ba5356603a
A number of C compiler suites have a math.h library that includes a yn() function name that conflicts with NetHack's yn() macro: "The y0(), y1(), and yn() functions are Bessel functions of the second kind, for orders 0, 1, and n, respectively. The argument x must be positive. The argument n should be greater than or equal to zero. If n is less than zero, there will be a negative exponent in the result." At one point, isaac64.h included math.h, although that has since been removed. Some libraries used in NetHack (Qt for one) do include math.h and that required build work-arounds to avoid the conflict. Rename the NetHack macro from yn() to y_n() and avoid the math.h conflict altogether, eliminating the need for that particular work-around.
267 lines
7.0 KiB
C
267 lines
7.0 KiB
C
/* NetHack 3.7 pcunix.c $NHDT-Date: 1596498285 2020/08/03 23:44:45 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.42 $ */
|
|
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
|
|
/*-Copyright (c) Michael Allison, 2006. */
|
|
/* NetHack may be freely redistributed. See license for details. */
|
|
|
|
/* This file collects some Unix dependencies; pager.c contains some more */
|
|
|
|
#include "hack.h"
|
|
#include "wintty.h"
|
|
|
|
#include <sys/stat.h>
|
|
#if defined(MSDOS)
|
|
#include <errno.h>
|
|
#endif
|
|
|
|
#if defined(MSDOS)
|
|
extern char orgdir[];
|
|
#endif
|
|
|
|
#if defined(TTY_GRAPHICS)
|
|
extern void backsp(void);
|
|
extern void clear_screen(void);
|
|
#endif
|
|
|
|
#if 0
|
|
static struct stat buf;
|
|
#endif
|
|
|
|
#ifdef WANT_GETHDATE
|
|
static struct stat hbuf;
|
|
#endif
|
|
|
|
#if defined(PC_LOCKING) && !defined(SELF_RECOVER)
|
|
static int eraseoldlocks(void);
|
|
#endif
|
|
|
|
#if 0
|
|
int
|
|
uptodate(int fd)
|
|
{
|
|
#ifdef WANT_GETHDATE
|
|
if(fstat(fd, &buf)) {
|
|
pline("Cannot get status of saved level? ");
|
|
return(0);
|
|
}
|
|
if(buf.st_mtime < hbuf.st_mtime) {
|
|
pline("Saved level is out of date. ");
|
|
return(0);
|
|
}
|
|
#else
|
|
#if (defined(MICRO)) && !defined(NO_FSTAT)
|
|
if(fstat(fd, &buf)) {
|
|
if(gm.moves > 1) pline("Cannot get status of saved level? ");
|
|
else pline("Cannot get status of saved game.");
|
|
return(0);
|
|
}
|
|
if(comp_times(buf.st_mtime)) {
|
|
if(gm.moves > 1) pline("Saved level is out of date.");
|
|
else pline("Saved game is out of date. ");
|
|
/* This problem occurs enough times we need to give the player
|
|
* some more information about what causes it, and how to fix.
|
|
*/
|
|
#ifdef MSDOS
|
|
pline("Make sure that your system's date and time are correct.");
|
|
pline("They must be more current than NetHack.EXE's date/time stamp.");
|
|
#endif /* MSDOS */
|
|
return(0);
|
|
}
|
|
#endif /* MICRO */
|
|
#endif /* WANT_GETHDATE */
|
|
return(1);
|
|
}
|
|
#endif
|
|
|
|
#if defined(PC_LOCKING)
|
|
#if !defined(SELF_RECOVER)
|
|
static int
|
|
eraseoldlocks(void)
|
|
{
|
|
register int i;
|
|
|
|
/* cannot use maxledgerno() here, because we need to find a lock name
|
|
* before starting everything (including the dungeon initialization
|
|
* that sets astral_level, needed for maxledgerno()) up
|
|
*/
|
|
for (i = 1; i <= MAXDUNGEON * MAXLEVEL + 1; i++) {
|
|
/* try to remove all */
|
|
set_levelfile_name(gl.lock, i);
|
|
(void) unlink(fqname(gl.lock, LEVELPREFIX, 0));
|
|
}
|
|
set_levelfile_name(gl.lock, 0);
|
|
#ifdef HOLD_LOCKFILE_OPEN
|
|
really_close();
|
|
#endif
|
|
if (unlink(fqname(gl.lock, LEVELPREFIX, 0)))
|
|
return 0; /* cannot remove it */
|
|
return (1); /* success! */
|
|
}
|
|
#endif /* SELF_RECOVER */
|
|
|
|
void
|
|
getlock(void)
|
|
{
|
|
register int fd, c, ci, ct;
|
|
int fcmask = FCMASK;
|
|
char tbuf[BUFSZ];
|
|
const char *fq_lock;
|
|
#if defined(MSDOS) && defined(NO_TERMS)
|
|
int grmode = iflags.grmode;
