1 files changed, 142 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/ExpandProperties.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/ExpandProperties.java
new file mode 100644
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+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/ExpandProperties.java
@@ -0,0 +1,142 @@
+/*
+ *  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.tools.ant.filters;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.util.Properties;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.PropertyHelper;
+import org.apache.tools.ant.property.GetProperty;
+import org.apache.tools.ant.property.ParseProperties;
+import org.apache.tools.ant.types.PropertySet;
+
+/**
+ * Expands Ant properties, if any, in the data.
+ * <p>
+ * Example:<br>
+ * <pre>&lt;expandproperties/&gt;</pre>
+ * Or:
+ * <pre>&lt;filterreader
+ *    classname=&quot;org.apache.tools.ant.filters.ExpandProperties&quot;/&gt;</pre>
+ *
+ */
+public final class ExpandProperties
+    extends BaseFilterReader
+    implements ChainableReader {
+
+    private static final int EOF = -1;
+
+    private char[] buffer;
+    private int index;
+    private PropertySet propertySet;
+
+    /**
+     * Constructor for "dummy" instances.
+     *
+     * @see BaseFilterReader#BaseFilterReader()
+     */
+    public ExpandProperties() {
+        super();
+    }
+
+    /**
+     * Creates a new filtered reader.
+     *
+     * @param in A Reader object providing the underlying stream.
+     *           Must not be <code>null</code>.
+     */
+    public ExpandProperties(final Reader in) {
+        super(in);
+    }
+
+    /**
+     * Restrict the expanded properties using a PropertySet.
+     * @param propertySet replacement lookup
+     */
+    public void add(PropertySet propertySet) {
+        if (this.propertySet != null) {
+            throw new BuildException("expandproperties filter accepts only one propertyset");
+        }
+        this.propertySet = propertySet;
+    }
+
+    /**
+     * Returns the next character in the filtered stream. The original
+     * stream is first read in fully, and the Ant properties are expanded.
+     * The results of this expansion are then queued so they can be read
+     * character-by-character.
+     *
+     * @return the next character in the resulting stream, or -1
+     * if the end of the resulting stream has been reached
+     *
+     * @exception IOException if the underlying stream throws an IOException
+     * during reading
+     */
+    public int read() throws IOException {
+        if (index > EOF) {
+            if (buffer == null) {
+                String data = readFully();
+                Project project = getProject();
+                GetProperty getProperty;
+                if (propertySet == null) {
+                    getProperty = PropertyHelper.getPropertyHelper(project);
+                } else {
+                    final Properties props = propertySet.getProperties();
+                    getProperty = new GetProperty() {
+
+                        public Object getProperty(String name) {
+                            return props.getProperty(name);
+                        }
+                    };
+                }
+                Object expanded = new ParseProperties(project, PropertyHelper
+                                                      .getPropertyHelper(project)
+                                                      .getExpanders(),
+                                                      getProperty)
+                    .parseProperties(data);
+                buffer = expanded == null ? new char[0]
+                    : expanded.toString().toCharArray();
+            }
+            if (index < buffer.length) {
+                return buffer[index++];
+            }
+            index = EOF;
+        }
+        return EOF;
+    }
+
+    /**
+     * Creates a new ExpandProperties filter using the passed in
+     * Reader for instantiation.
+     *
+     * @param rdr A Reader object providing the underlying stream.
+     *            Must not be <code>null</code>.
+     *
+     * @return a new filter based on this configuration, but filtering
+     *         the specified reader
+     */
+    public Reader chain(final Reader rdr) {
+        ExpandProperties newFilter = new ExpandProperties(rdr);
+        newFilter.setProject(getProject());
+        newFilter.add(propertySet);
+        return newFilter;
+    }
+}