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/*
* c_help - custom help function
*
* Copyright (C) 1999-2004 Landon Curt Noll
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* Calc is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
* Public License for more details.
*
* A copy of version 2.1 of the GNU Lesser General Public License is
* distributed with calc under the filename COPYING-LGPL. You should have
* received a copy with calc; if not, write to Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* @(#) $Revision: 29.4 $
* @(#) $Id: c_help.c,v 29.4 2004/02/23 14:04:01 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/custom/RCS/c_help.c,v $
*
* Under source code control: 1997/03/09 05:25:41
* File existed as early as: 1997
*
* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
#if defined(CUSTOM)
#include "../have_const.h"
#include "../value.h"
#include "../custom.h"
#include "../have_unused.h"
/*
* c_help - custom help function
*
* This function assumes that a help file with the same name as
* the custom function has been installed by the custom/Makefile
* (as listed in the CUSTOM_HELP makefile variable) under the
* CUSTOMHELPDIR == HELPDIR/custhelp directory.
*
* The help command first does a search in HELPDIR and later
* in CUSTOMHELPDIR. If a custom help file has the same name
* as a file under HELPDIR then help will display the HELPDIR
* file and NOT the custom file. This function will ignore
* and HELPDIR file and work directly with the custom help file.
*
* given:
* vals[0] name of the custom help file to directly access
*/
/*ARGSUSED*/
VALUE
c_help(char UNUSED *name, int UNUSED count, VALUE **vals)
{
VALUE result; /* what we will return */
/*
* parse args
*/
if (vals[0]->v_type != V_STR) {
math_error("custom help arg 1 must be a string");
/*NOTREACHED*/
}
/*
* give the help
*/
customhelp((char *)vals[0]->v_str);
/*
* return NULL
*/
result.v_type = V_NULL;
return result;
}
#endif /* CUSTOM */
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