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diff --git a/doc/man/serd-filter.1 b/doc/man/serd-filter.1 new file mode 100644 index 00000000..e05559e2 --- /dev/null +++ b/doc/man/serd-filter.1 @@ -0,0 +1,188 @@ +.Dd October 21, 2021 +.Dt SERD-FILTER 1 +.Os Serd +.Sh NAME +.Nm serd-filter +.Nd print RDF statements that match a pattern +.Sh SYNOPSIS +.Nm serd-filter +.Op Fl hVv +.Op Fl B Ar base +.Op Fl I Ar syntax +.Op Fl O Ar syntax +.Op Fl b Ar bytes +.Op Fl f Ar pattern_file +.Op Fl k Ar bytes +.Op Fl o Ar filename +.Ar pattern +.Op Ar input ... +.Sh DESCRIPTION +.Nm +scans for statements in RDF data. +Its interface is similar to +.Xr grep 1 , +except patterns are structural: +instead of matching characters within a line, +.Nm +matches nodes within a statement. +.Pp +Data is read from files or standard input, +and only those statements that match the pattern +(or do not match the pattern, if +.Fl v +is given) are written. +By default, +the input syntax is guessed from the file extension, +and line-based output is written to standard output. +.Pp +Patterns are written in NTriples or NQuads with an extension that allows variables like +.Li ?some +or +.Li $thing . +.Pp +The +.Ar input +operands are processed in command-line order. +If +.Ar input +is +.Ar - +or absent, +.Nm +reads from standard input. +.Pp +The options are as follows: +.Pp +.Bl -tag -compact -width 3n +.It Fl B Ar base +Base URI, path, or +.Cm rebase +to use the output path. +See +.Xr serd-pipe 1 +for details. +.Pp +.It Fl I Ar syntax +Input syntax or option: +.Cm NQuads , +.Cm NTriples , +.Cm TriG , +.Cm Turtle , +.Cm lax , +.Cm variables , +.Cm relative , +or +.Cm labels . +See +.Xr serd-pipe 1 +for details. +.Pp +.It Fl O Ar syntax +Output syntax or option: +.Cm empty , +.Cm NQuads , +.Cm NTriples , +.Cm TriG , +.Cm Turtle , +.Cm ascii , +.Cm contextual , +.Cm expanded , +.Cm verbatim , +.Cm terse , +or +.Cm lax . +See +.Xr serd-pipe 1 +for details. +.Pp +.It Fl V +Display version information and exit. +.Pp +.It Fl b Ar bytes +I/O block size. +See +.Xr serd-pipe 1 +for details. +.Pp +.It Fl f Ar pattern_file +Load pattern from +.Ar pattern_file +instead of the first positional argument. +.Pp +.It Fl h +Print the command line options. +.Pp +.It Fl k Ar bytes +Parser stack size. +See +.Xr serd-pipe 1 +for details. +.Pp +.It Fl o Ar filename +Write output to the given +.Ar filename +instead of stdout. +.Pp +.It Fl v +Invert filter to only emit statements that do +.Em not +match the pattern. +.El +.Sh EXIT STATUS +.Nm +exits with a status of 0, or non-zero if an error occured. +.Sh EXAMPLES +To print all type statements: +.Pp +.Dl $ serd-filter '?subject a ?type .' input.ttl +.Pp +To print every statement about http://example.org/subject: +.Pp +.Dl $ serd-filter '<http://example.org/subject> ?p ?o .' input.ttl +.Sh SEE ALSO +.Bl -item -compact +.It +.Xr serd-pipe 1 +.It +.Xr serd-sort 1 +.It +.Xr serd-validate 1 +.It +.Lk http://drobilla.net/software/serd/ +.El +.Sh STANDARDS +.Bl -item -compact +.It +.Rs +.%A W3C +.%T RDF 1.1 NQuads +.%D February 2014 +.Re +.Lk https://www.w3.org/TR/n-quads/ +.It +.Rs +.%A W3C +.%D February 2014 +.%T RDF 1.1 NTriples +.Re +.Lk https://www.w3.org/TR/n-triples/ +.It +.Rs +.%A W3C +.%T RDF 1.1 TriG +.%D February 2014 +.Re +.Lk https://www.w3.org/TR/trig/ +.It +.Rs +.%A W3C +.%D February 2014 +.%T RDF 1.1 Turtle +.Re +.Lk https://www.w3.org/TR/turtle/ +.El +.Sh AUTHORS +.Nm +is a part of serd, by +.An David Robillard +.Mt d@drobilla.net . |