/* $XConsortium: pexSc.c,v 5.7 93/01/06 13:57:17 mor Exp $ */

/***********************************************************
Copyright 1989, 1990, 1991 by Sun Microsystems, Inc. and the X Consortium.

                        All Rights Reserved

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 names of Sun Microsystems,
the X Consortium, and MIT not be used in advertising or publicity 
pertaining to distribution of the software without specific, written 
prior permission.  

SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT 
SHALL SUN MICROSYSTEMS 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.

******************************************************************/


/*++
 *	PEXCreateSearchContext
 *	PEXCopySearchContext
 *	PEXFreeSearchContext
 *	PEXGetSearchContext
 *	PEXChangeSearchContext
 *	PEXSearchNetwork
 --*/

#include "X.h"
#include "Xproto.h"
#include "pexError.h"
#include "dipex.h"
#include "PEXproto.h"
#include "pex_site.h"
#include "ddpex4.h"
#include "pexLookup.h"
#include "pexUtils.h"
#include "pexExtract.h"

#ifdef min
#undef min
#endif
 
#ifdef max
#undef max
#endif


#define SC_NS_LIMIT  20				/* arbitrary value */

#define CHK_PEX_BUF(SIZE,INCR,REPLY,TYPE,PTR) {\
    (SIZE)+=(INCR); \
      if (pPEXBuffer->bufSize < (SIZE)) { \
	ErrorCode err = Success; \
	int offset = (int)(((unsigned char *)(PTR)) - ((unsigned char *)(pPEXBuffer->pHead))); \
	err = puBuffRealloc(pPEXBuffer,(ddULONG)(SIZE)); \
	if (err) PEX_ERR_EXIT(err,0,cntxtPtr); \
	(REPLY) = (TYPE *)(pPEXBuffer->pHead); \
	(PTR) = (unsigned char *)(pPEXBuffer->pHead + offset); } \
}

static ErrorCode
AddToNSPair( incl, excl, pair )
diNSHandle incl, excl;
listofNSPair *pair;
{
    ddNSPair *ptr;
    if (pair->numPairs >= pair->maxPairs) {
	pair->maxPairs += SC_NS_LIMIT;
	pair->pPairs = (ddNSPair *)Xrealloc(    (pointer)(pair->pPairs),
						(unsigned long)(pair->maxPairs
						    * sizeof(ddNSPair)));
	if (!pair->pPairs) return(BadAlloc);
    }
    ptr = pair->pPairs + (unsigned long)(pair->numPairs);
    ptr->incl = incl; ptr->excl = excl;
    pair->numPairs++;

    return( Success );
}


/*
    add things to a list which has number things in it and can
    fill in up to end before needing to molt; shoe sizes come in quanta of incr

    note arrays of pointers do not point to contiguous structures 
 */
static ErrorCode
diAddThingToArray( thing, array, number, end, incr)
unsigned long	thing;
unsigned long	**array;
int		*number;
unsigned long	*end;
int		incr;
{
    int i = *number;
    unsigned long *ptr = *array;

    /* check to see if it's in the array already */
    if ( i ) {
	for ( ; i>0; i--, ptr++ ) if (*ptr == thing)
	    return(BadIDChoice);
    };

    if ((!array) ||
	((int)(*array) + *number > (int)end)) {	/*  need more room in array */
	unsigned long **bigger_array;
	bigger_array = 
	    (unsigned long **)Xrealloc((pointer)array, 
					(unsigned long)(sizeof(unsigned long) *
					  ((int)end - (int)*array + incr)));
	if (!bigger_array) return(BadAlloc);
	end += incr;
	*array = *bigger_array;
    };

    *ptr = thing;
    *number++;
    return( Success );
}

static ErrorCode
diAddThingToList( thing, list, number, end, incr)
unsigned long	thing;
unsigned long	*list;
int		*number;
unsigned long	*end;
int		incr;
{
    int i = *number;
    unsigned long *ptr = list;

    /* check to see if it's in the list already */
    if ( i ) {
	for ( ; i>0; i--, ptr++ ) if (*ptr == thing)
	    return(BadIDChoice);
    };

    if ((!list) ||
	((int)(list) + *number > (int)end)) {	/*  need more room in list */
	unsigned long *bigger_list;
	bigger_list = 
		(unsigned long *)Xrealloc((pointer)list, 
					 (unsigned long)(sizeof(unsigned long) *
					     ((int)end - (int)list + incr)));
	if (!bigger_list) return(BadAlloc);
	end += incr;
	list = bigger_list;
    };

