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datetime: Add hacks to support all the TZs

Browse source 
On a recent Linux system, so all the existing timezones
(apart from factory and posixrules) are attached to a location,
or a GMT offset.

https://bugzilla.gnome.org/show_bug.cgi?id=644782
This commit is contained in:
Bastien Nocera 2011-04-15 02:27:46 +01:00
parent 8d15af48c8
commit 3e8afd5750
1 changed files with 81 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

84
panels/datetime/tz.c
View file

@ -250,18 +250,91 @@ tz_info_free (TzInfo *tzinfo)
g_free (tzinfo);
}
struct {
const char *orig;
const char *dest;
} aliases[] = {
{ "Asia/Istanbul", "Europe/Istanbul" }, /* Istanbul is in both Europe and Asia */
{ "Europe/Nicosia", "Asia/Nicosia" }, /* Ditto */
{ "EET", "Europe/Istanbul" }, /* Same tz as the 2 above */
{ "HST", "Pacific/Honolulu" },
{ "WET", "Europe/Brussels" }, /* Other name for the mainland Europe tz */
{ "CET", "Europe/Brussels" }, /* ditto */
{ "MET", "Europe/Brussels" },
{ "Etc/Zulu", "Etc/GMT" },
{ "Etc/UTC", "Etc/GMT" },
{ "GMT", "Etc/GMT" },
{ "Greenwich", "Etc/GMT" },
{ "Etc/UCT", "Etc/GMT" },
{ "Etc/GMT0", "Etc/GMT" },
{ "Etc/GMT+0", "Etc/GMT" },
{ "Etc/GMT-0", "Etc/GMT" },
{ "Etc/Universal", "Etc/GMT" },
{ "PST8PDT", "America/Los_Angeles" }, /* Other name for the Atlantic tz */
{ "EST", "America/New_York" }, /* Other name for the Eastern tz */
{ "EST5EDT", "America/New_York" }, /* ditto */
{ "CST6CDT", "America/Chicago" }, /* Other name for the Central tz */
{ "MST", "America/Denver" }, /* Other name for the mountain tz */
{ "MST7MDT", "America/Denver" }, /* ditto */
};
static gboolean
compare_timezones (const char *a,
const char *b)
{
if (g_str_equal (a, b))
return TRUE;
if (strchr (b, '/') == NULL) {
char *prefixed;
prefixed = g_strdup_printf ("/%s", b);
if (g_str_has_suffix (a, prefixed)) {
g_free (prefixed);
return TRUE;
}
g_free (prefixed);
}
return FALSE;
}
char *
tz_info_get_clean_name (TzDB *tz_db,
const char *tz)
{
char *ret;
const char *timezone;
guint i;
gboolean replaced;
/* Remove useless prefixes */
if (g_str_has_prefix (tz, "right/"))
timezone = tz + strlen ("right/");
tz = tz + strlen ("right/");
else if (g_str_has_prefix (tz, "posix/"))
timezone = tz + strlen ("posix/");
else
tz = tz + strlen ("posix/");
/* Here start the crazies */
replaced = FALSE;
for (i = 0; i < G_N_ELEMENTS (aliases); i++) {
if (compare_timezones (tz, aliases[i].orig)) {
replaced = TRUE;
timezone = aliases[i].dest;
break;
}
}
/* Try again! */
if (!replaced) {
/* Ignore crazy solar times from the '80s */
if (g_str_has_prefix (tz, "Asia/Riyadh") ||
g_str_has_prefix (tz, "Mideast/Riyadh")) {
timezone = "Asia/Riyadh";
replaced = TRUE;
}
}
if (!replaced)
timezone = tz;
ret = g_hash_table_lookup (tz_db->backward, timezone);
@ -387,6 +460,11 @@ load_backward_tz (TzDB *tz_db)
if (real == NULL || alias == NULL)
g_warning ("Could not parse line: %s", lines[i]);
/* We don't need more than one name for it */
if (g_str_equal (real, "Etc/UTC") ||
g_str_equal (real, "Etc/UCT"))
real = "Etc/GMT";
g_hash_table_insert (tz_db->backward, g_strdup (alias), g_strdup (real));
g_strfreev (items);
}