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Diffstat (limited to 'src/tpl-time.c')
| -rw-r--r-- | src/tpl-time.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/tpl-time.c b/src/tpl-time.c new file mode 100644 index 0000000..e35c6c8 --- /dev/null +++ b/src/tpl-time.c @@ -0,0 +1,170 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * Copyright (C) 2003-2007 Imendio AB + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301 USA + * + * Authors: Richard Hult <richard@imendio.com> + */ + +#include <time.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <glib/gi18n.h> + +#include <tpl-time.h> + +/* Note: TplTime is always in UTC. */ + +time_t +tpl_time_get_current (void) +{ + return time (NULL); +} + +time_t +tpl_time_get_local_time (struct tm *tm) +{ + const gchar *tz; + time_t t; + + tz = g_getenv ("TZ"); + g_setenv ("TZ", "", TRUE); + + //TODO reenable + //tzset (); + + t = mktime (tm); + + if (tz) { + g_setenv ("TZ", tz, TRUE); + } else { + g_unsetenv ("TZ"); + } + + //TODO reenable + //tzset (); + + return t; +} + +/* The format is: "20021209T23:51:30" and is in UTC. 0 is returned on + * failure. The alternative format "20021209" is also accepted. + */ +time_t +tpl_time_parse (const gchar *str) +{ + struct tm tm; + gint year, month; + gint n_parsed; + + memset (&tm, 0, sizeof (struct tm)); + + n_parsed = sscanf (str, "%4d%2d%2dT%2d:%2d:%2d", + &year, &month, &tm.tm_mday, &tm.tm_hour, + &tm.tm_min, &tm.tm_sec); + if (n_parsed != 3 && n_parsed != 6) { + return 0; + } + + tm.tm_year = year - 1900; + tm.tm_mon = month - 1; + tm.tm_isdst = -1; + + return tpl_time_get_local_time (&tm); +} + +/* Converts the UTC timestamp to a string, also in UTC. Returns NULL on failure. */ +gchar * +tpl_time_to_string_utc (time_t t, + const gchar *format) +{ + gchar stamp[128]; + struct tm *tm; + + g_return_val_if_fail (format != NULL, NULL); + + tm = gmtime (&t); + if (strftime (stamp, sizeof (stamp), format, tm) == 0) { + return NULL; + } + + return g_strdup (stamp); +} + +/* Converts the UTC timestamp to a string, in local time. Returns NULL on failure. */ +gchar * +tpl_time_to_string_local (time_t t, + const gchar *format) +{ + gchar stamp[128]; + struct tm *tm; + + g_return_val_if_fail (format != NULL, NULL); + + tm = localtime (&t); + if (strftime (stamp, sizeof (stamp), format, tm) == 0) { + return NULL; + } + + return g_strdup (stamp); +} + +gchar * +tpl_time_to_string_relative (time_t then) +{ + time_t now; + gint seconds; + + now = time (NULL); + seconds = now - then; + + if (seconds > 0) { + if (seconds < 60) { + return g_strdup_printf (ngettext ("%d second ago", + "%d seconds ago", seconds), seconds); + } + else if (seconds < (60 * 60)) { + seconds /= 60; + return g_strdup_printf (ngettext ("%d minute ago", + "%d minutes ago", seconds), seconds); + } + else if (seconds < (60 * 60 * 24)) { + seconds /= 60 * 60; + return g_strdup_printf (ngettext ("%d hour ago", + "%d hours ago", seconds), seconds); + } + else if (seconds < (60 * 60 * 24 * 7)) { + seconds /= 60 * 60 * 24; + return g_strdup_printf (ngettext ("%d day ago", + "%d days ago", seconds), seconds); + } + else if (seconds < (60 * 60 * 24 * 30)) { + seconds /= 60 * 60 * 24 * 7; + return g_strdup_printf (ngettext ("%d week ago", + "%d weeks ago", seconds), seconds); + } + else { + seconds /= 60 * 60 * 24 * 30; + return g_strdup_printf (ngettext ("%d month ago", + "%d months ago", seconds), seconds); + } + } + else { + return g_strdup (_("in the future")); + } +} |