112 lines
4.0 KiB
Java
112 lines
4.0 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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 org.apache.poi.hpsf;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import org.apache.poi.util.CodePageUtil;
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import org.apache.poi.util.Internal;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.util.POILogFactory;
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import org.apache.poi.util.POILogger;
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import org.apache.poi.util.StringUtil;
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@Internal
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class CodePageString
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{
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private final static POILogger logger = POILogFactory
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.getLogger( CodePageString.class );
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private byte[] _value;
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CodePageString( final byte[] data, final int startOffset )
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{
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int offset = startOffset;
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int size = LittleEndian.getInt( data, offset );
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offset += LittleEndian.INT_SIZE;
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_value = LittleEndian.getByteArray( data, offset, size );
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if ( size != 0 && _value[size - 1] != 0 ) {
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// TODO Some files, such as TestVisioWithCodepage.vsd, are currently
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// triggering this for values that don't look like codepages
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// See Bug #52258 for details
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logger.log(POILogger.WARN, "CodePageString started at offset #" + offset
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+ " is not NULL-terminated" );
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// throw new IllegalPropertySetDataException(
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// "CodePageString started at offset #" + offset
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// + " is not NULL-terminated" );
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}
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}
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CodePageString( String string, int codepage )
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throws UnsupportedEncodingException
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{
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setJavaValue( string, codepage );
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}
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String getJavaValue( int codepage ) throws UnsupportedEncodingException
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{
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String result;
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if ( codepage == -1 )
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result = new String( _value, StringUtil.UTF8 );
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else
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result = CodePageUtil.getStringFromCodePage(_value, codepage);
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final int terminator = result.indexOf( '\0' );
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if ( terminator == -1 )
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{
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logger.log(
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POILogger.WARN,
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"String terminator (\\0) for CodePageString property value not found."
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+ "Continue without trimming and hope for the best." );
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return result;
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}
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if ( terminator != result.length() - 1 )
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{
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logger.log(
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POILogger.WARN,
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"String terminator (\\0) for CodePageString property value occured before the end of string. "
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+ "Trimming and hope for the best." );
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}
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return result.substring( 0, terminator );
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}
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int getSize()
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{
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return LittleEndian.INT_SIZE + _value.length;
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}
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void setJavaValue( String string, int codepage )
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throws UnsupportedEncodingException
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{
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String stringNT = string + "\0";
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if ( codepage == -1 )
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_value = stringNT.getBytes(StringUtil.UTF8);
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else
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_value = CodePageUtil.getBytesInCodePage(stringNT, codepage);
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}
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int write( OutputStream out ) throws IOException
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{
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LittleEndian.putInt( _value.length, out );
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out.write( _value );
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return LittleEndian.INT_SIZE + _value.length;
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}
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}
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