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 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 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