610 lines
15 KiB
C
610 lines
15 KiB
C
/* $NetBSD: io.c,v 1.22 2009/08/25 06:56:52 dholland Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* The game adventure was originally written in Fortran by Will Crowther
|
|
* and Don Woods. It was later translated to C and enhanced by Jim
|
|
* Gillogly. This code is derived from software contributed to Berkeley
|
|
* by Jim Gillogly at The Rand Corporation.
|
|
*
|
|
* 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. 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 <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 5/31/93";
|
|
#else
|
|
__RCSID("$NetBSD: io.c,v 1.22 2009/08/25 06:56:52 dholland Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
/* Re-coding of advent in C: file i/o and user i/o */
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include "hdr.h"
|
|
#include "extern.h"
|
|
|
|
static int next(void);
|
|
static void rdesc(int);
|
|
static void rdefault(void);
|
|
static void rhints(void);
|
|
static void rliq(void);
|
|
static void rlocs(void);
|
|
static int rnum(void);
|
|
static void rtrav(void);
|
|
static void rvoc(void);
|
|
|
|
/* get command from user */
|
|
/* no prompt, usually */
|
|
void
|
|
getin(char **wrd1, char **wrd2)
|
|
{
|
|
char *s;
|
|
static char wd1buf[MAXSTR], wd2buf[MAXSTR];
|
|
int first, numch, c;
|
|
|
|
*wrd1 = wd1buf; /* return ptr to internal str */
|
|
*wrd2 = wd2buf;
|
|
wd2buf[0] = 0; /* in case it isn't set here */
|
|
for (s = wd1buf, first = 1, numch = 0;;) {
|
|
c = getchar();
|
|
if ((*s = (char)c) >= 'A' && *s <= 'Z')
|
|
*s = *s - ('A' - 'a');
|
|
/* convert to upper case */
|
|
switch (c) { /* start reading from user */
|
|
case '\n':
|
|
*s = 0;
|
|
return;
|
|
case ' ':
|
|
if (s == wd1buf || s == wd2buf) /* initial blank */
|
|
continue;
|
|
*s = 0;
|
|
if (first) { /* finished 1st wd; start 2nd */
|
|
first = numch = 0;
|
|
s = wd2buf;
|
|
break;
|
|
} else { /* finished 2nd word */
|
|
FLUSHLINE;
|
|
*s = 0;
|
|
return;
|
|
}
|
|
case EOF:
|
|
printf("user closed input stream, quitting...\n");
|
|
exit(0);
|
|
default:
|
|
if (++numch >= MAXSTR) { /* string too long */
|
|
printf("Give me a break!!\n");
|
|
wd1buf[0] = wd2buf[0] = 0;
|
|
FLUSHLINE;
|
|
return;
|
|
}
|
|
s++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* confirm with rspeak */
|
|
int
|
|
yes(int x, int y, int z)
|
|
{
|
|
int result = TRUE; /* pacify gcc */
|
|
int ch;
|
|
for (;;) {
|
|
rspeak(x); /* tell him what we want */
|
|
if ((ch = getchar()) == 'y')
|
|
result = TRUE;
|
|
else if (ch == 'n')
|
|
result = FALSE;
|
|
else if (ch == EOF) {
|
|
printf("user closed input stream, quitting...\n");
|
|
exit(0);
|
|
}
|
|
FLUSHLINE;
|
|
if (ch == 'y' || ch == 'n')
|
|
break;
|
|
printf("Please answer the question.\n");
|
|
}
|
|
if (result == TRUE)
|
|
rspeak(y);
|
|
if (result == FALSE)
|
|
rspeak(z);
|
|
return (result);
|
|
