/*
* CVS identifier:
*
* $Id: StreamMsgLogger.java,v 1.11 2000/09/05 09:25:30 grosbois Exp $
*
* Class:                   StreamMsgLogger
*
* Description:             Implementation of MsgLogger for streams
*
*
*
* COPYRIGHT:
* 
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix 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.
* 
* 
* 
*/
using System;
namespace CSJ2K.j2k.util
{
	
	/// <summary> 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.
	/// 
	/// </summary>
	public class StreamMsgLogger : MsgLogger
	{
		
		/// <summary>The 'out' stream </summary>
		private System.IO.StreamWriter out_Renamed;
		
		/// <summary>The 'err' stream </summary>
		private System.IO.StreamWriter err;
		
		/// <summary>The printer that formats the text </summary>
		private MsgPrinter mp;
		
		/// <summary> 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.
		/// 
		/// </summary>
		/// <param name="outstr">Where to print simple strings and LOG and INFO messages.
		/// 
		/// </param>
		/// <param name="errstr">Where to print WARNING and ERROR messages
		/// 
		/// </param>
		/// <param name="lw">The line width to use in formatting
		/// 
		/// 
		/// 
		/// </param>
		public StreamMsgLogger(System.IO.Stream outstr, System.IO.Stream errstr, int lw)
		{
			System.IO.StreamWriter temp_writer;
			temp_writer = new System.IO.StreamWriter(outstr, System.Text.Encoding.Default);
			temp_writer.AutoFlush = true;
			out_Renamed = temp_writer;
			System.IO.StreamWriter temp_writer2;
			temp_writer2 = new System.IO.StreamWriter(errstr, System.Text.Encoding.Default);
			temp_writer2.AutoFlush = true;
			err = temp_writer2;
			mp = new MsgPrinter(lw);
		}
		
		/// <summary> 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.
		/// 
		/// </summary>
		/// <param name="outstr">Where to print simple strings and LOG and INFO messages.
		/// 
		/// </param>
		/// <param name="errstr">Where to print WARNING and ERROR messages
		/// 
		/// </param>
		/// <param name="lw">The line width to use in formatting
		/// 
		/// 
		/// 
		/// </param>
		//UPGRADE_ISSUE: Class hierarchy differences between 'java.io.Writer' and 'System.IO.StreamWriter' may cause compilation errors. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1186'"
		public StreamMsgLogger(System.IO.StreamWriter outstr, System.IO.StreamWriter errstr, int lw)
		{
			System.IO.StreamWriter temp_writer;
			temp_writer = new System.IO.StreamWriter(outstr.BaseStream, outstr.Encoding);
			temp_writer.AutoFlush = true;
			out_Renamed = temp_writer;
			System.IO.StreamWriter temp_writer2;
			temp_writer2 = new System.IO.StreamWriter(errstr.BaseStream, errstr.Encoding);
			temp_writer2.AutoFlush = true;
			err = temp_writer2;
			mp = new MsgPrinter(lw);
		}
		
		/// <summary> 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.
		/// 
		/// </summary>
		/// <param name="outstr">Where to print simple strings and LOG and INFO messages.
		/// 
		/// </param>
		/// <param name="errstr">Where to print WARNING and ERROR messages
		/// 
		/// </param>
		/// <param name="lw">The line width to use in formatting
		/// 
		/// 
		/// 
		/// </param>
        /// 
        /*
		public StreamMsgLogger(System.IO.StreamWriter outstr, System.IO.StreamWriter errstr, int lw)
		{
			out_Renamed = outstr;
			err = errstr;
			mp = new MsgPrinter(lw);
		}
		*/
		/// <summary> Prints the message 'msg' to the output device, appending a newline,
		/// with severity 'sev'. The severity of the message is prepended to the
		/// message.
		/// 
		/// </summary>
		/// <param name="sev">The message severity (LOG, INFO, etc.)
		/// 
		/// </param>
		/// <param name="msg">The message to display
		/// 
		/// 
		/// 
		/// </param>
		public virtual void  printmsg(int sev, System.String msg)
		{
			System.IO.StreamWriter lout;
			//int ind;
			System.String prefix;
			
			switch (sev)
			{
				
				case CSJ2K.j2k.util.MsgLogger_Fields.LOG: 
					prefix = "[LOG]: ";
					lout = out_Renamed;
					break;
				
				case CSJ2K.j2k.util.MsgLogger_Fields.INFO: 
					prefix = "[INFO]: ";
					lout = out_Renamed;
					break;
				
				case CSJ2K.j2k.util.MsgLogger_Fields.WARNING: 
					prefix = "[WARNING]: ";
					lout = err;
					break;
				
				case CSJ2K.j2k.util.MsgLogger_Fields.ERROR: 
					prefix = "[ERROR]: ";
					lout = err;
					break;
				
				default: 
					throw new System.ArgumentException("Severity " + sev + " not valid.");
				
			}
			
			mp.print(lout, 0, prefix.Length, prefix + msg);
			lout.Flush();
		}
		
		/// <summary> 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.
		/// 
		/// </summary>
		/// <param name="str">The string to print
		/// 
		/// </param>
		/// <param name="flind">Indentation of the first line
		/// 
		/// </param>
		/// <param name="ind">Indentation of any other lines.
		/// 
		/// 
		/// 
		/// </param>
		public virtual void  println(System.String str, int flind, int ind)
		{
			mp.print(out_Renamed, flind, ind, str);
		}
		
		/// <summary> Writes any buffered data from the print() and println() methods to the
		/// device.
		/// 
		/// 
		/// 
		/// </summary>
		public virtual void  flush()
		{
			out_Renamed.Flush();
		}
	}
}