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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;
import java.net.MalformedURLException;
import java.util.List;
import java.util.regex.Pattern;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fonts.substitute.FontSubstitutions;
import org.apache.fop.fonts.substitute.FontSubstitutionsConfigurator;
import org.apache.fop.util.LogUtil;
/**
* Configurator of the FontManager
*/
public class FontManagerConfigurator {
/** logger instance */
private static Log log = LogFactory.getLog(FontManagerConfigurator.class);
private Configuration cfg;
/**
* Main constructor
* @param cfg the font manager configuration object
*/
public FontManagerConfigurator(Configuration cfg) {
this.cfg = cfg;
}
/**
* Initializes font settings from the user configuration
* @param fontManager a font manager
* @param strict true if strict checking of the configuration is enabled
* @throws FOPException if an exception occurs while processing the configuration
*/
public void configure(FontManager fontManager, boolean strict) throws FOPException {
// caching (fonts)
if (cfg.getChild("use-cache", false) != null) {
try {
fontManager.setUseCache(
cfg.getChild("use-cache").getValueAsBoolean());
} catch (ConfigurationException mfue) {
LogUtil.handleException(log, mfue, true);
}
}
if (cfg.getChild("font-base", false) != null) {
try {
fontManager.setFontBaseURL(
cfg.getChild("font-base").getValue(null));
} catch (MalformedURLException mfue) {
LogUtil.handleException(log, mfue, true);
}
}
// global font configuration
Configuration fontsCfg = cfg.getChild("fonts", false);
if (fontsCfg != null) {
// font substitution
Configuration substitutionsCfg = fontsCfg.getChild("substitutions", false);
if (substitutionsCfg != null) {
FontSubstitutionsConfigurator fontSubstitutionsConfigurator
= new FontSubstitutionsConfigurator(substitutionsCfg);
FontSubstitutions substitutions = new FontSubstitutions();
fontSubstitutionsConfigurator.configure(substitutions);
fontManager.setFontSubstitutions(substitutions);
}
// referenced fonts (fonts which are not to be embedded)
Configuration referencedFontsCfg = fontsCfg.getChild("referenced-fonts", false);
if (referencedFontsCfg != null) {
createReferencedFontsMatcher(referencedFontsCfg, strict, fontManager);
}
}
}
private static void createReferencedFontsMatcher(Configuration referencedFontsCfg,
boolean strict, FontManager fontManager) throws FOPException {
List matcherList = new java.util.ArrayList();
Configuration[] matches = referencedFontsCfg.getChildren("match");
for (int i = 0; i < matches.length; i++) {
try {
matcherList.add(new FontFamilyRegExFontTripletMatcher(
matches[i].getAttribute("font-family")));
} catch (ConfigurationException ce) {
LogUtil.handleException(log, ce, strict);
continue;
}
}
FontTriplet.Matcher orMatcher = new OrFontTripletMatcher(
(FontTriplet.Matcher[])matcherList.toArray(
new FontTriplet.Matcher[matcherList.size()]));
fontManager.setReferencedFontsMatcher(orMatcher);
}
private static class OrFontTripletMatcher implements FontTriplet.Matcher {
private FontTriplet.Matcher[] matchers;
public OrFontTripletMatcher(FontTriplet.Matcher[] matchers) {
this.matchers = matchers;
}
/** {@inheritDoc} */
public boolean matches(FontTriplet triplet) {
for (int i = 0, c = matchers.length; i < c; i++) {
if (matchers[i].matches(triplet)) {
return true;
}
}
return false;
}
}
private static class FontFamilyRegExFontTripletMatcher implements FontTriplet.Matcher {
private Pattern regex;
public FontFamilyRegExFontTripletMatcher(String regex) {
this.regex = Pattern.compile(regex);
}
/** {@inheritDoc} */
public boolean matches(FontTriplet triplet) {
return regex.matcher(triplet.getName()).matches();
}
}
}
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