/*

 * This software is copyrighted as noted below.  It may be freely copied,

 * modified, and redistributed, provided that the copyright notice is 

 * preserved on all copies.

 * 

 * There is no warranty or other guarantee of fitness for this software,

 * it is provided solely "as is".  Bug reports or fixes may be sent

 * to the author, who may or may not act on them as he desires.

 *

 * You may not include this software in a program or other software product

 * without supplying the source, or without informing the end-user that the 

 * source is available for no extra charge.

 *

 * If you modify this software, you should include a notice giving the

 * name of the person performing the modification, the date of modification,

 * and the reason for such modification.

 */

/* 

 * rle_error.c - Error message stuff for URT.

 * 

 * Author:	Spencer W. Thomas

 * 		EECS Dept.

 * 		University of Michigan

 * Date:	Mon Mar  2 1992

 * Copyright (c) 1992, University of Michigan

 */

#include <string.h>

#include "rle_config.h"

#include "rle.h"

/*****************************************************************

 * TAG( rle_alloc_error )

 * 

 * Print memory allocation error message and exit.

 * Inputs:

 * 	pgm:		Name of this program.

 * 	name:		Name of memory trying to be allocated.

 * Outputs:

 * 	Prints message and exits.

 *

 * Returns int because it's used in a conditional expression.

 */

int

rle_alloc_error( pgm, name )

CONST_DECL char *pgm, *name;

{

    if ( name )

	fprintf( stderr, "%s: memory allocation failed.\n", pgm );

    else

	fprintf( stderr, "%s: memory allocation failed (no space for %s).\n",

		 pgm, name );

    exit( RLE_NO_SPACE );

    /* Will some compilers bitch about this because they know exit

     * doesn't return??

     */

    return 0;

}

/*****************************************************************

 * TAG( rle_get_error )

 * 

 * Print an error message for the return code from rle_get_setup

 * Inputs:

 * 	code:		The return code from rle_get_setup.

 *	pgmname:	Name of this program (argv[0]).

 *	fname:		Name of the input file.

 * Outputs:

 * 	Prints an error message on standard output.

 *	Returns code.

 */

int

rle_get_error( code, pgmname, fname )

int code;

CONST_DECL char *pgmname;

CONST_DECL char *fname;

{

    if (! fname || strcmp( fname, "-" ) == 0 )

	fname = "Standard Input";

    switch( code )

    {

    case RLE_SUCCESS:		/* success */

	break;

    case RLE_NOT_RLE:		/* Not an RLE file */

	fprintf( stderr, "%s: %s is not an RLE file\n",

		 pgmname, fname );

	break;

    case RLE_NO_SPACE:			/* malloc failed */

	fprintf( stderr,

		 "%s: Malloc failed reading header of file %s\n",

		 pgmname, fname );

	break;

    case RLE_EMPTY:

	fprintf( stderr, "%s: %s is an empty file\n",

		 pgmname, fname );

	break;

    case RLE_EOF:

	fprintf( stderr,

		 "%s: RLE header of %s is incomplete (premature EOF)\n",

		 pgmname, fname );

	break;

    default:

	fprintf( stderr, "%s: Error encountered reading header of %s\n",

		 pgmname, fname );

	break;

    }

    return code;

}