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7bfaa0f09d
This is an ongoing series of commits that are reformatting our Python code. Reformatting is done with `black`. If you end up having problems merging this commit because you have made changes to a python file, the best way to handle that is to run git checkout --ours <yourfile> and then reformat it with black. If you run into any problems, post to discourse about it and we will try to help. RFC Thread below: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Reviewed By: #libc, kwk, Mordante Differential Revision: https://reviews.llvm.org/D150763
52 lines
1.4 KiB
Python
Executable File
52 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python
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# ===----------------------------------------------------------------------===##
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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# ===----------------------------------------------------------------------===##
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from argparse import ArgumentParser
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import sys
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def print_and_exit(msg):
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sys.stderr.write(msg + "\n")
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sys.exit(1)
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def main():
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parser = ArgumentParser(description="Concatenate two files into a single file")
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parser.add_argument(
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"-o",
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"--output",
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dest="output",
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required=True,
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help="The output file. stdout is used if not given",
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type=str,
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action="store",
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)
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parser.add_argument(
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"files", metavar="files", nargs="+", help="The files to concatenate"
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)
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args = parser.parse_args()
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if len(args.files) < 2:
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print_and_exit("fewer than 2 inputs provided")
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data = ""
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for filename in args.files:
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with open(filename, "r") as f:
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data += f.read()
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if len(data) != 0 and data[-1] != "\n":
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data += "\n"
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assert len(data) > 0 and "cannot cat empty files"
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with open(args.output, "w") as f:
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f.write(data)
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if __name__ == "__main__":
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main()
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sys.exit(0)
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