}
|
|
|
|
/* confirm with mspeak */
|
|
int
|
|
yesm(int x, int y, int z)
|
|
{
|
|
int result = TRUE; /* pacify gcc */
|
|
int ch;
|
|
for (;;) {
|
|
mspeak(x); /* tell him what we want */
|
|
if ((ch = getchar()) == 'y')
|
|
result = TRUE;
|
|
else if (ch == 'n')
|
|
result = FALSE;
|
|
else if (ch == EOF) {
|
|
printf("user closed input stream, quitting...\n");
|
|
exit(0);
|
|
}
|
|
FLUSHLINE;
|
|
if (ch == 'y' || ch == 'n')
|
|
break;
|
|
printf("Please answer the question.\n");
|
|
}
|
|
if (result == TRUE)
|
|
mspeak(y);
|
|
if (result == FALSE)
|
|
mspeak(z);
|
|
return (result);
|
|
}
|
|
/* FILE *inbuf,*outbuf; */
|
|
|
|
static char *inptr; /* Pointer into virtual disk */
|
|
|
|
static int outsw = 0; /* putting stuff to data file? */
|
|
|
|
static const char iotape[] = "Ax3F'\003tt$8h\315qer*h\017nGKrX\207:!l";
|
|
static const char *tape = iotape; /* pointer to encryption tape */
|
|
|
|
/* next virtual char, bump adr */
|
|
static int
|
|
next(void)
|
|
{
|
|
int ch;
|
|
|
|
ch = (*inptr ^ random()) & 0xFF; /* Decrypt input data */
|
|
if (outsw) { /* putting data in tmp file */
|
|
if (*tape == 0)
|
|
tape = iotape; /* rewind encryption tape */
|
|
*inptr = ch ^ *tape++; /* re-encrypt and replace value */
|
|
}
|
|
inptr++;
|
|
return (ch);
|
|
}
|
|
|
|
static char breakch; /* tell which char ended rnum */
|
|
|
|
/* "read" data from virtual file */
|
|
void
|
|
rdata(void)
|
|
{
|
|
int sect;
|
|
char ch;
|
|
|
|
inptr = data_file; /* Pointer to virtual data file */
|
|
srandom(SEED); /* which is lightly encrypted. */
|
|
|
|
classes = 1;
|
|
for (;;) { /* read data sections */
|
|
sect = next() - '0'; /* 1st digit of section number */
|
|
#ifdef VERBOSE
|
|
printf("Section %c", sect + '0');
|
|
#endif
|
|
if ((ch = next()) != LF) { /* is there a second digit? */
|
|
FLUSHLF;
|
|
#ifdef VERBOSE
|
|
putchar(ch);
|
|
#endif
|
|
sect = 10 * sect + ch - '0';
|
|
}
|
|
#ifdef VERBOSE
|
|
putchar('\n');
|
|
#endif
|
|
switch (sect) {
|
|
case 0: /* finished reading database */
|
|
return;
|
|
case 1: /* long form descriptions */
|
|
rdesc(1);
|
|
break;
|
|
case 2: /* short form descriptions */
|
|
rdesc(2);
|
|
break;
|
|
case 3: /* travel table */
|
|
rtrav();
|
|
break;
|
|
case 4: /* vocabulary */
|
|
rvoc();
|
|
break;
|
|
case 5: /* object descriptions */
|
|
rdesc(5);
|
|
break;
|
|
case 6: /* arbitrary messages */
|
|
rdesc(6);
|
|
break;
|
|
case 7: /* object locations */
|
|
rlocs();
|
|
break;
|
|
case 8: /* action defaults */
|
|
rdefault();
|
|
break;
|
|
case 9: /* liquid assets */
|
|
rliq();
|
|
break;
|
|
case 10: /* class messages */
|
|
rdesc(10);
|
|
break;
|
|
case 11: /* hints */
|
|
rhints();
|
|
break;
|
|
case 12: /* magic messages */
|
|
rdesc(12);
|
|
break;
|
|
default:
|
|
printf("Invalid data section number: %d\n", sect);
|
|
for (;;)
|
|
putchar(next());
|
|
}
|
|
if (breakch != LF) /* routines return after "-1" */
