Initial checkin of gRPC to third_party/

third_party/grpc/tools/distrib/check_copyright.py

Index: third_party/grpc/tools/distrib/check_copyright.py
diff --git a/third_party/grpc/tools/distrib/check_copyright.py b/third_party/grpc/tools/distrib/check_copyright.py
new file mode 100755
index 0000000000000000000000000000000000000000..99771f9632cfaa67728dafd15e4dda50350d6072
--- /dev/null
+++ b/third_party/grpc/tools/distrib/check_copyright.py
@@ -0,0 +1,179 @@
+#!/usr/bin/env python2.7
+
+# Copyright 2015-2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import argparse
+import datetime
+import os
+import re
+import sys
+import subprocess
+
+# find our home
+ROOT = os.path.abspath(
+    os.path.join(os.path.dirname(sys.argv[0]), '../..'))
+os.chdir(ROOT)
+
+# parse command line
+argp = argparse.ArgumentParser(description='copyright checker')
+argp.add_argument('-o', '--output',
+                  default='details',
+                  choices=['list', 'details'])
+argp.add_argument('-s', '--skips',
+                  default=0,
+                  action='store_const',
+                  const=1)
+argp.add_argument('-a', '--ancient',
+                  default=0,
+                  action='store_const',
+                  const=1)
+argp.add_argument('-f', '--fix',
+                  default=False,
+                  action='store_true');
+argp.add_argument('--precommit',
+                  default=False,
+                  action='store_true')
+args = argp.parse_args()
+
+# open the license text
+with open('LICENSE') as f:
+  LICENSE = f.read().splitlines()
+
+# license format by file extension
+# key is the file extension, value is a format string
+# that given a line of license text, returns what should
+# be in the file
+LICENSE_PREFIX = {
+  '.c':         r'\s*(?://|\*)\s*',
+  '.cc':        r'\s*(?://|\*)\s*',
+  '.h':         r'\s*(?://|\*)\s*',
+  '.m':         r'\s*\*\s*',
+  '.php':       r'\s*\*\s*',
+  '.js':        r'\s*\*\s*',
+  '.py':        r'#\s*',
+  '.pyx':       r'#\s*',
+  '.pxd':       r'#\s*',
+  '.pxi':       r'#\s*',
+  '.rb':        r'#\s*',
+  '.sh':        r'#\s*',
+  '.proto':     r'//\s*',
+  '.cs':        r'//\s*',
+  '.mak':       r'#\s*',
+  'Makefile':   r'#\s*',
+  'Dockerfile': r'#\s*',
+  'LICENSE':    '',
+}
+
+KNOWN_BAD = set([
+  'src/php/tests/bootstrap.php',
+])
+
+
+RE_YEAR = r'Copyright (?P<first_year>[0-9]+\-)?(?P<last_year>[0-9]+), Google Inc\.'
+RE_LICENSE = dict(
+    (k, r'\n'.join(
+        LICENSE_PREFIX[k] +
+        (RE_YEAR if re.search(RE_YEAR, line) else re.escape(line))
+        for line in LICENSE))
+     for k, v in LICENSE_PREFIX.iteritems())
+
+if args.precommit:
+  FILE_LIST_COMMAND = 'git diff --name-only HEAD | grep -v ^third_party/'
+else:
+  FILE_LIST_COMMAND = 'git ls-tree -r --name-only -r HEAD | grep -v ^third_party/'
+
+def load(name):
+  with open(name) as f:
+    return f.read()
+
+def save(name, text):
+  with open(name, 'w') as f:
+    f.write(text)
+
+assert(re.search(RE_LICENSE['LICENSE'], load('LICENSE')))
+assert(re.search(RE_LICENSE['Makefile'], load('Makefile')))
+
+
+def log(cond, why, filename):
+  if not cond: return
+  if args.output == 'details':
+    print '%s: %s' % (why, filename)
+  else:
+    print filename
+
+
+# scan files, validate the text
+ok = True
+filename_list = []
+try:
+  filename_list = subprocess.check_output(FILE_LIST_COMMAND,
+                                          shell=True).splitlines()
+except subprocess.CalledProcessError:
+  sys.exit(0)
+
+for filename in filename_list:
+  if filename in KNOWN_BAD: continue
+  ext = os.path.splitext(filename)[1]
+  base = os.path.basename(filename)
+  if ext in RE_LICENSE:
+    re_license = RE_LICENSE[ext]
+  elif base in RE_LICENSE:
+    re_license = RE_LICENSE[base]
+  else:
+    log(args.skips, 'skip', filename)
+    continue
+  try:
+    text = load(filename)
+  except:
+    continue
+  m = re.search(re_license, text)
+  if m:
+    gdict = m.groupdict()
+    last_modified = int(subprocess.check_output('git log -1 --format="%ad" --date=short -- ' + filename, shell=True)[0:4])
+    latest_claimed = int(gdict['last_year'])
+    if last_modified > latest_claimed:
+      print '%s modified %d but copyright only extends to %d' % (filename, last_modified, latest_claimed)
+      ok = False
+      if args.fix:
+        span_start, span_end = m.span(2)
+        if not gdict['first_year']:
+          # prepend the old year to the current one.
+          text = '{}-{}{}'.format(text[:span_end], last_modified, text[span_end:])
+        else:  # already a year range
+          # simply update the last year
+          text = '{}{}{}'.format(text[:span_start], last_modified, text[span_end:])
+        save(filename, text)
+        print 'Fixed!'
+        ok = True
+  elif 'DO NOT EDIT' not in text and 'AssemblyInfo.cs' not in filename and filename != 'src/boringssl/err_data.c':
+    log(1, 'copyright missing', filename)
+    ok = False
+
+sys.exit(0 if ok else 1)