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path: root/xkb/XKBGAlloc.c
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/* $Xorg: XKBGAlloc.c,v 1.3 2000/08/17 19:45:01 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: xc/lib/X11/XKBGAlloc.c,v 3.5 2003/11/17 22:20:09 dawes Exp $ */

#define	NEED_EVENTS
#define	NEED_REPLIES

#ifndef XKB_IN_SERVER

#include <stdio.h>
#include "Xlibint.h"
#include "XKBlibint.h"
#include <X11/extensions/XKBgeom.h>
#include <X11/extensions/XKBproto.h>

#else 

#include <stdio.h>
#include "X.h"
#include "Xproto.h"
#include "misc.h"
#include "inputstr.h"
#include "XKBsrv.h"
#include "XKBgeom.h"

#endif /* XKB_IN_SERVER */

#ifdef X_NOT_POSIX
#define Size_t unsigned int
#else
#define Size_t size_t
#endif

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

static void 
_XkbFreeGeomLeafElems(	Bool			freeAll,
			int			first,
			int 			count,
			unsigned short *	num_inout,
			unsigned short *	sz_inout,
			char **			elems,
			unsigned int		elem_sz)
{
    if ((freeAll)||(*elems==NULL)) {
	*num_inout= *sz_inout= 0;
	if (*elems!=NULL) {
	    _XkbFree(*elems);
	    *elems= NULL;
	}	
	return;
    }

    if ((first>=(*num_inout))||(first<0)||(count<1))
	return;

    if (first+count>=(*num_inout)) { 
	/* truncating the array is easy */
	(*num_inout)= first;
    }
    else {
	char *	ptr;
	int 	extra;
	ptr= *elems;
	extra= ((*num_inout)-(first+count))*elem_sz;
	if (extra>0)
	    memmove(&ptr[first*elem_sz],&ptr[(first+count)*elem_sz],extra);
	(*num_inout)-= count;
    }
    return;
}

typedef void (*ContentsClearFunc)(
		char *		/* priv */
);

static void 
_XkbFreeGeomNonLeafElems(	Bool			freeAll,
				int			first,
				int 			count,
				unsigned short *	num_inout,
				unsigned short *	sz_inout,
				char **			elems,
				unsigned int		elem_sz,
				ContentsClearFunc	freeFunc)
{
register int i;
register char *ptr;

    if (freeAll) {
	first= 0;
	count= (*num_inout);
    }
    else if ((first>=(*num_inout))||(first<0)||(count<1))
	return;
    else if (first+count>(*num_inout))
	count= (*num_inout)-first;
    if (*elems==NULL)
	return;

    if (freeFunc) {
	ptr= *elems;
	ptr+= first*elem_sz;
	for (i=0;i<count;i++) {
	    (*freeFunc)(ptr);
	    ptr+= elem_sz;
	}
    }
    if (freeAll) {
	(*num_inout)= (*sz_inout)= 0;
	if (*elems) {
	    _XkbFree(*elems);
	    *elems= NULL;
	}
    }
    else if (first+count>=(*num_inout))
	*num_inout= first;
    else {
	i= ((*num_inout)-(first+count))*elem_sz;
	ptr= *elems;
	memmove(&ptr[first*elem_sz],&ptr[(first+count)*elem_sz],i);
	(*num_inout)-= count;
    }
    return;
}

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

static void
_XkbClearProperty(char *prop_in)
{
XkbPropertyPtr	prop= (XkbPropertyPtr)prop_in;

    if (prop->name) {
	_XkbFree(prop->name);
	prop->name= NULL;
    }
    if (prop->value) {
	_XkbFree(prop->value);
	prop->value= NULL;
    }
    return;
}

void
XkbFreeGeomProperties(	XkbGeometryPtr	geom,
			int		first,
			int		count,
			Bool		freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&geom->num_properties,&geom->sz_properties,
				(char **)&geom->properties,
				sizeof(XkbPropertyRec),_XkbClearProperty);
    return;
}

