87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
"""
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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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import argparse
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import sys
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from .. import __version__
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from ..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 result["encoding"]:
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return f'{name}: {result["encoding"]} with confidence {result["confidence"]}'
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return f"{name}: no result"
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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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)
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parser.add_argument(
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"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"),
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nargs="*",
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default=[sys.stdin.buffer],
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)
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parser.add_argument(
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"--version", action="version", version=f"%(prog)s {__version__}"
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)
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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(
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"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",
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file=sys.stderr,
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)
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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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