compress.py

import os, os.path, shutil

YUI_COMPRESSOR = 'yuicompressor-2.4.2.jar'


#_______________________________________________________________________


def compress(in_files, out_file, in_type='js', verbose=False, temp_file='.temp'):
    temp = open(temp_file, 'w')
    for f in in_files:
        fh = open(f)
        data = fh.read() + '\n'
        fh.close()

        temp.write(data)
        print ' + %s' % f
    temp.close()

    options = ['-o "%s"' % out_file,
               '--type %s' % in_type]

    if verbose:
        options.append('-v')

    if in_type == 'js':
        options.append('--preserve-semi')

    cmd = 'java -jar "%s" %s "%s"' % (YUI_COMPRESSOR,
                                      ' '.join(options),
                                      temp_file)
    print cmd
    os.system(cmd)

    org_size = os.path.getsize(temp_file)
    new_size = os.path.getsize(out_file)

    print '=> %s' % out_file
    print 'Original: %.2f kB' % (org_size / 1024.0)
    print 'Compressed: %.2f kB' % (new_size / 1024.0)
    print 'Reduction: %.1f%%' % (float(org_size - new_size) / org_size * 100)
    print ''


#_______________________________________________________________________


BASE_PATH = 'C:\\xampp\\htdocs\\baloes-v2\\'

# JAVASCRIPT
SCRIPTS = [
    BASE_PATH + 'js\\config.js',
    BASE_PATH + 'js\\baloon.js',
    BASE_PATH + 'js\\engine.js',
]
SCRIPTS_OUT_DEBUG = BASE_PATH + 'js\\bundle.js'
SCRIPTS_OUT = BASE_PATH + 'js\\bundle.min.js'

# CSS
STYLESHEETS = [
    BASE_PATH + 'css\\styles.css',
]
STYLESHEETS_OUT = BASE_PATH + 'css\\styles.min.css'



def main():
    print 'Compressing JavaScript...'
    compress(SCRIPTS, SCRIPTS_OUT, 'js', False, SCRIPTS_OUT_DEBUG)

    print 'Compressing CSS...'
    compress(STYLESHEETS, STYLESHEETS_OUT, 'css', False)

if __name__ == '__main__':
    main()