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

void
XkbFreeGeomKeyAliases(	XkbGeometryPtr	geom,
			int		first,
			int		count,
			Bool		freeAll)
{	
    _XkbFreeGeomLeafElems(freeAll,first,count,
				&geom->num_key_aliases,&geom->sz_key_aliases,
				(char **)&geom->key_aliases,
				sizeof(XkbKeyAliasRec));
    return;
}

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

static void
_XkbClearColor(char *color_in)
{
XkbColorPtr	color= (XkbColorPtr)color_in;

    if (color->spec)
	_XkbFree(color->spec);
    return;
}

void
XkbFreeGeomColors(XkbGeometryPtr geom,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&geom->num_colors,&geom->sz_colors,
				(char **)&geom->colors,
				sizeof(XkbColorRec),_XkbClearColor);
    return;
}

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

void
XkbFreeGeomPoints(XkbOutlinePtr outline,int first,int count,Bool freeAll)
{
    _XkbFreeGeomLeafElems(freeAll,first,count,
				&outline->num_points,&outline->sz_points,
				(char **)&outline->points,
				sizeof(XkbPointRec));
    return;
}

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

static void
_XkbClearOutline(char *outline_in)
{
XkbOutlinePtr	outline= (XkbOutlinePtr)outline_in;

    if (outline->points!=NULL)
	XkbFreeGeomPoints(outline,0,outline->num_points,True);
    return;
}

void
XkbFreeGeomOutlines(XkbShapePtr	shape,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&shape->num_outlines,&shape->sz_outlines,
				(char **)&shape->outlines,
				sizeof(XkbOutlineRec),_XkbClearOutline);
	
    return;
}

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

static void
_XkbClearShape(char *shape_in)
{
XkbShapePtr	shape= (XkbShapePtr)shape_in;

    if (shape->outlines)
	XkbFreeGeomOutlines(shape,0,shape->num_outlines,True);
    return;
}

void
XkbFreeGeomShapes(XkbGeometryPtr geom,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&geom->num_shapes,&geom->sz_shapes,
				(char **)&geom->shapes,
				sizeof(XkbShapeRec),_XkbClearShape);
    return;
}

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

void 
XkbFreeGeomOverlayKeys(XkbOverlayRowPtr row,int first,int count,Bool freeAll)
{
    _XkbFreeGeomLeafElems(freeAll,first,count,
				&row->num_keys,&row->sz_keys,
				(char **)&row->keys,
				sizeof(XkbOverlayKeyRec));
    return;
}

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

static void
_XkbClearOverlayRow(char *row_in)
{
XkbOverlayRowPtr	row= (XkbOverlayRowPtr)row_in;

    if (row->keys!=NULL)
	XkbFreeGeomOverlayKeys(row,0,row->num_keys,True);
    return;
}

void
XkbFreeGeomOverlayRows(XkbOverlayPtr overlay,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&overlay->num_rows,&overlay->sz_rows,
				(char **)&overlay->rows,
				sizeof(XkbOverlayRowRec),_XkbClearOverlayRow);
    return;
}

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

static void
_XkbClearOverlay(char *overlay_in)
{
XkbOverlayPtr	overlay= (XkbOverlayPtr)overlay_in;

    if (overlay->rows!=NULL)
	XkbFreeGeomOverlayRows(overlay,0,overlay->num_rows,True);
    return;
}

void
XkbFreeGeomOverlays(XkbSectionPtr section,int first,int	count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&section->num_overlays,&section->sz_overlays,
				(char **)&section->overlays,
				sizeof(XkbOverlayRec),_XkbClearOverlay);
    return;
}

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

void
XkbFreeGeomKeys(XkbRowPtr row,int first,int count,Bool freeAll)
{
    _XkbFreeGeomLeafElems(freeAll,first,count,
				&row->num_keys,&row->sz_keys,
				(char **)&row->keys,
				sizeof(XkbKeyRec));
    return;
}

