/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package javax.servlet;
import java.io.IOException;
import java.io.InputStream;
/**
* Servlets generally read POSTed data with ServletInputStream.
* ServletInputStream adds a readLine method to the standard InputStream
* API.
*/
public abstract class ServletInputStream extends InputStream {
protected ServletInputStream()
{
}
/**
* Reads a line from the POST data.
*
* @param buffer buffer to hold the line data
* @param offset offset into the buffer to start
* @param length maximum number of bytes to read.
*
* @return number of bytes read or -1 on the end of line.
*/
public int readLine(byte []buffer, int offset, int length)
throws IOException
{
int i = 0;
for (i = 0; i < length; i++) {
int ch = read();
if (ch < 0)
return i == 0 ? -1 : i;
buffer[offset + i] = (byte) ch;
if (ch == '\n')
return i + 1;
}
return i;
}
}