/*
Copyright 2000 Compaq Computer Corporation

COMPAQ Registered in U.S. Patent and Trademark Office.

Confidential computer software.  Valid license from Compaq required for
possession, use or copying.  Consistent with FAR 12.211 and 12.212, Commercial
Computer Software, Computer Software Documentation, and Technical Data for
Commercial Items are licensed to the U.S. Government under vendor's standard
commercial license.
*/
/*
 * xmodmap - program for loading keymap definitions into server
 *
 * $XConsortium: wq.h,v 1.4 88/10/08 15:41:34 jim Exp $
 *
 * Copyright 1988 Massachusetts Institute of Technology
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of M.I.T. not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  M.I.T. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * Author:  Jim Fulton, MIT X Consortium
 */


/* 
 * Input is parsed and a work queue is built that is executed later.  This
 * allows us to swap keys as well as ensure that we don't mess up the keyboard
 * by doing a partial rebind.
 */

enum opcode { doKeycode, doAddModifier, doRemoveModifier, doClearModifier,
	      doPointer };

struct op_generic {
    enum opcode type;			/* oneof enum opcode */
    union op *next;			/* next element in list or NULL */
};


/*
 * keycode KEYCODE = KEYSYM
 * keysym OLDKEYSYM = NEWKEYSYM
 *
 * want to eval the OLDKEYSYM before executing the work list so that it isn't
 * effected by any assignments.
 */

struct op_keycode {
    enum opcode type;			/* doKeycode */
    union op *next;			/* next element in list or NULL */
    KeyCode target_keycode;		/* key to which we are assigning */
    int count;				/* number of new keysyms */
    KeySym *keysyms;			/* new values to insert */
};


/*
 * add MODIFIER = KEYSYM ...
 */

struct op_addmodifier {
    enum opcode type;			/* doAddModifier */
    union op *next;			/* next element in list or NULL */
    int modifier;			/* index into modifier list */
    int count;				/* number of keysyms */
    KeySym *keysyms;			/* new values to insert */
};


/*
 * remove MODIFIER = OLDKEYSYM ...
 *
 * want to eval the OLDKEYSYM before executing the work list so that it isn't
 * effected by any assignments.
 */

struct op_removemodifier {
    enum opcode type;			/* doRemoveModifier */
    union op *next;			/* next element in list or NULL */
    int modifier;			/* index into modifier list */
    int count;				/* number of keysyms */
    KeyCode *keycodes;			/* old values to remove */
};


/*
 * clear MODIFIER
 */

struct op_clearmodifier {
    enum opcode type;			/* doClearModifier */
    union op *next;			/* next element in list or NULL */
    int modifier;			/* index into modifier list */
};

/*
 * pointer = NUMBER ...
 *
 * set pointer map to the positive numbers given on the right hand side
 */

#define MAXBUTTONCODES 256		/* there are eight bits of buttons */

struct op_pointer {
    enum opcode type;			/* doPointer */
    union op *next;			/* next element in list or NULL */
    int count;				/* number of new button codes */
    unsigned char button_codes[MAXBUTTONCODES];
};


/*
 * all together now
 */
union op {
    struct op_generic generic;
    struct op_keycode keycode;
    struct op_addmodifier addmodifier;
    struct op_removemodifier removemodifier;
    struct op_clearmodifier clearmodifier;
    struct op_pointer pointer;
};

extern struct wq {
    union op *head;
    union op *tail;
} work_queue;


extern struct modtab {
    char *name;
    int length;
    int value;
} modifier_table[];

#define AllocStruct(s) ((s *) malloc (sizeof (s)))

#define MAXKEYSYMNAMESIZE 80		/* absurdly large */