Mercurial > pylearn

annotate version.py @ 436:d7ed780364b3

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image_tools
author Olivier Breuleux <breuleuo@iro.umontreal.ca>
date Wed, 06 Aug 2008 19:39:14 -0400
parents 7a734dba4cac
children
rev   line source
308
9ebc960260c5 init of version.py
James Bergstra <bergstrj@iro.umontreal.ca>
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1 import subprocess as _subprocess
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2 import imp as _imp
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3 import sys
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4 import os
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5
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ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
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6
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7a734dba4cac wrote back _cache
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7 _cache = dict()
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8
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9 def src_version(module_name):
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10 """Return compact identifier of module code.
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11
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12 @return: compact identifier of module code.
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13 @rtype: string
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14
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15 @note: This function tries to establish that the source files and the repo
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16 are syncronized. It raises an Exception if there are un-tracked '.py'
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17 files, or if there are un-committed modifications. This implementation uses
9ebc960260c5 init of version.py
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18 "hg id" to establish this. The code returned by "hg id" is not affected by
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19 hg pull, but pulling might remove the " tip" string which might have
9ebc960260c5 init of version.py
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20 appeared. This implementation ignores the " tip" information, and only
9ebc960260c5 init of version.py
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21 uses the code.
9ebc960260c5 init of version.py
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22
9ebc960260c5 init of version.py
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23 @note: This implementation is assumes that the import directory is under
9ebc960260c5 init of version.py
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24 version control by mercurial.
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25
9ebc960260c5 init of version.py
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26 """
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27
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28 if module_name not in _cache:
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29
323
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30 try :
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31 location = _imp.find_module(module_name)[1]
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32 except ImportError:
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33 _cache[module_name] = None
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34 return None
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35 #print 'location:', location
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36 isdir = False
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37 if os.path.isdir(location) :
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38 isdir = True
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39 elif os.path.isfile(location) :
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40 isdir = False
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41 else :
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42 # SEEMS THIS CASE EXIST, FOR WEIRD BUILTIN FUNCTIONS
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43 #print location,": it's 'not a dir, it's not a file, it's superman!"
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44 #raise Exception('Unknown location or file type')
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45 _cache[module_name] = None
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46 return None
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47
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48
323
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49 # we're dealing with a dir
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50 if isdir :
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51
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52 # under hg?
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53 if not os.path.exists( os.path.join( location , '.hg') ) :
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54 _cache[module_name] = None
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55 return None
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56
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57 status = _subprocess.Popen(('hg','st'),cwd=location,stdout=_subprocess.PIPE).communicate()[0]
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58 #print 'status =', status
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59 #TODO: check that the process return code is 0 (ticket #45)
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60
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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61 #status_codes = [line[0] for line in if line and line[0] != '?']
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62 for line in status.split('\n'):
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63 if not line: continue
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64 if line[0] != '?':
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65 raise Exception('Uncommitted modification to "%s" in %s (%s)'
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66 %(line[2:], __name__,location))
323
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67 if line[0] == '?' and line[-3:] == '.py':
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68 raise Exception('Untracked file "%s" in %s (%s)'
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69 %(line[2:], __name__, location))
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70
323
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71 hg_id = _subprocess.Popen(('hg','id'),cwd=location,stdout=_subprocess.PIPE).communicate()[0]
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72
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73 # This asserts my understanding of hg id return values
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74 # There is mention in the doc that it might return two parent hash codes
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75 # but I've never seen it, and I dont' know what it means or how it is
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76 # formatted.
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77 tokens = hg_id.split(' ')
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78 assert len(tokens) <= 2
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79 assert len(tokens) >= 1
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80 assert tokens[0][-1] != '+' # the trailing + indicates uncommitted changes
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81 if len(tokens) == 2:
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82 assert tokens[1] == 'tip\n'
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83
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84 _cache[module_name] = tokens[0]
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85
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86 # we're dealing with a file
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87 if not isdir :
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88
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89 folder = os.path.split( os.path.abspath(location) )[0]
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90 # under hg?
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91 if not os.path.exists( os.path.join( folder , '.hg') ) :
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92 _cache[module_name] = None
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93 return None
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94
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95 status = _subprocess.Popen(('hg','st',location),cwd=folder,stdout=_subprocess.PIPE).communicate()[0]
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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96 #print 'status =', status
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97
323
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98 #status_codes = [line[0] for line in if line and line[0] != '?']
