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/*
* 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: $ */
package org.apache.fop.fonts.substitute;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.fop.apps.FOPException;
/**
* Configures a font substitution catalog
*/
public class FontSubstitutionsConfigurator {
private Configuration cfg = null;
/**
* Main constructor
*
* @param cfg a configuration
*/
public FontSubstitutionsConfigurator(Configuration cfg) {
this.cfg = cfg;
}
private static FontQualifier getQualfierFromConfiguration(Configuration cfg)
throws FOPException {
String fontFamily = cfg.getAttribute("font-family", null);
if (fontFamily == null) {
throw new FOPException("substitution qualifier must have a font-family");
}
FontQualifier qualifier = new FontQualifier();
qualifier.setFontFamily(fontFamily);
String fontWeight = cfg.getAttribute("font-weight", null);
if (fontWeight != null) {
qualifier.setFontWeight(fontWeight);
}
String fontStyle = cfg.getAttribute("font-style", null);
if (fontStyle != null) {
qualifier.setFontStyle(fontStyle);
}
return qualifier;
}
/**
* Configures a font substitution catalog
*
* @param substitutions font substitutions
* @throws FOPException if something's wrong with the config data
*/
public void configure(FontSubstitutions substitutions) throws FOPException {
Configuration[] substitutionCfgs = cfg.getChildren("substitution");
for (int i = 0; i < substitutionCfgs.length; i++) {
Configuration fromCfg = substitutionCfgs[i].getChild("from", false);
if (fromCfg == null) {
throw new FOPException("'substitution' element without child 'from' element");
}
Configuration toCfg = substitutionCfgs[i].getChild("to", false);
if (fromCfg == null) {
throw new FOPException("'substitution' element without child 'to' element");
}
FontQualifier fromQualifier = getQualfierFromConfiguration(fromCfg);
FontQualifier toQualifier = getQualfierFromConfiguration(toCfg);
FontSubstitution substitution = new FontSubstitution(fromQualifier, toQualifier);
substitutions.add(substitution);
}
}
}
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