diff options
Diffstat (limited to 'tools/iso8601.c')
| -rw-r--r-- | tools/iso8601.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/tools/iso8601.c b/tools/iso8601.c new file mode 100644 index 0000000..e53bca0 --- /dev/null +++ b/tools/iso8601.c @@ -0,0 +1,282 @@ +/* + * Copyright 2005-2023 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'); + } + + 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); +} |