1 files changed, 79 insertions, 0 deletions
diff --git a/morphlib/plugins/get_chunk_details_plugin.py b/morphlib/plugins/get_chunk_details_plugin.py
new file mode 100644
index 00000000..842b4afe
--- /dev/null
+++ b/morphlib/plugins/get_chunk_details_plugin.py
@@ -0,0 +1,79 @@
+# Copyright (C) 2015  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import cliapp
+import morphlib
+
+class GetChunkDetailsPlugin(cliapp.Plugin):
+
+    def enable(self):
+        self.app.add_subcommand(
+            'get-chunk-details', self.get_chunk_details,
+            arg_synopsis='[STRATUM] CHUNK')
+
+    def disable(self):
+        pass
+
+    def get_chunk_details(self, args):
+        '''Print out details for the given chunk
+
+        Command line arguments:
+
+        * `STRATUM` is the stratum to search for chunk (optional).
+        * `CHUNK` is the component to obtain a URL for.
+
+        '''
+
+        stratum_name = None
+
+        if len(args) == 1:
+            chunk_name = args[0]
+        elif len(args) == 2:
+            stratum_name = args[0]
+            chunk_name = args[1]
+        else:
+            raise cliapp.AppException(
+                'Wrong number of arguments to get-chunk-details command '
+                '(see help)')
+
+        sb = morphlib.sysbranchdir.open_from_within('.')
+        loader = morphlib.morphloader.MorphologyLoader()
+
+        aliases = self.app.settings['repo-alias']
+        self.resolver = morphlib.repoaliasresolver.RepoAliasResolver(aliases)
+
+        found = 0
+        for morph in sb.load_all_morphologies(loader):
+            if morph['kind'] == 'stratum':
+                if (stratum_name == None or
+                        morph['name'] == stratum_name):
+                    for chunk in morph['chunks']:
+                        if chunk['name'] == chunk_name:
+                            found = found + 1
+                            self._print_chunk_details(chunk, morph)
+
+        if found == 0:
+            if stratum_name == None:
+                print('Chunk `{}` not found'
+                      .format(chunk_name))
+            else:
+                print('Chunk `{}` not found in stratum `{}`'
+                      .format(chunk_name, stratum_name))
+
+    def _print_chunk_details(self, chunk, morph):
+        repo = self.resolver.pull_url(chunk['repo'])
+        print('In stratum {}:'.format(morph['name']))
+        print('  Chunk: {}'.format(chunk['name']))
+        print('   Repo: {}'.format(repo))
+        print('    Ref: {}'.format(chunk['ref']))