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create: Multi-purpose FixedLengthString block

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This commit is contained in:
REAndroid 2022-12-29 05:57:46 -05:00
parent 34b101f989
commit bb1fe20f93
4 changed files with 112 additions and 113 deletions
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49
src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
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@ -15,35 +15,34 @@
*/
package com.reandroid.lib.arsc.chunk;
import com.reandroid.lib.arsc.array.LibraryInfoArray;
import com.reandroid.lib.arsc.array.PackageArray;
import com.reandroid.lib.arsc.array.SpecTypePairArray;
import com.reandroid.lib.arsc.base.Block;
import com.reandroid.lib.arsc.container.PackageLastBlocks;
import com.reandroid.lib.arsc.container.SingleBlockContainer;
import com.reandroid.lib.arsc.container.SpecTypePair;
import com.reandroid.lib.arsc.group.EntryGroup;
import com.reandroid.lib.arsc.io.BlockLoad;
import com.reandroid.lib.arsc.io.BlockReader;
import com.reandroid.lib.arsc.item.IntegerItem;
import com.reandroid.lib.arsc.item.PackageName;
import com.reandroid.lib.arsc.item.ReferenceItem;
import com.reandroid.lib.arsc.pool.SpecStringPool;
import com.reandroid.lib.arsc.pool.TableStringPool;
import com.reandroid.lib.arsc.pool.TypeStringPool;
import com.reandroid.lib.arsc.value.EntryBlock;
import com.reandroid.lib.arsc.value.LibraryInfo;
import com.reandroid.lib.json.JSONConvert;
import com.reandroid.lib.json.JSONObject;
import com.reandroid.lib.arsc.array.LibraryInfoArray;
import com.reandroid.lib.arsc.array.SpecTypePairArray;
import com.reandroid.lib.arsc.base.Block;
import com.reandroid.lib.arsc.container.PackageLastBlocks;
import com.reandroid.lib.arsc.container.SingleBlockContainer;
import com.reandroid.lib.arsc.container.SpecTypePair;
import com.reandroid.lib.arsc.group.EntryGroup;
import com.reandroid.lib.arsc.io.BlockLoad;
import com.reandroid.lib.arsc.io.BlockReader;
import com.reandroid.lib.arsc.item.FixedLengthString;
import com.reandroid.lib.arsc.item.IntegerItem;
import com.reandroid.lib.arsc.item.ReferenceItem;
import com.reandroid.lib.arsc.pool.SpecStringPool;
import com.reandroid.lib.arsc.pool.TableStringPool;
import com.reandroid.lib.arsc.pool.TypeStringPool;
import com.reandroid.lib.arsc.value.EntryBlock;
import com.reandroid.lib.arsc.value.LibraryInfo;
import com.reandroid.lib.json.JSONConvert;
import com.reandroid.lib.json.JSONObject;
import java.io.IOException;
import java.util.*;
import java.io.IOException;
import java.util.*;
public class PackageBlock extends BaseChunk
public class PackageBlock extends BaseChunk
implements BlockLoad, JSONConvert<JSONObject>, Comparable<PackageBlock> {
private final IntegerItem mPackageId;
private final PackageName mPackageName;
private final FixedLengthString mPackageName;
private final IntegerItem mTypeStringPoolOffset;
private final IntegerItem mTypeStringPoolCount;
@ -66,7 +65,7 @@ public class PackageBlock extends BaseChunk
public PackageBlock() {
super(ChunkType.PACKAGE, 3);
this.mPackageId=new IntegerItem();
this.mPackageName=new PackageName();
this.mPackageName = new FixedLengthString(256);
this.mTypeStringPoolOffset = new IntegerItem();
this.mTypeStringPoolCount = new IntegerItem();

