1 files changed, 195 insertions, 0 deletions
diff --git a/maven-plugins/tags/maven-eclipse-compiler-1.0.2/src/main/java/org/apache/tuscany/maven/compiler/ClassLoaderNameEnvironment.java b/maven-plugins/tags/maven-eclipse-compiler-1.0.2/src/main/java/org/apache/tuscany/maven/compiler/ClassLoaderNameEnvironment.java
new file mode 100644
index 0000000000..bb38abad0d
--- /dev/null
+++ b/maven-plugins/tags/maven-eclipse-compiler-1.0.2/src/main/java/org/apache/tuscany/maven/compiler/ClassLoaderNameEnvironment.java
@@ -0,0 +1,195 @@
+/*
+ * 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.tuscany.maven.compiler;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
+import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
+import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
+import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
+import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
+
+/**
+ * An implementation of INameEnvironment based on a ClassLoader.
+ * 
+ * @version $Rev$ $Date$
+ */
+class ClassLoaderNameEnvironment implements INameEnvironment {
+    private final static char fileSeparator = System.getProperty("file.separator").charAt(0);
+    
+    private ClassLoader classLoader;
+    private List<String> sourceLocations;
+    private Map<String, File> sourceFiles;
+
+    ClassLoaderNameEnvironment(ClassLoader classLoader, List<String> sourceLocations) {
+        this.classLoader = classLoader;
+        this.sourceLocations = sourceLocations;
+        sourceFiles = new HashMap<String, File>();
+    }
+
+    public NameEnvironmentAnswer findType(char[][] compoundTypeName) {
+        StringBuffer className = new StringBuffer();
+        for (char[] name: compoundTypeName) {
+            if (className.length() != 0) {
+                className.append('.');
+            }
+            className.append(name);
+        }
+        return nameAnswer(className.toString());
+    }
+
+    public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName) {
+        StringBuffer className = new StringBuffer();
+        for (char[] name: packageName) {
+            if (className.length() != 0) {
+                className.append('.');
+            }
+            className.append(name);
+        }
+        if (className.length() != 0) {
+            className.append('.');
+        }
+        className.append(typeName);
+        return nameAnswer(className.toString());
+    }
+
+    public boolean isPackage(char[][] parentPackageName, char[] packageName) {
+        StringBuffer fullPackageName = new StringBuffer();
+        if (parentPackageName != null) {
+            for (char[] name: parentPackageName) {
+                if (fullPackageName.length() != 0) {
+                    fullPackageName.append('.');
+                }
+                fullPackageName.append(name);
+            }
+        }
+        if (fullPackageName.length() != 0) {
+            fullPackageName.append('.');
+        }
+        fullPackageName.append(packageName);
+        return isPackage(fullPackageName.toString());
+    }
+
+    public void cleanup() {
+    }
+
+    /**
+     * Returns the source file for the given class name.
+     * 
+     * @param className
+     * @return
+     */
+    private File sourceFile(String className) {
+        File sourceFile = (File)sourceFiles.get(className);
+        if (sourceFile != null) {
+            return sourceFile;
+        }
+        String sourceName = className.replace('.', fileSeparator) + ".java";
+        sourceFile = sourceFileInSourceLocations(sourceName);
+        sourceFiles.put(className, sourceFile);
+        return sourceFile;
+    }
+
+    /**
+     * Returns the source file for the given source path relative to the source locations.
+     * 
+     * @param className
+     * @return
+     */
+    private File sourceFileInSourceLocations(String relativePath) {
+        for (String sourceLocation : sourceLocations) {
+            File sourceFile = new File(sourceLocation, relativePath);
+            if (sourceFile.exists()) {
+                return sourceFile;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Returns true if the given name is a package name.
+     * 
+     * @param name
+     * @return
+     */
+    private boolean isPackage(String name) {
+        if (sourceFile(name) != null) {
+            return false;
+        }
+        String resourceName = '/' + name.replace('.', '/') + ".class";
+        InputStream is = classLoader.getResourceAsStream(resourceName);
+        if (is == null) {
+            return true;
+        } else {
+            try {
+                is.close();
+            } catch (IOException e) {}
+            return false;
+        }
+    }
+
+    /**
+     * Find the NameAnswer for by the given class name.
+     * 
+     * @param className
+     * @return
+     */
+    private NameEnvironmentAnswer nameAnswer(String className) {
+        try {
+            File sourceFile = sourceFile(className);
+            if (sourceFile != null) {
+                ICompilationUnit compilationUnit = new FileCompilationUnit(sourceFile.getAbsolutePath(), className);
+                return new NameEnvironmentAnswer(compilationUnit, null);
+            }
+
+            String resourceName = className.replace('.', '/') + ".class";
+            InputStream is = classLoader.getResourceAsStream(resourceName);
+            if (is == null) {
+                return null;
+            }
+            ByteArrayOutputStream bos = new ByteArrayOutputStream();
+            byte[] b = new byte[2048];
+            for (;;) {
+                int n = is.read(b);
+                if (n <= 0) {
+                    break;
+                }
+                bos.write(b, 0, n);
+            }
+            byte[] classBytes = bos.toByteArray();
+            
+            ClassFileReader classFileReader = new ClassFileReader(classBytes, className.toCharArray(), true);
+            return new NameEnvironmentAnswer(classFileReader, null);
+            
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        } catch (ClassFormatException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+}