1 files changed, 121 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/depend/ClassFile.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/depend/ClassFile.java
new file mode 100644
index 00000000..858ce03e
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/depend/ClassFile.java
@@ -0,0 +1,121 @@
+/*
+ *  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.taskdefs.optional.depend;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Vector;
+
+import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ClassCPInfo;
+import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPool;
+import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPoolEntry;
+
+/**
+ * A ClassFile object stores information about a Java class. The class may
+ * be read from a DataInputStream.and written to a DataOutputStream. These
+ * are usually streams from a Java class file or a class file component of a
+ * Jar file.
+ *
+ */
+public class ClassFile {
+
+    /** The Magic Value that marks the start of a Java class file  */
+    private static final int CLASS_MAGIC = 0xCAFEBABE;
+
+    /** This class' constant pool.  */
+    private ConstantPool constantPool;
+
+    /** The class name for this class.  */
+    private String className;
+
+    /**
+     * Read the class from a data stream. This method takes an InputStream
+     * as input and parses the class from the stream. <p>
+     *
+     *
+     *
+     * @param stream an InputStream from which the class will be read
+     * @exception IOException if there is a problem reading from the given
+     *      stream.
+     * @exception ClassFormatError if the class cannot be parsed correctly
+     */
+    public void read(InputStream stream) throws IOException, ClassFormatError {
+        DataInputStream classStream = new DataInputStream(stream);
+
+        if (classStream.readInt() != CLASS_MAGIC) {
+            throw new ClassFormatError("No Magic Code Found "
+                + "- probably not a Java class file.");
+        }
+
+        // right we have a good looking class file.
+        /* int minorVersion = */ classStream.readUnsignedShort();
+        /* int majorVersion = */ classStream.readUnsignedShort();
+
+        // read the constant pool in and resolve it
+        constantPool = new ConstantPool();
+
+        constantPool.read(classStream);
+        constantPool.resolve();
+
+        /* int accessFlags = */ classStream.readUnsignedShort();
+        int thisClassIndex = classStream.readUnsignedShort();
+        /* int superClassIndex = */ classStream.readUnsignedShort();
+        ClassCPInfo classInfo
+            = (ClassCPInfo) constantPool.getEntry(thisClassIndex);
+        className  = classInfo.getClassName();
+    }
+
+
+    /**
+     * Get the classes which this class references.
+     *
+     * @return a vector of class names which this class references
+     */
+    public Vector<String> getClassRefs() {
+
+        Vector<String> classRefs = new Vector<String>();
+
+        final int size = constantPool.size();
+        for (int i = 0; i < size; ++i) {
+            ConstantPoolEntry entry = constantPool.getEntry(i);
+
+            if (entry != null
+                && entry.getTag() == ConstantPoolEntry.CONSTANT_CLASS) {
+                ClassCPInfo classEntry = (ClassCPInfo) entry;
+
+                if (!classEntry.getClassName().equals(className)) {
+                    classRefs.add(
+                        ClassFileUtils.convertSlashName(classEntry.getClassName()));
+                }
+            }
+        }
+
+        return classRefs;
+    }
+
+    /**
+     * Get the class' fully qualified name in dot format.
+     *
+     * @return the class name in dot format (eg. java.lang.Object)
+     */
+    public String getFullClassName() {
+        return ClassFileUtils.convertSlashName(className);
+    }
+}
+