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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* CharReader.java
* ---------------
*/
package org.jpedal.parser.text;
/**
*
* @author markee
*/
class CharReader {
static int getNextValue(int i, final byte[] stream, final GlyphData glyphData, final boolean isCID) {
int rawInt;
//extract the next binary index value and convert to char, losing any returns
while(true){
glyphData.setLastChar();
rawInt = stream[i];
if (rawInt < 0) {
rawInt = 256 + rawInt;
}
glyphData.setRawChar((char)rawInt);
//eliminate escaped tabs and returns
if(glyphData.getRawChar()==92 &&(stream[i+1]==13 || stream[i+1]==10)){ // '\\'=92
i++;
rawInt = stream[i];
if (rawInt < 0) {
rawInt = 256 + rawInt;
}
glyphData.setRawChar((char) rawInt);
}
glyphData.setRawInt(rawInt);
//stop any returns in data stream getting through (happens in ghostscript)
if((glyphData.getRawChar()!=10 || (isCID && glyphData.getOpenChar()!='<')) && glyphData.getRawChar()!=13) {
break;
}
i++;
}
/*flag if we have entered/exited text block*/
if (glyphData.isText()) {
//non CID deliminator (allow for escaped deliminator)
final char testChar=glyphData.getRawChar();
if ((testChar==40 || testChar==41) && glyphData.getLastChar() != 92) { // '\\'=92 ')'=41
glyphData.updatePrefixCount(testChar);
} else if (testChar == 62 && glyphData.getOpenChar() == 60 ){ // ie <01>tj '<'=60 '<'=62
glyphData.setText(false); //unset text flag
}
}
return i;
}
}