/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.poi.hslf.record;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.StringUtil;
/**
* A CString (type 4026). Holds a unicode string, and the first two bytes
* of the record header normally encode the count. Typically attached to
* some complex sequence of records, eg Commetns.
*
* @author Nick Burch
*/
public class CString extends RecordAtom {
private byte[] _header;
private static long _type = 4026l;
/** The bytes that make up the text */
private byte[] _text;
/** Grabs the text. */
public String getText() {
return StringUtil.getFromUnicodeLE(_text);
}
/** Updates the text in the Atom. */
public void setText(String text) {
// Convert to little endian unicode
_text = new byte[text.length()*2];
StringUtil.putUnicodeLE(text,_text,0);
// Update the size (header bytes 5-8)
LittleEndian.putInt(_header,4,_text.length);
}
/**
* Grabs the count, from the first two bytes of the header.
* The meaning of the count is specific to the type of the parent record
*/
public int getCount() {
return (int)LittleEndian.getShort(_header);
}
/**
* Sets the count
* The meaning of the count is specific to the type of the parent record
*/
public void setCount(int count) {
LittleEndian.putShort(_header, (short)count);
}
/* *************** record code follows ********************** */
/**
* For the CStrubg Atom
*/
protected CString(byte[] source, int start, int len) {
// Sanity Checking
if(len < 8) { len = 8; }
// Get the header
_header = new byte[8];
System.arraycopy(source,start,_header,0,8);
// Grab the text
_text = new byte[len-8];
System.arraycopy(source,start+8,_text,0,len-8);
}
/**
* Create an empty CString
*/
public CString() {
// 0 length header
_header = new byte[] { 0, 0, 0xBA-256, 0x0f, 0, 0, 0, 0 };
// Empty text
_text = new byte[0];
}
/**
* We are of type 4026
*/
public long getRecordType() { return _type; }
/**
* Write the contents of the record back, so it can be written
* to disk
*/
public void writeOut(OutputStream out) throws IOException {
// Header - size or type unchanged
out.write(_header);
// Write out our text
out.write(_text);
}
}
|