titanium-mobile.py

#!/usr/bin/env python

__author__ = "Navin Peiris"
__copyright__ = "Copyright 2011, Navin Peiris. All rights reserved."
__email__ = "navinpeiris@gmail.com"
__status__ = "Development"

import re
import sys
import urllib2
import json
from jsca2js import convertJsca2Js

DEFAULT_HTTP_TIMEOUT_SECS = 10

TITANIUM_VERSION_REGEX = re.compile('\d\.\d\.\d')

def retrieveJsca(version):
    url = 'http://developer.appcelerator.com/apidoc/mobile/' + version + '/api.json'
    try:
        response = urllib2.urlopen(url, timeout=DEFAULT_HTTP_TIMEOUT_SECS)
        content = response.read()
        return json.JSONDecoder().decode(content)
    except urllib2.HTTPError as e:
        raise Exception('Unable to retrieve API for Titanium version ' + version)


def writeJsFile(content, filepath):
    try:
        file = open(filepath, 'w')
        file.write(content)
        file.close()
    except IOError:
        raise Exception('Unable to write JavaScript to file: ' + TITANIUM_JS_FILE_PATH)


def errorExit(message=None):
    if message:
        sys.stderr.write(message)
    sys.exit(1)


def main():
    if len(sys.argv) != 2:
        errorExit('USAGE: ' + sys.argv[0] + ' <titanium-version>')

    version = sys.argv[1]

    if not TITANIUM_VERSION_REGEX.match(version):
        errorExit('ERROR: Invalid titanium version specified. Must be in the format X.X.X')

    print('Retrieving Titanium JSCA API for version: ' + version)
    jsca = retrieveJsca(version)

    print('Converting API to JavaScript')
    javascript = convertJsca2Js(jsca)

    outputFilePath = 'titanium-mobile-' + version + '.js'
    print('Writing JavaScript to file: ' + outputFilePath)
    writeJsFile(javascript, outputFilePath)

if __name__ == '__main__':
    try:
        main()
        print 'Conversion completed successfully'
    except Exception as e:
        print('ERROR: ' + e.message)
        sys.exit(1)