Import libc++ 3.9.0

1 files changed, 51 insertions, 0 deletions

diff --git a/lib/libcxx/utils/sym_check/sym_match.py b/lib/libcxx/utils/sym_check/sym_match.py
new file mode 100755
index 00000000000..231bdc8b367
--- /dev/null
+++ b/lib/libcxx/utils/sym_check/sym_match.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is dual licensed under the MIT and the University of Illinois Open
+# Source Licenses. See LICENSE.TXT for details.
+#
+#===----------------------------------------------------------------------===##
+
+"""
+sym_match - Match all symbols in a list against a list of regexes.
+"""
+from argparse import ArgumentParser
+import sys
+from sym_check import util, match, extract
+
+
+def main():
+    parser = ArgumentParser(
+        description='Extract a list of symbols from a shared library.')
+    parser.add_argument(
+        '--blacklist', dest='blacklist',
+        type=str, action='store', default=None)
+    parser.add_argument(
+        'symbol_list', metavar='symbol_list', type=str,
+        help='The file containing the old symbol list')
+    parser.add_argument(
+        'regexes', metavar='regexes', default=[], nargs='*',
+        help='The file containing the new symbol list or a library')
+    args = parser.parse_args()
+
+    if not args.regexes and args.blacklist is None:
+        sys.stderr.write('Either a regex or a blacklist must be specified.\n')
+        sys.exit(1)
+    if args.blacklist:
+        search_list = util.read_blacklist(args.blacklist)
+    else:
+        search_list = args.regexes
+
+    symbol_list = util.extract_or_load(args.symbol_list)
+
+    matching_count, report = match.find_and_report_matching(
+        symbol_list, search_list)
+    sys.stdout.write(report)
+    if matching_count != 0:
+        print('%d matching symbols found...' % matching_count)
+
+
+if __name__ == '__main__':
+    main()