iText 5 itextpdf.jar Source Code

itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

✍: FYIcenter.com

com/itextpdf/text/pdf/fonts/otf/GlyphPositioningTableReader.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf.fonts.otf;

import com.itextpdf.text.pdf.RandomAccessFileOrArray;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Not used at present, keeping for sometime future.
 * 
 * @author <a href="mailto:paawak@gmail.com">Palash Ray</a>
 */
public class GlyphPositioningTableReader extends OpenTypeFontTableReader {
    
    public GlyphPositioningTableReader(RandomAccessFileOrArray rf, int gposTableLocation) throws IOException {
        super(rf, gposTableLocation);
    }
    
    public void read() throws FontReadingException  {  
        startReadingTable();
    }
    
    @Override
    protected void readSubTable(int lookupType, int subTableLocation) throws IOException {
        
        if (lookupType == 1) {
            readLookUpType_1(subTableLocation);
        } else if (lookupType == 4) {
            readLookUpType_4(subTableLocation);
        } else if (lookupType == 8) {
        	readLookUpType_8(subTableLocation);
        } else {
        	System.err.println("The lookupType " + lookupType + " is not yet supported by " + GlyphPositioningTableReader.class.getSimpleName());   
        }
        
    }
    
    private void readLookUpType_1(int lookupTableLocation) throws IOException {
    	rf.seek(lookupTableLocation);
    	int posFormat = rf.readShort();
    	
    	if (posFormat == 1) {
    		LOG.debug("Reading `Look Up Type 1, Format 1` ....");
            int coverageOffset = rf.readShort();
            int valueFormat = rf.readShort();
//            LOG.debug("valueFormat=" + valueFormat); 
            
            //check if XPlacement should be read
            if  ((valueFormat & 1) == 1) {
            	int xPlacement = rf.readShort();
            	LOG.debug("xPlacement=" + xPlacement); 
            }
            
           //check if YPlacement should be read
            if  ((valueFormat & 2) ==2) {
            	int yPlacement = rf.readShort();
            	LOG.debug("yPlacement=" + yPlacement); 
            }
            
            List<Integer> glyphCodes = readCoverageFormat(lookupTableLocation + coverageOffset);
            
            LOG.debug("glyphCodes=" + glyphCodes); 
    	} else {
    		System.err.println("The PosFormat " + posFormat + " for `LookupType 1` is not yet supported by " + GlyphPositioningTableReader.class.getSimpleName());
    	}
        
    }
    
    private void readLookUpType_4(int lookupTableLocation) throws IOException {
        rf.seek(lookupTableLocation);
        
        int posFormat = rf.readShort();
        
        if (posFormat == 1) {
        	
        	LOG.debug("Reading `Look Up Type 4, Format 1` ....");
        	
            int markCoverageOffset = rf.readShort();
            int baseCoverageOffset = rf.readShort();
            int classCount = rf.readShort();
            int markArrayOffset = rf.readShort();
            int baseArrayOffset = rf.readShort();
            
            List<Integer> markCoverages = readCoverageFormat(lookupTableLocation + markCoverageOffset);
            LOG.debug("markCoverages=" + markCoverages);
            
            List<Integer> baseCoverages = readCoverageFormat(lookupTableLocation + baseCoverageOffset);
            LOG.debug("baseCoverages=" + baseCoverages);
            
            readMarkArrayTable(lookupTableLocation + markArrayOffset);
            
            readBaseArrayTable(lookupTableLocation + baseArrayOffset, classCount);
        } else {
        	System.err.println("The posFormat " + posFormat + " is not supported by " + GlyphPositioningTableReader.class.getSimpleName());
        }
    }
    
    private void readLookUpType_8(int lookupTableLocation) throws IOException {
        rf.seek(lookupTableLocation);
        
        int posFormat = rf.readShort();
        
        if (posFormat == 3) {
        	LOG.debug("Reading `Look Up Type 8, Format 3` ....");
        	readChainingContextPositioningFormat_3(lookupTableLocation);
        } else {
        	System.err.println("The posFormat " + posFormat + " for `Look Up Type 8` is not supported by " + GlyphPositioningTableReader.class.getSimpleName());
        }
    }
    
    private void readChainingContextPositioningFormat_3(int lookupTableLocation) throws IOException {
        int backtrackGlyphCount = rf.readShort();
        LOG.debug("backtrackGlyphCount=" + backtrackGlyphCount); 
        List<Integer> backtrackGlyphOffsets =  new ArrayList<Integer>(backtrackGlyphCount);
        
        for (int i = 0; i < backtrackGlyphCount; i++) {
        	int backtrackGlyphOffset = rf.readShort();
        	backtrackGlyphOffsets.add(backtrackGlyphOffset);
        }
        
        int inputGlyphCount = rf.readShort();
        LOG.debug("inputGlyphCount=" + inputGlyphCount); 
        List<Integer>inputGlyphOffsets =  new ArrayList<Integer>(inputGlyphCount);
        
