GsfBlob

GsfBlob — A generic, unstructured block of binary data

Synopsis




                    GsfBlob;
                    GsfBlobClass;
GsfBlob*            gsf_blob_new                        (gsize size,
                                                         gconstpointer data_to_copy,
                                                         GError **error);
gsize               gsf_blob_get_size                   (GsfBlob *blob);
gconstpointer       gsf_blob_peek_data                  (GsfBlob *blob);

Object Hierarchy


  GObject
   +----GsfBlob

Description

Some libgsf functions, in particular the metadata functions, can generate unstructured blocks of data, or blobs. Libgsf represents these blobs using a GsfBlob object.

Details

GsfBlob

typedef struct _GsfBlob GsfBlob;

Represents an unstructured block of binary data, that is, a sequence of bytes and an integer specifying the size of the sequence.

GsfBlobClass

typedef struct {
	GObjectClass parent_class;
} GsfBlobClass;

gsf_blob_new ()

GsfBlob*            gsf_blob_new                        (gsize size,
                                                         gconstpointer data_to_copy,
                                                         GError **error);

Creates a new GsfBlob object to hold the specified data. The blob can then be used as a facility for reference-counting for the data. The data is copied internally, so the blob does not hold references to external chunks of memory.

size : Size of the data in bytes.
data_to_copy : Data which will be copied into the blob, or NULL if size is zero.
error : location to store error, or NULL.
Returns : A newly-created GsfBlob, or NULL if the data could not be copied. Error domain: GSF_ERROR Possible errors: GSF_ERROR_OUT_OF_MEMORY if the data_to_copy could not be copied.

gsf_blob_get_size ()

gsize               gsf_blob_get_size                   (GsfBlob *blob);

Queries the size in bytes of the data stored in the blob.

blob : A GsfBlob.
Returns : Size in bytes, or 0 if the data is NULL.

gsf_blob_peek_data ()

gconstpointer       gsf_blob_peek_data                  (GsfBlob *blob);

Queries a pointer to the data stored in the blob. This does not copy the data for you; it returns a pointer to the actual buffer which the blob uses internally, so you should not free this buffer on your own.

blob : A GsfBlob.
Returns : Pointer to the data stored in the blob, or NULL if the size of the data is zero.

See Also

GsfClipData, GsfMetadata