Add script to convert CRM class hierarchy

crmpg2rdf.js

@@ -0,0 +1,31 @@
+import fs from "fs"
+import { pgformat, ParsingError } from "pgraphs"
+
+const graph = pgformat.pg.parse(fs.readFileSync(`voc/crm-all-classes.pg`).toString())
+
+console.log(
+`@prefix crm: <http://www.cidoc-crm.org/cidoc-crm/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+`)
+
+const classes = []
+
+function emitClass(id) {
+    if (id in classes) return
+    console.log(`crm:${id} a owl:Class .`)
+    classes[id] = true
+}
+
+for (let { from, to, labels } of graph.edges) {
+    emitClass(from)
+    if (labels[0] === "replacedBy") {
+      console.log(`crm:${from} owl:deprecated true .`)
+    }
+    if (labels[0] == "superClass" || labels[0] == "replacedBy") {
+      console.log(`crm:${from} rdfs:subClassOf crm:${to} .`)
+    }
+}
+
+for (let { to } of graph.edges) { emitClass(to) }
+for (let { id } of graph.nodes) { emitClass(id) }