| /* |
| * 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.render; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.xml.transform.Source; |
| import javax.xml.transform.stream.StreamSource; |
| |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.commons.io.FileUtils; |
| import org.apache.commons.io.IOUtils; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.fop.apps.FOPException; |
| import org.apache.fop.apps.FOUserAgent; |
| import org.apache.fop.apps.FopFactory; |
| import org.apache.fop.fonts.CachedFontInfo; |
| import org.apache.fop.fonts.EmbedFontInfo; |
| import org.apache.fop.fonts.FontCache; |
| import org.apache.fop.fonts.FontInfo; |
| import org.apache.fop.fonts.FontResolver; |
| import org.apache.fop.fonts.FontSetup; |
| import org.apache.fop.fonts.FontTriplet; |
| import org.apache.fop.fonts.FontUtil; |
| import org.apache.fop.fonts.autodetect.FontFileFinder; |
| import org.apache.fop.fonts.autodetect.FontInfoFinder; |
| import org.apache.fop.util.LogUtil; |
| import org.apache.xmlgraphics.util.ClasspathResource; |
| |
| /** |
| * Base Print renderer configurator (mostly handles font configuration) |
| */ |
| public class PrintRendererConfigurator extends AbstractRendererConfigurator |
| implements RendererConfigurator { |
| |
| /** logger instance */ |
| protected static Log log = LogFactory.getLog(PrintRendererConfigurator.class); |
| |
| /** |
| * Default constructor |
| * @param userAgent user agent |
| */ |
| public PrintRendererConfigurator(FOUserAgent userAgent) { |
| super(userAgent); |
| } |
| |
| /** |
| * Builds a list of EmbedFontInfo objects for use with the setup() method. |
| * |
| * @param renderer print renderer |
| * @throws FOPException if something's wrong with the config data |
| */ |
| public void configure(Renderer renderer) throws FOPException { |
| Configuration cfg = getRendererConfig(renderer); |
| if (cfg == null) { |
| return; |
| } |
| |
| PrintRenderer printRenderer = (PrintRenderer)renderer; |
| FontResolver fontResolver = printRenderer.getFontResolver(); |
| if (fontResolver == null) { |
| //Ensure that we have minimal font resolution capabilities |
| fontResolver = FontSetup.createMinimalFontResolver(); |
| } |
| |
| FopFactory factory = userAgent.getFactory(); |
| boolean strict = factory.validateUserConfigStrictly(); |
| FontCache fontCache = factory.getFontCache(); |
| |
| List fontInfoList = buildFontListFromConfiguration(cfg, |
| userAgent.getFontBaseURL(), fontResolver, strict, |
| fontCache); |
| |
| if (fontCache != null && fontCache.hasChanged()) { |
| fontCache.save(); |
| } |
| printRenderer.addFontList(fontInfoList); |
| } |
| |
| /** |
| * Builds a list of EmbedFontInfo objects for use with the setup() method. |
| * |
| * @param cfg Configuration object |
| * @param fontBaseURL the base URL to resolve relative font URLs with |
| * @param fontResolver the FontResolver to use |
| * @param strict true if an Exception should be thrown if an error is found. |
| * @param fontCache the font cache (or null if it is disabled) |
| * @return a List of EmbedFontInfo objects. |
| * @throws FOPException If an error occurs while processing the configuration |
| */ |
| public static List buildFontListFromConfiguration(Configuration cfg, |
| String fontBaseURL, FontResolver fontResolver, |
| boolean strict, FontCache fontCache) throws FOPException { |
| List fontInfoList = new java.util.ArrayList(); |
| |
| Configuration fonts = cfg.getChild("fonts", false); |
| if (fonts != null) { |
| long start = 0; |
| if (log.isDebugEnabled()) { |
| log.debug("Starting font configuration..."); |
| start = System.currentTimeMillis(); |
| } |
| |
| // native o/s search (autodetect) configuration |
| boolean autodetectFonts = (fonts.getChild("auto-detect", false) != null); |