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

static void
_XkbClearRow(char *row_in)
{
XkbRowPtr	row= (XkbRowPtr)row_in;

    if (row->keys!=NULL)
	XkbFreeGeomKeys(row,0,row->num_keys,True);
    return;
}

void
XkbFreeGeomRows(XkbSectionPtr section,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&section->num_rows,&section->sz_rows,
				(char **)&section->rows,
				sizeof(XkbRowRec),_XkbClearRow);
}

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

static void
_XkbClearSection(char *section_in)
{
XkbSectionPtr	section= (XkbSectionPtr)section_in;

    if (section->rows!=NULL)
	XkbFreeGeomRows(section,0,section->num_rows,True);
    if (section->doodads!=NULL) {
	XkbFreeGeomDoodads(section->doodads,section->num_doodads,True);
	section->doodads= NULL;
    }
    return;
}

void
XkbFreeGeomSections(XkbGeometryPtr geom,int first,int count,Bool freeAll)
{
    _XkbFreeGeomNonLeafElems(freeAll,first,count,
				&geom->num_sections,&geom->sz_sections,
				(char **)&geom->sections,
				sizeof(XkbSectionRec),_XkbClearSection);
    return;
}

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

static void
_XkbClearDoodad(char *doodad_in)
{
XkbDoodadPtr	doodad= (XkbDoodadPtr)doodad_in;

    switch (doodad->any.type) {
   	case XkbTextDoodad: 
	    {
		if (doodad->text.text!=NULL) {
		    _XkbFree(doodad->text.text);
		    doodad->text.text= NULL;
		}
		if (doodad->text.font!=NULL) {
		    _XkbFree(doodad->text.font);
		    doodad->text.font= NULL;
		}
	    }
	    break;
   	case XkbLogoDoodad: 
	    {
		if (doodad->logo.logo_name!=NULL) {
		    _XkbFree(doodad->logo.logo_name);
		    doodad->logo.logo_name= NULL;
		}
	    }
	    break;
    }
    return;
}

void
XkbFreeGeomDoodads(XkbDoodadPtr doodads,int nDoodads,Bool freeAll)
{
register int 		i;
register XkbDoodadPtr	doodad;

    if (doodads) {
	for (i=0,doodad= doodads;i<nDoodads;i++,doodad++) {
	    _XkbClearDoodad((char *)doodad);
	}
	if (freeAll)
	    _XkbFree(doodads);
    }
    return;
}

void
XkbFreeGeometry(XkbGeometryPtr geom,unsigned which,Bool freeMap)
{
    if (geom==NULL)
	return;
    if (freeMap)
	which= XkbGeomAllMask;
    if ((which&XkbGeomPropertiesMask)&&(geom->properties!=NULL))
	XkbFreeGeomProperties(geom,0,geom->num_properties,True);
    if ((which&XkbGeomColorsMask)&&(geom->colors!=NULL))
	XkbFreeGeomColors(geom,0,geom->num_colors,True);
    if ((which&XkbGeomShapesMask)&&(geom->shapes!=NULL))
	XkbFreeGeomShapes(geom,0,geom->num_shapes,True);
    if ((which&XkbGeomSectionsMask)&&(geom->sections!=NULL))
	XkbFreeGeomSections(geom,0,geom->num_sections,True);
    if ((which&XkbGeomDoodadsMask)&&(geom->doodads!= NULL)) {
	XkbFreeGeomDoodads(geom->doodads,geom->num_doodads,True);
	geom->doodads= NULL;
	geom->num_doodads= geom->sz_doodads= 0;
    }
    if ((which&XkbGeomKeyAliasesMask)&&(geom->key_aliases!=NULL))
	XkbFreeGeomKeyAliases(geom,0,geom->num_key_aliases,True);
    if (freeMap) {
	if (geom->label_font!=NULL) {
	    _XkbFree(geom->label_font);
	    geom->label_font= NULL;
	}
	_XkbFree(geom);
    }
    return;
}

