From 9efc08f13fcd898f7bc8ced517e1d7e8596ed096 Mon Sep 17 00:00:00 2001
From: Hyunjee Kim <hj0426.kim@samsung.com>
Date: Tue, 10 Oct 2017 15:09:10 +0900
Subject: [PATCH] Implement fallback mechanism to set the time zone to default
 time zone

Change-Id: I32df21864719fe72b48149549539d0bad455e4c7
Signed-off-by: Hyunjee Kim <hj0426.kim@samsung.com>
---
 src/utils_i18n_timezone.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/utils_i18n_timezone.cpp b/src/utils_i18n_timezone.cpp
index df6e10f..5e773ef 100755
--- a/src/utils_i18n_timezone.cpp
+++ b/src/utils_i18n_timezone.cpp
@@ -22,6 +22,7 @@
 #include <utils_i18n_private.h>
 #include <utils_i18n_ustring.h>
 
+#include <unistd.h>
 #include <unicode/ustdio.h>
 #include <unicode/ucal.h>
 #include <unicode/timezone.h>
@@ -191,10 +192,34 @@ int i18n_timezone_get_equivalent_id(const char *timezone_id, int32_t index,
     return I18N_ERROR_NONE;
 }
 
+#define TZDEFAULT "/opt/etc/localtime"
+#define TZZONEINFO "/usr/share/zoneinfo/"
+
 int i18n_timezone_create_default(i18n_timezone_h *timezone)
 {
     retv_if(timezone == NULL, I18N_ERROR_INVALID_PARAMETER);
     *timezone = TimeZone::createDefault();
+	//Implement fallback mechanism to set the time zone to default time zone
+	char* zoneInfo = NULL;
+	UnicodeString TimezoneID;
+	((TimeZone *) *timezone)->getID(TimezoneID);
+	const UChar *tid = TimezoneID.getTerminatedBuffer();
+	char tzpath[1024];
+	int32_t ret = (int32_t) readlink(TZDEFAULT, tzpath, sizeof(tzpath) - 1);
+	if(ret > 0)
+	{
+		tzpath[ret] ='\0';
+		int32_t zoneinfolen = strlen(TZZONEINFO);
+		zoneInfo = tzpath + zoneinfolen;
+	}
+	if(tid == NULL) {
+		*timezone = TimeZone::createTimeZone(zoneInfo);
+		return I18N_ERROR_NONE;
+	}
+	int32_t ulen = i18n_ustring_get_length(tid);
+	if(ulen <= 0) {
+		*timezone = TimeZone::createTimeZone(zoneInfo);
+	}
 
     return I18N_ERROR_NONE;
 }
-- 
2.34.1