XKBGetByName.c

/* $Xorg: XKBGetByName.c,v 1.3 2000/08/17 19:45:02 cpqbld Exp $ */
/************************************************************
Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.

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 Silicon Graphics not be 
used in advertising or publicity pertaining to distribution 
of the software without specific prior written permission.
Silicon Graphics makes no representation about the suitability 
of this software for any purpose. It is provided "as is"
without any express or implied warranty.

SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
GRAPHICS 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.

********************************************************/
/* $XFree86$ */

#define NEED_REPLIES
#define NEED_EVENTS
#define	NEED_MAP_READERS
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "Xlibint.h"
#include <nx-X11/extensions/XKBproto.h>
#include "XKBlibint.h"

/***====================================================================***/

XkbDescPtr
XkbGetKeyboardByName(	Display *		dpy,
			unsigned		deviceSpec,
			XkbComponentNamesPtr	names,
			unsigned		want,
			unsigned		need,
			Bool			load)
{
    register xkbGetKbdByNameReq	*	req;
    xkbGetKbdByNameReply 		rep;
    int					len,extraLen;
    char *				str;
    XkbDescPtr				xkb;
    int					mapLen,codesLen,typesLen,compatLen;
    int					symsLen,geomLen;
    XkbInfoPtr 				xkbi;

    if ( (dpy==NULL) || (dpy->flags & XlibDisplayNoXkb) ||
	(!dpy->xkb_info && !XkbUseExtension(dpy,NULL,NULL)) )
	return NULL;

    xkbi= dpy->xkb_info;
    xkb = (XkbDescRec *)_XkbCalloc(1,sizeof(XkbDescRec));
    if (!xkb)
	return NULL;
    xkb->device_spec = deviceSpec;
    xkb->map = (XkbClientMapRec *)_XkbCalloc(1,sizeof(XkbClientMapRec));
    xkb->dpy = dpy;

    LockDisplay(dpy);
    GetReq(kbGetKbdByName, req);
    req->reqType = xkbi->codes->major_opcode;
    req->xkbReqType = X_kbGetKbdByName;
    req->deviceSpec = xkb->device_spec;
    req->want= want;
    req->need= need;
    req->load= load;

    mapLen= codesLen= typesLen= compatLen= symsLen= geomLen= 0;
    if (names) {
	if (names->keymap)
	    mapLen= (int)strlen(names->keymap);
	if (names->keycodes)
	    codesLen= (int)strlen(names->keycodes);
	if (names->types)
	    typesLen= (int)strlen(names->types);
	if (names->compat)
	    compatLen= (int)strlen(names->compat);
	if (names->symbols)
	    symsLen= (int)strlen(names->symbols);
	if (names->geometry)
	    geomLen= (int)strlen(names->geometry);
	if (mapLen>255)		mapLen= 255;
	if (codesLen>255)	codesLen= 255;
	if (typesLen>255)	typesLen= 255;
	if (compatLen>255)	compatLen= 255;
	if (symsLen>255)	symsLen= 255;
	if (geomLen>255)	geomLen= 255;
    }
    else mapLen= codesLen= typesLen= compatLen= symsLen= geomLen= 0;

    len= mapLen+codesLen+typesLen+compatLen+symsLen+geomLen+6;
    len= XkbPaddedSize(len);
    req->length+= len/4;
    BufAlloc(char *,str,len);
    *str++= mapLen;
    if (mapLen>0) {
	 memcpy(str,names->keymap,mapLen);
	 str+= mapLen;
    }
    *str++= codesLen;
    if (codesLen>0) {
	 memcpy(str,names->keycodes,codesLen);
	 str+= codesLen;
    }
    *str++= typesLen;
    if (typesLen>0) {
	 memcpy(str,names->types,typesLen);
	 str+= typesLen;
    }
    *str++= compatLen;
    if (compatLen>0) {
	 memcpy(str,names->compat,compatLen);
	 str+= compatLen;
    }
    *str++= symsLen;
    if (symsLen>0) {
	 memcpy(str,names->symbols,symsLen);
	 str+= symsLen;
    }
    *str++= geomLen;
    if (geomLen>0) {
	 memcpy(str,names->geometry,geomLen);
	 str+= geomLen;
    }
    if ((!_XReply(dpy, (xReply *)&rep, 0, xFalse))||(!rep.reported))
	goto BAILOUT;
    extraLen= (int)rep.length*4;

    xkb->device_spec= rep.deviceID;
    xkb->min_key_code = rep.minKeyCode;
    xkb->max_key_code = rep.maxKeyCode;
    if (rep.reported&(XkbGBN_SymbolsMask|XkbGBN_TypesMask)) {
	xkbGetMapReply 	mrep;
	Status		status;
	int		nread= 0;

	_XRead(dpy, (char *)&mrep, SIZEOF(xkbGetMapReply));
	extraLen-= SIZEOF(xkbGetMapReply);
	status= _XkbReadGetMapReply(dpy,&mrep,xkb,&nread);
	extraLen-= nread;
	if (status!=Success)
	    goto BAILOUT;
    }
    if (rep.reported&XkbGBN_CompatMapMask) {
	xkbGetCompatMapReply 	crep;
	Status			status;
	int			nread= 0;

	_XRead(dpy, (char *)&crep, SIZEOF(xkbGetCompatMapReply));
	extraLen-= SIZEOF(xkbGetCompatMapReply);
	status= _XkbReadGetCompatMapReply(dpy,&crep,xkb,&nread);
	extraLen-= nread;
	if (status!=Success)
	    goto BAILOUT;
    }
    if (rep.reported&XkbGBN_IndicatorMapMask) {
	xkbGetIndicatorMapReply irep;
	Status			status;
	int			nread= 0;

	_XRead(dpy, (char *)&irep, SIZEOF(xkbGetIndicatorMapReply));
	extraLen-= SIZEOF(xkbGetIndicatorMapReply);
	status= _XkbReadGetIndicatorMapReply(dpy,&irep,xkb,&nread);
	extraLen-= nread;
	if (status!=Success)
	    goto BAILOUT;
    }
    if (rep.reported&(XkbGBN_KeyNamesMask|XkbGBN_OtherNamesMask)) {
	xkbGetNamesReply	nrep;
	Status			status;
	int			nread= 0;

	_XRead(dpy, (char *)&nrep, SIZEOF(xkbGetNamesReply));
	extraLen-= SIZEOF(xkbGetNamesReply);
	status= _XkbReadGetNamesReply(dpy,&nrep,xkb,&nread);
	extraLen-= nread;
	if (status!=Success)
	    goto BAILOUT;
    }
    if (rep.reported&XkbGBN_GeometryMask) {
	xkbGetGeometryReply	grep;
	Status			status;
	int			nread= 0;

	_XRead(dpy, (char *)&grep, SIZEOF(xkbGetGeometryReply));
	extraLen-= SIZEOF(xkbGetGeometryReply);
	status= _XkbReadGetGeometryReply(dpy,&grep,xkb,&nread);
	extraLen-= nread;
	if (status!=Success)
	    goto BAILOUT;
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return xkb;
BAILOUT:
    if (xkb!=NULL)
	XkbFreeKeyboard(xkb,XkbAllComponentsMask,xTrue);
    UnlockDisplay(dpy);
    SyncHandle();
    return NULL;
}

XkbDescPtr
XkbGetKeyboard(Display *dpy,unsigned which,unsigned deviceSpec)
{
    return XkbGetKeyboardByName(dpy,deviceSpec,NULL,which,which,False);
}