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

---
 boot.php             |  7 ++++--
 include/auth.php     |  4 +++-
 include/pgettext.php | 51 ++++++++++++++++++++++++++++++++++++++++++++
 index.php            | 16 +-------------
 mod/openid.php       |  6 +++++-
 5 files changed, 65 insertions(+), 19 deletions(-)

diff --git a/boot.php b/boot.php
index 1a6bf622c4..48d0d79ad6 100644
--- a/boot.php
+++ b/boot.php
@@ -4,7 +4,7 @@ set_time_limit(0);
 ini_set('pcre.backtrack_limit', 250000);
 
 
-define ( 'FRIENDIKA_VERSION',      '2.2.988' );
+define ( 'FRIENDIKA_VERSION',      '2.2.989' );
 define ( 'DFRN_PROTOCOL_VERSION',  '2.21'    );
 define ( 'DB_UPDATE_VERSION',      1054      );
 
@@ -2707,6 +2707,8 @@ function unamp($s) {
 }}
 
 
+
+
 if(! function_exists('lang_selector')) {
 function lang_selector() {
 	global $lang;
@@ -2748,4 +2750,5 @@ function is_site_admin() {
 	if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && ($a->user['email'] === $a->config['admin_email']))
 		return true;
 	return false;
-}}
\ No newline at end of file
+}}
+
diff --git a/include/auth.php b/include/auth.php
index 1c430406e9..382d2c6587 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 2ffee70bcc..37e09b54da 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')) {
diff --git a/index.php b/index.php
index 05eef6c6e0..eb75585c48 100644
--- a/index.php
+++ b/index.php
@@ -29,22 +29,8 @@ $install = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? false
 
 @include(".htconfig.php");
 
-/**
- *
- * 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 (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
-	$langs = preg_split("/[,-]/",$_SERVER['HTTP_ACCEPT_LANGUAGE'],2);
-	$lang = $langs[0];
-} else {
-	$lang = ((isset($a->config['system']['language'])) ? $a->config['system']['language'] : 'en');
-}
 
+$lang = get_language();
 	
 load_translation_table($lang);
 
diff --git a/mod/openid.php b/mod/openid.php
index c3c6c11e9e..7bf8c299c8 100644
--- a/mod/openid.php
+++ b/mod/openid.php
@@ -103,11 +103,15 @@ function openid_content(&$a) {
 				$_SESSION['cid'] = $a->cid;
 			}
 
-			q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d LIMIT 1",
+			$l = get_language();
+
+			q("UPDATE `user` SET `login_date` = '%s', `language` = '%s' WHERE `uid` = %d LIMIT 1",
 				dbesc(datetime_convert()),
+				dbesc($l),
 				intval($_SESSION['uid'])
 			);
 
+
 			header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
 			if(($a->module !== 'home') && isset($_SESSION['return_url']))
 				goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);