/* $Xorg: XKBCompat.c,v 1.3 2000/08/17 19:45:00 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.

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

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

Status
_XkbReadGetCompatMapReply(	Display *		dpy,
				xkbGetCompatMapReply *	rep,
				XkbDescPtr		xkb,
				int	*		nread_rtrn)
{
register int 		i;
XkbReadBufferRec	buf;

    if (!_XkbInitReadBuffer(dpy,&buf,(int)rep->length*4)) 
	return BadAlloc;

    if (nread_rtrn)
	*nread_rtrn= (int)rep->length*4;

    i= rep->firstSI+rep->nSI;
    if ((!xkb->compat)&&
	(XkbAllocCompatMap(xkb,XkbAllCompatMask,i)!=Success))
	return BadAlloc;

    if (rep->nSI!=0) {
	XkbSymInterpretRec *syms;
	xkbSymInterpretWireDesc *wire;

	wire= (xkbSymInterpretWireDesc *)_XkbGetReadBufferPtr(&buf,
				   rep->nSI*SIZEOF(xkbSymInterpretWireDesc));
	if (wire==NULL)
	    goto BAILOUT;
	syms= &xkb->compat->sym_interpret[rep->firstSI];

	for (i=0;i<rep->nSI;i++,syms++,wire++) {
	    syms->sym= wire->sym;
	    syms->mods= wire->mods;
	    syms->match= wire->match;
	    syms->virtual_mod= wire->virtualMod;
	    syms->flags= wire->flags;
	    syms->act= *((XkbAnyAction *)&wire->act);
	}
	xkb->compat->num_si+= rep->nSI;
    }

    if (rep->groups&XkbAllGroupsMask) {
	register unsigned	bit,nGroups;
	xkbModsWireDesc * 	wire;
	for (i=0,nGroups=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
	    if (rep->groups&bit)
		nGroups++;
	}
	wire= (xkbModsWireDesc *)_XkbGetReadBufferPtr(&buf,
				  nGroups*SIZEOF(xkbModsWireDesc));
	if (wire==NULL)
	    goto BAILOUT;
	for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
	    if ((rep->groups&bit)==0)
		continue;
	    xkb->compat->groups[i].mask= wire->mask;
	    xkb->compat->groups[i].real_mods= wire->realMods;
	    xkb->compat->groups[i].vmods= wire->virtualMods;
	    wire++;
	}
    }
    i= _XkbFreeReadBuffer(&buf);
    if (i) 
	fprintf(stderr,"CompatMapReply! Bad length (%d extra bytes)\n",i);
    if (i || buf.error)
	return BadLength;
    return Success;
BAILOUT:
    _XkbFreeReadBuffer(&buf);
    return BadLength;
}

Status
XkbGetCompatMap(Display *dpy,unsigned which,XkbDescPtr xkb)
{
    register xkbGetCompatMapReq *req;
    xkbGetCompatMapReply	 rep;
    Status			status;
    XkbInfoPtr xkbi;

    if ( (!dpy) || (!xkb) || (dpy->flags & XlibDisplayNoXkb) ||
	((xkb->dpy!=NULL)&&(xkb->dpy!=dpy)) ||
	(!dpy->xkb_info && (!XkbUseExtension(dpy,NULL,NULL))))
	return BadAccess;
    LockDisplay(dpy);
    xkbi = dpy->xkb_info;
    GetReq(kbGetCompatMap, req);
    req->reqType = xkbi->codes->major_opcode;
    req->xkbReqType = X_kbGetCompatMap;
    req->deviceSpec = xkb->device_spec;
    if (which&XkbSymInterpMask)
	 req->getAllSI= True;
    else req->getAllSI= False;
    req->firstSI= req->nSI= 0;

    if (which&XkbGroupCompatMask)
	 req->groups= XkbAllGroupsMask;
    else req->groups=  0;

