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nolanlawson/bundle_everything.py

Last active December 14, 2015 16:49
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Automatic bundling! Input a js directory, a css directory, and an HTML file, and this script will bundle it all into three groups: head (css), head (js), and body (js). Works for inline scripts as well.
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bundle_everything.py
#!/usr/bin/env python
#
# Input a js directory, a css directory, and an HTML file, and this script will bundle
# it all into three groups: head (css), head (js), and body (js). Skips inline scripts.
# Deletes the original JS and CSS folders, optionally
#
# usage: bundle_everything.py my/html/file output/js/folder output/css/folder delete_originals
#
import sys,re,os.path,os
try:
(html, jsFolder, cssFolder, deleteOriginals) = sys.argv[1:]
try: deleteOriginals = bool(eval(deleteOriginals))
except: deleteOriginals = False
except:
sys.exit("usage: bundle_everything.py my/html/file output/js/folder output/css/folder delete_originals")
headPattern = re.compile("<head>(.*?)</head>", re.DOTALL)
bodyPattern = re.compile("<body>(.*?)</body>", re.DOTALL)
scriptPattern = re.compile('<script.*?</script>', re.DOTALL)
linkPattern = re.compile('<link.*?/>', re.DOTALL)
scriptFinderPattern = re.compile("""<script.*?</script>""", re.DOTALL)
linkFinderPattern = re.compile("""<link.*?href=["'](.*?)['"]""", re.DOTALL)
srcPattern = re.compile("""src=["'](.*?)['"]""", re.DOTALL)
inlinePattern = re.compile(""">(.*?)<""", re.DOTALL)
filesToRemove = []
htmlText = open(html,'r').read()
head = headPattern.findall(htmlText)[0]
body = bodyPattern.findall(htmlText)[0]
headJs = scriptFinderPattern.findall(head)
bodyJs = scriptFinderPattern.findall(body)
headCss = linkFinderPattern.findall(head)
def jsExtractor(input):
# return the string if it's inline, read the file if it's src
if (srcPattern.search(input)):
filename = os.path.join(os.path.dirname(html), srcPattern.search(input).group(1))
filesToRemove.append(filename)
result = open(filename,'r').read()
else:
result = inlinePattern.search(input).group(1)
return result
def cssExtractor(input):
filename = os.path.join(os.path.dirname(html), input)
filesToRemove.append(filename)
return open(filename,'r').read()
headJsOut = '\n'.join(map(jsExtractor, headJs))
bodyJsOut = '\n'.join(map(jsExtractor, bodyJs))
headCssOut = '\n'.join(map(cssExtractor, headCss))
filenames = [os.path.join(jsFolder,'head.js'),os.path.join(jsFolder,'body.js'),os.path.join(cssFolder,'head.css')]
for (filename, text) in zip(filenames, [headJsOut, bodyJsOut, headCssOut]):
fileout = open(os.path.join(os.path.dirname(html),filename),'w')
fileout.write(text)
fileout.close()
headMatch = headPattern.search(htmlText)
bodyMatch = bodyPattern.search(htmlText)
headText = headMatch.group(1)
bodyText = bodyMatch.group(1)
# replace all the text
headText = scriptPattern.sub('',headText)
headText = linkPattern.sub('',headText)
bodyText = scriptPattern.sub('',bodyText)
headText += """<link rel="stylesheet" href="%s"/><script src="%s"></script>""" % (filenames[2],filenames[0])
bodyText += """<script src="%s"></script>""" % filenames[1]
htmlText = htmlText[:headMatch.start(1)] + headText + htmlText[headMatch.end(1):bodyMatch.start(1)] + bodyText + htmlText[bodyMatch.end(1):]
fileout = open(html,'w')
fileout.write(htmlText)
fileout.close()
if bool(deleteOriginals):
for filename in filesToRemove:
os.remove(filename)
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