1
2 /**
3 * \file time.c
4 *
5 * @addtogroup autoopts
6 * @{
7 */
8 /*
9 * This file is part of AutoOpts, a companion to AutoGen.
10 * AutoOpts is free software.
11 * AutoOpts is Copyright (C) 1992-2018 by Bruce Korb - all rights reserved
12 *
13 * AutoOpts is available under any one of two licenses. The license
14 * in use must be one of these two and the choice is under the control
15 * of the user of the license.
16 *
17 * The GNU Lesser General Public License, version 3 or later
18 * See the files "COPYING.lgplv3" and "COPYING.gplv3"
19 *
20 * The Modified Berkeley Software Distribution License
21 * See the file "COPYING.mbsd"
22 *
23 * These files have the following sha256 sums:
24 *
25 * 8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95 COPYING.gplv3
26 * 4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b COPYING.lgplv3
27 * 13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239 COPYING.mbsd
28 */
29
30 /*=export_func optionTimeVal
31 * private:
32 *
33 * what: process an option with a time duration.
34 * arg: + tOptions * + opts + program options descriptor +
35 * arg: + tOptDesc * + od + the descriptor for this arg +
36 *
37 * doc:
38 * Decipher a time duration value.
39 =*/
40 void
optionTimeVal(tOptions * opts,tOptDesc * od)41 optionTimeVal(tOptions * opts, tOptDesc * od)
42 {
43 time_t val;
44
45 if (INQUERY_CALL(opts, od))
46 return;
47
48 val = parse_duration(od->optArg.argString);
49 if (val == BAD_TIME) {
50 fprintf(stderr, zNotDuration, opts->pzProgName, od->optArg.argString);
51 if ((opts->fOptSet & OPTPROC_ERRSTOP) != 0)
52 (*(opts->pUsageProc))(opts, EXIT_FAILURE);
53 }
54
55 if (od->fOptState & OPTST_ALLOC_ARG) {
56 AGFREE(od->optArg.argString);
57 od->fOptState &= ~OPTST_ALLOC_ARG;
58 }
59
60 od->optArg.argInt = (long)val;
61 }
62
63 /*=export_func optionTimeDate
64 * private:
65 *
66 * what: process an option with a time and date.
67 * arg: + tOptions * + opts + program options descriptor +
68 * arg: + tOptDesc * + od + the descriptor for this arg +
69 *
70 * doc:
71 * Decipher a time and date value.
72 =*/
73 void
optionTimeDate(tOptions * opts,tOptDesc * od)74 optionTimeDate(tOptions * opts, tOptDesc * od)
75 {
76 #if defined(HAVE_GETDATE_R) && defined(HAVE_PUTENV)
77 if (INQUERY_CALL(opts, od))
78 return;
79
80 if ((! HAS_pzPkgDataDir(opts)) || (opts->pzPkgDataDir == NULL))
81 goto default_action;
82
83 /*
84 * Export the DATEMSK environment variable. getdate_r() uses it to
85 * find the file with the strptime formats. If we cannot find the file
86 * we need ($PKGDATADIR/datemsk), then fall back to just a time duration.
87 */
88 {
89 static char * envptr = NULL;
90
91 if (envptr == NULL) {
92 static char const fmt[] = "DATEMSK=%s/datemsk";
93 size_t sz = sizeof(fmt) + strlen(opts->pzPkgDataDir);
94 envptr = AGALOC(sz, fmt);
95 if (snprintf(envptr, sz, fmt, opts->pzPkgDataDir) >= (int)sz)
96 option_exits(EXIT_FAILURE);
97
98 putenv(envptr);
99 }
100
101 if (access(envptr+8, R_OK) != 0)
102 goto default_action;
103 }
104
105 /*
106 * Convert the date to a time since the epoch and stash it in a long int.
107 */
108 {
109 struct tm stm;
110 time_t tm;
111
112 if (getdate_r(od->optArg.argString, &stm) != 0) {
113 fprintf(stderr, zNotDate, opts->pzProgName,
114 od->optArg.argString);
115 if ((opts->fOptSet & OPTPROC_ERRSTOP) != 0)
116 (*(opts->pUsageProc))(opts, EXIT_FAILURE);
117 return;
118 }
119
120 tm = mktime(&stm);
121
122 if (od->fOptState & OPTST_ALLOC_ARG) {
123 AGFREE(od->optArg.argString);
124 od->fOptState &= ~OPTST_ALLOC_ARG;
125 }
126
127 od->optArg.argInt = tm;
128 }
129 return;
130
131 default_action:
132
133 #endif
134 optionTimeVal(opts, od);
135 if (od->optArg.argInt != BAD_TIME)
136 od->optArg.argInt += (long)time(NULL);
137 }
138 /** @}
139 *
140 * Local Variables:
141 * mode: C
142 * c-file-style: "stroustrup"
143 * indent-tabs-mode: nil
144 * End:
145 * end of autoopts/time.c */
146