85 lines
2.7 KiB
Python
85 lines
2.7 KiB
Python
#!/usr/bin/env python
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"""
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Script which takes one or more file paths and reports on their detected
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encodings
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Example::
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% chardetect somefile someotherfile
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somefile: windows-1252 with confidence 0.5
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someotherfile: ascii with confidence 1.0
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If no paths are provided, it takes its input from stdin.
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"""
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from __future__ import absolute_import, print_function, unicode_literals
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import argparse
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import sys
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from chardet import __version__
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from chardet.compat import PY2
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from chardet.universaldetector import UniversalDetector
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def description_of(lines, name='stdin'):
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"""
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Return a string describing the probable encoding of a file or
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list of strings.
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:param lines: The lines to get the encoding of.
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:type lines: Iterable of bytes
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:param name: Name of file or collection of lines
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:type name: str
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"""
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u = UniversalDetector()
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for line in lines:
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line = bytearray(line)
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u.feed(line)
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# shortcut out of the loop to save reading further - particularly useful if we read a BOM.
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if u.done:
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break
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u.close()
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result = u.result
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if PY2:
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name = name.decode(sys.getfilesystemencoding(), 'ignore')
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if result['encoding']:
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return '{0}: {1} with confidence {2}'.format(name, result['encoding'],
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result['confidence'])
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else:
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return '{0}: no result'.format(name)
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def main(argv=None):
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"""
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Handles command line arguments and gets things started.
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:param argv: List of arguments, as if specified on the command-line.
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If None, ``sys.argv[1:]`` is used instead.
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:type argv: list of str
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"""
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# Get command line arguments
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parser = argparse.ArgumentParser(
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description="Takes one or more file paths and reports their detected \
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encodings")
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parser.add_argument('input',
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help='File whose encoding we would like to determine. \
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(default: stdin)',
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type=argparse.FileType('rb'), nargs='*',
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default=[sys.stdin if PY2 else sys.stdin.buffer])
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parser.add_argument('--version', action='version',
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version='%(prog)s {0}'.format(__version__))
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args = parser.parse_args(argv)
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for f in args.input:
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if f.isatty():
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print("You are running chardetect interactively. Press " +
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"CTRL-D twice at the start of a blank line to signal the " +
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"end of your input. If you want help, run chardetect " +
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"--help\n", file=sys.stderr)
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print(description_of(f, f.name))
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if __name__ == '__main__':
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main()
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