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/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Kbd.c,v 3.26 2003/08/24 17:36:53 dawes Exp $ */
/*
 * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, 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 Thomas Roell not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Thomas Roell makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 */
/*
 * Copyright (c) 1992-2003 by The XFree86 Project, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */

/* $XConsortium: xf86Kbd.c /main/10 1996/02/21 17:38:32 kaleb $ */

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#ifdef __UNIXOS2__
#define I_NEED_OS2_H
#endif

#include <X11/X.h>
#include <X11/Xmd.h>
#include "input.h"
#include "scrnintstr.h"

#include "compiler.h"

#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "atKeynames.h"
#include "xf86Config.h"

#include "xf86Keymap.h"

#if defined(KDGKBTYPE) && \
	!defined(Lynx) && \
	!defined(__UNIXOS2__) && !defined(__mips__) && \
	!defined(__arm32__) && !defined(__GNU__) && !defined(__QNX__)
#define HAS_GETKBTYPE
#endif
#if defined(GIO_KEYMAP) && \
	!defined(Lynx) && \
	!defined(__UNIXOS2__) && !defined(__mips__) && \
	!defined(__arm32__) && !defined(__GNU__) && !defined(DGUX) && \
	!defined(__QNX__)
#define HAS_GETKEYMAP

#define KD_GET_ENTRY(i,n) \
  eascii_to_x[((keymap.key[i].spcl << (n+1)) & 0x100) + keymap.key[i].map[n]]

/*
 * NOTE: Not all possible remappable symbols are remapped. There are two main
 *       reasons:
 *                 a) The mapping between scancode and SYSV/386 - symboltable
 *                    is inconsistent between different versions and has some
 *                    BIG mistakes.
 *                 b) In X-Windows there is a difference between numpad-keys
 *                    and normal keys. SYSV/386 uses for both kinds of keys
 *                    the same symbol.
 *
 *       Thus only the alpha keypad and the function keys are translated.
 *       Also CapsLock, NumLock, ScrollLock, Shift, Control & Alt.
 */

static unsigned char remap[128] = {
     0, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,   /* 0x00 - 0x07 */
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,   /* 0x08 - 0x0f */
  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,   /* 0x10 - 0x17 */
  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,   /* 0x18 - 0x1f */
  0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,   /* 0x20 - 0x27 */
  0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,   /* 0x28 - 0x2f */
  0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,    0,   /* 0x30 - 0x37 */
  0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,   /* 0x38 - 0x3f */
  0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,    0,   /* 0x40 - 0x47 */
     0,    0,    0,    0,    0,    0,    0,    0,   /* 0x48 - 0x4f */
     0,    0,    0,    0,    0,    0, 0x56, 0x57,   /* 0x50 - 0x57 */
  0x58,    0,    0,    0,    0,    0,    0,    0,   /* 0x58 - 0x5f */
     0,    0,    0,    0,    0,    0,    0,    0,   /* 0x60 - 0x67 */
     0,    0,    0,    0,    0,    0,    0,    0,   /* 0x68 - 0x6f */
     0,    0, 0x69, 0x65,    0,    0,    0,    0,   /* 0x70 - 0x77 */
     0,    0,    0,    0,    0,    0,    0,    0,   /* 0x78 - 0x7f */
};

