* improve encoding detection of http service

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5337 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/htmlFilter/htmlFilterContentScraper.java

@@ -46,6 +46,7 @@ import javax.swing.event.EventListenerList;
 import de.anomic.crawler.HTTPLoader;
 import de.anomic.http.HttpClient;
 import de.anomic.http.httpRequestHeader;
+import de.anomic.plasma.plasmaParser;
 import de.anomic.server.serverCharBuffer;
 import de.anomic.server.serverFileUtils;
 import de.anomic.yacy.yacyURL;
@@ -487,7 +488,7 @@ public class htmlFilterContentScraper extends htmlFilterAbstractScraper implemen
         
         // scrape document to look up charset
         final htmlFilterInputStream htmlFilter = new htmlFilterInputStream(new ByteArrayInputStream(page),"UTF-8",new yacyURL("http://localhost", null),null,false);
-        final String charset = htmlFilter.detectCharset();
+        final String charset = plasmaParser.patchCharsetEncoding(htmlFilter.detectCharset());
         
         // scrape content
         final htmlFilterContentScraper scraper = new htmlFilterContentScraper(new yacyURL("http://localhost", null));

source/de/anomic/http/httpd.java

@@ -37,6 +37,7 @@ import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URLDecoder;
 import java.net.URLEncoder;
+import java.nio.charset.Charset;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.HashMap;
@@ -1310,7 +1311,7 @@ public final class httpd implements serverHandler, Cloneable {
         if (contentType == null) 
             contentType = "text/html; charset=UTF-8";
         else if (contentType.startsWith("text/") && contentType.toLowerCase().indexOf("charset=")==-1)
-            contentType +="; charset=UTF-8";
+            contentType +="; charset=" + Charset.defaultCharset().name();
         headers.put(httpHeader.CONTENT_TYPE, contentType);  
         if (contentLength > 0)   headers.put(httpResponseHeader.CONTENT_LENGTH, Long.toString(contentLength));
         //if (cookie != null)      headers.put(httpResponseHeader.SET_COOKIE, cookie);

source/de/anomic/http/httpdFileHandler.java

@@ -569,6 +569,7 @@ public final class httpdFileHandler {
                 String mimeType = mimeTable.getProperty(targetExt,"text/html");
                 final boolean zipContent = requestHeader.acceptGzip() && httpd.shallTransportZipped("." + conProp.getProperty("EXT",""));
                 if (path.endsWith("html") || 
+                        path.endsWith("htm") || 
                         path.endsWith("xml") || 
                         path.endsWith("rdf") || 
                         path.endsWith("rss") || 
@@ -701,7 +702,7 @@ public final class httpdFileHandler {
                 		fis.mark(1000);
                         // scrape document to look up charset
                         final htmlFilterInputStream htmlFilter = new htmlFilterInputStream(fis,"UTF-8",new yacyURL("http://localhost", null),null,false);
-                        final String charset = htmlFilter.detectCharset();
+                        final String charset = plasmaParser.patchCharsetEncoding(htmlFilter.detectCharset());
                         // reset position
                         fis.reset();
                         if(charset != null)

source/de/anomic/plasma/plasmaParser.java

@@ -350,8 +350,8 @@ public final class plasmaParser {
      */
     public static String patchCharsetEncoding(String encoding) {
         
-        // return a default encoding
+        // return the system default encoding
-    	if ((encoding == null) || (encoding.length() < 3)) return "ISO-8859-1";
+    	if ((encoding == null) || (encoding.length() < 3)) return Charset.defaultCharset().name();
     	
     	// trim encoding string
     	encoding = encoding.trim();
@@ -362,6 +362,7 @@ public final class plasmaParser {
     	if (encoding.startsWith("BIG")) return "Big5";
     	// all other names but such with "windows" use uppercase
     	if (encoding.startsWith("WINDOWS")) encoding = "windows" + encoding.substring(7);
+    	if (encoding.startsWith("MACINTOSH")) encoding = "MacRoman";
     	
     	// fix wrong fill characters
     	encoding = encoding.replaceAll("_", "-");