285 lines
8.5 KiB
Java
285 lines
8.5 KiB
Java
/*
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* Copyright (C) 2007-2008 Esmertec AG.
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* Copyright (C) 2007-2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.mmscommon;
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import android.util.Config;
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import android.util.Log;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.util.ArrayList;
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/**
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* Encoded-string-value = Text-string | Value-length Char-set Text-string
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*/
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public class EncodedStringValue implements Cloneable {
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private static final String TAG = "EncodedStringValue";
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private static final boolean DEBUG = false;
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private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;
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/**
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* The Char-set value.
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*/
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private int mCharacterSet;
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/**
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* The Text-string value.
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*/
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private byte[] mData;
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/**
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* Constructor.
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*
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* @param charset the Char-set value
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* @param data the Text-string value
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* @throws NullPointerException if Text-string value is null.
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*/
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public EncodedStringValue(int charset, byte[] data) {
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// TODO: CharSet needs to be validated against MIBEnum.
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if(null == data) {
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throw new NullPointerException("EncodedStringValue: Text-string is null.");
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}
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mCharacterSet = charset;
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mData = new byte[data.length];
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System.arraycopy(data, 0, mData, 0, data.length);
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}
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/**
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* Constructor.
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*
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* @param data the Text-string value
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* @throws NullPointerException if Text-string value is null.
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*/
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public EncodedStringValue(byte[] data) {
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this(CharacterSets.DEFAULT_CHARSET, data);
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}
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public EncodedStringValue(String data) {
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try {
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mData = data.getBytes(CharacterSets.DEFAULT_CHARSET_NAME);
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mCharacterSet = CharacterSets.DEFAULT_CHARSET;
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} catch (UnsupportedEncodingException e) {
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Log.e(TAG, "Default encoding must be supported.", e);
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}
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}
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/**
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* Get Char-set value.
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*
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* @return the value
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*/
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public int getCharacterSet() {
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return mCharacterSet;
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}
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/**
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* Set Char-set value.
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*
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* @param charset the Char-set value
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*/
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public void setCharacterSet(int charset) {
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// TODO: CharSet needs to be validated against MIBEnum.
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mCharacterSet = charset;
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}
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/**
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* Get Text-string value.
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*
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* @return the value
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*/
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public byte[] getTextString() {
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byte[] byteArray = new byte[mData.length];
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System.arraycopy(mData, 0, byteArray, 0, mData.length);
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return byteArray;
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}
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/**
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* Set Text-string value.
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*
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* @param textString the Text-string value
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* @throws NullPointerException if Text-string value is null.
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*/
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public void setTextString(byte[] textString) {
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if(null == textString) {
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throw new NullPointerException("EncodedStringValue: Text-string is null.");
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}
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mData = new byte[textString.length];
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System.arraycopy(textString, 0, mData, 0, textString.length);
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}
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/**
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* Convert this object to a {@link java.lang.String}. If the encoding of
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* the EncodedStringValue is null or unsupported, it will be
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* treated as iso-8859-1 encoding.
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*
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* @return The decoded String.
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*/
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public String getString() {
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if (CharacterSets.ANY_CHARSET == mCharacterSet) {
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return new String(mData); // system default encoding.
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} else {
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try {
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String name = CharacterSets.getMimeName(mCharacterSet);
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return new String(mData, name);
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} catch (UnsupportedEncodingException e) {
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if (LOCAL_LOGV) {
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Log.v(TAG, e.getMessage(), e);
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}
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try {
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return new String(mData, CharacterSets.MIMENAME_ISO_8859_1);
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} catch (UnsupportedEncodingException _) {
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return new String(mData); // system default encoding.
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}
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}
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}
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}
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/**
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* Append to Text-string.
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*
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* @param textString the textString to append
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* @throws NullPointerException if the text String is null
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* or an IOException occured.
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*/
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public void appendTextString(byte[] textString) {
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if(null == textString) {
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throw new NullPointerException("Text-string is null.");
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}
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if(null == mData) {
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mData = new byte[textString.length];
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System.arraycopy(textString, 0, mData, 0, textString.length);
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} else {
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ByteArrayOutputStream newTextString = new ByteArrayOutputStream();
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try {
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newTextString.write(mData);
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newTextString.write(textString);
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} catch (IOException e) {
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e.printStackTrace();
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throw new NullPointerException(
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"appendTextString: failed when write a new Text-string");
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}
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mData = newTextString.toByteArray();
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}
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}
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/*
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* (non-Javadoc)
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* @see java.lang.Object#clone()
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*/
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@Override
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public Object clone() throws CloneNotSupportedException {
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super.clone();
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int len = mData.length;
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byte[] dstBytes = new byte[len];
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System.arraycopy(mData, 0, dstBytes, 0, len);
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try {
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return new EncodedStringValue(mCharacterSet, dstBytes);
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} catch (Exception e) {
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Log.e(TAG, "failed to clone an EncodedStringValue: " + this);
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e.printStackTrace();
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throw new CloneNotSupportedException(e.getMessage());
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}
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}
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/**
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* Split this encoded string around matches of the given pattern.
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*
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* @param pattern the delimiting pattern
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* @return the array of encoded strings computed by splitting this encoded
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* string around matches of the given pattern
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*/
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public EncodedStringValue[] split(String pattern) {
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String[] temp = getString().split(pattern);
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EncodedStringValue[] ret = new EncodedStringValue[temp.length];
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for (int i = 0; i < ret.length; ++i) {
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try {
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ret[i] = new EncodedStringValue(mCharacterSet,
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temp[i].getBytes());
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} catch (NullPointerException _) {
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// Can't arrive here
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return null;
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}
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}
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return ret;
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}
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/**
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* Extract an EncodedStringValue[] from a given String.
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*/
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public static EncodedStringValue[] extract(String src) {
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String[] values = src.split(";");
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ArrayList<EncodedStringValue> list = new ArrayList<EncodedStringValue>();
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for (int i = 0; i < values.length; i++) {
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if (values[i].length() > 0) {
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list.add(new EncodedStringValue(values[i]));
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}
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}
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int len = list.size();
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if (len > 0) {
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return list.toArray(new EncodedStringValue[len]);
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} else {
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return null;
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}
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}
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/**
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* Concatenate an EncodedStringValue[] into a single String.
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*/
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public static String concat(EncodedStringValue[] addr) {
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StringBuilder sb = new StringBuilder();
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int maxIndex = addr.length - 1;
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for (int i = 0; i <= maxIndex; i++) {
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sb.append(addr[i].getString());
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if (i < maxIndex) {
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sb.append(";");
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}
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}
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return sb.toString();
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}
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public static EncodedStringValue copy(EncodedStringValue value) {
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if (value == null) {
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return null;
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}
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return new EncodedStringValue(value.mCharacterSet, value.mData);
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}
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public static EncodedStringValue[] encodeStrings(String[] array) {
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int count = array.length;
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if (count > 0) {
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EncodedStringValue[] encodedArray = new EncodedStringValue[count];
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for (int i = 0; i < count; i++) {
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encodedArray[i] = new EncodedStringValue(array[i]);
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}
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return encodedArray;
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}
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return null;
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}
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}
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