sectracker.analyzers.bestversion(): new subroutine

git-svn-id: svn+ssh://svn.debian.org/svn/secure-testing@14769 e39458fd-73e7-0310-bf30-c45bca0a0e42

2 files changed, 28 insertions, 0 deletions

diff --git a/lib/python/sectracker/analyzers.py b/lib/python/sectracker/analyzers.py
index 814ae526da..af45bc005e 100644
--- a/lib/python/sectracker/analyzers.py
+++ b/lib/python/sectracker/analyzers.py
@@ -225,3 +225,27 @@ def fixedversions(bugdb, copysrc, versions, diag):
             result.append(Vulnerability(bug.header.name, pname,
                                         unstable_fixed, other_versions))
     return result
+
+def bestversion(config, codename, pkg, requested_members=None):
+    """Returns the source package with the highest version among the
+    requested sub-repository members."""
+    members = config.distributions[codename]["members"]
+    if requested_members is None:
+        names = members.values()
+    else:
+        names = [v for k, v in members.items() if k in requested_members]
+    fm = config.filemap()
+    bestver = None
+    bestpkg = None
+    for name, mems in members.items():
+        if requested_members is None or name in requested_members:
+            for mem in mems:
+                for comp in fm[mem].values():
+                    if pkg in comp:
+                        curpkg = comp[pkg]
+                        curver = curpkg.version
+                        if bestver is None or vercmp(curver, bestver) > 0:
+                            bestver = curver
+                            bestpkg = curpkg
+    return bestpkg
+
diff --git a/lib/python/sectracker_test/test_analyzers.py b/lib/python/sectracker_test/test_analyzers.py
index fe906c9428..880e58ad02 100644
--- a/lib/python/sectracker_test/test_analyzers.py
+++ b/lib/python/sectracker_test/test_analyzers.py
@@ -55,6 +55,10 @@ if False:
     for v in vdb:
         print v
 
+assert bestversion(c, "sid", "bash").name == "bash"
+assert bestversion(c, "sid", "bash", ("unsupported", "supported")).name \
+    == "bash"
+
 for err in diag.messages():
     print "%s:%d: %s: %s" % (err.file, err.line, err.level, err.message)
 assert not diag.messages()