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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.android.apigenerator.enumfix;
import com.android.apigenerator.ApiClass;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.FieldNode;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/**
* This codes looks at all the android.jar in an SDK and use ASM to figure out when enums
* where introduced. This is a one time thing that creates the file
* /com/android/apichecker/generator/enums.xml which is then used to create the final API file.
*
*/
public class AndroidJarReader {
// this the last API until we switched to a new API format that included enum values.
private final static int MAX_API = 13;
private static final byte[] BUFFER = new byte[65535];
private final String mSdkFolder;
public AndroidJarReader(String sdkFolder) {
mSdkFolder = sdkFolder;
}
public Map<String, ApiClass> getEnumClasses() {
HashMap<String, ApiClass> map = new HashMap<String, ApiClass>();
// Get all the android.jar. They are in platforms-#
for (int apiLevel = 1 ; apiLevel <= MAX_API ; apiLevel++) {
try {
File jar = new File(mSdkFolder, "platforms/android-" + apiLevel + "/android.jar");
if (jar.exists() == false) {
System.err.println("Missing android.jar for API level " + apiLevel);
continue;
}
FileInputStream fis = new FileInputStream(jar);
ZipInputStream zis = new ZipInputStream(fis);
ZipEntry entry = zis.getNextEntry();
while (entry != null) {
String name = entry.getName();
if (name.endsWith(".class")) {
int index = 0;
do {
int size = zis.read(BUFFER, index, BUFFER.length - index);
if (size >= 0) {
index += size;
} else {
break;
}
} while (true);
byte[] b = new byte[index];
System.arraycopy(BUFFER, 0, b, 0, index);
ClassReader reader = new ClassReader(b);
ClassNode classNode = new ClassNode();
reader.accept(classNode, 0 /*flags*/);
if (classNode != null && classNode.superName != null &&
classNode.superName.equals("java/lang/Enum")) {
ApiClass theClass = addClass(map, classNode.name, apiLevel);
theClass.addSuperClass("java/lang/Enum", apiLevel);
List fields = classNode.fields;
for (Object f : fields) {
FieldNode fnode = (FieldNode) f;
if (fnode.desc.substring(1, fnode.desc.length() - 1).equals(classNode.name)) {
theClass.addField(fnode.name, apiLevel);
}
}
}
}
entry = zis.getNextEntry();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
}
return map;
}
private ApiClass addClass(HashMap<String, ApiClass> classes, String name, int apiLevel) {
ApiClass theClass = classes.get(name);
if (theClass == null) {
theClass = new ApiClass(name, apiLevel);
classes.put(name, theClass);
}
return theClass;
}
}
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