Mercurial > cpython-lru_cache-weakref

annotate Lib/tzparse.py @ 4566:6403c94de50d legacy-trunk

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Added safeguard against failure in __del__.
author Guido van Rossum <guido@python.org>
date Wed, 27 Nov 1996 19:39:58 +0000
parents 1940892d2fe3
children 24da035ceb6e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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245003c006a6 Misc changes and new modules. whrandom is "objectified". SOCKET.py
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1 # Parse a timezone specification.
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2 # XXX Unfinished.
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3 # XXX Only the typical form "XXXhhYYY;ddd/hh,ddd/hh" is currently supported.
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5 tzpat = '^\([A-Z][A-Z][A-Z]\)\([-+]?[0-9]+\)\([A-Z][A-Z][A-Z]\);' + \
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6 '\([0-9]+\)/\([0-9]+\),\([0-9]+\)/\([0-9]+\)$'
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7
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8 tzprog = None
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9
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10 def tzparse(tzstr):
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11 global tzprog
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12 if tzprog == None:
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13 import regex
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14 tzprog = regex.compile(tzpat)
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15 if tzprog.match(tzstr) < 0:
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16 raise ValueError, 'not the TZ syntax I understand'
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17 regs = tzprog.regs
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18 subs = []
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19 for i in range(1, 8):
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20 a, b = regs[i]
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21 subs.append(tzstr[a:b])
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22 for i in (1, 3, 4, 5, 6):
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23 subs[i] = eval(subs[i])
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24 [tzname, delta, dstname, daystart, hourstart, dayend, hourend] = subs
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25 return (tzname, delta, dstname, daystart, hourstart, dayend, hourend)
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26
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27 def tzlocaltime(secs, params):
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28 import time
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29 (tzname, delta, dstname, daystart, hourstart, dayend, hourend) = params
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30 year, month, days, hours, mins, secs, yday, wday, isdst = \
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31 time.gmtime(secs - delta*3600)
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32 if (daystart, hourstart) <= (yday+1, hours) < (dayend, hourend):
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33 tzname = dstname
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34 hours = hours + 1
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35 return year, month, days, hours, mins, secs, yday, wday, tzname
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36
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37 def tzset():
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38 global tzparams, timezone, altzone, daylight, tzname
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39 import os
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40 tzstr = os.environ['TZ']
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41 tzparams = tzparse(tzstr)
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42 timezone = tzparams[1] * 3600
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b120cdd30fbc * Fix bug in tzparse.py for DST timezone
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43 altzone = timezone - 3600
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44 daylight = 1
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45 tzname = tzparams[0], tzparams[2]
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47 def isdst(secs):
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48 import time
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49 (tzname, delta, dstname, daystart, hourstart, dayend, hourend) = \
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50 tzparams
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51 year, month, days, hours, mins, secs, yday, wday, isdst = \
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52 time.gmtime(secs - delta*3600)
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53 return (daystart, hourstart) <= (yday+1, hours) < (dayend, hourend)
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54
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55 tzset()
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56
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57 def localtime(secs):
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58 return tzlocaltime(secs, tzparams)
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60 def test():
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61 from time import asctime, gmtime
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62 import time, sys
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63 now = time.time()
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64 x = localtime(now)
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65 tm = x[:-1] + (0,)
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66 print 'now =', now, '=', asctime(tm), x[-1]
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67 now = now - now % (24*3600)
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68 if sys.argv[1:]: now = now + eval(sys.argv[1])
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69 x = gmtime(now)
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70 tm = x[:-1] + (0,)
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71 print 'gmtime =', now, '=', asctime(tm), 'yday =', x[-2]
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72 jan1 = now - x[-2]*24*3600
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73 x = localtime(jan1)
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74 tm = x[:-1] + (0,)
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75 print 'jan1 =', jan1, '=', asctime(tm), x[-1]
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76 for d in range(85, 95) + range(265, 275):
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77 t = jan1 + d*24*3600
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78 x = localtime(t)
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79 tm = x[:-1] + (0,)
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80 print 'd =', d, 't =', t, '=', asctime(tm), x[-1]