## 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