mirror of
https://github.com/revanced/Apktool.git
synced 2025-05-01 06:34:25 +02:00
328 lines
10 KiB
Java
328 lines
10 KiB
Java
/**
|
|
* Copyright 2011 Ryszard Wiśniewski <brut.alll@gmail.com>
|
|
*
|
|
* 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 brut.androlib.res.decoder;
|
|
|
|
import brut.androlib.res.AndrolibResources;
|
|
import brut.androlib.res.xml.ResXmlEncoders;
|
|
import brut.util.ExtDataInput;
|
|
import java.io.IOException;
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.charset.*;
|
|
import java.util.logging.Level;
|
|
import java.util.logging.Logger;
|
|
|
|
/**
|
|
* @author Ryszard Wiśniewski <brut.alll@gmail.com>
|
|
* @author Dmitry Skiba
|
|
*
|
|
* Block of strings, used in binary xml and arsc.
|
|
*
|
|
* TODO:
|
|
* - implement get()
|
|
*
|
|
*/
|
|
public class StringBlock {
|
|
|
|
/**
|
|
* Reads whole (including chunk type) string block from stream.
|
|
* Stream must be at the chunk type.
|
|
*/
|
|
public static StringBlock read(ExtDataInput reader) throws IOException {
|
|
reader.skipCheckInt(CHUNK_TYPE);
|
|
int chunkSize = reader.readInt();
|
|
int stringCount = reader.readInt();
|
|
int styleOffsetCount = reader.readInt();
|
|
int flags = reader.readInt();
|
|
int stringsOffset = reader.readInt();
|
|
int stylesOffset = reader.readInt();
|
|
|
|
StringBlock block = new StringBlock();
|
|
block.m_isUTF8 = (flags & UTF8_FLAG) != 0;
|
|
block.m_stringOffsets = reader.readIntArray(stringCount);
|
|
if (styleOffsetCount != 0) {
|
|
block.m_styleOffsets = reader.readIntArray(styleOffsetCount);
|
|
}
|
|
{
|
|
int size = ((stylesOffset == 0) ? chunkSize : stylesOffset) - stringsOffset;
|
|
if ((size % 4) != 0) {
|
|
throw new IOException("String data size is not multiple of 4 (" + size + ").");
|
|
}
|
|
block.m_strings = new byte[size];
|
|
reader.readFully(block.m_strings);
|
|
}
|
|
if (stylesOffset != 0) {
|
|
int size = (chunkSize - stylesOffset);
|
|
if ((size % 4) != 0) {
|
|
throw new IOException("Style data size is not multiple of 4 (" + size + ").");
|
|
}
|
|
block.m_styles = reader.readIntArray(size / 4);
|
|
}
|
|
|
|
return block;
|
|
}
|
|
|
|
/**
|
|
* Returns number of strings in block.
|
|
*/
|
|
public int getCount() {
|
|
return m_stringOffsets != null
|
|
? m_stringOffsets.length
|
|
: 0;
|
|
}
|
|
|
|
/**
|
|
* Returns raw string (without any styling information) at specified index.
|
|
*/
|
|
public String getString(int index) {
|
|
if (index < 0
|
|
|| m_stringOffsets == null
|
|
|| index >= m_stringOffsets.length) {
|
|
return null;
|
|
}
|
|
int offset = m_stringOffsets[index];
|
|
int length;
|
|
|
|
if (! m_isUTF8) {
|
|
length = getShort(m_strings, offset) * 2;
|
|
offset += 2;
|
|
} else {
|
|
offset += getVarint(m_strings, offset)[1];
|
|
int[] varint = getVarint(m_strings, offset);
|
|
offset += varint[1];
|
|
length = varint[0];
|
|
}
|
|
return decodeString(offset, length);
|
|
}
|
|
|
|
/**
|
|
* Not yet implemented.
|
|
*
|
|
* Returns string with style information (if any).
|
|
*/
|
|
public CharSequence get(int index) {
|
|
return getString(index);
|
|
}
|
|
|
|
/**
|
|
* Returns string with style tags (html-like).
