001/* 002 * (C) Copyright 2006-2013 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nuxeo - initial API and implementation 016 * 017 */ 018package org.nuxeo.ecm.platform.convert; 019 020import java.io.Serializable; 021import java.util.HashMap; 022import java.util.Map; 023 024import org.nuxeo.common.utils.FileUtils; 025import org.nuxeo.ecm.core.api.Blob; 026import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 027import org.nuxeo.ecm.core.api.blobholder.SimpleBlobHolder; 028import org.nuxeo.ecm.core.convert.api.ConversionService; 029import org.nuxeo.ecm.platform.mimetype.interfaces.MimetypeRegistry; 030import org.nuxeo.runtime.api.Framework; 031 032/** 033 * @since 5.7 034 */ 035public class ConvertHelper { 036 037 protected String findConverter(Blob blob, String destMimeType) { 038 MimetypeRegistry mtr = Framework.getLocalService(MimetypeRegistry.class); 039 String srcMt = mtr.getMimetypeFromFilenameAndBlobWithDefault(blob.getFilename(), blob, blob.getMimeType()); 040 blob.setMimeType(srcMt); 041 ConversionService cs = Framework.getLocalService(ConversionService.class); 042 return cs.getConverterName(srcMt, destMimeType); 043 } 044 045 protected Blob applyConverter(Blob blob, String converter, String destMimeType, Map<String, Serializable> params) { 046 ConversionService cs = Framework.getLocalService(ConversionService.class); 047 if (params == null) { 048 params = new HashMap<String, Serializable>(); 049 params.put("updateDocumentIndex", Boolean.TRUE); 050 } 051 BlobHolder bh = cs.convert(converter, new SimpleBlobHolder(blob), params); 052 053 if (bh == null || bh.getBlob() == null) { 054 return blob; 055 } else { 056 Blob result = bh.getBlob(); 057 MimetypeRegistry mtr = Framework.getLocalService(MimetypeRegistry.class); 058 String filename = FileUtils.getFileNameNoExt(blob.getFilename()); 059 filename = filename + "." + mtr.getExtensionsFromMimetypeName(destMimeType).get(0); 060 result.setFilename(filename); 061 return result; 062 } 063 } 064 065 public Blob convertBlob(Blob blob, String mimeType) { 066 String converter = findConverter(blob, mimeType); 067 if (converter != null) { 068 return applyConverter(blob, converter, mimeType, null); 069 } 070 return blob; 071 } 072 073 public Blob convertBlob(Blob blob, String mimeType, Map<String, Serializable> params) { 074 String converter = findConverter(blob, mimeType); 075 if (converter != null) { 076 return applyConverter(blob, converter, mimeType, params); 077 } 078 return blob; 079 } 080}