Author: reto
Date: Thu Apr 8 09:08:57 2010
New Revision: 931841
URL: http://svn.apache.org/viewvc?rev=931841&view=rev
Log:
CLEREZZA-96: added ReplacingOutputStream
Added:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/main/java/org/apache/clerezza/utils/ReplacingOutputStream.java
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/test/java/org/apache/clerezza/utils/ReplacingOutputStreamTest.java
Added:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/main/java/org/apache/clerezza/utils/ReplacingOutputStream.java
URL:
http://svn.apache.org/viewvc/incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/main/java/org/apache/clerezza/utils/ReplacingOutputStream.java?rev=931841&view=auto
==============================================================================
---
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/main/java/org/apache/clerezza/utils/ReplacingOutputStream.java
(added)
+++
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/main/java/org/apache/clerezza/utils/ReplacingOutputStream.java
Thu Apr 8 09:08:57 2010
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.clerezza.utils;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * An OutputStream replacing a specified byte-sequence to another before
+ * writing to the undelying base stream.
+ *
+ * @author reto
+ */
+public class ReplacingOutputStream extends FilterOutputStream {
+
+ private byte[] replaceFrom;
+ private byte[] replaceTo;
+ private int posInFrom = 0;
+
+ /**
+ * Constructs a ReplacingOutputStream replacing replaceFrom with
replaceTo
+ *
+ * @param out The base outputream to which the data is to be written
after
+ * the replacement
+ * @param replaceFrom the byte-sequence to be replaced
+ * @param replaceTo the replacement byte sequence
+ */
+ public ReplacingOutputStream(OutputStream out, byte[] replaceFrom,
byte[] replaceTo) {
+ super(out);
+ this.replaceFrom = replaceFrom;
+ this.replaceTo = replaceTo;
+ }
+
+ @Override
+ public void write(int b) throws IOException {
+ if (b == replaceFrom[posInFrom]) {
+ posInFrom++;
+ if (posInFrom == replaceFrom.length) {
+ for (int i = 0; i < replaceTo.length; i++) {
+ super.write(replaceTo[i]);
+ }
+ posInFrom = 0;
+ }
+ } else {
+ for (int i = 0; i < posInFrom; i++) {
+ super.write(replaceFrom[i]);
+ }
+ posInFrom = 0;
+ super.write(b);
+ }
+ }
+
+ @Override
+ public void close() throws IOException {
+ if (posInFrom == replaceFrom.length) {
+ for (int i = 0; i < replaceTo.length; i++) {
+ super.write(replaceTo[i]);
+ }
+ posInFrom = 0;
+ }
+ super.close();
+ }
+}
Added:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/test/java/org/apache/clerezza/utils/ReplacingOutputStreamTest.java
URL:
http://svn.apache.org/viewvc/incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/test/java/org/apache/clerezza/utils/ReplacingOutputStreamTest.java?rev=931841&view=auto
==============================================================================
---
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/test/java/org/apache/clerezza/utils/ReplacingOutputStreamTest.java
(added)
+++
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.utils/src/test/java/org/apache/clerezza/utils/ReplacingOutputStreamTest.java
Thu Apr 8 09:08:57 2010
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.clerezza.utils;
+
+import java.io.ByteArrayOutputStream;
+import java.nio.charset.Charset;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ *
+ * @author reto
+ */
+public class ReplacingOutputStreamTest {
+
+ final static Charset UTF8 = Charset.forName("UTF-8");
+
+ @Test
+ public void simple() throws Exception {
+ final String orig = "hello testing world";
+ final ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ final ReplacingOutputStream raos = new
ReplacingOutputStream(baos,
+ "testing".getBytes(UTF8),
"tested".getBytes(UTF8));
+ raos.write(orig.getBytes(UTF8));
+ raos.flush();
+ final String result = new String(baos.toByteArray(), UTF8);
+ Assert.assertEquals("hello tested world", result);
+ }
+}