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

static Status
_XkbGeomAlloc(	XPointer *		old,
		unsigned short *	num,
		unsigned short *	total,
		int			num_new,
		Size_t			sz_elem)
{
    if (num_new<1)
	return Success;
    if ((*old)==NULL)
	*num= *total= 0;

    if ((*num)+num_new<=(*total))
	return Success;

    *total= (*num)+num_new;
    if ((*old)!=NULL)
	 (*old)= (XPointer)_XkbRealloc((*old),(*total)*sz_elem);
    else (*old)= (XPointer)_XkbCalloc((*total),sz_elem);
    if ((*old)==NULL) {
	*total= *num= 0;
	return BadAlloc;
    }

    if (*num>0) {
	char *tmp= (char *)(*old);
	bzero(&tmp[sz_elem*(*num)],(num_new*sz_elem));
    }
    return Success;
}

#define	_XkbAllocProps(g,n) _XkbGeomAlloc((XPointer *)&(g)->properties,\
				&(g)->num_properties,&(g)->sz_properties,\
				(n),sizeof(XkbPropertyRec))
#define	_XkbAllocColors(g,n) _XkbGeomAlloc((XPointer *)&(g)->colors,\
				&(g)->num_colors,&(g)->sz_colors,\
				(n),sizeof(XkbColorRec))
#define	_XkbAllocShapes(g,n) _XkbGeomAlloc((XPointer *)&(g)->shapes,\
				&(g)->num_shapes,&(g)->sz_shapes,\
				(n),sizeof(XkbShapeRec))
#define	_XkbAllocSections(g,n) _XkbGeomAlloc((XPointer *)&(g)->sections,\
				&(g)->num_sections,&(g)->sz_sections,\
				(n),sizeof(XkbSectionRec))
#define	_XkbAllocDoodads(g,n) _XkbGeomAlloc((XPointer *)&(g)->doodads,\
				&(g)->num_doodads,&(g)->sz_doodads,\
				(n),sizeof(XkbDoodadRec))
#define	_XkbAllocKeyAliases(g,n) _XkbGeomAlloc((XPointer *)&(g)->key_aliases,\
				&(g)->num_key_aliases,&(g)->sz_key_aliases,\
				(n),sizeof(XkbKeyAliasRec))

#define	_XkbAllocOutlines(s,n) _XkbGeomAlloc((XPointer *)&(s)->outlines,\
				&(s)->num_outlines,&(s)->sz_outlines,\
				(n),sizeof(XkbOutlineRec))
#define	_XkbAllocRows(s,n) _XkbGeomAlloc((XPointer *)&(s)->rows,\
				&(s)->num_rows,&(s)->sz_rows,\
				(n),sizeof(XkbRowRec))
#define	_XkbAllocPoints(o,n) _XkbGeomAlloc((XPointer *)&(o)->points,\
				&(o)->num_points,&(o)->sz_points,\
				(n),sizeof(XkbPointRec))
#define	_XkbAllocKeys(r,n) _XkbGeomAlloc((XPointer *)&(r)->keys,\
				&(r)->num_keys,&(r)->sz_keys,\
				(n),sizeof(XkbKeyRec))
#define	_XkbAllocOverlays(s,n) _XkbGeomAlloc((XPointer *)&(s)->overlays,\
				&(s)->num_overlays,&(s)->sz_overlays,\
				(n),sizeof(XkbOverlayRec))
#define	_XkbAllocOverlayRows(o,n) _XkbGeomAlloc((XPointer *)&(o)->rows,\
				&(o)->num_rows,&(o)->sz_rows,\
				(n),sizeof(XkbOverlayRowRec))
#define	_XkbAllocOverlayKeys(r,n) _XkbGeomAlloc((XPointer *)&(r)->keys,\
				&(r)->num_keys,&(r)->sz_keys,\
				(n),sizeof(XkbOverlayKeyRec))
    
Status
XkbAllocGeomProps(XkbGeometryPtr geom,int nProps)
{
    return _XkbAllocProps(geom,nProps);
}

