/* $XConsortium: Lookup.c,v 1.14 94/04/17 20:16:10 rws Exp $ */

/* 
 
Copyright (c) 1988, 1989  X Consortium

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
X CONSORTIUM 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 X Consortium 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 X Consortium.

*/

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#define XK_LATIN1
#define XK_PUBLISHING
#include <X11/keysymdef.h>

#if __STDC__
#define Const const
#else
#define Const /**/
#endif

/* bit (1<<i) means character is in codeset i */
static unsigned short Const latin1[128] =
  {0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x10ee, 0x0000, 0x1000, 0x1084, 0x102e, 0x1000, 0x1080, 0x108e, /* 10 */
   0x108e, 0x1080, 0x0000, 0x1080, 0x1080, 0x10ee, 0x1000, 0x1008,
   0x108e, 0x1080, 0x1084, 0x1084, 0x108e, 0x1004, 0x1000, 0x1084, /* 11 */
   0x100e, 0x1000, 0x0000, 0x1080, 0x1000, 0x1084, 0x1000, 0x0000,
   0x0004, 0x000e, 0x000e, 0x0008, 0x000e, 0x0008, 0x0008, 0x0006, /* 12 */
   0x0004, 0x000e, 0x0004, 0x000e, 0x0004, 0x000e, 0x000e, 0x0004,
   0x0000, 0x0004, 0x0004, 0x0006, 0x000e, 0x0008, 0x000e, 0x000e, /* 13 */
   0x0008, 0x0004, 0x000e, 0x000c, 0x000e, 0x0002, 0x0000, 0x000e,
   0x0004, 0x000e, 0x000e, 0x0008, 0x000e, 0x0008, 0x0008, 0x0006, /* 14 */
   0x0004, 0x000e, 0x0004, 0x000e, 0x0004, 0x000e, 0x000e, 0x0004,
   0x0000, 0x0004, 0x0004, 0x0006, 0x000e, 0x0008, 0x000e, 0x000e, /* 15 */
   0x0008, 0x0004, 0x000e, 0x000c, 0x000e, 0x0002, 0x0000, 0x0000};

/* bit (1<<i) means character is in codeset i */
static unsigned short Const latin2[128] =
  {0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0008, 0x0004, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 10 */
   0x0000, 0x0008, 0x0004, 0x0000, 0x0000, 0x0000, 0x0008, 0x0004,
   0x0000, 0x0008, 0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0008, /* 11 */
   0x0000, 0x0008, 0x0004, 0x0000, 0x0000, 0x0000, 0x0008, 0x0004,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
   0x0008, 0x0000, 0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 13 */
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 14 */
   0x0008, 0x0000, 0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
   0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 15 */
   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x000c};

/* maps Cyrillic keysyms to 8859-5 */
static unsigned char Const cyrillic[128] =
   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0xf2, 0xf3, 0xf1, 0xf4, 0xf5, 0xf6, 0xf7, /* 10 */
    0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0x00, 0xfe, 0xff,
    0xf0, 0xa2, 0xa3, 0xa1, 0xa4, 0xa5, 0xa6, 0xa7, /* 11 */
    0xa8, 0xa9, 0xaa, 0xab, 0xac, 0x00, 0xae, 0xaf,
    0xee, 0xd0, 0xd1, 0xe6, 0xd4, 0xd5, 0xe4, 0xd3, /* 12 */
    0xe5, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
    0xdf, 0xef, 0xe0, 0xe1, 0xe2, 0xe3, 0xd6, 0xd2, /* 13 */
    0xec, 0xeb, 0xd7, 0xe8, 0xed, 0xe9, 0xe7, 0xea,
    0xce, 0xb0, 0xb1, 0xc6, 0xb4, 0xb5, 0xc4, 0xb3, /* 14 */
    0xc5, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe,
    0xbf, 0xcf, 0xc0, 0xc1, 0xc2, 0xc3, 0xb6, 0xb2, /* 15 */
    0xcc, 0xcb, 0xb7, 0xc8, 0xcd, 0xc9, 0xc7, 0xca};

/* maps Greek keysyms to 8859-7 */
static unsigned char Const greek[128] =
   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0xb6, 0xb8, 0xb9, 0xba, 0xda, 0x00, 0xbc, /* 10 */
    0xbe, 0xdb, 0x00, 0xbf, 0x00, 0x00, 0xb5, 0xaf,
    0x00, 0xdc, 0xdd, 0xde, 0xdf, 0xfa, 0xc0, 0xfc, /* 11 */
    0xfd, 0xfb, 0xe0, 0xfe, 0x00, 0x00, 0x00, 0x00,
    0x00, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 12 */
    0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
    0xd0, 0xd1, 0xd3, 0x00, 0xd4, 0xd5, 0xd6, 0xd7, /* 13 */
    0xd8, 0xd9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 14 */
    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
    0xf0, 0xf1, 0xf3, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7, /* 15 */
    0xf8, 0xf9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

