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- /*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 2021, Sangoma Technologies Corporation
- *
- * See http://www.asterisk.org for more information about
- * the Asterisk project. Please do not directly contact
- * any of the maintainers of this project for assistance;
- * the project provides a web site, mailing lists and IRC
- * channels for your use.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
- /*! \file
- *
- * \brief Date/Time utility functions
- */
- /*** MODULEINFO
- <support_level>core</support_level>
- ***/
- #include <inttypes.h>
- #include <string.h>
- #include <strings.h>
- #include <time.h>
- #include "asterisk/time.h"
- const char *nanosecond_labels[] = {"ns", "nsec", "nanosecond"};
- const char *microsecond_labels[] = {"us", "usec", "microsecond"};
- const char *millisecond_labels[] = {"ms", "msec", "millisecond"};
- const char *second_labels[] = {"s", "sec", "second"};
- const char *minute_labels[] = {"m", "min", "minute"};
- const char *hour_labels[] = {"h", "hr", "hour"};
- const char *day_labels[] = {"d", "", "day"};
- const char *week_labels[] = {"w", "wk", "week"};
- const char *month_labels[] = {"mo", "mth", "month"};
- const char *year_labels[] = {"y", "yr", "year"};
- #define MAX_UNIT_LABELS 3
- struct time_unit_labels {
- enum TIME_UNIT unit;
- const char **values;
- };
- static struct time_unit_labels unit_labels[] = {
- { TIME_UNIT_NANOSECOND, nanosecond_labels },
- { TIME_UNIT_MICROSECOND, microsecond_labels },
- { TIME_UNIT_MILLISECOND, millisecond_labels },
- { TIME_UNIT_MONTH, month_labels }, /* Here so "mo" matches before "m" */
- { TIME_UNIT_SECOND, second_labels },
- { TIME_UNIT_MINUTE, minute_labels },
- { TIME_UNIT_HOUR, hour_labels },
- { TIME_UNIT_DAY, day_labels },
- { TIME_UNIT_WEEK, week_labels },
- { TIME_UNIT_YEAR, year_labels },
- };
- const unsigned int unit_labels_size = sizeof(unit_labels) / sizeof(0[unit_labels]);
- enum TIME_UNIT ast_time_str_to_unit(const char *unit)
- {
- size_t i, j;
- if (!unit) {
- return TIME_UNIT_ERROR;
- }
- for (i = 0; i < unit_labels_size; ++i) {
- for (j = 0; j < MAX_UNIT_LABELS; ++j) {
- /*
- * A lazy pluralization check. If the given unit string at least starts
- * with a label assume a match.
- */
- if (*unit_labels[i].values[j] && !strncasecmp(unit, unit_labels[i].values[j],
- strlen(unit_labels[i].values[j]))) {
- return unit_labels[i].unit;
- }
- }
- }
- return TIME_UNIT_ERROR;
- }
- ast_suseconds_t ast_time_tv_to_usec(const struct timeval *tv)
- {
- return tv->tv_sec * 1000000 + tv->tv_usec;
- }
- struct timeval ast_time_create(ast_time_t sec, ast_suseconds_t usec)
- {
- return ast_tv(sec, usec);
- }
- /*!
- * \brief Create a timeval first converting the given microsecond value
- * into seconds and microseconds
- *
- * \param usec microsecond value
- *
- * \return A timeval structure
- */
- static struct timeval normalize_and_create(unsigned long usec)
- {
- return ast_time_create(usec / 1000000, usec % 1000000);
- }
- struct timeval ast_time_create_by_unit(unsigned long val, enum TIME_UNIT unit)
- {
- switch (unit) {
- case TIME_UNIT_NANOSECOND:
- return normalize_and_create(val / 1000);
- case TIME_UNIT_MICROSECOND:
- return normalize_and_create(val);
- case TIME_UNIT_MILLISECOND:
- return normalize_and_create(val * 1000);
- case TIME_UNIT_SECOND:
- return ast_time_create(val, 0);
- case TIME_UNIT_MINUTE:
- return ast_time_create(val * 60, 0);
- case TIME_UNIT_HOUR:
- return ast_time_create(val * 3600, 0);
- case TIME_UNIT_DAY:
- return ast_time_create(val * 86400, 0);
- case TIME_UNIT_WEEK:
- return ast_time_create(val * 604800, 0);
- case TIME_UNIT_MONTH:
- /* Using Gregorian mean month - 30.436875 * 86400 */
- return ast_time_create(val * 2629746, 0);
- case TIME_UNIT_YEAR:
- /* Using Gregorian year - 365.2425 * 86400 */
- return ast_time_create(val * 31556952, 0);
- default:
- return ast_time_create(0, 0);
- }
- }
- struct timeval ast_time_create_by_unit_str(unsigned long val, const char *unit)
- {
- return ast_time_create_by_unit(val, ast_time_str_to_unit(unit));
- }
- /*!
- * \brief Returns a string representation of a time_t as decimal seconds
- * since the epoch.
- */
- int ast_time_t_to_string(time_t time, char *buf, size_t length)
- {
- struct tm tm;
- localtime_r(&time, &tm);
- return (strftime(buf, length, "%s", &tm) == 0) ? -1 : 0;
- }
- /*!
- * \brief Returns a time_t from a string containing seconds since the epoch.
- */
- time_t ast_string_to_time_t(const char *str)
- {
- struct tm tm = { 0, };
- /* handle leading spaces */
- if (strptime(str, " %s", &tm) == NULL) {
- return (time_t)-1;
- }
- tm.tm_isdst = -1;
- return mktime(&tm);
- }
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