Status
XkbAllocGeomColors(XkbGeometryPtr geom,int nColors)
{
    return _XkbAllocColors(geom,nColors);
}

Status
XkbAllocGeomKeyAliases(XkbGeometryPtr geom,int nKeyAliases)
{
    return _XkbAllocKeyAliases(geom,nKeyAliases);
}

Status
XkbAllocGeomShapes(XkbGeometryPtr geom,int nShapes)
{
    return _XkbAllocShapes(geom,nShapes);
}

Status
XkbAllocGeomSections(XkbGeometryPtr geom,int nSections)
{
    return _XkbAllocSections(geom,nSections);
}

Status
XkbAllocGeomOverlays(XkbSectionPtr section,int nOverlays)
{
    return _XkbAllocOverlays(section,nOverlays);
}

Status
XkbAllocGeomOverlayRows(XkbOverlayPtr overlay,int nRows)
{
    return _XkbAllocOverlayRows(overlay,nRows);
}

Status
XkbAllocGeomOverlayKeys(XkbOverlayRowPtr row,int nKeys)
{
    return _XkbAllocOverlayKeys(row,nKeys);
}

Status
XkbAllocGeomDoodads(XkbGeometryPtr geom,int nDoodads)
{
    return _XkbAllocDoodads(geom,nDoodads);
}

Status
XkbAllocGeomSectionDoodads(XkbSectionPtr section,int nDoodads)
{
    return _XkbAllocDoodads(section,nDoodads);
}

Status
XkbAllocGeomOutlines(XkbShapePtr shape,int nOL)
{
    return _XkbAllocOutlines(shape,nOL);
}

Status
XkbAllocGeomRows(XkbSectionPtr section,int nRows)
{
    return _XkbAllocRows(section,nRows);
}

Status
XkbAllocGeomPoints(XkbOutlinePtr ol,int nPts)
{
    return _XkbAllocPoints(ol,nPts);
}

Status
XkbAllocGeomKeys(XkbRowPtr row,int nKeys)
{
    return _XkbAllocKeys(row,nKeys);
}

Status
XkbAllocGeometry(XkbDescPtr xkb,XkbGeometrySizesPtr sizes)
{
XkbGeometryPtr	geom;
Status		rtrn;

    if (xkb->geom==NULL) {
	xkb->geom= _XkbTypedCalloc(1,XkbGeometryRec);
	if (!xkb->geom)
	    return BadAlloc;
    }
    geom= xkb->geom;
    if ((sizes->which&XkbGeomPropertiesMask)&&
	((rtrn=_XkbAllocProps(geom,sizes->num_properties))!=Success)) {
	goto BAIL;
    }
    if ((sizes->which&XkbGeomColorsMask)&&
	((rtrn=_XkbAllocColors(geom,sizes->num_colors))!=Success)) {
	goto BAIL;
    }
    if ((sizes->which&XkbGeomShapesMask)&&
	((rtrn=_XkbAllocShapes(geom,sizes->num_shapes))!=Success)) {
	goto BAIL;
    }
    if ((sizes->which&XkbGeomSectionsMask)&&
	((rtrn=_XkbAllocSections(geom,sizes->num_sections))!=Success)) {
	goto BAIL;
    }
    if ((sizes->which&XkbGeomDoodadsMask)&&
	((rtrn=_XkbAllocDoodads(geom,sizes->num_doodads))!=Success)) {
	goto BAIL;
    }
    if ((sizes->which&XkbGeomKeyAliasesMask)&&
	((rtrn=_XkbAllocKeyAliases(geom,sizes->num_key_aliases))!=Success)) {
	goto BAIL;
    }
    return Success;
BAIL:
    XkbFreeGeometry(geom,XkbGeomAllMask,True);
    xkb->geom= NULL;
    return rtrn;
}

