serdi —
read and write RDF syntax
serdi |
[ -abefhlqv
]
[-c
prefix
]
[-i
syntax
]
[-o
syntax
]
[-p
prefix
]
[-r
root
]
[-s
string
]
input
[base_uri ] |
serdi is a fast command-line utility for
streaming and processing RDF data. It reads an RDF document and writes the
data to stdout, possibly transformed and/or in a different syntax. By default,
the input syntax is guessed from the file extension, and output is written in
NTriples or NQuads.
serdi can be used to check for syntax errors,
convert from one syntax to another, pretty-print documents, or transform URIs
and blank node IDs.
The options are as follows:
-a- Write ASCII output. If this is enabled, all non-ASCII characters will be
escaped, even if the output syntax allows them to be written in UTF-8.
-b- Bulk output writing. If this is enabled, output will be written a page at
a time, rather than a byte at a time.
-c
prefix- Chop prefix from matching blank node IDs.
This is the inverse of
-p.
-e- Eat input one character at a time, rather than a page at a time which is
the default. This is useful when reading from a pipe since output will be
generated immediately as input arrives, rather than waiting until an
entire page of input has arrived. With this option serdi uses one page
less memory, but will likely be significantly slower.
-f- Keep full URIs in input (don't qualify with namespace prefixes or make
URIs relative).
-h- Print the command line options.
-i
syntax- Read input as syntax. Case is ignored,
valid values are: “NQuads”, “NTriples”,
“TriG”, “Turtle”.
-l- Lax (non-strict) parsing. If this is enabled, recoverable syntax errors
will print a warning, but parsing will proceed starting at the next
statement if possible. Note that data may be lost when using this option.
-o
syntax- Write output as syntax. Case is ignored,
valid values are: “NQuads”, “NTriples”,
“TriG”, “Turtle”.
-p
prefix- Add prefix to blank node IDs. This can be
used to avoid clashes between blank node IDs in input documents.
-q- Suppress all output except data.
-r
root- Keep relative URIs within a root URI.
This will avoid creating any relative URI references with leading path
segments like “../” that enter a parent of
root.
-s
string- Parse string input instead of a file
(terminates options).
-v- Display version information and exit.
serdi exits with a status of 0, or non-zero
if an error occured.
To pretty-print a document:
$ serdi -o turtle file.ttl >
out.ttl
To print any errors:
$ serdi file.ttl >
/dev/null
serdi is a part of serd, by
David Robillard
d@drobilla.net.