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![Christian Heimes](/assets/img/avatar_default.png)
svn+ssh://pythondev@svn.python.org/python/trunk ........ r61239 | andrew.kuchling | 2008-03-05 01:44:41 +0100 (Wed, 05 Mar 2008) | 1 line Add more items; add fragmentary notes ........ r61240 | amaury.forgeotdarc | 2008-03-05 02:50:33 +0100 (Wed, 05 Mar 2008) | 13 lines Issue#2238: some syntax errors from *args or **kwargs expressions would give bogus error messages, because of untested exceptions:: >>> f(**g(1=2)) XXX undetected error Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'int' object is not iterable instead of the expected SyntaxError: keyword can't be an expression Will backport. ........ r61241 | neal.norwitz | 2008-03-05 06:10:48 +0100 (Wed, 05 Mar 2008) | 3 lines Remove the files/dirs after closing the DB so the tests work on Windows. Patch from Trent Nelson. Also simplified removing a file by using test_support. ........ r61242 | neal.norwitz | 2008-03-05 06:14:18 +0100 (Wed, 05 Mar 2008) | 3 lines Get this test to pass even when there is no sound card in the system. Patch from Trent Nelson. (I can't test this.) ........ r61243 | neal.norwitz | 2008-03-05 06:20:44 +0100 (Wed, 05 Mar 2008) | 3 lines Catch OSError when trying to remove a file in case removal fails. This should prevent a failure in tearDown masking any real test failure. ........ r61244 | neal.norwitz | 2008-03-05 06:38:06 +0100 (Wed, 05 Mar 2008) | 5 lines Make the timeout longer to give slow machines a chance to pass the test before timing out. This doesn't change the duration of the test under normal circumstances. This is targetted at fixing the spurious failures on the FreeBSD buildbot primarily. ........ r61245 | neal.norwitz | 2008-03-05 06:49:03 +0100 (Wed, 05 Mar 2008) | 1 line Tabs -> spaces ........ r61246 | neal.norwitz | 2008-03-05 06:50:20 +0100 (Wed, 05 Mar 2008) | 1 line Use -u urlfetch to run more tests ........ r61247 | neal.norwitz | 2008-03-05 06:51:20 +0100 (Wed, 05 Mar 2008) | 1 line test_smtplib sometimes reports leaks too, suppress it ........ r61248 | jeffrey.yasskin | 2008-03-05 07:19:56 +0100 (Wed, 05 Mar 2008) | 5 lines Fix test_socketserver on Windows after r61099 added several signal.alarm() calls (which don't exist on non-Unix platforms). Thanks to Trent Nelson for the report and patch. ........ r61249 | georg.brandl | 2008-03-05 08:10:35 +0100 (Wed, 05 Mar 2008) | 2 lines Fix some rst. ........ r61252 | thomas.heller | 2008-03-05 15:53:39 +0100 (Wed, 05 Mar 2008) | 2 lines News entry for yesterdays commit. ........ r61253 | thomas.heller | 2008-03-05 16:34:29 +0100 (Wed, 05 Mar 2008) | 3 lines Issue 1872: Changed the struct module typecode from 't' to '?', for compatibility with PEP3118. ........ r61254 | skip.montanaro | 2008-03-05 17:41:09 +0100 (Wed, 05 Mar 2008) | 4 lines Elaborate on the role of the altinstall target when installing multiple versions. ........ r61255 | georg.brandl | 2008-03-05 20:31:44 +0100 (Wed, 05 Mar 2008) | 2 lines #2239: PYTHONPATH delimiter is os.pathsep. ........ r61256 | raymond.hettinger | 2008-03-05 21:59:58 +0100 (Wed, 05 Mar 2008) | 1 line C implementation of itertools.permutations(). ........ r61257 | raymond.hettinger | 2008-03-05 22:04:32 +0100 (Wed, 05 Mar 2008) | 1 line Small code cleanup. ........ r61260 | martin.v.loewis | 2008-03-05 23:24:31 +0100 (Wed, 05 Mar 2008) | 2 lines cd PCbuild only after deleting all pyc files. ........ r61261 | raymond.hettinger | 2008-03-06 02:15:52 +0100 (Thu, 06 Mar 2008) | 1 line Add examples. ........ r61262 | andrew.kuchling | 2008-03-06 02:36:27 +0100 (Thu, 06 Mar 2008) | 1 line Add two items ........ r61263 | georg.brandl | 2008-03-06 07:47:18 +0100 (Thu, 06 Mar 2008) | 2 lines #1725737: ignore other VC directories other than CVS and SVN's too. ........ r61264 | martin.v.loewis | 2008-03-06 07:55:22 +0100 (Thu, 06 Mar 2008) | 4 lines Patch #2232: os.tmpfile might fail on Windows if the user has no permission to create files in the root directory. Will backport to 2.5. ........ r61269 | georg.brandl | 2008-03-06 08:19:15 +0100 (Thu, 06 Mar 2008) | 2 lines Expand on re.split behavior with captured expressions. ........ r61270 | georg.brandl | 2008-03-06 08:22:09 +0100 (Thu, 06 Mar 2008) | 2 lines Little clarification of assignments. ........ r61271 | georg.brandl | 2008-03-06 08:31:34 +0100 (Thu, 06 Mar 2008) | 2 lines Add isinstance/issubclass to tutorial. ........ r61272 | georg.brandl | 2008-03-06 08:34:52 +0100 (Thu, 06 Mar 2008) | 2 lines Add missing NEWS entry for r61263. ........ r61273 | georg.brandl | 2008-03-06 08:41:16 +0100 (Thu, 06 Mar 2008) | 2 lines #2225: return nonzero status code from py_compile if not all files could be compiled. ........ r61274 | georg.brandl | 2008-03-06 08:43:02 +0100 (Thu, 06 Mar 2008) | 2 lines #2220: handle matching failure more gracefully. ........ r61275 | georg.brandl | 2008-03-06 08:45:52 +0100 (Thu, 06 Mar 2008) | 2 lines Bug #2220: handle rlcompleter attribute match failure more gracefully. ........ r61278 | martin.v.loewis | 2008-03-06 14:49:47 +0100 (Thu, 06 Mar 2008) | 1 line Rely on x64 platform configuration when building _bsddb on AMD64. ........ r61279 | martin.v.loewis | 2008-03-06 14:50:28 +0100 (Thu, 06 Mar 2008) | 1 line Update db-4.4.20 build procedure. ........ r61285 | raymond.hettinger | 2008-03-06 21:52:01 +0100 (Thu, 06 Mar 2008) | 1 line More tests. ........ r61286 | raymond.hettinger | 2008-03-06 23:51:36 +0100 (Thu, 06 Mar 2008) | 1 line Issue 2246: itertools grouper object did not participate in GC (should be backported). ........ r61288 | raymond.hettinger | 2008-03-07 02:33:20 +0100 (Fri, 07 Mar 2008) | 1 line Tweak recipes and tests ........ r61289 | jeffrey.yasskin | 2008-03-07 07:22:15 +0100 (Fri, 07 Mar 2008) | 5 lines Progress on issue #1193577 by adding a polling .shutdown() method to SocketServers. The core of the patch was written by Pedro Werneck, but any bugs are mine. I've also rearranged the code for timeouts in order to avoid interfering with the shutdown poll. ........ r61290 | nick.coghlan | 2008-03-07 15:13:28 +0100 (Fri, 07 Mar 2008) | 1 line Speed up with statements by storing the __exit__ method on the stack instead of in a temp variable (bumps the magic number for pyc files) ........ r61298 | andrew.kuchling | 2008-03-07 22:09:23 +0100 (Fri, 07 Mar 2008) | 1 line Grammar fix ........ r61303 | georg.brandl | 2008-03-08 10:54:06 +0100 (Sat, 08 Mar 2008) | 2 lines #2253: fix continue vs. finally docs. ........ r61304 | marc-andre.lemburg | 2008-03-08 11:01:43 +0100 (Sat, 08 Mar 2008) | 3 lines Add new name for Mandrake: Mandriva. ........ r61305 | georg.brandl | 2008-03-08 11:05:24 +0100 (Sat, 08 Mar 2008) | 2 lines #1533486: fix types in refcount intro. ........ r61312 | facundo.batista | 2008-03-08 17:50:27 +0100 (Sat, 08 Mar 2008) | 5 lines Issue 1106316. post_mortem()'s parameter, traceback, is now optional: it defaults to the traceback of the exception that is currently being handled. ........ r61313 | jeffrey.yasskin | 2008-03-08 19:26:54 +0100 (Sat, 08 Mar 2008) | 2 lines Add tests for with and finally performance to pybench. ........ r61314 | jeffrey.yasskin | 2008-03-08 21:08:21 +0100 (Sat, 08 Mar 2008) | 2 lines Fix pybench for pythons < 2.6, tested back to 2.3. ........ r61317 | jeffrey.yasskin | 2008-03-08 22:35:15 +0100 (Sat, 08 Mar 2008) | 3 lines Well that was dumb. platform.python_implementation returns a function, not a string. ........ r61329 | georg.brandl | 2008-03-09 16:11:39 +0100 (Sun, 09 Mar 2008) | 2 lines #2249: document assertTrue and assertFalse. ........ r61332 | neal.norwitz | 2008-03-09 20:03:42 +0100 (Sun, 09 Mar 2008) | 4 lines Introduce a lock to fix a race condition which caused an exception in the test. Some buildbots were consistently failing (e.g., amd64). Also remove a couple of semi-colons. ........ r61344 | raymond.hettinger | 2008-03-11 01:19:07 +0100 (Tue, 11 Mar 2008) | 1 line Add recipe to docs. ........ r61350 | guido.van.rossum | 2008-03-11 22:18:06 +0100 (Tue, 11 Mar 2008) | 3 lines Fix the overflows in expandtabs(). "This time for sure!" (Exploit at request.) ........ r61351 | raymond.hettinger | 2008-03-11 22:37:46 +0100 (Tue, 11 Mar 2008) | 1 line Improve docs for itemgetter(). Show that it works with slices. ........ r61363 | georg.brandl | 2008-03-13 08:15:56 +0100 (Thu, 13 Mar 2008) | 2 lines #2265: fix example. ........ r61364 | georg.brandl | 2008-03-13 08:17:14 +0100 (Thu, 13 Mar 2008) | 2 lines #2270: fix typo. ........ r61365 | georg.brandl | 2008-03-13 08:21:41 +0100 (Thu, 13 Mar 2008) | 2 lines #1720705: add docs about import/threading interaction, wording by Nick. ........ r61366 | andrew.kuchling | 2008-03-13 12:07:35 +0100 (Thu, 13 Mar 2008) | 1 line Add class decorators ........ r61367 | raymond.hettinger | 2008-03-13 17:43:17 +0100 (Thu, 13 Mar 2008) | 1 line Add 2-to-3 support for the itertools moved to builtins or renamed. ........ r61368 | raymond.hettinger | 2008-03-13 17:43:59 +0100 (Thu, 13 Mar 2008) | 1 line Consistent tense. ........ r61369 | raymond.hettinger | 2008-03-13 20:03:51 +0100 (Thu, 13 Mar 2008) | 1 line Issue 2274: Add heapq.heappushpop(). ........ r61370 | raymond.hettinger | 2008-03-13 20:33:34 +0100 (Thu, 13 Mar 2008) | 1 line Simplify the nlargest() code using heappushpop(). ........ r61371 | brett.cannon | 2008-03-13 21:27:00 +0100 (Thu, 13 Mar 2008) | 4 lines Move test_thread over to unittest. Commits GHOP 237. Thanks Benjamin Peterson for the patch. ........ r61372 | brett.cannon | 2008-03-13 21:33:10 +0100 (Thu, 13 Mar 2008) | 4 lines Move test_tokenize to doctest. Done as GHOP 238 by Josip Dzolonga. ........ r61373 | brett.cannon | 2008-03-13 21:47:41 +0100 (Thu, 13 Mar 2008) | 4 lines Convert test_contains, test_crypt, and test_select to unittest. Patch from GHOP 294 by David Marek. ........ r61374 | brett.cannon | 2008-03-13 22:02:16 +0100 (Thu, 13 Mar 2008) | 4 lines Move test_gdbm to use unittest. Closes issue #1960. Thanks Giampaolo Rodola. ........ r61375 | brett.cannon | 2008-03-13 22:09:28 +0100 (Thu, 13 Mar 2008) | 4 lines Convert test_fcntl to unittest. Closes issue #2055. Thanks Giampaolo Rodola. ........ r61376 | raymond.hettinger | 2008-03-14 06:03:44 +0100 (Fri, 14 Mar 2008) | 1 line Leave heapreplace() unchanged. ........ r61378 | martin.v.loewis | 2008-03-14 14:56:09 +0100 (Fri, 14 Mar 2008) | 2 lines Patch #2284: add -x64 option to rt.bat. ........ r61379 | martin.v.loewis | 2008-03-14 14:57:59 +0100 (Fri, 14 Mar 2008) | 2 lines Use -x64 flag. ........ r61382 | brett.cannon | 2008-03-14 15:03:10 +0100 (Fri, 14 Mar 2008) | 2 lines Remove a bad test. ........ r61383 | mark.dickinson | 2008-03-14 15:23:37 +0100 (Fri, 14 Mar 2008) | 9 lines Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently across platforms: it should now raise OverflowError on all platforms. (Previously it raised OverflowError only on non IEEE 754 platforms.) Also fix the (already existing) test for this behaviour so that it actually raises TestFailed instead of just referencing it. ........ r61387 | thomas.heller | 2008-03-14 22:06:21 +0100 (Fri, 14 Mar 2008) | 1 line Remove unneeded initializer. ........ r61388 | martin.v.loewis | 2008-03-14 22:19:28 +0100 (Fri, 14 Mar 2008) | 2 lines Run debug version, cd to PCbuild. ........ r61392 | georg.brandl | 2008-03-15 00:10:34 +0100 (Sat, 15 Mar 2008) | 2 lines Remove obsolete paragraph. #2288. ........ r61395 | georg.brandl | 2008-03-15 01:20:19 +0100 (Sat, 15 Mar 2008) | 2 lines Fix lots of broken links in the docs, found by Sphinx' external link checker. ........ r61396 | skip.montanaro | 2008-03-15 03:32:49 +0100 (Sat, 15 Mar 2008) | 1 line note that fork and forkpty raise OSError on failure ........ r61402 | skip.montanaro | 2008-03-15 17:04:45 +0100 (Sat, 15 Mar 2008) | 1 line add %f format to datetime - issue 1158 ........ r61403 | skip.montanaro | 2008-03-15 17:07:11 +0100 (Sat, 15 Mar 2008) | 2 lines . ........
455 lines
19 KiB
Python
455 lines
19 KiB
Python
"""Strptime-related classes and functions.
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CLASSES:
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LocaleTime -- Discovers and stores locale-specific time information
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TimeRE -- Creates regexes for pattern matching a string of text containing
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time information
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FUNCTIONS:
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_getlang -- Figure out what language is being used for the locale
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strptime -- Calculates the time struct represented by the passed-in string
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"""
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import time
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import locale
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import calendar
