[sling-org-apache-sling-scripting-thymeleaf] 13/27: embed CaptureResponseWrapper from Scripting Core and use released version

[ro...@apache.org]

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rombert pushed a commit to annotated tag org.apache.sling.scripting.thymeleaf-0.0.6
in repository https://gitbox.apache.org/repos/asf/sling-org-apache-sling-scripting-thymeleaf.git

commit ab4b6b91731868e71563e2e25334dbd6f47f9a2b
Author: Oliver Lietz <ol...@apache.org>
AuthorDate: Fri Feb 13 12:41:58 2015 +0000

    embed CaptureResponseWrapper from Scripting Core and use released version
    
    git-svn-id: https://svn.apache.org/repos/asf/sling/trunk/contrib/scripting/thymeleaf@1659543 13f79535-47bb-0310-9956-ffa450edef68
---
 pom.xml                                            |   2 +-
 .../core/servlet/CaptureResponseWrapper.java       | 112 +++++++++++++++++++++
 2 files changed, 113 insertions(+), 1 deletion(-)

diff --git a/pom.xml b/pom.xml
index 08bd192..c212010 100644
--- a/pom.xml
+++ b/pom.xml
@@ -88,7 +88,7 @@
     <dependency>
       <groupId>org.apache.sling</groupId>
       <artifactId>org.apache.sling.scripting.core</artifactId>
-      <version>2.0.29-SNAPSHOT</version>
+      <version>2.0.28</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
diff --git a/src/main/java/org/apache/sling/scripting/core/servlet/CaptureResponseWrapper.java b/src/main/java/org/apache/sling/scripting/core/servlet/CaptureResponseWrapper.java
new file mode 100644
index 0000000..ccf5bd0
--- /dev/null
+++ b/src/main/java/org/apache/sling/scripting/core/servlet/CaptureResponseWrapper.java
@@ -0,0 +1,112 @@
+/*
+ * 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.sling.scripting.core.servlet;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletResponseWrapper;
+
+/**
+ * Extends the HttpServletResponse to wrap the response and capture the results.
+ */
+public final class CaptureResponseWrapper extends HttpServletResponseWrapper {
+
+    private boolean isBinaryResponse = false;
+
+    private PrintWriter writer;
+
+    private StringWriter stringWriter;
+
+    /**
+     * Construct a new CaptureResponseWrapper.
+     *
+     * @param response the response to wrap
+     */
+    public CaptureResponseWrapper(HttpServletResponse response) {
+        super(response);
+    }
+
+    /**
+     * Returns true if the response is binary.
+     *
+     * @return
+     */
+    public boolean isBinaryResponse() {
+        return isBinaryResponse;
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see javax.servlet.ServletResponseWrapper#flushBuffer()
+     */
+    @Override
+    public void flushBuffer() throws IOException {
+        if (isBinaryResponse()) {
+            getResponse().getOutputStream().flush();
+        } else {
+            writer.flush();
+        }
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see javax.servlet.ServletResponseWrapper#getOutputStream()
+     */
+    @Override
+    public ServletOutputStream getOutputStream() throws IOException {
+        if (writer != null) {
+            throw new IOException("'getWriter()' has already been invoked for a character data response.");
+        }
+        isBinaryResponse = true;
+        return getResponse().getOutputStream();
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see javax.servlet.ServletResponseWrapper#getWriter()
+     */
+    @Override
+    public PrintWriter getWriter() throws IOException {
+        if (writer != null) {
+            return writer;
+        }
+        if (isBinaryResponse) {
+            throw new IOException("'getOutputStream()' has already been invoked for a binary data response.");
+        }
+        stringWriter = new StringWriter();
+        writer = new PrintWriter(stringWriter);
+        return writer;
+    }
+
+    /**
+     *
+     * @return the captured character response data
+     * @throws IOException if no character response data captured
+     */
+    public String getCapturedCharacterResponse() throws IOException {
+        if (stringWriter == null) {
+            throw new IOException("no character response data captured");
+        }
+        writer.flush();
+        return stringWriter.toString();
+    }
+
+}

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