85
src/main/java/com/reandroid/lib/arsc/item/FixedLengthString.java Normal file
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@ -0,0 +1,85 @@
/*
* 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.lib.arsc.item;
import com.reandroid.lib.arsc.io.BlockReader;
import java.nio.charset.StandardCharsets;
public class FixedLengthString extends StringItem{
private final int bytesLength;
public FixedLengthString(int bytesLength){
super(true);
this.bytesLength=bytesLength;
setBytesLength(bytesLength);
}
@Override
byte[] encodeString(String str){
if(str==null){
return new byte[bytesLength];
}
byte[] bts=getUtf16Bytes(str);
byte[] results=new byte[bytesLength];
int len=bts.length;
if(len>bytesLength){
len=bytesLength;
}
System.arraycopy(bts, 0, results, 0, len);
return results;
}
@Override
String decodeString(){
return decodeUtf16Bytes(getBytesInternal());
}
@Override
public StyleItem getStyle(){
return null;
}
@Override
int calculateReadLength(BlockReader reader){
return bytesLength;
}
private static String decodeUtf16Bytes(byte[] bts){
if(isNullBytes(bts)){
return null;
}
int len=getEndNullPosition(bts);
return new String(bts,0, len, StandardCharsets.UTF_16LE);
}
private static int getEndNullPosition(byte[] bts){
int max=bts.length;
int result=0;
boolean found=false;
for(int i=1; i<max;i++){
byte b0=bts[i-1];
byte b1=bts[i];
if(b0==0 && b1==0){
if(!found){
result=i;
found=true;
}else if(result<i-1){
return result;
}
}else {
found=false;
}
}
if(!found){
return max;
}
return result;
}
}

85
src/main/java/com/reandroid/lib/arsc/item/PackageName.java
View File

@ -1,85 +0,0 @@
/*
* 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.lib.arsc.item;
import com.reandroid.lib.arsc.io.BlockReader;
import java.nio.charset.StandardCharsets;
public class PackageName extends StringItem {
public PackageName() {
super(true);
setBytesLength(BYTES_LENGTH);
}
@Override
byte[] encodeString(String str){
if(str==null){
return new byte[BYTES_LENGTH];
}
byte[] bts=getUtf16Bytes(str);
byte[] results=new byte[BYTES_LENGTH];
int len=bts.length;
if(len>BYTES_LENGTH){
len=BYTES_LENGTH;
}
System.arraycopy(bts, 0, results, 0, len);
return results;
}
@Override
String decodeString(){
return decodeUtf16Bytes(getBytesInternal());
}
@Override
public StyleItem getStyle(){
return null;
}
@Override
int calculateReadLength(BlockReader reader){
return BYTES_LENGTH;
}
private static String decodeUtf16Bytes(byte[] bts){
if(isNullBytes(bts)){
return null;
}
int len=getEndNullPosition(bts);
return new String(bts,0, len, StandardCharsets.UTF_16LE);
}
private static int getEndNullPosition(byte[] bts){
int max=bts.length;
int result=0;
boolean found=false;
for(int i=1; i<max;i++){
byte b0=bts[i-1];
byte b1=bts[i];
if(b0==0 && b1==0){
if(!found){
result=i;
found=true;
}else if(result<i-1){
return result;
}
}else {
found=false;
}
}
if(!found){
return max;
}
return result;
}
private static final int BYTES_LENGTH=256;
}

6
src/main/java/com/reandroid/lib/arsc/value/LibraryInfo.java
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@ -18,8 +18,8 @@ package com.reandroid.lib.arsc.value;
import com.reandroid.lib.arsc.base.Block;
import com.reandroid.lib.arsc.base.BlockCounter;
import com.reandroid.lib.arsc.io.BlockReader;
import com.reandroid.lib.arsc.item.FixedLengthString;
import com.reandroid.lib.arsc.item.IntegerItem;
import com.reandroid.lib.arsc.item.PackageName;
import com.reandroid.lib.json.JSONConvert;
import com.reandroid.lib.json.JSONObject;
@ -28,12 +28,12 @@ import java.io.OutputStream;
public class LibraryInfo extends Block implements JSONConvert<JSONObject> {
private final IntegerItem mPackageId;
private final PackageName mPackageName;
private final FixedLengthString mPackageName;
public LibraryInfo(){
super();
this.mPackageId=new IntegerItem();
this.mPackageName=new PackageName();
this.mPackageName = new FixedLengthString(256);
mPackageId.setIndex(0);
mPackageId.setParent(this);
mPackageName.setIndex(1);