|
|
FLUSHLF;
|
|
}
|
|
}
|
|
|
|
static char nbf[12];
|
|
|
|
/* read initial location num */
|
|
static int
|
|
rnum(void)
|
|
{
|
|
char *s;
|
|
tape = iotape; /* restart encryption tape */
|
|
for (s = nbf, *s = 0;; s++)
|
|
if ((*s = next()) == TAB || *s == '\n' || *s == LF)
|
|
break;
|
|
breakch = *s; /* save char for rtrav() */
|
|
*s = 0; /* got the number as ascii */
|
|
if (nbf[0] == '-')
|
|
return (-1); /* end of data */
|
|
return (atoi(nbf)); /* convert it to integer */
|
|
}
|
|
|
|
static char *seekhere;
|
|
|
|
/* read description-format msgs */
|
|
static void
|
|
rdesc(int sect)
|
|
{
|
|
int locc;
|
|
char *seekstart, *maystart;
|
|
|
|
seekhere = inptr; /* Where are we in virtual file? */
|
|
outsw = 1; /* these msgs go into tmp file */
|
|
for (oldloc = -1, seekstart = seekhere;;) {
|
|
maystart = inptr; /* maybe starting new entry */
|
|
if ((locc = rnum()) != oldloc && oldloc >= 0 /* finished msg */
|
|
/* unless sect 5 */
|
|
&& !(sect == 5 && (locc == 0 || locc >= 100))) {
|
|
switch (sect) { /* now put it into right table */
|
|
case 1:/* long descriptions */
|
|
ltext[oldloc].seekadr = seekhere;
|
|
ltext[oldloc].txtlen = maystart - seekstart;
|
|
break;
|
|
case 2:/* short descriptions */
|
|
stext[oldloc].seekadr = seekhere;
|
|
stext[oldloc].txtlen = maystart - seekstart;
|
|
break;
|
|
case 5:/* object descriptions */
|
|
ptext[oldloc].seekadr = seekhere;
|
|
ptext[oldloc].txtlen = maystart - seekstart;
|
|
break;
|
|
case 6:/* random messages */
|
|
if (oldloc >= RTXSIZE)
|
|
errx(1,"Too many random msgs");
|
|
rtext[oldloc].seekadr = seekhere;
|
|
rtext[oldloc].txtlen = maystart - seekstart;
|
|
break;
|
|
case 10: /* class messages */
|
|
ctext[classes].seekadr = seekhere;
|
|
ctext[classes].txtlen = maystart - seekstart;
|
|
cval[classes++] = oldloc;
|
|
break;
|
|
case 12: /* magic messages */
|
|
if (oldloc >= MAGSIZE)
|
|
errx(1,"Too many magic msgs");
|
|
mtext[oldloc].seekadr = seekhere;
|
|
mtext[oldloc].txtlen = maystart - seekstart;
|
|
break;
|
|
default:
|
|
errx(1,"rdesc called with bad section");
|
|
}
|
|
seekhere += maystart - seekstart;
|
|
}
|
|
if (locc < 0) {
|
|
outsw = 0; /* turn off output */
|
|
seekhere += 3; /* -1<delimiter> */
|
|
return;
|
|
}
|
|
if (sect != 5 || (locc > 0 && locc < 100)) {
|
|
if (oldloc != locc) /* starting a new message */
|
|
seekstart = maystart;
|
|
oldloc = locc;
|
|
}
|
|
FLUSHLF; /* scan the line */
|
|
}
|
|
}
|
|
|
|
/* read travel table */
|
|
static void
|
|
rtrav(void)
|
|
{
|
|
int locc;
|
|
struct travlist *t = NULL;
|
|
char *s;
|
|
char buf[12];
|
|
int len, m, n, entries = 0;
|
|
|
|
for (oldloc = -1;;) { /* get another line */
|
|
/* end of entry */
|
|
if ((locc = rnum()) != oldloc && oldloc >= 0 && t) {
|
|
t->next = 0; /* terminate the old entry */
|
|
/* printf("%d:%d entries\n",oldloc,entries); */
|
|
