package com.shazam.axmlparser;
import com.google.common.io.LittleEndianDataInputStream;
import java.io.DataInput;
import java.io.IOException;
import java.io.InputStream;
@SuppressWarnings("ALL")
public final class AXMLParser {
/**
* Types of returned tags.
* Values are compatible to those in XmlPullParser.
*/
public static final int
START_DOCUMENT = 0,
END_DOCUMENT = 1,
START_TAG = 2,
END_TAG = 3,
TEXT = 4;
/**
* Creates object and reads file info.
* Call next() to read first tag.
*
* @param stream the input stream
* @throws IOException when any I/O errors occur
*/
public AXMLParser(InputStream stream) throws IOException {
m_stream = stream;
doStart();
}
/**
* Closes parser:
* * closes (and nulls) underlying stream
* * nulls dynamic data
* * moves object to 'closed' state, where methods
* return invalid values and next() throws IOException.
*/
public final void close() {
if (m_stream == null) {
return;
}
try {
m_stream.close();
} catch (IOException e) {
}
if (m_nextException == null) {
m_nextException = new IOException("Closed.");
}
m_stream = null;
resetState();
}
public final int next() throws IOException {
if (m_nextException != null) {
throw m_nextException;
}
try {
return doNext();
} catch (IOException e) {
m_nextException = e;
resetState();
throw e;
}
}
/**
* Returns current tag type.
*
* @return the tag type
*/
public final int getType() {
return m_tagType;
}
public final String getName() {
if (m_tagName == -1) {
return null;
}
return getString(m_tagName);
}
public final int getLineNumber() {
return m_tagSourceLine;
}
public final int getAttributeCount() {
if (m_tagAttributes == null) {
return -1;
}
return m_tagAttributes.length;
}
/**
* Returns attribute namespace.
*
* @param index the index
* @return the attribute namespace at index
*/
public final String getAttributeNamespace(int index) {
return getString(getAttribute(index).namespace);
}
/**
* Returns attribute name.
*
* @param index the index
* @return the attribute name at index
*/
public final String getAttributeName(int index) {
return getString(getAttribute(index).name);
}
/**
* Returns attribute resource ID.
*
* @param index the index
* @return the attribute resource ID at index
*/
public final int getAttributeResourceID(int index) {
int resourceIndex = getAttribute(index).name;
if (m_resourceIDs == null ||
resourceIndex < 0 || resourceIndex >= m_resourceIDs.length) {
return 0;
}
return m_resourceIDs[resourceIndex];
}
/**
* Returns type of attribute value.
* See TypedValue.TYPE_ values.
*
* @param index the index
* @return the attribute type at index
*/
public final int getAttributeValueType(int index) {
return getAttribute(index).valueType;
}
/**
* For attributes of type TypedValue.TYPE_STRING returns
* string value. For other types returns empty string.
*
* @param index the index
* @return the attribute string at index
*/
public final String getAttributeValueString(int index) {
return getString(getAttribute(index).valueString);
}
/**
* Returns integer attribute value.
* This integer interpreted according to attribute type.
*
* @param index the index
* @return the attribute at index
*/
public final int getAttributeValue(int index) {
return getAttribute(index).value;
}
private static final class TagAttribute {
public int namespace;
public int name;
public int valueString;
public int valueType;
public int value;
}
private final void resetState() {
m_tagType = -1;
m_tagSourceLine = -1;
m_tagName = -1;
m_tagAttributes = null;
}
private final void doStart() throws IOException {
ReadUtil.readCheckType(m_stream, AXML_CHUNK_TYPE);
/*chunk size*/
ReadUtil.readInt(m_stream);
m_strings = StringBlock.read(new ExtDataInput((DataInput) new LittleEndianDataInputStream(m_stream)));
ReadUtil.readCheckType(m_stream, RESOURCEIDS_CHUNK_TYPE);
int chunkSize = ReadUtil.readInt(m_stream);
if (chunkSize < 8 || (chunkSize % 4) != 0) {
throw new IOException("Invalid resource ids size (" + chunkSize + ").");
}
m_resourceIDs = ReadUtil.readIntArray(m_stream, chunkSize / 4 - 2);
resetState();
}
private final int doNext() throws IOException {
if (m_tagType == END_DOCUMENT) {
return END_DOCUMENT;
}
m_tagType = (ReadUtil.readInt(m_stream) & 0xFF);/*other 3 bytes?*/
/*some source length*/
ReadUtil.readInt(m_stream);
m_tagSourceLine = ReadUtil.readInt(m_stream);
/*0xFFFFFFFF*/
ReadUtil.readInt(m_stream);
m_tagName = -1;
m_tagAttributes = null;
switch (m_tagType) {
case START_DOCUMENT: {
/*namespace?*/
ReadUtil.readInt(m_stream);
/*name?*/
ReadUtil.readInt(m_stream);
break;
}
case START_TAG: {
/*0xFFFFFFFF*/
ReadUtil.readInt(m_stream);
m_tagName = ReadUtil.readInt(m_stream);
/*flags?*/
ReadUtil.readInt(m_stream);
int attributeCount = ReadUtil.readInt(m_stream);
/*?*/
ReadUtil.readInt(m_stream);
m_tagAttributes = new TagAttribute[attributeCount];
for (int i = 0; i != attributeCount; ++i) {
TagAttribute attribute = new TagAttribute();
attribute.namespace = ReadUtil.readInt(m_stream);
attribute.name = ReadUtil.readInt(m_stream);
attribute.valueString = ReadUtil.readInt(m_stream);
attribute.valueType = (ReadUtil.readInt(m_stream) >>> 24);/*other 3 bytes?*/
attribute.value = ReadUtil.readInt(m_stream);
m_tagAttributes[i] = attribute;
}
break;
}
case END_TAG: {
/*0xFFFFFFFF*/
ReadUtil.readInt(m_stream);
m_tagName = ReadUtil.readInt(m_stream);
break;
}
case TEXT: {
m_tagName = ReadUtil.readInt(m_stream);
/*?*/
ReadUtil.readInt(m_stream);
/*?*/
ReadUtil.readInt(m_stream);
break;
}
case END_DOCUMENT: {
/*namespace?*/
ReadUtil.readInt(m_stream);
/*name?*/
ReadUtil.readInt(m_stream);
break;
}
default: {
throw new IOException("Invalid tag type (" + m_tagType + ").");
}
}
return m_tagType;
}
private final TagAttribute getAttribute(int index) {
if (m_tagAttributes == null) {
throw new IndexOutOfBoundsException("Attributes are not available.");
}
if (index >= m_tagAttributes.length) {
throw new IndexOutOfBoundsException("Invalid attribute index (" + index + ").");
}
return m_tagAttributes[index];
}
private final String getString(int index) {
if (index == -1) {
return "";
}
return m_strings.getString(index);
}
private InputStream m_stream;
private StringBlock m_strings;
private int[] m_resourceIDs;
private IOException m_nextException;
private int m_tagType;
private int m_tagSourceLine;
private int m_tagName;
private TagAttribute[] m_tagAttributes;
private static final int
AXML_CHUNK_TYPE = 0x00080003,
RESOURCEIDS_CHUNK_TYPE = 0x00080180;
}
