# HG changeset patch
# User Éric Araujo <merwok@netwok.org>
# Parent fc263035cfaef6046c6ca82e2212397a7c8eadb5

$ py24 setup.py check
running check
warning: check: missing required metadata: Version, Home-page

$ py24 setup.py check
running check
warning: check: missing required metadata: version, home_page

diff --git a/src/distutils2/command/check.py b/src/distutils2/command/check.py
--- a/src/distutils2/command/check.py
+++ b/src/distutils2/command/check.py
@@ -60,7 +60,7 @@ class check(Command):
 
         Warns if any are missing.
         """
-        missing, __ = self.distribution.metadata.check()
+        missing, __ = self.distribution.metadata.check(attr_style=True)
         if missing != []:
             self.warn("missing required meta-data: %s"  % ', '.join(missing))
 
diff --git a/src/distutils2/metadata.py b/src/distutils2/metadata.py
--- a/src/distutils2/metadata.py
+++ b/src/distutils2/metadata.py
@@ -167,6 +167,8 @@ _ATTR2FIELD = {'metadata_version': 'Meta
         'project_url': 'Project-URL',
         }
 
+_FIELD2ATTR = dict((field, attr) for (attr, field) in _ATTR2FIELD.iteritems()
+
 _PREDICATE_FIELDS = ('Requires-Dist', 'Obsoletes-Dist', 'Provides-Dist')
 _VERSIONS_FIELDS = ('Requires-Python',)
 _VERSION_FIELDS = ('Version',)
@@ -402,25 +404,34 @@ class DistributionMetadata(object):
             return None
         return value
 
-    def check(self):
-        """Checks if the metadata are compliant."""
+    def check(self, attr_style=False):
+        """Checks if the metadata is compliant.
+
+        Return (list of missing metadata fields, list of warnings). If
+        *attr_style* is true, field names will use the same spelling used for
+        DistributionMetadata attributes (a.k.a. distutils2.core.setup keyword
+        arguments), i.e home_page instead of Home-page.
+        """
         # XXX should check the versions (if the file was loaded)
-        missing = []
+        missing, warnings = [], []
+
+        if attr_style:
+            getname = _FIELD2ATTR.__getitem__
+        else:
+            getname = lambda field: field
+
         for attr in ('Name', 'Version', 'Home-page'):
             value = self[attr]
             if value == 'UNKNOWN':
-                missing.append(attr)
+                missing.append(getname(attr))
 
         if _HAS_DOCUTILS:
-            warnings = self._check_rst_data(self['Description'])
-        else:
-            warnings = []
+            warnings.extend(self._check_rst_data(self['Description']))
 
         # checking metadata 1.2 (XXX needs to check 1.1, 1.0)
         if self['Metadata-Version'] != '1.2':
             return missing, warnings
 
-
         def is_valid_predicates(value):
             for v in value:
                 if not is_valid_predicate(v.split(';')[0]):
@@ -437,7 +448,7 @@ class DistributionMetadata(object):
 
                 if not controller(value):
                     warnings.append('Wrong value for "%s": %s' \
-                            % (field, value))
+                            % (getname(field), value))
 
         return missing, warnings