linksubstitution.java

内容管理

/*
* File   : $Source: /usr/local/cvs/opencms/src/com/opencms/util/LinkSubstitution.java,v $
* Date   : $Date: 2003/04/01 15:20:17 $
* Version: $Revision: 1.27 $
*
* This library is part of OpenCms -
* the Open Source Content Mananagement System
*
* Copyright (C) 2001  The OpenCms Group
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* For further information about OpenCms, please see the
* OpenCms Website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
package com.opencms.util;

import com.opencms.boot.I_CmsLogChannels;
import com.opencms.core.A_OpenCms;
import com.opencms.core.CmsException;
import com.opencms.core.CmsStaticExportProperties;
import com.opencms.core.OpenCms;
import com.opencms.file.CmsObject;
import com.opencms.file.CmsStaticExport;
import com.opencms.htmlconverter.CmsHtmlConverter;

import java.net.URL;
import java.util.Vector;

import javax.servlet.http.HttpServletRequest;

import org.apache.oro.text.perl.MalformedPerl5PatternException;
import org.apache.oro.text.perl.Perl5Util;

/**
 * 
 * 
 * @author Hanjo Riege
 * @version 1.0
 */

public class LinkSubstitution {

    /**
     * Reference to the CmsElementCache object containing locators for all
     * URIs and elements in cache.
     */
    private static Perl5Util c_perlUtil = null;
    
    /**
     * String to configure the CmsHtmlConverter
     */
    private static String m_converterConfiguration = "<?xml version=\"1.0\"?>"+
            "<converterconfig>"+
            "   <defaults>"+
            "       <xhtmloutput value=\"false\"/>"+
            "       <globalprefix value=\"\"/>"+
            "       <globalsuffix value=\"\"/>"+
            "       <globaladdeveryline value=\"false\"/>"+
            "       <usebrackets value=\"true\" openbracket=\"#(\" closebracket=\")#\"/>"+
            "       <encodequotationmarks value=\"false\"/>"+
            "   </defaults>"+
            "   <replacecontent>"+
            "       <string content=\"&amp;mdash;\" replace=\"$mdash$\"/>"+
            "       <string content=\"&amp;ndash;\" replace=\"$ndash$\"/>"+
            "       <string content=\"&amp;bull;\" replace=\"$bull$\"/>"+
            "       <string content=\"&#\" replace=\"$Sonder$\"/>"+
            "   </replacecontent>"+
            "   <replacestrings usedefaults=\"true\">"+
            "       <string content=\"$Sonder$\" replace=\"&#\"/>"+
            "       <string content=\"$mdash$\" replace=\"&amp;mdash;\"/>"+
            "       <string content=\"$ndash$\" replace=\"&amp;ndash;\"/>"+
            "       <string content=\"$bull$\" replace=\"&amp;bull;\"/>"+
            "   </replacestrings>"+
            "   <inlinetags>"+
            "       <tag name=\"img\"/>"+
            "       <tag name=\"br\"/>"+
            "       <tag name=\"hr\"/>"+
            "       <tag name=\"input\"/>"+
            "       <tag name=\"frame\"/>"+
            "       <tag name=\"meta\"/>"+
            "   </inlinetags>"+
            "   <replacetags usedefaults=\"true\">"+
            "       <tag name=\"img\" attrib=\"src\" replacestarttag=\"]]&gt;&lt;LINK&gt;&lt;![CDATA[$parameter$]]&gt;&lt;/LINK&gt;&lt;![CDATA[\" parameter=\"src\" replaceparamattr=\"true\"/>"+
            "       <tag name=\"a\" attrib=\"href\" replacestarttag=\"]]&gt;&lt;LINK&gt;&lt;![CDATA[$parameter$]]&gt;&lt;/LINK&gt;&lt;![CDATA[\" replaceendtag=\"&lt;/a&gt;\" parameter=\"href\" replaceparamattr=\"true\"/>"+
            "   </replacetags>"+
            "</converterconfig>";
     

    public LinkSubstitution() {
        c_perlUtil = new Perl5Util();
    }
    
    /**
     * Parses the content of the body tag of a html page. It is the same as
     * substituteEditorContent except that it expects only the part of the
     * html page between the body tags.
     */
    public String substituteEditorContentBody(CmsObject cms, String body) throws CmsException{

        // we have to prepare the content for the tidy
        body = "<html><head></head><body>" + body + "</body></html>";
        // start the tidy
        String result = substituteEditorContent(cms, body);
        // remove the preparetags
        int startIndex = result.indexOf("<body");
        startIndex = result.indexOf(">", startIndex + 1) + 1;
        int endIndex = result.lastIndexOf("</body>");
        if(startIndex > 0) {
            result = result.substring(startIndex, endIndex);
        }
        return result;
    }

     /**
     * Parses the html content for the editor. It replaces the links in <a href=""
     * and in &lt;image src="". They will be replaced with ]]&gt;&lt;LINK&gt; path in opencms &lt;LINK&gt;&lt;![CDATA[.<p>
     * 
     * This method is used for database imports of OpenCms versions &lt; 5.0<p>
     * 
     * @param cms the CmsObject
     * @param content the html content fragment
     * @param webappUrl the old web app URL, e.g. http://localhost:8080/opencms/opencms/
     * @param fileName the path and name of current file
     * @return String the converted content
     */
    public String substituteEditorContent(CmsObject cms, String content)throws CmsException{
        return substituteEditorContent(cms, content, null, null);
    }

    public String substituteContentBody(String body, String webappUrl, String fileName) throws CmsException {
        
        // prepare the content for the JTidy
        body = "<html><head></head><body>" + body + "</body></html>";
        CmsHtmlConverter converter = new CmsHtmlConverter();
        try {
            // check errors...
            if (converter.hasErrors(body)) {
                String errors = converter.showErrors(body);
                throw new CmsException(errors);
            }
            // configure the converter
            converter.setConverterConfString(m_converterConfiguration);
            URL url = new URL(webappUrl + fileName);
            String servletPrefix = A_OpenCms.getOpenCmsContext();
            converter.setServletPrefix(servletPrefix.substring(0, servletPrefix.lastIndexOf("/")), null);
            converter.setOriginalUrl(url);
            // convert html code
            body = converter.convertHTML(body);
        } catch (Exception e) {
            e.printStackTrace(System.err);
            throw new CmsException(
                "[" + this.getClass().getName() + "] can't convert the editor content:" + e.toString());
        }
        // remove the preparetags
        int startIndex = body.indexOf("<body");
        startIndex = body.indexOf(">", startIndex + 1) + 1;
        int endIndex = body.lastIndexOf("</body>");
        if (startIndex > 0) {
            body = body.substring(startIndex, endIndex);
        }
        return body;
    }

   /**
     * parses the html content from the editor. It replaces the links in <a href=""
     * and in <image src="". They will be replaced with ]]><LINK> path in opencms <LINK><![CDATA[
     */
    public String substituteEditorContent(CmsObject cms, String content, String path, String relativeRoot)throws CmsException{
        CmsHtmlConverter converter = new CmsHtmlConverter();
        String retValue = null;
        if(path == null || "".equals(path)){