]> Digests 3 REDLAND Library Digests Content digests. typedef librdf_digest; typedef librdf_digest_factory; librdf_digest* librdf_new_digest (librdf_world *world, const char *name); void librdf_free_digest (librdf_digest *digest); void librdf_digest_init (librdf_digest *digest); void librdf_digest_update (librdf_digest *digest, unsigned char *buf, size_t length); void librdf_digest_update_string (librdf_digest *digest, unsigned char *string); void librdf_digest_final (librdf_digest *digest); void* librdf_digest_get_digest (librdf_digest *digest); size_t librdf_digest_get_digest_length (librdf_digest *digest); char* librdf_digest_to_string (librdf_digest *digest); void librdf_digest_print (librdf_digest *digest, FILE *fh); Create a message digest over a block of data. Includes implementations of MD5, RMD160 and SHA1. librdf_digesttypedef struct librdf_digest_s librdf_digest; Redland content digest class. librdf_digest_factorytypedef struct librdf_digest_factory_s librdf_digest_factory; Redland digest factory class. librdf_new_digestlibrdf_digest* librdf_new_digest (librdf_world *world, const char *name); Constructor - create a new librdf_digest object. After construction, data should be added to the digest using librdf_digest_update or librdf_digest_update_string with librdf_digest_final to signify finishing. Then the digest value can be returned directly with librdf_digest_get_digest of librdf_digest_get_digest_length bytes or as a hex encoded string with librdf_digest_to_string. The digest can be re-initialised for new data with librdf_digest_init. world : redland world object name : the digest name to use to create this digest Returns : new librdf_digest object or NULL librdf_free_digestvoid librdf_free_digest (librdf_digest *digest); Destructor- destroy a librdf_digest object. digest : the digest librdf_digest_initvoid librdf_digest_init (librdf_digest *digest); (Re)initialise the librdf_digest object. This is automatically called on construction but can be used to re-initialise the digest to the initial state for digesting new data. digest : the digest librdf_digest_updatevoid librdf_digest_update (librdf_digest *digest, unsigned char *buf, size_t length); Add more data to the librdf_digest object. digest : the digest buf : the data buffer length : the length of the data librdf_digest_update_stringvoid librdf_digest_update_string (librdf_digest *digest, unsigned char *string); Add a string to the librdf_digest object. digest : the digest string : string to add librdf_digest_finalvoid librdf_digest_final (librdf_digest *digest); Finish the digesting of data. The digest can now be returned via librdf_digest_get_digest(). digest : the digest librdf_digest_get_digestvoid* librdf_digest_get_digest (librdf_digest *digest); Get the calculated digested value. digest : the digest Returns : pointer to the memory containing the digest. It will be librdf_digest_get_digest_length bytes in length. librdf_digest_get_digest_lengthsize_t librdf_digest_get_digest_length (librdf_digest *digest); Get length of the calculated digested. digest : the digest Returns : size of the digest in bytes librdf_digest_to_stringchar* librdf_digest_to_string (librdf_digest *digest); Get a string representation of the digest object. digest : the digest Returns : a newly allocated string that represents the digest. This must be released by the caller using free() librdf_digest_printvoid librdf_digest_print (librdf_digest *digest, FILE *fh); Print the digest to a FILE handle. digest : the digest fh : file handle