This is the command rapper that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
rapper - Raptor RDF parsing and serializing utility
SYNOPSIS
rapper [OPTIONS] INPUT-URI [INPUT-BASE-URI]
EXAMPLE
rapper -o ntriples http://planetrdf.com/guide/rss.rdf
rapper -i rss-tag-soup -o rss-1.0 pile-of-rss.xml http://example.org/base/
rapper --count http://example.org/index.rdf
DESCRIPTION
The rapper utility allows parsing of RDF content by the Raptor RDF parser toolkit emitting
the results as RDF triples in a choice of syntaxes. The INPUT-URI can be a file name, '-'
for standard input or if Raptor is built with a WWW retrieval library, a general URI. The
optional INPUT-BASE-URI is used as the document parser base URI if present otherwise
defaults to the IINPUT-URI. A value of '-' means no base URI.
OPTIONS
rapper uses the usual GNU command line syntax, with long options starting with two dashes
(`-') if supported by the getopt_long function. Otherwise the short options are only
available.
-h, --help
Show a summary of the options.
-i, --input FORMAT
Set the input FORMAT to one of 'rdfxml' (RDF/XML, default), 'ntriples' (N-Triples,
see below), 'turtle' (Turtle, see below) or 'rss-tag-soup' (RSS Tag Soup). The RSS
Tag Soup parser can turn the many XML RSS formats and Atom 0.3 into RDF triples.
The list of parsers depends on how libraptor(3) was built. The list of supported
parsers is given in the help summary given by -h.
-I, --input-uri URI
Set the input/parser base URI or use value '-' for no base. The default is the
INPUT-URI argument value.
-o, --output FORMAT
Set the output FORMAT to 'ntriples' (N-Triples, default), 'rdfxml' (RDF/XML),
'rdfxml-abbrev' (RDF/XML with abbreviations) or 'rss-1.0' (RSS 1.0, also an RDF/XML
syntax).
The list of serializers depends on how libraptor(3) was built. The list of
supported serializers is given in the help summary given by -h.
-O, --output-uri URI
Set the output/serializer base URI or use value '-' for no base. The default is
the input base uri, either set by the argument INPUT-BASE-URI or via options -I,
--input-uri URI
-c, --count
Only count the triples and produce no other output.
-e, --ignore-errors
Ignore errors, do not emit the messages and try to continue parsing.
-f, --feature FEATURE[=VALUE]
Set a parser or serializer feature FEATURE to a value, or to 1 if VALUE is omitted,
Use -f help to get lists of valid parser and serializer features.
If the form -f 'xmlns:prefix="uri"' is used, the prefix and namespace uri given
will be set for serializing. The syntax matches XML in that either or both of
prefix or uri can be omitted.
-g, --guess
Guess the parser to use from the source-URI rather than use the -i FORMAT.
-q, --quiet
No extra information messages.
-r, --replace-newlines
Replace newlines in multi-line literals with spaces.
-s, --scan
Scan for <rdf:RDF> element in the RDF/XML source content.
--show-graphs
Print graph names (URIs) as they are seen in the input. This only has a meaning
for parsers that support graph names such as the TRiG parser.
--show-namespaces
Print namespaces as they are seen in the input.
-t, --trace
Print URIs retrieved during parsing. Especially useful for monitoring what the
guess and GRDDL parsers are doing.
-w, --ignore-warnings
Ignore warnings, do not emit the messages.
-v, --version
Print the raptor version and exit.
EXAMPLES
rapper -q -i ntriples -o rdfxml -f 'xmlns:rss="http://purl.org/rss/1.0/"' -f
'xmlns:ex="http://example.org/"' tests/test.nt
rapper -q -o rdfxml -f 'xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"' tests/rdf-
schema.rdf 'http://www.w3.org/2000/01/rdf-schema#'
CONFORMING TO
RDF/XML Syntax (Revised), W3C Recommendation, http://www.w3.org/TR/rdf-syntax-grammar/
⟨http://www.w3.org/TR/rdf-syntax-grammar/⟩
N-Triples, in RDF Test Cases, Jan Grant and Dave Beckett (eds.), W3C Recommendation,
http://www.w3.org/TR/rdf-testcases/#ntriples ⟨http://www.w3.org/TR/rdf-
testcases/#ntriples⟩
Turtle Terse RDF Triple Language, Dave Beckett, http://www.dajobe.org/2004/01/turtle/
⟨http://www.dajobe.org/2004/01/turtle/⟩
RDFA in XHTML: Syntax and Processing, Ben Adida, Mark Birbeck, Shane McCarron and Steven
Pemberton (eds.), W3C Candidate Recommendation, 20 June 2008 http://www.w3.org/TR/2008/CR-
rdfa-syntax-20080620/ ⟨http://www.w3.org/TR/2008/CR-rdfa-syntax-20080620/⟩
RDF Site Summary (RSS) 1.0, 2000-12-06 http://purl.org/rss/1.0/spec
⟨http://purl.org/rss/1.0/spec⟩
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