/* twrite(oldloc); */
|
|
}
|
|
if (locc == -1)
|
|
return;
|
|
if (locc != oldloc) { /* getting a new entry */
|
|
t = travel[locc] = calloc(1, sizeof(*t));
|
|
if (t == NULL)
|
|
err(1, NULL);
|
|
/* printf("New travel list for %d\n",locc); */
|
|
entries = 0;
|
|
oldloc = locc;
|
|
}
|
|
for (s = buf;; s++) /* get the newloc number /ASCII */
|
|
if ((*s = next()) == TAB || *s == LF)
|
|
break;
|
|
*s = 0;
|
|
len = length(buf) - 1; /* quad long number handling */
|
|
/* printf("Newloc: %s (%d chars)\n",buf,len); */
|
|
if (len < 4) { /* no "m" conditions */
|
|
m = 0;
|
|
n = atoi(buf); /* newloc mod 1000 = newloc */
|
|
} else { /* a long integer */
|
|
n = atoi(buf + len - 3);
|
|
buf[len - 3] = 0; /* terminate newloc/1000 */
|
|
m = atoi(buf);
|
|
}
|
|
while (breakch != LF) { /* only do one line at a time */
|
|
if (t == NULL)
|
|
abort();
|
|
if (entries++) {
|
|
t->next = calloc(1, sizeof(*t));
|
|
if (t->next == NULL)
|
|
err(1, NULL);
|
|
t = t->next;
|
|
}
|
|
t->tverb = rnum(); /* get verb from the file */
|
|
t->tloc = n; /* table entry mod 1000 */
|
|
t->conditions = m; /* table entry / 1000 */
|
|
/* printf("entry %d for %d\n",entries,locc); */
|
|
}
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
|
|
/* travel options from this loc */
|
|
void
|
|
twrite(int loq)
|
|
{
|
|
struct travlist *t;
|
|
printf("If");
|
|
speak(<ext[loq]);
|
|
printf("then\n");
|
|
for (t = travel[loq]; t != 0; t = t->next) {
|
|
printf("verb %d takes you to ", t->tverb);
|
|
if (t->tloc <= 300)
|
|
speak(<ext[t->tloc]);
|
|
else
|
|
if (t->tloc <= 500)
|
|
printf("special code %d\n", t->tloc - 300);
|
|
else
|
|
rspeak(t->tloc - 500);
|
|
printf("under conditions %d\n", t->conditions);
|
|
}
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
/* read the vocabulary */
|
|
static void
|
|
rvoc(void)
|
|
{
|
|
char *s;
|
|
int idx;
|
|
char buf[6];
|
|
for (;;) {
|
|
idx = rnum();
|
|
if (idx < 0)
|
|
break;
|
|
for (s = buf, *s = 0;; s++) /* get the word */
|
|
if ((*s = next()) == TAB || *s == '\n' || *s == LF
|
|
|| *s == ' ')
|
|
break;
|
|
/* terminate word with newline, LF, tab, blank */
|
|
if (*s != '\n' && *s != LF)
|
|
FLUSHLF;/* can be comments */
|
|
*s = 0;
|
|
/* printf("\"%s\"=%d\n",buf,idx); */
|
|
vocab(buf, -2, idx);
|
|
}
|
|
/* prht(); */
|
|
}
|
|
|
|
/* initial object locations */
|
|
static void
|
|
rlocs(void)
|
|
{
|
|
for (;;) {
|
|
if ((obj = rnum()) < 0)
|
|
break;
|
|
plac[obj] = rnum(); /* initial loc for this obj */
|
|
if (breakch == TAB) /* there's another entry */
|
|
fixd[obj] = rnum();
|
|
else
|
|
fixd[obj] = 0;
|
|
}
|
|
}
|
|
|
|
/* default verb messages */
|
|
static void
|
|
rdefault(void)
|
|
{
|
|
for (;;) {
|
|
if ((verb = rnum()) < 0)
|
|
break;
|
|
actspeak[verb] = rnum();
|
|
}
|
|
}
|
|
|
|
/* liquid assets &c: cond bits */
|
|
static void
|
|
rliq(void)
|
|
{
|
|
int bitnum;
|
|
