1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2010 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Common Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.opensource.org/licenses/cpl1.0.txt *
11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24 * Glenn Fowler
25 * AT&T Bell Laboratories
26 *
27 * time conversion support
28 */
29
30 #include <ast.h>
31 #include <tm.h>
32
33 /*
34 * n is minutes west of UTC
35 *
36 * append p and SHHMM part of n to s
37 * where S is + or -
38 *
39 * n ignored if n==d
40 * end of s is returned
41 */
42
43 char*
tmpoff(register char * s,size_t z,register const char * p,register int n,int d)44 tmpoff(register char* s, size_t z, register const char* p, register int n, int d)
45 {
46 register char* e = s + z;
47
48 while (s < e && (*s = *p++))
49 s++;
50 if (n != d && s < e)
51 {
52 if (n < 0)
53 {
54 n = -n;
55 *s++ = '+';
56 }
57 else
58 *s++ = '-';
59 s += sfsprintf(s, e - s, "%02d%02d", n / 60, n % 60);
60 }
61 return s;
62 }
63