jSite: First commit : verion 4.0 (written by Bombe)

[jSite.git] / src / de / todesbaum / util / io / ReplacingOutputStream.java

diff --git a/src/de/todesbaum/util/io/ReplacingOutputStream.java b/src/de/todesbaum/util/io/ReplacingOutputStream.java
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+++ b/src/de/todesbaum/util/io/ReplacingOutputStream.java
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+/*
+ * todesbaum-lib - 
+ * Copyright (C) 2006 David Roden
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package de.todesbaum.util.io;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+
+/**
+ * @author David Roden <droden@gmail.com>
+ * @version $Id: ReplacingOutputStream.java 431 2006-03-29 18:06:18Z bombe $
+ */
+public class ReplacingOutputStream extends FilterOutputStream {
+
+       private Map<String, String> replacements = new HashMap<String, String>();
+       private StringBuffer ringBuffer = new StringBuffer();
+       
+       /**
+        * @param out
+        */
+       public ReplacingOutputStream(OutputStream out) {
+               super(out);
+       }
+
+       public void addReplacement(String token, String value) {
+               replacements.put(token, value);
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public void write(int b) throws IOException {
+               ringBuffer.append((char) b);
+               Iterator<Entry<String, String>> entries = replacements.entrySet().iterator();
+               boolean found = false;
+               Entry<String, String> entry = null;
+               while (!found && entries.hasNext()) {
+                       entry = entries.next();
+                       if (entry.getKey().startsWith(ringBuffer.toString())) {
+                               found = true;
+                       }
+               }
+               if (!found) {
+                       String buffer = ringBuffer.toString();
+                       for (int index = 0, size = buffer.length(); index < size; index++) {
+                               super.write(buffer.charAt(index));
+                       }
+                       ringBuffer.setLength(0);
+               } else {
+                       if (entry.getKey().equals(ringBuffer.toString())) {
+                               String buffer = entry.getValue();
+                               for (int index = 0, size = buffer.length(); index < size; index++) {
+                                       super.write(buffer.charAt(index));
+                               }
+                               ringBuffer.setLength(0);
+                       }
+               }
+       }
+       
+}