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/*
Terminal I/O routines for SEDT (a la UNIX)
*/
#include <stdio.h>
#include <stdlib.h>
#if defined(ULTRIX)
#include <sys/ioctl.h>
#include <sgtty.h>
#else
#include <sys/ioctl.h>
#if defined(CONVEX)
#include <sys/termios.h>
#else
#if defined(LINUX)
#include <termios.h>
#else
#include <termio.h>
#endif
#endif
#if defined(SGI)
#include <sys/ttold.h>
#endif
#endif
int tty;
#if defined(ULTRIX)
struct sgttyb restore, special;
#else
#if defined(CONVEX) | defined(LINUX)
struct termios restore, special;
#else
struct termio restore, special;
#endif
#endif
UInit()
{
/*char *ttyname();*/
/*
Open up the terminal device user is on. Get the characteristics
of this terminal, make a copy, and set for no post-processing,
no echo, no canonical input processing, and process each character
when typed rather than await a new-line.
*/
if((tty = open(ttyname(fileno(stdin)), 2)) <= 0)
{
perror("Can't attach the terminal");
exit(0);
}
#if defined(ULTRIX)
ioctl(tty, TIOCGETP, &restore);
#else
#if defined(LINUX)
tcgetattr(tty, &restore);
#else
ioctl(tty, TCGETA, &restore);
#endif
#endif
special = restore;
#if defined(ULTRIX)
special.sg_flags &= ~(ECHO | CRMOD);
special.sg_flags |= CBREAK;
ioctl(tty, TIOCSETP, &special);
#else
special.c_iflag &= ~ICRNL;
special.c_oflag &= ~OPOST;
special.c_lflag &= ~(ECHO | ICANON | ISIG);
special.c_cc[VEOF] = 1;
#if defined(LINUX)
tcsetattr(tty, TCSANOW, &special);
#else
ioctl(tty, TCSETA, &special);
#endif
#endif
}
UEnd()
{
/*
Restore terminal attributes and close.
*/
#if defined(ULTRIX)
ioctl(tty, TIOCSETP, &restore);
#else
#if defined(LINUX)
tcsetattr(tty, TCSANOW, &restore);
#else
ioctl(tty, TCSETA, &restore);
#endif
#endif
close(tty);
}
USysenv()
{
/*
Restore terminal attributes prior to Spawning a command.
*/
#if defined(ULTRIX)
ioctl(tty, TIOCSETP, &restore);
#else
#if defined(LINUX)
tcsetattr(tty, TCSANOW, &restore);
#else
ioctl(tty, TCSETA, &restore);
#endif
#endif
close(tty);
}
USedtenv()
{
/*
Set terminal attributes back to Sedt specifications.
*/
if((tty = open(ttyname(fileno(stdin)), 2)) <= 0)
{
perror("Can't attach the terminal");
exit(0);
}
#if defined(ULTRIX)
ioctl(tty, TIOCSETP, &special);
#else
#if defined(LINUX)
tcsetattr(tty, TCSANOW, &special);
#else
ioctl(tty, TCSETA, &special);
#endif
#endif
}
UGetrm()
{
unsigned
char key;
if((read(tty, &key, 1)) < 1)
{
perror("Can't read from terminal");
exit(0);
}
return((int)key);
}
UPutrm(string, length)
char *string;
int length;
{
write(tty, string, length);
}
#if defined(SUN)
char _toupper(C)
char C;
{return toupper(C);
}
char _tolower(C)
char C;
{return tolower(C);
}
#endif
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