ADD: added new version of protobuf

libs/protobuf/update_compatibility_version.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+"""Compatibility tests between last released and the current version.
+
+Usage: ./update_compatibility_version.py <MAJOR>.<MINOR>.<MICRO> [<RC version>]
+Example: ./update_compatibility_version.py 3.7.1
+"""
+
+from __future__ import print_function
+import re
+import sys
+
+if len(sys.argv) < 2 or len(sys.argv) > 3:
+  print("""
+[ERROR] Please specify a version.
+
+./update_compatibility_version.py.py <MAJOR>.<MINOR>.<MICRO> [<RC version>]
+
+Example:
+./update_compatibility_version.py.py 3.7.1 2
+""")
+  exit(1)
+
+NEW_VERSION = sys.argv[1]
+NEW_VERSION_INFO = NEW_VERSION.split('.')
+if len(NEW_VERSION_INFO) != 3:
+  print("""
+[ERROR] Version must be in the format <MAJOR>.<MINOR>.<MICRO>
+
+Example:
+./update_compatibility_version.py.py 3.7.3
+""")
+  exit(1)
+
+if len(sys.argv) > 2:
+  RC_VERSION = int(sys.argv[2])
+  # Do not update compatibility versions for rc release
+  if RC_VERSION != 0:
+    exit(0)
+
+
+def RewriteTextFile(filename, line_rewriter):
+  lines = open(filename, 'r').readlines()
+  updated_lines = []
+  for line in lines:
+    updated_lines.append(line_rewriter(line))
+  if lines == updated_lines:
+    print('%s was not updated. Please double check.' % filename)
+  f = open(filename, 'w')
+  f.write(''.join(updated_lines))
+  f.close()
+
+
+def ReplaceVersion(line):
+  return re.sub(r'LAST_RELEASED=.*$', 'LAST_RELEASED=%s' % NEW_VERSION, line)
+
+RewriteTextFile('tests.sh', ReplaceVersion)