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from re import compile as re_compile
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from re import IGNORECASE
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from re import escape as re_escape
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from datetime import date as datetime_date
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try:
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from thread import allocate_lock as _thread_allocate_lock
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except:
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from dummy_thread import allocate_lock as _thread_allocate_lock
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__all__ = []
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def _getlang():
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# Figure out what the current language is set to.
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return locale.getlocale(locale.LC_TIME)
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class LocaleTime(object):
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"""Stores and handles locale-specific information related to time.
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ATTRIBUTES:
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f_weekday -- full weekday names (7-item list)
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a_weekday -- abbreviated weekday names (7-item list)
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f_month -- full month names (13-item list; dummy value in [0], which
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is added by code)
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a_month -- abbreviated month names (13-item list, dummy value in
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[0], which is added by code)
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am_pm -- AM/PM representation (2-item list)
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LC_date_time -- format string for date/time representation (string)
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LC_date -- format string for date representation (string)
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LC_time -- format string for time representation (string)
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timezone -- daylight- and non-daylight-savings timezone representation
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(2-item list of sets)
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lang -- Language used by instance (2-item tuple)
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"""
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def __init__(self):
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"""Set all attributes.
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Order of methods called matters for dependency reasons.
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The locale language is set at the offset and then checked again before
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exiting. This is to make sure that the attributes were not set with a
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mix of information from more than one locale. This would most likely
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happen when using threads where one thread calls a locale-dependent
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function while another thread changes the locale while the function in
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the other thread is still running. Proper coding would call for
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locks to prevent changing the locale while locale-dependent code is
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running. The check here is done in case someone does not think about
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doing this.
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Only other possible issue is if someone changed the timezone and did
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not call tz.tzset . That is an issue for the programmer, though,
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since changing the timezone is worthless without that call.