        for (int i = 0; i < inputGlyphCount; i++) {
        	int inputGlyphOffset = rf.readShort();
        	inputGlyphOffsets.add(inputGlyphOffset);
        }
        
        int lookaheadGlyphCount = rf.readShort();
        LOG.debug("lookaheadGlyphCount=" + lookaheadGlyphCount); 
        List<Integer>lookaheadGlyphOffsets =  new ArrayList<Integer>(lookaheadGlyphCount);
        
        for (int i = 0; i < lookaheadGlyphCount; i++) {
        	int lookaheadGlyphOffset = rf.readShort();
        	lookaheadGlyphOffsets.add(lookaheadGlyphOffset);
        }
        
        int posCount = rf.readShort();
        LOG.debug("posCount=" + posCount);
        
        List<PosLookupRecord> posLookupRecords = new ArrayList<PosLookupRecord>(posCount);
        
        for (int i = 0; i < posCount; i++) {
        	int sequenceIndex  = rf.readShort();
        	int lookupListIndex  = rf.readShort();
        	LOG.debug("sequenceIndex=" + sequenceIndex + ", lookupListIndex=" + lookupListIndex); 
        	posLookupRecords.add(new PosLookupRecord(sequenceIndex, lookupListIndex));
        }
        
        for (int backtrackGlyphOffset : backtrackGlyphOffsets) {
        	List<Integer> backtrackGlyphs = readCoverageFormat(lookupTableLocation + backtrackGlyphOffset);
        	LOG.debug("backtrackGlyphs=" + backtrackGlyphs);
        }
        
        for (int inputGlyphOffset : inputGlyphOffsets) {
        	List<Integer> inputGlyphs = readCoverageFormat(lookupTableLocation + inputGlyphOffset);
        	LOG.debug("inputGlyphs=" + inputGlyphs);
        }
        
        for (int lookaheadGlyphOffset : lookaheadGlyphOffsets) {
        	List<Integer> lookaheadGlyphs = readCoverageFormat(lookupTableLocation + lookaheadGlyphOffset);
        	LOG.debug("lookaheadGlyphs=" + lookaheadGlyphs);
        }

    }
    
    private void readMarkArrayTable(int markArrayLocation) throws IOException {
    	rf.seek(markArrayLocation);
    	int markCount = rf.readShort();
    	List<MarkRecord> markRecords = new ArrayList<GlyphPositioningTableReader.MarkRecord>();
    	
    	for (int i = 0; i < markCount; i++) {
    		markRecords.add(readMarkRecord());
    	}
    	
    	for (MarkRecord markRecord : markRecords) {
    		readAnchorTable(markArrayLocation + markRecord.markAnchorOffset);
    	}
    }
    
    private MarkRecord readMarkRecord() throws IOException {
    	int markClass = rf.readShort();
    	int markAnchorOffset = rf.readShort();
    	return new MarkRecord(markClass, markAnchorOffset);
    }
    
    private void readAnchorTable(int anchorTableLocation) throws IOException {
    	rf.seek(anchorTableLocation);
    	int anchorFormat = rf.readShort();
    	
    	if  (anchorFormat != 1) {
    		System.err.println("The extra features of the AnchorFormat " + anchorFormat + " will not be used");
    	}
    	
    	int x = rf.readShort();
    	int y = rf.readShort();
    	
    }
    
    private void readBaseArrayTable(int baseArrayTableLocation, int classCount) throws IOException {
    	rf.seek(baseArrayTableLocation);
    	int baseCount = rf.readShort();
    	Set<Integer> baseAnchors = new HashSet<Integer>();
    	
    	for (int i = 0; i < baseCount; i++) {
    		//read BaseRecord
    		for (int k = 0; k < classCount; k++) {
    			int baseAnchor = rf.readShort();
    			baseAnchors.add(baseAnchor);
    		}
    	}
    	
//    	LOG.debug(baseAnchors.size()); 
    	
    	for (int baseAnchor : baseAnchors) {
    		readAnchorTable(baseArrayTableLocation + baseAnchor);
    	}
    	
    }
    
    static class MarkRecord {
    	final int markClass;
    	final int markAnchorOffset;
    	
		public MarkRecord(int markClass, int markAnchorOffset) {
			this.markClass = markClass;
			this.markAnchorOffset = markAnchorOffset;
		}
		
    }
    
    static class PosLookupRecord {
    	final int sequenceIndex;
    	final int lookupListIndex;
    	
		public PosLookupRecord(int sequenceIndex, int lookupListIndex) {
			this.sequenceIndex = sequenceIndex;
			this.lookupListIndex = lookupListIndex;
		}
		
    }

}

com/itextpdf/text/pdf/fonts/otf/GlyphPositioningTableReader.java

 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation

2021-07-03, 47768👍, 0💬