Start libc++ python cleanup and consolidation.
Libc++ frequently creates and uses utilities written in python.
Currently there are python modules under both libcxx/test and
libcxx/util. My goal with these changes is to consolidate them
into a single package under libcxx/utils/libcxx.
llvm-svn: 294644
diff --git a/libcxx/utils/sym_diff.py b/libcxx/utils/sym_diff.py
new file mode 100755
index 0000000..c01f71c
--- /dev/null
+++ b/libcxx/utils/sym_diff.py
@@ -0,0 +1,73 @@
+#!/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_diff - Compare two symbol lists and output the differences.
+"""
+
+from argparse import ArgumentParser
+import sys
+from libcxx.sym_check import diff, util
+
+
+def main():
+ parser = ArgumentParser(
+ description='Extract a list of symbols from a shared library.')
+ parser.add_argument(
+ '--names-only', dest='names_only',
+ help='Only print symbol names',
+ action='store_true', default=False)
+ parser.add_argument(
+ '--removed-only', dest='removed_only',
+ help='Only print removed symbols',
+ action='store_true', default=False)
+ parser.add_argument('--only-stdlib-symbols', dest='only_stdlib',
+ help="Filter all symbols not related to the stdlib",
+ action='store_true', default=False)
+ parser.add_argument('--strict', dest='strict',
+ help="Exit with a non-zero status if any symbols "
+ "differ",
+ action='store_true', default=False)
+ parser.add_argument(
+ '-o', '--output', dest='output',
+ help='The output file. stdout is used if not given',
+ type=str, action='store', default=None)
+ parser.add_argument(
+ '--demangle', dest='demangle', action='store_true', default=False)
+ parser.add_argument(
+ 'old_syms', metavar='old-syms', type=str,
+ help='The file containing the old symbol list or a library')
+ parser.add_argument(
+ 'new_syms', metavar='new-syms', type=str,
+ help='The file containing the new symbol list or a library')
+ args = parser.parse_args()
+
+ old_syms_list = util.extract_or_load(args.old_syms)
+ new_syms_list = util.extract_or_load(args.new_syms)
+
+ if args.only_stdlib:
+ old_syms_list, _ = util.filter_stdlib_symbols(old_syms_list)
+ new_syms_list, _ = util.filter_stdlib_symbols(new_syms_list)
+
+ added, removed, changed = diff.diff(old_syms_list, new_syms_list)
+ if args.removed_only:
+ added = {}
+ report, is_break, is_different = diff.report_diff(
+ added, removed, changed, names_only=args.names_only,
+ demangle=args.demangle)
+ if args.output is None:
+ print(report)
+ else:
+ with open(args.output, 'w') as f:
+ f.write(report + '\n')
+ exit_code = 1 if is_break or (args.strict and is_different) else 0
+ sys.exit(exit_code)
+
+if __name__ == '__main__':
+ main()
