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/*
* (c) The University of Glasgow 2002
*
* Win32 Console API support
*/
#if defined(_WIN32) || defined(__CYGWIN__)
/* to the end */
#include "consUtils.h"
#include <windows.h>
#include <io.h>
#if defined(__CYGWIN__)
#define _get_osfhandle get_osfhandle
#endif
int is_console__(int fd) {
DWORD st;
HANDLE h;
if (!_isatty(fd)) {
/* TTY must be a character device */
return 0;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
/* Broken handle can't be terminal */
return 0;
}
if (!GetConsoleMode(h, &st)) {
/* GetConsoleMode appears to fail when it's not a TTY. In
particular, it's what most of our terminal functions
assume works, so if it doesn't work for all intents
and purposes we're not dealing with a terminal. */
return 0;
}
return 1;
}
int
set_console_buffering__(int fd, int cooked)
{
HANDLE h;
DWORD st;
/* According to GetConsoleMode() docs, it is not possible to
leave ECHO_INPUT enabled without also having LINE_INPUT,
so we have to turn both off here. */
DWORD flgs = ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT;
if ( (h = (HANDLE)_get_osfhandle(fd)) != INVALID_HANDLE_VALUE ) {
if ( GetConsoleMode(h,&st) &&
SetConsoleMode(h, cooked ? (st | ENABLE_LINE_INPUT) : st & ~flgs) ) {
return 0;
}
}
return -1;
}
int
set_console_echo__(int fd, int on)
{
HANDLE h;
DWORD st;
DWORD flgs = ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT;
if ( (h = (HANDLE)_get_osfhandle(fd)) != INVALID_HANDLE_VALUE ) {
if ( GetConsoleMode(h,&st) &&
SetConsoleMode(h,( on ? (st | flgs) : (st & ~ENABLE_ECHO_INPUT))) ) {
return 0;
}
}
return -1;
}
int
get_console_echo__(int fd)
{
HANDLE h;
DWORD st;
if ( (h = (HANDLE)_get_osfhandle(fd)) != INVALID_HANDLE_VALUE ) {
if ( GetConsoleMode(h,&st) ) {
return (st & ENABLE_ECHO_INPUT ? 1 : 0);
}
}
return -1;
}
#endif /* defined(_WIN32) || ... */
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