8 * MuCurses keyboard input handling functions
11 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
13 #define INPUT_DELAY 200 // half-blocking delay timer resolution (ms)
14 #define INPUT_DELAY_TIMEOUT 1000 // half-blocking delay timeout
19 > 0 : timed blocking read
24 static int _wgetc ( WINDOW *win ) {
30 timer = INPUT_DELAY_TIMEOUT;
31 while ( ! win->scr->peek( win->scr ) ) {
32 if ( m_delay == 0 ) // non-blocking read
34 if ( timer > 0 ) { // time-limited blocking read
37 mdelay( INPUT_DELAY );
38 } else { return ERR; } // non-blocking read
41 c = win->scr->getc( win->scr );
43 if ( m_echo && ( c >= 32 && c <= 126 ) ) // printable ASCII characters
44 _wputch( win, (chtype) ( c | win->attrs ), WRAP );
50 * Pop a character from the FIFO into a window
52 * @v *win window in which to echo input
53 * @ret c char from input stream
55 int wgetch ( WINDOW *win ) {
73 _wputch( win, (chtype)( c | win->attrs ), WRAP );
81 * Read at most n characters from the FIFO into a window
83 * @v *win window in which to echo input
84 * @v *str pointer to string in which to store result
85 * @v n maximum number of characters to read into string (inc. NUL)
86 * @ret rc return status code
88 int wgetnstr ( WINDOW *win, char *str, int n ) {
99 while ( ( c = _wgetc( win ) ) != ERR ) {
100 /* termination enforcement - don't let us go past the
101 end of the allocated buffer... */
102 if ( n == 0 && ( c >= 32 && c <= 126 ) ) {
106 if ( c >= KEY_MIN ) {
121 if ( c >= 32 && c <= 126 ) {
142 int noecho ( void ) {