version 1.3, 1997/07/31 16:17:26
|
version 1.24, 2006/04/14 12:18:50
|
Line 1
|
Line 1
|
/* direct key io driver; signal handler |
/* direct key io driver |
|
|
Copyright (C) 1995 Free Software Foundation, Inc. |
Copyright (C) 1995,1996,1997,1998,1999,2002,2003 Free Software Foundation, Inc. |
|
|
This file is part of Gforth. |
This file is part of Gforth. |
|
|
Line 16
|
Line 16
|
|
|
You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
along with this program; if not, write to the Free Software |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
|
|
The following is stolen from the readline library for bash |
The following is stolen from the readline library for bash |
*/ |
*/ |
Line 26
|
Line 26
|
*/ |
*/ |
|
|
#include "config.h" |
#include "config.h" |
|
#include "forth.h" |
|
#include <sys/time.h> |
|
#include <sys/types.h> |
#include <unistd.h> |
#include <unistd.h> |
|
|
#if defined(apollo) || defined(_WIN32) |
#if defined(apollo) || defined(_WIN32) |
#define _POSIX_VERSION |
#define _POSIX_VERSION |
#endif |
#endif |
|
|
|
#if !defined(Solaris) && defined(sun) && defined(__svr4__) |
|
#define Solaris |
|
typedef unsigned int uint32_t; |
|
#endif |
|
|
#include <stdio.h> |
#include <stdio.h> |
#include <signal.h> |
#include <signal.h> |
#include <string.h> |
#include <string.h> |
#include <sys/types.h> |
|
#if !defined(apollo) && !defined(MSDOS) |
#if !defined(apollo) && !defined(MSDOS) |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
#endif |
#endif |
Line 45
|
Line 52
|
#include <sys/filio.h> |
#include <sys/filio.h> |
#endif |
#endif |
#include <setjmp.h> |
#include <setjmp.h> |
#include "forth.h" |
|
#include "io.h" |
#include "io.h" |
|
|
#ifndef MSDOS |
#ifndef MSDOS |
Line 441 void deprep_terminal ()
|
Line 447 void deprep_terminal ()
|
#define VTIME VEOL |
#define VTIME VEOL |
#endif |
#endif |
|
|
|
#include <locale.h> |
|
|
void prep_terminal () |
void prep_terminal () |
{ |
{ |
int tty = fileno (stdin); |
int tty = fileno (stdin); |
Line 466 void prep_terminal ()
|
Line 474 void prep_terminal ()
|
return; /* added by MdG */ |
return; /* added by MdG */ |
} /* added by MdG */ |
} /* added by MdG */ |
|
|
|
setlocale(LC_ALL, ""); |
|
setlocale(LC_NUMERIC, "C"); |
|
|
/* Try to keep this function from being INTerrupted. We can do it |
/* Try to keep this function from being INTerrupted. We can do it |
on POSIX and systems with BSD-like signal handling. */ |
on POSIX and systems with BSD-like signal handling. */ |
#if defined (HAVE_POSIX_SIGNALS) |
#if defined (HAVE_POSIX_SIGNALS) |
Line 607 void deprep_terminal ()
|
Line 618 void deprep_terminal ()
|
} |
} |
#endif /* NEW_TTY_DRIVER */ |
#endif /* NEW_TTY_DRIVER */ |
|
|
/* If a character is available to be read, then read it |
long key_avail (FILE * stream) |
and stuff it into IBUFFER. Otherwise, just return. */ |
|
|
|
long pending = -1L; |
|
|
|
long key_avail (stream) |
|
FILE *stream; |
|
{ |
{ |
int tty = fileno (stream); |
int tty = fileno (stream); |
long chars_avail = pending; |
fd_set selin; |
int result; |
static int now[2] = { 0 , 0 }; |
|
int res; |
if(!terminal_prepped) prep_terminal(); |
|
|
setvbuf(stream, NULL, _IONBF, 0); |
#ifndef _WIN32 |
if(!terminal_prepped && stream == stdin) |
result = ioctl (tty, FIONREAD, &chars_avail); |
prep_terminal(); |
#else |
|
{ |