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

XkbPropertyPtr
XkbAddGeomProperty(XkbGeometryPtr geom,char *name,char *value)
{
register int i;
register XkbPropertyPtr prop;

    if ((!geom)||(!name)||(!value))
	return NULL;
    for (i=0,prop=geom->properties;i<geom->num_properties;i++,prop++) {
	if ((prop->name)&&(strcmp(name,prop->name)==0)) {
	    if (prop->value)
		_XkbFree(prop->value);
	    prop->value= (char *)_XkbAlloc(strlen(value)+1);
	    if (prop->value)
		strcpy(prop->value,value);
	    return prop;
	}    
    }
    if ((geom->num_properties>=geom->sz_properties)&&
					(_XkbAllocProps(geom,1)!=Success)) {
	return NULL;
    }
    prop= &geom->properties[geom->num_properties];
    prop->name= (char *)_XkbAlloc(strlen(name)+1);
    if (!name)
	return NULL;
    strcpy(prop->name,name);
    prop->value= (char *)_XkbAlloc(strlen(value)+1);
    if (!value) {
	_XkbFree(prop->name);
	prop->name= NULL;
	return NULL;
    }
    strcpy(prop->value,value);
    geom->num_properties++;
    return prop;
}

XkbKeyAliasPtr
XkbAddGeomKeyAlias(XkbGeometryPtr geom,char *aliasStr,char *realStr)
{
register int i;
register XkbKeyAliasPtr alias;

    if ((!geom)||(!aliasStr)||(!realStr)||(!aliasStr[0])||(!realStr[0]))
	return NULL;
    for (i=0,alias=geom->key_aliases;i<geom->num_key_aliases;i++,alias++) {
	if (strncmp(alias->alias,aliasStr,XkbKeyNameLength)==0) {
	    bzero(alias->real,XkbKeyNameLength);
	    strncpy(alias->real,realStr,XkbKeyNameLength);
	    return alias;
	}
    }
    if ((geom->num_key_aliases>=geom->sz_key_aliases)&&
				(_XkbAllocKeyAliases(geom,1)!=Success)) {
	return NULL;
    }
    alias= &geom->key_aliases[geom->num_key_aliases];
    bzero(alias,sizeof(XkbKeyAliasRec));
    strncpy(alias->alias,aliasStr,XkbKeyNameLength);
    strncpy(alias->real,realStr,XkbKeyNameLength);
    geom->num_key_aliases++;
    return alias;
}

XkbColorPtr
XkbAddGeomColor(XkbGeometryPtr geom,char *spec,unsigned int pixel)
{
register int i;
register XkbColorPtr color;

    if ((!geom)||(!spec))
	return NULL;
    for (i=0,color=geom->colors;i<geom->num_colors;i++,color++) {
	if ((color->spec)&&(strcmp(color->spec,spec)==0)) {
	    color->pixel= pixel;
	    return color;
	}
    }
    if ((geom->num_colors>=geom->sz_colors)&&
					(_XkbAllocColors(geom,1)!=Success)) {
	return NULL;
    }
    color= &geom->colors[geom->num_colors];
    color->pixel= pixel;
    color->spec= (char *)_XkbAlloc(strlen(spec)+1);
    if (!color->spec)
	return NULL;
    strcpy(color->spec,spec);
    geom->num_colors++;
    return color;
}

XkbOutlinePtr
XkbAddGeomOutline(XkbShapePtr shape,int sz_points)
{
XkbOutlinePtr	outline;

    if ((!shape)||(sz_points<0))
	return NULL;
    if ((shape->num_outlines>=shape->sz_outlines)&&
					(_XkbAllocOutlines(shape,1)!=Success)) {
	return NULL;
    }
    outline= &shape->outlines[shape->num_outlines];
    bzero(outline,sizeof(XkbOutlineRec));
    if ((sz_points>0)&&(_XkbAllocPoints(outline,sz_points)!=Success))
	return NULL;
    shape->num_outlines++;
    return outline;
}