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"""
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self.lang = _getlang()
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self.__calc_weekday()
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self.__calc_month()
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self.__calc_am_pm()
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self.__calc_timezone()
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self.__calc_date_time()
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if _getlang() != self.lang:
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raise ValueError("locale changed during initialization")
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def __pad(self, seq, front):
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# Add '' to seq to either the front (is True), else the back.
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seq = list(seq)
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if front:
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seq.insert(0, '')
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else:
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seq.append('')
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return seq
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def __calc_weekday(self):
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# Set self.a_weekday and self.f_weekday using the calendar
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# module.
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a_weekday = [calendar.day_abbr[i].lower() for i in range(7)]
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f_weekday = [calendar.day_name[i].lower() for i in range(7)]
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self.a_weekday = a_weekday
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self.f_weekday = f_weekday
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def __calc_month(self):
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# Set self.f_month and self.a_month using the calendar module.
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a_month = [calendar.month_abbr[i].lower() for i in range(13)]
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f_month = [calendar.month_name[i].lower() for i in range(13)]
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self.a_month = a_month
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self.f_month = f_month
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def __calc_am_pm(self):
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# Set self.am_pm by using time.strftime().
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# The magic date (1999,3,17,hour,44,55,2,76,0) is not really that
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# magical; just happened to have used it everywhere else where a
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# static date was needed.
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am_pm = []
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for hour in (1, 22):
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time_tuple = time.struct_time((1999,3,17,hour,44,55,2,76,0))
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am_pm.append(time.strftime("%p", time_tuple).lower())
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self.am_pm = am_pm
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def __calc_date_time(self):
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# Set self.date_time, self.date, & self.time by using
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# time.strftime().
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# Use (1999,3,17,22,44,55,2,76,0) for magic date because the amount of
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# overloaded numbers is minimized. The order in which searches for
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# values within the format string is very important; it eliminates
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# possible ambiguity for what something represents.
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time_tuple = time.struct_time((1999,3,17,22,44,55,2,76,0))
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date_time = [None, None, None]
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date_time[0] = time.strftime("%c", time_tuple).lower()
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date_time[1] = time.strftime("%x", time_tuple).lower()
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date_time[2] = time.strftime("%X", time_tuple).lower()
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replacement_pairs = [('%', '%%'), (self.f_weekday[2], '%A'),
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(self.f_month[3], '%B'), (self.a_weekday[2], '%a'),
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(self.a_month[3], '%b'), (self.am_pm[1], '%p'),
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('1999', '%Y'), ('99', '%y'), ('22', '%H'),
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('44', '%M'), ('55', '%S'), ('76', '%j'),
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('17', '%d'), ('03', '%m'), ('3', '%m'),
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# '3' needed for when no leading zero.
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('2', '%w'), ('10', '%I')]
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replacement_pairs.extend([(tz, "%Z") for tz_values in self.timezone
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for tz in tz_values])
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for offset,directive in ((0,'%c'), (1,'%x'), (2,'%X')):
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current_format = date_time[offset]
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for old, new in replacement_pairs:
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# Must deal with possible lack of locale info
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# manifesting itself as the empty string (e.g., Swedish's
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# lack of AM/PM info) or a platform returning a tuple of empty
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# strings (e.g., MacOS 9 having timezone as ('','')).
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if old:
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current_format = current_format.replace(old, new)
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# If %W is used, then Sunday, 2005-01-03 will fall on week 0 since
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# 2005-01-03 occurs before the first Monday of the year. Otherwise
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# %U is used.
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time_tuple = time.struct_time((1999,1,3,1,1,1,6,3,0))
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if '00' in time.strftime(directive, time_tuple):
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U_W = '%W'
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else:
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U_W = '%U'
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date_time[offset] = current_format.replace('11', U_W)
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self.LC_date_time = date_time[0]
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self.LC_date = date_time[1]
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self.LC_time = date_time[2]
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def __calc_timezone(self):
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# Set self.timezone by using time.tzname.
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# Do not worry about possibility of time.tzname[0] == timetzname[1]
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# and time.daylight; handle that in strptime .
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try:
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time.tzset()
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except AttributeError:
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pass
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no_saving = frozenset(["utc", "gmt", time.tzname[0].lower()])
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if time.daylight:
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has_saving = frozenset([time.tzname[1].lower()])
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else:
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has_saving = frozenset()
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self.timezone = (no_saving, has_saving)
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class TimeRE(dict):
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"""Handle conversion from format directives to regexes."""
