| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php |
| * |
| * 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.ide.eclipse.adt.internal.editors.binaryxml; |
| |
| import org.eclipse.core.runtime.QualifiedName; |
| import org.eclipse.core.runtime.content.IContentDescriber; |
| import org.eclipse.core.runtime.content.IContentDescription; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| |
| /** |
| * A content describer for Android binary xml files |
| * |
| * <p> |
| * This class referenced by the "describer" configuration element in |
| * extensions to the <code>org.eclipse.core.runtime.contentTypes</code> |
| * extension point. |
| * </p> |
| * |
| * References : |
| * <a>http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob; |
| * f=include/utils/ResourceTypes.h</a> |
| * |
| */ |
| public class BinaryXMLDescriber implements IContentDescriber { |
| |
| private static final int RES_XML_HEADER_SIZE = 8; |
| private final static short RES_XML_TYPE = 0x0003; |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.runtime.content.IContentDescriber#describe(java.io. |
| * InputStream, org.eclipse.core.runtime.content.IContentDescription) |
| */ |
| @Override |
| public int describe(InputStream contents, IContentDescription description) throws IOException { |
| int status = INVALID; |
| int length = 8; |
| byte[] bytes = new byte[length]; |
| if (contents.read(bytes, 0, length) == length) { |
| ByteBuffer buf = ByteBuffer.wrap(bytes); |
| buf.order(ByteOrder.LITTLE_ENDIAN); |
| short type = buf.getShort(); |
| short headerSize = buf.getShort(); |
| int size = buf.getInt(); // chunk size |
| if (type == RES_XML_TYPE && headerSize == RES_XML_HEADER_SIZE) { |
| status = VALID; |
| } |
| } |
| return status; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see |
| * org.eclipse.core.runtime.content.IContentDescriber#getSupportedOptions() |
| */ |
| @Override |
| public QualifiedName[] getSupportedOptions() { |
| return new QualifiedName[0]; |
| } |
| |
| } |