Mercurial > pylearn
comparison version.py @ 308:9ebc960260c5
init of version.py
| author | James Bergstra <bergstrj@iro.umontreal.ca> |
|---|---|
| date | Tue, 10 Jun 2008 20:02:25 -0400 |
| parents | |
| children | 44f94ffe28f7 |
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| 307:29c5ad01e9ce | 308:9ebc960260c5 |
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| 1 import subprocess as _subprocess | |
| 2 import imp as _imp | |
| 3 | |
| 4 _cache = {} | |
| 5 | |
| 6 def src_version(module_name): | |
| 7 """Return compact identifier of module code. | |
| 8 | |
| 9 @return: compact identifier of module code. | |
| 10 @rtype: string | |
| 11 | |
| 12 @note: This function tries to establish that the source files and the repo | |
| 13 are syncronized. It raises an Exception if there are un-tracked '.py' | |
| 14 files, or if there are un-committed modifications. This implementation uses | |
| 15 "hg id" to establish this. The code returned by "hg id" is not affected by | |
| 16 hg pull, but pulling might remove the " tip" string which might have | |
| 17 appeared. This implementation ignores the " tip" information, and only | |
| 18 uses the code. | |
| 19 | |
| 20 @note: This implementation is assumes that the import directory is under | |
| 21 version control by mercurial. | |
| 22 | |
| 23 """ | |
| 24 # | |
| 25 # NOTE | |
| 26 # | |
| 27 # If you find bugs in this function, please update the __src_version__ | |
| 28 # function in theano, pylearn, and email either theano-dev or pylearn-dev so | |
| 29 # that people can update their experiment dirs (the output of this function | |
| 30 # is meant to be hard-coded in external files). | |
| 31 # | |
| 32 | |
| 33 if module_name not in _cache: | |
| 34 | |
| 35 location = _imp.find_module(module_name)[1] | |
| 36 #print 'location:', location | |
| 37 | |
| 38 status = _subprocess.Popen(('hg','st'),cwd=location,stdout=_subprocess.PIPE).communicate()[0] | |
| 39 #TODO: check that the process return code is 0 (ticket #45) | |
| 40 | |
| 41 #status_codes = [line[0] for line in if line and line[0] != '?'] | |
| 42 for line in status.split('\n'): | |
| 43 if not line: continue | |
| 44 if line[0] != '?': | |
| 45 raise Exception('Uncommitted modification to "%s" in %s (%s)' | |
| 46 %(line[2:], __name__,location)) | |
| 47 if line[0] == '?' and line[-3:] == '.py': | |
| 48 raise Exception('Untracked file "%s" in %s (%s)' | |
| 49 %(line[2:], __name__, location)) | |
| 50 | |
| 51 hg_id = _subprocess.Popen(('hg','id'),cwd=location,stdout=_subprocess.PIPE).communicate()[0] | |
| 52 | |
| 53 #This asserts my understanding of hg id return values | |
| 54 # There is mention in the doc that it might return two parent hash codes | |
| 55 # but I've never seen it, and I dont' know what it means or how it is | |
| 56 # formatted. | |
| 57 tokens = hg_id.split(' ') | |
| 58 assert len(tokens) <= 2 | |
| 59 assert len(tokens) >= 1 | |
| 60 assert tokens[0][-1] != '+' # the trailing + indicates uncommitted changes | |
| 61 if len(tokens) == 2: | |
| 62 assert tokens[1] == 'tip\n' | |
| 63 | |
| 64 _cache[module_name] = tokens[0] | |
| 65 | |
| 66 return _cache[module_name] | |
| 67 | |
| 68 |