cmsnewcsvfile.java

OpenCms 是一个J2EE的产品

/*
 * File   : $Source: /usr/local/cvs/opencms/src/org/opencms/workplace/explorer/CmsNewCsvFile.java,v $
 * Date   : $Date: 2006/03/31 15:25:51 $
 * Version: $Revision: 1.30 $
 *
 * This library is part of OpenCms -
 * the Open Source Content Mananagement System
 *
 * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.com)
 *
 * 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 Alkacon Software GmbH, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project 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 org.opencms.workplace.explorer;

import org.opencms.file.CmsProperty;
import org.opencms.file.CmsPropertyDefinition;
import org.opencms.file.CmsResource;
import org.opencms.file.CmsResourceFilter;
import org.opencms.file.types.CmsResourceTypePlain;
import org.opencms.i18n.CmsEncoder;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import org.opencms.util.CmsStringUtil;
import org.opencms.util.CmsXsltUtil;
import org.opencms.workplace.CmsWorkplace;
import org.opencms.workplace.CmsWorkplaceException;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.logging.Log;

/**
 * The new resource upload dialog handles the upload of cvs files. They are converted in a first step to xml
 * and in a second step transformed via a xsl stylesheet.<p>
 * 
 * The following files use this class:
 * <ul>
 * <li>/commons/newcvsfile_upload.jsp
 * </ul>
 * <p>
 * 
 * @author Jan Baudisch 
 * 
 * @version $Revision: 1.30 $ 
 * 
 * @since 6.0.0 
 */
public class CmsNewCsvFile extends CmsNewResourceUpload {

    /** Constant for automatically selecting the best fitting delimiter. */
    public static final String BEST_DELIMITER = "best";

    /** Constant for the height of the dialog frame. */
    public static final String FRAMEHEIGHT = "450";

    /** Request parameter name for the CSV content. */
    public static final String PARAM_CSVCONTENT = "csvcontent";

    /** Request parameter name for the delimiter. */
    public static final String PARAM_DELIMITER = "delimiter";

    /** Request parameter name for the XSLT file. */
    public static final String PARAM_XSLTFILE = "xsltfile";

    /** Constant for the xslt file suffix for table transformations. */
    public static final String TABLE_XSLT_SUFFIX = ".table.xslt";

    /** Constant for the tab-value inside delimiter the select. */
    public static final String TABULATOR = "tab";

    /** The log object for this class. */
    private static final Log LOG = CmsLog.getLog(CmsNewCsvFile.class);

    /** The pasted CSV content. */
    private String m_paramCsvContent;

    /** The delimiter to separate the CSV values. */
    private String m_paramDelimiter;

    /** The XSLT File to transform the table with. */
    private String m_paramXsltFile;

    /**
     * Public constructor with JSP action element.<p>
     * 
     * @param jsp an initialized JSP action element
     */
    public CmsNewCsvFile(CmsJspActionElement jsp) {

        super(jsp);
    }

    /**
     * Public constructor with JSP variables.<p>
     * 
     * @param context the JSP page context
     * @param req the JSP request
     * @param res the JSP response
     */
    public CmsNewCsvFile(PageContext context, HttpServletRequest req, HttpServletResponse res) {

        this(new CmsJspActionElement(context, req, res));
    }

    /**
     * Embeds the given content as cdata if neccessary.<p>
     * Contents starting with "<" and ending with ">" are NOT embedded in order to allow content with tags.
     * 
     * @param content the content
     * @return the embedded content
     */
    static String toXmlBody(String content) {

        StringBuffer xmlBody = new StringBuffer(1024);
        content = content.trim();

        if (content.startsWith("<") && content.endsWith(">")) {
            return content;
        } else {
            xmlBody.append("<![CDATA[");
            xmlBody.append(content);
            xmlBody.append("]]>");
        }

        return xmlBody.toString();
    }

    /**
     * Uploads the specified file and transforms it to HTML.<p>
     * 
     * @throws JspException if inclusion of error dialog fails
     */
    public void actionUpload() throws JspException {

        String newResname = "";

        try {
            if (CmsStringUtil.isNotEmpty(getParamCsvContent())) {
                // csv content is pasted in the textarea
                newResname = "csvcontent.html";
                setParamNewResourceName("");
            } else {
                setParamCsvContent(new String(getFileContentFromUpload(), CmsEncoder.ENCODING_ISO_8859_1));
                newResname = getCms().getRequestContext().getFileTranslator().translateResource(
                    CmsResource.getName(getParamResource().replace('\\', '/')));
                newResname = CmsStringUtil.changeFileNameSuffixTo(newResname, "html");
                setParamNewResourceName(newResname);
            }

            setParamResource(newResname);
            setParamResource(computeFullResourceName());
            int resTypeId = OpenCms.getResourceManager().getDefaultTypeForName(newResname).getTypeId();

            // transform csv to html
            String xmlContent = CmsXsltUtil.transformCsvContent(
                getCms(),
                getParamXsltFile(),
                getParamCsvContent(),
                (BEST_DELIMITER.equals(getParamDelimiter()) ? null : getParamDelimiter()));
            byte[] content = xmlContent.getBytes();

            // if xslt file parameter is set, transform the raw html and set the css stylesheet property
            // of the converted file to that of the stylesheet
            CmsProperty styleProp = CmsProperty.getNullProperty();
            if (CmsStringUtil.isNotEmpty(getParamXsltFile())) {
                styleProp = getCms().readPropertyObject(
                    getParamXsltFile(),
                    CmsPropertyDefinition.PROPERTY_STYLESHEET,
                    true);
            }

            try {
                // create the resource
                getCms().createResource(getParamResource(), resTypeId, content, Collections.EMPTY_LIST);
            } catch (CmsException e) {
                // resource was present, overwrite it
                getCms().lockResource(getParamResource());
                getCms().replaceResource(getParamResource(), resTypeId, content, null);
            }
            // copy xslt stylesheet-property to the new resource
            if (!styleProp.isNullProperty()) {
                getCms().writePropertyObject(getParamResource(), styleProp);
            }
        } catch (Throwable e) {
            // error uploading file, show error dialog
            setParamMessage(Messages.get().getBundle(getLocale()).key(Messages.ERR_TABLE_IMPORT_FAILED_0));
            includeErrorpage(this, e);
        }