### Replace Symbols

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/sanitize.rst

Demonstrates the usage of the replace_symbol function, which replaces specified symbols within a string.

```python
from pathvalidate import replace_symbol


string = replace_symbol('abc<>:|"?*123', '_')
print(string)
```

--------------------------------

### Sanitize Filepath

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Explains how to use `sanitize_filepath` to clean file paths by removing or replacing characters that are not allowed in file paths. Shows examples with various problematic characters.

```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")
```

--------------------------------

### Sanitize Filepath

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/sanitize.rst

Demonstrates the usage of the sanitize_filepath function, which replaces invalid characters in a filepath.

```python
from pathvalidate import sanitize_filepath


filepath = sanitize_filepath('dir/../file<>:|"?*.txt')
print(filepath)
```

--------------------------------

### Custom Reserved Name Handler for Filename Sanitization

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Illustrates how to provide a custom handler function to `sanitize_filename` for managing reserved names. This example appends an underscore to reserved names.

```python
from pathvalidate import sanitize_filename, ValidationError


def add_trailing_underscore(e: ValidationError) -> str:
    if e.reusable_name:
        return e.reserved_name

    return f"{e.reserved_name}_"


sanitize_filename(
    ".", reserved_name_handler=add_trailing_underscore, additional_reserved_names=["."]
)
```

--------------------------------

### Sanitize Filename

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Demonstrates the `sanitize_filename` function to remove or replace invalid characters from filenames, making them safe for use. Includes examples with different types of invalid characters.

```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")
```

--------------------------------

### Sanitize Filename

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/sanitize.rst

Demonstrates the usage of the sanitize_filename function, which replaces invalid characters in a filename.

```python
from pathvalidate import sanitize_filename


filepath = sanitize_filename('file<>":|?*.txt')
print(filepath)
```

--------------------------------

### Validate Filename and Filepath with Argparse in Python

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/argparse_validator.txt

This Python code snippet showcases how to use `validate_filename_arg` and `validate_filepath_arg` from the pathvalidate library with Python's `ArgumentParser`. It defines arguments for filename and filepath and prints them if provided. The validation ensures that invalid characters are caught during argument parsing.

```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}")
```

--------------------------------

### Sanitize Filename and Filepath with Argparse

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/argparse_sanitizer.txt

This Python code uses the pathvalidate library to sanitize command-line arguments for filenames and filepaths. It defines an ArgumentParser, adds arguments with custom sanitization types, and prints the sanitized values. The sanitize_filepath_arg is set to 'auto' for platform detection.

```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))
```

--------------------------------

### Validate Filename with Invalid Characters and Reserved Names (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/validate_filename_code.txt

This snippet shows how to use the `validate_filename` function from the `pathvalidate` library to check for invalid characters and reserved names in a filename. It includes examples of catching `ValidationError` exceptions and printing error messages to standard error.

```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)
```

--------------------------------

### Custom Reserved Name Handling Output

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/tips.rst

Shows the output when custom reserved name handling is applied. '. ' is sanitized to '._' and 'hoge/./foo' is sanitized to 'hoge/._/foo' when '.' and '..' are explicitly treated as reserved names with a custom handler.

```console
._
hoge/._/foo
```

--------------------------------

### Validate Filename with Length Constraint

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Shows how to validate a filename against a maximum length using `validate_filename`. It catches `ValidationError` when the filename exceeds the specified limit.

```python
import sys
from pathvalidate import ValidationError, validate_filename

try:
    validate_filename("aaaaaa\naaaa", max_len=1)
except ValidationError as e:
    print(f"{e}\n", file=sys.stderr)
```

--------------------------------

### Validate Filename with Invalid Characters and Reserved Names

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Demonstrates how to use `validate_filename` to check for invalid characters and reserved names like 'COM1'. Catches `ValidationError` and prints the error message.

```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)
```

--------------------------------

### Check if Filepath is Valid

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Explains the usage of `is_valid_filepath` to verify if a string conforms to valid file path conventions. It also shows how a sanitized filepath is considered valid.

```python
from pathvalidate import is_valid_filepath, sanitize_filepath

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

sanitized_fpath = sanitize_filepath(fpath)
print(f"is_valid_filepath('{sanitized_fpath}') return {is_valid_filepath(sanitized_fpath)}\n")
```

--------------------------------

### Validate Filename and Filepath Arguments with Click (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/click_validator.txt