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def __init__(self, locale_time=None):
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"""Create keys/values.
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Order of execution is important for dependency reasons.
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"""
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if locale_time:
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self.locale_time = locale_time
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else:
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self.locale_time = LocaleTime()
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base = super()
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base.__init__({
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# The " \d" part of the regex is to make %c from ANSI C work
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'd': r"(?P<d>3[0-1]|[1-2]\d|0[1-9]|[1-9]| [1-9])",
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'f': r"(?P<f>[0-9]{1,6})",
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'H': r"(?P<H>2[0-3]|[0-1]\d|\d)",
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'I': r"(?P<I>1[0-2]|0[1-9]|[1-9])",
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'j': r"(?P<j>36[0-6]|3[0-5]\d|[1-2]\d\d|0[1-9]\d|00[1-9]|[1-9]\d|0[1-9]|[1-9])",
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'm': r"(?P<m>1[0-2]|0[1-9]|[1-9])",
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'M': r"(?P<M>[0-5]\d|\d)",
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'S': r"(?P<S>6[0-1]|[0-5]\d|\d)",
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'U': r"(?P<U>5[0-3]|[0-4]\d|\d)",
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'w': r"(?P<w>[0-6])",
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# W is set below by using 'U'
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'y': r"(?P<y>\d\d)",
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#XXX: Does 'Y' need to worry about having less or more than
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# 4 digits?
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'Y': r"(?P<Y>\d\d\d\d)",
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'A': self.__seqToRE(self.locale_time.f_weekday, 'A'),
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'a': self.__seqToRE(self.locale_time.a_weekday, 'a'),
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'B': self.__seqToRE(self.locale_time.f_month[1:], 'B'),
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'b': self.__seqToRE(self.locale_time.a_month[1:], 'b'),
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'p': self.__seqToRE(self.locale_time.am_pm, 'p'),
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'Z': self.__seqToRE((tz for tz_names in self.locale_time.timezone
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for tz in tz_names),
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'Z'),
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'%': '%'})
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base.__setitem__('W', base.__getitem__('U').replace('U', 'W'))
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base.__setitem__('c', self.pattern(self.locale_time.LC_date_time))
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base.__setitem__('x', self.pattern(self.locale_time.LC_date))
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base.__setitem__('X', self.pattern(self.locale_time.LC_time))
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def __seqToRE(self, to_convert, directive):
|
|
"""Convert a list to a regex string for matching a directive.
|
|
|
|
Want possible matching values to be from longest to shortest. This
|
|
prevents the possibility of a match occuring for a value that also
|
|
a substring of a larger value that should have matched (e.g., 'abc'
|
|
matching when 'abcdef' should have been the match).
|
|
|
|
"""
|
|
to_convert = sorted(to_convert, key=len, reverse=True)
|
|
for value in to_convert:
|
|
if value != '':
|
|
break
|
|
else:
|
|
return ''
|
|
regex = '|'.join(re_escape(stuff) for stuff in to_convert)
|
|
regex = '(?P<%s>%s' % (directive, regex)
|
|
return '%s)' % regex
|
|
|
|
def pattern(self, format):
|
|
"""Return regex pattern for the format string.
|
|
|
|
Need to make sure that any characters that might be interpreted as
|
|
regex syntax are escaped.
|
|
|
|
"""
|
|
processed_format = ''
|
|
# The sub() call escapes all characters that might be misconstrued
|
|
# as regex syntax. Cannot use re.escape since we have to deal with
|
|
# format directives (%m, etc.).
|
|
regex_chars = re_compile(r"([\\.^$*+?\(\){}\[\]|])")
|
|
format = regex_chars.sub(r"\\\1", format)
|
|
whitespace_replacement = re_compile('\s+')
|
|
format = whitespace_replacement.sub('\s+', format)
|
|
while '%' in format:
|
|
directive_index = format.index('%')+1
|
|
processed_format = "%s%s%s" % (processed_format,
|
|
format[:directive_index-1],
|
|
self[format[directive_index]])
|
|
format = format[directive_index+1:]
|
|
return "%s%s" % (processed_format, format)
|
|
|
|
def compile(self, format):
|
|
"""Return a compiled re object for the format string."""
