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/*
* LEVEE, or Captain Video; A vi clone
*
* Copyright (c) 1982-2007 David L Parsons
* All rights reserved.
*
* Redistribution and use in source and binary forms, without or
* without modification, are permitted provided that the above
* copyright notice and this paragraph are duplicated in all such
* forms and that any documentation, advertising materials, and
* other materials related to such distribution and use acknowledge
* that the software was developed by David L Parsons (orc@pell.chi.il.us).
* My name may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE.
*/
/*
* Unix interface for levee
*/
#include "levee.h"
#ifdef OS_UNIX
#include "extern.h"
#include <termios.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/ioctl.h>
#if USE_TERMCAP
#include <termcap.h>
#endif
int
min(a,b)
int a, b;
{
return (a>b) ? b : a;
}
int
max(a,b)
int a, b;
{
return (a<b) ? b : a;
}
void strput(s)
char *s;
{
#if USE_TERMCAP
if (s)
tputs(s, 1, putchar);
#else
if (s)
write(1, s, strlen(s));
#endif
}
#if !HAVE_BASENAME
char *
basename(s)
char *s;
{
char *rindex();
char *p;
if (p=strrchr(s,'/'))
return 1+p;
return s;
}
#endif
#if !HAVE_TCGETATTR
#define tcgetattr(fd,t) ioctl(fd, TCGETS, t)
#define tcsetattr(fd,n,t) ioctl(fd, n, t)
#define TCSANOW TCSETAF
#endif
static int ioset = 0;
static struct termios old;
void
initcon()
{
struct termios new;
if (!ioset) {
tcgetattr(0, &old); /* get editing keys */
Erasechar = old.c_cc[VERASE];
eraseline = old.c_cc[VKILL];
new = old;
new.c_iflag &= ~(IXON|IXOFF|IXANY|ICRNL|INLCR);
new.c_lflag &= ~(ICANON|ISIG|ECHO);
new.c_oflag = 0;
tcsetattr(0, TCSANOW, &new);
ioset=1;
}
}
void
fixcon()
{
if (ioset) {
tcsetattr(0, TCSANOW, &old);
ioset = 0;
}
}
int
getKey()
{
unsigned char c[1];
fd_set input;
fflush(stdout);
/* we're using Unix select() to wait for input, so lets hope that
* all the Unices out there support select(). If your Unix doesn't,
* you can make this work by replacing this select loop with:
*
* while (read(0,c,1) != 1)
* ;
* return c[1];
*
* ... and watch your load-average peg.
*/
while (1) {
FD_ZERO(&input);
FD_SET(0, &input);
select(1, &input, 0, 0, 0);
if( read(0,c,1) == 1)
return c[0];
};
}
#endif
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