Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / hci / mucurses / ansi_screen.c

diff --git a/qemu/roms/ipxe/src/hci/mucurses/ansi_screen.c b/qemu/roms/ipxe/src/hci/mucurses/ansi_screen.c
new file mode 100644 (file)
index 0000000..1d3143f
--- /dev/null
+++ b/qemu/roms/ipxe/src/hci/mucurses/ansi_screen.c
@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <curses.h>
+#include <ipxe/ansicol.h>
+#include <ipxe/console.h>
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+static void ansiscr_reset(struct _curses_screen *scr) __nonnull;
+static void ansiscr_movetoyx(struct _curses_screen *scr,
+                               unsigned int y, unsigned int x) __nonnull;
+static void ansiscr_putc(struct _curses_screen *scr, chtype c) __nonnull;
+
+static unsigned int saved_usage;
+
+static void ansiscr_attrs ( struct _curses_screen *scr, attr_t attrs ) {
+       int bold = ( attrs & A_BOLD );
+       attr_t cpair = PAIR_NUMBER ( attrs );
+
+       if ( scr->attrs != attrs ) {
+               scr->attrs = attrs;
+               /* Reset attributes and set/clear bold as appropriate */
+               printf ( "\033[0;%dm", ( bold ? 1 : 22 ) );
+               /* Set foreground and background colours */
+               ansicol_set_pair ( cpair );
+       }
+}
+
+static void ansiscr_reset ( struct _curses_screen *scr ) {
+       /* Reset terminal attributes and clear screen */
+       scr->attrs = 0;
+       scr->curs_x = 0;
+       scr->curs_y = 0;
+       printf ( "\0330m" );
+       ansicol_set_pair ( CPAIR_DEFAULT );
+       printf ( "\033[2J" );
+}
+
+static void ansiscr_init ( struct _curses_screen *scr ) {
+       saved_usage = console_set_usage ( CONSOLE_USAGE_TUI );
+       ansiscr_reset ( scr );
+}
+
+static void ansiscr_exit ( struct _curses_screen *scr ) {
+       ansiscr_reset ( scr );
+       console_set_usage ( saved_usage );
+}
+
+static void ansiscr_erase ( struct _curses_screen *scr, attr_t attrs ) {
+       ansiscr_attrs ( scr, attrs );
+       printf ( "\033[2J" );
+}
+
+static void ansiscr_movetoyx ( struct _curses_screen *scr,
+                              unsigned int y, unsigned int x ) {
+       if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) {
+               /* ANSI escape sequence to update cursor position */
+               printf ( "\033[%d;%dH", ( y + 1 ), ( x + 1 ) );
+               scr->curs_x = x;
+               scr->curs_y = y;
+       }
+}
+
+static void ansiscr_putc ( struct _curses_screen *scr, chtype c ) {
+       unsigned int character = ( c & A_CHARTEXT );
+       attr_t attrs = ( c & ( A_ATTRIBUTES | A_COLOR ) );
+
+       /* Update attributes if changed */
+       ansiscr_attrs ( scr, attrs );
+
+       /* Print the actual character */
+       putchar ( character );
+
+       /* Update expected cursor position */
+       if ( ++(scr->curs_x) == COLS ) {
+               scr->curs_x = 0;
+               ++scr->curs_y;
+       }
+}
+
+static int ansiscr_getc ( struct _curses_screen *scr __unused ) {
+       return getchar();
+}
+
+static bool ansiscr_peek ( struct _curses_screen *scr __unused ) {
+       return iskey();
+}
+
+static void ansiscr_cursor ( struct _curses_screen *scr __unused,
+                            int visibility ) {
+       printf ( "\033[?25%c", ( visibility ? 'h' : 'l' ) );
+}
+
+SCREEN _ansi_screen = {
+       .init           = ansiscr_init,
+       .exit           = ansiscr_exit,
+       .erase          = ansiscr_erase,
+       .movetoyx       = ansiscr_movetoyx,
+       .putc           = ansiscr_putc,
+       .getc           = ansiscr_getc,
+       .peek           = ansiscr_peek,
+       .cursor         = ansiscr_cursor,
+};