rapper(1)rapper(1)NAMErapper - Raptor RDF parsing and serializing utility
SYNOPSISrapper [OPTIONS] INPUT-URI [INPUT-BASE-URI]
EXAMPLErapper-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 syn‐
taxes. 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.
OPTIONSrapper uses the usual GNU command line syntax, with long options start‐
ing 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 omit‐
ted.
-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 mon‐
itoring 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.
EXAMPLESrapper-q-i ntriples -o rdfxml -f
'xmlns:rss="http://purl.org/rss/1.0/"' -f 'xmlns:ex="http://exam‐
ple.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⟩
SEE ALSOlibraptor(3),raptor-config(1)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)
