From 598e6644eb1cf3ebfc796a96df8488629a1fdc35 Mon Sep 17 00:00:00 2001
From: Ken Dreyer <kdreyer@redhat.com>
Date: Jul 31 2017 21:03:31 +0000
Subject: list: refactor sorting composes to a separate method


This sorting logic is useful enough to embed in other applications.
Split up the "sorting" from the "printing", introducing a new
sorted_ids() method that simply returns a list of sorted compose ID
strings.

---

diff --git a/compose_utils/list.py b/compose_utils/list.py
index 3b47529..0422dfa 100644
--- a/compose_utils/list.py
+++ b/compose_utils/list.py
@@ -64,14 +64,22 @@ def load_composes(path, name=None, short=None, version=None, ctype=None, status=
     return composes
 
 
-def print_sorted(composes):
-    """Print all composes sorted by their release name, release version,
-    compose date and respin.
+def sorted_ids(composes):
+    """Sort composes by their release name, release version, compose date and
+    respin, and return the list of IDs.
     """
+    result = []
     for release in sorted(composes):
         for version in sorted(composes[release], key=version_sort):
             for compose in sorted(composes[release][version], key=compose_sort):
-                print(compose.info.compose.id)
+                result.append(compose.info.compose.id)
+    return result
+
+
+def print_sorted(composes):
+    """Print all sorted compose IDs. """
+    for compose_id in sorted_ids(composes):
+        print(compose_id)
 
 
 def check_single_line(composes):