diff options
Diffstat (limited to 'src/utils.c')
| -rw-r--r-- | src/utils.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 0000000..f4eb53f --- /dev/null +++ b/src/utils.c @@ -0,0 +1,307 @@ +/* + * Copyright 2010, 2014 Canonical Ltd. + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 3, as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranties of + * MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>. + * + * Authors: + * Michael Terry <michael.terry@canonical.com> + * Charles Kerr <charles.kerr@canonical.com> + */ + + +#include <datetime/utils.h> +#include <datetime/settings-shared.h> + +#include <glib.h> +#include <glib/gi18n.h> + +#include <locale.h> +#include <langinfo.h> +#include <string.h> + +/* Check the system locale setting to see if the format is 24-hour + time or 12-hour time */ +gboolean +is_locale_12h(void) +{ + int i; + static const char *formats_24h[] = {"%H", "%R", "%T", "%OH", "%k", NULL}; + const char* t_fmt = nl_langinfo(T_FMT); + + for (i=0; formats_24h[i]!=NULL; i++) + if (strstr(t_fmt, formats_24h[i]) != NULL) + return FALSE; + + return TRUE; +} + +void +split_settings_location(const gchar* location, gchar** zone, gchar** name) +{ + gchar* location_dup = g_strdup(location); + if(location_dup != NULL) + g_strstrip(location_dup); + + gchar* first; + if(location_dup && (first = strchr(location_dup, ' '))) + *first = '\0'; + + if(zone) + *zone = location_dup; + + if(name != NULL) + { + gchar* after = first ? g_strstrip(first + 1) : NULL; + + if(after && *after) + { + *name = g_strdup(after); + } + else if (location_dup) // make the name from zone + { + gchar * chr = strrchr(location_dup, '/'); + after = g_strdup(chr ? chr + 1 : location_dup); + + // replace underscores with spaces + for(chr=after; chr && *chr; chr++) + if(*chr == '_') + *chr = ' '; + + *name = after; + } + else + { + *name = NULL; + } + } +} + +/** + * Our Locations come from two places: (1) direct user input and (2) ones + * guessed by the system, such as from geoclue or timedate1. + * + * Since the latter only have a timezone (eg, "America/Chicago") and the + * former have a descriptive name provided by the end user (eg, + * "America/Chicago Oklahoma City"), this function tries to make a + * more human-readable name by using the user-provided name if the guessed + * timezone matches the last one the user manually clicked on. + * + * In the example above, this allows the menuitem for the system-guessed + * timezone ("America/Chicago") to read "Oklahoma City" after the user clicks + * on the "Oklahoma City" menuitem. + */ +gchar* +get_beautified_timezone_name(const char* timezone_, const char* saved_location) +{ + gchar* zone; + gchar* name; + split_settings_location(timezone_, &zone, &name); + + gchar* saved_zone; + gchar* saved_name; + split_settings_location(saved_location, &saved_zone, &saved_name); + + gchar* rv; + if (g_strcmp0(zone, saved_zone) == 0) + { + rv = saved_name; + saved_name = NULL; + } + else + { + rv = name; + name = NULL; + } + + g_free(zone); + g_free(name); + g_free(saved_zone); + g_free(saved_name); + return rv; +} + +gchar* +get_timezone_name(const gchar* timezone_, GSettings* settings) +{ + gchar* saved_location = g_settings_get_string(settings, SETTINGS_TIMEZONE_NAME_S); + gchar* rv = get_beautified_timezone_name(timezone_, saved_location); + g_free(saved_location); + return rv; +} + +/*** +**** +***/ + +typedef enum +{ + DATE_PROXIMITY_TODAY, + DATE_PROXIMITY_TOMORROW, + DATE_PROXIMITY_WEEK, + DATE_PROXIMITY_FAR +} +date_proximity_t; + +static date_proximity_t +getDateProximity(GDateTime* now, GDateTime* time) +{ + date_proximity_t prox = DATE_PROXIMITY_FAR; + gint now_year, now_month, now_day; + gint time_year, time_month, time_day; + + // does it happen today? + g_date_time_get_ymd(now, &now_year, &now_month, &now_day); + g_date_time_get_ymd(time, &time_year, &time_month, &time_day); + if ((now_year == time_year) && (now_month == time_month) && (now_day == time_day)) + prox = DATE_PROXIMITY_TODAY; + + // does it happen tomorrow? + if (prox == DATE_PROXIMITY_FAR) + { + GDateTime* tomorrow = g_date_time_add_days(now, 1); + + gint tom_year, tom_month, tom_day; + g_date_time_get_ymd(tomorrow, &tom_year, &tom_month, &tom_day); + if ((tom_year == time_year) && (tom_month == time_month) && (tom_day == time_day)) + prox = DATE_PROXIMITY_TOMORROW; + + g_date_time_unref(tomorrow); + } + + // does it happen this week? + if (prox == DATE_PROXIMITY_FAR) + { + GDateTime* week = g_date_time_add_days(now, 6); + GDateTime* week_bound = g_date_time_new_local(g_date_time_get_year(week), + g_date_time_get_month(week), + g_date_time_get_day_of_month(week), + 23, 59, 59.9); + + if (g_date_time_compare(time, week_bound) <= 0) + prox = DATE_PROXIMITY_WEEK; + + g_date_time_unref(week_bound); + g_date_time_unref(week); + } + + return prox; +} + +const char* +T_(const char *msg) +{ + /* General strategy here is to make sure LANGUAGE is empty (since that + trumps all LC_* vars) and then to temporarily swap LC_TIME and + LC_MESSAGES. Then have gettext translate msg. + + We strdup the strings because the setlocale & *env functions do not + guarantee anything about the storage used for the string, and thus + the string may not be portably safe after multiple calls. + + Note that while you might think g_dcgettext would do the trick here, + that actually looks in /usr/share/locale/XX/LC_TIME, not the + LC_MESSAGES directory, so we won't find any translation there. + */ + + gchar* message_locale = g_strdup(setlocale(LC_MESSAGES, NULL)); + const char* time_locale = setlocale(LC_TIME, NULL); + gchar* language = g_strdup(g_getenv("LANGUAGE")); + + if (language) + g_unsetenv("LANGUAGE"); + setlocale(LC_MESSAGES, time_locale); + + /* Get the LC_TIME version */ + const char* rv = _(msg); + + /* Put everything back the way it was */ + setlocale(LC_MESSAGES, message_locale); + if (language) + g_setenv("LANGUAGE", language, TRUE); + + g_free(message_locale); + g_free(language); + return rv; +} + + +/** + * _ a time today should be shown as just the time (e.g. “3:55 PM”) + * _ a full-day event today should be shown as “Today” + * _ a time any other day this week should be shown as the short version of the + * day and time (e.g. “Wed 3:55 PM”) + * _ a full-day event tomorrow should be shown as “Tomorrow” + * _ a full-day event another day this week should be shown as the + * weekday (e.g. “Friday”) + * _ a time after this week should be shown as the short version of the day, + * date, and time (e.g. “Wed 21 Apr 3:55 PM”) + * _ a full-day event after this week should be shown as the short version of + * the day and date (e.g. “Wed 21 Apr”). + * _ in addition, when presenting the times of upcoming events, the time should + * be followed by the timezone if it is different from the one the computer + * is currently set to. For example, “Wed 3:55 PM UTC−5”. + */ +char* generate_full_format_string_at_time (GDateTime* now, + GDateTime* then, + GDateTime* then_end) +{ + GString* ret = g_string_new (NULL); + + if (then != NULL) + { + const gboolean full_day = then_end && (g_date_time_difference(then_end, then) >= G_TIME_SPAN_DAY); + const date_proximity_t prox = getDateProximity(now, then); + + if (full_day) + { + switch (prox) + { + case DATE_PROXIMITY_TODAY: g_string_assign (ret, T_("Today")); break; + case DATE_PROXIMITY_TOMORROW: g_string_assign (ret, T_("Tomorrow")); break; + case DATE_PROXIMITY_WEEK: g_string_assign (ret, T_("%A")); break; + case DATE_PROXIMITY_FAR: g_string_assign (ret, T_("%a %d %b")); break; + } + } + else if (is_locale_12h()) + { + switch (prox) + { + case DATE_PROXIMITY_TODAY: g_string_assign (ret, T_("%l:%M %p")); break; + case DATE_PROXIMITY_TOMORROW: g_string_assign (ret, T_("Tomorrow\u2003%l:%M %p")); break; + case DATE_PROXIMITY_WEEK: g_string_assign (ret, T_("%a\u2003%l:%M %p")); break; + case DATE_PROXIMITY_FAR: g_string_assign (ret, T_("%a %d %b\u2003%l:%M %p")); break; + } + } + else + { + switch (prox) + { + case DATE_PROXIMITY_TODAY: g_string_assign (ret, T_("%H:%M")); break; + case DATE_PROXIMITY_TOMORROW: g_string_assign (ret, T_("Tomorrow\u2003%H:%M")); break; + case DATE_PROXIMITY_WEEK: g_string_assign (ret, T_("%a\u2003%H:%M")); break; + case DATE_PROXIMITY_FAR: g_string_assign (ret, T_("%a %d %b\u2003%H:%M")); break; + } + } + + /* if it's an appointment in a different timezone (and doesn't run for a full day) + then the time should be followed by its timezone. */ + if ((then_end != NULL) && + (!full_day) && + ((g_date_time_get_utc_offset(now) != g_date_time_get_utc_offset(then)))) + { + g_string_append_printf (ret, " %s", g_date_time_get_timezone_abbreviation(then)); + } + } + + return g_string_free (ret, FALSE); +} |