Ubuntu Manpage: rapper - Raptor RDF parsing and serializing utility

Provided by: raptor2-utils_2.0.15-0ubuntu1.20.04.1_amd64

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 INPUT-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.

--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⟩

CHANGES

   2.0.0
       Removed -a option that did nothing.

       Removed -m option from rapper but it was never documented here.

       Removed -n option that was long hidden.

       Removed -s option that was equivalent to -f scanForRDF

   1.4.16
       Added -I/--input-uri and -O/--output-uri to set the input and output (parser and  serializer)  base  URIs
       separately.

   1.4.15
       Added -t/--trace to do URI traces.

   1.4.5
       Updated to add serializer rdfxml-abbrev

   1.4.3
       Updated potential parser and serializers and described -f for defining namespaces.

   1.3.0
       Added -f for features.
       Added -g for guessing the parser to use.

   1.1.0
       Removed -a, --assume since rdf:RDF is now always optional.

AUTHOR

       Dave Beckett - http://www.dajobe.org/ ⟨http://www.dajobe.org/⟩

                                                   2010-04-28                                          rapper(1)