.. contents:: pathvalidate :backlinks: top :depth: 2

Summary

pathvalidate <https://github.com/thombashi/pathvalidate>__ is a Python library to sanitize/validate a string such as filenames/file-paths/etc.

.. image:: https://badge.fury.io/py/pathvalidate.svg :target: https://badge.fury.io/py/pathvalidate :alt: PyPI package version

.. image:: https://anaconda.org/thombashi/pathvalidate/badges/version.svg :target: https://anaconda.org/thombashi/pathvalidate :alt: conda package version

.. image:: https://img.shields.io/pypi/pyversions/pathvalidate.svg :target: https://pypi.org/project/pathvalidate :alt: Supported Python versions

.. image:: https://img.shields.io/pypi/implementation/pathvalidate.svg :target: https://pypi.org/project/pathvalidate :alt: Supported Python implementations

.. image:: https://github.com/thombashi/pathvalidate/workflows/Tests/badge.svg :target: https://github.com/thombashi/pathvalidate/actions?query=workflow%3ATests :alt: Linux/macOS/Windows CI status

.. image:: https://coveralls.io/repos/github/thombashi/pathvalidate/badge.svg?branch=master :target: https://coveralls.io/github/thombashi/pathvalidate?branch=master :alt: Test coverage: coveralls

.. image:: https://github.com/thombashi/pathvalidate/actions/workflows/github-code-scanning/codeql/badge.svg :target: https://github.com/thombashi/pathvalidate/actions/workflows/github-code-scanning/codeql :alt: CodeQL

Features

• Sanitize/Validate a string as a:
  • file name
  • file path
• Sanitize will do:
  • Remove invalid characters for a target platform
  • Replace reserved names for a target platform
  • Normalize
  • Remove unprintable characters
• Argument validator/sanitizer for argparse and click
• Multi platform support:
  • Linux
  • Windows
  • macOS
  • POSIX
  • universal (platform independent)
• Multibyte character support

Examples

Sanitize a filename

:Sample Code: .. code-block:: python

    from pathvalidate import sanitize_filename

    fname = "fi:l*e/p\"a?t>h|.t<xt"
    print(f"{fname} -> {sanitize_filename(fname)}\n")

    fname = "\0_a*b:c<d>e%f/(g)h+i_0.txt"
    print(f"{fname} -> {sanitize_filename(fname)}\n")

:Output: .. code-block::

    fi:l*e/p"a?t>h|.t<xt -> filepath.txt

    _a*b:c<d>e%f/(g)h+i_0.txt -> _abcde%f(g)h+i_0.txt

The default target platform is universal. i.e. the sanitized file name is valid for any platform.

Sanitize a filepath

:Sample Code: .. code-block:: python

    from pathvalidate import sanitize_filepath

    fpath = "fi:l*e/p\"a?t>h|.t<xt"
    print(f"{fpath} -> {sanitize_filepath(fpath)}\n")

    fpath = "\0_a*b:c<d>e%f/(g)h+i_0.txt"
    print(f"{fpath} -> {sanitize_filepath(fpath)}\n")

:Output: .. code-block::

    fi:l*e/p"a?t>h|.t<xt -> file/path.txt

    _a*b:c<d>e%f/(g)h+i_0.txt -> _abcde%f/(g)h+i_0.txt

Validate a filename

:Sample Code: .. code-block:: python

    import sys
    from pathvalidate import ValidationError, validate_filename

    try:
        validate_filename("fi:l*e/p\"a?t>h|.t<xt")
    except ValidationError as e:
        print(f"{e}\n", file=sys.stderr)

    try:
        validate_filename("COM1")
    except ValidationError as e:
        print(f"{e}\n", file=sys.stderr)

:Output: .. code-block::

    [PV1100] invalid characters found: platform=universal, description=invalids=('/'), value='fi:l*e/p"a?t>h|.t<xt'

    [PV1002] found a reserved name by a platform: 'COM1' is a reserved name, platform=universal, reusable_name=False

