iso8601.c
No OneTemporary
Actions

Size

9 KB

Referenced Files

None

Subscribers

None

iso8601.c
View Options

	/*
	* Copyright 2005-2022 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/cmdline_internal.h>
	#include <crm/common/iso8601.h>
	#include <crm/common/util.h> /* CRM_ASSERT */
	#include <unistd.h>

	#define SUMMARY "Display and parse ISO 8601 dates and times"

	struct {
	char *date_time_s;
	gchar *duration_s;
	gchar *expected_s;
	gchar *period_s;
	int print_options;
	} options;

	#define INDENT " "

	static gboolean
	date_now_cb(const gchar option_name, const gchar optarg, gpointer data, GError **error) {
	if (pcmk__str_any_of(option_name, "--now", "-n", NULL)) {
	pcmk__str_update(&options.date_time_s, "now");
	} else if (pcmk__str_any_of(option_name, "--date", "-d", NULL)) {
	pcmk__str_update(&options.date_time_s, optarg);
	}

	return TRUE;
	}

	static gboolean
	modifier_cb(const gchar option_name, const gchar optarg, gpointer data, GError **error) {
	if (pcmk__str_any_of(option_name, "--seconds", "-s", NULL)) {
	options.print_options \|= crm_time_seconds;
	} else if (pcmk__str_any_of(option_name, "--epoch", "-S", NULL)) {
	options.print_options \|= crm_time_epoch;
	} else if (pcmk__str_any_of(option_name, "--local", "-L", NULL)) {
	options.print_options \|= crm_time_log_with_timezone;
	} else if (pcmk__str_any_of(option_name, "--ordinal", "-O", NULL)) {
	options.print_options \|= crm_time_ordinal;
	} else if (pcmk__str_any_of(option_name, "--week", "-W", NULL)) {
	options.print_options \|= crm_time_weeks;
	}

	return TRUE;
	}

	static GOptionEntry command_entries[] = {
	{ "now", 'n', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, date_now_cb,
	"Display the current date/time",
	NULL },

	{ "date", 'd', 0, G_OPTION_ARG_CALLBACK, date_now_cb,
	"Parse an ISO 8601 date/time (for example,\n"
	INDENT "'2019-09-24 00:30:00 +01:00' or '2019-040')",
	"DATE" },

	{ "period", 'p', 0, G_OPTION_ARG_STRING, &options.period_s,
	"Parse an ISO 8601 period (interval) with start time (for example,\n"
	INDENT "'2005-040/2005-043')",
	"PERIOD" },

	{ "duration", 'D', 0, G_OPTION_ARG_STRING, &options.duration_s,
	"Parse an ISO 8601 duration (for example, 'P1M')",
	"DURATION" },

	{ "expected", 'E', 0, G_OPTION_ARG_STRING, &options.expected_s,
	"Exit with error status if result does not match this text.\n"
	INDENT "Requires: -n or -d",
	"TEXT" },

	{ NULL }
	};

	static GOptionEntry modifier_entries[] = {
	{ "seconds", 's', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, modifier_cb,
	"Show result as a seconds since 0000-001 00:00:00Z",
	NULL },

	{ "epoch", 'S', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, modifier_cb,
	"Show result as a seconds since EPOCH (1970-001 00:00:00Z)",
	NULL },

	{ "local", 'L', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, modifier_cb,
	"Show result as a 'local' date/time",
	NULL },

	{ "ordinal", 'O', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, modifier_cb,
	"Show result as an 'ordinal' date/time",
	NULL },

	{ "week", 'W', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, modifier_cb,
	"Show result as an 'calendar week' date/time",
	NULL },

	{ NULL }
	};

	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);
	do_crm_log(log_level, "Period: %s to %s", start, end);
	free(start);
	free(end);
	}

	static GOptionContext *
	build_arg_context(pcmk__common_args_t *args) {
	GOptionContext *context = NULL;

	const char *description = "For more information on the ISO 8601 standard, see " \
	"https://en.wikipedia.org/wiki/ISO_8601";

	context = pcmk__build_arg_context(args, NULL, NULL, NULL);
	g_option_context_set_description(context, description);

	pcmk__add_arg_group(context, "commands", "Commands:",
	"Show command options", command_entries);
	pcmk__add_arg_group(context, "modifiers", "Output modifiers:",
	"Show output modifiers", modifier_entries);

	return context;
	}

	int
	main(int argc, char **argv)
	{
	crm_exit_t exit_code = CRM_EX_OK;
	crm_time_t *duration = NULL;
	crm_time_t *date_time = NULL;

