#!/usr/bin/env python
# -*- coding: utf-8 -*-

## launch with python web2py.py -S myapp -R scripts/zip_static_files.py

ALLOWED_EXTS = ['.css', '.js']
import os
import gzip
static_path = os.path.abspath(os.path.join(request.folder, 'static'))
filelist = []
for root, dir, files in os.walk(static_path):
    for file in files:
        filelist.append(os.path.join(root, file))
tsave = 0
for fi in filelist:
    extension = os.path.splitext(fi)
    extension = len(extension) > 1 and extension[1] or None
    if not extension or extension not in ALLOWED_EXTS:
        print 'skipping %s' % os.path.basename(fi)
        continue
    fstats = os.stat(fi)
    atime, mtime = fstats.st_atime, fstats.st_mtime
    gfi = fi + '.gz'
    print 'gzipping %s to %s' % (os.path.basename(fi), os.path.basename(gfi))
    f_in = open(fi, 'rb')
    f_out = gzip.open(gfi, 'wb')
    f_out.writelines(f_in)
    f_out.close()
    f_in.close()
    os.utime(gfi, (atime,mtime))
    saved = fstats.st_size - os.stat(gfi).st_size
    tsave+= saved

print 'saved %s KB' % (int(tsave)/1000.0)