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authorMichael Terry <michael.terry@canonical.com>2012-01-09 12:09:20 +0000
committerMichael Terry <michael.terry@canonical.com>2012-01-09 12:09:20 +0000
commit49965d030fd65d3607ea0b611545163d45019852 (patch)
treedcdf5550aecb492768d2336345b2992839b5c883 /libmap/tz.c
parentc5e62b64e1b8bc31266b426ccb1975300d365bc2 (diff)
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use libtimezonemap
Diffstat (limited to 'libmap/tz.c')
-rw-r--r--libmap/tz.c399
1 files changed, 0 insertions, 399 deletions
diff --git a/libmap/tz.c b/libmap/tz.c
deleted file mode 100644
index b77a8ef..0000000
--- a/libmap/tz.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* Generic timezone utilities.
- *
- * Copyright (C) 2000-2001 Ximian, Inc.
- *
- * Authors: Hans Petter Jansson <hpj@ximian.com>
- *
- * Largely based on Michael Fulbright's work on Anaconda.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-
-#include <glib.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <time.h>
-#include <math.h>
-#include <string.h>
-#include "tz.h"
-
-
-/* Forward declarations for private functions */
-
-static float convert_pos (gchar *pos, int digits);
-static int compare_country_names (const void *a, const void *b);
-static void sort_locations_by_country (GPtrArray *locations);
-static gchar * tz_data_file_get (void);
-
-
-/* ---------------- *
- * Public interface *
- * ---------------- */
-TzDB *
-tz_load_db (void)
-{
- gchar *tz_data_file;
- TzDB *tz_db;
- FILE *tzfile;
- char buf[4096];
-
- tz_data_file = tz_data_file_get ();
- if (!tz_data_file) {
- g_warning ("Could not get the TimeZone data file name");
- return NULL;
- }
- tzfile = fopen (tz_data_file, "r");
- if (!tzfile) {
- g_warning ("Could not open *%s*\n", tz_data_file);
- g_free (tz_data_file);
- return NULL;
- }
-
- tz_db = g_new0 (TzDB, 1);
- tz_db->locations = g_ptr_array_new ();
-
- while (fgets (buf, sizeof(buf), tzfile))
- {
- gchar **tmpstrarr;
- gchar *latstr, *lngstr, *p;
- TzLocation *loc;
-
- if (*buf == '#') continue;
-
- g_strchomp(buf);
- tmpstrarr = g_strsplit(buf,"\t", 6);
-
- latstr = g_strdup (tmpstrarr[1]);
- p = latstr + 1;
- while (*p != '-' && *p != '+') p++;
- lngstr = g_strdup (p);
- *p = '\0';
-
- loc = g_new0 (TzLocation, 1);
- loc->country = g_strdup (tmpstrarr[0]);
- loc->zone = g_strdup (tmpstrarr[2]);
- loc->latitude = convert_pos (latstr, 2);
- loc->longitude = convert_pos (lngstr, 3);
-
-#ifdef __sun
- if (tmpstrarr[3] && *tmpstrarr[3] == '-' && tmpstrarr[4])
- loc->comment = g_strdup (tmpstrarr[4]);
-
- if (tmpstrarr[3] && *tmpstrarr[3] != '-' && !islower(loc->zone)) {
- TzLocation *locgrp;
-
- /* duplicate entry */
- locgrp = g_new0 (TzLocation, 1);
- locgrp->country = g_strdup (tmpstrarr[0]);
- locgrp->zone = g_strdup (tmpstrarr[3]);
- locgrp->latitude = convert_pos (latstr, 2);
- locgrp->longitude = convert_pos (lngstr, 3);
- locgrp->comment = (tmpstrarr[4]) ? g_strdup (tmpstrarr[4]) : NULL;
-
- g_ptr_array_add (tz_db->locations, (gpointer) locgrp);
- }
-#else
- loc->comment = (tmpstrarr[3]) ? g_strdup(tmpstrarr[3]) : NULL;
-#endif
-
- g_ptr_array_add (tz_db->locations, (gpointer) loc);
-
- g_free (latstr);
- g_free (lngstr);
- g_strfreev (tmpstrarr);
- }
-
- fclose (tzfile);
-
- /* now sort by country */
- sort_locations_by_country (tz_db->locations);
-
- g_free (tz_data_file);
-
- return tz_db;
-}
-
-static void
-tz_location_free (TzLocation *loc)
-{
- g_free (loc->country);
- g_free (loc->zone);
- g_free (loc->comment);
-
- g_free (loc);
-}
-
-void
-tz_db_free (TzDB *db)
-{
- g_ptr_array_foreach (db->locations, (GFunc) tz_location_free, NULL);
- g_ptr_array_free (db->locations, TRUE);
- g_free (db);
-}
-
-static gint
-sort_locations (TzLocation *a,
- TzLocation *b)
-{
- if (a->dist > b->dist)
- return 1;
-
- if (a->dist < b->dist)
- return -1;
-
- return 0;
-}
-
-static gdouble
-convert_longtitude_to_x (gdouble longitude, gint map_width)
-{
- const gdouble xdeg_offset = -6;
- gdouble x;
-
- x = (map_width * (180.0 + longitude) / 360.0)
- + (map_width * xdeg_offset / 180.0);
-
- return x;
-}
-
-static gdouble
-radians (gdouble degrees)
-{
- return (degrees / 360.0) * G_PI * 2;
-}
-
-static gdouble