|
|
*/
|
|
public String getHTML(int index) {
|
|
String raw = getString(index);
|
|
if (raw == null) {
|
|
return raw;
|
|
}
|
|
int[] style = getStyle(index);
|
|
if (style == null) {
|
|
return ResXmlEncoders.escapeXmlChars(raw);
|
|
}
|
|
StringBuilder html = new StringBuilder(raw.length() + 32);
|
|
int[] opened = new int[style.length / 3];
|
|
int offset = 0, depth = 0;
|
|
while (true) {
|
|
int i = -1, j;
|
|
for (j = 0; j != style.length; j += 3) {
|
|
if (style[j + 1] == -1) {
|
|
continue;
|
|
}
|
|
if (i == -1 || style[i + 1] > style[j + 1]) {
|
|
i = j;
|
|
}
|
|
}
|
|
int start = ((i != -1) ? style[i + 1] : raw.length());
|
|
for (j = depth - 1; j >= 0; j--) {
|
|
int last = opened[j];
|
|
int end = style[last + 2];
|
|
if (end >= start) {
|
|
break;
|
|
}
|
|
if (offset <= end) {
|
|
html.append(ResXmlEncoders.escapeXmlChars(
|
|
raw.substring(offset, end + 1)));
|
|
offset = end + 1;
|
|
}
|
|
outputStyleTag(getString(style[last]), html, true);
|
|
}
|
|
depth = j + 1;
|
|
if (offset < start) {
|
|
html.append(ResXmlEncoders.escapeXmlChars(
|
|
raw.substring(offset, start)));
|
|
offset = start;
|
|
}
|
|
if (i == -1) {
|
|
break;
|
|
}
|
|
outputStyleTag(getString(style[i]), html, false);
|
|
style[i + 1] = -1;
|
|
opened[depth++] = i;
|
|
}
|
|
return html.toString();
|
|
}
|
|
|
|
private void outputStyleTag(String tag, StringBuilder builder,
|
|
boolean close) {
|
|
builder.append('<');
|
|
if (close) {
|
|
builder.append('/');
|
|
}
|
|
|
|
int pos = tag.indexOf(';');
|
|
if (pos == -1) {
|
|
builder.append(tag);
|
|
} else {
|
|
builder.append(tag.substring(0, pos));
|
|
if (! close) {
|
|
boolean loop = true;
|
|
while (loop) {
|
|
int pos2 = tag.indexOf('=', pos + 1);
|
|
builder.append(' ').append(tag.substring(pos + 1, pos2))
|
|
.append("=\"");
|
|
pos = tag.indexOf(';', pos2 + 1);
|
|
|
|
String val;
|
|
if (pos != -1) {
|
|
val = tag.substring(pos2 + 1, pos);
|
|
} else {
|
|
loop = false;
|
|
val = tag.substring(pos2 + 1);
|
|
}
|
|
|
|
builder.append(ResXmlEncoders.escapeXmlChars(val))
|
|
.append('"');
|
|
}
|
|
}
|
|
}
|
|
builder.append('>');
|
|
}
|
|
|
|
/**
|
|
* Finds index of the string.
|
|
* Returns -1 if the string was not found.
|
|
*/
|
|
public int find(String string) {
|
|
if (string == null) {
|
|
return -1;
|
|
}
|
|
for (int i = 0; i != m_stringOffsets.length; ++i) {
|
|
int offset = m_stringOffsets[i];
|
|
int length = getShort(m_strings, offset);
|
|
if (length != string.length()) {
|
|
continue;
|
|
}
|
|
int j = 0;
|
|
for (; j != length; ++j) {
|
|
offset += 2;
|
|
if (string.charAt(j) != getShort(m_strings, offset)) {
|
|
break;
|
|
}
|
|
}
|
|
if (j == length) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
///////////////////////////////////////////// implementation
|
|
private StringBlock() {
|
|
}
|
|
|
|
/**
|
|
* Returns style information - array of int triplets,
|
|
* where in each triplet:
|
|
* * first int is index of tag name ('b','i', etc.)
|
|
* * second int is tag start index in string
|
|
* * third int is tag end index in string
|
|
*/
|
|
private int[] getStyle(int index) {
|
|
if (m_styleOffsets == null || m_styles == null
|
|
|| index >= m_styleOffsets.length) {
|
|
return null;
|
|
}
|
|
int offset = m_styleOffsets[index] / 4;
|
|
int style[];
|
|
{
|
|
int count = 0;
|
|
for (int i = offset; i < m_styles.length; ++i) {
|
|
if (m_styles[i] == -1) {
|
|
break;
|
|
}
|
|
count += 1;
|
|
}
|
|
if (count == 0 || (count % 3) != 0) {
|
|
return null;
|
|
}
|
|
style = new int[count];
|
|
}
|
|
for (int i = offset, j = 0; i < m_styles.length;) {
|
|
if (m_styles[i] == -1) {
|
|
break;
|
|
}
|
|
style[j++] = m_styles[i++];
|
|
}
|
|
return style;
|
|
}
|
|
|
|
private String decodeString(int offset, int length) {
|
|
try {
|
|
return (m_isUTF8 ? UTF8_DECODER : UTF16LE_DECODER).decode(
|
|
ByteBuffer.wrap(m_strings, offset, length)).toString();
|
|
} catch (CharacterCodingException ex) {
|
|
LOGGER.log(Level.WARNING, null, ex);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
private static final int getShort(byte[] array, int offset) {
|
|
return (array[offset + 1] & 0xff) << 8 | array[offset] & 0xff;
|
|
}
|
|
|
|
private static final int getShort(int[] array, int offset) {
|
|
int value = array[offset / 4];
|
|
if ((offset % 4) / 2 == 0) {
|
|
return (value & 0xFFFF);
|
|
} else {
|
|
return (value >>> 16);
|
|
}
|
|
}
|
|
|
|
private static final int[] getVarint(byte[] array, int offset) {
|
|
int val = array[offset];
|
|
boolean more = (val & 0x80) != 0;
|
|
val &= 0x7f;
|
|
|
|
if (! more) {
|
|
return new int[]{val, 1};
|
|
} else {
|
|
return new int[]{val << 8 | array[offset + 1] & 0xff, 2};
|
|
}
|
|
}
|
|
|
|
private int[] m_stringOffsets;
|
|
private byte[] m_strings;
|
|
private int[] m_styleOffsets;
|
|
private int[] m_styles;
|
|
private boolean m_isUTF8;
|
|
private static final CharsetDecoder UTF16LE_DECODER =
|
|
Charset.forName("UTF-16LE").newDecoder();
|
|
private static final CharsetDecoder UTF8_DECODER =
|
|
Charset.forName("UTF-8").newDecoder();
|
|
private static final Logger LOGGER =
|
|
Logger.getLogger(StringBlock.class.getName());
|
|
private static final int CHUNK_TYPE = 0x001C0001;
|
|
private static final int UTF8_FLAG = 0x00000100;
|
|
}
|