add cargo_check.py

1 files changed, 28 insertions, 0 deletions

diff --git a/cargo_check.py b/cargo_check.py
new file mode 100755
index 0000000..3350c56
--- /dev/null
+++ b/cargo_check.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+# Written by Martin Fischer <martin@push-f.com> and licensed under MIT.
+from multiprocessing.dummy import Pool
+import toml
+import requests
+
+sess = requests.session()
+sess.headers['user-agent'] = 'cargo_check.py'
+
+tasks = []
+
+with open('Cargo.toml') as f:
+    data = toml.load(f)
+    for name, info in data['dependencies'].items():
+        version = info if isinstance(info, str) else info.get('version')
+        tasks.append((name, version))
+
+def check_package(info):
+    name, version = info
+    res = sess.get('https://crates.io/api/v1/crates/{}'.format(name))
+    latest_version = res.json()['versions'][0]
+    if latest_version['yanked']:
+        print(name, 'was yanked')
+    elif not latest_version['num'].startswith(version):
+        print('{} is outdated ({}), {} is available'.format(name, version, latest_version['num']))
+
+pool = Pool()
+pool.map(check_package, tasks)