    *ptr = thing;
    *number++;
    return( Success );
}


static ErrorCode
UpdateSearchContext (cntxtPtr, psc, itemMask, ptr)
pexContext	*cntxtPtr;
ddSCStr		*psc;
pexBitmask	itemMask;
unsigned char	*ptr;
{
    ErrorCode err = Success;

    if (itemMask & PEXSCPosition) {
	EXTRACT_COORD3D (&(psc->position), ptr);
    };

    if (itemMask & PEXSCDistance) {
	EXTRACT_FLOAT (psc->distance, ptr);
    };

    if (itemMask & PEXSCCeiling) {
	EXTRACT_CARD16_FROM_4B (psc->ceiling, ptr);
    }

    if (itemMask & PEXSCModelClipFlag) {
	EXTRACT_CARD8_FROM_4B (psc->modelClipFlag, ptr);
    }

    if (itemMask & PEXSCStartPath) {
	pexElementRef *per;
	diStructHandle sh, *psh;
	CARD32 i, numRefs = 0;
	extern ddpex4rtn ValidateStructurePath();

	EXTRACT_CARD32 (numRefs, ptr);
	for (i=0, per = (pexElementRef *)ptr; i<numRefs; i++, per++) {
		LU_STRUCTURE(per->structure,sh);
		psh = (diStructHandle *)&(per->structure);
		*psh = sh;
	}
	if (psc->startPath) puDeleteList(psc->startPath);
        psc->startPath = puCreateList(DD_ELEMENT_REF);
	if (!(psc->startPath)) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);
	puAddToList((ddPointer)ptr, numRefs, psc->startPath);
	err = ValidateStructurePath(psc->startPath);
	if (err != Success) PEX_ERR_EXIT(err,0,cntxtPtr);
	ptr = (unsigned char *)per;
    };

    if (itemMask & PEXSCNormalList) {
	unsigned long i, len;
	pexNameSetPair *pnsp=0;
	diNSHandle pi, pe;
	EXTRACT_CARD32 (len, ptr);
	for (i=0, pnsp = (pexNameSetPair *)ptr; i<len; i++, pnsp++) {
	    LU_NAMESET (pnsp->incl, pi);
	    LU_NAMESET (pnsp->excl, pe);
	    err = AddToNSPair(pi, pe, &(psc->normal));
	    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);
	};

	ptr = (unsigned char *)pnsp;
    };

    if (itemMask & PEXSCInvertedList) {
	unsigned long i, len;
	pexNameSetPair *pnsp=0;
	diNSHandle pi, pe;
	EXTRACT_CARD32 (len, ptr);
	for (i=0, pnsp = (pexNameSetPair *)ptr; i<len; i++, pnsp++) {
	    LU_NAMESET (pnsp->incl, pi);
	    LU_NAMESET (pnsp->excl, pe);
	    err = AddToNSPair(pi, pe, &(psc->inverted));
	    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);
	};

	ptr = (unsigned char *)pnsp;
    };

    return( err );
}


/*++	PEXCreateSearchContext
 --*/
ErrorCode
PEXCreateSearchContext (cntxtPtr, strmPtr)
pexContext              *cntxtPtr;
pexCreateSearchContextReq *strmPtr;
{
    ErrorCode err = Success;
    ErrorCode freeSearchContext();
    ddSCStr *psc;
    unsigned char *ptr;

    if (!LegalNewID(strmPtr->sc, cntxtPtr->client))
	PEX_ERR_EXIT(BadIDChoice,strmPtr->sc,cntxtPtr);

    CHECK_FP_FORMAT (strmPtr->fpFormat);

    psc = (ddSCStr *)Xalloc((unsigned long)sizeof(ddSCStr));
    if (!psc) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);
    psc->id = strmPtr->sc;
    psc->normal.numPairs=0;
    psc->normal.maxPairs=SC_NS_LIMIT;
    psc->normal.pPairs =
		(ddNSPair *)Xalloc(psc->normal.maxPairs * sizeof(ddNSPair));
    psc->inverted.numPairs=0;
    psc->inverted.maxPairs=SC_NS_LIMIT;
    psc->inverted.pPairs =
		(ddNSPair *)Xalloc(psc->inverted.maxPairs * sizeof(ddNSPair));

    psc->position.x = psc->position.y = psc->position.z = 0.0;
    psc->distance = 0.0;
    psc->ceiling = 1;
    psc->modelClipFlag = xFalse;

    if (strmPtr->itemMask & PEXSCStartPath)
	psc->startPath = 0;   /* list will be created in UpdateSearchContext */
    else
	psc->startPath = puCreateList(DD_ELEMENT_REF);

    ptr = (unsigned char *) (strmPtr + 1);


    err = UpdateSearchContext(cntxtPtr, psc, strmPtr->itemMask, ptr);
    if (err) {
	puDeleteList(psc->startPath);
	Xfree((pointer)psc);
	PEX_ERR_EXIT(err,0,cntxtPtr);
    }

