Mercurial > babel > old > babel-test
comparison babel/util.py @ 167:06af84d082a3 stable-0.8.x
Ported [165], [167], and [169] to 0.8.x branch.
| author | cmlenz |
|---|---|
| date | Fri, 22 Jun 2007 11:13:10 +0000 |
| parents | 60565dc8495d |
| children |
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| 159:d8b5fb8af7ad | 167:06af84d082a3 |
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| 11 # individuals. For the exact contribution history, see the revision | 11 # individuals. For the exact contribution history, see the revision |
| 12 # history and logs, available at http://babel.edgewall.org/log/. | 12 # history and logs, available at http://babel.edgewall.org/log/. |
| 13 | 13 |
| 14 """Various utility classes and functions.""" | 14 """Various utility classes and functions.""" |
| 15 | 15 |
| 16 import codecs | |
| 16 from datetime import timedelta, tzinfo | 17 from datetime import timedelta, tzinfo |
| 17 import os | 18 import os |
| 19 import parser | |
| 18 import re | 20 import re |
| 19 import time | 21 import time |
| 20 | 22 |
| 21 __all__ = ['pathmatch', 'relpath', 'UTC', 'LOCALTZ'] | 23 __all__ = ['pathmatch', 'relpath', 'UTC', 'LOCALTZ'] |
| 22 __docformat__ = 'restructuredtext en' | 24 __docformat__ = 'restructuredtext en' |
| 25 | |
| 26 # Regexp to match python magic encoding line | |
| 27 PYTHON_MAGIC_COMMENT_re = re.compile( | |
| 28 r'[ \t\f]* \# .* coding[=:][ \t]*([-\w.]+)', re.VERBOSE) | |
| 29 def parse_encoding(fp): | |
| 30 """Deduce the encoding of a source file from magic comment. | |
| 31 | |
| 32 It does this in the same way as the `Python interpreter`__ | |
| 33 | |
| 34 .. __: http://docs.python.org/ref/encodings.html | |
| 35 | |
| 36 The ``fp`` argument should be a seekable file object. | |
| 37 | |
| 38 (From Jeff Dairiki) | |
| 39 """ | |
| 40 pos = fp.tell() | |
| 41 fp.seek(0) | |
| 42 try: | |
| 43 line1 = fp.readline() | |
| 44 has_bom = line1.startswith(codecs.BOM_UTF8) | |
| 45 if has_bom: | |
| 46 line1 = line1[len(codecs.BOM_UTF8):] | |
| 47 | |
| 48 m = PYTHON_MAGIC_COMMENT_re.match(line1) | |
| 49 if not m: | |
| 50 try: | |
| 51 parser.suite(line1) | |
| 52 except SyntaxError: | |
| 53 # Either it's a real syntax error, in which case the source is | |
| 54 # not valid python source, or line2 is a continuation of line1, | |
| 55 # in which case we don't want to scan line2 for a magic | |
| 56 # comment. | |
| 57 pass | |
| 58 else: | |
| 59 line2 = fp.readline() | |
| 60 m = PYTHON_MAGIC_COMMENT_re.match(line2) | |
| 61 | |
| 62 if has_bom: | |
| 63 if m: | |
| 64 raise SyntaxError( | |
| 65 "python refuses to compile code with both a UTF8 " | |
| 66 "byte-order-mark and a magic encoding comment") | |
| 67 return 'utf_8' | |
| 68 elif m: | |
| 69 return m.group(1) | |
| 70 else: | |
| 71 return None | |
| 72 finally: | |
| 73 fp.seek(pos) | |
| 23 | 74 |
| 24 def pathmatch(pattern, filename): | 75 def pathmatch(pattern, filename): |
| 25 """Extended pathname pattern matching. | 76 """Extended pathname pattern matching. |
| 26 | 77 |
| 27 This function is similar to what is provided by the ``fnmatch`` module in | 78 This function is similar to what is provided by the ``fnmatch`` module in |