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- #! /usr/bin/env python
- # encoding: utf-8
- # Thomas Nagy, 2012
- """
- A simple cache layer to enable the redistribution of precompiled cython files
- """
- from waflib.Task import ASK_LATER
- from waflib.extras.cython import cython as cython_base
- class cython(cython_base):
- def runnable_status(self):
- ret = cython_base.runnable_status(self)
- if ret != ASK_LATER:
- # we can create Node objects since we are in the main thread
- bld = self.generator.bld
- cache = bld.srcnode.make_node('cython_cache')
- if self.env.CYTHON: # write to the cache directory
- self.cython_cache_outputs = [cache.make_node(x.path_from(bld.bldnode)) for x in self.outputs]
- else: # use the files in the cache directory
- self.cython_cache_outputs = [cache.find_node(x.path_from(bld.bldnode)) for x in self.outputs]
- return ret
- def run(self):
- if self.env.CYTHON:
- ret = cython_base.run(self)
- if not ret:
- for (x, y) in zip(self.outputs, self.cython_cache_outputs):
- y.parent.mkdir()
- y.write(x.read('rb'), 'wb')
- return ret
- else:
- for (x, y) in zip(self.outputs, self.cython_cache_outputs):
- x.write(y.read('rb'), 'wb')
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