/*
* $RCSfile: StreamMsgLogger.java,v $
* $Revision: 1.1 $
* $Date: 2005/02/11 05:02:26 $
* $State: Exp $
*
* Class: StreamMsgLogger
*
* Description: Implementation of MsgLogger for streams
*
*
*
* COPYRIGHT:
*
* This software module was originally developed by Rapha�l Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askel�f (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, F�lix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
*
* Copyright (c) 1999/2000 JJ2000 Partners.
*
*
*
*/
package jj2000.j2k.util;
import java.io.*;
/**
* This class implements the MsgLogger interface for streams. Streams can
* be simple files, terminals, stdout, stderr, etc. The messages or simple
* strings are formatted using the linewidth given to the constructor.
*
* <P>Messages are printed to the 'err' stream if they are of severity WARNING
* or ERROR, otherwise they are printed to the 'out' stream. Simple strings
* are always printed the 'out' stream.
* */
public class StreamMsgLogger implements MsgLogger {
/** The 'out' stream */
private PrintWriter out;
/** The 'err' stream */
private PrintWriter err;
/** The printer that formats the text */
private MsgPrinter mp;
/**
* Constructs a StreamMsgLogger that uses 'outstr' as the 'out' stream,
* and 'errstr' as the 'err' stream. Note that 'outstr' and 'errstr' can
* be System.out and System.err.
*
* @param outstr Where to print simple strings and LOG and INFO messages.
*
* @param errstr Where to print WARNING and ERROR messages
*
* @param lw The line width to use in formatting
*
*
* */
public StreamMsgLogger(OutputStream outstr, OutputStream errstr, int lw) {
out = new PrintWriter(outstr,true);
err = new PrintWriter(errstr,true);
mp = new MsgPrinter(lw);
}
/**
* Constructs a StreamMsgLogger that uses 'outstr' as the 'out' stream,
* and 'errstr' as the 'err' stream. Note that 'outstr' and 'errstr' can
* be System.out and System.err.
*
* @param outstr Where to print simple strings and LOG and INFO messages.
*
* @param errstr Where to print WARNING and ERROR messages
*
* @param lw The line width to use in formatting
*
*
* */
public StreamMsgLogger(Writer outstr, Writer errstr, int lw) {
out = new PrintWriter(outstr,true);
err = new PrintWriter(errstr,true);
mp = new MsgPrinter(lw);
}
/**
* Constructs a StreamMsgLogger that uses 'outstr' as the 'out' stream,
* and 'errstr' as the 'err' stream. Note that 'outstr' and 'errstr' can
* be System.out and System.err.
*
* @param outstr Where to print simple strings and LOG and INFO messages.
*
* @param errstr Where to print WARNING and ERROR messages
*
* @param lw The line width to use in formatting
*
*
* */
public StreamMsgLogger(PrintWriter outstr, PrintWriter errstr, int lw) {
out = outstr;
err = errstr;
mp = new MsgPrinter(lw);
}
/**
* Prints the message 'msg' to the output device, appending a newline,
* with severity 'sev'. The severity of the message is prepended to the
* message.
*
* @param sev The message severity (LOG, INFO, etc.)
*
* @param msg The message to display
*
*
* */
public void printmsg(int sev, String msg) {
PrintWriter lout;
int ind;
String prefix;
switch (sev) {
case LOG:
prefix = "[LOG]: ";
lout = out;
break;
case INFO:
prefix = "[INFO]: ";
lout = out;
break;
case WARNING:
prefix = "[WARNING]: ";
lout = err;
break;
case ERROR:
prefix = "[ERROR]: ";
lout = err;
break;
default:
throw new IllegalArgumentException("Severity "+sev+" not valid.");
}
mp.print(lout,0,prefix.length(),prefix+msg);
lout.flush();
}
/**
* Prints the string 'str' to the 'out' stream, appending a newline. The
* message is reformatted to the line width given to the constructors and
* using 'flind' characters to indent the first line and 'ind' characters
* to indent the second line. However, any newlines appearing in 'str' are
* respected. The output device may or may not display the string until
* flush() is called, depending on the autoflush state of the PrintWriter,
* to be sure flush() should be called to write the string to the
* device. This method just prints the string, the string does not make
* part of a "message" in the sense that noe severity is associated to it.
*
* @param str The string to print
*
* @param flind Indentation of the first line
*
* @param ind Indentation of any other lines.
*
*
* */
public void println(String str, int flind, int ind) {
mp.print(out,flind,ind,str);
}
/**
* Writes any buffered data from the print() and println() methods to the
* device.
*
*
* */
public void flush() {
out.flush();
}
}