/*
* Copyright (C) 2007-2008 Esmertec AG.
* Copyright (C) 2007-2008 The Android Open Source Project
*
* 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.google.android.mms.pdu;
import android.util.Config;
import android.util.Log;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
/**
* Encoded-string-value = Text-string | Value-length Char-set Text-string
*/
public class EncodedStringValue implements Cloneable {
private static final String TAG = "EncodedStringValue";
private static final boolean DEBUG = false;
private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;
/**
* The Char-set value.
*/
private int mCharacterSet;
/**
* The Text-string value.
*/
private byte[] mData;
/**
* Constructor.
*
* @param charset the Char-set value
* @param data the Text-string value
* @throws NullPointerException if Text-string value is null.
*/
public EncodedStringValue(int charset, byte[] data) {
// TODO: CharSet needs to be validated against MIBEnum.
if(null == data) {
throw new NullPointerException("EncodedStringValue: Text-string is null.");
}
mCharacterSet = charset;
mData = new byte[data.length];
System.arraycopy(data, 0, mData, 0, data.length);
}
/**
* Constructor.
*
* @param data the Text-string value
* @throws NullPointerException if Text-string value is null.
*/
public EncodedStringValue(byte[] data) {
this(CharacterSets.DEFAULT_CHARSET, data);
}
public EncodedStringValue(String data) {
try {
mData = data.getBytes(CharacterSets.DEFAULT_CHARSET_NAME);
mCharacterSet = CharacterSets.DEFAULT_CHARSET;
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "Default encoding must be supported.", e);
}
}
/**
* Get Char-set value.
*
* @return the value
*/
public int getCharacterSet() {
return mCharacterSet;
}
/**
* Set Char-set value.
*
* @param charset the Char-set value
*/
public void setCharacterSet(int charset) {
// TODO: CharSet needs to be validated against MIBEnum.
mCharacterSet = charset;
}
/**
* Get Text-string value.
*
* @return the value
*/
public byte[] getTextString() {
byte[] byteArray = new byte[mData.length];
System.arraycopy(mData, 0, byteArray, 0, mData.length);
return byteArray;
}
/**
* Set Text-string value.
*
* @param textString the Text-string value
* @throws NullPointerException if Text-string value is null.
*/
public void setTextString(byte[] textString) {
if(null == textString) {
throw new NullPointerException("EncodedStringValue: Text-string is null.");
}
mData = new byte[textString.length];
System.arraycopy(textString, 0, mData, 0, textString.length);
}
/**
* Convert this object to a {@link java.lang.String}. If the encoding of
* the EncodedStringValue is null or unsupported, it will be
* treated as iso-8859-1 encoding.
*
* @return The decoded String.
*/
public String getString() {
if (CharacterSets.ANY_CHARSET == mCharacterSet) {
return new String(mData); // system default encoding.
} else {
try {
String name = CharacterSets.getMimeName(mCharacterSet);
return new String(mData, name);
} catch (UnsupportedEncodingException e) {
if (LOCAL_LOGV) {
Log.v(TAG, e.getMessage(), e);
}
try {
return new String(mData, CharacterSets.MIMENAME_ISO_8859_1);
} catch (UnsupportedEncodingException _) {
return new String(mData); // system default encoding.
}
}
}
}
/**
* Append to Text-string.
*
* @param textString the textString to append
* @throws NullPointerException if the text String is null
* or an IOException occured.
*/
public void appendTextString(byte[] textString) {
if(null == textString) {
throw new NullPointerException("Text-string is null.");
}
if(null == mData) {
mData = new byte[textString.length];
System.arraycopy(textString, 0, mData, 0, textString.length);
} else {
ByteArrayOutputStream newTextString = new ByteArrayOutputStream();
try {
newTextString.write(mData);
newTextString.write(textString);
} catch (IOException e) {
e.printStackTrace();
throw new NullPointerException(
"appendTextString: failed when write a new Text-string");
}
mData = newTextString.toByteArray();
}
}
/*
* (non-Javadoc)
* @see java.lang.Object#clone()
*/
@Override
public Object clone() throws CloneNotSupportedException {
super.clone();
int len = mData.length;
byte[] dstBytes = new byte[len];
System.arraycopy(mData, 0, dstBytes, 0, len);
try {
return new EncodedStringValue(mCharacterSet, dstBytes);
} catch (Exception e) {
Log.e(TAG, "failed to clone an EncodedStringValue: " + this);
e.printStackTrace();
throw new CloneNotSupportedException(e.getMessage());
}
}
/**
* Split this encoded string around matches of the given pattern.
*
* @param pattern the delimiting pattern
* @return the array of encoded strings computed by splitting this encoded
* string around matches of the given pattern
*/
public EncodedStringValue[] split(String pattern) {
String[] temp = getString().split(pattern);
EncodedStringValue[] ret = new EncodedStringValue[temp.length];
for (int i = 0; i < ret.length; ++i) {
try {
ret[i] = new EncodedStringValue(mCharacterSet,
temp[i].getBytes());
} catch (NullPointerException _) {
// Can't arrive here
return null;
}
}
return ret;
}
/**
* Extract an EncodedStringValue[] from a given String.
*/
public static EncodedStringValue[] extract(String src) {
String[] values = src.split(";");
ArrayList<EncodedStringValue> list = new ArrayList<EncodedStringValue>();
for (int i = 0; i < values.length; i++) {
if (values[i].length() > 0) {
list.add(new EncodedStringValue(values[i]));
}
}
int len = list.size();
if (len > 0) {
return list.toArray(new EncodedStringValue[len]);
} else {
return null;
}
}
/**
* Concatenate an EncodedStringValue[] into a single String.
*/
public static String concat(EncodedStringValue[] addr) {
StringBuilder sb = new StringBuilder();
int maxIndex = addr.length - 1;
for (int i = 0; i <= maxIndex; i++) {
sb.append(addr[i].getString());
if (i < maxIndex) {
sb.append(";");
}
}
return sb.toString();
}
public static EncodedStringValue copy(EncodedStringValue value) {
if (value == null) {
return null;
}
return new EncodedStringValue(value.mCharacterSet, value.mData);
}
}
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