]> Heuristics 3 REDLAND Library Heuristics Utility heuristic functions. char* librdf_heuristic_gen_name (const char *name); int librdf_heuristic_is_blank_node (const char *node); const char* librdf_heuristic_get_blank_node (const char *node); int librdf_heuristic_object_is_literal (const char *object); Various utility functions for performing heuristics such as generating a name, guessing if a string is a URI or RDF literal. librdf_heuristic_gen_namechar* librdf_heuristic_gen_name (const char *name); Generate a new name from an existing name. Adds an integer or increases the integer at the end of the name in order to generate a new one name : the name Returns : a new name or NULL on failure librdf_heuristic_is_blank_nodeint librdf_heuristic_is_blank_node (const char *node); Try to guess if an node string is a blank node identifier. The guessing is done by assuming the object is a blank node if it matches ^_: like N-Triples, N3 and related. node : string object to guess type Returns : non 0 if node is probably a blank node identifier librdf_heuristic_get_blank_nodeconst char* librdf_heuristic_get_blank_node (const char *node); Get a blank node identifier from a node string. Picks the blank node identifier out of a string. Looks for things like _:ABC node : string object to guess type Returns : the blank node identifer string or NULL if the node does not seem to be a blank node identifier librdf_heuristic_object_is_literalint librdf_heuristic_object_is_literal (const char *object); Try to guess if an object string is a literal or a resource. The guessing is done by assuming the object is a URL if it matches ^[isalnum()]+:[^isblank()]+$ This will be fooled by literals of form 'thing:non-blank-thing' but is good enough. object : string object to guess type Returns : non 0 if object is probably a literal