#define sLatin1		(unsigned long)0
#define sLatin2		(unsigned long)1
#define sLatin3		(unsigned long)2
#define sLatin4		(unsigned long)3
#define sKana		(unsigned long)4
#define sX0201		(unsigned long)0x01000004
#define sArabic		(unsigned long)5
#define sCyrillic	(unsigned long)6
#define sGreek		(unsigned long)7
#define sAPL		(unsigned long)11
#define sHebrew		(unsigned long)12

int XmuLookupString (event, buffer, nbytes, keysym, status, keysymSet)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
    unsigned long keysymSet;
{
    int count;
    KeySym symbol;
    unsigned long kset;

    kset = keysymSet & 0xffffff;
    count = XLookupString(event, buffer, nbytes, &symbol, status);
    if (keysym) *keysym = symbol;
    if ((nbytes == 0) || (symbol == NoSymbol)) {
	/* nothing */
    } else if ((count == 0) && ((symbol >> 8) == kset)) {
	count = 1;
	switch (keysymSet) {
	case sKana:
	    buffer[0] = (symbol & 0xff);
	    if (buffer[0] == 0x7e)
		count = 0;
	    break;
	case sCyrillic:
	    buffer[0] = cyrillic[symbol & 0x7f];
	    break;
	case sGreek:
	    buffer[0] = greek[symbol & 0x7f];
	    if (!buffer[0])
		count = 0;
	    break;
	default:
	    buffer[0] = (symbol & 0xff);
	    break;
	}
    } else if ((keysymSet != 0) && (count == 1) &&
	       (((unsigned char *)buffer)[0] == symbol) &&
	       (symbol & 0x80) &&
	       !(latin1[symbol & 0x7f] & (1 << kset))) {
	if ((keysymSet == sHebrew) && (symbol == XK_multiply))
	    buffer[0] = 0xaa;
	else if ((keysymSet == sHebrew) && (symbol == XK_division))
	    buffer[0] = 0xba;
	else if ((keysymSet == sCyrillic) && (symbol == XK_section))
	    buffer[0] = 0xfd;
	else if ((keysymSet == sX0201) && (symbol == XK_yen))
	    buffer[0] = 0x5c;
	else
	    count = 0;
    } else if (count != 0) {
	if ((keysymSet == sX0201) &&
	    ((symbol == XK_backslash) || (symbol == XK_asciitilde)))
	    count = 0;
    } else if (((symbol >> 8) == sLatin2) &&
	       (symbol & 0x80) && (latin2[symbol & 0x7f] & (1 << kset))) {
	buffer[0] = (symbol & 0xff);
	count = 1;
    } else if ((keysymSet == sGreek) &&
	       ((symbol == XK_leftsinglequotemark) ||
		(symbol == XK_rightsinglequotemark))) {
	buffer[0] = symbol - (XK_leftsinglequotemark - 0xa1);
	count = 1;
    }
    return count;
}

/* produces ISO 8859-1 encoding plus ASCII control */
int XmuLookupLatin1 (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XLookupString(event, buffer, nbytes, keysym, status);
}

/* produces ISO 8859-2 encoding plus ASCII control */
int XmuLookupLatin2 (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sLatin2);
}

/* produces ISO 8859-3 encoding plus ASCII control */
int XmuLookupLatin3 (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sLatin3);
}

/* produces ISO 8859-4 encoding plus ASCII control */
int XmuLookupLatin4 (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sLatin4);
}

/* produces ISO 8859-1 GL plus Katakana plus ASCII control */
int XmuLookupKana (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sKana);
}

/* produces JIS X0201-1976 (8-bit) */
int XmuLookupJISX0201 (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sX0201);
}

/* produces ISO 8859-6 encoding plus ASCII control */
int XmuLookupArabic (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sArabic);
}

/* produces ISO/IEC 8859-5 encoding plus ASCII control */
int XmuLookupCyrillic (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sCyrillic);
}

/* produces ISO 8859-7 encoding plus ASCII control */
int XmuLookupGreek (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sGreek);
}

/* XXX this character set needs work */

int XmuLookupAPL (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sAPL);
}

/* produces ISO 8859-8 encoding plus ASCII control */
int XmuLookupHebrew (event, buffer, nbytes, keysym, status)
    register XKeyEvent *event;
    char *buffer;
    int nbytes;
    KeySym *keysym;
    XComposeStatus *status;
{
    return XmuLookupString(event, buffer, nbytes, keysym, status, sHebrew);
}