|
|
#endif
|
|
/* we ignore QUIT and INT at this point */
|
|
if (!lock_file(HLOCK, LOCKPREFIX, 10)) {
|
|
wait_synch();
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("Quitting.");
|
|
}
|
|
|
|
/* regularize(lock); */ /* already done in pcmain */
|
|
Sprintf(tbuf, "%s", fqname(gl.lock, LEVELPREFIX, 0));
|
|
set_levelfile_name(gl.lock, 0);
|
|
fq_lock = fqname(gl.lock, LEVELPREFIX, 1);
|
|
if ((fd = open(fq_lock, 0)) == -1) {
|
|
if (errno == ENOENT)
|
|
goto gotlock; /* no such file */
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
perror(fq_lock);
|
|
unlock_file(HLOCK);
|
|
error("Cannot open %s", fq_lock);
|
|
}
|
|
|
|
(void) nhclose(fd);
|
|
|
|
if (iflags.window_inited) {
|
|
#ifdef SELF_RECOVER
|
|
c = y_n("There are files from a game in progress under your name. "
|
|
"Recover?");
|
|
#else
|
|
pline("There is already a game in progress under your name.");
|
|
pline("You may be able to use \"recover %s\" to get it back.\n",
|
|
tbuf);
|
|
c = y_n("Do you want to destroy the old game?");
|
|
#endif
|
|
} else {
|
|
#if defined(MSDOS) && defined(NO_TERMS)
|
|
grmode = iflags.grmode;
|
|
if (grmode)
|
|
gr_finish();
|
|
#endif
|
|
c = 'n';
|
|
ct = 0;
|
|
#ifdef SELF_RECOVER
|
|
msmsg("There are files from a game in progress under your name. "
|
|
"Recover? [yn]");
|
|
#else
|
|
msmsg("\nThere is already a game in progress under your name.\n");
|
|
msmsg("If this is unexpected, you may be able to use \n");
|
|
msmsg("\"recover %s\" to get it back.", tbuf);
|
|
msmsg("\nDo you want to destroy the old game? [yn] ");
|
|
#endif
|
|
while ((ci = nhgetch()) != '\n') {
|
|
if (ct > 0) {
|
|
msmsg("\b \b");
|
|
ct = 0;
|
|
c = 'n';
|
|
}
|
|
if (ci == 'y' || ci == 'n' || ci == 'Y' || ci == 'N') {
|
|
ct = 1;
|
|
c = ci;
|
|
msmsg("%c", c);
|
|
}
|
|
}
|
|
}
|
|
if (c == 'y' || c == 'Y')
|
|
#ifndef SELF_RECOVER
|
|
if (eraseoldlocks()) {
|
|
goto gotlock;
|
|
} else {
|
|
unlock_file(HLOCK);
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("Couldn't destroy old game.");
|
|
}
|
|
#else /*SELF_RECOVER*/
|
|
if (recover_savefile()) {
|
|
#if defined(TTY_GRAPHICS)
|
|
if (WINDOWPORT(tty))
|
|
clear_screen(); /* display gets fouled up otherwise */
|
|
#endif
|
|
goto gotlock;
|
|
} else {
|
|
unlock_file(HLOCK);
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("Couldn't recover old game.");
|
|
}
|
|
#endif /*SELF_RECOVER*/
|
|
else {
|
|
unlock_file(HLOCK);
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("%s", "Cannot start a new game.");
|
|
}
|
|
|
|
gotlock:
|
|
fd = creat(fq_lock, fcmask);
|
|
unlock_file(HLOCK);
|
|
if (fd == -1) {
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("cannot creat file (%s.)", fq_lock);
|
|
} else {
|
|
if (write(fd, (char *) &gh.hackpid, sizeof(gh.hackpid))
|
|
!= sizeof(gh.hackpid)) {
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("cannot write lock (%s)", fq_lock);
|
|
}
|
|
if (nhclose(fd) == -1) {
|
|
#if defined(CHDIR) && !defined(NOCWD_ASSUMPTIONS)
|
|
chdirx(orgdir, 0);
|
|
#endif
|
|
error("cannot close lock (%s)", fq_lock);
|
|
}
|
|
}
|
|
#if defined(MSDOS) && defined(NO_TERMS)
|
|
if (grmode)
|
|
gr_init();
|
|
#endif
|
|
}
|
|
#endif /* PC_LOCKING */
|
|
|
|
void
|
|
regularize(register char *s)
|
|
/*
|
|
* normalize file name - we don't like .'s, /'s, spaces, and
|
|
* lots of other things
|
|
*/
|
|
{
|
|
register char *lp;
|
|
|
|
for (lp = s; *lp; lp++)
|
|
if (*lp <= ' ' || *lp == '"' || (*lp >= '*' && *lp <= ',')
|
|
|| *lp == '.' || *lp == '/' || (*lp >= ':' && *lp <= '?') ||
|
|
#ifdef OS2
|
|
*lp == '&' || *lp == '(' || *lp == ')' ||
|
|
#endif
|
|
*lp == '|' || *lp >= 127 || (*lp >= '[' && *lp <= ']'))
|
|
*lp = '_';
|
|
}
|
|
|
|
#ifdef __EMX__
|
|
void
|
|
seteuid(int i)
|
|
{
|
|
;
|
|
}
|
|
#endif
|