/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.document.impl;
import org.exoplatform.container.xml.InitParams;
import org.exoplatform.container.xml.ValuesParam;
import org.exoplatform.services.document.DocumentReadException;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
/**
* Created by The eXo Platform SAS A reader of text files.
*
* @author <a href="mailto:zagrebin_v@mail.ru">Victor Zagrebin</a>
* @version March 04, 2006
*/
public class TextPlainDocumentReader extends BaseDocumentReader
{
public static final String DEFAULT_ENCODING = "defaultEncoding";
private String defaultEncoding;
/**
* Initializes a newly created object for text/plain files format parsing.
*
* @param params the container parameters.
*/
public TextPlainDocumentReader(InitParams params)
{
ValuesParam encoding = (ValuesParam)params.getParameter(DEFAULT_ENCODING);
if (encoding != null && encoding.getValue() != null && !encoding.getValue().equalsIgnoreCase(""))
{
defaultEncoding = encoding.getValue();
}
else
{
defaultEncoding = null;
}
}
/**
* Get the "text/plain","script/groovy","application/x-groovy","application/x-javascript","application/javascript","text/javascript" mime types.
*
* @return The "text/plain","script/groovy","application/x-groovy","application/x-javascript","application/javascript","text/javascript" mime type.
*/
public String[] getMimeTypes()
{
return new String[]{"text/plain","script/groovy",
"application/x-groovy","application/x-javascript",
"application/javascript","text/javascript",
"application/x-jaxrs+groovy"};
}
/**
* Returns a text from file content.
*
* @param is an input stream with a file content.
* @return The string with text from file content.
*/
public String getContentAsText(InputStream is) throws IOException, DocumentReadException
{
if (this.defaultEncoding != null)
{
return getContentAsText(is, defaultEncoding);
}
else
{
return getContentAsText(is, null); // system encoding will be used
}
}
/**
* Returns a text from file content. If encoding parameter is null - system
* encoding will be used.
*
* @param is an input stream with a file content.
* @param encoding file content encoding.
* @return The string with text from file content.
*/
public String getContentAsText(InputStream is, String encoding) throws IOException, DocumentReadException
{
if (is == null)
{
throw new NullPointerException("InputStream is null.");
}
try
{
byte[] buffer = new byte[2048];
int len;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
while ((len = is.read(buffer)) > 0)
bos.write(buffer, 0, len);
bos.close();
if (bos.size() == 0)
return "";
else if (encoding != null)
return new String(bos.toByteArray(), encoding);
else
return new String(bos.toByteArray());
}
finally
{
if (is != null)
try
{
is.close();
}
catch (IOException e)
{
}
}
}
/*
* (non-Javadoc)
*
* @see org.exoplatform.services.document.DocumentReader#getProperties(java.io.
* InputStream)
*/
public Properties getProperties(InputStream is) throws IOException, DocumentReadException
{
try
{
is.close();
}
catch (IOException e)
{
}
return new Properties();
}
}