/*
 * Copyright (c) 2001-2002 Michael David Adams.
 * Copyright (c) 2005-2006 Artifex Software, Inc.
 * All rights reserved.
 */

/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer License Version 2.0
 * 
 * Copyright (c) 1999-2000 Image Power, Inc.
 * Copyright (c) 1999-2000 The University of British Columbia
 * Copyright (c) 2001-2003 Michael David Adams
 * 
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person (the
 * "User") obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 * 
 * 1.  The above copyright notices and this permission notice (which
 * includes the disclaimer below) shall be included in all copies or
 * substantial portions of the Software.
 * 
 * 2.  The name of a copyright holder shall not be used to endorse or
 * promote products derived from the Software without specific prior
 * written permission.
 * 
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
 * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
 * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
 * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
 * 
 * __END_OF_JASPER_LICENSE__
 */

/******************************************************************************\
* Includes.
\******************************************************************************/

#include <stdarg.h>
#include <stdio.h>

#if defined(_MSC_VER) || defined(JAS_WIN_MSVC_BUILD)
/* MS Windows requires mangling some unix functions */
#define vsnprintf _vsnprintf
#endif

#include "jasper/jas_types.h"
#include "jasper/jas_debug.h"

/******************************************************************************\
* Static data. These must be globals since we have no library context.
\******************************************************************************/

/* The debug level. */
static int jas_dbglevel = 0;

/* The callback for out-of-band error reporting */
static void(*jas_errorp_cb) (jas_error_t, char *) = NULL;

/******************************************************************************\
* Code for getting/setting the debug level and callback.
\******************************************************************************/

/* Set the library debug level. */
int jas_setdbglevel(int dbglevel)
{
	int olddbglevel;

	/* Save the old debug level. */
	olddbglevel = jas_dbglevel;

	/* Change the debug level. */
	jas_dbglevel = dbglevel;

	/* Return the old debug level. */
	return olddbglevel;
}

/* Get the library debug level. */
int jas_getdbglevel()
{
	return jas_dbglevel;
}

/* Set the library error callback. */
void jas_set_error_cb( void(*cb) ( jas_error_t, char *) )
{
	jas_errorp_cb = cb;
}

/******************************************************************************\
* Code.
\******************************************************************************/

/* call an error callback if one is set */
void jas_error(jas_error_t err, char *err_str)
{
	if( jas_errorp_cb )
		jas_errorp_cb( err, err_str );
}

/* Perform formatted output to our error stream. */
int jas_eprintf(const char *fmt, ...)
{
	va_list ap;
	char	tmp[256];

	va_start(ap, fmt);
	vsnprintf( tmp, 255, fmt, ap);
	jas_error(	JAS_ERR_STD_ERR_WARNING,
				tmp
			);
	va_end(ap);

	return 0;
}

/* Dump memory to a stream. */
int jas_memdump(FILE *out, void *data, size_t len)
{
	size_t i;
	size_t j;
	uchar *dp;
	dp = data;
	for (i = 0; i < len; i += 16) {
		fprintf(out, "%04x:", i);
		for (j = 0; j < 16; ++j) {
			if (i + j < len) {
				fprintf(out, " %02x", dp[i + j]);
			}
		}
		fprintf(out, "\n");
	}
	return 0;
}
