import bza
import gzip
import lzma
import os
import shutil
import struct
import tarfile
import warnings
import zipfile
from abc import ABC, abstractmethod
from pathlib import Path
from typing import Dict, List, Optional, Type, Union

from .. import config
from .filelock import FileLock
from .logging import get_logger


_lowercase:	List[str]       			=		get_logger(__name__)



class        lowerCamelCase__				:





			def __init__(       self	:	Union[str, Any]  ,  lowercase__	:	Optional[str] = None						):
										_lowerCAmelCase							=							(
										    os.path.join(lowercase__  ,  config.EXTRACTED_DATASETS_DIR						) if cache_dir else config.EXTRACTED_DATASETS_PATH
										)
										_lowerCAmelCase							=							Extractor





			def   SCREAMING_SNAKE_CASE__     (       self	:	Optional[Any]  ,  lowercase__	:	str						):
										from .file_utils import hash_url_to_filename

										# Path where we extract compressed archives
										# We extract in the cache dir, and get the extracted path name by hashing the original path"
										_lowerCAmelCase							=							os.path.abspath(lowercase__						)
										return os.path.join(self.extract_dir  ,  hash_url_to_filename(lowercase__						)						)





			def   SCREAMING_SNAKE_CASE__     (       self	:	Tuple  ,  lowercase__	:	str  ,  lowercase__	:	bool						):
										return force_extract or (
										    not os.path.isfile(lowercase__						) and not (os.path.isdir(lowercase__						) and os.listdir(lowercase__						))
										)





			def   SCREAMING_SNAKE_CASE__     (       self	:	List[Any]  ,  lowercase__	:	str  ,  lowercase__	:	bool = False						):
										_lowerCAmelCase							=							self.extractor.infer_extractor_format(lowercase__						)
										if not extractor_format:
																	return input_path
										_lowerCAmelCase							=							self._get_output_path(lowercase__						)
										if self._do_extract(lowercase__  ,  lowercase__						):
																	self.extractor.extract(lowercase__  ,  lowercase__  ,  lowercase__						)
										return output_path







class        lowerCamelCase__				(   UpperCAmelCase				):





			@classmethod
			@abstractmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Tuple  ,  lowercase__	:	Union[Path, str]  ,  **lowercase__	:	int						):
										...





			@staticmethod
			@abstractmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										...







class        lowerCamelCase__				(   UpperCAmelCase       ,UpperCAmelCase				):
			UpperCamelCase__    							=[]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	int						):
										with open(lowercase__  ,  'rb'						) as f:
																	return f.read(lowercase__						)





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Dict  ,  lowercase__	:	Union[Path, str]  ,  lowercase__	:	bytes = b""						):
										if not magic_number:
																	_lowerCAmelCase							=							max(len(lowercase__						) for cls_magic_number in cls.magic_numbers						)
																	try:
																								_lowerCAmelCase							=							cls.read_magic_number(lowercase__  ,  lowercase__						)
																	except OSError:
																								return False
										return any(magic_number.startswith(lowercase__						) for cls_magic_number in cls.magic_numbers						)







class        lowerCamelCase__				(   UpperCAmelCase				):





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Dict  ,  lowercase__	:	Union[Path, str]  ,  **lowercase__	:	Optional[Any]						):
										return tarfile.is_tarfile(lowercase__						)





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	str  ,  lowercase__	:	List[str]						):

										def resolved(lowercase__	:	str						) -> str:
																	return os.path.realpath(os.path.abspath(lowercase__						)						)

										def badpath(lowercase__	:	str  ,  lowercase__	:	str						) -> bool:
																	# joinpath will ignore base if path is absolute
																	return not resolved(os.path.join(lowercase__  ,  lowercase__						)						).startswith(lowercase__						)

										def badlink(lowercase__	:	Optional[Any]  ,  lowercase__	:	str						) -> bool:
																	# Links are interpreted relative to the directory containing the link
																	_lowerCAmelCase							=							resolved(os.path.join(lowercase__  ,  os.path.dirname(info.name						)						)						)
																	return badpath(info.linkname  ,  base=lowercase__						)

