113 lines
2.6 KiB
Python
113 lines
2.6 KiB
Python
from minify import JavascriptMinify
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class Bundle:
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"""
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Concatenate, compress and mix (if required) js+css files from build.json
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"""
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def concat(self, filelist, outfile=None, is_js=False):
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"""
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Concat css and js files into a bundle
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"""
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import os
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from cStringIO import StringIO
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from build import verbose
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out_type = outfile and outfile.split('.')[-1] or 'js'
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temp = StringIO()
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for f in filelist:
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if verbose:
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print f + ' | ' + str(int(os.path.getsize(f)/1024)) + 'k'
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fh = open(f)
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# get file type
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ftype = f.split('.')[-1]
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# special concat (css inside js)
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if is_js and ftype =='css':
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css = fh.read()
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data = "\nwn.assets.handler.css('%s');\n" % css.replace("'", "\\'").replace('\n', '\\\n')
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# plain concat
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else:
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data = fh.read() + '\n'
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fh.close()
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temp.write(data)
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if outfile:
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f = open(outfile, 'w')
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f.write(temp.getvalue())
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f.close()
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if verbose: print 'Wrote %s' % outfile
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return temp
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def minify(self, in_files, outfile, concat=False):
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"""
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Compress in_files into outfile,
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give some stats
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"""
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from build import verbose
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import os
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# concat everything into temp
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outtype = outfile.split('.')[-1]
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temp = self.concat(in_files, is_js=True)
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out = open(outfile, 'w')
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org_size = len(temp.getvalue())
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temp.seek(0)
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# minify
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jsm = JavascriptMinify()
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jsm.minify(temp, out)
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out.close()
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new_size = os.path.getsize(outfile)
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if verbose:
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print '=> %s' % outfile
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print 'Original: %.2f kB' % (org_size / 1024.0)
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print 'Compressed: %.2f kB' % (new_size / 1024.0)
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print 'Reduction: %.1f%%' % (float(org_size - new_size) / org_size * 100)
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def make(self, bpath):
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"""
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Build (stitch + compress) the file defined in build.json
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"""
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import os, sys, json
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from build import no_minify
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# open the build.json file and read
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# the dict
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print "making %s ..." % bpath
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with open(bpath, 'r') as bfile:
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bdata = json.loads(bfile.read())
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path = os.path.dirname(bpath)
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for outfile in bdata:
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prefix, fname = False, outfile
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# check if there is a prefix
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if ':' in outfile:
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prefix, fname = outfile.split(':')
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# build the file list relative to the main folder
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fl = [os.path.relpath(os.path.join(path, f), os.curdir) for f in bdata[outfile]]
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# js files are minified by default unless explicitly
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# mentioned in the prefix.
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# some files may not work if minified (known jsmin bug)
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if fname.split('.')[-1]=='js' and prefix!='concat' and not no_minify:
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self.minify(fl, os.path.relpath(os.path.join(path, fname), os.curdir))
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else:
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self.concat(fl, os.path.relpath(os.path.join(path, fname), os.curdir))
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