sflcvsb.c
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sflcvsb.c
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	/* ----------------------------------------------------------------<Prolog>-
	Name: sflcvsb.c
	Title: Converts a Boolean to a string
	Package: Standard Function Library (SFL)

	Written: 1996/01/05 iMatix SFL project team <sfl@imatix.com>
	Revised: 1999/09/29

	Copyright: Copyright (c) 1996-2000 iMatix Corporation
	License: This is free software; you can redistribute it and/or modify
	it under the terms of the SFL License Agreement as provided
	in the file LICENSE.TXT. This software is distributed in
	the hope that it will be useful, but without any warranty.
	------------------------------------------------------------------</Prolog>-*/

	#include "prelude.h" /* Universal header file */
	#include "sflconv.h" /* Prototypes for functions */


	/* ---------------------------------------------------------------------[<]-
	Function: conv_str_bool

	Synopsis: Converts a string to a Bool. Accepts T/Y/1 as TRUE, F/N/0
	as FALSE, ignoring case. Looks only at the first letter of the string.
	Returns 1 for TRUE, 0 for FALSE, -1 if the string was not valid.
	---------------------------------------------------------------------[>]-*/

	int
	conv_str_bool (
	const char *string)
	{
	char
	ch;

	ch = tolower (string [0]);
	conv_reason = 0; /* No conversion errors so far */
	if (ch == 'y' \|\| ch == 't' \|\| ch == '1')
	return (1);
	else
	if (ch == 'n' \|\| ch == 'f' \|\| ch == '0')
	return (0);
	else
	{
	conv_reason = CONV_ERR_NOT_BOOLEAN;
	return (-1);
	}
	}