version 1.12, 2000/09/23 15:06:08
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version 1.24, 2006/04/14 12:18:50
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/* direct key io driver |
/* direct key io driver |
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Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc. |
Copyright (C) 1995,1996,1997,1998,1999,2002,2003 Free Software Foundation, Inc. |
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This file is part of Gforth. |
This file is part of Gforth. |
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Line 16
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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. |
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The following is stolen from the readline library for bash |
The following is stolen from the readline library for bash |
*/ |
*/ |
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Line 26
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*/ |
*/ |
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#include "config.h" |
#include "config.h" |
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#include "forth.h" |
#include <sys/time.h> |
#include <sys/time.h> |
#include <sys/types.h> |
#include <sys/types.h> |
#include <unistd.h> |
#include <unistd.h> |
Line 51 typedef unsigned int uint32_t;
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Line 52 typedef unsigned int uint32_t;
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#include <sys/filio.h> |
#include <sys/filio.h> |
#endif |
#endif |
#include <setjmp.h> |
#include <setjmp.h> |
#include "forth.h" |
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#include "io.h" |
#include "io.h" |
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#ifndef MSDOS |
#ifndef MSDOS |
Line 447 void deprep_terminal ()
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Line 447 void deprep_terminal ()
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#define VTIME VEOL |
#define VTIME VEOL |
#endif |
#endif |
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#include <locale.h> |
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void prep_terminal () |
void prep_terminal () |
{ |
{ |
int tty = fileno (stdin); |
int tty = fileno (stdin); |
Line 472 void prep_terminal ()
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Line 474 void prep_terminal ()
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return; /* added by MdG */ |
return; /* added by MdG */ |
} /* added by MdG */ |
} /* added by MdG */ |
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setlocale(LC_ALL, ""); |
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setlocale(LC_NUMERIC, "C"); |
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/* 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 613 void deprep_terminal ()
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Line 618 void deprep_terminal ()
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} |
} |
#endif /* NEW_TTY_DRIVER */ |
#endif /* NEW_TTY_DRIVER */ |
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/* If a character is available to be read, then read it |
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and stuff it into IBUFFER. Otherwise, just return. */ |
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long pending = -1L; |
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long key_avail (FILE * stream) |
long key_avail (FILE * stream) |
{ |
{ |
int tty = fileno (stream); |
int tty = fileno (stream); |
int chars_avail = pending; |
fd_set selin; |
int result; |
static int now[2] = { 0 , 0 }; |
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int res; |
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if(!terminal_prepped) prep_terminal(); |
setvbuf(stream, NULL, _IONBF, 0); |
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if(!terminal_prepped && stream == stdin) |
#ifndef _WIN32 |
prep_terminal(); |
if(isatty (tty)) { |
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result = ioctl (tty, FIONREAD, &chars_avail); |
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} |
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#else |
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{ |
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fd_set selin; |
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static int now[2] = { 0 , 0 }; |
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int res; |
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FD_ZERO(&selin); |
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FD_SET(tty, &selin); |
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chars_avail=select(1, &selin, NULL, NULL, now); |
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} |
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#endif |
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if(chars_avail == -1L) { |
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unsigned char inchar; |
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fcntl(tty, F_SETFL, O_NDELAY); |
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result = read(tty, &inchar, sizeof(char)); |
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if(result == sizeof(char)) { |
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chars_avail = 1; |
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pending = (long)inchar; |
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} else { |
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chars_avail = 0; |
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} |
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fcntl(tty, F_SETFL, 0); |
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} |
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return chars_avail; |
FD_ZERO(&selin); |
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FD_SET(tty, &selin); |
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return select(1, &selin, NULL, NULL, now); |
} |
} |
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/* Get a key from the buffer of characters to be read. |
/* Get a key from the buffer of characters to be read. |
Line 671 Cell getkey(FILE * stream)
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Line 646 Cell getkey(FILE * stream)
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Cell result; |
Cell result; |
unsigned char c; |
unsigned char c; |
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if(!terminal_prepped) |
setvbuf(stream, NULL, _IONBF, 0); |
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if(!terminal_prepped && stream == stdin) |
prep_terminal(); |
prep_terminal(); |
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while (pending < 0) |
result = fread(&c, sizeof(c), 1, stream); |
{ |
return result==0 ? EOF : c; |
result = read (fileno (stream), &c, sizeof (char)); |
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if (result == sizeof (char)) |
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return /* (c == 0x7F ? 0x08 :*/ c /*)*/; |
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/* If zero characters are returned, then the file that we are |
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reading from is empty! Return EOF in that case. */ |
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if (result == 0) |
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return (EOF); |
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/* If the error that we received was SIGINT, then try again, |
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this is simply an interrupted system call to read (). |
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Otherwise, some error ocurred, also signifying EOF. */ |
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if (errno != EINTR) |
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return (EOF); |
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} |
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/* otherwise there is a character pending; |
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return it and delete pending char */ |
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result = (Cell) pending; |
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pending = -1L; |
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return result; |
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} |
} |
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#ifdef TEST |
#ifdef TEST |