mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-06-16 17:55:15 +00:00
467bc8d3c8
TODO: Fix the "Modify Content Properties" to include the encoding as a changeable option.
Modified other entry points of content into the system. All calls to ContentWriter.setEncoding("UTF-8") need some serious examination.
It is no longer necessary to assume anything about the encoding. The worst case scenario is that we guess the encoding from the stream
without giving the user the chance to change it. This works for most non-interactive scenarios like CIFS, WebDAV and FTP, now.
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6113 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
117 lines
4.0 KiB
Java
117 lines
4.0 KiB
Java
/*
|
|
* Copyright (C) 2005-2007 Alfresco Software Limited.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
|
|
* This program 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 General Public License for more details.
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
* As a special exception to the terms and conditions of version 2.0 of
|
|
* the GPL, you may redistribute this Program in connection with Free/Libre
|
|
* and Open Source Software ("FLOSS") applications as described in Alfresco's
|
|
* FLOSS exception. You should have recieved a copy of the text describing
|
|
* the FLOSS exception, and it is also available here:
|
|
* http://www.alfresco.com/legal/licensing"
|
|
*/
|
|
package org.alfresco.repo.content.encoding;
|
|
|
|
import java.io.InputStream;
|
|
import java.nio.charset.Charset;
|
|
import java.util.List;
|
|
|
|
import org.alfresco.encoding.CharactersetFinder;
|
|
import org.alfresco.service.cmr.repository.MimetypeService;
|
|
|
|
/**
|
|
* Utility bean to guess the charset given a stream and a mimetype.
|
|
*
|
|
* @since 2.1
|
|
* @author Derek Hulley
|
|
*/
|
|
public class ContentCharsetFinder
|
|
{
|
|
private Charset defaultCharset = Charset.defaultCharset();
|
|
private MimetypeService mimetypeService;
|
|
private List<CharactersetFinder> charactersetFinders;
|
|
|
|
/**
|
|
* Override the system default charset. Where the characterset cannot be determined for
|
|
* a mimetype and input stream, this mimetype will be used. The default is 'UTF-8'.
|
|
*
|
|
* @param defaultCharset the default characterset
|
|
*/
|
|
public void setDefaultCharset(String defaultCharset)
|
|
{
|
|
this.defaultCharset = Charset.forName(defaultCharset);
|
|
}
|
|
|
|
/**
|
|
* Set the mimetype service that will help determine if a particular mimetype can be
|
|
* treated as encoded text or not.
|
|
*/
|
|
public void setMimetypeService(MimetypeService mimetypeService)
|
|
{
|
|
this.mimetypeService = mimetypeService;
|
|
}
|
|
|
|
/**
|
|
* Set the list of characterset finder to execute, in order, for text based content.
|
|
* @param charactersetFinders a list of finders
|
|
*/
|
|
public void setCharactersetFinders(List<CharactersetFinder> charactersetFinders)
|
|
{
|
|
this.charactersetFinders = charactersetFinders;
|
|
}
|
|
|
|
/**
|
|
* Gets the characterset from the stream, if the mimetype is text and the text
|
|
* has enough information to give the encoding away. Otherwise, the default
|
|
* is returned.
|
|
*
|
|
* @param is a stream that will not be affected by the call, but must
|
|
* support marking
|
|
* @param mimetype the mimetype of the stream data - <tt>null</tt> if not known
|
|
* @return returns a characterset and never <tt>null</tt>
|
|
*/
|
|
public Charset getCharset(InputStream is, String mimetype)
|
|
{
|
|
if (mimetype == null)
|
|
{
|
|
return defaultCharset;
|
|
}
|
|
// Is it text?
|
|
if (!mimetypeService.isText(mimetype))
|
|
{
|
|
return defaultCharset;
|
|
}
|
|
// Try the finders
|
|
Charset charset = null;
|
|
for (CharactersetFinder finder : charactersetFinders)
|
|
{
|
|
charset = finder.detectCharset(is);
|
|
if (charset != null)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
// Done
|
|
if (charset == null)
|
|
{
|
|
return defaultCharset;
|
|
}
|
|
else
|
|
{
|
|
return charset;
|
|
}
|
|
}
|
|
}
|