126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/* $NetBSD: help.c,v 1.5 2001/02/05 00:57:33 christos Exp $ */
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/* help.c Larn is copyrighted 1986 by Noah Morgan. */
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: help.c,v 1.5 2001/02/05 00:57:33 christos Exp $");
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#endif /* not lint */
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#include <unistd.h>
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#include "header.h"
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#include "extern.h"
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/*
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* help function to display the help info
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*
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* format of the .larn.help file
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*
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* 1st character of file: # of pages of help available (ascii digit)
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* page (23 lines) for the introductory message (not counted in above)
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* pages of help text (23 lines per page)
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*/
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void
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help()
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{
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int i, j;
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#ifndef VT100
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char tmbuf[128]; /* intermediate translation buffer
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* when not a VT100 */
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#endif /* VT100 */
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if ((j = openhelp()) < 0)
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return; /* open the help file and get # pages */
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for (i = 0; i < 23; i++)
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lgetl(); /* skip over intro message */
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for (; j > 0; j--) {
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clear();
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for (i = 0; i < 23; i++)
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#ifdef VT100
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lprcat(lgetl()); /* print out each line that
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* we read in */
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#else /* VT100 */
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{
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tmcapcnv(tmbuf, lgetl());
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lprcat(tmbuf);
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} /* intercept \33's */
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#endif /* VT100 */
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if (j > 1) {
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lprcat(" ---- Press ");
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standout("return");
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lprcat(" to exit, ");
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standout("space");
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lprcat(" for more help ---- ");
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i = 0;
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while ((i != ' ') && (i != '\n') && (i != '\33'))
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i = lgetchar();
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if ((i == '\n') || (i == '\33')) {
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lrclose();
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setscroll();
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drawscreen();
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return;
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}
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}
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}
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lrclose();
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retcont();
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drawscreen();
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}
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/*
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* function to display the welcome message and background
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*/
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void
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welcome()
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{
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int i;
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#ifndef VT100
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char tmbuf[128]; /* intermediate translation buffer
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* when not a VT100 */
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#endif /* VT100 */
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if (openhelp() < 0)
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return; /* open the help file */
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clear();
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for (i = 0; i < 23; i++)
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#ifdef VT100
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lprcat(lgetl());/* print out each line that we read in */
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#else /* VT100 */
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{
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tmcapcnv(tmbuf, lgetl());
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lprcat(tmbuf);
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} /* intercept \33's */
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#endif /* VT100 */
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lrclose();
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retcont(); /* press return to continue */
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}
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/*
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* function to say press return to continue and reset scroll when done
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*/
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void
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retcont()
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{
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cursor(1, 24);
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lprcat("Press ");
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standout("return");
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lprcat(" to continue: ");
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while (lgetchar() != '\n');
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setscroll();
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}
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/*
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* routine to open the help file and return the first character - '0'
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*/
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int
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openhelp()
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{
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if (lopen(helpfile) < 0) {
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lprintf("Can't open help file \"%s\" ", helpfile);
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lflush();
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sleep(4);
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drawscreen();
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setscroll();
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return (-1);
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}
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resetscroll();
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return (lgetc() - '0');
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}
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