com.lowagie.text.pdf.EnumerateTTC Maven / Gradle / Ivy
/*
* $Id: EnumerateTTC.java 4065 2009-09-16 23:09:11Z psoares33 $
* $Name$
*
* Copyright 2001, 2002 by Paulo Soares.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.text.pdf;
import com.lowagie.text.DocumentException;
import com.lowagie.text.error_messages.MessageLocalization;
import java.io.IOException;
import java.util.HashMap;
/**
* Enumerates all the fonts inside a True Type Collection.
*
* @author Paulo Soares ([email protected])
*/
class EnumerateTTC extends TrueTypeFont {
/**
* OpenType fonts that contain TrueType outlines should use the value of 0x00010000 for the sfntVersion. OpenType
* fonts containing CFF data (version 1 or 2) should use 0x4F54544F ('OTTO', when re-interpreted as a Tag) for
* sfntVersion.
*
* Note: The Apple specification for TrueType fonts allows for 'true' and 'typ1' for sfnt version. These version
* tags should not be used for fonts which contain OpenType tables. See more at:
* https://docs.microsoft.com/de-de/typography/opentype/spec/otff#organization-of-an-opentype-font
*/
private static final int TRUE_TYPE_SFNT_VERSION = 0x00010000;
private static final int CFF_DATA_SFNT_VERSION = 0x4F54544F; //'OTTO'
protected String[] names;
EnumerateTTC(String ttcFile) throws DocumentException, IOException {
fileName = ttcFile;
rf = new RandomAccessFileOrArray(ttcFile);
findNames();
}
EnumerateTTC(byte[] ttcArray) throws DocumentException, IOException {
fileName = "Byte array TTC";
rf = new RandomAccessFileOrArray(ttcArray);
findNames();
}
void findNames() throws DocumentException, IOException {
tables = new HashMap<>();
try {
String mainTag = readStandardString(4);
if (!mainTag.equals("ttcf")) {
throw new DocumentException(
MessageLocalization.getComposedMessage("1.is.not.a.valid.ttc.file", fileName));
}
int majorVersion = rf.readShort();
rf.skipBytes(2);
int dirCount = rf.readInt();
names = new String[dirCount];
int dirPos = rf.getFilePointer();
for (int dirIdx = 0; dirIdx < dirCount; ++dirIdx) {
tables.clear();
rf.seek(dirPos);
rf.skipBytes(dirIdx * 4);
directoryOffset = rf.readInt();
rf.seek(directoryOffset);
int sfntVersion = rf.readInt();
boolean trueTypeFont = sfntVersion == TRUE_TYPE_SFNT_VERSION;
boolean cffDataFont = sfntVersion == CFF_DATA_SFNT_VERSION &&
(majorVersion == 1 || majorVersion == 2);
if (!trueTypeFont && !cffDataFont) {
throw new DocumentException(
MessageLocalization.getComposedMessage("1.is.not.a.valid.ttf.file", fileName));
}
int num_tables = rf.readUnsignedShort();
rf.skipBytes(6);
for (int k = 0; k < num_tables; ++k) {
String tag = readStandardString(4);
rf.skipBytes(4);
int[] table_location = new int[2];
table_location[0] = rf.readInt();
table_location[1] = rf.readInt();
tables.put(tag, table_location);
}
names[dirIdx] = getBaseFont();
}
} finally {
if (rf != null) {
rf.close();
}
}
}
String[] getNames() {
return names;
}
}