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make general purpose Decoder for Value
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| @@ -0,0 +1,147 @@ | ||
| /* | ||
| * Copyright (C) 2022 github.com/REAndroid | ||
| * | ||
| * 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.reandroid.arsc.decoder; | ||
|
|
||
| import com.reandroid.apk.AndroidFrameworks; | ||
| import com.reandroid.apk.FrameworkApk; | ||
| import com.reandroid.arsc.ApkFile; | ||
| import com.reandroid.arsc.chunk.MainChunk; | ||
| import com.reandroid.arsc.chunk.PackageBlock; | ||
| import com.reandroid.arsc.chunk.TableBlock; | ||
| import com.reandroid.arsc.chunk.xml.AndroidManifestBlock; | ||
| import com.reandroid.arsc.chunk.xml.ResXmlDocument; | ||
| import com.reandroid.arsc.group.EntryGroup; | ||
| import com.reandroid.arsc.value.AttributeValue; | ||
| import com.reandroid.arsc.value.Value; | ||
| import com.reandroid.arsc.value.ValueType; | ||
| import com.reandroid.common.EntryStore; | ||
|
|
||
| import java.io.IOException; | ||
|
|
||
| public class Decoder { | ||
| private final EntryStore entryStore; | ||
| private int currentPackageId; | ||
| public Decoder(EntryStore entryStore, int currentPackageId){ | ||
| this.entryStore = entryStore; | ||
| this.currentPackageId = currentPackageId; | ||
| } | ||
| public String decodeResourceName(int resourceId){ | ||
| EntryGroup entryGroup = getEntryStore().getEntryGroup(resourceId); | ||
| if(entryGroup!=null){ | ||
| return entryGroup.getSpecName(); | ||
| } | ||
| return null; | ||
| } | ||
| public String decodeValue(Value value){ | ||
| if(value==null){ | ||
| return null; | ||
| } | ||
| ValueType valueType = value.getValueType(); | ||
| if(valueType == ValueType.STRING){ | ||
| return value.getValueAsString(); | ||
| } | ||
| return ValueDecoder.decode(getEntryStore(), getCurrentPackageId(), value); | ||
| } | ||
| public String decodeAttributeValue(AttributeValue attributeValue){ | ||
| if(attributeValue == null){ | ||
| return null; | ||
| } | ||
| return ValueDecoder.decode(getEntryStore(), getCurrentPackageId(), attributeValue); | ||
| } | ||
| private EntryStore getEntryStore() { | ||
| return entryStore; | ||
| } | ||
| public int getCurrentPackageId() { | ||
| return currentPackageId; | ||
| } | ||
| public void setCurrentPackageId(int currentPackageId) { | ||
| this.currentPackageId = currentPackageId; | ||
| } | ||
|
|
||
| public static Decoder create(ResXmlDocument resXmlDocument){ | ||
| MainChunk mainChunk = resXmlDocument.getMainChunk(); | ||
| if(mainChunk == null){ | ||
| return getNullEntryStoreDecoder(); | ||
| } | ||
| ApkFile apkFile = mainChunk.getApkFile(); | ||
| if(apkFile == null){ | ||
| return getNullEntryStoreDecoder(); | ||
| } | ||
| TableBlock tableBlock = apkFile.getTableBlock(); | ||
| if(tableBlock == null){ | ||
| return getNullEntryStoreDecoder(); | ||
| } | ||
| AndroidManifestBlock manifestBlock = apkFile.getAndroidManifestBlock(); | ||
| if(manifestBlock!=null){ | ||
| int currentPackageId = manifestBlock.guessCurrentPackageId(); | ||
| if(currentPackageId!=0){ | ||
| return create(tableBlock, currentPackageId); | ||
| } | ||
| } | ||
| return create(tableBlock); | ||
| } | ||
| public static Decoder create(TableBlock tableBlock){ | ||
| if(tableBlock.getFrameWorks().size()==0){ | ||
| tableBlock.addFramework(getFramework()); | ||
| } | ||
| int currentPackageId; | ||
| PackageBlock packageBlock = tableBlock.pickOne(); | ||
| if(packageBlock!=null){ | ||
| currentPackageId = packageBlock.getId(); | ||
| }else { | ||
| // 0x7f most common | ||
| currentPackageId = 0x7f; | ||
| } | ||
| return create(tableBlock, currentPackageId); | ||
| } | ||
| public static Decoder create(TableBlock tableBlock, int currentPackageId){ | ||
| if(tableBlock.getFrameWorks().size()==0){ | ||
| TableBlock framework = getFramework(); | ||
| if(framework!=null){ | ||
| PackageBlock packageBlock = framework.pickOne(); | ||
| if(packageBlock!=null && packageBlock.getId() != currentPackageId){ | ||
| tableBlock.addFramework(framework); | ||
| } | ||
| } | ||
| } | ||
| return new Decoder(tableBlock, currentPackageId); | ||
| } | ||
| private static TableBlock getFramework(){ | ||
| try { | ||
| FrameworkApk frameworkApk = AndroidFrameworks.getCurrent(); | ||
| if(frameworkApk == null){ | ||
| frameworkApk = AndroidFrameworks.getLatest(); | ||
| AndroidFrameworks.setCurrent(frameworkApk); | ||
| } | ||
| return frameworkApk.getTableBlock(); | ||
| } catch (IOException ignored) { | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| public static Decoder getNullEntryStoreDecoder(){ | ||
| if(NULL_ENTRY_STORE_DECODER!=null){ | ||
| return NULL_ENTRY_STORE_DECODER; | ||
| } | ||
| synchronized (Decoder.class){ | ||
| TableBlock tableBlock = new TableBlock(); | ||
| Decoder decoder = new Decoder(tableBlock, 0x7f); | ||
| NULL_ENTRY_STORE_DECODER = decoder; | ||
| return decoder; | ||
| } | ||
| } | ||
| private static Decoder NULL_ENTRY_STORE_DECODER; | ||
| } |
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