Mercurial > pylearn
view version.py @ 309:923de30457f0
get item now returns LookupLists
author | Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca> |
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date | Wed, 11 Jun 2008 11:18:14 -0400 |
parents | 9ebc960260c5 |
children | 44f94ffe28f7 |
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import subprocess as _subprocess import imp as _imp _cache = {} def src_version(module_name): """Return compact identifier of module code. @return: compact identifier of module code. @rtype: string @note: This function tries to establish that the source files and the repo are syncronized. It raises an Exception if there are un-tracked '.py' files, or if there are un-committed modifications. This implementation uses "hg id" to establish this. The code returned by "hg id" is not affected by hg pull, but pulling might remove the " tip" string which might have appeared. This implementation ignores the " tip" information, and only uses the code. @note: This implementation is assumes that the import directory is under version control by mercurial. """ # # NOTE # # If you find bugs in this function, please update the __src_version__ # function in theano, pylearn, and email either theano-dev or pylearn-dev so # that people can update their experiment dirs (the output of this function # is meant to be hard-coded in external files). # if module_name not in _cache: location = _imp.find_module(module_name)[1] #print 'location:', location status = _subprocess.Popen(('hg','st'),cwd=location,stdout=_subprocess.PIPE).communicate()[0] #TODO: check that the process return code is 0 (ticket #45) #status_codes = [line[0] for line in if line and line[0] != '?'] for line in status.split('\n'): if not line: continue if line[0] != '?': raise Exception('Uncommitted modification to "%s" in %s (%s)' %(line[2:], __name__,location)) if line[0] == '?' and line[-3:] == '.py': raise Exception('Untracked file "%s" in %s (%s)' %(line[2:], __name__, location)) hg_id = _subprocess.Popen(('hg','id'),cwd=location,stdout=_subprocess.PIPE).communicate()[0] #This asserts my understanding of hg id return values # There is mention in the doc that it might return two parent hash codes # but I've never seen it, and I dont' know what it means or how it is # formatted. tokens = hg_id.split(' ') assert len(tokens) <= 2 assert len(tokens) >= 1 assert tokens[0][-1] != '+' # the trailing + indicates uncommitted changes if len(tokens) == 2: assert tokens[1] == 'tip\n' _cache[module_name] = tokens[0] return _cache[module_name]