Check a filename

:Sample Code: .. code-block:: python

    from pathvalidate import is_valid_filename, sanitize_filename

    fname = "fi:l*e/p\"a?t>h|.t<xt"
    print(f"is_valid_filename('{fname}') return {is_valid_filename(fname)}\n")

    sanitized_fname = sanitize_filename(fname)
    print(f"is_valid_filename('{sanitized_fname}') return {is_valid_filename(sanitized_fname)}\n")

:Output: .. code-block::

    is_valid_filename('fi:l*e/p"a?t>h|.t<xt') return False

    is_valid_filename('filepath.txt') return True

filename/filepath validator for argparse

:Sample Code: .. code-block:: python

    from argparse import ArgumentParser

    from pathvalidate.argparse import validate_filename_arg, validate_filepath_arg

    parser = ArgumentParser()
    parser.add_argument("--filename", type=validate_filename_arg)
    parser.add_argument("--filepath", type=validate_filepath_arg)
    options = parser.parse_args()

    if options.filename:
        print(f"filename: {options.filename}")

    if options.filepath:
        print(f"filepath: {options.filepath}")

:Output: .. code-block::

    $ ./examples/argparse_validate.py --filename eg
    filename: eg
    $ ./examples/argparse_validate.py --filename e?g
    usage: argparse_validate.py [-h] [--filename FILENAME] [--filepath FILEPATH]
    argparse_validate.py: error: argument --filename: [PV1100] invalid characters found: invalids=(':'), value='e:g', platform=Windows

.. note:: validate_filepath_arg consider platform as of "auto" if the input is an absolute file path.

filename/filepath sanitizer for argparse

:Sample Code: .. code-block:: python

    from argparse import ArgumentParser

    from pathvalidate.argparse import sanitize_filename_arg, sanitize_filepath_arg


    parser = ArgumentParser()
    parser.add_argument("--filename", type=sanitize_filename_arg)
    parser.add_argument("--filepath", type=sanitize_filepath_arg)
    options = parser.parse_args()

    if options.filename:
        print("filename: {}".format(options.filename))

    if options.filepath:
        print("filepath: {}".format(options.filepath))

:Output: .. code-block::

    $ ./examples/argparse_sanitize.py --filename e/g
    filename: eg

.. note:: sanitize_filepath_arg is set platform as "auto".

filename/filepath validator for click

:Sample Code: .. code-block:: python

    import click

    from pathvalidate.click import validate_filename_arg, validate_filepath_arg


    @click.command()
    @click.option("--filename", callback=validate_filename_arg)
    @click.option("--filepath", callback=validate_filepath_arg)
    def cli(filename: str, filepath: str) -> None:
        if filename:
            click.echo(f"filename: {filename}")
        if filepath:
            click.echo(f"filepath: {filepath}")


    if __name__ == "__main__":
        cli()

:Output: .. code-block::

    $ ./examples/click_validate.py --filename ab
    filename: ab
    $ ./examples/click_validate.py --filepath e?g
    Usage: click_validate.py [OPTIONS]
    Try 'click_validate.py --help' for help.

    Error: Invalid value for '--filename': [PV1100] invalid characters found: invalids=('?'), value='e?g', platform=Windows

filename/filepath sanitizer for click

:Sample Code: .. code-block:: python

    import click

    from pathvalidate.click import sanitize_filename_arg, sanitize_filepath_arg


    @click.command()
    @click.option("--filename", callback=sanitize_filename_arg)
    @click.option("--filepath", callback=sanitize_filepath_arg)
    def cli(filename, filepath):
        if filename:
            click.echo(f"filename: {filename}")
        if filepath:
            click.echo(f"filepath: {filepath}")


    if __name__ == "__main__":
        cli()

:Output: .. code-block::

    $ ./examples/click_sanitize.py --filename a/b
    filename: ab

For more information

More examples can be found at https://pathvalidate.rtfd.io/en/latest/pages/examples/index.html

Installation

Installation: pip

::

pip install pathvalidate

Installation: conda

::

conda install -c thombashi pathvalidate

Installation: apt

::

sudo add-apt-repository ppa:thombashi/ppa
sudo apt update
sudo apt install python3-pathvalidate

Dependencies

Python 3.7+ no external dependencies.

Documentation

https://pathvalidate.rtfd.io/

Sponsors

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Become a sponsor <https://github.com/sponsors/thombashi>__