/*
* $Id: CMapParserEx.java 5195 2012-06-18 14:25:30Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2012 1T3XT BVBA
* 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 1T3XT,
* 1T3XT 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.cmaps;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.PRTokeniser;
import com.itextpdf.text.pdf.PdfContentParser;
import com.itextpdf.text.pdf.PdfLiteral;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfNumber;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfString;
import com.itextpdf.text.pdf.RandomAccessFileOrArray;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
/**
*
* @author psoares
*/
public class CMapParserEx {
private static final PdfName CMAPNAME = new PdfName("CMapName");
private static final String DEF = "def";
private static final String ENDCIDRANGE = "endcidrange";
private static final String ENDCIDCHAR = "endcidchar";
private static final String ENDBFRANGE = "endbfrange";
private static final String ENDBFCHAR = "endbfchar";
private static final String USECMAP = "usecmap";
private static final int MAXLEVEL = 10;
public static void parseCid(String cmapName, AbstractCMap cmap, CidLocation location) throws IOException {
parseCid(cmapName, cmap, location, 0);
}
private static void parseCid(String cmapName, AbstractCMap cmap, CidLocation location, int level) throws IOException {
if (level >= MAXLEVEL)
return;
PRTokeniser inp = location.getLocation(cmapName);
try {
ArrayList<PdfObject> list = new ArrayList<PdfObject>();
PdfContentParser cp = new PdfContentParser(inp);
int maxExc = 50;
while (true) {
try {
cp.parse(list);
}
catch (Exception ex) {
if (--maxExc < 0)
break;
continue;
}
if (list.isEmpty())
break;
String last = list.get(list.size() - 1).toString();
if (level == 0 && list.size() == 3 && last.equals(DEF)) {
PdfObject key = list.get(0);
if (PdfName.REGISTRY.equals(key))
cmap.setRegistry(list.get(1).toString());
else if (PdfName.ORDERING.equals(key))
cmap.setOrdering(list.get(1).toString());
else if (CMAPNAME.equals(key))
cmap.setName(list.get(1).toString());
else if (PdfName.SUPPLEMENT.equals(key)) {
try {
cmap.setSupplement(((PdfNumber)list.get(1)).intValue());
}
catch (Exception ex) {}
}
}
else if ((last.equals(ENDCIDCHAR) || last.equals(ENDBFCHAR)) && list.size() >= 3) {
int lmax = list.size() - 2;
for (int k = 0; k < lmax; k += 2) {
if (list.get(k) instanceof PdfString) {
cmap.addChar((PdfString)list.get(k), list.get(k + 1));
}
}
}
else if ((last.equals(ENDCIDRANGE) || last.equals(ENDBFRANGE)) && list.size() >= 4) {
int lmax = list.size() - 3;
for (int k = 0; k < lmax; k += 3) {
if (list.get(k) instanceof PdfString && list.get(k + 1) instanceof PdfString) {
cmap.addRange((PdfString)list.get(k), (PdfString)list.get(k + 1), list.get(k + 2));
}
}
}
else if (last.equals(USECMAP) && list.size() == 2 && list.get(0) instanceof PdfName) {
parseCid(PdfName.decodeName(list.get(0).toString()), cmap, location, level + 1);
}
}
}
finally {
inp.close();
}
}
private static void encodeSequence(int size, byte seqs[], char cid, ArrayList<char[]> planes) {
--size;
int nextPlane = 0;
for (int idx = 0; idx < size; ++idx) {
char plane[] = planes.get(nextPlane);
int one = seqs[idx] & 0xff;
char c = plane[one];
if (c != 0 && (c & 0x8000) == 0)
throw new RuntimeException(MessageLocalization.getComposedMessage("inconsistent.mapping"));
if (c == 0) {
planes.add(new char[256]);
c = (char)(planes.size() - 1 | 0x8000);
plane[one] = c;
}
nextPlane = c & 0x7fff;
}
char plane[] = planes.get(nextPlane);
int one = seqs[size] & 0xff;
char c = plane[one];
if ((c & 0x8000) != 0)
throw new RuntimeException(MessageLocalization.getComposedMessage("inconsistent.mapping"));
plane[one] = cid;
}
}