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
|
/***********************************************************************
* *
* 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
#include <tmx.h>
#include <ctype.h>
/*
* parse duration expression in s and return Time_t value
* if non-null, e points to the first unused char in s
* returns 0 with *e==s on error
*/
Time_t
tmxduration(const char* s, char** e)
{
double d;
Time_t ns;
Time_t ts;
Time_t now;
char* last;
char* t;
char* x;
Sfio_t* f;
int i;
now = TMX_NOW;
while (isspace(*s))
s++;
if (*s == 'P' || *s == 'p')
ns = tmxdate(s, &last, now) - now;
else
{
ns = strtod(s, &last) * TMX_RESOLUTION;
if (*last && (f = sfstropen()))
{
sfprintf(f, "exact %s", s);
t = sfstruse(f);
ts = tmxdate(t, &x, now);
if ((i = x - t - 6) > (last - s))
{
last = (char*)s + i;
ns = ts - now;
}
else
{
sfprintf(f, "p%s", s);
t = sfstruse(f);
ts = tmxdate(t, &x, now);
if ((i = x - t - 1) > (last - s))
{
last = (char*)s + i;
ns = ts - now;
}
}
sfstrclose(f);
}
}
if (e)
*e = last;
return ns;
}
|
