Misc changes and new modules. whrandom is "objectified". SOCKET.py

is moved to the sgi subdirectory.

Lib/tzparse.py

@@ -0,0 +1,76 @@
+# Parse a timezone specification.
+# XXX Unfinished.
+# XXX Only the typical form "XXXhhYYY;ddd/hh,ddd/hh" is currently supported.
+
+tzpat = '^\([A-Z][A-Z][A-Z]\)\([-+]?[0-9]+\)\([A-Z][A-Z][A-Z]\);' + \
+	  '\([0-9]+\)/\([0-9]+\),\([0-9]+\)/\([0-9]+\)$'
+
+tzprog = None
+
+def tzparse(tzstr):
+	global tzprog
+	if tzprog == None:
+		import regex
+		tzprog = regex.compile(tzpat)
+	if not tzprog.match(tzstr):
+		raise ValueError, 'not the TZ syntax I understand'
+	regs = tzprog.regs
+	subs = []
+	for i in range(1, 8):
+		a, b = regs[i]
+		subs.append(tzstr[a:b])
+	for i in (1, 3, 4, 5, 6):
+		subs[i] = eval(subs[i])
+	[tzname, delta, dstname, daystart, hourstart, dayend, hourend] = subs
+	return (tzname, delta, dstname, daystart, hourstart, dayend, hourend)
+
+def tzlocaltime(time, params):
+	import calendar
+	(tzname, delta, dstname, daystart, hourstart, dayend, hourend) = params
+	year, month, days, hours, mins, secs, yday, wday = \
+		calendar.gmtime(time - delta*3600)
+	if (daystart, hourstart) <= (yday+1, hours) < (dayend, hourend):
+		tzname = dstname
+		hours = hours + 1
+	return year, month, days, hours, mins, secs, yday, wday, tzname
+
+def tzset():
+	global tzparams, timezone, altzone, daylight, tzname
+	import os
+	tzstr = os.environ['TZ']
+	tzparams = tzparse(tzstr)
+	timezone = tzparams[1] * 3600
+	altzone = timezone + 3600
+	daylight = 1
+	tzname = tzparams[0], tzparams[2]
+
+def isdst(time):
+	import calendar
+	(tzname, delta, dstname, daystart, hourstart, dayend, hourend) = \
+		tzparams
+	year, month, days, hours, mins, secs, yday, wday = \
+		calendar.gmtime(time - delta*3600)
+	return (daystart, hourstart) <= (yday+1, hours) < (dayend, hourend)
+
+tzset()
+
+def localtime(time):
+	return tzlocaltime(time, tzparams)
+
+def test():
+	from calendar import asctime, gmtime
+	import time, sys
+	now = time.time()
+	x = localtime(now)
+	print 'now =', now, '=', asctime(x[:-1]), x[-1]
+	now = now - now % (24*3600)
+	if sys.argv[1:]: now = now + eval(sys.argv[1])
+	x = gmtime(now)
+	print 'gmtime =', now, '=', asctime(x), 'yday =', x[-2]
+	jan1 = now - x[-2]*24*3600
+	x = localtime(jan1)
+	print 'jan1 =', jan1, '=', asctime(x[:-1]), x[-1]
+	for d in range(85, 95) + range(265, 275):
+		t = jan1 + d*24*3600
+		x = localtime(t)
+		print 'd =', d, 't =', t, '=', asctime(x[:-1]), x[-1]