120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
/*************************************************************************
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* *
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* YAP Prolog *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright V.Santos Costa and Universidade do Porto 1985-- *
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* *
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**************************************************************************
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* *
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* File: blobs.c *
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* comments: support blobs in YAP definition *
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* *
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* Last rev: $Date: $,$Author: vsc $ *
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* *
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* *
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*************************************************************************/
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#include <Yap.h>
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#include <Yatom.h>
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#include <string.h>
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#include <SWI-Prolog.h>
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#include "swi.h"
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PL_EXPORT(int)
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PL_is_blob(term_t t, PL_blob_t **type)
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{
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Term yt = Yap_GetFromSlot(t);
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Atom a;
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BlobPropEntry *b;
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if (IsVarTerm(yt))
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return FALSE;
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if (!IsAtomTerm(yt))
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return FALSE;
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a = AtomOfTerm(yt);
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if (!IsBlob(a))
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return FALSE;
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b = RepBlobProp(a->PropsOfAE);
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*type = b->blob_t;
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return TRUE;
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}
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PL_EXPORT(int)
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PL_unify_blob(term_t t, void *blob, size_t len, PL_blob_t *type)
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{
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fprintf(stderr,"PL_unify_blob not implemented yet\n");
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return FALSE;
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}
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PL_EXPORT(int)
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PL_put_blob(term_t t, void *blob, size_t len, PL_blob_t *type)
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{
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fprintf(stderr,"PL_put_blob not implemented yet\n");
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return FALSE;
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}
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PL_EXPORT(int)
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PL_get_blob(term_t t, void **blob, size_t *len, PL_blob_t **type)
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{
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fprintf(stderr,"PL_get_blob not implemented yet\n");
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return FALSE;
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}
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PL_EXPORT(void*)
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PL_blob_data(atom_t a, size_t *len, struct PL_blob_t **type)
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{
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Atom x = SWIAtomToAtom(a);
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if (!IsBlob(x)) {
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if (IsWideAtom(x)) {
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if ( len )
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*len = wcslen(x->WStrOfAE);
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if ( type )
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*type = SWI_Blobs;
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return x->WStrOfAE;
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}
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if ( len )
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*len = strlen(x->StrOfAE);
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if ( type )
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*type = SWI_Blobs;
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return x->StrOfAE;
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}
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if ( len )
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*len = x->rep.blob[0].length;
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if ( type )
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*type = RepBlobProp(x->PropsOfAE)->blob_t;
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return x->rep.blob[0].data;
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}
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PL_EXPORT(void)
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PL_register_blob_type(PL_blob_t *type)
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{
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fprintf(stderr,"PL_register_blob_type not implemented yet\n");
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}
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PL_EXPORT(PL_blob_t*)
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PL_find_blob_type(const char* name)
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{
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fprintf(stderr,"PL_find_blob_type not implemented yet\n");
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return NULL;
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}
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PL_EXPORT(int)
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PL_unregister_blob_type(PL_blob_t *type)
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{
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fprintf(stderr,"PL_unregister_blob_type not implemented yet\n");
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return FALSE;
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}
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void
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Yap_install_blobs(void)
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{
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}
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