Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/pyaml/__main__.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # -*- coding: utf-8 -*-
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2
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3 import os, sys, stat, tempfile, contextlib, yaml, pyaml
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4
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5
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6 @contextlib.contextmanager
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7 def safe_replacement(path, *open_args, **open_kws):
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8 path = str(path)
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9 try: mode = stat.S_IMODE(os.stat(path).st_mode)
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10 except (OSError, IOError): mode = None
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11 open_kws.update( delete=False,
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12 dir=os.path.dirname(path), prefix=os.path.basename(path)+'.' )
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13 with tempfile.NamedTemporaryFile(*open_args, **open_kws) as tmp:
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14 try:
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15 if mode is not None: os.fchmod(tmp.fileno(), mode)
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16 yield tmp
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17 if not tmp.closed: tmp.flush()
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18 os.rename(tmp.name, path)
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19 finally:
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20 try: os.unlink(tmp.name)
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21 except (OSError, IOError): pass
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22
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23
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24 def main(argv=None):
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25 import argparse
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26 parser = argparse.ArgumentParser(
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27 description='Process and dump prettified YAML to stdout.')
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28 parser.add_argument('path', nargs='?', metavar='path',
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29 help='Path to YAML to read (default: use stdin).')
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30 parser.add_argument('-r', '--replace', action='store_true',
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31 help='Replace specified path with prettified version in-place.')
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32 parser.add_argument('-w', '--width', type=int, metavar='chars',
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33 help='Max line width hint to pass to pyyaml for the dump.'
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34 ' Only used to format scalars and collections (e.g. lists).')
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35 opts = parser.parse_args(argv or sys.argv[1:])
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36
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37 src = open(opts.path) if opts.path else sys.stdin
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38 try: data = yaml.safe_load(src)
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39 finally: src.close()
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40
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41 pyaml_kwargs = dict()
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42 if opts.width: pyaml_kwargs['width'] = opts.width
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43 if opts.replace and opts.path:
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44 with safe_replacement(opts.path) as tmp:
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45 pyaml.pprint(data, file=tmp, **pyaml_kwargs)
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46 else: pyaml.pprint(data, **pyaml_kwargs)
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47
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48 if __name__ == '__main__': sys.exit(main())