add support for crates.io

nvchecker/get_version.py

@@ -5,7 +5,7 @@ logger = logging.getLogger(__name__)
 handler_precedence = (
   'github', 'gitcafe', 'aur', 'pypi', 'archpkg', 'gems', 'pacman',
   'cmd', 'bitbucket', 'gcode_hg', 'gcode_svn', 'regex', 'manual', 'vcs',
-  'npm', 'hackage', 'cpan', 'gitlab', 'packagist'
+  'cratesio', 'npm', 'hackage', 'cpan', 'gitlab', 'packagist'
 )
 
 def get_version(name, conf, callback):

nvchecker/source/cratesio.py

@@ -0,0 +1,22 @@
+import os
+import json
+from functools import partial
+
+from tornado.httpclient import AsyncHTTPClient, HTTPRequest
+
+from ..sortversion import sort_version_keys
+
+API_URL = 'https://crates.io/api/v1/crates/%s'
+
+def get_version(name, conf, callback):
+  name = conf.get('cratesio') or name
+  request = HTTPRequest(API_URL % name, user_agent='lilydjwg/nvchecker')
+  AsyncHTTPClient().fetch(
+    request,
+    callback = partial(_cratesio_done, name, callback),
+  )
+
+def _cratesio_done(name, callback, res):
+  data = json.loads(res.body.decode('utf-8'))
+  version = [v['num'] for v in data['versions'] if not v['yanked']][0]
+  callback(name, version)

tests/test_cratesio.py

@@ -0,0 +1,8 @@
+from tests.helper import ExternalVersionTestCase
+
+
+class CratesIOTest(ExternalVersionTestCase):
+    def test_npm(self):
+        self.assertEqual(
+            self.sync_get_version("example", {"cratesio": None}),
+            "0.1.0")