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# -*- Mode: python -*-
#
# Copyright (C) 2000-2002 The ViewCVS Group. All Rights Reserved.
#
# By using this file, you agree to the terms and conditions set forth in
# the LICENSE.html file which can be found at the top level of the ViewCVS
# distribution or at http://viewcvs.sourceforge.net/license-1.html.
#
# Contact information:
# Greg Stein, PO Box 760, Palo Alto, CA, 94302
# gstein@lyra.org, http://viewcvs.sourceforge.net/
#
# -----------------------------------------------------------------------
#
# compat.py: compatibility functions for operation across Python 1.5.x to 2.2.x
#
# -----------------------------------------------------------------------
#
import urllib
import string
import time
import calendar
import re
import os
#
# urllib.urlencode() is new to Python 1.5.2
#
try:
urlencode = urllib.urlencode
except AttributeError:
def urlencode(dict):
"Encode a dictionary as application/x-url-form-encoded."
if not dict:
return ''
quote = urllib.quote_plus
keyvalue = [ ]
for key, value in dict.items():
keyvalue.append(quote(key) + '=' + quote(str(value)))
return string.join(keyvalue, '&')
#
# time.strptime() is new to Python 1.5.2
#
if hasattr(time, 'strptime'):
def cvs_strptime(timestr):
'Parse a CVS-style date/time value.'
return time.strptime(timestr, '%Y/%m/%d %H:%M:%S')[:-1] + (0,)
else:
_re_rev_date = re.compile('([0-9]{4})/([0-9][0-9])/([0-9][0-9]) '
'([0-9][0-9]):([0-9][0-9]):([0-9][0-9])')
def cvs_strptime(timestr):
'Parse a CVS-style date/time value.'
match = _re_rev_date.match(timestr)
if match:
return tuple(map(int, match.groups())) + (0, 1, 0)
else:
raise ValueError('date is not in cvs format')
#
# os.makedirs() is new to Python 1.5.2
#
try:
makedirs = os.makedirs
except AttributeError:
def makedirs(path, mode=0777):
head, tail = os.path.split(path)
if head and tail and not os.path.exists(head):
makedirs(head, mode)
os.mkdir(path, mode)
#
# calendar.timegm() is new to Python 2.x and
# calendar.leapdays() was wrong in Python 1.5.2
#
try:
timegm = calendar.timegm
except AttributeError:
def leapdays(year1, year2):
"""Return number of leap years in range [year1, year2).
Assume year1 <= year2."""
year1 = year1 - 1
year2 = year2 - 1
return (year2/4 - year1/4) - (year2/100 -
year1/100) + (year2/400 - year1/400)
EPOCH = 1970
def timegm(tuple):
"""Unrelated but handy function to calculate Unix timestamp from GMT."""
year, month, day, hour, minute, second = tuple[:6]
# assert year >= EPOCH
# assert 1 <= month <= 12
days = 365*(year-EPOCH) + leapdays(EPOCH, year)
for i in range(1, month):
days = days + calendar.mdays[i]
if month > 2 and calendar.isleap(year):
days = days + 1
days = days + day - 1
hours = days*24 + hour
minutes = hours*60 + minute
seconds = minutes*60 + second
return seconds
#
# the following stuff is *ONLY* needed for standalone.py.
# For that reason I've encapsulated it into a function.
#
def for_standalone():
import SocketServer
if not hasattr(SocketServer.TCPServer, "close_request"):
#
# method close_request() was missing until Python 2.1
#
class TCPServer(SocketServer.TCPServer):
def process_request(self, request, client_address):
"""Call finish_request.
Overridden by ForkingMixIn and ThreadingMixIn.
"""
self.finish_request(request, client_address)
self.close_request(request)
def close_request(self, request):
"""Called to clean up an individual request."""
request.close()
SocketServer.TCPServer = TCPServer
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