sprites.py

#   Copyright (c) , mishudark <[email protected]>.  This file is
#   licensed under the Affero General Public License version 3 or later.  See
#   the COPYRIGHT file.

import fileinput
import linecache
import re

file_css = 'style.css'
sprite_css = 'sprites.css'
class_prefix = 'sprite-images-'

regex = re.compile(r'background:\s{0,1}url\((?:[A-Za-z0-9-_]+\/)*(?P<url>[A-Za-z0-9-_]+)\.[a-z]+\)')
regex_width = re.compile(r'width:\s{0,1}')
regex_height = re.compile(r'height:\s{0,1}')
regex_start = re.compile(r'{')

regex_class_name = re.compile(r'\.(?P<class>.+){(?P<style>.+)}')

clases = ''
clase = ''
css = {}
width = ''
height = ''
flag = False


f = open(sprite_css,'r')
lines = f.readlines()

for line in lines:
    r = regex_class_name.search(line)
    if r:
        css[r.group('class').replace(class_prefix,'')] = r.group('style')
f.close()


for line in fileinput.input(file_css, inplace=1):
    #start of class or id
    if regex_start.search(line):
        #restart values
        height = ''
        width = ''
        flag = False

        clase = line.replace('{','')

        print line,
        continue


    #end of class or id
    if line.strip() == '}':
        if flag:
            if width:
                print '/*'
                print width,
                print '*/'
            if height:
                print '/*'
                print height,
                print '*/'
        else:
            if width:
                print width,
            if height:
                print height,
        print line

        #restart values
        height = ''
        width = ''
        clase = ''
        flag = False
        continue

    #search background name
    name = regex.search(line)

    if not name:
        h = regex_height.search(line)
        if h:
            height = line
            continue
        w = regex_width.search(line)
        if w:
            width = line
            continue
        print line,
        continue

    name = name.group('url')
    name = re.sub(r'[^\w\-_]', '', name)

    replace =  css.get(name,None)
    #print replace if replace else line
    if replace:
        flag = True
        clases = clases + clase.replace('\n','') + ','
        print '/*'
        print line,
        print '*/'
        replace = replace.split(';')
        l = len(replace)
        for i in range(l-1):
            if i == 0:
                print replace[i] + ' !important;'
            else:
                print replace[i] + ';'
    else:
        print line
print clases