|
|
""" |
|
|
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. |
|
|
|
|
|
""" |
|
|
|
|
|
|
|
|
import argparse |
|
|
import sys |
|
|
|
|
|
from .. import __version__ |
|
|
from ..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) |
|
|
|
|
|
if u.done: |
|
|
break |
|
|
u.close() |
|
|
result = u.result |
|
|
if result["encoding"]: |
|
|
return f'{name}: {result["encoding"]} with confidence {result["confidence"]}' |
|
|
return f"{name}: no result" |
|
|
|
|
|
|
|
|
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 |
|
|
""" |
|
|
|
|
|
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.buffer], |
|
|
) |
|
|
parser.add_argument( |
|
|
"--version", action="version", version=f"%(prog)s {__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() |
|
|
|
