2013-03-27 18:40:17 +01:00
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from django.conf import settings
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from hashlib import sha1
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from os import path
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from pipeline.compressors import SubProcessCompressor
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class ClosureSourceMapCompressor(SubProcessCompressor):
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def compress_js(self, js):
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# js is the full text of the JavaScript source, and we can't
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# easily get either the input file names or the output file
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# name. So we just pick a unique arbitrary name. This is
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# okay because we can figure out from the source map file
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# contents which JavaScript files it corresponds to.
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2013-03-27 22:10:58 +01:00
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# As a hack to make things easier, assume that any large input
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# corresponds to app.js. This is like 60 times bigger than
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# any other input file, at present.
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if len(js) > 100000:
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source_map_name = 'app.js.map'
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else:
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source_map_name = sha1(js).hexdigest() + '.map'
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source_map = path.join(
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settings.PIPELINE_CLOSURE_SOURCE_MAP_DIR, source_map_name)
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2013-03-27 18:40:17 +01:00
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command = '%s --create_source_map %s' % (
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settings.PIPELINE_CLOSURE_BINARY, source_map)
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return self.execute_command(command, js)
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