



'''simple docstring'''

import os
import zipfile

import pytest

from datasets.utils.extract import (
    BzipaExtractor,
    Extractor,
    GzipExtractor,
    LzaExtractor,
    SevenZipExtractor,
    TarExtractor,
    XzExtractor,
    ZipExtractor,
    ZstdExtractor,
)

from .utils import require_lza, require_pyazr, require_zstandard







@pytest.mark.parametrize(
    'compression_format, is_archive'				,							[
        ('7z', True),
        ('bz2', False),
        ('gzip', False),
        ('lz4', False),
        ('tar', True),
        ('xz', False),
        ('zip', True),
        ('zstd', False),
    ]				,							)
def a_     (    __UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							)				->					Tuple:





			"""simple docstring"""







			snake_case:    Optional[int]      							={
			    '7z': (seven_zip_file, SevenZipExtractor),
			    'bz2': (bza_file, BzipaExtractor),
			    'gzip': (gz_file, GzipExtractor),
			    'lz4': (lza_file, LzaExtractor),
			    'tar': (tar_file, TarExtractor),
			    'xz': (xz_file, XzExtractor),
			    'zip': (zip_file, ZipExtractor),
			    'zstd': (zstd_file, ZstdExtractor),
			}
			snake_case							,  snake_case:    Any      							=input_paths_and_base_extractors[compression_format]
			if input_path is None:
						snake_case:    Dict      							=f'''for \'{compression_format}\' compression_format, '''
						if compression_format == "7z":
									reason += require_pyazr.kwargs["reason"]
						elif compression_format == "lz4":
									reason += require_lza.kwargs["reason"]
						elif compression_format == "zstd":
									reason += require_zstandard.kwargs["reason"]
						pytest.skip(__UpperCAmelCase					)
			assert base_extractor.is_extractable(__UpperCAmelCase					)
			snake_case:    List[str]      							=tmp_path / ('extracted' if is_archive else 'extracted.txt')
			base_extractor.extract(__UpperCAmelCase				,							__UpperCAmelCase					)
			if is_archive:
						assert output_path.is_dir()
						for file_path in output_path.iterdir():
									assert file_path.name == text_file.name
									snake_case:    int      							=file_path.read_text(encoding='utf-8'					)
			else:
						snake_case:    Any      							=output_path.read_text(encoding='utf-8'					)
			snake_case:    Union[str, Any]      							=text_file.read_text(encoding='utf-8'					)
			assert extracted_file_content == expected_file_content







@pytest.mark.parametrize(
    'compression_format, is_archive'				,							[
        ('7z', True),
        ('bz2', False),
        ('gzip', False),
        ('lz4', False),
        ('tar', True),
        ('xz', False),
        ('zip', True),
        ('zstd', False),
    ]				,							)
def a_     (    __UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							)				->					Optional[Any]:





			"""simple docstring"""







			snake_case:    Tuple      							={
			    '7z': seven_zip_file,
			    'bz2': bza_file,
			    'gzip': gz_file,
			    'lz4': lza_file,
			    'tar': tar_file,
			    'xz': xz_file,
			    'zip': zip_file,
			    'zstd': zstd_file,
			}
			snake_case:    List[str]      							=input_paths[compression_format]
			if input_path is None:
						snake_case:    Optional[int]      							=f'''for \'{compression_format}\' compression_format, '''
						if compression_format == "7z":
									reason += require_pyazr.kwargs["reason"]
						elif compression_format == "lz4":
									reason += require_lza.kwargs["reason"]
						elif compression_format == "zstd":
									reason += require_zstandard.kwargs["reason"]
						pytest.skip(__UpperCAmelCase					)
			snake_case:    Optional[Any]      							=Extractor.infer_extractor_format(__UpperCAmelCase					)
			assert extractor_format is not None
			snake_case:    int      							=tmp_path / ('extracted' if is_archive else 'extracted.txt')
			Extractor.extract(__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase					)
			if is_archive:
						assert output_path.is_dir()
						for file_path in output_path.iterdir():
									assert file_path.name == text_file.name
									snake_case:    Optional[int]      							=file_path.read_text(encoding='utf-8'					)
			else:
						snake_case:    List[Any]      							=output_path.read_text(encoding='utf-8'					)
			snake_case:    Dict      							=text_file.read_text(encoding='utf-8'					)
			assert extracted_file_content == expected_file_content