XkbShapePtr
XkbAddGeomShape(XkbGeometryPtr geom,Atom name,int sz_outlines)
{
XkbShapePtr	shape;
register int	i;

    if ((!geom)||(!name)||(sz_outlines<0))
	return NULL;
    if (geom->num_shapes>0) {
	for (shape=geom->shapes,i=0;i<geom->num_shapes;i++,shape++) {
	    if (name==shape->name)
		return shape;
	}
    }
    if ((geom->num_shapes>=geom->sz_shapes)&&
					(_XkbAllocShapes(geom,1)!=Success))
	return NULL;
    shape= &geom->shapes[geom->num_shapes];
    bzero(shape,sizeof(XkbShapeRec));
    if ((sz_outlines>0)&&(_XkbAllocOutlines(shape,sz_outlines)!=Success))
	return NULL;
    shape->name= name;
    shape->primary= shape->approx= NULL;
    geom->num_shapes++;
    return shape;
}

XkbKeyPtr
XkbAddGeomKey(XkbRowPtr row)
{
XkbKeyPtr	key;
    if (!row)
	return NULL;
    if ((row->num_keys>=row->sz_keys)&&(_XkbAllocKeys(row,1)!=Success))
	return NULL;
    key= &row->keys[row->num_keys++];
    bzero(key,sizeof(XkbKeyRec));
    return key;
}

XkbRowPtr
XkbAddGeomRow(XkbSectionPtr section,int sz_keys)
{
XkbRowPtr	row;

    if ((!section)||(sz_keys<0))
	return NULL;
    if ((section->num_rows>=section->sz_rows)&&
    					(_XkbAllocRows(section,1)!=Success))
	return NULL;
    row= &section->rows[section->num_rows];
    bzero(row,sizeof(XkbRowRec));
    if ((sz_keys>0)&&(_XkbAllocKeys(row,sz_keys)!=Success))
	return NULL;
    section->num_rows++;
    return row;
}

XkbSectionPtr
XkbAddGeomSection(	XkbGeometryPtr	geom,
			Atom		name,
			int		sz_rows,
			int		sz_doodads,
			int		sz_over)
{
register int	i;
XkbSectionPtr	section;

    if ((!geom)||(name==None)||(sz_rows<0))
	return NULL;
    for (i=0,section=geom->sections;i<geom->num_sections;i++,section++) {
	if (section->name!=name)
	    continue;
	if (((sz_rows>0)&&(_XkbAllocRows(section,sz_rows)!=Success))||
	    ((sz_doodads>0)&&(_XkbAllocDoodads(section,sz_doodads)!=Success))||
	    ((sz_over>0)&&(_XkbAllocOverlays(section,sz_over)!=Success)))
	    return NULL;
	return section;
    }
    if ((geom->num_sections>=geom->sz_sections)&&
					(_XkbAllocSections(geom,1)!=Success))
	return NULL;
    section= &geom->sections[geom->num_sections];
    if ((sz_rows>0)&&(_XkbAllocRows(section,sz_rows)!=Success))
	return NULL;
    if ((sz_doodads>0)&&(_XkbAllocDoodads(section,sz_doodads)!=Success)) {
	if (section->rows) {
	    _XkbFree(section->rows);
	    section->rows= NULL;
	    section->sz_rows= section->num_rows= 0;
	}
	return NULL;
    }
    section->name= name;
    geom->num_sections++;
    return section;
}

XkbDoodadPtr
XkbAddGeomDoodad(XkbGeometryPtr geom,XkbSectionPtr section,Atom name)
{
XkbDoodadPtr	old,doodad;
register int	i,nDoodads;

