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iso8601.c
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/*
* Copyright 2005-2019 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/crm.h>
#include <crm/common/iso8601.h>
#include <crm/common/util.h> /* CRM_ASSERT */
#include <unistd.h>
char command = 0;
/* *INDENT-OFF* */
static struct crm_option long_options[] = {
/* Top-level Options */
{"help", 0, 0, '?', "\tThis text"},
{"version", 0, 0, '$', "\tVersion information" },
{"verbose", 0, 0, 'V', "\tIncrease debug output"},
{"-spacer-", 0, 0, '-', "\nCommands:"},
{"now", 0, 0, 'n', "\tDisplay the current date/time"},
{ "date", 1, 0, 'd',
"Parse an ISO 8601 date/time (for example, '2019-09-24 00:30:00 +01:00' or '2019-040')"},
{ "period", 1, 0, 'p',
"Parse an ISO 8601 period (interval) with start time (for example, '2005-040/2005-043')"
},
{ "duration", 1, 0, 'D',
"Parse an ISO 8601 duration (for example, 'P1M')"
},
{ "expected", 1, 0, 'E',
"Exit with error status if result does not match this text. Requires: -n or -d"
},
{"-spacer-",0, 0, '-', "\nOutput Modifiers:"},
{"seconds", 0, 0, 's', "\tShow result as a seconds since 0000-001 00:00:00Z"},
{"epoch", 0, 0, 'S', "\tShow result as a seconds since EPOCH (1970-001 00:00:00Z)"},
{"local", 0, 0, 'L', "\tShow result as a 'local' date/time"},
{"ordinal", 0, 0, 'O', "\tShow result as an 'ordinal' date/time"},
{"week", 0, 0, 'W', "\tShow result as an 'calendar week' date/time"},
{ "-spacer-",0, 0, '-',
"\nFor more information on the ISO 8601 standard, see https://en.wikipedia.org/wiki/ISO_8601"
},
{0, 0, 0, 0}
};
/* *INDENT-ON* */
static void
log_time_period(int log_level, crm_time_period_t * dtp, int flags)
{
char *start = crm_time_as_string(dtp->start, flags);
char *end = crm_time_as_string(dtp->end, flags);
CRM_ASSERT(start != NULL && end != NULL);
if (log_level < LOG_CRIT) {
printf("Period: %s to %s\n", start, end);
} else {
do_crm_log(log_level, "Period: %s to %s", start, end);
}
free(start);
free(end);
}
int
main(int argc, char **argv)
{
crm_exit_t exit_code = CRM_EX_OK;
int argerr = 0;
int flag;
int index = 0;
int print_options = 0;
crm_time_t *duration = NULL;
crm_time_t *date_time = NULL;
const char *period_s = NULL;
const char *duration_s = NULL;
const char *date_time_s = NULL;
const char *expected_s = NULL;
crm_log_cli_init("iso8601");
crm_set_options(NULL, "command [output modifier] ", long_options,
"Display and parse ISO 8601 dates and times");
if (argc < 2) {
argerr++;
}
while (1) {
flag = crm_get_option(argc, argv, &index);
if (flag == -1)
break;
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case '?':
case '$':
crm_help(flag, CRM_EX_OK);
break;
case 'n':
date_time_s = "now";
break;
case 'd':
date_time_s = optarg;
break;
case 'p':
period_s = optarg;
break;
case 'D':
duration_s = optarg;
break;
case 'E':
expected_s = optarg;
break;
case 'S':
print_options |= crm_time_epoch;
break;
case 's':
print_options |= crm_time_seconds;
break;
case 'W':
print_options |= crm_time_weeks;
break;
case 'O':
print_options |= crm_time_ordinal;
break;
case 'L':
print_options |= crm_time_log_with_timezone;
break;
break;
}
}
if (safe_str_eq("now", date_time_s)) {
date_time = crm_time_new(NULL);
if (date_time == NULL) {
fprintf(stderr, "Internal error: couldn't determine 'now'!\n");
crm_exit(CRM_EX_SOFTWARE);
}
crm_time_log(LOG_TRACE, "Current date/time", date_time,
crm_time_ordinal | crm_time_log_date | crm_time_log_timeofday);
crm_time_log(-1, "Current date/time", date_time,
print_options | crm_time_log_date | crm_time_log_timeofday);
} else if (date_time_s) {
date_time = crm_time_new(date_time_s);
if (date_time == NULL) {
fprintf(stderr, "Invalid date/time specified: %s\n", date_time_s);
crm_exit(CRM_EX_INVALID_PARAM);
}
crm_time_log(LOG_TRACE, "Date", date_time,
crm_time_ordinal | crm_time_log_date | crm_time_log_timeofday);
crm_time_log(-1, "Date", date_time,
print_options | crm_time_log_date | crm_time_log_timeofday);
}
if (duration_s) {
duration = crm_time_parse_duration(duration_s);
if (duration == NULL) {
fprintf(stderr, "Invalid duration specified: %s\n", duration_s);
crm_exit(CRM_EX_INVALID_PARAM);
}
crm_time_log(LOG_TRACE, "Duration", duration, crm_time_log_duration);
crm_time_log(-1, "Duration", duration, print_options | crm_time_log_duration);
}
if (period_s) {
crm_time_period_t *period = crm_time_parse_period(period_s);
if (period == NULL) {
fprintf(stderr, "Invalid interval specified: %s\n", period_s);
crm_exit(CRM_EX_INVALID_PARAM);
}
log_time_period(LOG_TRACE, period,
print_options | crm_time_log_date | crm_time_log_timeofday);
log_time_period(-1, period,
print_options | crm_time_log_date | crm_time_log_timeofday);
crm_time_free_period(period);
}
if (date_time && duration) {
crm_time_t *later = crm_time_add(date_time, duration);
if (later == NULL) {
fprintf(stderr, "Unable to calculate ending time of %s plus %s",
date_time_s, duration_s);
crm_exit(CRM_EX_SOFTWARE);
}
crm_time_log(LOG_TRACE, "Duration ends at", later,
crm_time_ordinal | crm_time_log_date | crm_time_log_timeofday);
crm_time_log(-1, "Duration ends at", later,
print_options | crm_time_log_date | crm_time_log_timeofday |
crm_time_log_with_timezone);
if (expected_s) {
char *dt_s = crm_time_as_string(later,
print_options | crm_time_log_date |
crm_time_log_timeofday);
if (safe_str_neq(expected_s, dt_s)) {
exit_code = CRM_EX_ERROR;
}
free(dt_s);
}
crm_time_free(later);
} else if (date_time && expected_s) {
char *dt_s = crm_time_as_string(date_time,
print_options | crm_time_log_date | crm_time_log_timeofday);
if (safe_str_neq(expected_s, dt_s)) {
exit_code = CRM_EX_ERROR;
}
free(dt_s);
}
crm_time_free(date_time);
crm_time_free(duration);
crm_exit(exit_code);
}

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