FD_ZERO(&selin); |
fd_set selin; |
FD_SET(tty, &selin); |
static int now[2] = { 0 , 0 }; |
return select(1, &selin, NULL, NULL, now); |
int res; |
|
|
|
FD_ZERO(&selin); |
|
FD_SET(tty, &selin); |
|
chars_avail=select(1, &selin, NULL, NULL, now); |
|
} |
|
#endif |
|
|
|
if(chars_avail == -1L) |
|
{ unsigned char inchar; |
|
|
|
fcntl(tty, F_SETFL, O_NDELAY); |
|
result = read(tty, &inchar, sizeof(char)); |
|
if(result == sizeof(char)) |
|
{ |
|
chars_avail = 1; |
|
pending = (long)inchar; |
|
} |
|
else |
|
chars_avail = 0; |
|
fcntl(tty, F_SETFL, 0); |
|
} |
|
|
|
return chars_avail; |
|
} |
} |
|
|
/* Get a key from the buffer of characters to be read. |
/* Get a key from the buffer of characters to be read. |
Line 660 long key_avail (stream)
|
Line 641 long key_avail (stream)
|
/* When compiling and running in the `Posix' environment, Ultrix does |
/* When compiling and running in the `Posix' environment, Ultrix does |
not restart system calls, so this needs to do it. */ |
not restart system calls, so this needs to do it. */ |
|
|
unsigned char getkey(stream) |
Cell getkey(FILE * stream) |
FILE *stream; |
|
{ |
{ |
int result; |
Cell result; |
unsigned char c; |
unsigned char c; |
|
|
if(!terminal_prepped) prep_terminal(); |
setvbuf(stream, NULL, _IONBF, 0); |
|
if(!terminal_prepped && stream == stdin) |
while (pending < 0) |
prep_terminal(); |
{ |
|
result = read (fileno (stream), &c, sizeof (char)); |
|
|
|
if (result == sizeof (char)) |
|
return /* (c == 0x7F ? 0x08 :*/ c /*)*/; |
|
|
|
/* If zero characters are returned, then the file that we are |
|
reading from is empty! Return EOF in that case. */ |
|
if (result == 0) |
|
return CTRL('D'); |
|
|
|
/* If the error that we received was SIGINT, then try again, |
|
this is simply an interrupted system call to read (). |
|
Otherwise, some error ocurred, also signifying EOF. */ |
|
if (errno != EINTR) |
|
return (EOF); |
|
} |
|
|
|
result = (int) pending; |
result = fread(&c, sizeof(c), 1, stream); |
pending = -1L; |
return result==0 ? EOF : c; |
|
|
return result; |
|
} |
} |
|
|
#ifdef TEST |
#ifdef TEST |
Line 734 int main()
|
Line 695 int main()
|
#endif |
#endif |
#endif /* MSDOS */ |
#endif /* MSDOS */ |
|
|
/* signal handling adapted from pfe by Dirk Zoller (Copylefted) - anton */ |
|
|
|
static void |
|
graceful_exit (int sig) |
|
{ |
|
deprep_terminal(); |
|
fprintf (stderr, "\n\n%s.\n", strsignal (sig)); |
|
exit (0x80|sig); |
|
} |
|
|
|
jmp_buf throw_jmp_buf; |
|
|
|
static void |
|
signal_throw(int sig) |
|
{ |
|
int code; |
|
struct { |
|
int signal; |
|
int throwcode; |
|
} *p, throwtable[] = { |
|
{ SIGINT, -28 }, |
|
{ SIGFPE, -55 }, |
|
#ifdef SIGBUS |
|
{ SIGBUS, -23 }, |
|
#endif |
|
{ SIGSEGV, -9 }, |
|
}; |
|
signal(sig,signal_throw); |
|
for (code=-256-sig, p=throwtable; p<throwtable+(sizeof(throwtable)/sizeof(*p)); p++) |
|
if (sig == p->signal) { |
|
code = p->throwcode; |
|
break; |
|
} |
|
longjmp(throw_jmp_buf,code); /* or use siglongjmp ? */ |
|
} |
|
|
|
UCell cols=80; |
|
#if defined(MSDOS) || defined (_WIN32) |
|
UCell rows=25; |
|
#else |
|
UCell rows=24; |
|
#endif |
|
|
|
#ifdef SIGCONT |
|
static void termprep (int sig) |
|
{ |
|
signal(sig,termprep); |
|
terminal_prepped=0; |
|
} |
|
#endif |
|
|
|
#ifdef SIGWINCH |
|
void get_winsize() |
|
{ |
|
#ifdef TIOCGWINSZ |
|
struct winsize size; |
