/**
* 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.knowledge.base.internal.importer.util;
import com.liferay.document.library.kernel.exception.NoSuchFileEntryException;
import com.liferay.knowledge.base.configuration.KBGroupServiceConfiguration;
import com.liferay.knowledge.base.constants.KBPortletKeys;
import com.liferay.knowledge.base.exception.KBArticleImportException;
import com.liferay.knowledge.base.model.KBArticle;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.module.configuration.ConfigurationProviderUtil;
import com.liferay.portal.kernel.portletfilerepository.PortletFileRepositoryUtil;
import com.liferay.portal.kernel.repository.model.FileEntry;
import com.liferay.portal.kernel.util.MimeTypesUtil;
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.zip.ZipReader;
import java.io.InputStream;
import java.util.Map;
/**
* @author James Hinkey
* @author Sergio González
*/
public class KBArticleImporterUtil {
public static FileEntry addImageFileEntry(
String imageFileName, long userId, KBArticle kbArticle,
ZipReader zipReader, Map<String, FileEntry> fileEntriesMap)
throws PortalException {
KBGroupServiceConfiguration kbGroupServiceConfiguration =
ConfigurationProviderUtil.getGroupConfiguration(
KBGroupServiceConfiguration.class, kbArticle.getGroupId());
try {
validateImageFileExtension(
imageFileName,
kbGroupServiceConfiguration.
markdownImporterImageFileExtensions());
}
catch (KBArticleImportException kbaie) {
if (_log.isWarnEnabled()) {
_log.warn(
"Unsupported image file suffix used in ZIP file " +
imageFileName);
}
}
try {
String zipReaderFileName = getZipReaderFileName(
kbGroupServiceConfiguration.markdownImporterImageFolder(),
imageFileName);
return addImageFileEntry(
userId, kbArticle, imageFileName,
zipReader.getEntryAsInputStream(zipReaderFileName),
fileEntriesMap);
}
catch (Exception e) {
StringBuilder sb = new StringBuilder(4);
sb.append("Unable to import image file ");
sb.append(imageFileName);
sb.append(": ");
sb.append(e.getLocalizedMessage());
throw new KBArticleImportException(sb.toString());
}
}
public static String extractImageFileName(String html) {
String imageSrc = null;
String[] lines = StringUtil.split(html, StringPool.QUOTE);
for (int i = 0; i < lines.length; i++) {
if (lines[i].endsWith("src=")) {
if ((i + 1) < lines.length) {
imageSrc = lines[i + 1];
}
break;
}
}
if (Validator.isNull(imageSrc)) {
if (_log.isWarnEnabled()) {
_log.warn("Missing src attribute for image " + html);
}
return null;
}
String[] paths = StringUtil.split(imageSrc, StringPool.SLASH);
if (paths.length < 1) {
if (_log.isWarnEnabled()) {
_log.warn(
"Expected image file path to contain a slash " + html);
}
return null;
}
return paths[paths.length - 1];
}
public static void validateImageFileExtension(
String imageFileName, String[] fileExtensions)
throws KBArticleImportException {
boolean validImageFileExtension = false;
for (String fileExtension : fileExtensions) {
if (StringPool.STAR.equals(fileExtension) ||
StringUtil.endsWith(imageFileName, fileExtension)) {
validImageFileExtension = true;
break;
}
}
if (!validImageFileExtension) {
throw new KBArticleImportException(imageFileName);
}
}
protected static FileEntry addImageFileEntry(
long userId, KBArticle kbArticle, String imageFileName,
InputStream inputStream, Map<String, FileEntry> fileEntriesMap)
throws PortalException {
FileEntry fileEntry = fileEntriesMap.get(imageFileName);
if (fileEntry != null) {
return fileEntry;
}
String mimeType = MimeTypesUtil.getContentType(imageFileName);
try {
PortletFileRepositoryUtil.getPortletFileEntry(
kbArticle.getGroupId(), kbArticle.getAttachmentsFolderId(),
imageFileName);
PortletFileRepositoryUtil.deletePortletFileEntry(
kbArticle.getGroupId(), kbArticle.getAttachmentsFolderId(),
imageFileName);
}
catch (NoSuchFileEntryException nsfee) {
// LPS-52675
if (_log.isDebugEnabled()) {
_log.debug(nsfee, nsfee);
}
}
fileEntry = PortletFileRepositoryUtil.addPortletFileEntry(
kbArticle.getGroupId(), userId, KBArticle.class.getName(),
kbArticle.getClassPK(), KBPortletKeys.KNOWLEDGE_BASE_ARTICLE,
kbArticle.getAttachmentsFolderId(), inputStream, imageFileName,
mimeType, false);
fileEntriesMap.put(imageFileName, fileEntry);
return fileEntry;
}
protected static String getZipReaderFileName(
String dirName, String fileName) {
if (dirName.endsWith(StringPool.SLASH)) {
return dirName + fileName;
}
else {
return dirName + StringPool.SLASH + fileName;
}
}
private static final Log _log = LogFactoryUtil.getLog(
KBArticleImporterUtil.class);
}