	GError *error = NULL;

	pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
	GOptionContext *context = build_arg_context(args);
	gchar **processed_args = pcmk__cmdline_preproc(argv, "dpDE");

	if (!g_option_context_parse_strv(context, &processed_args, &error)) {
	exit_code = CRM_EX_USAGE;
	goto done;
	}

	pcmk__cli_init_logging("iso8601", args->verbosity);

	if (args->version) {
	g_strfreev(processed_args);
	pcmk__free_arg_context(context);
	/* FIXME: When iso8601 is converted to use formatted output, this can go. */
	pcmk__cli_help('v', CRM_EX_OK);
	}

	if (pcmk__str_eq("now", options.date_time_s, pcmk__str_casei)) {
	date_time = crm_time_new(NULL);

	if (date_time == NULL) {
	exit_code = CRM_EX_SOFTWARE;
	g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
	"Internal error: couldn't determine 'now'!");
	goto done;
	}

	crm_time_log(LOG_TRACE, "Current date/time", date_time,
	crm_time_ordinal \| crm_time_log_date \| crm_time_log_timeofday);
	crm_time_log(LOG_STDOUT, "Current date/time", date_time,
	options.print_options \| crm_time_log_date \| crm_time_log_timeofday);

	} else if (options.date_time_s) {
	date_time = crm_time_new(options.date_time_s);

	if (date_time == NULL) {
	exit_code = CRM_EX_INVALID_PARAM;
	g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
	"Invalid date/time specified: %s", options.date_time_s);
	goto done;
	}

	crm_time_log(LOG_TRACE, "Date", date_time,
	crm_time_ordinal \| crm_time_log_date \| crm_time_log_timeofday);
	crm_time_log(LOG_STDOUT, "Date", date_time,
	options.print_options \| crm_time_log_date \| crm_time_log_timeofday);
	}

	if (options.duration_s) {
	duration = crm_time_parse_duration(options.duration_s);

	if (duration == NULL) {
	exit_code = CRM_EX_INVALID_PARAM;
	g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
	"Invalid duration specified: %s", options.duration_s);
	goto done;
	}

	crm_time_log(LOG_TRACE, "Duration", duration, crm_time_log_duration);
	crm_time_log(LOG_STDOUT, "Duration", duration,
	options.print_options \| crm_time_log_duration);
	}

	if (options.period_s) {
	crm_time_period_t *period = crm_time_parse_period(options.period_s);

	if (period == NULL) {
	exit_code = CRM_EX_INVALID_PARAM;
	g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
	"Invalid interval specified: %s", options.period_s);
	goto done;
	}

	log_time_period(LOG_TRACE, period,
	options.print_options \| crm_time_log_date \| crm_time_log_timeofday);
	log_time_period(LOG_STDOUT, period,
	options.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) {
	exit_code = CRM_EX_SOFTWARE;
	g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
	"Unable to calculate ending time of %s plus %s",
	options.date_time_s, options.duration_s);
	goto done;
	}

	crm_time_log(LOG_TRACE, "Duration ends at", later,
	crm_time_ordinal \| crm_time_log_date \| crm_time_log_timeofday);
	crm_time_log(LOG_STDOUT, "Duration ends at", later,
	options.print_options \| crm_time_log_date \| crm_time_log_timeofday \|
	crm_time_log_with_timezone);

	if (options.expected_s) {
	char *dt_s = crm_time_as_string(later,
	options.print_options \| crm_time_log_date \|
	crm_time_log_timeofday);
	if (!pcmk__str_eq(options.expected_s, dt_s, pcmk__str_casei)) {
	exit_code = CRM_EX_ERROR;
	goto done;
	}
	free(dt_s);
	}
	crm_time_free(later);

	} else if (date_time && options.expected_s) {
	char *dt_s = crm_time_as_string(date_time,
	options.print_options \| crm_time_log_date \| crm_time_log_timeofday);

	if (!pcmk__str_eq(options.expected_s, dt_s, pcmk__str_casei)) {
	exit_code = CRM_EX_ERROR;
	goto done;
	}
	free(dt_s);
	}

	done:
	crm_time_free(date_time);
	crm_time_free(duration);

	g_strfreev(processed_args);
	pcmk__free_arg_context(context);

	free(options.date_time_s);
	g_free(options.duration_s);
	g_free(options.expected_s);
	g_free(options.period_s);

	pcmk__output_and_clear_error(error, NULL);
	crm_exit(exit_code);
	}

File Metadata

Mime Type: text/x-c
Expires: Sat, Jan 25, 11:59 AM (1 d, 20 h)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 1322476
Default Alt Text: iso8601.c (9 KB)

iso8601.cNo OneTemporaryActions

iso8601.cView Options

File Metadata

Event Timeline

iso8601.c
No OneTemporary
Actions

iso8601.c
View Options