/*
 * Copyright (c) 1988 Mark Nudleman
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  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, 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 */

#include "less.h"
#include <sys/param.h>
#include "pathnames.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <locale.h>
#define  MAXLANGLEN  64

void
help()
{
	char cmd[MAXPATHLEN + 20];
	char *p, lang[ MAXLANGLEN ], helpfile[ MAXPATHLEN ];
	int fd;

	/* This doesn't effect to performance so much. */
           
	if ( (p = setlocale( LC_MESSAGES, NULL )) == NULL )
	      strcpy( lang, "C" );
        else {
              strncpy( lang, p, MAXLANGLEN );
              lang[MAXLANGLEN-1] = '\0'; 
	}
	(void)sprintf(helpfile, "%s/%s/%s","/usr/lib/locale",lang,"LC_MESSAGES/more.help");

	if ( (fd = open( helpfile, O_RDONLY )) != -1 ) {
	     (void)sprintf(cmd, "-more %s", helpfile);
	      close( fd );
	}
	else 
	(void)sprintf(cmd, "-more %s", _PATH_HELPFILE);

	lsystem(cmd);
}