    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
	UnlockDisplay(dpy);
	SyncHandle();
	return BadLength;
    }
    if (xkb->dpy==NULL)
	xkb->dpy= dpy;
    if (xkb->device_spec==XkbUseCoreKbd)
	xkb->device_spec= rep.deviceID;

    status = _XkbReadGetCompatMapReply(dpy,&rep,xkb,NULL);
    UnlockDisplay(dpy);
    SyncHandle();
    return status;
}

static Bool
_XkbWriteSetCompatMap(Display *dpy,xkbSetCompatMapReq *req,XkbDescPtr xkb)
{
CARD16			firstSI;
CARD16			nSI;
int			size;
register int 		i,nGroups;
register unsigned	bit;
unsigned		groups;
char *			buf;

    firstSI = req->firstSI;
    nSI = req->nSI;
    size= nSI*SIZEOF(xkbSymInterpretWireDesc);
    nGroups= 0;
    groups= req->groups;
    if (groups&XkbAllGroupsMask) {
	for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
	    if (groups&bit)
		nGroups++;
	}
	size+= SIZEOF(xkbModsWireDesc)*nGroups;
    }
    req->length+= size/4;
    BufAlloc(char *,buf,size);
    if (!buf)
	return False;

    if (nSI) {
	XkbSymInterpretPtr sym= &xkb->compat->sym_interpret[firstSI];
	xkbSymInterpretWireDesc *wire= (xkbSymInterpretWireDesc *)buf;
	for (i=0;i<nSI;i++,wire++,sym++) {
	    wire->sym= (CARD32)sym->sym;
	    wire->mods= sym->mods;
	    wire->match= sym->match;
	    wire->flags= sym->flags;
	    wire->virtualMod= sym->virtual_mod;
	    memcpy(&wire->act,&sym->act,sz_xkbActionWireDesc);
	}
	buf+= nSI*SIZEOF(xkbSymInterpretWireDesc);
    }
    if (groups&XkbAllGroupsMask) {
	xkbModsWireDesc *	out;

	out= (xkbModsWireDesc *)buf;
	for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
	    if ((groups&bit)!=0) {
		out->mask= xkb->compat->groups[i].mask;
		out->realMods= xkb->compat->groups[i].real_mods;
		out->virtualMods=  xkb->compat->groups[i].vmods;
		out++;
	    }
	}
	buf+= nGroups*SIZEOF(xkbModsWireDesc);
    }
    return True;
}

Bool
XkbSetCompatMap(Display *dpy,unsigned which,XkbDescPtr xkb,Bool updateActions)
{
    register xkbSetCompatMapReq *req;
    Status		     ok;
    XkbInfoPtr xkbi;

    if ((dpy->flags & XlibDisplayNoXkb) || (dpy!=xkb->dpy) ||
	(!dpy->xkb_info && !XkbUseExtension(dpy,NULL,NULL)))
	return False;
    if ((!xkb->compat) ||
	((which&XkbSymInterpMask)&&(!xkb->compat->sym_interpret)))
	return False;
    LockDisplay(dpy);
    xkbi = dpy->xkb_info;
    GetReq(kbSetCompatMap, req);
    req->reqType = xkbi->codes->major_opcode;
    req->xkbReqType = X_kbSetCompatMap;
    req->deviceSpec = xkb->device_spec;
    req->recomputeActions = updateActions;
    if (which&XkbSymInterpMask) {
	req->truncateSI = True;
	req->firstSI= 0;
	req->nSI= xkb->compat->num_si;
    }
    else {
	req->truncateSI = False;
	req->firstSI= 0;
	req->nSI= 0;
    }
    if (which&XkbGroupCompatMask)
	 req->groups= XkbAllGroupsMask;
    else req->groups=  0;
    ok= _XkbWriteSetCompatMap(dpy,req,xkb);
    UnlockDisplay(dpy);
    SyncHandle();
    return ok;
}

