SPARQL 1.1 formatter

Website: https://sparql-formatter.dbcls.jp/

npm: https://www.npmjs.com/package/sparql-formatter

Docker: https://hub.docker.com/r/sparqling/sparql-formatter

Usage in web pages

<script src='https://cdn.jsdelivr.net/gh/sparqling/sparql-formatter@v0.8.3/dist/main.js'></script>

Use the function:

spfmt(query, indentDepth = 2)

• query: string
• indentDepth: integer (>= 0)
• return value: string

Usage in Node.js

Example:

import { spfmt } from 'sparql-formatter';

console.log(spfmt('select * where {?s ?p ?o}'));

Output:

SELECT *
WHERE {
  ?s ?p ?o .
}

Command line interface

$ npm install -g sparql-formatter

Examples:

$ sparql-formatter sparql11-query/02.2.rq

or

$ cat sparql11-query/02.2.rq | sparql-formatter

or use Docker

$ cat sparql11-query/02.2.rq | docker run -i --rm sparqling/sparql-formatter

or

$ docker run --rm -v $(pwd):/work sparqling/sparql-formatter sparql11-query/02.2.rq

Input:

PREFIX foaf:   <http://xmlns.com/foaf/0.1/>
PREFIX foaf:   <http://xmlns.com/foaf/0.1/>
SELECT ?name ?mbox
WHERE
  { ?x foaf:name ?name .
    ?x foaf:mbox ?mbox }

Output:

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>

SELECT ?name ?mbox
WHERE {
  ?x foaf:name ?name .
  ?x foaf:mbox ?mbox .
}

Install from GitHub

$ git clone https://github.com/sparqling/sparql-formatter
$ cd sparql-formatter
$ npm ci

• Commands are in sparql-formatter/bin/*.

Optional: $ npm link

• Symbolic links to sparql-formatter/bin/* are created (as sparql-formatter and sparql-formatter-test in your path).

SPARQL 1.1 examples

• 91 SPARQL examples are extracted from the SPARQL 1.1 Query Language specification (https://www.w3.org/TR/sparql11-query/)
• 16 SPARQL examples are extracted from the SPARQL 1.1 Update specification (https://www.w3.org/TR/sparql11-update/)
• Other queries are added under test/ directory.

Test:

$ sparql-formatter-test sparql11-query/*.rq
true    sparql11-query/02.1.rq
true    sparql11-query/02.2.rq
...
true    sparql11-query/17.rq

• The sparql-formatter output for *.rq is compared with *.txt.