com.liferay.journal.web.util.ExportArticleUtil.java Source code

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Here is the source code for com.liferay.journal.web.util.ExportArticleUtil.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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.
 */

package com.liferay.journal.web.util;

import com.liferay.document.library.kernel.util.DLUtil;
import com.liferay.journal.model.JournalArticleDisplay;
import com.liferay.journal.util.JournalContent;
import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream;
import com.liferay.portal.kernel.language.LanguageUtil;
import com.liferay.portal.kernel.portlet.PortletRequestModel;
import com.liferay.portal.kernel.servlet.ServletResponseUtil;
import com.liferay.portal.kernel.theme.ThemeDisplay;
import com.liferay.portal.kernel.util.ArrayUtil;
import com.liferay.portal.kernel.util.ContentTypes;
import com.liferay.portal.kernel.util.MimeTypesUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.Portal;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portlet.documentlibrary.util.DocumentConversionUtil;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.portlet.PortletPreferences;
import javax.portlet.PortletRequest;
import javax.portlet.PortletResponse;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Eudaldo Alonso
 */
@Component(service = ExportArticleUtil.class)
public class ExportArticleUtil {

    /**
     * @deprecated As of 1.5.0, replaced by {@link #sendFile(String,
     *             PortletRequest, PortletResponse)}
     */
    @Deprecated
    public void sendFile(PortletRequest portletRequest, PortletResponse portletResponse) throws IOException {

        String targetExtension = ParamUtil.getString(portletRequest, "targetExtension");

        PortletPreferences portletPreferences = portletRequest.getPreferences();

        String[] allowedExtensions = StringUtil.split(portletPreferences.getValue("extensions", null));

        if (Validator.isNull(targetExtension) || !ArrayUtil.contains(allowedExtensions, targetExtension)) {

            return;
        }

        sendFile(targetExtension, portletRequest, portletResponse);
    }

    public void sendFile(String targetExtension, PortletRequest portletRequest, PortletResponse portletResponse)
            throws IOException {

        if (Validator.isNull(targetExtension)) {
            return;
        }

        long groupId = ParamUtil.getLong(portletRequest, "groupId");
        String articleId = ParamUtil.getString(portletRequest, "articleId");

        String languageId = LanguageUtil.getLanguageId(portletRequest);
        PortletRequestModel portletRequestModel = new PortletRequestModel(portletRequest, portletResponse);
        ThemeDisplay themeDisplay = (ThemeDisplay) portletRequest.getAttribute(WebKeys.THEME_DISPLAY);
        HttpServletRequest request = _portal.getHttpServletRequest(portletRequest);
        HttpServletResponse response = _portal.getHttpServletResponse(portletResponse);

        JournalArticleDisplay articleDisplay = _journalContent.getDisplay(groupId, articleId, null, "export",
                languageId, 1, portletRequestModel, themeDisplay);

        int pages = articleDisplay.getNumberOfPages();

        StringBundler sb = new StringBundler(pages + 12);

        sb.append("<html>");

        sb.append("<head>");
        sb.append("<meta content=\"");
        sb.append(ContentTypes.TEXT_HTML_UTF8);
        sb.append("\" http-equiv=\"content-type\" />");
        sb.append("<base href=\"");
        sb.append(themeDisplay.getPortalURL());
        sb.append("\" />");
        sb.append("</head>");

        sb.append("<body>");

        sb.append(articleDisplay.getContent());

        for (int i = 2; i <= pages; i++) {
            articleDisplay = _journalContent.getDisplay(groupId, articleId, "export", languageId, i, themeDisplay);

            sb.append(articleDisplay.getContent());
        }

        sb.append("</body>");
        sb.append("</html>");

        InputStream is = new UnsyncByteArrayInputStream(sb.toString().getBytes(StringPool.UTF8));

        String title = articleDisplay.getTitle();
        String sourceExtension = "html";

        String fileName = title.concat(StringPool.PERIOD).concat(sourceExtension);

        String contentType = ContentTypes.TEXT_HTML;

        String id = DLUtil.getTempFileId(articleDisplay.getId(), String.valueOf(articleDisplay.getVersion()),
                languageId);

        File convertedFile = DocumentConversionUtil.convert(id, is, sourceExtension, targetExtension);

        if (convertedFile != null) {
            targetExtension = StringUtil.toLowerCase(targetExtension);

            fileName = title.concat(StringPool.PERIOD).concat(targetExtension);

            contentType = MimeTypesUtil.getContentType(fileName);

            is = new FileInputStream(convertedFile);
        }

        ServletResponseUtil.sendFile(request, response, fileName, is, contentType);
    }

    @Reference(unbind = "-")
    protected void setJournalContent(JournalContent journalContent) {
        _journalContent = journalContent;
    }

    private JournalContent _journalContent;

    @Reference
    private Portal _portal;

}