|
|
|
if (ioctl (1, TIOCGWINSZ, (char *) &size) >= 0) { |
|
rows = size.ws_row; |
|
cols = size.ws_col; |
|
} |
|
#else |
|
char *s, *ends; |
|
unsigned long ul; |
|
if (s=getenv("LINES")) { |
|
rows=atoi(s); |
|
if (rows==0) |
|
rows=24; |
|
} |
|
if (s=getenv("COLUMNS")) { |
|
rows=atoi(s); |
|
if (rows==0) |
|
cols=80; |
|
} |
|
#endif |
|
} |
|
|
|
static void change_winsize(int sig) |
|
{ |
|
signal(sig,change_winsize); |
|
#ifdef TIOCGWINSZ |
|
get_winsize(); |
|
#endif |
|
} |
|
#endif |
|
|
|
void install_signal_handlers (void) |
|
{ |
|
|
|
#if 0 |
|
/* these signals are handled right by default, no need to handle them; |
|
they are listed here just for fun */ |
|
static short sigs_to_default [] = { |
|
#ifdef SIGCHLD |
|
SIGCHLD, |
|
#endif |
|
#ifdef SIGINFO |
|
SIGINFO, |
|
#endif |
|
#ifdef SIGIO |
|
SIGIO, |
|
#endif |
|
#ifdef SIGLOST |
|
SIGLOST, |
|
#endif |
|
#ifdef SIGKILL |
|
SIGKILL, |
|
#endif |
|
#ifdef SIGSTOP |
|
SIGSTOP, |
|
#endif |
|
#ifdef SIGPWR |
|
SIGPWR, |
|
#endif |
|
#ifdef SIGMSG |
|
SIGMSG, |
|
#endif |
|
#ifdef SIGDANGER |
|
SIGDANGER, |
|
#endif |
|
#ifdef SIGMIGRATE |
|
SIGMIGRATE, |
|
#endif |
|
#ifdef SIGPRE |
|
SIGPRE, |
|
#endif |
|
#ifdef SIGVIRT |
|
SIGVIRT, |
|
#endif |
|
#ifdef SIGGRANT |
|
SIGGRANT, |
|
#endif |
|
#ifdef SIGRETRACT |
|
SIGRETRACT, |
|
#endif |
|
#ifdef SIGSOUND |
|
SIGSOUND, |
|
#endif |
|
#ifdef SIGSAK |
|
SIGSAK, |
|
#endif |
|
#ifdef SIGTSTP |
|
SIGTSTP, |
|
#endif |
|
#ifdef SIGTTIN |
|
SIGTTIN, |
|
#endif |
|
#ifdef SIGTTOU |
|
SIGTTOU, |
|
#endif |
|
#ifdef SIGSTKFLT |
|
SIGSTKFLT, |
|
#endif |
|
#ifdef SIGUNUSED |
|
SIGUNUSED, |
|
#endif |
|
}; |
|
#endif |
|
|
|
static short sigs_to_throw [] = { |
|
#ifdef SIGBREAK |
|
SIGBREAK, |
|
#endif |
|
#ifdef SIGINT |
|
SIGINT, |
|
#endif |
|
#ifdef SIGILL |
|
SIGILL, |
|
#endif |
|
#ifdef SIGEMT |
|
SIGEMT, |
|
#endif |
|
#ifdef SIGFPE |
|
SIGFPE, |
|
#endif |
|
#ifdef SIGIOT |
|
SIGIOT, |
|
#endif |
|
#ifdef SIGSEGV |
|
SIGSEGV, |
|
#endif |
|
#ifdef SIGALRM |
|
SIGALRM, |
|
#endif |
|
#ifdef SIGPIPE |
|
SIGPIPE, |
|
#endif |
|
#ifdef SIGPOLL |
|
SIGPOLL, |
|
#endif |
|
#ifdef SIGPROF |
|
SIGPROF, |
|
#endif |
|
#ifdef SIGBUS |
|
SIGBUS, |
|
#endif |
|
#ifdef SIGSYS |
|
SIGSYS, |
|
#endif |
|
#ifdef SIGTRAP |
|
SIGTRAP, |
|
#endif |
|
#ifdef SIGURG |
|
SIGURG, |
|
#endif |
|
#ifdef SIGUSR1 |
|
SIGUSR1, |
|
#endif |
|
#ifdef SIGUSR2 |
|
SIGUSR2, |
|
#endif |
|
#ifdef SIGVTALRM |
|
SIGVTALRM, |
|
#endif |
|
#ifdef SIGXFSZ |
|
SIGXFSZ, |
|
#endif |
|
}; |
|
static short sigs_to_quit [] = { |
|
#ifdef SIGHUP |
|
SIGHUP, |
|
#endif |
|
#ifdef SIGQUIT |
|
SIGQUIT, |
|
#endif |
|
#ifdef SIGABRT |
|
SIGABRT, |
|
#endif |
|
#ifdef SIGTERM |
|
SIGTERM, |
|
#endif |
|
#ifdef SIGXCPU |
|
SIGXCPU, |
|
#endif |
|
}; |
|
int i; |
|
|
|
#define DIM(X) (sizeof (X) / sizeof *(X)) |
|
/* |
|
for (i = 0; i < DIM (sigs_to_ignore); i++) |
|
signal (sigs_to_ignore [i], SIG_IGN); |
|
*/ |
|
for (i = 0; i < DIM (sigs_to_throw); i++) |
|
signal (sigs_to_throw [i], die_on_signal ? graceful_exit : signal_throw); |
|
for (i = 0; i < DIM (sigs_to_quit); i++) |
|
signal (sigs_to_quit [i], graceful_exit); |
|
#ifdef SIGCONT |
|
signal (SIGCONT, termprep); |
|
#endif |
|
#ifdef SIGWINCH |
|
signal (SIGWINCH, change_winsize); |
|
#endif |
|
} |
|
/* end signal handling */ |
|