+
+################################################################################
+
+def cc_fix_changes (changes):
+ o = changes.get("architecture", "")
+ if o != "":
+ del changes["architecture"]
+ changes["architecture"] = {}
+ for j in string.split(o):
+ changes["architecture"][j] = 1
+
+# Sort by 'have source', by source name, by source version number, by filename
+
+def changes_compare (a, b):
+ try:
+ a_changes = parse_changes(a, 0)
+ except:
+ return -1;
+
+ try:
+ b_changes = parse_changes(b, 0)
+ except:
+ return 1;
+
+ cc_fix_changes (a_changes);
+ cc_fix_changes (b_changes);
+
+ # Sort by 'have source'
+
+ a_has_source = a_changes["architecture"].get("source")
+ b_has_source = b_changes["architecture"].get("source")
+ if a_has_source and not b_has_source:
+ return -1;
+ elif b_has_source and not a_has_source:
+ return 1;
+
+ # Sort by source name
+
+ a_source = a_changes.get("source");
+ b_source = b_changes.get("source");
+ q = cmp (a_source, b_source);
+ if q:
+ return q;
+
+ # Sort by source version
+
+ a_version = a_changes.get("version");
+ b_version = b_changes.get("version");
+ q = apt_pkg.VersionCompare(a_version, b_version);
+ if q:
+ return q
+
+ # Fall back to sort by filename
+
+ return cmp(a, b);
+
+################################################################################
+
+def find_next_free (dest, too_many=100):
+ extra = 0;
+ orig_dest = dest;
+ while os.path.exists(dest) and extra < too_many:
+ dest = orig_dest + '.' + repr(extra);
+ extra = extra + 1;
+ if extra >= too_many:
+ raise tried_too_hard_exc;
+ return dest;
+
+################################################################################
+
+def result_join (original, sep = '\t'):
+ list = [];
+ for i in xrange(len(original)):
+ if original[i] == None:
+ list.append("");
+ else:
+ list.append(original[i]);
+ return string.join(list, sep);
+
+################################################################################
+
+def get_conf():
+ return Cnf;
+
+################################################################################
+
+apt_pkg.init()
+
+Cnf = apt_pkg.newConfiguration();
+apt_pkg.ReadConfigFileISC(Cnf,default_config);
+
+if which_conf_file() != default_config:
+ apt_pkg.ReadConfigFileISC(Cnf,which_conf_file())
+
+################################################################################