/**
    * Copyright 2007 Google Inc.
    *
    * Licensed 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 com.tonicsystems.jarjar;
  
  import com.tonicsystems.jarjar.util.*;
  import java.io.*;
  import java.util.*;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipFile;
  import org.objectweb.asm.*;
  import org.objectweb.asm.Type;
  import org.objectweb.asm.commons.*;
  
  class DepFindVisitor extends RemappingClassAdapter
  {
      public DepFindVisitor(Map<String, String> classes, String source, DepHandler handler) throws IOException {
          super(null, new DepFindRemapper(classes, source, handler));
      }
  
      public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
          ((DepFindRemapper)remapper).setClassName(name);
          super.visit(version, access, name, signature, superName, interfaces);
      }
  
      private static class DepFindRemapper extends Remapper
      {
          private final Map<String, String> classes;
          private final String source;
          private final DepHandler handler;
          private PathClass curPathClass;
  
          public DepFindRemapper(Map<String, String> classes, String source, DepHandler handler) throws IOException {
              this.classes = classes;
              this.source = source;
              this.handler = handler;
          }
  
          public void setClassName(String name) {
              curPathClass = new PathClass(source, name);
          }
  
          public String map(String key) {
              try {
                  if (classes.containsKey(key)) {
                      String otherSource = classes.get(key);
                      if (!source.equals(otherSource)) {
                          // TODO: some escape mechanism?
                          handler.handle(curPathClass, new PathClass(otherSource, key));
                      }
                  }
              } catch (IOException e) {
                  throw new RuntimeIOException(e);
              }
              return null;
          }
      }
  }