| /* ==================================================================== |
| 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.hpsf; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| |
| import org.apache.poi.util.CodePageUtil; |
| import org.apache.poi.util.Internal; |
| import org.apache.poi.util.LittleEndian; |
| import org.apache.poi.util.POILogFactory; |
| import org.apache.poi.util.POILogger; |
| import org.apache.poi.util.StringUtil; |
| |
| @Internal |
| class CodePageString |
| { |
| private final static POILogger logger = POILogFactory |
| .getLogger( CodePageString.class ); |
| |
| private byte[] _value; |
| |
| CodePageString( final byte[] data, final int startOffset ) |
| { |
| int offset = startOffset; |
| |
| int size = LittleEndian.getInt( data, offset ); |
| offset += LittleEndian.INT_SIZE; |
| |
| _value = LittleEndian.getByteArray( data, offset, size ); |
| if ( size != 0 && _value[size - 1] != 0 ) { |
| // TODO Some files, such as TestVisioWithCodepage.vsd, are currently |
| // triggering this for values that don't look like codepages |
| // See Bug #52258 for details |
| logger.log(POILogger.WARN, "CodePageString started at offset #" + offset |
| + " is not NULL-terminated" ); |
| // throw new IllegalPropertySetDataException( |
| // "CodePageString started at offset #" + offset |
| // + " is not NULL-terminated" ); |
| } |
| } |
| |
| CodePageString( String string, int codepage ) |
| throws UnsupportedEncodingException |
| { |
| setJavaValue( string, codepage ); |
| } |
| |
| String getJavaValue( int codepage ) throws UnsupportedEncodingException |
| { |
| String result; |
| if ( codepage == -1 ) |
| result = new String( _value, StringUtil.UTF8 ); |
| else |
| result = CodePageUtil.getStringFromCodePage(_value, codepage); |
| final int terminator = result.indexOf( '\0' ); |
| if ( terminator == -1 ) |
| { |
| logger.log( |
| POILogger.WARN, |
| "String terminator (\\0) for CodePageString property value not found." |
| + "Continue without trimming and hope for the best." ); |
| return result; |
| } |
| if ( terminator != result.length() - 1 ) |
| { |
| logger.log( |
| POILogger.WARN, |
| "String terminator (\\0) for CodePageString property value occured before the end of string. " |
| + "Trimming and hope for the best." ); |
| } |
| return result.substring( 0, terminator ); |
| } |
| |
| int getSize() |
| { |
| return LittleEndian.INT_SIZE + _value.length; |
| } |
| |
| void setJavaValue( String string, int codepage ) |
| throws UnsupportedEncodingException |
| { |
| String stringNT = string + "\0"; |
| if ( codepage == -1 ) |
| _value = stringNT.getBytes(StringUtil.UTF8); |
| else |
| _value = CodePageUtil.getBytesInCodePage(stringNT, codepage); |
| } |
| |
| int write( OutputStream out ) throws IOException |
| { |
| LittleEndian.putInt( _value.length, out ); |
| out.write( _value ); |
| return LittleEndian.INT_SIZE + _value.length; |
| } |
| } |