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Preserve all prefixes in an ontology with no statements #1159

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Preserve all prefixes in an ontology with no statements #1159

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3 changes: 2 additions & 1 deletion scripts/bench/subset.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@ const text = fs.readFileSync(src, "utf8");
const lines = text.split("\n");

// 前缀块原样保留：切掉它文件就解析不了
const prefixEnd = lines.findIndex((l) => l.startsWith("@prefix") === false && l.trim() && !l.startsWith("#"));
const firstStatement = lines.findIndex((l) => l.startsWith("@prefix") === false && l.trim() && !l.startsWith("#"));
const prefixEnd = firstStatement < 0 ? lines.length : firstStatement;
const prefixes = lines.slice(0, prefixEnd).join("\n");

// 按空行分块，但**必须知道自己在不在三引号字符串里**。
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17 changes: 17 additions & 0 deletions scripts/bench/subset.subset-prefix-only.test.mjs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
import test from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import { spawnSync } from "node:child_process";
const script = new URL("./subset.mjs", import.meta.url);
function subset(text, n) {
const dir=fs.mkdtempSync(path.join(os.tmpdir(), "utopia-subset-"));
try { const src=path.join(dir,"schema.ttl"); fs.writeFileSync(src,text); return spawnSync(process.execPath,[script.pathname,src,n],{encoding:"utf8"}); }
finally {fs.rmSync(dir,{recursive:true,force:true});}
}
test("prefix-only ontology retains its final declaration",()=>{
const text="@prefix schema: <https://schema.org/> .\n@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .";
const r=subset(text,"1"); assert.equal(r.status,0,r.stderr); assert.ok(r.stdout.includes(text),r.stdout);
});
test("empty source remains valid",()=>assert.equal(subset("","1").status,0));
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