Implement _list subcommand

3 files changed, 20 insertions, 2 deletions

diff --git a/distixlib/plugins/metadata_manipulation_plugin.py b/distixlib/plugins/metadata_manipulation_plugin.py
index f380ff2..b411dbb 100644
--- a/distixlib/plugins/metadata_manipulation_plugin.py
+++ b/distixlib/plugins/metadata_manipulation_plugin.py
@@ -18,6 +18,8 @@
 
 import cliapp
 
+import distixlib
+
 
 class MetadataManipulationPlugin(cliapp.Plugin):
 
@@ -30,3 +32,19 @@ class MetadataManipulationPlugin(cliapp.Plugin):
 
     def list(self, args):
         '''Show all key/value pairs in a metadata file.'''
+
+        for filename in args:
+            metadata = self._load_metadata(filename)
+            self._list_metadata(filename, metadata)
+
+    def _load_metadata(self, filename):
+        with open(filename) as f:
+            text = f.read()
+        serialiser = distixlib.MetadataSerialiser()
+        return serialiser.deserialise(text)
+
+    def _list_metadata(self, filename, metadata):
+        self.output.write('%s:\n' % filename)
+        for key in sorted(metadata.keys()):
+            for value in sorted(metadata.get_all_values(key)):
+                self.output.write('%s=%s\n' % (key, value))
diff --git a/setup.py b/setup.py
index f81df5e..5611737 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ class Check(Command):
                 stdout=None, stderr=None)
             os.remove('.coverage')
 
-        if self.yarns and got_yarn:
+        if self.yarns:
             cliapp.runcmd(['yarn'] + glob.glob('yarns/*.yarn'), stdout=None, stderr=None)
 
 
diff --git a/yarns/020-metadata-manipulation.yarn b/yarns/020-metadata-manipulation.yarn
index 550ae1b..fae77be 100644
--- a/yarns/020-metadata-manipulation.yarn
+++ b/yarns/020-metadata-manipulation.yarn
@@ -14,5 +14,5 @@ metadata file doesn't exist.
 
     WHEN user attempts to run distix _list METADATA
     THEN attempt failed
-    AND error message matches FIXME
+    AND error message matches No such file