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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99 for line in status.split('\n'):
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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100 if not line: continue
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101 if line[0] != '?':
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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102 raise Exception('Uncommitted modification to "%s" in %s (%s)'
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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103 %(line[2:], location,folder))
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104 if line[0] == '?' and line[-3:] == '.py':
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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105 raise Exception('Untracked file "%s" in %s (%s)'
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
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diff changeset
106 %(line[2:], location, folder))
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
107
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
108 hg_id = _subprocess.Popen(('hg','id'),cwd=folder,stdout=_subprocess.PIPE).communicate()[0]
308
9ebc960260c5 init of version.py
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parents:
diff changeset
109
323
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
110 # This asserts my understanding of hg id return values
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
111 # There is mention in the doc that it might return two parent hash codes
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
112 # but I've never seen it, and I dont' know what it means or how it is
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
113 # formatted.
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
114 tokens = hg_id.split(' ')
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
115 assert len(tokens) <= 2
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
116 assert len(tokens) >= 1
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
117 if tokens[0][-1] == '+' :
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
118 tokens[0] = tokens[0][:-1] # the change was not on this file
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
119 if len(tokens) == 2:
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
120 assert tokens[1] == 'tip\n'
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
121
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
122 _cache[module_name] = tokens[0]
44f94ffe28f7 version works with file and folder, returns null if not in hg. Also a function to get all modules, but seems to get junk at the same time
Thierry Bertin-Mahieux <bertinmt@iro.umontreal.ca>
parents: 308
diff changeset
123
308
9ebc960260c5 init of version.py
James Bergstra <bergstrj@iro.umontreal.ca>
parents:
diff changeset
124
9ebc960260c5 init of version.py
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parents:
diff changeset
125 return _cache[module_name]
9ebc960260c5 init of version.py
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parents:
diff changeset
126
324
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diff changeset
127 _unknown_version = 'unknown version'
308
9ebc960260c5 init of version.py
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parents:
diff changeset
128
324
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diff changeset
129 def hg_version(dirname, filenames=None):
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diff changeset
130 """Return current changeset of directory I{dirname}.
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diff changeset
131
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diff changeset
132 @type filename: list of str (or default: None)
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diff changeset
133 @param filename: if specified, we ignore modifications to other files.
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diff changeset
134
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diff changeset
135 @rtype: tuple (last changeset, modified)
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diff changeset
136
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diff changeset
137 """
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parents: 323
diff changeset
138 if type(filenames) not in (list, tuple, type(None)):
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parents: 323
diff changeset
139 raise TypeError(filenames)
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parents: 323
diff changeset
140
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parents: 323
diff changeset
141 #may raise exception, for example if hg is not visible via PATH
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
142 status_proc = _subprocess.Popen(('hg','st'), cwd=dirname,
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parents: 323
diff changeset
143 stdout=_subprocess.PIPE, stderr=_subprocess.PIPE)
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
144 status = status_proc.communicate()[0] #read stdout into buffer
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
145 if status_proc.returncode != 0:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
146 raise OSError('hg returned %i, maybe %s is not under hg control?',
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
147 (status_proc.returncode, dirname))
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parents: 323
diff changeset
148
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parents: 323
diff changeset
149 #may raise exception, for example if hg is not visible via PATH
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
150 id_proc = _subprocess.Popen(('hg','id', '-i'), cwd=dirname,
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
151 stdout=_subprocess.PIPE, stderr=_subprocess.PIPE)
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
152 id_stdout = id_proc.communicate()[0]
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
153 if id_proc.returncode != 0:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
154 raise OSError('hg returned %i, maybe %s is not under hg control?',
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
155 (id_proc.returncode, dirname))
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
156
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
157 care_about = (lambda some_file : True) if filenames is None \
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
158 else (lambda some_file : some_file in filenames)
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
159
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
160 # parse status codes for what we care about
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
161 care_about_mod = False
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
162 for line in status.split('\n'):
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
163 if not line: #empty lines happen
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
164 continue
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
165 line_file = line[2:]
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
166 if line[0] != '?' and care_about(line_file):
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
167 care_about_mod = True
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
168 #raise Exception('Uncommitted modification',
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
169 #os.path.join(dirname, line_file))
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
170 if line[0] == '?' and line[-3:] == '.py':
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
171 print >> sys.stderr, 'WARNING: untracked file', os.path.join(dirname, line_file)
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
172
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
173 # id_stdout is 12 hex digits followed by '+\n' or '\n'
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
174 # return the trailing '+' character only if there were changes to files that
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
175 # the caller cares about (named in filenames)
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
176 modified = (id_stdout[12] == '+')
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
177 assert len(id_stdout) in (13, 14) #sanity check
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
178 if modified and care_about_mod :
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
179 return id_stdout[:13]
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
180 else:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
181 return id_stdout[:12]
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
182
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
183 def _import_id_py_source(location):
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
184 try:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
185 dirname = os.path.dirname(location[1])
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
186 basename = os.path.basename(location[1])
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
187 return hg_version(dirname, [basename])
