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