/* NOTICE: This file has been changed by Plutext Pty Ltd for use in docx4j.
* The package name has been changed; there may also be other changes.
*
* This notice is included to meet the condition in clause 4(b) of the License.
*/
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: TTFReader.java 679326 2008-07-24 09:35:34Z vhennebert $ */
package org.docx4j.fonts.fop.fonts.apps;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class TTFReader extends AbstractFontReader {
/** Used to detect incompatible versions of the generated XML files */
public static final String METRICS_VERSION_ATTR = "metrics-version";
/** Current version number for the metrics file */
public static final int METRICS_VERSION = 2;
/**
* Bugzilla 40739, check that attr has a metrics-version attribute
* compatible with ours.
* @param attr attributes read from the root element of a metrics XML file
* @throws SAXException if incompatible
*/
public static void checkMetricsVersion(Attributes attr) throws SAXException {
String err = null;
final String str = attr.getValue(METRICS_VERSION_ATTR);
if (str == null) {
err = "Missing " + METRICS_VERSION_ATTR + " attribute";
} else {
int version = 0;
try {
version = Integer.parseInt(str);
if (version < METRICS_VERSION) {
err = "Incompatible " + METRICS_VERSION_ATTR
+ " value (" + version + ", should be " + METRICS_VERSION
+ ")"
;
}
} catch (NumberFormatException e) {
err = "Invalid " + METRICS_VERSION_ATTR
+ " attribute value (" + str + ")";
}
}
if (err != null) {
throw new SAXException(
err
+ " - please regenerate the font metrics file with "
+ "a more recent version of FOP."
);
}
}
}