| if (autodetectFonts) { |
| // search in font base if it is defined and |
| // is a directory but don't recurse |
| FontFileFinder fontFileFinder = new FontFileFinder(); |
| if (fontBaseURL != null) { |
| try { |
| File fontBase = FileUtils.toFile(new URL(fontBaseURL)); |
| if (fontBase != null) { |
| //Can only use the font base URL if it's a file URL |
| addFontInfoListFromFileList( |
| fontFileFinder.find(fontBase.getAbsolutePath()), |
| fontInfoList, |
| fontResolver, |
| fontCache |
| ); |
| } |
| } catch (IOException e) { |
| LogUtil.handleException(log, e, strict); |
| } |
| } |
| |
| // native o/s font directory finder |
| try { |
| addFontInfoListFromFileList( |
| fontFileFinder.find(), |
| fontInfoList, |
| fontResolver, |
| fontCache |
| ); |
| } catch (IOException e) { |
| LogUtil.handleException(log, e, strict); |
| } |
| |
| // load fonts from classpath |
| addFontInfoListFromFileList(ClasspathResource.getInstance() |
| .listResourcesOfMimeType("application/x-font"), |
| fontInfoList, fontResolver, fontCache); |
| addFontInfoListFromFileList( |
| ClasspathResource.getInstance() |
| .listResourcesOfMimeType( |
| "application/x-font-truetype"), |
| fontInfoList, fontResolver, fontCache); |
| } |
| |
| // directory (multiple font) configuration |
| Configuration[] directories = fonts.getChildren("directory"); |
| for (int i = 0; i < directories.length; i++) { |
| boolean recursive = directories[i].getAttributeAsBoolean("recursive", false); |
| String directory = null; |
| try { |
| directory = directories[i].getValue(); |
| } catch (ConfigurationException e) { |
| LogUtil.handleException(log, e, strict); |
| continue; |
| } |
| if (directory == null) { |
| LogUtil.handleException(log, |
| new FOPException("directory defined without value"), strict); |
| continue; |
| } |
| FontFileFinder fontFileFinder = new FontFileFinder(recursive ? -1 : 1); |
| try { |
| addFontInfoListFromFileList( |
| fontFileFinder.find(directory), |
| fontInfoList, |
| fontResolver, |
| fontCache |
| ); |
| } catch (IOException e) { |
| LogUtil.handleException(log, e, strict); |
| } |
| } |
| |
| // font file (singular) configuration |
| Configuration[] font = fonts.getChildren("font"); |
| for (int i = 0; i < font.length; i++) { |
| EmbedFontInfo fontInfo = getFontInfoFromConfiguration( |
| font[i], fontResolver, strict, fontCache); |
| if (fontInfo != null) { |
| fontInfoList.add(fontInfo); |
| } |
| } |
| if (log.isDebugEnabled()) { |
| log.debug("Finished font configuration in " |
| + (System.currentTimeMillis() - start) + "ms"); |
| } |
| } |
| return fontInfoList; |
| } |
| |
| /** |
| * Iterates over font file list adding font info to list |
| * @param fontFileList font file list |
| * @param fontInfoList font info list |
| * @param resolver font resolver |
| */ |
| private static void addFontInfoListFromFileList( |
| List fontFileList, List fontInfoList, FontResolver resolver, FontCache fontCache) { |
| for (Iterator iter = fontFileList.iterator(); iter.hasNext();) { |
| URL fontUrl = (URL)iter.next(); |
| // parse font to ascertain font info |
| FontInfoFinder finder = new FontInfoFinder(); |
| EmbedFontInfo fontInfo = finder.find(fontUrl, resolver, fontCache); |
| if (fontInfo != null) { |
| fontInfoList.add(fontInfo); |
| } |
| } |
| } |
| |
| private static void closeSource(Source src) { |
| if (src instanceof StreamSource) { |
| StreamSource streamSource = (StreamSource)src; |
| IOUtils.closeQuietly(streamSource.getInputStream()); |
| IOUtils.closeQuietly(streamSource.getReader()); |
| } |
| } |
| |
| /** |
| * Returns a font info from a font node Configuration definition |
| * |
| * @param fontCfg Configuration object (font node) |
| * @param fontResolver font resolver used to resolve font |
