X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=daklib%2Futils.py;h=401712381674a2fb83c9ec71e6b3a7e3336972fe;hb=1a2f4f83246eb79711bb8f31d20712f120bac249;hp=12798ab260c3a7d330a76c982d19db011fd61d29;hpb=f51754fde4dbff16b7a6f708b7dbcd5fd120f0cc;p=dak.git

diff --git a/daklib/utils.py b/daklib/utils.py
index 12798ab2..40171238 100644
--- a/daklib/utils.py
+++ b/daklib/utils.py
@@ -49,7 +49,7 @@ import daklib.config as config
 import daklib.daksubprocess
 from dbconn import DBConn, get_architecture, get_component, get_suite, \
                    get_override_type, Keyring, session_wrapper, \
-                   get_active_keyring_paths, get_primary_keyring_path, \
+                   get_active_keyring_paths, \
                    get_suite_architectures, get_or_set_metadatakey, DBSource, \
                    Component, Override, OverrideType
 from sqlalchemy import desc
@@ -1301,3 +1301,27 @@ def check_reverse_depends(removals, suite, arches=None, session=None, cruft=Fals
             print
 
     return dep_problem
+
+################################################################################
+
+def parse_built_using(control):
+    """source packages referenced via Built-Using
+
+    @type  control: dict-like
+    @param control: control file to take Built-Using field from
+
+    @rtype:  list of (str, str)
+    @return: list of (source_name, source_version) pairs
+    """
+    built_using = control.get('Built-Using', None)
+    if built_using is None:
+        return []
+
+    bu = []
+    for dep in apt_pkg.parse_depends(built_using):
+        assert len(dep) == 1, 'Alternatives are not allowed in Built-Using field'
+        source_name, source_version, comp = dep[0]
+        assert comp == '=', 'Built-Using must contain strict dependencies'
+        bu.append((source_name, source_version))
+
+    return bu