/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * Definitions of various common control characters.
 */

#define CharOrd(x)	((x) < 'a' ? (x) - 'A' : (x) - 'a')
#define CharOrdLow(x)	((x) - 'a')
#define CharOrdUp(x)	((x) - 'A')
#define ROT13(c, a)	(((((c) - (a)) + 13) % 26) + (a))

#define NUL		'\000'
#define BELL		'\007'
#define BS		'\010'
#define TAB		'\011'
#define NL		'\012'
#define NL_STR		(char_u *)"\012"
#define FF		'\014'
#define CAR		'\015'	// CR is used by Mac OS X
#define ESC		'\033'
#define ESC_STR		(char_u *)"\033"
#define ESC_STR_nc	"\033"
#define DEL		0x7f
#define DEL_STR		(char_u *)"\177"

#define POUND		0xA3

#define Ctrl_chr(x)	(TOUPPER_ASC(x) ^ 0x40) // '?' -> DEL, '@' -> ^@, etc.
#define Meta(x)		((x) | 0x80)

#define CTRL_F_STR	"\006"
#define CTRL_H_STR	"\010"
#define CTRL_V_STR	"\026"

#define Ctrl_AT		0   // @
#define Ctrl_A		1
#define Ctrl_B		2
#define Ctrl_C		3
#define Ctrl_D		4
#define Ctrl_E		5
#define Ctrl_F		6
#define Ctrl_G		7
#define Ctrl_H		8
#define Ctrl_I		9
#define Ctrl_J		10
#define Ctrl_K		11
#define Ctrl_L		12
#define Ctrl_M		13
#define Ctrl_N		14
#define Ctrl_O		15
#define Ctrl_P		16
#define Ctrl_Q		17
#define Ctrl_R		18
#define Ctrl_S		19
#define Ctrl_T		20
#define Ctrl_U		21
#define Ctrl_V		22
#define Ctrl_W		23
#define Ctrl_X		24
#define Ctrl_Y		25
#define Ctrl_Z		26
			    // CTRL- [ Left Square Bracket == ESC
#define Ctrl_BSL	28  // \ BackSLash
#define Ctrl_RSB	29  // ] Right Square Bracket
#define Ctrl_HAT	30  // ^
#define Ctrl__		31

#define CSI		0x9b	// Control Sequence Introducer
#define CSI_STR		"\233"
#define DCS		0x90	// Device Control String
#define OSC		0x9d	// Operating System Command
#define STERM		0x9c	// String Terminator

/*
 * Character that separates dir names in a path.
 * For MS-DOS, WIN32 and OS/2 we use a backslash.  A slash mostly works
 * fine, but there are places where it doesn't (e.g. in a command name).
 * For Acorn we use a dot.
 */
#ifdef BACKSLASH_IN_FILENAME
# define PATHSEP	psepc
# define PATHSEPSTR	pseps
#else
# define PATHSEP	'/'
# define PATHSEPSTR	"/"
#endif