From ca869524aacbc0b047ce8153da6edc7e1aad2970 Mon Sep 17 00:00:00 2001
From: Zheng Zhu <zhengzhu@users.mediawiki.org>
Date: Sat, 18 Sep 2004 03:37:50 +0000
Subject: [PATCH] moved parsing of the -{}- tag to Language.php, and
 generalized it a little bit so that other languages can use it (hopefully).

---
 languages/Language.php   | 52 ++++++++++++++++++++++++++--
 languages/LanguageZh.php | 73 ++++++++++------------------------------
 2 files changed, 67 insertions(+), 58 deletions(-)

diff --git a/languages/Language.php b/languages/Language.php
index e2c3500b23..84895c06ee 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -1958,17 +1958,65 @@ class Language {
 		return $word;
 	}
 
-	# Hook for Chinese traditional/simplified conversion
+    
+    # convert text to different variants of a language. the automatic
+    # conversion is done in autoConvert(). here we parse the text 
+    # marked with -{}-, which specifies special conversions of the 
+    # text that can not be accomplished in autoConvert()
+    #
+    # syntax of the markup:
+    # -{code1:text1;code2:text2;...}-  or
+    # -{text}- in which case no conversion should take place for text
 	function convert( $text ) {
-		return $text;
+
+        $plang = $this->getPreferredVariant();
+        if(!$plang)
+            return $text;
+
+		// no conversion if redirecting
+		if(substr($text,0,9) == "#REDIRECT") {
+			return $text;
+		}
+
+        $tarray = explode("-{", $text);
+        $tfirst = array_shift($tarray);
+        $text = $this->autoConvert($tfirst);
+
+        foreach($tarray as $txt) {
+            $marked = explode("}-", $txt);
+
+            $choice = explode(";", $marked{0});
+            if($choice{1}==NULL) {
+                $text .= $choice{0};
+            }
+            else {
+                foreach($choice as $c) {
+                    list($code, $content) = split(":", $c);
+                    $code = trim($code);
+                    $content = trim($content);
+                    if($code == $plang) {
+                        $text .= $content;
+                        break;
+                    }
+                }
+            }
+            $text .= $this->autoConvert($marked{1});
+        }
+
+        return $text;
 	}
 
+    function autoConvert($text) {
+        return $text;
+    }
+
     # see if we have a list of language variants for conversion.
     # right now mainly used in the Chinese conversion
     function getVariants() {
         return array();
     }
 
+    # todo: write general code to get default language variant
     function getPreferredVariant() {
         return false;
     }
diff --git a/languages/LanguageZh.php b/languages/LanguageZh.php
index 26e14b7488..3f3228fd15 100644
--- a/languages/LanguageZh.php
+++ b/languages/LanguageZh.php
@@ -33,21 +33,18 @@ class LanguageZh extends LanguageUtf8 {
         if($this->mZhLanguageCode)
             return $this->mZhLanguageCode;
 
-        /* get language variant preference for logged in users */
+        // get language variant preference for logged in users 
         if($wgUser->getID()!=0) {
             $this->mZhLanguageCode = $wgUser->getOption('variant');
         }
-        else { // see if it is in the http header, otherwise default to zh_cn
+        else {
+            // see if some zh- variant is set in the http header,
             $this->mZhLanguageCode="zh-cn";
-            $value = $_SERVER["HTTP_ACCEPT_LANGUAGE"];
-            $zh = explode("zh-", $value);
-            array_shift($zh);
-            $l = array_shift($zh);
-            if($l != NULL) {
-                $this->mZhLanguageCode = "zh-".strtolower(substr($l,0,2));
+            $header = str_replace( '_', '-', strtolower($_SERVER["HTTP_ACCEPT_LANGUAGE"]));
+            $zh = strstr($header, 'zh-');
+            if($zh) {
+                $this->mZhLanguageCode = substr($zh,0,5);
             }
-            // also set the variant option of anons
-            $wgUser->setOption('variant', $this->mZhLanguageCode);
         }
         return $this->mZhLanguageCode;
     }
@@ -65,53 +62,17 @@ class LanguageZh extends LanguageUtf8 {
 		return strtr($text, $wgZhTrad2Simp);
 	}
 	
-	function convert($text) {
-
-		// no conversion if redirecting
-		if(substr($text,0,9) == "#REDIRECT") {
-			return $text;
-		}
-        
-		// determine the preferred language from the request header
-		$tolang = $this->getPreferredVariant();
-	
-		$ltext = explode("-{", $text);
-		$lfirst = array_shift($ltext);
-		
-		if($tolang == "zh-cn") {
-			$text = $this->trad2simp($lfirst);
-		}
-		else {
-			$text = $this->simp2trad($lfirst);
-		}
-		
-		foreach ($ltext as $txt) {
-			$a = explode("}-", $txt);
-			$b = explode("zh-", $a{0});
-			if($b{1}==NULL) {
-				$text = $text.$b{0};
-			}
-			else {
-				foreach ($b as $lang) {
-					if(substr($lang,0,2) == substr($tolang,-2)) {
-						$text = $text.substr($lang, 2);
-						break;
-					}
-				}
-			}
-			if($tolang == "zh-cn") {
-				$text = $text.$this->trad2simp($a{1});
-			}
-			else {
-				$text = $text.$this->simp2trad($a{1});
-			}
-		}
-
-		return $text;
-	}
-	
+	function autoConvert($text) {
+        if($this->getPreferredVariant() == "zh-cn") {
+            return $this->trad2simp($text);
+        }
+        else {
+            return $this->simp2trad($text);
+        }
+    }
+
     function getVariants() {
-        return array("zh_cn", "zh_tw");
+        return array("zh-cn", "zh-tw");
     }
 
 
-- 
2.20.1