const TIFFFieldInfo*
_TIFFFieldWithTag(TIFF* tif, ttag_t tag)
{
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
if (!fip) {
TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithTag",
"Internal error, unknown tag 0x%x",
(unsigned int) tag);
}
return (fip);
}
const TIFFFieldInfo*
_TIFFFieldWithTag(TIFF* tif, ttag_t tag)
{
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
if (!fip) {
TIFFError("TIFFFieldWithTag",
"Internal error, unknown tag 0x%x", (u_int) tag);
assert(fip != NULL);
/*NOTREACHED*/
}
return (fip);
}
const TIFFFieldInfo*
_TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt )
{
const TIFFFieldInfo *fld;
fld = _TIFFFindFieldInfo( tif, tag, dt );
if( fld == NULL )
{
fld = _TIFFCreateAnonFieldInfo( tif, tag, dt );
_TIFFMergeFieldInfo( tif, fld, 1 );
}
return fld;
}
int
_TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
{
static const char module[] = "_TIFFMergeFieldInfo";
static const char reason[] = "for field info array";
TIFFFieldInfo** tp;
int i;
tif->tif_foundfield = NULL;
if (tif->tif_nfields > 0) {
tif->tif_fieldinfo = (TIFFFieldInfo**)
_TIFFCheckRealloc(tif, tif->tif_fieldinfo,
(tif->tif_nfields + n),
sizeof (TIFFFieldInfo*), reason);
} else {
tif->tif_fieldinfo = (TIFFFieldInfo**)
_TIFFCheckMalloc(tif, n, sizeof (TIFFFieldInfo*),
reason);
}
if (!tif->tif_fieldinfo) {
TIFFErrorExt(tif->tif_clientdata, module,
"Failed to allocate field info array");
return 0;
}
tp = tif->tif_fieldinfo + tif->tif_nfields;
for (i = 0; i < n; i++)
{
const TIFFFieldInfo *fip =
_TIFFFindFieldInfo(tif, info[i].field_tag, info[i].field_type);
/* only add definitions that aren't already present */
if (!fip) {
*tp++ = (TIFFFieldInfo*) (info + i);
tif->tif_nfields++;
}
}
/* Sort the field info by tag number */
qsort(tif->tif_fieldinfo, tif->tif_nfields,
sizeof (TIFFFieldInfo*), tagCompare);
return n;
}
