dtopen.c

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#include        <cdt/dthdr.h>
#include        <stdlib.h>
 
/*      Make a new dictionary
**
**      Written by Kiem-Phong Vo (5/25/96)
*/
 
Dt_t* dtopen(Dtdisc_t* disc, Dtmethod_t* meth)
{
        Dt_t*           dt;
        Dtdata_t*       data;
 
        if(!disc || !meth)
                return NULL;
 
        /* allocate space for dictionary */
        if(!(dt = malloc(sizeof(Dt_t))))
                return NULL;
 
        /* initialize all absolutely private data */
        dt->searchf = NULL;
        dt->meth = NULL;
        dt->disc = NULL;
        dtdisc(dt, disc);
        dt->nview = 0;
        dt->view = dt->walk = NULL;
        dt->user = NULL;
 
        /* allocate sharable data */
        if (!(data = malloc(sizeof(Dtdata_t))))
        {
                free(dt);
                return NULL;
        }
 
        data->type = meth->type;
        data->here = NULL;
        data->htab = NULL;
        data->ntab = data->size = data->loop = 0;
 
        dt->data = data;
        dt->searchf = meth->searchf;
        dt->meth = meth;
 
        return dt;
}