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Diffstat (limited to 'e-util/e-time-utils.c')
| -rw-r--r-- | e-util/e-time-utils.c | 479 |
1 files changed, 0 insertions, 479 deletions
diff --git a/e-util/e-time-utils.c b/e-util/e-time-utils.c deleted file mode 100644 index 43dc249efd..0000000000 --- a/e-util/e-time-utils.c +++ /dev/null @@ -1,479 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * Time utility functions - * - * Author: - * Damon Chaplin (damon@ximian.com) - * - * (C) 2001 Ximian, Inc. - */ - -#include <config.h> - -#ifdef __linux__ -/* We need this to get a prototype for strptime. */ -#define _GNU_SOURCE -#endif /* __linux__ */ - -#include <time.h> -#include <sys/time.h> - -#ifdef __linux__ -#undef _GNU_SOURCE -#endif /* __linux__ */ - -#include <string.h> -#include <ctype.h> -#include <glib.h> -#include <libgnome/gnome-i18n.h> -#include <gal/util/e-util.h> -#include "e-time-utils.h" - - -/* Returns whether a string is NULL, empty, or full of whitespace */ -static gboolean -string_is_empty (const char *value) -{ - const char *p; - gboolean empty = TRUE; - - if (value) { - p = value; - while (*p) { - if (!isspace (*p)) { - empty = FALSE; - break; - } - p++; - } - } - return empty; -} - - -/* Takes a number of format strings for strptime() and attempts to parse a - * string with them. - */ -static ETimeParseStatus -parse_with_strptime (const char *value, struct tm *result, const char **formats, int n_formats) -{ - const char *parse_end = NULL, *pos; - gboolean parsed = FALSE; - int i; - - if (string_is_empty (value)) { - memset (result, 0, sizeof (*result)); - result->tm_isdst = -1; - return E_TIME_PARSE_NONE; - } - - pos = value; - - /* Skip whitespace */ - while (isspace (*pos)) - pos++; - - /* Try each of the formats in turn */ - - for (i = 0; i < n_formats; i++) { - memset (result, 0, sizeof (*result)); - parse_end = strptime (pos, formats[i], result); - if (parse_end) { - parsed = TRUE; - break; - } - } - - result->tm_isdst = -1; - - /* If we parsed something, make sure we parsed the entire string. */ - if (parsed) { - /* Skip whitespace */ - while (isspace (*parse_end)) - parse_end++; - - if (*parse_end == '\0') - return E_TIME_PARSE_OK; - } - - return E_TIME_PARSE_INVALID; -} - - -/* Returns TRUE if the locale has 'am' and 'pm' strings defined, in which - case the user can choose between 12 and 24-hour time formats. */ -static gboolean -locale_supports_12_hour_format (void) -{ - struct tm tmp_tm = { 0 }; - char s[16]; - - e_utf8_strftime (s, sizeof (s), "%p", &tmp_tm); - return s[0] != '\0'; -} - - -/* - * Parses a string containing a date and a time. The date is expected to be - * in a format something like "Wed 3/13/00 14:20:00", though we use gettext - * to support the appropriate local formats and we try to accept slightly - * different formats, e.g. the weekday can be skipped and we can accept 12-hour - * formats with an am/pm string. - * - * Returns E_TIME_PARSE_OK if it could not be parsed, E_TIME_PARSE_NONE if it - * was empty, or E_TIME_PARSE_INVALID if it couldn't be parsed. - */ -ETimeParseStatus -e_time_parse_date_and_time (const char *value, - struct tm *result) -{ - struct tm *today_tm; - time_t t; - const char *format[16]; - int num_formats = 0; - gboolean use_12_hour_formats = locale_supports_12_hour_format (); - ETimeParseStatus status; - - if (string_is_empty (value)) { - memset (result, 0, sizeof (*result)); - result->tm_isdst = -1; - return E_TIME_PARSE_NONE; - } - - /* We'll parse the whole date and time in one go, otherwise we get - into i18n problems. We attempt to parse with several formats, - longest first. Note that we only use the '%p' specifier if the - locale actually has 'am' and 'pm' strings defined, otherwise we - will get incorrect results. Note also that we try to use exactly - the same strings as in e_time_format_date_and_time(), to try to - avoid i18n problems. We also use cut-down versions, so users don't - have to type in the weekday or the seconds, for example. - Note that all these formats include the full date, and the time - will be set to 00:00:00 before parsing, so we don't need to worry - about filling in any missing fields after parsing. */ - - /* - * Try the full times, with the weekday. Then try without seconds, - * and without minutes, and finally with no time at all. - */ - if (use_12_hour_formats) { - /* strptime format of a weekday, a date and a time, - in 12-hour format. */ - format[num_formats++] = _("%a %m/%d/%Y %I:%M:%S %p"); - } - - /* strptime format of a weekday, a date and a time, - in 24-hour