Solid Type Index Parser

A js library for working with typeindex files. It allows you to parse the turtle representation, update entries and finally convert it back to turtle. It does not cover fetching typeindex files.

Basic example

This example demonstrates how to parse a turtle string into an TypeIndexDoc object, then add a type entry and parse it back to turtle.

const SolidTypeIndexParser = require('SolidTypeIndexParser')

const typeIndexUrl = 'https://pod.example.org/settings/privateTypesIndex.ttl'
const turtle = `
@prefix : <#>.
@prefix solid: <http://www.w3.org/ns/solid/terms#>.
@prefix schem: <http://schema.org/>.
@prefix terms: <http://purl.org/dc/terms/>.

<> a solid:ListedDocument, solid:TypeIndex.`

const { TypeIndexParser } = SolidTypeIndexParser

async function main() {
  // Parse the turtle to an TypeIndexDoc object which we can modify
  const parser = new TypeIndexParser({ typeIndexUrl })
  const doc = await parser.turtleToTypeIndexDoc(turtle)

  // Give the type to the type index
  const solidType = new SolidType(
    "http://www.w3.org/2002/01/bookmark#Bookmark",
    "/public/bookmarks.ttl");
  }
  doc.addType(solidType,{ subjectId: '#bookmarks' })

  // Parse it back to turtle so we can store it in the pod
  const newTurtle = await parser.typeIndexDocToTurtle(doc)
  console.log(newTurtle)
}
main()

Output turtle

@prefix : <#>.
@prefix solid: <http://www.w3.org/ns/solid/terms#>.
@prefix schem: <http://schema.org/>.
@prefix terms: <http://purl.org/dc/terms/>.

<>
    a solid:ListedDocument, solid:TypeIndex;
    terms:references :bookmarks.

:bookmarks
    a solid:TypeRegistration;
    solid:forClass <http://www.w3.org/2002/01/bookmark#Bookmark>;
    solid:instance </public/bookmarks.ttl>.

Example for a registration with an instanceContainer

const SolidTypeIndexParser = require('SolidTypeIndexParser')

const typeIndexUrl = 'https://pod.example.org/settings/privateTypesIndex.ttl'
const turtle = `
@prefix : <#>.
@prefix solid: <http://www.w3.org/ns/solid/terms#>.
@prefix schem: <http://schema.org/>.
@prefix terms: <http://purl.org/dc/terms/>.

<> a solid:ListedDocument, solid:TypeIndex.`

const { TypeIndexParser } = SolidTypeIndexParser

async function main() {
  // Parse the turtle to an TypeIndexDoc object which we can modify
  const parser = new TypeIndexParser({ typeIndexUrl })
  const doc = await parser.turtleToTypeIndexDoc(turtle)

  // Give the type to the type index
  const solidType = new SolidType(
    "http://www.w3.org/2002/01/bookmark#Bookmark",
    undefined,
    "/public/bookmarks/");
  }
  doc.addType(solidType,{ subjectId: '#bookmarks' })

  // Parse it back to turtle so we can store it in the pod
  const newTurtle = await parser.typeIndexDocToTurtle(doc)
  console.log(newTurtle)
}
main()

Output turtle

@prefix : <#>.
@prefix solid: <http://www.w3.org/ns/solid/terms#>.
@prefix schem: <http://schema.org/>.
@prefix terms: <http://purl.org/dc/terms/>.

<>
    a solid:ListedDocument, solid:TypeIndex;
    terms:references :bookmarks.

:bookmarks
    a solid:TypeRegistration;
    solid:forClass <http://www.w3.org/2002/01/bookmark#Bookmark>;
    solid:instanceContainer </public/bookmarks/>.