Viewing file:  RDFPipe.py (2.67 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
from pprint import pprint
from rdflib.Namespace import Namespace
from rdflib import plugin,RDF,RDFS,URIRef
from rdflib.store import Store
from rdflib.Graph import Graph
from rdflib.syntax.NamespaceManager import NamespaceManager
RDFLIB_CONNECTION=''
RDFLIB_STORE='IOMemory'
import getopt, sys
def usage():
print """USAGE: RDFPipe.py [options]
Options:
--stdin Parse RDF from STDIN (useful for piping)
--help
--input-format Format of the input document(s). One of:
'xml','trix','n3','nt','rdfa'
--output Format of the final serialized RDF graph. One of:
'n3','xml','pretty-xml','turtle',or 'nt'
--ns=prefix=namespaceUri Register a namespace binding (QName prefix to a
base URI). This can be used more than once"""
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "", ["output=","ns=","input=","stdin","help","input-format="])
except getopt.GetoptError, e:
# print help information and exit:
print e
usage()
sys.exit(2)
factGraphs = []
factFormat = 'xml'
useRuleFacts = False
nsBinds = {
'rdf' : RDF.RDFNS,
'rdfs': RDFS.RDFSNS,
'owl' : "http://www.w3.org/2002/07/owl#",
'dc' : "http://purl.org/dc/elements/1.1/",
'foaf': "http://xmlns.com/foaf/0.1/",
'wot' : "http://xmlns.com/wot/0.1/"
}
outMode = 'n3'
stdIn = False
if not opts:
usage()
sys.exit()
for o, a in opts:
if o == '--input-format':
factFormat = a
elif o == '--stdin':
stdIn = True
elif o == '--output':
outMode = a
elif o == '--ns':
pref,nsUri = a.split('=')
nsBinds[pref]=nsUri
elif o == "--input":
factGraphs = a.split(',')
elif o == "--help":
usage()
sys.exit()
store = plugin.get(RDFLIB_STORE,Store)()
store.open(RDFLIB_CONNECTION)
namespace_manager = NamespaceManager(Graph())
for prefix,uri in nsBinds.items():
namespace_manager.bind(prefix, uri, override=False)
factGraph = Graph(store)
factGraph.namespace_manager = namespace_manager
if factGraphs:
for fileN in factGraphs:
factGraph.parse(fileN,format=factFormat)
if stdIn:
factGraph.parse(sys.stdin,format=factFormat)
print factGraph.serialize(destination=None, format=outMode, base=None)
store.rollback()
if __name__ == "__main__":
main()
|