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File: [cvs.NetBSD.org] / src / games / larn / help.c (download)

Revision 1.5, Mon Feb 5 00:57:33 2001 UTC (18 years, 7 months ago) by christos
Branch: MAIN
CVS Tags: wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, netbsd-3-base, netbsd-3-1-RELEASE, netbsd-3-1-RC4, netbsd-3-1-RC3, netbsd-3-1-RC2, netbsd-3-1-RC1, netbsd-3-1-1-RELEASE, netbsd-3-1, netbsd-3-0-RELEASE, netbsd-3-0-RC6, netbsd-3-0-RC5, netbsd-3-0-RC4, netbsd-3-0-RC3, netbsd-3-0-RC2, netbsd-3-0-RC1, netbsd-3-0-3-RELEASE, netbsd-3-0-2-RELEASE, netbsd-3-0-1-RELEASE, netbsd-3-0, netbsd-3, netbsd-2-base, netbsd-2-1-RELEASE, netbsd-2-1-RC6, netbsd-2-1-RC5, netbsd-2-1-RC4, netbsd-2-1-RC3, netbsd-2-1-RC2, netbsd-2-1-RC1, netbsd-2-1, netbsd-2-0-base, netbsd-2-0-RELEASE, netbsd-2-0-RC5, netbsd-2-0-RC4, netbsd-2-0-RC3, netbsd-2-0-RC2, netbsd-2-0-RC1, netbsd-2-0-3-RELEASE, netbsd-2-0-2-RELEASE, netbsd-2-0-1-RELEASE, netbsd-2-0, netbsd-2, netbsd-1-6-base, netbsd-1-6-RELEASE, netbsd-1-6-RC3, netbsd-1-6-RC2, netbsd-1-6-RC1, netbsd-1-6-PATCH002-RELEASE, netbsd-1-6-PATCH002-RC4, netbsd-1-6-PATCH002-RC3, netbsd-1-6-PATCH002-RC2, netbsd-1-6-PATCH002-RC1, netbsd-1-6-PATCH002, netbsd-1-6-PATCH001-RELEASE, netbsd-1-6-PATCH001-RC3, netbsd-1-6-PATCH001-RC2, netbsd-1-6-PATCH001-RC1, netbsd-1-6-PATCH001, netbsd-1-6, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-base, hpcarm-cleanup, fvdl_fs64_base, cube-autoconf-base, cube-autoconf, based-on-larn-12_0, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: matt-armv6
Changes since 1.4: +4 -4 lines

- rename getchar to lgetchar to avoid conflicts with the stdio getchar
- fix redundant decls and nested externs
- use snprintf instead of sprintf

/*	$NetBSD: help.c,v 1.5 2001/02/05 00:57:33 christos Exp $	*/

/* help.c		Larn is copyrighted 1986 by Noah Morgan. */
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: help.c,v 1.5 2001/02/05 00:57:33 christos Exp $");
#endif /* not lint */

#include <unistd.h>

#include "header.h"
#include "extern.h"
/*
 *	help function to display the help info
 *
 *	format of the .larn.help file
 *
 *	1st character of file:	# of pages of help available (ascii digit)
 *	page (23 lines) for the introductory message (not counted in above)
 *	pages of help text (23 lines per page)
 */
void
help()
{
	int    i, j;
#ifndef VT100
	char            tmbuf[128];	/* intermediate translation buffer
					 * when not a VT100 */
#endif	/* VT100 */
	if ((j = openhelp()) < 0)
		return;		/* open the help file and get # pages */
	for (i = 0; i < 23; i++)
		lgetl();	/* skip over intro message */
	for (; j > 0; j--) {
		clear();
		for (i = 0; i < 23; i++)
#ifdef VT100
			lprcat(lgetl());	/* print out each line that
						 * we read in */
#else	/* VT100 */
		{
			tmcapcnv(tmbuf, lgetl());
			lprcat(tmbuf);
		}		/* intercept \33's */
#endif	/* VT100 */
		if (j > 1) {
			lprcat("    ---- Press ");
			standout("return");
			lprcat(" to exit, ");
			standout("space");
			lprcat(" for more help ---- ");
			i = 0;
			while ((i != ' ') && (i != '\n') && (i != '\33'))
				i = lgetchar();
			if ((i == '\n') || (i == '\33')) {
				lrclose();
				setscroll();
				drawscreen();
				return;
			}
		}
	}
	lrclose();
	retcont();
	drawscreen();
}

/*
 *	function to display the welcome message and background
 */
void
welcome()
{
	int    i;
#ifndef VT100
	char            tmbuf[128];	/* intermediate translation buffer
					 * when not a VT100 */
#endif	/* VT100 */
	if (openhelp() < 0)
		return;		/* open the help file */
	clear();
	for (i = 0; i < 23; i++)
#ifdef VT100
		lprcat(lgetl());/* print out each line that we read in */
#else	/* VT100 */
	{
		tmcapcnv(tmbuf, lgetl());
		lprcat(tmbuf);
	}			/* intercept \33's */
#endif	/* VT100 */
	lrclose();
	retcont();		/* press return to continue */
}

/*
 *	function to say press return to continue and reset scroll when done
 */
void
retcont()
{
	cursor(1, 24);
	lprcat("Press ");
	standout("return");
	lprcat(" to continue: ");
	while (lgetchar() != '\n');
	setscroll();
}

/*
 *	routine to open the help file and return the first character - '0'
 */
int
openhelp()
{
	if (lopen(helpfile) < 0) {
		lprintf("Can't open help file \"%s\" ", helpfile);
		lflush();
		sleep(4);
		drawscreen();
		setscroll();
		return (-1);
	}
	resetscroll();
	return (lgetc() - '0');
}