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Key definitions
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src/include/gpxe/keys.h
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src/include/gpxe/keys.h
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#ifndef _GPXE_KEYS_H
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#define _GPXE_KEYS_H
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/** @file
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*
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* Key definitions
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*
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*/
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/*
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* Symbolic names for some standard ASCII characters
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*
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*/
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#define NUL 0x00
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#define CTRL_A 0x01
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#define CTRL_B 0x02
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#define CTRL_C 0x03
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#define CTRL_D 0x04
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#define CTRL_E 0x05
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#define CTRL_F 0x06
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#define CTRL_G 0x07
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#define CTRL_H 0x08
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#define CTRL_I 0x09
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#define CTRL_J 0x0a
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#define CTRL_K 0x0b
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#define CTRL_L 0x0c
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#define CTRL_M 0x0d
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#define CTRL_N 0x0e
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#define CTRL_O 0x0f
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#define CTRL_P 0x10
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#define CTRL_Q 0x11
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#define CTRL_R 0x12
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#define CTRL_S 0x13
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#define CTRL_T 0x14
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#define CTRL_U 0x15
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#define CTRL_V 0x16
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#define CTRL_W 0x17
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#define CTRL_X 0x18
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#define CTRL_Y 0x19
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#define CTRL_Z 0x1a
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#define BACKSPACE CTRL_H
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#define TAB CTRL_I
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#define ENTER CTRL_M
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#define ESC 0x1b
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/*
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* Special keys outside the normal ASCII range
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*
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*
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* These values are chosen to facilitate easy conversion from a
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* received ANSI escape sequence to a KEY_XXX constant. The KEY_XXX
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* constant is simply 0x100 plus the first byte following CSI in the
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* ANSI escape sequence. For example, KEY_LEFT is 0x144, since a left
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* cursor key is transmitted as the ANSI sequence "^[[D".
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*/
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#define KEY_ANSI( character ) ( 0x100 + (character) )
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#define KEY_MIN 0x101
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#define KEY_UP KEY_ANSI ( 'A' )
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#define KEY_DOWN KEY_ANSI ( 'B' )
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#define KEY_RIGHT KEY_ANSI ( 'C' )
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#define KEY_LEFT KEY_ANSI ( 'D' )
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#define KEY_END KEY_ANSI ( 'E' )
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#define KEY_HOME KEY_ANSI ( 'H' )
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#define KEY_PPAGE KEY_ANSI ( '5' )
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#define KEY_NPAGE KEY_ANSI ( '6' )
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#define KEY_MAX 0x1ff
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/* Not in the [KEY_MIN,KEY_MAX] range; terminals seem to send these as
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* normal ASCII values.
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*/
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#define KEY_BACKSPACE BACKSPACE
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#define KEY_ENTER ENTER
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#endif /* _GPXE_KEYS_H */
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