| package org.apache.archiva.webdav.util; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.commons.lang.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Service; |
| |
| import javax.annotation.PostConstruct; |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.net.URL; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.StringTokenizer; |
| |
| /** |
| * MimeTypes |
| * |
| * |
| */ |
| @Service( "mimeTpes" ) |
| public class MimeTypes |
| { |
| private static final String DEFAULT_MIME_TYPE = "application/octet-stream"; |
| |
| private String resource = "org/apache/archiva/webdav/util/mime.types"; |
| |
| private Map<String, String> mimeMap = new HashMap<String, String>(); |
| |
| private Logger log = LoggerFactory.getLogger( MimeTypes.class ); |
| |
| /** |
| * Get the Mime Type for the provided filename. |
| * |
| * @param filename the filename to obtain the mime type for. |
| * @return a mime type String, or null if filename is null, has no extension, or no mime type is associated with it. |
| */ |
| public String getMimeType( String filename ) |
| { |
| String value = null; |
| if ( !StringUtils.isEmpty( filename ) ) |
| { |
| int index = filename.lastIndexOf( '.' ); |
| |
| if ( index >= 0 ) |
| { |
| value = (String) mimeMap.get( filename.substring( index + 1 ).toLowerCase() ); |
| } |
| } |
| |
| if ( value == null ) |
| { |
| value = DEFAULT_MIME_TYPE; |
| } |
| |
| return value; |
| |
| } |
| |
| @PostConstruct |
| public void initialize() |
| { |
| load( resource ); |
| } |
| |
| public void load( File file ) |
| { |
| if ( !file.exists() || !file.isFile() || !file.canRead() ) |
| { |
| log.error( "Unable to load mime types from file " + file.getAbsolutePath() + " : not a readable file." ); |
| return; |
| } |
| |
| FileInputStream fis = null; |
| |
| try |
| { |
| fis = new FileInputStream( file ); |
| } |
| catch ( FileNotFoundException e ) |
| { |
| log.error( "Unable to load mime types from file " + file.getAbsolutePath() + " : " + e.getMessage(), e ); |
| } |
| finally |
| { |
| IOUtils.closeQuietly( fis ); |
| } |
| } |
| |
| public void load( String resourceName ) |
| { |
| ClassLoader cloader = this.getClass().getClassLoader(); |
| |
| /* Load up the mime types table */ |
| URL mimeURL = cloader.getResource( resourceName ); |
| |
| if ( mimeURL == null ) |
| { |
| throw new IllegalStateException( "Unable to find resource " + resourceName ); |
| } |
| |
| InputStream mimeStream = null; |
| |
| try |
| { |
| mimeStream = mimeURL.openStream(); |
| load( mimeStream ); |
| } |
| catch ( IOException e ) |
| { |
| log.error( "Unable to load mime map " + resourceName + " : " + e.getMessage(), e ); |
| } |
| finally |
| { |
| IOUtils.closeQuietly( mimeStream ); |
| } |
| } |
| |
| public void load( InputStream mimeStream ) |
| { |
| mimeMap.clear(); |
| |
| InputStreamReader reader = null; |
| BufferedReader buf = null; |
| |
| try |
| { |
| reader = new InputStreamReader( mimeStream ); |
| buf = new BufferedReader( reader ); |
| String line = null; |
| |
| while ( ( line = buf.readLine() ) != null ) |
| { |
| line = line.trim(); |
| |
| if ( line.length() == 0 ) |
| { |
| // empty line. skip it |
| continue; |
| } |
| |
| if ( line.startsWith( "#" ) ) |
| { |
| // Comment. skip it |
| continue; |
| } |
| |
| StringTokenizer tokenizer = new StringTokenizer( line ); |
| if ( tokenizer.countTokens() > 1 ) |
| { |
| String type = tokenizer.nextToken(); |
| while ( tokenizer.hasMoreTokens() ) |
| { |
| String extension = tokenizer.nextToken().toLowerCase(); |
| this.mimeMap.put( extension, type ); |
| } |
| } |
| } |
| } |
| catch ( IOException e ) |
| { |
| log.error( "Unable to read mime types from input stream : " + e.getMessage(), e ); |
| } |
| finally |
| { |
| IOUtils.closeQuietly( buf ); |
| IOUtils.closeQuietly( reader ); |
| } |
| } |
| |
| public String getResource() |
| { |
| return resource; |
| } |
| |
| public void setResource( String resource ) |
| { |
| this.resource = resource; |
| } |
| } |