + inputFilename + '.gz'        print gzipFile        createAssetMapping(assetDirectory)        f = open(jsonFile)        data = json.load(f)        f.close()        for entity in data['Entities']:            for prop in entity:                value = entity[prop]                if hasURL(prop):                   value = handleURL(value)                if prop == "script":                    value = handleURL(value)                if prop == "textures":                    try:                        tmp = json.loads(value)                        for index in tmp:                            tmp[index] = handleURL(tmp[index])                        value = json.dumps(tmp)                    except:                        value = handleURL(value)                  if  prop == "ambientLight":                    for index in value:                        value[index] = handleURL(value[index])                 if prop == "skybox":                    for index in value:                        value[index] = handleURL(value[index])                 if prop == "serverScripts":                    value = handleURL(value)                 entity[prop] = value          jsonString = json.dumps(data)        jsonBytes= jsonString.encode('utf-8')        with gzip.GzipFile(gzipFile, 'w') as fout:   # 4. gzip            fout.write(jsonBytes)     elif argsLength == 2:        handleOptions() main()