|
|
return re_compile(self.pattern(format), IGNORECASE)
|
|
|
|
_cache_lock = _thread_allocate_lock()
|
|
# DO NOT modify _TimeRE_cache or _regex_cache without acquiring the cache lock
|
|
# first!
|
|
_TimeRE_cache = TimeRE()
|
|
_CACHE_MAX_SIZE = 5 # Max number of regexes stored in _regex_cache
|
|
_regex_cache = {}
|
|
|
|
def _calc_julian_from_U_or_W(year, week_of_year, day_of_week, week_starts_Mon):
|
|
"""Calculate the Julian day based on the year, week of the year, and day of
|
|
the week, with week_start_day representing whether the week of the year
|
|
assumes the week starts on Sunday or Monday (6 or 0)."""
|
|
first_weekday = datetime_date(year, 1, 1).weekday()
|
|
# If we are dealing with the %U directive (week starts on Sunday), it's
|
|
# easier to just shift the view to Sunday being the first day of the
|
|
# week.
|
|
if not week_starts_Mon:
|
|
first_weekday = (first_weekday + 1) % 7
|
|
day_of_week = (day_of_week + 1) % 7
|
|
# Need to watch out for a week 0 (when the first day of the year is not
|
|
# the same as that specified by %U or %W).
|
|
week_0_length = (7 - first_weekday) % 7
|
|
if week_of_year == 0:
|
|
return 1 + day_of_week - first_weekday
|
|
else:
|
|
days_to_week = week_0_length + (7 * (week_of_year - 1))
|
|
return 1 + days_to_week + day_of_week
|
|
|
|
|
|
def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
|
|
"""Return a time struct based on the input string and the format string."""
|
|
global _TimeRE_cache, _regex_cache
|
|
with _cache_lock:
|
|
if _getlang() != _TimeRE_cache.locale_time.lang:
|
|
_TimeRE_cache = TimeRE()
|
|
_regex_cache.clear()
|
|
if len(_regex_cache) > _CACHE_MAX_SIZE:
|
|
_regex_cache.clear()
|
|
locale_time = _TimeRE_cache.locale_time
|
|
format_regex = _regex_cache.get(format)
|
|
if not format_regex:
|
|
try:
|
|
format_regex = _TimeRE_cache.compile(format)
|
|
# KeyError raised when a bad format is found; can be specified as
|
|
# \\, in which case it was a stray % but with a space after it
|
|
except KeyError as err:
|
|
bad_directive = err.args[0]
|
|
if bad_directive == "\\":
|
|
bad_directive = "%"
|
|
del err
|
|
raise ValueError("'%s' is a bad directive in format '%s'" %
|
|
(bad_directive, format))
|
|
# IndexError only occurs when the format string is "%"
|
|
except IndexError:
|
|
raise ValueError("stray %% in format '%s'" % format)
|
|
_regex_cache[format] = format_regex
|
|
found = format_regex.match(data_string)
|
|
if not found:
|
|
raise ValueError("time data %r does not match format %r" %
|
|
(data_string, format))
|
|
if len(data_string) != found.end():
|
|
raise ValueError("unconverted data remains: %s" %
|
|
data_string[found.end():])
|
|
year = 1900
|
|
month = day = 1
|
|
hour = minute = second = fraction = 0
|
|
tz = -1
|
|
# Default to -1 to signify that values not known; not critical to have,
|
|
# though
|
|
week_of_year = -1
|
|
week_of_year_start = -1
|
|
# weekday and julian defaulted to -1 so as to signal need to calculate
|
|
# values
|
|
weekday = julian = -1
|
|
found_dict = found.groupdict()
|
|
for group_key in found_dict.keys():
|
|
# Directives not explicitly handled below:
|
|
# c, x, X
|
|
# handled by making out of other directives
|
|
# U, W
|
|
# worthless without day of the week
|
|
if group_key == 'y':
|
|
year = int(found_dict['y'])
|
|
# Open Group specification for strptime() states that a %y
|
|
#value in the range of [00, 68] is in the century 2000, while
|
|
#[69,99] is in the century 1900
|
|
if year <= 68:
|
|
year += 2000
|
|
else:
|
|
year += 1900
|
|
elif group_key == 'Y':
|
|
year = int(found_dict['Y'])
|
|
elif group_key == 'm':
|
|
month = int(found_dict['m'])
|
|
elif group_key == 'B':
|
|
month = locale_time.f_month.index(found_dict['B'].lower())
|
|
elif group_key == 'b':
|
|
month = locale_time.a_month.index(found_dict['b'].lower())
|
|
elif group_key == 'd':
|
|
day = int(found_dict['d'])
|
|
elif group_key == 'H':
|
|
hour = int(found_dict['H'])
|
|
elif group_key == 'I':
|
|
hour = int(found_dict['I'])
|
|
ampm = found_dict.get('p', '').lower()
|
|
# If there was no AM/PM indicator, we'll treat this like AM
|
|
if ampm in ('', locale_time.am_pm[0]):
