/*
 * Copyright (c) 2002, The Tendra Project <http://www.ten15.org/>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 *    		 Crown Copyright (c) 1997
 *
 *    This TenDRA(r) Computer Program is subject to Copyright
 *    owned by the United Kingdom Secretary of State for Defence
 *    acting through the Defence Evaluation and Research Agency
 *    (DERA).  It is made available to Recipients with a
 *    royalty-free licence for its use, reproduction, transfer
 *    to other parties and amendment for any purpose not excluding
 *    product development provided that any such use et cetera
 *    shall be deemed to be acceptance of the following conditions:-
 *
 *        (1) Its Recipients shall ensure that this Notice is
 *        reproduced upon any copies or amended versions of it;
 *
 *        (2) Any amended version of it shall be clearly marked to
 *        show both the nature of and the organisation responsible
 *        for the relevant amendment or amendments;
 *
 *        (3) Its onward transfer from a recipient to another
 *        party shall be deemed to be that party's acceptance of
 *        these conditions;
 *
 *        (4) DERA gives no warranty or assurance as to its
 *        quality or suitability for any purpose and DERA accepts
 *        no liability whatsoever in relation to any use to which
 *        it may be put.
 *
 * $TenDRA: tendra/src/tools/tld/bostream.c,v 1.11 2005/10/18 15:31:05 stefanf Exp $
 */


/**** bostream.c --- Binary output stream handling.
 *
 ** Author: Steve Folkes <smf@hermes.mod.uk>
 *
 **** Commentary:
 *
 * This file implements the binary output stream facility specified in the
 * file "bostream.h".  See that file for more details.
 *
 **** Change Log:*/

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

#include "bostream.h"
#include "cstring.h"

/*--------------------------------------------------------------------------*/

ExceptionP XX_bostream_write_error = EXCEPTION ("error writing to binary stream");

/*--------------------------------------------------------------------------*/

void
bostream_init(BOStreamP bostream)
{
	bostream->name = NULL;
}

BoolT
bostream_open(BOStreamP bostream, char *name)
{
#ifdef FS_BINARY_STDIO
	if ((bostream->file = fopen (name, "wb")) == NIL (FILE *)) {
		return (FALSE);
	}
#else
	if ((bostream->file = fopen (name, "w")) == NIL (FILE *)) {
		return (FALSE);
	}
#endif /* defined (FS_BINARY_STDIO) */
	bostream->name  = name;
	return (TRUE);
}

void
bostream_assign(BOStreamP to, BOStreamP from)
{
	to->file  = from->file;
	to->name  = from->name;
}

BoolT
bostream_is_open(BOStreamP bostream)
{
	return (bostream->name != NULL);
}

void
bostream_write_chars(BOStreamP bostream, unsigned length, char *chars)
{
	unsigned bytes_read = (unsigned) fwrite ((void *) chars, sizeof (char),
											 (size_t) length, bostream->file);

	if ((bytes_read != length) && (ferror (bostream->file))) {
		char *name = string_copy (bostream->name);

		THROW_VALUE (XX_bostream_write_error, name);
		UNREACHED;
	}
}

void
bostream_write_bytes(BOStreamP bostream, unsigned length, ByteP bytes)
{
	unsigned bytes_read = (unsigned) fwrite ((void *) bytes, sizeof (ByteT),
											 (size_t) length, bostream->file);

	if ((bytes_read != length) && (ferror (bostream->file))) {
		char *name = string_copy (bostream->name);

		THROW_VALUE (XX_bostream_write_error, name);
		UNREACHED;
	}
}

void
bostream_write_byte(BOStreamP bostream, ByteT byte)
{
	if ((fputc ((int) byte, bostream->file) == EOF) &&
		(ferror (bostream->file))) {
		char *name = string_copy (bostream->name);

		THROW_VALUE (XX_bostream_write_error, name);
		UNREACHED;
	}
}

char *
bostream_name(BOStreamP bostream)
{
	return (bostream->name);
}

void
bostream_close(BOStreamP bostream)
{
	if (fclose (bostream->file)) {
		char *name = string_copy (bostream->name);

		THROW_VALUE (XX_bostream_write_error, name);
		UNREACHED;
	}
	bostream_init (bostream);
}