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Allow running without TTY (e.g. in Instruments) 

Continue running if TTY cannot be opened
This commit is contained in:
Brad Grantham 2016-11-20 12:27:58 -08:00
parent 9554f80a00
commit d212e8f112
1 changed files with 11 additions and 3 deletions
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14
keyboard.cpp
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@ -111,21 +111,26 @@ unsigned char get_any_key_down_and_clear_strobe()
return 0x00; return 0x00;
} }
bool started = false;
void start_keyboard() void start_keyboard()
{ {
// Set raw mode on stdin. // Set raw mode on stdin.
if (ttyraw(0) < 0) { if (ttyraw(0) < 0) {
fprintf(stderr,"Can't go to raw mode.\n"); fprintf(stderr,"Can't go to raw mode. Oh, well!\n");
exit(1); // exit(1);
return;
} }
started = true;
} }
void stop_keyboard() void stop_keyboard()
{ {
if (ttyreset(0) < 0) { if (started && (ttyreset(0) < 0)) {
fprintf(stderr, "Cannot reset terminal!\n"); fprintf(stderr, "Cannot reset terminal!\n");
exit(-1); exit(-1);
} }
started = false;
} }
bool peek_key(char *k) bool peek_key(char *k)
@ -145,6 +150,9 @@ void poll_keyboard()
int i; int i;
char c; char c;
if(!started)
return;
i = read(0, &c, 1); i = read(0, &c, 1);
if (i == -1) { if (i == -1) {
if (errno == EAGAIN) { if (errno == EAGAIN) {