Functions to directly retrieve Obiblobs from indexers

src/obidmscolumn_blob.c

@@ -0,0 +1,53 @@
+/****************************************************************************
+ * OBIDMS_column_blob functions                                             *
+ ****************************************************************************/
+
+/**
+ * @file obidsmcolumn_blob.c
+ * @author Celine Mercier
+ * @date November 9th 2015
+ * @brief Functions handling OBIColumns containing data in the form of indices referring to Obiblobs, to get blobs directly without decoding.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "obidmscolumn.h"
+#include "obitypes.h"
+#include "obiblob.h"
+
+
+/**********************************************************************
+ *
+ * D E F I N I T I O N   O F   T H E   P U B L I C   F U N C T I O N S
+ *
+ **********************************************************************/
+
+
+Obi_blob_p obi_column_get_obiblob_with_elt_idx(OBIDMS_column_p column, index_t line_nb, index_t element_idx)
+{
+	index_t idx;
+
+	if (obi_column_prepare_to_get_value(column, line_nb) < 0)
+		return OBIBlob_NA;
+
+	idx = *(((index_t*) (column->data)) + (line_nb * ((column->header)->nb_elements_per_line)) + element_idx);
+
+	// Check NA
+	if (idx == OBIIdx_NA)
+		return OBIBlob_NA;
+
+	return obi_indexer_get(column->indexer, idx);
+}
+
+
+Obi_blob_p obi_column_get_obiblob_with_elt_name(OBIDMS_column_p column, index_t line_nb, const char* element_name)
+{
+	index_t element_idx = obi_column_get_element_index_from_name(column, element_name);
+	if (element_idx == OBIIdx_NA)
+		return OBIBlob_NA;
+
+	return obi_column_get_obiblob_with_elt_idx(column, line_nb, element_idx);
+}
+