Mercurial > babel > mirror
comparison babel/localedata.py @ 41:e46b7cd193ee trunk
Load locale data lazily to avoid penalizing usage of `Locale` objects when no locale data is actually needed.
| author | cmlenz |
|---|---|
| date | Wed, 06 Jun 2007 12:12:44 +0000 |
| parents | 6041782ea677 |
| children | c3bf81204393 |
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| 40:0739bc8e7210 | 41:e46b7cd193ee |
|---|---|
| 28 __all__ = ['load'] | 28 __all__ = ['load'] |
| 29 __docformat__ = 'restructuredtext en' | 29 __docformat__ = 'restructuredtext en' |
| 30 | 30 |
| 31 _cache = {} | 31 _cache = {} |
| 32 _cache_lock = threading.RLock() | 32 _cache_lock = threading.RLock() |
| 33 _dirname = os.path.join(os.path.dirname(__file__), 'localedata') | |
| 34 | |
| 35 def exists(name): | |
| 36 """Check whether locale data is available for the given locale. | |
| 37 | |
| 38 :param name: the locale identifier string | |
| 39 :return: `True` if the locale data exists, `False` otherwise | |
| 40 :rtype: `bool` | |
| 41 """ | |
| 42 if name in _cache: | |
| 43 return True | |
| 44 return os.path.exists(os.path.join(_dirname, '%s.dat' % name)) | |
| 33 | 45 |
| 34 def load(name): | 46 def load(name): |
| 35 """Load the locale data for the given locale. | 47 """Load the locale data for the given locale. |
| 36 | 48 |
| 37 The locale data is a dictionary that contains much of the data defined by | 49 The locale data is a dictionary that contains much of the data defined by |
| 68 if len(parts) == 1: | 80 if len(parts) == 1: |
| 69 parent = 'root' | 81 parent = 'root' |
| 70 else: | 82 else: |
| 71 parent = '_'.join(parts[:-1]) | 83 parent = '_'.join(parts[:-1]) |
| 72 data = load(parent).copy() | 84 data = load(parent).copy() |
| 73 filename = os.path.join(os.path.dirname(__file__), | 85 filename = os.path.join(_dirname, '%s.dat' % name) |
| 74 'localedata/%s.dat' % name) | |
| 75 fileobj = open(filename, 'rb') | 86 fileobj = open(filename, 'rb') |
| 76 try: | 87 try: |
| 77 if name != 'root': | 88 if name != 'root': |
| 78 merge(data, pickle.load(fileobj)) | 89 merge(data, pickle.load(fileobj)) |
| 79 else: | 90 else: |