Initial import of qemu-2.4.1HEADmaster

1 files changed, 143 insertions, 0 deletions

diff --git a/roms/ipxe/src/hci/mucurses/kb.c b/roms/ipxe/src/hci/mucurses/kb.c
new file mode 100644
index 00000000..b38c8c14
--- /dev/null
+++ b/roms/ipxe/src/hci/mucurses/kb.c
@@ -0,0 +1,143 @@
+#include <curses.h>
+#include <stddef.h>
+#include <unistd.h>
+#include "mucurses.h"
+
+/** @file
+ *
+ * MuCurses keyboard input handling functions
+ */
+
+#define INPUT_DELAY 		200 // half-blocking delay timer resolution (ms)
+#define INPUT_DELAY_TIMEOUT 	1000 // half-blocking delay timeout
+
+int m_delay; /* 
+		< 0 : blocking read
+		0   : non-blocking read
+		> 0 : timed blocking read
+	     */
+bool m_echo;
+bool m_cbreak;
+
+static int _wgetc ( WINDOW *win ) {
+	int timer, c;
+
+	if ( win == NULL )
+		return ERR;
+
+	timer = INPUT_DELAY_TIMEOUT;
+	while ( ! win->scr->peek( win->scr ) ) {
+		if ( m_delay == 0 ) // non-blocking read
+			return ERR;
+		if ( timer > 0 ) {  // time-limited blocking read
+			if ( m_delay > 0 )
+				timer -= INPUT_DELAY;
+			mdelay( INPUT_DELAY );
+		} else { return ERR; } // non-blocking read
+	}
+
+	c = win->scr->getc( win->scr );
+
+	if ( m_echo && ( c >= 32 && c <= 126 ) ) // printable ASCII characters
+		_wputch( win, (chtype) ( c | win->attrs ), WRAP );
+
+	return c;
+}
+
+/**
+ * Pop a character from the FIFO into a window
+ *
+ * @v *win	window in which to echo input
+ * @ret c	char from input stream
+ */
+int wgetch ( WINDOW *win ) {
+	int c;
+
+	c = _wgetc( win );
+
+	if ( m_echo ) {
+		if ( c >= KEY_MIN ) {
+			switch(c) {
+			case KEY_LEFT :
+			case KEY_BACKSPACE :
+				_wcursback( win );
+				wdelch( win );
+				break;
+			default :
+				beep();
+				break;
+			}
+		} else {
+			_wputch( win, (chtype)( c | win->attrs ), WRAP );
+		}
+	}
+
+	return c;
+}
+
+/**
+ * Read at most n characters from the FIFO into a window
+ *
+ * @v *win	window in which to echo input
+ * @v *str	pointer to string in which to store result
+ * @v n		maximum number of characters to read into string (inc. NUL)
+ * @ret rc	return status code
+ */
+int wgetnstr ( WINDOW *win, char *str, int n ) {
+	char *_str;
+	int c;
+
+	if ( n == 0 ) {
+		*str = '\0';
+		return OK;
+	}
+
+	_str = str;
+
+	while ( ( c = _wgetc( win ) ) != ERR ) {
+		/* termination enforcement - don't let us go past the
+		   end of the allocated buffer... */
+		if ( n == 0 && ( c >= 32 && c <= 126 ) ) {
+			_wcursback( win );
+			wdelch( win );
+		} else {
+			if ( c >= KEY_MIN ) {
+				switch(c) {
+				case KEY_LEFT :
+				case KEY_BACKSPACE :
+					_wcursback( win );
+					wdelch( win );
+					break;
+				case KEY_ENTER :
+					*_str = '\0';
+					return OK;
+				default :
+					beep();
+					break;
+				}
+			}
+			if ( c >= 32 && c <= 126 ) {
+				*(_str++) = c; n--;
+			}
+		}
+	}
+
+	return ERR;
+}
+
+
+/**
+ *
+ */
+int echo ( void ) {
+	m_echo = TRUE;
+	return OK;
+}
+
+/**
+ *
+ */
+int noecho ( void ) {
+	m_echo = FALSE;
+	return OK;
+}