format. */ - format[num_formats++] = _("%a %m/%d/%Y %H:%M:%S"); - - if (use_12_hour_formats) { - /* strptime format of a weekday, a date and a time, - in 12-hour format, without seconds. */ - format[num_formats++] = _("%a %m/%d/%Y %I:%M %p"); - } - - /* strptime format of a weekday, a date and a time, - in 24-hour format, without seconds. */ - format[num_formats++] = _("%a %m/%d/%Y %H:%M"); - - if (use_12_hour_formats) { - /* strptime format of a weekday, a date and a time, - in 12-hour format, without minutes or seconds. */ - format[num_formats++] = _("%a %m/%d/%Y %I %p"); - } - - /* strptime format of a weekday, a date and a time, - in 24-hour format, without minutes or seconds. */ - format[num_formats++] = _("%a %m/%d/%Y %H"); - - /* strptime format of a weekday and a date. */ - format[num_formats++] = _("%a %m/%d/%Y"); - - - /* - * Now try all the above formats again, but without the weekday. - */ - if (use_12_hour_formats) { - /* strptime format of a date and a time, in 12-hour format. */ - format[num_formats++] = _("%m/%d/%Y %I:%M:%S %p"); - } - - /* strptime format of a date and a time, in 24-hour format. */ - format[num_formats++] = _("%m/%d/%Y %H:%M:%S"); - - if (use_12_hour_formats) { - /* strptime format of a date and a time, in 12-hour format, - without seconds. */ - format[num_formats++] = _("%m/%d/%Y %I:%M %p"); - } - - /* strptime format of a date and a time, in 24-hour format, - without seconds. */ - format[num_formats++] = _("%m/%d/%Y %H:%M"); - - if (use_12_hour_formats) { - /* strptime format of a date and a time, in 12-hour format, - without minutes or seconds. */ - format[num_formats++] = _("%m/%d/%Y %I %p"); - } - - /* strptime format of a date and a time, in 24-hour format, - without minutes or seconds. */ - format[num_formats++] = _("%m/%d/%Y %H"); - - /* strptime format of a weekday and a date. */ - format[num_formats++] = _("%m/%d/%Y"); - - - status = parse_with_strptime (value, result, format, num_formats); - /* Note that we checked if it was empty already, so it is either OK - or INVALID here. */ - if (status == E_TIME_PARSE_OK) { - /* If a 2-digit year was used we use the current century. */ - if (result->tm_year < 0) { - t = time (NULL); - today_tm = localtime (&t); - - /* This should convert it into a value from 0 to 99. */ - result->tm_year += 1900; - - /* Now add on the century. */ - result->tm_year += today_tm->tm_year - - (today_tm->tm_year % 100); - } - } else { - /* Now we try to just parse a time, assuming the current day.*/ - status = e_time_parse_time (value, result); - if (status == E_TIME_PARSE_OK) { - /* We fill in the current day. */ - t = time (NULL); - today_tm = localtime (&t); - result->tm_mday = today_tm->tm_mday; - result->tm_mon = today_tm->tm_mon; - result->tm_year = today_tm->tm_year; - } - } - - return status; -} - -/** - * e_time_parse_date: - * @value: A date string. - * @result: Return value for the parsed date. - * - * Takes in a date string entered by the user and tries to convert it to - * a struct tm. - * - * Return value: Result code indicating whether the @value was an empty - * string, a valid date, or an invalid date. - **/ -ETimeParseStatus -e_time_parse_date (const char *value, struct tm *result) -{ - const char *format[2]; - struct tm *today_tm; - time_t t; - ETimeParseStatus status; - - g_return_val_if_fail (value != NULL, E_TIME_PARSE_INVALID); - g_return_val_if_fail (result != NULL, E_TIME_PARSE_INVALID); - - /* strptime format of a weekday and a date. */ - format[0] = _("%a %m/%d/%Y"); - - /* This is the preferred date format for the locale. */ - format[1] = _("%m/%d/%Y"); - - status = parse_with_strptime (value, result, format, sizeof (format) / sizeof (format[0])); - if (status == E_TIME_PARSE_OK) { - /* If a 2-digit year was used we use the current century. */ - if (result->tm_year < 0) { - t = time (NULL); - today_tm = localtime (&t); - - /* This should convert it into a value from 0 to 99. */ - result->tm_year += 1900; - - /* Now add on the century. */ - result->tm_year += today_tm->tm_year - - (today_tm->tm_year % 100); - } - } - - return status; -} - - -/* - * Parses a string containing a time. It is expected to be in a format - * something like "14:20:00", though we use gettext to support the appropriate - * local formats and we try to accept slightly different formats, e.g. we can - * accept 12-hour formats with an am/pm string. - * - * Returns E_TIME_PARSE_OK if it could not be parsed, E_TIME_PARSE_NONE if it - * was empty, or E_TIME_PARSE_INVALID if it couldn't be parsed. - */ -ETimeParseStatus -e_time_parse_time (const char *value, struct tm *result) -{ - const char *format[6]; - int num_formats = 0; - gboolean use_12_hour_formats = locale_supports_12_hour_format (); - - if (use_12_hour_formats) { - /* strptime format for a time of day, in 12-hour format. */ - format[num_formats++] = _("%I:%M:%S %p"); - } - - /* strptime format for a time of day, in 24-hour format. */ - format[num_formats++] = _("%H:%M:%S"); - - if (use_12_hour_formats) { - /* strptime format for time of day, without seconds, - in 12-hour format. */ - format[num_formats++] = _("%I:%M %p"); - } - - /* strptime format for time of day, without seconds 24-hour format. */ - format[num_formats++] = _("%H:%M"); - - if (use_12_hour_formats) { - /* strptime format for hour and AM/PM, 12-hour format. */ - format[num_formats++] = _("%I %p"); - } - - /* strptime format for hour, 24-hour format. */ - format[num_formats++] = "%H"; - - return parse_with_strptime (value, result, format, num_formats); -} - - -/* Creates a string representation of a time value and stores it in buffer. - buffer_size should be about 64 to be safe. If show_midnight is FALSE, and - the time is midnight, then we just show the date. If show_zero_seconds - is FALSE, then if the time has zero seconds only the hour and minute are - shown. */ -void -e_time_format_date_and_time (struct tm *date_tm, - gboolean use_24_hour_format, - gboolean show_midnight, - gboolean show_zero_seconds, - char *buffer, - int buffer_size) -{ - char *format; - - if (!show_midnight && date_tm->tm_hour == 0 - && date_tm->tm_min == 0 && date_tm->tm_sec == 0) { - /* strftime format of a weekday and a date. */ - format = _("%a %m/%d/%Y"); - } else if (use_24_hour_format) { - if (!show_zero_seconds && date_tm->tm_sec == 0) - /* strftime format of a weekday, a date and a - time, in 24-hour format, without seconds. */ - format = _("%a %m/%d/%Y %H:%M"); - else - /* strftime format of a weekday, a date and a - time, in 24-hour format. */ - format = _("%a %m/%d/%Y %H:%M:%S"); - } else { - if (!show_zero_seconds && date_tm->tm_sec == 0) - /* strftime format of a weekday, a date and a - time, in 12-hour format, without seconds. */ - format = _("%a %m/%d/%Y %I:%M %p"); - else - /* strftime format of a weekday, a date and a - time, in 12-hour format. */ - format = _("%a %m/%d/%Y %I:%M:%S %p"); - } - - /* strftime returns 0 if the string doesn't fit, and leaves the buffer - undefined, so we set it to the empty string in that case. */ - if (e_utf8_strftime (buffer, buffer_size, format, date_tm) == 0) - buffer[0] = '\0'; -} - - -/* Creates a string representation of a time value and stores it in buffer. - buffer_size should be about 64 to be safe. */ -void -e_time_format_time (struct tm *date_tm, - gboolean use_24_hour_format, - gboolean show_zero_seconds, - char *buffer, - int buffer_size) -{ - char *format; - - if (use_24_hour_format) { - if (!show_zero_seconds && date_tm->tm_sec == 0) - /* strftime format of a time in 24-hour format, - without seconds. */ - format = _("%H:%M"); - else - /* strftime format of a time in 24-hour format. */ - format = _("%H:%M:%S"); - } else { - if (!show_zero_seconds && date_tm->tm_sec == 0) - /* strftime format of a time in 12-hour format, - without seconds. */ - format = _("%I:%M %p"); - else - /* strftime format of a time in 12-hour format. */ - format = _("%I:%M:%S %p"); - } - - /* strftime returns 0 if the string doesn't fit, and leaves the buffer - undefined, so we set it to the empty string in that case. */ - if (e_utf8_strftime (buffer, buffer_size, format, date_tm) == 0) - buffer[0] = '\0'; -} - - -/* Like mktime(3), but assumes UTC instead of local timezone. */ -time_t -e_mktime_utc (struct tm *tm) -{ - time_t tt; - - tm->tm_isdst = -1; - tt = mktime (tm); - -#if defined (HAVE_TM_GMTOFF) - tt += tm->tm_gmtoff; -#elif defined (HAVE_TIMEZONE) - if (tm->tm_isdst > 0) { - #if defined (HAVE_ALTZONE) - tt -= altzone; - #else /* !defined (HAVE_ALTZONE) */ - tt -= (timezone - 3600); - #endif - } else - tt -= timezone; -#endif - - return tt; -} - -/* Like localtime_r(3), but also returns an offset in seconds after UTC. - (Calling gmtime with tt + offset would generate the same tm) */ -void -e_localtime_with_offset (time_t tt, struct tm *tm, int *offset) -{ - localtime_r (&tt, tm); - -#if defined (HAVE_TM_GMTOFF) - *offset = tm->tm_gmtoff; -#elif defined (HAVE_TIMEZONE) - if (tm->tm_isdst > 0) { - #if defined (HAVE_ALTZONE) - *offset = -altzone; - #else /* !defined (HAVE_ALTZONE) */ - *offset = -(timezone - 3600); - #endif - } else - *offset = -timezone; -#endif -} |