| /* |
| * Copyright 1999-2005 The Apache Software Foundation. |
| * |
| * Licensed 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. |
| */ |
| |
| package org.apache.cocoon.components.modules.input; |
| |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Vector; |
| |
| /** |
| * RealPathModule provides a real filesystem path for a virtual |
| * context-relative path. If this mapping cannot be performed (e.g. Cocoon is |
| * running in a .war file), <code>null</code> will be returned. |
| * |
| * @version $Id$ |
| */ |
| |
| /* |
| * Note: the primary use for this is to support external code that wants a |
| * filesystem path. For example, The FOP 0.20.x serializer doesn't like |
| * relative image paths, and doesn't understand Cocoon URLs (context:, cocoon: |
| * etc). So we pass the *2fo.xsl stylesheet a real filesystem path to where we |
| * keep our images: |
| * |
| * <map:transform src="skins/{forrest:skin}/xslt/fo/document2fo.xsl"> |
| * <map:parameter name="basedir" value="{realpath:resources}/"/> |
| * </map:transform> |
| * |
| * And then prepend this to all image paths: |
| * ... |
| * <xsl:param name="basedir" select="''"/> |
| * ... |
| * <xsl:template match="img"> |
| * <xsl:variable name="imgpath" select="concat($basedir, @src)"/> |
| * <fo:external-graphic src="{$imgpath}" ... |
| * ... |
| * </xsl:template> |
| */ |
| public class RealPathModule extends AbstractInputModule implements ThreadSafe { |
| |
| private final static Vector returnNames; |
| static { |
| Vector tmp = new Vector(); |
| tmp.add("realPath"); |
| returnNames = tmp; |
| } |
| |
| public Object getAttribute(String name, Configuration modeConf, Map objectModel) |
| throws ConfigurationException { |
| String uri = ObjectModelHelper.getContext(objectModel).getRealPath(name); |
| if (uri == null) { |
| return null; |
| } |
| |
| int lastCharPos = uri.length() - 1; |
| if (uri.charAt(lastCharPos) == '\\') { |
| uri = uri.substring(0, lastCharPos); |
| } |
| return uri; |
| } |
| |
| public Iterator getAttributeNames(Configuration modeConf, Map objectModel) |
| throws ConfigurationException { |
| return RealPathModule.returnNames.iterator(); |
| } |
| |
| public Object[] getAttributeValues( String name, Configuration modeConf, Map objectModel ) |
| throws ConfigurationException { |
| return new Object[] { getAttribute(name, modeConf, objectModel) }; |
| } |
| } |