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| -rw-r--r-- | README.md | 60 |
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@@ -2,8 +2,64 @@ Serd ==== Serd is a lightweight C library for RDF syntax which supports reading and -writing Turtle, NTriples, TriG, and NQuads. -For more information, see <http://drobilla.net/software/serd>. +writing [Turtle][], [TriG][], [NTriples][], and [NQuads][]. Serd is suitable +for performance-critical or resource-limited applications, such as serialising +very large data sets or embedded systems. + +Features +-------- + + * **Free:** Serd is [Free Software][] released under the extremely liberal + [ISC license][]. + + * **Portable and Dependency-Free:** Serd has no external dependencies other + than the C standard library. It is known to compile with GCC, Clang, and + MSVC (as C++), and is tested on GNU/Linux, MacOS, and Windows. + + * **Small:** Serd is implemented in a few thousand lines of C. It typically + compiles to about 100 KiB, or about 50 KiB stripped with size optimizations. + + * **Fast and Lightweight:** Serd can stream abbreviated Turtle, unlike many + tools which must first build an internal model. This makes it particularly + useful for writing very large data sets, since it can do so using only a + small amount of memory. Serd is, to the author's knowledge, the fastest + Turtle reader/writer by a wide margin (see [Performance](#performance) + below). + + * **Conformant and Well-Tested:** Serd passes all tests in the Turtle and TriG + test suites, correctly handles all "normal" examples in the URI + specification, and includes many additional tests which were written + manually or discovered with fuzz testing. The test suite is run + continuously on many platforms, has 100% code coverage by line, and runs + with zero memory errors or leaks. + +Performance +----------- + +The benchmarks below compare `serdi`, [rapper][], and [riot][] re-serialising +Turtle data generated by [sp2b][] on an i7-4980HQ running Debian 9. Of the +three, `serdi` is the fastest by a wide margin, and the only one that uses a +constant amount of memory (a single page) for all input sizes. + + + + + +Documentation +------------- + + * [API reference](https://drobilla.gitlab.io/serd/doc/html/index.html) + * [Test coverage report](https://drobilla.gitlab.io/serd/coverage/index.html) + * [`serdi` man page](https://drobilla.gitlab.io/serd/man/serdi.html) -- David Robillard <d@drobilla.net> +[Turtle]: https://www.w3.org/TR/turtle/ +[TriG]: https://www.w3.org/TR/trig/ +[NTriples]: https://www.w3.org/TR/n-triples/ +[NQuads]: https://www.w3.org/TR/n-quads/ +[Free Software]: http://www.gnu.org/philosophy/free-sw.html +[ISC license]: http://opensource.org/licenses/isc +[rapper]: http://librdf.org/raptor/ +[riot]: https://jena.apache.org/ +[sp2b]: http://www2.informatik.uni-freiburg.de/~mschmidt/docs/sp2b.pdf |