1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Research
*
* time conversion support
*/
#include <ast.h>
#include <tm.h>
/*
* return timezone pointer given name and type
*
* if type==0 then all time zone types match
* otherwise type must be one of tm_info.zone[].type
*
* if end is non-null then it will point to the next
* unmatched char in name
*
* if dst!=0 then it will point to 0 for standard zones
* and the offset for daylight zones
*
* 0 returned for no match
*/
Tm_zone_t*
tmzone(register const char* name, char** end, const char* type, int* dst)
{
register Tm_zone_t* zp;
register char* prev;
char* e;
static Tm_zone_t fixed;
static char off[16];
tmset(tm_info.zone);
if ((*name == '+' || *name == '-') && (fixed.west = tmgoff(name, &e, TM_LOCALZONE)) != TM_LOCALZONE && !*e)
{
fixed.standard = fixed.daylight = strncpy(off, name, sizeof(off) - 1);
if (end)
*end = e;
if (dst)
*dst = 0;
return &fixed;
}
zp = tm_info.local;
prev = 0;
do
{
if (zp->type)
prev = zp->type;
if (!type || type == prev || !prev)
{
if (tmword(name, end, zp->standard, NiL, 0))
{
if (dst)
*dst = 0;
return zp;
}
if (zp->dst && zp->daylight && tmword(name, end, zp->daylight, NiL, 0))
{
if (dst)
*dst = zp->dst;
return zp;
}
}
if (zp == tm_info.local)
zp = tm_data.zone;
else
zp++;
} while (zp->standard);
return 0;
}
|