This Python script showcases the use of pathvalidate's `validate_filename_arg` and `validate_filepath_arg` as click callbacks. These callbacks automatically validate command-line arguments for filenames and filepaths, raising errors for invalid input based on the current platform.

```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()
```

--------------------------------

### Sanitize Filename and Filepath (Default Behavior)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/tips.rst

Demonstrates the default behavior of `sanitize_filename` and `sanitize_filepath` when processing dot-files and dot-directories. `sanitize_filename` leaves '.' unchanged, while `sanitize_filepath` normalizes paths like 'hoge/./foo' to 'hoge/foo'.

```python
print(sanitize_filename("."))
print(sanitize_filepath("hoge/./foo"))
```

```console
.
hoge/foo
```

--------------------------------

### Validate and Sanitize File Path in Python

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/is_valid_filepath_code.txt

This snippet shows how to use the `is_valid_filepath` and `sanitize_filepath` functions from the `pathvalidate` library. It checks an initial invalid path, then sanitizes it and checks the sanitized path for validity. Dependencies include the `pathvalidate` library.

```python
from pathvalidate import is_valid_filepath, sanitize_filepath

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

sanitized_fpath = sanitize_filepath(fpath)
print(f"is_valid_filepath('{sanitized_fpath}') return {is_valid_filepath(sanitized_fpath)}\n")
```

--------------------------------

### Check if Filename is Valid

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Demonstrates the `is_valid_filename` function to determine if a given string is a valid filename. It also shows how sanitizing a filename can make it valid.

```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")
```

--------------------------------

### Custom Sanitize Filename and Filepath with Reserved Names

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/tips.rst

Illustrates how to customize filename and filepath sanitization to treat '.' and '..' as reserved names. It defines a handler `always_add_trailing_underscore` to append an underscore to reserved names and applies this customization using `additional_reserved_names`.

```python
from pathvalidate import sanitize_filepath, sanitize_filename
from pathvalidate.error import ValidationError


def always_add_trailing_underscore(e: ValidationError) -> str:
    if e.reusable_name:
        return e.reserved_name

    return f"{e.reserved_name}_"


print(
    sanitize_filename(
        ".",
        reserved_name_handler=always_add_trailing_underscore,
        additional_reserved_names=[".", ".."],
    )
)

print(
    sanitize_filepath(
        "hoge/./foo",
        normalize=False,
        reserved_name_handler=always_add_trailing_underscore,
        additional_reserved_names=[".", ".."],
    )
)
```

--------------------------------

### Replace Symbol in Filename

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Illustrates the `replace_symbol` function, which replaces all symbols in a string with an empty string, effectively removing them. Useful for cleaning filenames.

```python
from pathvalidate import replace_symbol

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

--------------------------------

### Validate Filepath with Invalid Characters

Source: https://github.com/thombashi/pathvalidate/blob/master/examples/pathvalidate_examples.ipynb

Illustrates the use of `validate_filepath` to check for invalid characters within a file path, specifically for the Windows platform. It catches and prints `ValidationError`.

```python
import sys
from pathvalidate import ValidationError, validate_filepath

try:
    validate_filepath('fi:l*e/p"a?t>h|.t<xt')
except ValidationError as e:
    print(e, file=sys.stderr)
```

--------------------------------

### Sanitize Filename and Filepath Arguments with Click

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/click_sanitizer.txt

This Python script utilizes the `pathvalidate` library to create a Click CLI application. It defines two options, `--filename` and `--filepath`, which use custom callbacks (`sanitize_filename_arg` and `sanitize_filepath_arg` respectively) to clean the input. The script then echoes the sanitized values.

```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()
```

--------------------------------

### Sanitize Filename with pathvalidate (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/sanitize_filename_code.txt

This snippet shows how to use the `sanitize_filename` function from the pathvalidate library to clean filenames containing invalid characters. The function takes a filename string as input and returns a sanitized version suitable for universal use.

```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")
```

--------------------------------

### Validate filename and filepath arguments with argparse

Source: https://github.com/thombashi/pathvalidate/blob/master/README.rst

This snippet shows how to use pathvalidate's `validate_filename_arg` and `validate_filepath_arg` with argparse to validate command-line arguments. It handles cases with valid and invalid inputs, demonstrating error messages for disallowed characters.

```python
from pathvalidate.argparse import validate_filename_arg, validate_filepath_arg

from argparse import ArgumentParser


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}")
```

--------------------------------

### pathvalidate Error Reasons Enum

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/error.rst

This snippet documents the ErrorReason enumeration from the pathvalidate library, listing its members and their inheritance. It provides a structured way to understand the reasons for validation failures.

