split the sarif file into languages

.github/workflows/ql-for-ql-build.yml

@@ -176,3 +176,13 @@ jobs:
         with:
           name: ql-for-ql.sarif
           path: ql-for-ql.sarif
+      - name: Split out the sarif file into langs
+        run: |
+          mkdir split-sarif
+          node ./ql/scripts/split-sarif.js ql-for-ql.sarif split-sarif
+      - name: Upload langs as artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: ql-for-ql-langs
+          path: split-sarif
+          retention-days: 1

ql/scripts/split-sarif.js

@@ -0,0 +1,30 @@
+var fs = require("fs");
+
+// the .sarif file to split, and then the directory to put the split files in.
+async function main(inputs) {
+  const sarifFile = JSON.parse(fs.readFileSync(inputs[0]));
+  const outFolder = inputs[1];
+
+  const out = {};
+
+  for (const result of sarifFile.runs[0].results) {
+    const lang = getLanguage(result);
+    if (!out[lang]) {
+      out[lang] = [];
+    }
+    out[lang].push(result);
+  }
+
+  for (const lang in out) {
+    const outSarif = JSON.parse(JSON.stringify(sarifFile));
+    outSarif.runs[0].results = out[lang];
+    fs.writeFileSync(`${outFolder}/${lang}.sarif`, JSON.stringify(outSarif, null, 2));
+  }
+}
+
+function getLanguage(result) {
+  return result.locations[0].physicalLocation.artifactLocation.uri.split(
+    "/"
+  )[0];
+}
+main(process.argv.splice(2));