*** empty log message ***

[phpeclipse.git] / net.sourceforge.phpeclipse.xml.ui / src / net / sourceforge / phpeclipse / xml / ui / internal / text / AbstractDocumentProvider.java

diff --git a/net.sourceforge.phpeclipse.xml.ui/src/net/sourceforge/phpeclipse/xml/ui/internal/text/AbstractDocumentProvider.java b/net.sourceforge.phpeclipse.xml.ui/src/net/sourceforge/phpeclipse/xml/ui/internal/text/AbstractDocumentProvider.java
new file mode 100644 (file)
index 0000000..1b3a58c
--- /dev/null
+++ b/net.sourceforge.phpeclipse.xml.ui/src/net/sourceforge/phpeclipse/xml/ui/internal/text/AbstractDocumentProvider.java
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2002-2004 Widespace, OU and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ *     Igor Malinin - initial contribution
+ *
+ * $Id: AbstractDocumentProvider.java,v 1.1 2004-09-02 18:28:03 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.xml.ui.internal.text;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.eclipse.jface.text.rules.IWhitespaceDetector;
+
+import net.sourceforge.phpeclipse.ui.editor.I18NDocumentProvider;
+
+
+/**
+ * 
+ * 
+ * @author Igor Malinin
+ */
+public abstract class AbstractDocumentProvider extends I18NDocumentProvider {
+       protected IWhitespaceDetector detector = new WhitespaceDetector();
+
+       /*
+        * @see org.eclipse.ui.editors.text.IStorageDocumentProvider#getDefaultEncoding()
+        */
+       public String getDefaultEncoding() {
+               return "UTF-8";
+       }
+
+       public String getDeclaredEncoding( InputStream in ) throws IOException {
+               if ( !in.markSupported() ) {
+                       in = new BufferedInputStream( in, 512 );
+               }
+
+               in.mark( 512 );
+               String encoding = super.getDeclaredEncoding( in );
+               if ( encoding != null ) {
+                       return encoding;
+               }
+
+               in.reset();
+
+               // check Prolog-Start <?xml
+               if ( !skipXMLDecl(in) ) {
+                       return null;
+               }
+
+               // detect 'encoding'
+               skipEncoding( in );
+
+               // read encoding
+               int delimiter;
+
+               while ( true ) {
+                       int ch = in.read();
+                       if ( ch < 0 ) {
+                               return null;
+                       }
+
+                       if ( detector.isWhitespace((char) ch) ) {
+                               continue;
+                       }
+
+                       if ( ch == '"' || ch == '\'' ) {
+                               delimiter = ch;
+                               break;
+                       }
+
+                       return null;
+               }
+
+               StringBuffer buf = new StringBuffer();
+
+               while ( true ) {
+                       int ch = in.read();
+                       if ( ch < 0 ) {
+                               return null;
+                       }
+
+                       if ( ch == delimiter ) {
+                               break;
+                       }
+
+                       buf.append( (char) ch );
+               }
+
+               return buf.toString();
+       }
+
+       private boolean skipXMLDecl( InputStream in ) throws IOException {
+               int ch = in.read();
+               if ( ch != '<' ) {
+                       return false;
+               }
+
+               ch = in.read();
+               if ( ch != '?' ) {
+                       return false;
+               }
+
+               ch = in.read();
+               if ( ch != 'x' ) {
+                       return false;
+               }
+
+               ch = in.read();
+               if ( ch != 'm' ) {
+                       return false;
+               }
+
+               ch = in.read();
+               if ( ch != 'l' ) {
+                       return false;
+               }
+
+               return true;
+       }
+
+       private boolean skipEncoding( InputStream in ) throws IOException {
+               int ch = in.read();
+
+               boolean whitespace = false;
+
+               while ( true ) {
+                       if ( ch < 0 ) {
+                               return false;
+                       }
+
+                       if ( detector.isWhitespace((char) ch) ) {
+                               ch = in.read();
+                               whitespace = true;
+                               continue;
+                       }
+
+                       if ( ch == '?' || ch == '<' ) {
+                               return false;
+                       }
+
+                       if ( ch != 'e' ) {
+                               ch = in.read();
+                               whitespace = false;
+                               continue;
+                       }
+
+                       if ( !whitespace ) {
+                               ch = in.read();
+                               continue;
+                       }
+
+                       if ( (ch = in.read()) == 'n' &&
+                                       (ch = in.read()) == 'c' &&
+                                       (ch = in.read()) == 'o' &&
+                                       (ch = in.read()) == 'd' &&
+                                       (ch = in.read()) == 'i' &&
+                                       (ch = in.read()) == 'n' &&
+                                       (ch = in.read()) == 'g' ) {
+                               break;
+                       }
+
+                       whitespace = false;
+               }
+
+               // '='
+               while ( true ) {
+                       ch = in.read();
+                       if ( ch < 0 ) {
+                               return false;
+                       }
+
+                       if ( detector.isWhitespace((char) ch) ) {
+                               continue;
+                       }
+
+                       if ( ch == '=' ) {
+                               break;
+                       }
+
+                       return false;
+               }
+
+               return true;
+       }
+}