    if ((!geom)||(name==None))
	return NULL;
    if ((section!=NULL)&&(section->num_doodads>0)) {
	old= section->doodads;
	nDoodads= section->num_doodads;
    }
    else {
	old= geom->doodads;
	nDoodads= geom->num_doodads;
    }
    for (i=0,doodad=old;i<nDoodads;i++,doodad++) {
	if (doodad->any.name==name)
	    return doodad;
    }
    if (section) {
	if ((section->num_doodads>=geom->sz_doodads)&&
	    (_XkbAllocDoodads(section,1)!=Success)) {
	    return NULL;
	}
	doodad= &section->doodads[section->num_doodads++];
    }
    else {
	if ((geom->num_doodads>=geom->sz_doodads)&&
					(_XkbAllocDoodads(geom,1)!=Success))
	    return NULL;
	doodad= &geom->doodads[geom->num_doodads++];
    }
    bzero(doodad,sizeof(XkbDoodadRec));
    doodad->any.name= name;
    return doodad;
}

XkbOverlayKeyPtr
XkbAddGeomOverlayKey(	XkbOverlayPtr		overlay,
			XkbOverlayRowPtr 	row,
			char *			over,
			char *			under)
{
register int	i;
XkbOverlayKeyPtr key;
XkbSectionPtr	section;
XkbRowPtr	row_under;
Bool		found;

    if ((!overlay)||(!row)||(!over)||(!under))
	return NULL;
    section= overlay->section_under;
    if (row->row_under>=section->num_rows)
	return NULL;
    row_under= &section->rows[row->row_under];
    for (i=0,found=False;i<row_under->num_keys;i++) {
	if (strncmp(under,row_under->keys[i].name.name,XkbKeyNameLength)==0) {
	    found= True;
	    break;
	}
    }
    if (!found)
   	return NULL; 
    if ((row->num_keys>=row->sz_keys)&&(_XkbAllocOverlayKeys(row,1)!=Success))
	return NULL;
    key= &row->keys[row->num_keys];
    strncpy(key->under.name,under,XkbKeyNameLength);
    strncpy(key->over.name,over,XkbKeyNameLength);
    row->num_keys++;
    return key;
}

XkbOverlayRowPtr
XkbAddGeomOverlayRow(XkbOverlayPtr overlay,int row_under,int sz_keys)
{
register int		i;
XkbOverlayRowPtr	row;

    if ((!overlay)||(sz_keys<0))
	return NULL;
    if (row_under>=overlay->section_under->num_rows)
	return NULL;
    for (i=0;i<overlay->num_rows;i++) {
	if (overlay->rows[i].row_under==row_under) {
	    row= &overlay->rows[i];
	    if ((row->sz_keys<sz_keys)&&
				(_XkbAllocOverlayKeys(row,sz_keys)!=Success)) {
		return NULL;
	    }
	    return &overlay->rows[i];
	}
    }
    if ((overlay->num_rows>=overlay->sz_rows)&&
				(_XkbAllocOverlayRows(overlay,1)!=Success))
	return NULL;
    row= &overlay->rows[overlay->num_rows];
    bzero(row,sizeof(XkbOverlayRowRec));
    if ((sz_keys>0)&&(_XkbAllocOverlayKeys(row,sz_keys)!=Success))
	return NULL;
    row->row_under= row_under;
    overlay->num_rows++;
    return row;
}

XkbOverlayPtr
XkbAddGeomOverlay(XkbSectionPtr section,Atom name,int sz_rows)
{
register int	i;
XkbOverlayPtr	overlay;

    if ((!section)||(name==None)||(sz_rows==0))
	return NULL;

    for (i=0,overlay=section->overlays;i<section->num_overlays;i++,overlay++) {
	if (overlay->name==name) {
	    if ((sz_rows>0)&&(_XkbAllocOverlayRows(overlay,sz_rows)!=Success))
		return NULL;
	    return overlay;
	}
    }
    if ((section->num_overlays>=section->sz_overlays)&&
				(_XkbAllocOverlays(section,1)!=Success))
	return NULL;
    overlay= &section->overlays[section->num_overlays];
    if ((sz_rows>0)&&(_XkbAllocOverlayRows(overlay,sz_rows)!=Success))
	return NULL;
    overlay->name= name;
    overlay->section_under= section;
    section->num_overlays++;
    return overlay;
}