static KeySym eascii_to_x[512] = {
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	XK_BackSpace,	XK_Tab,		XK_Linefeed,	NoSymbol,
	NoSymbol,	XK_Return,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	XK_Escape,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	XK_space,	XK_exclam,	XK_quotedbl,	XK_numbersign,
	XK_dollar,	XK_percent,	XK_ampersand,	XK_apostrophe,
	XK_parenleft,	XK_parenright,	XK_asterisk,	XK_plus,
	XK_comma,	XK_minus,	XK_period,	XK_slash,
	XK_0,		XK_1,		XK_2,		XK_3,
	XK_4,		XK_5,		XK_6,		XK_7,
	XK_8,		XK_9,		XK_colon,	XK_semicolon,
	XK_less,	XK_equal,	XK_greater,	XK_question,
	XK_at,		XK_A,		XK_B,		XK_C,
	XK_D,		XK_E,		XK_F,		XK_G,
	XK_H,		XK_I,		XK_J,		XK_K,
	XK_L,		XK_M,		XK_N,		XK_O,
	XK_P,		XK_Q,		XK_R,		XK_S,
	XK_T,		XK_U,		XK_V,		XK_W,
	XK_X,		XK_Y,		XK_Z,		XK_bracketleft,
	XK_backslash,	XK_bracketright,XK_asciicircum,	XK_underscore,
	XK_grave,	XK_a,		XK_b,		XK_c,
	XK_d,		XK_e,		XK_f,		XK_g,
	XK_h,		XK_i,		XK_j,		XK_k,
	XK_l,		XK_m,		XK_n,		XK_o,
	XK_p,		XK_q,		XK_r,		XK_s,
	XK_t,		XK_u,		XK_v,		XK_w,
	XK_x,		XK_y,		XK_z,		XK_braceleft,
	XK_bar,		XK_braceright,	XK_asciitilde,	XK_Delete,
	XK_Ccedilla,	XK_udiaeresis,	XK_eacute,	XK_acircumflex,
	XK_adiaeresis,	XK_agrave,	XK_aring,	XK_ccedilla,
	XK_ecircumflex,	XK_ediaeresis,	XK_egrave,	XK_idiaeresis,
	XK_icircumflex,	XK_igrave,	XK_Adiaeresis,	XK_Aring,
	XK_Eacute,	XK_ae,		XK_AE,		XK_ocircumflex,
	XK_odiaeresis,	XK_ograve,	XK_ucircumflex,	XK_ugrave,
	XK_ydiaeresis,	XK_Odiaeresis,	XK_Udiaeresis,	XK_cent,
	XK_sterling,	XK_yen,		XK_paragraph,	XK_section,
	XK_aacute,	XK_iacute,	XK_oacute,	XK_uacute,
	XK_ntilde,	XK_Ntilde,	XK_ordfeminine,	XK_masculine,
	XK_questiondown,XK_hyphen,	XK_notsign,	XK_onehalf,
	XK_onequarter,	XK_exclamdown,	XK_guillemotleft,XK_guillemotright,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	XK_Greek_alpha,	XK_ssharp,	XK_Greek_GAMMA,	XK_Greek_pi,
	XK_Greek_SIGMA,	XK_Greek_sigma,	XK_mu,	        XK_Greek_tau,
	XK_Greek_PHI,	XK_Greek_THETA,	XK_Greek_OMEGA,	XK_Greek_delta,
	XK_infinity,	XK_Ooblique,	XK_Greek_epsilon, XK_intersection,
	XK_identical,	XK_plusminus,	XK_greaterthanequal, XK_lessthanequal,
	XK_topintegral,	XK_botintegral,	XK_division,	XK_similarequal,
	XK_degree,	NoSymbol,	NoSymbol,	XK_radical,
	XK_Greek_eta,	XK_twosuperior,	XK_periodcentered, NoSymbol,

	/* 
	 * special marked entries (256 + x)
	 */

	NoSymbol,	NoSymbol,	XK_Shift_L,	XK_Shift_R,
	XK_Caps_Lock,	XK_Num_Lock,	XK_Scroll_Lock,	XK_Alt_L,
	NoSymbol,	XK_Control_L,	XK_Alt_L,	XK_Alt_R,
	XK_Control_L,	XK_Control_R,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	XK_F1,
	XK_F2,		XK_F3,		XK_F4,		XK_F5,
	XK_F6,		XK_F7,		XK_F8,		XK_F9,
	XK_F10,		XK_F11,		XK_F12,		NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
      };