    ADDRESOURCE(strmPtr->sc, PEXSearchType, psc);
    return( err );

} /* end-PEXCreateSearchContext() */

/*++	PEXCopySearchContext
 --*/
ErrorCode
PEXCopySearchContext (cntxtPtr, strmPtr)
pexContext              *cntxtPtr;
pexCopySearchContextReq *strmPtr;
{
    ErrorCode err = Success;
    ddSCStr *src, *dst;

    LU_SEARCHCONTEXT (strmPtr->src, src);
    LU_SEARCHCONTEXT (strmPtr->dst, dst);

    if (strmPtr->itemMask & PEXSCPosition) dst->position = src->position;

    if (strmPtr->itemMask & PEXSCDistance) dst->distance = src->distance;

    if (strmPtr->itemMask & PEXSCCeiling) dst->ceiling = src->ceiling;

    if (strmPtr->itemMask & PEXSCModelClipFlag)
	dst->modelClipFlag = src->modelClipFlag;

    if (strmPtr->itemMask & PEXSCStartPath) {
	puDeleteList (dst->startPath);
	dst->startPath = puCreateList(DD_ELEMENT_REF);
	if (!dst->startPath->pList) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);
	puCopyList(src->startPath, dst->startPath);
    };


    if (strmPtr->itemMask & PEXSCNormalList) {
	Xfree((pointer)(dst->normal.pPairs));
	dst->normal.pPairs =
	    (ddNSPair *) Xalloc(   (unsigned long)(src->normal.maxPairs * 
						 sizeof(ddNSPair)));
	if (! dst->normal.pPairs) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);

	bcopy ((char *)(src->normal.pPairs), (char *)(dst->normal.pPairs),
		(int)(src->normal.numPairs * sizeof(ddNSPair)));
	dst->normal.numPairs = src->normal.numPairs;
	dst->normal.maxPairs = src->normal.maxPairs;
    }


    if (strmPtr->itemMask & PEXSCInvertedList) {
	Xfree((pointer)dst->inverted.pPairs);
	dst->inverted.pPairs =
	    (ddNSPair *)Xalloc((unsigned long)(src->inverted.maxPairs*
						 sizeof(ddNSPair)));
	if (! dst->inverted.pPairs) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);

	bcopy ((char *)(src->inverted.pPairs), (char *)(dst->inverted.pPairs),
		(int)(src->inverted.numPairs * sizeof(ddNSPair)));
	dst->inverted.numPairs = src->inverted.numPairs;
	dst->inverted.maxPairs = src->inverted.maxPairs;
    }

    return( err );

} /* end-PEXCopySearchContext() */

ErrorCode
FreeSearchContext (ptr, id)
ddSCStr *ptr;
pexSC id;
{
    if (ptr->inverted.pPairs) Xfree ((pointer)(ptr->inverted.pPairs));
    if (ptr->normal.pPairs) Xfree ((pointer)(ptr->normal.pPairs));
    puDeleteList(ptr->startPath);

    Xfree((pointer)ptr);

    return( Success );
}

/*++	PEXFreeSearchContext
 --*/
ErrorCode
PEXFreeSearchContext (cntxtPtr, strmPtr)
pexContext              *cntxtPtr;
pexFreeSearchContextReq *strmPtr;
{
    ErrorCode err = Success;
    ddSCStr *psc;

    if ((strmPtr == NULL) || (strmPtr->id == 0)) {
	err = PEX_ERROR_CODE(PEXSearchContextError);
	PEX_ERR_EXIT(err,0,cntxtPtr);
    }

    LU_SEARCHCONTEXT (strmPtr->id, psc);

    FreeResource(strmPtr->id, RT_NONE);

    return( err );

} /* end-PEXFreeSearchContext() */

/*++	PEXGetSearchContext
 --*/
ErrorCode
PEXGetSearchContext( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexGetSearchContextReq  *strmPtr;
{
    ErrorCode err = Success;
    ddSCStr *psc;
    extern ddBuffer *pPEXBuffer;
    unsigned char *ptr = 0;
    pexGetSearchContextReply *reply
			    = (pexGetSearchContextReply *)(pPEXBuffer->pHead);
    int size = 0;

    LU_SEARCHCONTEXT (strmPtr->sc, psc);

