| /* |
| * Copyright 1999-2004 The Apache Software Foundation |
| * |
| * Licensed 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. |
| */ |
| |
| package org.apache.naming.util; |
| |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Locale; |
| |
| import javax.naming.NamingException; |
| import javax.naming.directory.Attribute; |
| import javax.naming.directory.Attributes; |
| // import org.apache.naming.resources.Resource; |
| // import org.apache.naming.resources.ResourceAttributes; |
| |
| /** |
| * @author <a href="mailto:remm@apache.org">Remy Maucherat</a> |
| * @author Costin Manolache |
| */ |
| public class AttributeHelper |
| { |
| /** |
| * Content length. |
| */ |
| public static final String CONTENT_LENGTH = "getcontentlength"; |
| public static final String ALTERNATE_CONTENT_LENGTH = "content-length"; |
| |
| /** |
| * MIME type of the content. |
| */ |
| public static final String CONTENT_TYPE = "getcontenttype"; |
| public static final String ALTERNATE_TYPE = "content-type"; |
| |
| |
| /** |
| * Last modification date. XXX Use standard LDAP att name |
| */ |
| public static final String LAST_MODIFIED = "getlastmodified"; |
| public static final String ALTERNATE_LAST_MODIFIED = "last-modified"; |
| /** |
| * Date formats using for Date parsing. |
| */ |
| protected static final SimpleDateFormat formats[] = { |
| new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.US), |
| new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US), |
| new SimpleDateFormat("EEEEEE, dd-MMM-yy HH:mm:ss zzz", Locale.US), |
| new SimpleDateFormat("EEE MMMM d HH:mm:ss yyyy", Locale.US) |
| }; |
| |
| |
| /** |
| * Get content length. |
| * |
| * @return content length value |
| */ |
| public static long getContentLength(Attributes attributes) { |
| long contentLength=-1; |
| if (contentLength != -1L) |
| return contentLength; |
| if (attributes != null) { |
| Attribute attribute = attributes.get(CONTENT_LENGTH); |
| if( attribute==null ) |
| attribute=attributes.get(ALTERNATE_CONTENT_LENGTH ); |
| if (attribute != null) { |
| try { |
| Object value = attribute.get(); |
| if (value instanceof Long) { |
| contentLength = ((Long) value).longValue(); |
| } else { |
| try { |
| contentLength = Long.parseLong(value.toString()); |
| } catch (NumberFormatException e) { |
| ; // Ignore |
| } |
| } |
| } catch (NamingException e) { |
| ; // No value for the attribute |
| } |
| } |
| } |
| return contentLength; |
| } |
| |
| /** |
| * Return the content type value. |
| */ |
| public static String getContentType(Attributes attributes) { |
| Attribute attribute = attributes.get(CONTENT_TYPE); |
| if( attribute == null ) return null; |
| |
| try { |
| String s= attribute.get().toString(); |
| return s; |
| } catch (Exception e) { |
| // Shouldn't happen, unless the attribute has no value |
| } |
| return null; |
| } |
| |
| /** Find the last modified of an entry. It's using various common |
| * attribute names, and support Long, Date, String att values. |
| */ |
| public static long getLastModified( Attributes attributes ) { |
| long lastModified=-1; |
| Date lastModifiedDate; |
| |
| Attribute attribute = attributes.get(LAST_MODIFIED); |
| if( attribute==null ) |
| attribute=attributes.get(ALTERNATE_LAST_MODIFIED); |
| |
| if (attribute != null) { |
| try { |
| Object value = attribute.get(); |
| if (value instanceof Long) { |
| lastModified = ((Long) value).longValue(); |
| } else if (value instanceof Date) { |
| lastModified = ((Date) value).getTime(); |
| lastModifiedDate = (Date) value; |
| } else { |
| String lastModifiedDateValue = value.toString(); |
| Date result = null; |
| // Parsing the HTTP Date |
| for (int i = 0; (result == null) && |
| (i < formats.length); i++) { |
| try { |
| result = |
| formats[i].parse(lastModifiedDateValue); |
| } catch (ParseException e) { |
| ; |
| } |
| } |
| if (result != null) { |
| lastModified = result.getTime(); |
| lastModifiedDate = result; |
| } |
| } |
| } catch (NamingException e) { |
| ; // No value for the attribute |
| } |
| } |
| return lastModified; |
| } |
| |
| } |