Issue 5996 - Release consistent versions across WebExtensions

packager.py

 # 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/.
 
 # Note: These are the base functions common to all packagers, the actual
 # packagers are implemented in packagerChrome and packagerEdge.
 
 import sys
 import os
 import re
 import subprocess
 import json
 import zipfile
 from StringIO import StringIO
 from chainedconfigparser import ChainedConfigParser
 
 import buildtools
 
+EXTENSIONS = {
+    'edge': 'appx',
+    'gecko': 'xpi',
+    'chrome': {'unsigned': 'zip', 'signed': 'crx'},
+}
+
 
 def getDefaultFileName(metadata, version, ext):
     return '%s-%s.%s' % (metadata.get('general', 'basename'), version, ext)
 
 
+def get_extension(platform, has_key_file=False):
+    extension = EXTENSIONS[platform]
+
+    try:
+        if has_key_file:
+            key = 'signed'
+        else:
+            key = 'unsigned'
+        extension = extension[key]
+    except (KeyError, TypeError):
+        pass
+
+    return extension
+
+
 def getMetadataPath(baseDir, type):
     return os.path.join(baseDir, 'metadata.%s' % type)
 
 
 def getDevEnvPath(baseDir, type):
     return os.path.join(baseDir, 'devenv.' + type)
 
 
 def readMetadata(baseDir, type):
     parser = ChainedConfigParser()
@@ skipping 101 matching lines @@
 
     def zip(self, outFile, sortKey=None, compression=zipfile.ZIP_DEFLATED):
         with zipfile.ZipFile(outFile, 'w', compression) as zf:
             for name in sorted(self, key=sortKey):
                 zf.writestr(name, self[name])
 
     def zipToString(self, sortKey=None):
         buffer = StringIO()
         self.zip(buffer, sortKey=sortKey)
         return buffer.getvalue()