    CHK_PEX_BUF(size, sizeof(pexGetSearchContextReply), reply,
		pexGetSearchContextReply, ptr);
    SETUP_INQ(pexGetSearchContextReply);
    ptr = pPEXBuffer->pBuf;

    if (strmPtr->itemMask & PEXSCPosition) {
	CHK_PEX_BUF(size, sizeof(pexCoord3D), reply, pexGetSearchContextReply,
		    ptr);
	PACK_COORD3D (&(psc->position), ptr);
    };

    if (strmPtr->itemMask & PEXSCDistance) {
	CHK_PEX_BUF(size, sizeof(PEXFLOAT), reply, pexGetSearchContextReply, ptr);
	PACK_FLOAT (psc->distance, ptr);
    };

    if (strmPtr->itemMask & PEXSCCeiling) {
	CHK_PEX_BUF(size, sizeof(CARD32), reply, pexGetSearchContextReply, ptr);
	PACK_CARD32 (psc->ceiling, ptr);
    }

    if (strmPtr->itemMask & PEXSCModelClipFlag) {
	CHK_PEX_BUF(size, sizeof(CARD32), reply, pexGetSearchContextReply, ptr);
	PACK_CARD32 (psc->modelClipFlag, ptr);
    }

    if (strmPtr->itemMask & PEXSCStartPath) {
	pexStructure sid = 0;
	unsigned long i;
	ddElementRef *per = (ddElementRef *)(psc->startPath->pList);

	CHK_PEX_BUF(size,
		    psc->startPath->numObj*sizeof(pexElementRef) +sizeof(CARD32),
		    reply, pexGetSearchContextReply,ptr);
	PACK_CARD32(psc->startPath->numObj,ptr);
	for (i=0; i<psc->startPath->numObj; i++, per++) {
	    sid = GetId(per->structure);
	    PACK_CARD32(sid, ptr);
	    PACK_CARD32(per->offset, ptr);
	}
    };

    if (strmPtr->itemMask & PEXSCNormalList) {
	int i;
	ddNSPair *src;
	pexNameSet *dst;
	CHK_PEX_BUF(size, psc->normal.numPairs * 2 * sizeof(pexNameSet) + 4,
		    reply, pexGetSearchContextReply, ptr);
	PACK_CARD32(psc->normal.numPairs, ptr);
	for (i=0, src = psc->normal.pPairs, dst = (pexNameSet *)ptr;
	     i<psc->normal.numPairs; i++, src++) {
		*dst++ = src->incl->id;
		*dst++ = src->excl->id; }
	ptr = (unsigned char *)dst;
    };

    if (strmPtr->itemMask & PEXSCInvertedList) {
	int i;
	ddNSPair *src;
	pexNameSet *dst;
	CHK_PEX_BUF(size, psc->inverted.numPairs * 2 * sizeof(pexNameSet) + 4,
		    reply, pexGetSearchContextReply, ptr);
	PACK_CARD32(psc->inverted.numPairs, ptr);
	for (i=0, src = psc->inverted.pPairs, dst = (pexNameSet *)ptr;
	     i<psc->inverted.numPairs; i++, src++) {
		*dst++ = src->incl->id;
		*dst++ = src->excl->id; }
	ptr = (unsigned char *)dst;
    };

    reply->length = size - sizeof(pexGetSearchContextReply);
    reply->length = LWORDS(reply->length);
    WritePEXReplyToClient(  cntxtPtr, strmPtr,
        sizeof (pexGetSearchContextReply) + sizeof(CARD32) * reply->length,
	reply);

    return( err );

} /* end-PEXGetSearchContext() */

/*++	PEXChangeSearchContext
 --*/
ErrorCode
PEXChangeSearchContext( cntxtPtr, strmPtr )
pexContext     			*cntxtPtr;
pexChangeSearchContextReq    	*strmPtr;
{
    ErrorCode err = Success;
    ddSCStr *psc;
    unsigned char *ptr = (unsigned char *) (strmPtr + 1);

    LU_SEARCHCONTEXT (strmPtr->sc, psc);

    CHECK_FP_FORMAT (strmPtr->fpFormat);

    err = UpdateSearchContext(cntxtPtr, psc, strmPtr->itemMask, ptr);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);
    return( err );

} /* end-PEXChangeSearchContext() */

/*++	PEXSearchNetwork
 --*/
ErrorCode
PEXSearchNetwork( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexSearchNetworkReq    	*strmPtr;
{
    ErrorCode err = Success;
    ddSCStr *psc;
    extern ddBuffer *pPEXBuffer;
    CARD32 numItems;

    LU_SEARCHCONTEXT (strmPtr->id, psc);

    SETUP_INQ(pexSearchNetworkReply);

    err = SearchNetwork (psc, &numItems, pPEXBuffer);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);

    {
	SETUP_VAR_REPLY(pexSearchNetworkReply);
	reply->numItems = numItems;
	WritePEXBufferReply(pexSearchNetworkReply);
    }
    return( err );

} /* end-PEXSearchNetwork() */
/*++
 *
 *	End of File
 *
 --*/