keys.h

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#ifndef _GPXE_KEYS_H
#define _GPXE_KEYS_H

/** @file
 *
 * Key definitions
 *
 */

FILE_LICENCE ( GPL2_OR_LATER );

/*
 * Symbolic names for some standard ASCII characters
 *
 */

#define NUL             0x00
#define CTRL_A          0x01
#define CTRL_B          0x02
#define CTRL_C          0x03
#define CTRL_D          0x04
#define CTRL_E          0x05
#define CTRL_F          0x06
#define CTRL_G          0x07
#define CTRL_H          0x08
#define CTRL_I          0x09
#define CTRL_J          0x0a
#define CTRL_K          0x0b
#define CTRL_L          0x0c
#define CTRL_M          0x0d
#define CTRL_N          0x0e
#define CTRL_O          0x0f
#define CTRL_P          0x10
#define CTRL_Q          0x11
#define CTRL_R          0x12
#define CTRL_S          0x13
#define CTRL_T          0x14
#define CTRL_U          0x15
#define CTRL_V          0x16
#define CTRL_W          0x17
#define CTRL_X          0x18
#define CTRL_Y          0x19
#define CTRL_Z          0x1a

#define BACKSPACE       CTRL_H
#define TAB             CTRL_I
#define LF              CTRL_J
#define CR              CTRL_M
#define ESC             0x1b

/*
 * Special keys outside the normal ASCII range 
 *
 *
 * The names are chosen to match those used by curses.  The values are
 * chosen to facilitate easy conversion from a received ANSI escape
 * sequence to a KEY_XXX constant.
 */

#define KEY_ANSI( n, terminator ) ( 0x100 * ( (n) + 1 ) + (terminator) )

#define KEY_MIN         0x101
#define KEY_UP          KEY_ANSI ( 0, 'A' )     /**< Up arrow */
#define KEY_DOWN        KEY_ANSI ( 0, 'B' )     /**< Down arrow */
#define KEY_RIGHT       KEY_ANSI ( 0, 'C' )     /**< Right arrow */
#define KEY_LEFT        KEY_ANSI ( 0, 'D' )     /**< Left arrow */
#define KEY_END         KEY_ANSI ( 0, 'F' )     /**< End */
#define KEY_HOME        KEY_ANSI ( 0, 'H' )     /**< Home */
#define KEY_IC          KEY_ANSI ( 2, '~' )     /**< Insert */
#define KEY_DC          KEY_ANSI ( 3, '~' )     /**< Delete */
#define KEY_PPAGE       KEY_ANSI ( 5, '~' )     /**< Page up */
#define KEY_NPAGE       KEY_ANSI ( 6, '~' )     /**< Page down */
#define KEY_F8          KEY_ANSI ( 19, '~' )    /**< F8 (for PXE) */

/* Not in the [KEY_MIN,KEY_MAX] range; terminals seem to send these as
 * normal ASCII values.
 */
#define KEY_BACKSPACE   BACKSPACE
#define KEY_ENTER       LF

#endif /* _GPXE_KEYS_H */