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
188 except OSError, e:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
189 print >> sys.stderr, 'IGNORNING', e
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
190 return _unknown_version + ' PY_SOURCE'
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
191
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
192 def _import_id_py_compiled(location):
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
193 #a .pyc file was found, but no corresponding .py
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
194 return _unknown_version + ' PYC_COMPILED'
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
195
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
196 def _import_id_pkg_directory(location):
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
197 try:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
198 return hg_version(location[1])
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
199 except OSError, e:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
200 print >> sys.stderr, 'IGNORNING', e
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
201 return _unknown_version + ' PKG_DIRECTORY'
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
202
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
203 def _import_id(tag):
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
204 try :
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
205 location = _imp.find_module(tag)
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
206 except ImportError, e: #raise when tag is not found
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
207 return e #put this in the cache, import_id will raise it
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
208
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
209 #the find_module was successful, location is valid
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
210 resource_type = location[2][2]
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
211
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
212 if resource_type == _imp.PY_SOURCE:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
213 return _import_id_py_source(location)
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
214 if resource_type == _imp.PY_COMPILED:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
215 return _import_id_py_compiled(location)
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
216 if resource_type == _imp.C_EXTENSION:
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
217 raise NoteImplementedError
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
218 if resource_type == _imp.PY_RESOURCE:
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James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
219 raise NoteImplementedError
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
220 if resource_type == _imp.PKG_DIRECTORY:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
221 return _import_id_pkg_directory(location)
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
222 if resource_type == _imp.C_BUILTIN:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
223 raise NoteImplementedError
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
224 if resource_type == _imp.PY_FROZEN:
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
225 raise NoteImplementedError
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
226
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
227 assert False #the list of resource types above should be exhaustive
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
parents: 323
diff changeset
228
ce79bf5fa463 - the cut and paste between file and dir conditions is always a bad thing
James Bergstra <bergstrj@iro.umontreal.ca>
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diff changeset
229 def import_id(tag):
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230 """Return an identifier of the code imported by 'import <tag>'.
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231
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232 @param tag: a module or file name
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233 @type tag: string
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234
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235 @rtype: string
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236 @return: identifier of the code imported by 'import <tag>'.
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237
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238 This high-level function might do different things depending on, for
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239 example, whether I{tag} identifies a file or a directory, or whether the
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240 named entity is under some sort of version/revision control.
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241
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242 Versions are sought in the following order:
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243 0. If I{tag} is 'python' then sys.version will be returned
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244 1. If I{tag} names a file or folder under revision control, this function
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245 will attempt to guess which one, and return a string that identifies the
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246 running code (a revision id, not the whole file!)
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247 2. If I{tag} names a module with a __version__ attribute, then that
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248 attribute will be returned as a string.
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249 3. The string starting with 'unknown version' will be returned for other valid modules.
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250 4. An exception will be raise for non-existent modules.
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251
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252 @note: This function may import the named entity in order to return a
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253 __version__ module attribute.
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254
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255 """
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256 if tag not in import_id.cache:
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257 import_id.cache[tag] = _import_id(tag)
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258
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259 #in the case of bad module names, we cached the ImportError exception
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260 rval = import_id.cache[tag]
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261 if isinstance(rval, Exception):
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262 raise rval
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263 return rval
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264 import_id.cache = {'python':sys.version}
323
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265
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266 def get_all_src_versions() :
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267 """
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268 Get the version of all loaded module.
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269 Calls src_version on all loaded modules. These modules are found
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270 using sys.modules.
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271
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272 Returns a dictionnary: name->version.
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273
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274 @RETURN dict Dictionnary (module's name) -> (version)
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275 @SEE src_version
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276 """
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277 allmodules = sys.modules
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278 d = dict()
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279 for m in allmodules :
324
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280 try:
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281 d[m] = import_id(m)
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282 except:
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283 pass
323
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284 return d
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285
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286
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287 if __name__ == "__main__" :
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288
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289 if len(sys.argv) == 2 :
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290 print 'testing on', sys.argv[1]
324
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291 print import_id(sys.argv[1])
323
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292