@pytest.fixture
def a_     (    __UpperCAmelCase				,							__UpperCAmelCase					)				->					List[Any]:





			"""simple docstring"""







			import tarfile

			snake_case:    Dict      							=tmp_path / 'data_dot_dot'
			directory.mkdir()
			snake_case:    List[str]      							=directory / 'tar_file_with_dot_dot.tar'
			with tarfile.TarFile(__UpperCAmelCase				,							'w'					) as f:
						f.add(__UpperCAmelCase				,							arcname=os.path.join('..'				,							text_file.name					)					)
			return path







@pytest.fixture
def a_     (    __UpperCAmelCase					)				->					List[Any]:





			"""simple docstring"""







			import tarfile

			snake_case:    Dict      							=tmp_path / 'data_sym_link'
			directory.mkdir()
			snake_case:    Dict      							=directory / 'tar_file_with_sym_link.tar'
			os.symlink('..'				,							directory / 'subdir'				,							target_is_directory=__UpperCAmelCase					)
			with tarfile.TarFile(__UpperCAmelCase				,							'w'					) as f:
						f.add(str(directory / 'subdir'					)				,							arcname='subdir'					)  # str required by os.readlink on Windows and Python < 3.8
			return path







@pytest.mark.parametrize(
    'insecure_tar_file, error_log'				,							[('tar_file_with_dot_dot', 'illegal path'), ('tar_file_with_sym_link', 'Symlink')]				,							)
def a_     (    __UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase					)				->					Optional[int]:





			"""simple docstring"""







			snake_case:    Tuple      							={
			    'tar_file_with_dot_dot': tar_file_with_dot_dot,
			    'tar_file_with_sym_link': tar_file_with_sym_link,
			}
			snake_case:    int      							=insecure_tar_files[insecure_tar_file]
			snake_case:    str      							=tmp_path / 'extracted'
			TarExtractor.extract(__UpperCAmelCase				,							__UpperCAmelCase					)
			assert caplog.text
			for record in caplog.records:
						assert record.levelname == "ERROR"
						assert error_log in record.msg







def a_     (    __UpperCAmelCase					)				->					int:





			"""simple docstring"""







			snake_case:    List[str]      							=tmpdir / 'not_a_zip_file'
			# From: https://github.com/python/cpython/pull/5053
			snake_case:    int      							=(
			    b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00'
			    b'\x00\x02\x08\x06\x00\x00\x00\x99\x81\xb6\'\x00\x00\x00\x15I'
			    b'DATx\x01\x01\n\x00\xf5\xff\x00PK\x05\x06\x00PK\x06\x06\x07'
			    b'\xac\x01N\xc6|a\r\x00\x00\x00\x00IEND\xaeB`\x82'
			)
			with not_a_zip_file.open('wb'					) as f:
						f.write(__UpperCAmelCase					)
			assert zipfile.is_zipfile(str(__UpperCAmelCase					)					)  # is a false positive for `zipfile`
			assert not ZipExtractor.is_extractable(__UpperCAmelCase					)  # but we're right









'''simple docstring'''

def a_     (    __UpperCAmelCase				,							__UpperCAmelCase				,							__UpperCAmelCase					)				->					list:





			"""simple docstring"""







			snake_case:    Optional[int]      							=len(__UpperCAmelCase					)
			snake_case:    Optional[int]      							=[[0] * n for i in range(__UpperCAmelCase					)]
			for i in range(__UpperCAmelCase					):
						snake_case:    Optional[int]      							=y_points[i]

			for i in range(2				,							__UpperCAmelCase					):
						for j in range(__UpperCAmelCase				,							__UpperCAmelCase					):
									snake_case:    List[str]      							=(
									    (xa - x_points[j - i + 1]) * q[j][i - 1]
									    - (xa - x_points[j]) * q[j - 1][i - 1]
									) / (x_points[j] - x_points[j - i + 1])

			return [q[n - 1][n - 1], q]


if __name__ == "__main__":
	import doctest

	doctest.testmod()




