cde/programs/dtksh/ksh93/src/lib/libast/tm/tmzone.c

   1 /*
   2  * CDE - Common Desktop Environment
   3  *
   4  * Copyright (c) 1993-2012, The Open Group. All rights reserved.
   5  *
   6  * These libraries and programs are free software; you can
   7  * redistribute them and/or modify them under the terms of the GNU
   8  * Lesser General Public License as published by the Free Software
   9  * Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * These libraries and programs are distributed in the hope that
  13  * they will be useful, but WITHOUT ANY WARRANTY; without even the
  14  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE. See the GNU Lesser General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with these librararies and programs; if not, write
  20  * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  21  * Floor, Boston, MA 02110-1301 USA
  22  */
  23 /* $XConsortium: tmzone.c /main/3 1995/11/01 18:56:32 rswiston $ */
  24 /***************************************************************
  25 *                                                              *
  26 *                      AT&T - PROPRIETARY                      *
  27 *                                                              *
  28 *         THIS IS PROPRIETARY SOURCE CODE LICENSED BY          *
  29 *                          AT&T CORP.                          *
  30 *                                                              *
  31 *                Copyright (c) 1995 AT&T Corp.                 *
  32 *                     All Rights Reserved                      *
  33 *                                                              *
  34 *           This software is licensed by AT&T Corp.            *
  35 *       under the terms and conditions of the license in       *
  36 *       http://www.research.att.com/orgs/ssr/book/reuse        *
  37 *                                                              *
  38 *               This software was created by the               *
  39 *           Software Engineering Research Department           *
  40 *                    AT&T Bell Laboratories                    *
  41 *                                                              *
  42 *               For further information contact                *
  43 *                     gsf@research.att.com                     *
  44 *                                                              *
  45 ***************************************************************/
  46
  47 /* : : generated by proto : : */
  48
  49 #if !defined(__PROTO__)
  50 #if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
  51 #if defined(__cplusplus)
  52 #define __MANGLE__      "C"
  53 #else
  54 #define __MANGLE__
  55 #endif
  56 #define __STDARG__
  57 #define __PROTO__(x)    x
  58 #define __OTORP__(x)
  59 #define __PARAM__(n,o)  n
  60 #if !defined(__STDC__) && !defined(__cplusplus)
  61 #if !defined(c_plusplus)
  62 #define const
  63 #endif
  64 #define signed
  65 #define void            int
  66 #define volatile
  67 #define __V_            char
  68 #else
  69 #define __V_            void
  70 #endif
  71 #else
  72 #define __PROTO__(x)    ()
  73 #define __OTORP__(x)    x
  74 #define __PARAM__(n,o)  o
  75 #define __MANGLE__
  76 #define __V_            char
  77 #define const
  78 #define signed
  79 #define void            int
  80 #define volatile
  81 #endif
  82 #if defined(__cplusplus) || defined(c_plusplus)
  83 #define __VARARG__      ...
  84 #else
  85 #define __VARARG__
  86 #endif
  87 #if defined(__STDARG__)
  88 #define __VA_START__(p,a)       va_start(p,a)
  89 #else
  90 #define __VA_START__(p,a)       va_start(p)
  91 #endif
  92 #endif
  93 #include <ast.h>
  94 #include <tm.h>
  95
  96 /*
  97  * return minutes west of GMT for timezone name and type
  98  *
  99  * if type==0 then all time zone types match
 100  * otherwise type must be one of tm_info.zone[].type
 101  *
 102  * if end is non-null then it will point to the next
 103  * unmatched char in name
 104  *
 105  * if dst!=0 then it will point to 0 for standard zones
 106  * and the offset for daylight zones
 107  *
 108  * 0 returned for no match
 109  */
 110
 111 Tm_zone_t*
 112 tmzone __PARAM__((register const char* name, char** end, const char* type, int* dst), (name, end, type, dst)) __OTORP__(register const char* name; char** end; const char* type; int* dst;){
 113         register Tm_zone_t*     zp;
 114         register char*          prev;
 115
 116         tmset(tm_info.zone);
 117         zp = tm_info.local;
 118         prev = 0;
 119         do
 120         {
 121                 if (zp->type) prev = zp->type;
 122                 if (!type || type == prev || !prev)
 123                 {
 124                         if (tmword(name, end, zp->standard, NiL, 0))
 125                         {
 126                                 if (dst) *dst = 0;
 127                                 return(zp);
 128                         }
 129                         if (zp->dst && zp->daylight && tmword(name, end, zp->daylight, NiL, 0))
 130                         {
 131                                 if (dst) *dst = zp->dst;
 132                                 return(zp);
 133                         }
 134                 }
 135                 if (zp == tm_info.local) zp = tm_data.zone;
 136                 else zp++;
 137         } while (zp->standard);
 138         return(0);
 139 }