комрессирует скрипты на лету, плагин для routes, инвокация в конце.

gistfile1.py

    def cscript_expand(kw,style=False):
        if style: cachedir='styles'
        else: cachedir='scripts'
        #we need to hash our list of scripts to get a unique new compressed name for it
        m = hashlib.md5()
        last_mt = None
        sz = 0
        #remove logging in compressed scripts
        if '/general_trawler.js' in kw['o']: kw['o'][kw['o'].index('/general_trawler.js')]='/general_trawler_nologging.js'
        for scr in kw['o']:
            m.update(scr)
            myst = os.stat(os.path.join(config['pylons.paths']['static_files'],scr[1:]))
            mt = myst.st_mtime
            sz += myst.st_size
            rlog.info('%s = %s bytes'%(scr,myst.st_size))
            if not last_mt or mt>last_mt: last_mt=mt
            
        hd = m.hexdigest()
        kw['fnhash']=hd
        #then, actually generate our compressed script if we need to:
        if style:
            sfx = '.min.css'
        else:
            sfx = '.min.js'
        tfile = os.path.join(config['pylons.paths']['static_files'],cachedir,kw['fnhash']+sfx)
        fex = os.path.exists(tfile)
        st=None
        if fex:
            st = os.stat(tfile)
            rlog.info('source files are %s. destination is %s'%(sz,st.st_size))
        #we need to generate either when comrpessed file is missing or is older than the newest source file
        if not fex or st.st_mtime<last_mt:
            if style:
                jarn = 'yuicompressor.jar'
                opopt='-o '
                inopt=''
            else:
                jarn = 'google.closure.compiler.jar'
                opopt='--js_output_file='
                inopt='--js='
            
            cmd = 'java -jar %s %s %s%s'%(os.path.join(config['pylons.paths']['root'],'..',jarn)
                                          ,' '.join(['%s%s'%(inopt,os.path.join(config['pylons.paths']['static_files'],fn[1:])) for fn in kw['o']])
                                          ,opopt
                                          ,tfile)
            rlog.info(cmd)
            st,op = commands.getstatusoutput(cmd)            
            if st!=0:
                os.unlink(tfile)
                raise Exception('returned %s,%s'%(st,op))
            
        del kw['o']
        return kw

    def cstyle_expand(kw):
        return cscript_expand(kw,style=True)

    map.connect('js',"/cscript/{fnhash}.min.js",controller='interface',action='cscript',_filter=cscript_expand)
    map.connect('css',"/cstyle/{fnhash}.min.css",controller='interface',action='cstyle',_filter=cstyle_expand)