#endif /* HAS_GETKEYMAP */

/*
 * LegalModifier --
 *      determine whether a key is a legal modifier key, i.e send a
 *      press/release sequence.
 */

/*ARGSUSED*/
Bool
LegalModifier(key, pDev)
     unsigned int  key;
     DevicePtr	pDev;
{
  return (TRUE);
}


      
/*
 * xf86KbdGetMapping --
 *	Get the national keyboard mapping. The keyboard type is set, a new map
 *      and the modifiermap is computed.
 */

void
xf86KbdGetMapping (pKeySyms, pModMap)
     KeySymsPtr pKeySyms;
     CARD8      *pModMap;
{
  KeySym        *k;
#ifdef HAS_GETKEYMAP
  keymap_t      keymap;
#endif
  int           i;
  KeySym        *pMap;

#ifdef HAS_GETKBTYPE
  char          type;
  
  xf86Info.kbdType =
    ioctl(xf86Info.consoleFd, KDGKBTYPE, &type) != -1 ? type : KB_101;
  if (xf86Info.kbdType == KB_84)
    pMap = map84;
  else
    pMap = map;
#else
/* OS/2 sets the keyboard type during xf86OpenKbd */
#ifndef __UNIXOS2__
  xf86Info.kbdType = 0;
#endif
  pMap = map;
#endif

#ifdef HAS_GETKEYMAP
  /*
   * use the keymap, which can be gotten from our oringinal vt??.
   * ( ttymap(1) !!!! )
   */
  if (ioctl(xf86Info.consoleFd, GIO_KEYMAP, &keymap) != -1) {
    for (i = 0; i < keymap.n_keys && i < NUM_KEYCODES; i++)
      
      if (remap[i]) {
	
	k = pMap + (remap[i] << 2);
	
	k[0] = KD_GET_ENTRY(i,0);             /* non-shifed */
	k[1] = KD_GET_ENTRY(i,1);	      /* shifted */
	k[2] = KD_GET_ENTRY(i,4);	      /* alt */
	k[3] = KD_GET_ENTRY(i,5);	      /* alt - shifted */

	if (k[3] == k[2]) k[3] = NoSymbol;
	if (k[2] == k[1]) k[2] = NoSymbol;
	if (k[1] == k[0]) k[1] = NoSymbol;
	if (k[0] == k[2] && k[1] == k[3]) k[2] = k[3] = NoSymbol;
      }
  }
#endif

  /*
   * compute the modifier map
   */
  for (i = 0; i < MAP_LENGTH; i++)
    pModMap[i] = NoSymbol;  /* make sure it is restored */
  
  for (k = pMap, i = MIN_KEYCODE;
       i < (NUM_KEYCODES + MIN_KEYCODE);
       i++, k += 4)
    
    switch(*k) {
      
    case XK_Shift_L:
    case XK_Shift_R:
      pModMap[i] = ShiftMask;
      break;
      
    case XK_Control_L:
    case XK_Control_R:
      pModMap[i] = ControlMask;
      break;
      
    case XK_Caps_Lock:
      pModMap[i] = LockMask;
      break;
      
    case XK_Alt_L:
    case XK_Alt_R:
      pModMap[i] = AltMask;
      break;
      
    case XK_Num_Lock:
      pModMap[i] = NumLockMask;
      break;

    case XK_Scroll_Lock:
      pModMap[i] = ScrollLockMask;
      break;

      /* kana support */
    case XK_Kana_Lock:
    case XK_Kana_Shift:
      pModMap[i] = KanaMask;
      break;

      /* alternate toggle for multinational support */
    case XK_Mode_switch:
      pModMap[i] = AltLangMask;
      break;

    }
  
  pKeySyms->map        = pMap;
  pKeySyms->mapWidth   = GLYPHS_PER_KEY;
  pKeySyms->minKeyCode = MIN_KEYCODE;
  pKeySyms->maxKeyCode = MAX_KEYCODE;
}