/* Copyright 1986, 1989, 1990 by Abacus Research and
 * Development, Inc.  All rights reserved.
 */

#if !defined (OMIT_RCSID_STRINGS)
char ROMlib_rcsid_resSetcur[] =
	"$Id: resSetcur.c 63 2004-12-24 18:19:43Z ctm $";
#endif

/* Forward declarations in ResourceMgr.h (DO NOT DELETE THIS LINE) */

#include "rsys/common.h"
#include "ResourceMgr.h"
#include "rsys/resource.h"

P0(PUBLIC pascal trap, INTEGER, CurResFile)
{
    ROMlib_setreserr(noErr);
    return(Cx(CurMap));
}

/* ROMlib_findmapres:
      does same as ROMlib_findres (see below) except map is specified */

A4(PUBLIC, OSErr, ROMlib_findmapres, resmaphand, map, Handle, r,	/* INTERNAL */
					       typref **, trp, resref **, rrp)
{
    INTEGER i, j;
    typref *tr;
    resref *rr;

    WALKTANDR(map, i, tr, j, rr)
        if ((Handle) MR(rr->rhand) == r) {
            *trp = tr;
            *rrp = rr;
            return(noErr);
        }
    EWALKTANDR(tr, rr)
    return(resNotFound);
}

/* ROMlib_findres:  given a handle to a resource, r,
	    ROMlib_findres fills in *mapp,
             *trp, *rrp with the Handle to the map, and pointers to
             the typref and the resref */
             
A4(PUBLIC, OSErr, ROMlib_findres, Handle, r, resmaphand *, mapp,	/* INTERNAL */
					       typref **, trp, resref **, rrp)
{
    resmaphand map;

    if (!r)
/*-->*/	return resNotFound;
    WALKMAPTOP(map)
        if (ROMlib_findmapres(map, r, trp, rrp) == noErr) {
            *mapp = map;
            return(noErr);
        }
    EWALKMAP()
    return(resNotFound);
}

P1(PUBLIC pascal trap, INTEGER, HomeResFile, Handle, res)
{
    resmaphand map;
    typref *tr;
    resref *rr;

    ROMlib_setreserr(ROMlib_findres(res, &map, &tr, &rr));
    if (ResErr != noErr)
        return(-1);
    else
        return(Hx(map, resfn));
}

P1(PUBLIC pascal trap, void, UseResFile, INTEGER, rn)
{
    Handle map;

    if (rn == 0)
        rn = Cx(SysMap);
    ROMlib_invalar();
    if (ROMlib_rntohandl(rn, &map)) {
        CurMap = CW(rn);
        ROMlib_setreserr(noErr);
    } else
        ROMlib_setreserr(resFNotFound);
}