From 15a2c27da7ef7923c3e3266718c66cb430a052c0 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <github@addaleax.net>
Date: Thu, 26 Oct 2017 16:30:54 +0200
Subject: [PATCH] allow passing full URLs on the command line (#6)

i.e. make `get-metadata https://github.com/nodejs/node/pull/16489` work
---
 bin/metadata.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/bin/metadata.js b/bin/metadata.js
index 39da3fe7..92617495 100755
--- a/bin/metadata.js
+++ b/bin/metadata.js
@@ -25,7 +25,7 @@ const MetadataGenerator = require('../lib/metadata_gen');
 const OWNER = 'nodejs';
 const REPO = 'node';
 
-const PR_ID = parseInt(process.argv[2]);  // example
+const PR_ID = parsePRId(process.argv[2]);
 
 async function main(prid, owner, repo) {
   logger.trace(`Getting collaborator contacts from README of ${owner}/${repo}`);
@@ -68,3 +68,13 @@ main(PR_ID, OWNER, REPO).catch((err) => {
   logger.error(err);
   process.exit(-1);
 });
+
+function parsePRId(id) {
+  // Fast path: numeric string
+  if (`${+id}` === id)
+    return +id;
+  const match = id.match(/^https:.*\/pull\/([0-9]+)(?:\/(?:files)?)?$/);
+  if (match !== null)
+    return +match[1];
+  throw new Error(`Could not understand PR id format: ${id}`);
+}