1 files changed, 47 insertions, 0 deletions
diff --git a/browser/app/macversion.py b/browser/app/macversion.py
new file mode 100644
index 0000000000..3d9aaaa94a
--- /dev/null
+++ b/browser/app/macversion.py
@@ -0,0 +1,47 @@
+#!/usr/bin/python
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import absolute_import, print_function, unicode_literals
+import io
+from optparse import OptionParser
+import sys
+import re
+
+o = OptionParser()
+o.add_option("--buildid", dest="buildid")
+o.add_option("--version", dest="version")
+
+(options, args) = o.parse_args()
+
+if not options.buildid:
+    print("--buildid is required", file=sys.stderr)
+    sys.exit(1)
+
+if not options.version:
+    print("--version is required", file=sys.stderr)
+    sys.exit(1)
+
+# We want to build a version number that matches the format allowed for
+# CFBundleVersion (nnnnn[.nn[.nn]]). We'll incorporate both the version
+# number as well as the date, so that it changes at least daily (for nightly
+# builds), but also so that newly-built older versions (e.g. beta build) aren't
+# considered "newer" than previously-built newer versions (e.g. a trunk nightly)
+
+define, MOZ_BUILDID, buildid = (
+    io.open(options.buildid, "r", encoding="utf-8").read().split()
+)
+
+# extract only the major version (i.e. "14" from "14.0b1")
+majorVersion = re.match(r"^(\d+)[^\d].*", options.version).group(1)
+# last two digits of the year
+twodigityear = buildid[2:4]
+month = buildid[4:6]
+if month[0] == "0":
+    month = month[1]
+day = buildid[6:8]
+if day[0] == "0":
+    day = day[1]
+
+print("%s.%s.%s" % (majorVersion + twodigityear, month, day))