[usb_gadget p08] Package the USB gadget framework for easy distribution.

tools/usb_gadget/package.py

Index: tools/usb_gadget/package.py
diff --git a/tools/usb_gadget/package.py b/tools/usb_gadget/package.py
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+++ b/tools/usb_gadget/package.py
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+#!/usr/bin/python
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utility to package the USB gadget framework.
+"""
+
+import argparse
+import hashlib
+import os
+import StringIO
+import zipfile
+
+
+def MakeZip(directory=None, files=None):
+  """Construct a zip file.
+
+  Args:
+    directory: Include Python source files from this directory
+    files: Include these files
+
+  Returns:
+    A tuple of the buffer containing the zip file and its MD5 hash.
+  """
+  buf = StringIO.StringIO()
+  archive = zipfile.PyZipFile(buf, 'w')
+  if directory is not None:
+    archive.writepy(directory)
+  if files is not None:
+    for f in files:
+      archive.write(f, os.path.basename(f))
+  archive.close()
+  content = buf.getvalue()
+  buf.close()
+  md5 = hashlib.md5(content).hexdigest()
+  return content, md5
+
+
+def main():
+  parser = argparse.ArgumentParser(
+      description='Package (and upload) the USB gadget framework.')
+  parser.add_argument(
+      '--dir', type=str, metavar='DIR',
+      help='package all Python files from DIR')
+  parser.add_argument(
+      '--zip-file', type=str, metavar='FILE',
+      help='save package as FILE')
+  parser.add_argument(
+      '--hash-file', type=str, metavar='FILE',
+      help='save package hash as FILE')
+  parser.add_argument(
+      'files', metavar='FILE', type=str, nargs='*',
+      help='source files')
+
+  args = parser.parse_args()
+
+  content, md5 = MakeZip(directory=args.dir, files=args.files)
+  if args.zip_file:
+    with open(args.zip_file, 'w') as zip_file:
+      zip_file.write(content)
+  if args.hash_file:
+    with open(args.hash_file, 'w') as hash_file:
+      hash_file.write(md5)
+
+
+if __name__ == '__main__':
+  main()