|
|
# We're in AM so the hour is correct unless we're
|
|
# looking at 12 midnight.
|
|
# 12 midnight == 12 AM == hour 0
|
|
if hour == 12:
|
|
hour = 0
|
|
elif ampm == locale_time.am_pm[1]:
|
|
# We're in PM so we need to add 12 to the hour unless
|
|
# we're looking at 12 noon.
|
|
# 12 noon == 12 PM == hour 12
|
|
if hour != 12:
|
|
hour += 12
|
|
elif group_key == 'M':
|
|
minute = int(found_dict['M'])
|
|
elif group_key == 'S':
|
|
second = int(found_dict['S'])
|
|
elif group_key == 'f':
|
|
s = found_dict['f']
|
|
# Pad to always return microseconds.
|
|
s += "0" * (6 - len(s))
|
|
fraction = int(s)
|
|
elif group_key == 'A':
|
|
weekday = locale_time.f_weekday.index(found_dict['A'].lower())
|
|
elif group_key == 'a':
|
|
weekday = locale_time.a_weekday.index(found_dict['a'].lower())
|
|
elif group_key == 'w':
|
|
weekday = int(found_dict['w'])
|
|
if weekday == 0:
|
|
weekday = 6
|
|
else:
|
|
weekday -= 1
|
|
elif group_key == 'j':
|
|
julian = int(found_dict['j'])
|
|
elif group_key in ('U', 'W'):
|
|
week_of_year = int(found_dict[group_key])
|
|
if group_key == 'U':
|
|
# U starts week on Sunday.
|
|
week_of_year_start = 6
|
|
else:
|
|
# W starts week on Monday.
|
|
week_of_year_start = 0
|
|
elif group_key == 'Z':
|
|
# Since -1 is default value only need to worry about setting tz if
|
|
# it can be something other than -1.
|
|
found_zone = found_dict['Z'].lower()
|
|
for value, tz_values in enumerate(locale_time.timezone):
|
|
if found_zone in tz_values:
|
|
# Deal with bad locale setup where timezone names are the
|
|
# same and yet time.daylight is true; too ambiguous to
|
|
# be able to tell what timezone has daylight savings
|
|
if (time.tzname[0] == time.tzname[1] and
|
|
time.daylight and found_zone not in ("utc", "gmt")):
|
|
break
|
|
else:
|
|
tz = value
|
|
break
|
|
# If we know the week of the year and what day of that week, we can figure
|
|
# out the Julian day of the year.
|
|
if julian == -1 and week_of_year != -1 and weekday != -1:
|
|
week_starts_Mon = True if week_of_year_start == 0 else False
|
|
julian = _calc_julian_from_U_or_W(year, week_of_year, weekday,
|
|
week_starts_Mon)
|
|
# Cannot pre-calculate datetime_date() since can change in Julian
|
|
# calculation and thus could have different value for the day of the week
|
|
# calculation.
|
|
if julian == -1:
|
|
# Need to add 1 to result since first day of the year is 1, not 0.
|
|
julian = datetime_date(year, month, day).toordinal() - \
|
|
datetime_date(year, 1, 1).toordinal() + 1
|
|
else: # Assume that if they bothered to include Julian day it will
|
|
# be accurate.
|
|
datetime_result = datetime_date.fromordinal((julian - 1) + datetime_date(year, 1, 1).toordinal())
|
|
year = datetime_result.year
|
|
month = datetime_result.month
|
|
day = datetime_result.day
|
|
if weekday == -1:
|
|
weekday = datetime_date(year, month, day).weekday()
|
|
return (time.struct_time((year, month, day,
|
|
hour, minute, second,
|
|
weekday, julian, tz)), fraction)
|
|
|
|
def _strptime_time(data_string, format="%a %b %d %H:%M:%S %Y"):
|
|
return _strptime(data_string, format)[0]
|