Implement get_build_info and get_nothing_provides

1 files changed, 20 insertions, 0 deletions

diff --git a/obsapi/core.py b/obsapi/core.py
index f1a27ed..e46e57f 100644
--- a/obsapi/core.py
+++ b/obsapi/core.py
@@ -351,6 +351,26 @@ class ObsApi(object):
         api = '/build/{}/{}/_buildconfig'.format(prj, repo)
         return self.get_xml(api)
 
+    def get_build_info(self, prj, pkg, repo, arch):
+        api = '/build/{}/{}/{}/{}/_buildinfo'.format(prj, repo, arch, pkg)
+        return self.get_xml(api)
+
+    def get_nothing_provides(self, prj, pkg, repo, arch):
+        tree = etree.fromstring(self.get_build_info(prj, pkg, repo, arch))
+        errors = (tree.xpath('error') or [EMPTY])[0]
+        nothing_provides = []
+
+        if errors is None or 'unresolvable' not in errors:
+            return nothing_provides
+
+        for unresolvable in [u.strip() for
+                             u in errors.split('unresolvable:')[1].split(',')]:
+            if unresolvable.startswith('nothing provides'):
+                nothing_provides.append(unresolvable.split(
+                                        'nothing provides ')[1])
+
+        return nothing_provides
+
     def get_vendor(self, prj, repo=None):
         ''' Attempt to get the value of the %vendor macro if exists
         Search build configs from all repos. Take first occurance.