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#!/usr/bin/env node
// Usage:
// git diff upstream/master...HEAD -G"pr-url:" -- "*.md" | \
// ./tools/lint-pr-url.mjs <expected-pr-url>
import process from 'node:process';
import readline from 'node:readline';
const [, , expectedPrUrl] = process.argv;
const fileDelimiter = /^\+\+\+ b\/(.+\.md)$/;
const changeDelimiter = /^@@ -\d+,\d+ \+(\d+),\d+ @@/;
const prUrlDefinition = /^\+\s+pr-url: (.+)$/;
const validatePrUrl = (url) => url == null || url === expectedPrUrl;
let currentFile;
let currentLine;
const diff = readline.createInterface({ input: process.stdin });
for await (const line of diff) {
if (fileDelimiter.test(line)) {
currentFile = line.match(fileDelimiter)[1];
console.log(`Parsing changes in ${currentFile}.`);
} else if (changeDelimiter.test(line)) {
currentLine = Number(line.match(changeDelimiter)[1]);
} else if (!validatePrUrl(line.match(prUrlDefinition)?.[1])) {
console.warn(
`::warning file=${currentFile},line=${currentLine++},col=${line.length}` +
'::pr-url doesn\'t match the URL of the current PR.'
);
} else if (line[0] !== '-') {
// Increment line counter if line is not being deleted.
currentLine++;
}
}
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