-convert_latitude_to_y (gdouble latitude, gdouble map_height)
-{
- gdouble bottom_lat = -59;
- gdouble top_lat = 81;
- gdouble top_per, y, full_range, top_offset, map_range;
-
- top_per = top_lat / 180.0;
- y = 1.25 * log (tan (G_PI_4 + 0.4 * radians (latitude)));
- full_range = 4.6068250867599998;
- top_offset = full_range * top_per;
- map_range = fabs (1.25 * log (tan (G_PI_4 + 0.4 * radians (bottom_lat))) - top_offset);
- y = fabs (y - top_offset);
- y = y / map_range;
- y = y * map_height;
- return y;
-}
-
-GPtrArray *
-tz_get_locations (TzDB *db)
-{
- return db->locations;
-}
-
-
-gchar *
-tz_location_get_country (TzLocation *loc)
-{
- return loc->country;
-}
-
-
-gchar *
-tz_location_get_zone (TzLocation *loc)
-{
- return loc->zone;
-}
-
-
-gchar *
-tz_location_get_comment (TzLocation *loc)
-{
- return loc->comment;
-}
-
-
-void
-tz_location_get_position (TzLocation *loc, double *longitude, double *latitude)
-{
- *longitude = loc->longitude;
- *latitude = loc->latitude;
-}
-
-glong
-tz_location_get_utc_offset (TzLocation *loc)
-{
- TzInfo *tz_info;
- glong offset;
-
- tz_info = tz_info_from_location (loc);
- offset = tz_info->utc_offset;
- tz_info_free (tz_info);
- return offset;
-}
-
-gint
-tz_location_set_locally (TzLocation *loc)
-{
- time_t curtime;
- struct tm *curzone;
- gboolean is_dst = FALSE;
- gint correction = 0;
-
- g_return_val_if_fail (loc != NULL, 0);
- g_return_val_if_fail (loc->zone != NULL, 0);
-
- curtime = time (NULL);
- curzone = localtime (&curtime);
- is_dst = curzone->tm_isdst;
-
- setenv ("TZ", loc->zone, 1);
-#if 0
- curtime = time (NULL);
- curzone = localtime (&curtime);
-
- if (!is_dst && curzone->tm_isdst) {
- correction = (60 * 60);
- }
- else if (is_dst && !curzone->tm_isdst) {
- correction = 0;
- }
-#endif
-
- return correction;
-}
-
-TzInfo *
-tz_info_from_location (TzLocation *loc)
-{
- TzInfo *tzinfo;
- time_t curtime;
- struct tm *curzone;
-
- g_return_val_if_fail (loc != NULL, NULL);
- g_return_val_if_fail (loc->zone != NULL, NULL);
-
- setenv ("TZ", loc->zone, 1);
-
-#if 0
- tzset ();
-#endif
- tzinfo = g_new0 (TzInfo, 1);
-
- curtime = time (NULL);
- curzone = localtime (&curtime);
-
-#ifndef __sun
- /* Currently this solution doesnt seem to work - I get that */
- /* America/Phoenix uses daylight savings, which is wrong */
- tzinfo->tzname_normal = g_strdup (curzone->tm_zone);
- if (curzone->tm_isdst)
- tzinfo->tzname_daylight =
- g_strdup (&curzone->tm_zone[curzone->tm_isdst]);
- else
- tzinfo->tzname_daylight = NULL;
-
- tzinfo->utc_offset = curzone->tm_gmtoff;
-#else
- tzinfo->tzname_normal = NULL;
- tzinfo->tzname_daylight = NULL;
- tzinfo->utc_offset = 0;
-#endif
-
- tzinfo->daylight = curzone->tm_isdst;
-
- return tzinfo;
-}
-
-
-void
-tz_info_free (TzInfo *tzinfo)
-{
- g_return_if_fail (tzinfo != NULL);
-
- if (tzinfo->tzname_normal) g_free (tzinfo->tzname_normal);
- if (tzinfo->tzname_daylight) g_free (tzinfo->tzname_daylight);
- g_free (tzinfo);
-}
-
-/* ----------------- *
- * Private functions *
- * ----------------- */
-
-static gchar *
-tz_data_file_get (void)
-{
- gchar *file;
-
- file = g_strdup (TZ_DATA_FILE);
-
- return file;
-}
-
-static float
-convert_pos (gchar *pos, int digits)
-{
- gchar whole[10];
- gchar *fraction;
- gint i;
- float t1, t2;
-
- if (!pos || strlen(pos) < 4 || digits > 9) return 0.0;
-
- for (i = 0; i < digits + 1; i++) whole[i] = pos[i];
- whole[i] = '\0';
- fraction = pos + digits + 1;
-
- t1 = g_strtod (whole, NULL);
- t2 = g_strtod (fraction, NULL);
-
- if (t1 >= 0.0) return t1 + t2/pow (10.0, strlen(fraction));
- else return t1 - t2/pow (10.0, strlen(fraction));
-}
-
-
-#if 0
-
-/* Currently not working */
-static void
-free_tzdata (TzLocation *tz)
-{
-
- if (tz->country)
- g_free(tz->country);
- if (tz->zone)
- g_free(tz->zone);
- if (tz->comment)
- g_free(tz->comment);
-
- g_free(tz);
-}
-#endif
-
-
-static int
-compare_country_names (const void *a, const void *b)
-{
- const TzLocation *tza = * (TzLocation **) a;
- const TzLocation *tzb = * (TzLocation **) b;
-
- return strcmp (tza->zone, tzb->zone);
-}
-
-
-static void
-sort_locations_by_country (GPtrArray *locations)
-{
- qsort (locations->pdata, locations->len, sizeof (gpointer),
- compare_country_names);
-}