/* Attempt to open a DSK file with driver <ndrv> */
static dsk_err_t dsk_iopen(DSK_DRIVER **self, const char *filename, int ndrv, COMPRESS_DATA *cd)
{
DRV_CLASS *dc = classes[ndrv];
dsk_err_t err;
/* If we're handling compressed data, use the temporary uncompressed file */
if (cd) filename = cd->cd_ufilename;
if (!dc) return DSK_ERR_BADPTR;
(*self) = dsk_malloc(dc->dc_selfsize);
if (!*self) return DSK_ERR_NOMEM;
dr_construct(*self, dc);
err = (dc->dc_open)(*self, filename);
/* printf("%s: open %s = %d\n", dc->dc_drvname, filename, err); */
if (err == DSK_ERR_OK)
{
(*self)->dr_compress = cd;
return err;
}
dsk_free (*self);
*self = NULL;
return err;
}
/* Attempt to create a DSK file with driver number <ndrv> */
static dsk_err_t dsk_icreat(DSK_DRIVER **self, const char *filename, int ndrv, COMPRESS_DATA *cd)
{
DRV_CLASS *dc = classes[ndrv];
dsk_err_t err;
if (!dc) return DSK_ERR_BADPTR;
(*self) = dsk_malloc(dc->dc_selfsize);
if (!*self) return DSK_ERR_NOMEM;
dr_construct(*self, dc);
err = (dc->dc_creat)(*self, filename);
if (err == DSK_ERR_OK)
{
(*self)->dr_compress = cd;
return err;
}
dsk_free (*self);
*self = NULL;
return err;
}