```python
class pathvalidate.error.ErrorReason:
    """Enum for reasons why a path is invalid."""
    NULL_NAME = "the value must not be an empty string"
    RESERVED_NAME = "found a reserved name by a platform"
    INVALID_CHARACTER = "invalid characters found"
    INVALID_LENGTH = "found an invalid string length"
    FOUND_ABS_PATH = "found an absolute path where must be a relative path"
    MALFORMED_ABS_PATH = "found a malformed absolute path"
    INVALID_AFTER_SANITIZE = "found invalid value after sanitizing"
```

--------------------------------

### Validate and Sanitize Filename in Python

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/examples/is_valid_filename_code.txt

Demonstrates using `is_valid_filename` to check filename validity and `sanitize_filename` to remove invalid characters. Requires the pathvalidate library.

```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")
```

--------------------------------

### pathvalidate ValidationError Exception

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/error.rst

This snippet documents the ValidationError exception in the pathvalidate library. It serves as the base exception for all validation-related errors, allowing for specific error handling.

```python
class pathvalidate.error.ValidationError(Exception):
    """Base exception for validation errors."""
    pass
```

--------------------------------

### Sanitize a filepath string

Source: https://github.com/thombashi/pathvalidate/blob/master/README.rst

Sanitizes a given string to be a valid filepath. It removes characters that are invalid for the target platform and replaces reserved names. The default platform is 'universal', ensuring validity across all systems.

```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")
```

--------------------------------

### Validate and Sanitize Filename (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/function.rst

Validates if a given string is a valid filename and sanitizes it by removing or replacing invalid characters. It handles platform-specific filename rules. No external dependencies are required.

```Python
from pathvalidate import validate_filename, sanitize_filename

# Example usage
filename = "my_file.txt"
try:
    validate_filename(filename)
    print(f'"{filename}" is a valid filename.')
except Exception as e:
    print(f'Invalid filename: {e}')

sanitized_filename = sanitize_filename(filename)
print(f'Sanitized filename: "{sanitized_filename}"')

```

--------------------------------

### Validate and Replace Symbols (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/function.rst

Validates a string for the presence of invalid symbols and replaces them with a specified character or string. Useful for creating cross-platform compatible strings. No external libraries are required.

```Python
from pathvalidate import validate_symbol, replace_symbol

# Example usage
symbol_string = "file?name*with<invalid>symbols"

try:
    validate_symbol(symbol_string)
    print(f'"{symbol_string}" contains valid symbols.')
except Exception as e:
    print(f'Invalid symbol found: {e}')

replaced_string = replace_symbol(symbol_string, replacement='_')
print(f'String with replaced symbols: "{replaced_string}"')

```

--------------------------------

### Validate and Sanitize Filepath (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/function.rst

Validates if a given string represents a valid file path and sanitizes it by removing or replacing invalid characters. It considers platform-specific path constraints. No external dependencies are needed.

```Python
from pathvalidate import validate_filepath, sanitize_filepath

# Example usage
filepath = "/path/to/my_document.txt"
try:
    validate_filepath(filepath)
    print(f'"{filepath}" is a valid filepath.')
except Exception as e:
    print(f'Invalid filepath: {e}')

sanitized_filepath = sanitize_filepath(filepath)
print(f'Sanitized filepath: "{sanitized_filepath}"')

```

--------------------------------

### Check Filepath Validity (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/function.rst

Checks whether a given string is a valid file path according to system rules. This function only verifies the path's format and does not check for the existence of the file or directory. It raises an exception for invalid paths.

```Python
from pathvalidate import is_valid_filepath

# Example usage
filepath1 = "/usr/local/bin"
filepath2 = "C:\\Program Files\\App\0"

print(f'Is "{filepath1}" valid? {is_valid_filepath(filepath1)}')
print(f'Is "{filepath2}" valid? {is_valid_filepath(filepath2)}')

```

--------------------------------

### Check Filename Validity (Python)

Source: https://github.com/thombashi/pathvalidate/blob/master/docs/pages/reference/function.rst

Checks if a given string conforms to the rules of a valid filename. This function does not modify the filename. It raises an exception if the filename is invalid.

```Python
from pathvalidate import is_valid_filename

# Example usage
filename1 = "document.pdf"
filename2 = "$pecial_file*.doc"

print(f'Is "{filename1}" valid? {is_valid_filename(filename1)}')
print(f'Is "{filename2}" valid? {is_valid_filename(filename2)}')

```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.