/*
* Copyright (c) 1998-199 Caucho Technology -- all rights reserved
*
* @author Scott Ferguson
*
* $Id: InputStreamEcmaWrap.java,v 1.1.1.1 2004/09/11 05:14:19 cvs Exp $
*/
package com.caucho.eswrap.java.io;
import com.caucho.util.CharBuffer;
import java.io.IOException;
import java.io.InputStream;
public class InputStreamEcmaWrap {
public static int readByte(InputStream is)
throws IOException
{
return is.read();
}
public static String read(InputStream is)
throws IOException
{
int ch = is.read();
if (ch == -1)
return null;
return String.valueOf((char) ch);
}
public static String read(InputStream is, int length)
throws IOException
{
CharBuffer bb = new CharBuffer();
for (; length > 0; length--) {
int ch = is.read();
if (ch == -1)
break;
bb.append((char) ch);
}
if (bb.length() == 0)
return null;
return bb.toString();
}
public static String readln(InputStream is)
throws IOException
{
CharBuffer bb = new CharBuffer();
boolean hasCr = false;
boolean hasData = false;
while (true) {
int ch = is.read();
if (ch == -1)
break;
else if (ch == '\n') {
hasData = true;
break;
}
else if (hasCr) {
hasData = true;
break;
}
if (ch == '\r')
hasCr = true;
else
bb.append((char) ch);
}
if (bb.length() == 0 && ! hasData)
return null;
return bb.toString();
}
}