From 3e6180183bdc01edfa01dc4b966daa4081c29604 Mon Sep 17 00:00:00 2001
From: Friendika <info@friendika.com>
Date: Mon, 23 May 2011 17:18:36 -0700
Subject: improved browser language detect, set user language on login

---
 include/auth.php     |  4 +++-
 include/pgettext.php | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/auth.php b/include/auth.php
index 1c430406e..382d2c658 100644
--- a/include/auth.php
+++ b/include/auth.php
@@ -232,9 +232,11 @@ else {
 			$_SESSION['cid'] = $a->cid;
 		}
 
+		$l = get_language();
 
-		q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d LIMIT 1",
+		q("UPDATE `user` SET `login_date` = '%s', `language` = '%s' WHERE `uid` = %d LIMIT 1",
 			dbesc(datetime_convert()),
+			dbesc($l),
 			intval($_SESSION['uid'])
 		);
 
diff --git a/include/pgettext.php b/include/pgettext.php
index 2ffee70bc..37e09b54d 100644
--- a/include/pgettext.php
+++ b/include/pgettext.php
@@ -1,8 +1,59 @@
 <?php
+
 /**
  * translation support
  */
 
+
+/**
+ *
+ * Get the language setting directly from system variables, bypassing get_config()
+ * as database may not yet be configured.
+ * 
+ * If possible, we use the value from the browser.
+ *
+ */
+
+
+if(! function_exists('get_language')) {
+function get_language() {
+
+	if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+	    // break up string into pieces (languages and q factors)
+    	preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', 
+			$_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
+
+    	if (count($lang_parse[1])) {
+        	// create a list like "en" => 0.8
+        	$langs = array_combine($lang_parse[1], $lang_parse[4]);
+    	
+        	// set default to 1 for any without q factor
+        	foreach ($langs as $lang => $val) {
+            	if ($val === '') $langs[$lang] = 1;
+        	}
+
+        	// sort list based on value	
+        	arsort($langs, SORT_NUMERIC);
+    	}
+	}
+
+	if(isset($langs) && count($langs)) {
+		foreach ($langs as $lang => $v) {
+			if(file_exists("view/$lang") && is_dir("view/$lang")) {
+				$preferred = $lang;
+				break;
+			}
+		}
+	}
+
+	if(isset($preferred))
+		return $preferred;
+
+	return ((isset($a->config['system']['language'])) ? $a->config['system']['language'] : 'en');
+}}
+
+
+
 // load string translation table for alternate language
 
 if(! function_exists('load_translation_table')) {
-- 
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