for (;;) { /* read new bit list */
|
|
if ((bitnum = rnum()) < 0)
|
|
break;
|
|
for (;;) { /* read locs for bits */
|
|
int n = rnum();
|
|
if (n < 0)
|
|
break;
|
|
cond[n] |= setbit[bitnum];
|
|
if (breakch == LF)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
rhints(void)
|
|
{
|
|
int hintnum, i;
|
|
hintmax = 0;
|
|
for (;;) {
|
|
if ((hintnum = rnum()) < 0)
|
|
break;
|
|
for (i = 1; i < 5; i++)
|
|
hints[hintnum][i] = rnum();
|
|
if (hintnum > hintmax)
|
|
hintmax = hintnum;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
rspeak(int msg)
|
|
{
|
|
if (msg != 0)
|
|
speak(&rtext[msg]);
|
|
}
|
|
|
|
|
|
void
|
|
mspeak(int msg)
|
|
{
|
|
if (msg != 0)
|
|
speak(&mtext[msg]);
|
|
}
|
|
|
|
|
|
/* read, decrypt, and print a message (not ptext) */
|
|
/* msg is a pointer to seek address and length of mess */
|
|
void
|
|
speak(const struct text *msg)
|
|
{
|
|
char *s, nonfirst;
|
|
|
|
s = msg->seekadr;
|
|
nonfirst = 0;
|
|
while (s - msg->seekadr < msg->txtlen) { /* read a line at a time */
|
|
tape = iotape; /* restart decryption tape */
|
|
while ((*s++ ^ *tape++) != TAB); /* read past loc num */
|
|
/* assume tape is longer than location number */
|
|
/* plus the lookahead put together */
|
|
if ((*s ^ *tape) == '>' &&
|
|
(*(s + 1) ^ *(tape + 1)) == '$' &&
|
|
(*(s + 2) ^ *(tape + 2)) == '<')
|
|
break;
|
|
if (blklin && !nonfirst++)
|
|
putchar('\n');
|
|
do {
|
|
if (*tape == 0)
|
|
tape = iotape; /* rewind decryp tape */
|
|
putchar(*s ^ *tape);
|
|
} while ((*s++ ^ *tape++) != LF); /* better end with LF */
|
|
}
|
|
}
|
|
|
|
/* read, decrypt and print a ptext message */
|
|
/* msg is the number of all the p msgs for this place */
|
|
/* assumes object 1 doesn't have prop 1, obj 2 no prop 2 &c */
|
|
void
|
|
pspeak(int m, int skip)
|
|
{
|
|
char *s, nonfirst;
|
|
char *numst;
|
|
struct text *msg;
|
|
char *tbuf;
|
|
|
|
msg = &ptext[m];
|
|
if ((tbuf = (char *) malloc(msg->txtlen + 1)) == NULL)
|
|
err(1, NULL);
|
|
memcpy(tbuf, msg->seekadr, msg->txtlen + 1); /* Room to null */
|
|
s = tbuf;
|
|
|
|
nonfirst = 0;
|
|
while (s - tbuf < msg->txtlen) { /* read line at a time */
|
|
tape = iotape; /* restart decryption tape */
|
|
for (numst = s; (*s ^= *tape++) != TAB; s++); /* get number */
|
|
|
|
/* Temporarily trash the string (cringe) */
|
|
*s++ = 0; /* decrypting number within the string */
|
|
|
|
if (atoi(numst) != 100 * skip && skip >= 0) {
|
|
while ((*s++ ^ *tape++) != LF) /* flush the line */
|
|
if (*tape == 0)
|
|
tape = iotape;
|
|
continue;
|
|
}
|
|
if ((*s ^ *tape) == '>' && (*(s + 1) ^ *(tape + 1)) == '$' &&
|
|
(*(s + 2) ^ *(tape + 2)) == '<')
|
|
break;
|
|
if (blklin && !nonfirst++)
|
|
putchar('\n');
|
|
do {
|
|
if (*tape == 0)
|
|
tape = iotape;
|
|
putchar(*s ^ *tape);
|
|
} while ((*s++ ^ *tape++) != LF); /* better end with LF */
|
|
if (skip < 0)
|
|
break;
|
|
}
|
|
free(tbuf);
|
|
}
|