Add support for Packagist (Composer)

README.rst

@@ -31,6 +31,7 @@ Contents
   * `Check NPM Registry <#check-npm-registry>`_
   * `Check Hackage <#check-hackage>`_
   * `Check CPAN <#check-cpan>`_
+  * `Check Packagist <#check-packagist>`_
   * `Check Local Pacman Database <#check-local-pacman-database>`_
   * `Check Arch Linux official packages <#check-arch-linux-official-packages>`_
   * `Check Google Code (hg repository) <#check-google-code-hg-repository>`_
@@ -258,6 +259,13 @@ Check `MetaCPAN <https://metacpan.org/>`_ for updates.
 cpan
   The name used on CPAN, e.g. ``YAML``.
 
+Check Packagist
+--------------
+Check `Packagist <https://packagist.org/>`_ for updates.
+
+packagist
+  The name used on Packagist, e.g. ``monolog/monolog``.
+
 Check Local Pacman Database
 ---------------------------
 This is used when you run ``nvchecker`` on an Arch Linux system and the program always keeps up with a package in your configured repositories for `Pacman`_.

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',
+  'npm', 'hackage', 'cpan', 'gitlab', 'packagist'
 )
 
 def get_version(name, conf, callback):

nvchecker/source/packagist.py

@@ -0,0 +1,15 @@
+from .simple_json import simple_json
+
+PACKAGIST_URL = 'https://packagist.org/packages/%s.json'
+
+def _version_from_json(data):
+  data = {version: details for version, details in data["package"]['versions'].items() if version != "dev-master"}
+
+  if len(data):
+    return max(data, key=lambda version: data[version]["time"])
+
+get_version = simple_json(
+  PACKAGIST_URL,
+  'packagist',
+  _version_from_json,
+)

tests/test_packagist.py

@@ -0,0 +1,6 @@
+from tests.helper import ExternalVersionTestCase
+
+
+class PackagistTest(ExternalVersionTestCase):
+    def test_packagist(self):
+        self.assertEqual(self.sync_get_version("butterfly/example-web-application", {"packagist": None}), "1.2.0")