From 1991ae6aa9714fa63f09352d4566bb79a4c87b0e Mon Sep 17 00:00:00 2001
From: Jakub Kucharski <jakubkucharski97@gmail.com>
Date: Sun, 7 Feb 2016 13:30:55 +0100
Subject: [PATCH] glib: return UTC dates

---
 glib/poppler-date.cc | 39 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 2 deletions(-)

diff --git a/glib/poppler-date.cc b/glib/poppler-date.cc
index e3141c1..5312843 100644
--- a/glib/poppler-date.cc
+++ b/glib/poppler-date.cc
@@ -1,6 +1,7 @@
 /* poppler-date.cc: glib interface to poppler
  *
  * Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org>
+ * Copyright (C) 2016 Jakub Kucharski <jakubkucharski97@gmail.com>
  *
  * 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
@@ -18,9 +19,37 @@
  */
 
 #include <DateInfo.h>
+#include <string.h>
 
 #include "poppler-date.h"
 
+static time_t
+utc_mktime (struct tm *tm)
+{
+  time_t ret;
+
+  char *tz = getenv("TZ");
+  if (tz) {
+    tz = strdup(tz);
+  }
+
+  setenv("TZ", "", 1);
+  tzset();
+
+  ret = mktime(tm);
+
+  if (tz) {
+    setenv("TZ", tz, 1);
+    free(tz);
+  } else {
+    unsetenv("TZ");
+  }
+
+  tzset();
+
+  return ret;
+}
+
 /**
  * poppler_date_parse:
  * @date: string to parse
@@ -58,10 +87,16 @@ poppler_date_parse (const gchar *date,
   time.tm_isdst = -1; /* 0 = DST off, 1 = DST on, -1 = don't know */
  
   /* compute tm_wday and tm_yday and check date */
-  retval = mktime (&time);
+  retval = utc_mktime (&time);
   if (retval == (time_t) - 1)
     return FALSE;
-    
+
+  gint64 offset = 60*60*tz_hour + 60*tz_minute;
+  if (tz == '-') {
+    offset *= -1;
+  }
+  retval -= offset;
+
   *timet = retval;
 
   return TRUE;	
-- 
2.7.0