| * @param strict validate configuration strictly |
| * @param fontCache the font cache (or null if it is disabled) |
| * @return font info |
| * @throws FOPException if something's wrong with the config data |
| */ |
| public static EmbedFontInfo getFontInfoFromConfiguration( |
| Configuration fontCfg, FontResolver fontResolver, boolean strict, FontCache fontCache) |
| throws FOPException { |
| String metricsUrl = fontCfg.getAttribute("metrics-url", null); |
| String embedUrl = fontCfg.getAttribute("embed-url", null); |
| |
| if (metricsUrl == null && embedUrl == null) { |
| LogUtil.handleError(log, "Font configuration without metric-url or embed-url", strict); |
| return null; |
| } |
| if (strict) { |
| //This section just checks early whether the URIs can be resolved |
| //Stream are immediately closed again since they will never be used anyway |
| if (embedUrl != null) { |
| Source source = fontResolver.resolve(embedUrl); |
| closeSource(source); |
| if (source == null) { |
| LogUtil.handleError(log, |
| "Failed to resolve font with embed-url '" + embedUrl + "'", strict); |
| return null; |
| } |
| } |
| if (metricsUrl != null) { |
| Source source = fontResolver.resolve(metricsUrl); |
| closeSource(source); |
| if (source == null) { |
| LogUtil.handleError(log, |
| "Failed to resolve font with metric-url '" + metricsUrl + "'", strict); |
| return null; |
| } |
| } |
| } |
| boolean useKerning = fontCfg.getAttributeAsBoolean("kerning", true); |
| |
| EmbedFontInfo fontInfo = null; |
| Configuration[] tripletCfg = fontCfg.getChildren("font-triplet"); |
| // no font triplet info |
| if (tripletCfg.length == 0) { |
| LogUtil.handleError(log, "font without font-triplet", strict); |
| |
| // if not strict try to determine font info from the embed/metrics url |
| File fontFile = CachedFontInfo.getFileFromUrls(new String[] {embedUrl, metricsUrl}); |
| URL fontUrl; |
| try { |
| fontUrl = fontFile.toURI().toURL(); |
| } catch (MalformedURLException e) { |
| // Should never happen |
| log.debug("Malformed Url: " + e.getMessage()); |
| return null; |
| } |
| if (fontFile != null) { |
| FontInfoFinder finder = new FontInfoFinder(); |
| return finder.find(fontUrl, fontResolver, fontCache); |
| } else { |
| return null; |
| } |
| } else { |
| List tripleList = new java.util.ArrayList(); |
| for (int j = 0; j < tripletCfg.length; j++) { |
| try { |
| String name = tripletCfg[j].getAttribute("name"); |
| if (name == null) { |
| LogUtil.handleError(log, "font-triplet without name", strict); |
| continue; |
| } |
| String weightStr = tripletCfg[j].getAttribute("weight"); |
| if (weightStr == null) { |
| LogUtil.handleError(log, "font-triplet without weight", strict); |
| continue; |
| } |
| int weight = FontUtil.parseCSS2FontWeight(weightStr); |
| String style = tripletCfg[j].getAttribute("style"); |
| if (style == null) { |
| LogUtil.handleError(log, "font-triplet without style", strict); |
| continue; |
| } |
| tripleList.add(FontInfo.createFontKey(name, style, weight)); |
| } catch (ConfigurationException e) { |
| LogUtil.handleException(log, e, strict); |
| } |
| } |
| |
| fontInfo = new EmbedFontInfo(metricsUrl, useKerning, tripleList, embedUrl); |
| |
| if (fontCache != null) { |
| if (!fontCache.containsFont(fontInfo)) { |
| fontCache.addFont(fontInfo); |
| } |
| } |
| |
| if (log.isDebugEnabled()) { |
| log.debug("Adding font " + fontInfo.getEmbedFile() |
| + ", metric file " + fontInfo.getMetricsFile()); |
| for (int j = 0; j < tripleList.size(); ++j) { |
| FontTriplet triplet = (FontTriplet) tripleList.get(j); |
| log.debug(" Font triplet " |
| + triplet.getName() + ", " |
| + triplet.getStyle() + ", " |
| + triplet.getWeight()); |
| } |
| } |
| } |
| return fontInfo; |
| } |
| |
| } |
