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/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2022 iText Group NV
* Authors: Alexander Chingarev, Bruno Lowagie, 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: [email protected]
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.log.Logger;
import com.itextpdf.text.log.LoggerFactory;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
/**
* @see TtfUnicodeWriter
*/
public class PdfATtfUnicodeWriter extends TtfUnicodeWriter {
final protected PdfAConformanceLevel pdfAConformanceLevel;
/**
* @see TtfUnicodeWriter#TtfUnicodeWriter(PdfWriter)
*/
public PdfATtfUnicodeWriter(PdfWriter writer, PdfAConformanceLevel pdfAConformanceLevel) {
super(writer);
this.pdfAConformanceLevel = pdfAConformanceLevel;
}
/**
* @see TtfUnicodeWriter#writeFont(TrueTypeFontUnicode, PdfIndirectReference, Object[], byte[])
*/
public void writeFont(TrueTypeFontUnicode font, PdfIndirectReference ref, Object params[], byte[] rotbits) throws DocumentException, IOException {
@SuppressWarnings("unchecked")
HashMap longTag = (HashMap)params[0];
font.addRangeUni(longTag, true, font.subset);
int metrics[][] = longTag.values().toArray(new int[0][]);
Arrays.sort(metrics, font);
PdfIndirectReference ind_font;
PdfObject pobj;
PdfIndirectObject obj;
if (font.cff) {
byte b[] = font.readCffFont();
if (font.subset || font.subsetRanges != null) {
CFFFontSubset cff = new CFFFontSubset(new RandomAccessFileOrArray(b),longTag);
try {
b = cff.Process(cff.getNames()[0]);
//temporary fix for cff subset failure
} catch(Exception e) {
LoggerFactory.getLogger(PdfATtfUnicodeWriter.class).error("Issue in CFF font subsetting." +
"Subsetting was disabled", e);
font.setSubset(false);
font.addRangeUni(longTag, true, font.subset);
metrics = longTag.values().toArray(new int[0][]);
Arrays.sort(metrics, font);
}
}
pobj = new BaseFont.StreamFont(b, "CIDFontType0C", font.compressionLevel);
obj = writer.addToBody(pobj);
ind_font = obj.getIndirectReference();
} else {
byte[] b;
if (font.subset || font.directoryOffset != 0) {
synchronized (font.rf) {
TrueTypeFontSubSet sb = new TrueTypeFontSubSet(font.fileName, new RandomAccessFileOrArray(font.rf), new HashSet(longTag.keySet()), font.directoryOffset, false, false);
b = sb.process();
}
} else {
b = font.getFullFont();
}
int lengths[] = new int[]{b.length};
pobj = new BaseFont.StreamFont(b, lengths, font.compressionLevel);
obj = writer.addToBody(pobj);
ind_font = obj.getIndirectReference();
}
// CIDSet shall be based on font.maxGlyphId property of the font, it is maxp.numGlyphs for ttf,
// because technically we convert all unused glyphs to space, e.g. just remove outlines.
byte[] cidSetBytes = new byte[font.maxGlyphId / 8 + 1];
for (int i = 0; i < font.maxGlyphId / 8; i++) {
cidSetBytes[i] |= 0xff;
}
for (int i = 0; i < font.maxGlyphId % 8; i++) {
cidSetBytes[cidSetBytes.length - 1] |= rotbits[i];
}
PdfStream stream = new PdfStream(cidSetBytes);
stream.flateCompress(font.compressionLevel);
PdfIndirectReference cidset = writer.addToBody(stream).getIndirectReference();
String subsetPrefix = "";
if (font.subset)
subsetPrefix = BaseFont.createSubsetPrefix();
PdfDictionary dic = font.getFontDescriptor(ind_font, subsetPrefix, cidset);
obj = writer.addToBody(dic);
ind_font = obj.getIndirectReference();
pobj = font.getCIDFontType2(ind_font, subsetPrefix, metrics);
obj = writer.addToBody(pobj);
ind_font = obj.getIndirectReference();
pobj = font.getToUnicode(metrics);
PdfIndirectReference toUnicodeRef = null;
if (pobj != null) {
obj = writer.addToBody(pobj);
toUnicodeRef = obj.getIndirectReference();
}
pobj = font.getFontBaseType(ind_font, subsetPrefix, toUnicodeRef);
writer.addToBody(pobj, ref);
}
}
