mirror of
https://github.com/gnustep/libs-base.git
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538f642fd1
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@5503 72102866-910b-0410-8b05-ffd578937521
92 lines
2.5 KiB
Objective-C
92 lines
2.5 KiB
Objective-C
/* create-regions.m - Utility to create a list of time zones and their
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associated latitudinal region.
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Copyright (C) 1997 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <Foundation/NSArray.h>
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#include <Foundation/NSAutoreleasePool.h>
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#include <Foundation/NSException.h>
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#include <Foundation/NSDate.h>
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#include <Foundation/NSUtilities.h>
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#define HOURSECS (60*60) /* Seconds in 1 hour. */
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#define DAYSECS (HOURSECS*24) /* Seconds in 24 hours. */
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#define N (360/15) /* Each latitudinal region is separated by 15 degrees */
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int
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main (int argc, char *argv[])
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{
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int i;
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id pool, name, zone;
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id zones[N];
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pool = [NSAutoreleasePool new];
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for (i = 0; i < N; i++)
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zones[i] = nil;
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/* Obtain the regions for each latitudinal region. */
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for (i = 1; i < argc; i++)
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{
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name = [NSString stringWithCString: argv[i]];
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zone = [NSTimeZone timeZoneWithName: name];
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if (zone != nil)
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{
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int offset, index;
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id details, detail, e;
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details = [zone timeZoneDetailArray];
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/* Get a standard time. */
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e = [details objectEnumerator];
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while ((detail = [e nextObject]) != nil)
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{
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if (![detail isDaylightSavingTimeZone])
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break;
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}
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if (detail == nil)
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/* If no standard time. */
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detail = [details objectAtIndex: 0];
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offset = [detail timeZoneSecondsFromGMT];
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/* Get index from normalized offset */
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index = ((offset+DAYSECS)%DAYSECS)/HOURSECS;
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if (zones[index] == nil)
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zones[index] = [NSMutableArray array];
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[zones[index] addObject: [zone timeZoneName]];
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}
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}
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/* Write regions to file. */
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for (i = 0; i < N; i++)
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{
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id e, name;
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if (zones[i] != nil)
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{
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e = [zones[i] objectEnumerator];
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while ((name = [e nextObject]) != nil)
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printf("%d %@\n", i, name);
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}
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}
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[pool release];
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return 0;
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}
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