Fix creating __generated_config on Windows
llvm-svn: 290853
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 887894aaef8fe7b436d48dd825dbcf5dfd4cf3ad
diff --git a/utils/cat_files.py b/utils/cat_files.py
new file mode 100755
index 0000000..83e7632
--- /dev/null
+++ b/utils/cat_files.py
@@ -0,0 +1,46 @@
+#!/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.
+#
+#===----------------------------------------------------------------------===##
+
+from argparse import ArgumentParser
+import sys
+
+def print_and_exit(msg):
+ sys.stderr.write(msg + '\n')
+ sys.exit(1)
+
+def main():
+ parser = ArgumentParser(
+ description="Concatenate two files into a single file")
+ parser.add_argument(
+ '-o', '--output', dest='output', required=True,
+ help='The output file. stdout is used if not given',
+ type=str, action='store')
+ parser.add_argument(
+ 'files', metavar='files', nargs='+',
+ help='The files to concatenate')
+
+ args = parser.parse_args()
+
+ if len(args.files) < 2:
+ print_and_exit('fewer than 2 inputs provided')
+ data = ''
+ for filename in args.files:
+ with open(filename, 'r') as f:
+ data += f.read()
+ if len(data) != 0 and data[-1] != '\n':
+ data += '\n'
+ assert len(data) > 0 and "cannot cat empty files"
+ with open(args.output, 'w') as f:
+ f.write(data)
+
+
+if __name__ == '__main__':
+ main()
+ sys.exit(0)