88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
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/* help.c Larn is copyrighted 1986 by Noah Morgan. */
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#include "header.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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extern char helpfile[];
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help()
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{
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register int i,j;
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#ifndef VT100
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char tmbuf[128]; /* intermediate translation buffer when not a VT100 */
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#endif VT100
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if ((j=openhelp()) < 0) return; /* open the help file and get # pages */
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for (i=0; i<23; i++) lgetl(); /* skip over intro message */
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for (; j>0; j--)
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{
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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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{ tmcapcnv(tmbuf,lgetl()); lprcat(tmbuf); } /* intercept \33's */
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#endif VT100
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if (j>1)
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{
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lprcat(" ---- Press "); standout("return");
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lprcat(" to exit, "); standout("space");
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lprcat(" for more help ---- ");
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i=0; while ((i!=' ') && (i!='\n') && (i!='\33')) i=getchar();
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if ((i=='\n') || (i=='\33'))
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{
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lrclose(); setscroll(); drawscreen(); return;
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}
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}
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}
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lrclose(); retcont(); 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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welcome()
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{
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register int i;
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#ifndef VT100
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char tmbuf[128]; /* intermediate translation buffer when not a VT100 */
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#endif VT100
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if (openhelp() < 0) 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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{ tmcapcnv(tmbuf,lgetl()); lprcat(tmbuf); } /* intercept \33's */
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#endif VT100
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lrclose(); 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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retcont()
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{
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cursor(1,24); lprcat("Press "); standout("return");
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lprcat(" to continue: "); while (getchar() != '\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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openhelp()
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{
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if (lopen(helpfile)<0)
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{
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lprintf("Can't open help file \"%s\" ",helpfile);
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lflush(); sleep(4); drawscreen(); setscroll(); return(-1);
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}
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resetscroll(); return(lgetc() - '0');
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}
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