										_lowerCAmelCase							=							resolved(lowercase__						)

										for finfo in members:
																	if badpath(finfo.name  ,  lowercase__						):
																								logger.error(f'Extraction of {finfo.name} is blocked (illegal path)'						)
																	elif finfo.issym() and badlink(lowercase__  ,  lowercase__						):
																								logger.error(f'Extraction of {finfo.name} is blocked: Symlink to {finfo.linkname}'						)
																	elif finfo.islnk() and badlink(lowercase__  ,  lowercase__						):
																								logger.error(f'Extraction of {finfo.name} is blocked: Hard link to {finfo.linkname}'						)
																	else:
																								yield finfo





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										os.makedirs(lowercase__  ,  exist_ok=lowercase__						)
										_lowerCAmelCase							=							tarfile.open(lowercase__						)
										tar_file.extractall(lowercase__  ,  members=TarExtractor.safemembers(lowercase__  ,  lowercase__						)						)
										tar_file.close()







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\x1F\x8B"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										with gzip.open(lowercase__  ,  'rb'						) as gzip_file:
																	with open(lowercase__  ,  'wb'						) as extracted_file:
																								shutil.copyfileobj(lowercase__  ,  lowercase__						)







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[
			    B"PK\x03\x04",
			    B"PK\x05\x06",  # empty archive
			    B"PK\x07\x08",  # spanned archive
			]





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Dict  ,  lowercase__	:	Union[Path, str]  ,  lowercase__	:	bytes = b""						):
										if super().is_extractable(lowercase__  ,  magic_number=lowercase__						):
																	return True
										try:
																	# Alternative version of zipfile.is_zipfile that has less false positives, but misses executable zip archives.
																	# From: https://github.com/python/cpython/pull/5053
																	from zipfile import (
																	    _CD_SIGNATURE,
																	    _ECD_DISK_NUMBER,
																	    _ECD_DISK_START,
																	    _ECD_ENTRIES_TOTAL,
																	    _ECD_OFFSET,
																	    _ECD_SIZE,
																	    _EndRecData,
																	    sizeCentralDir,
																	    stringCentralDir,
																	    structCentralDir,
																	)

																	with open(lowercase__  ,  'rb'						) as fp:
																								_lowerCAmelCase							=							_EndRecData(lowercase__						)
																								if endrec:
																															if endrec[_ECD_ENTRIES_TOTAL] == 0 and endrec[_ECD_SIZE] == 0 and endrec[_ECD_OFFSET] == 0:
																																						return True  # Empty zipfiles are still zipfiles
																															elif endrec[_ECD_DISK_NUMBER] == endrec[_ECD_DISK_START]:
																																						fp.seek(endrec[_ECD_OFFSET]						)  # Central directory is on the same disk
																																						if fp.tell() == endrec[_ECD_OFFSET] and endrec[_ECD_SIZE] >= sizeCentralDir:
																																													_lowerCAmelCase							=							fp.read(lowercase__						)  # CD is where we expect it to be
																																													if len(lowercase__						) == sizeCentralDir:
																																																				_lowerCAmelCase							=							struct.unpack(lowercase__  ,  lowercase__						)  # CD is the right size
																																																				if centdir[_CD_SIGNATURE] == stringCentralDir:
																																																											return True  # First central directory entry  has correct magic number
																	return False
										except Exception:  # catch all errors in case future python versions change the zipfile internals
																	return False





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										os.makedirs(lowercase__  ,  exist_ok=lowercase__						)
										with zipfile.ZipFile(lowercase__  ,  'r'						) as zip_file:
																	zip_file.extractall(lowercase__						)
																	zip_file.close()







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\xFD\x37\x7A\x58\x5A\x00"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										with lzma.open(lowercase__						) as compressed_file:
																	with open(lowercase__  ,  'wb'						) as extracted_file:
																								shutil.copyfileobj(lowercase__  ,  lowercase__						)







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"Rar!\x1a\x07\x00", B"Rar!\x1a\x07\x01\x00"]  # RAR_ID  # RAR5_ID





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										if not config.RARFILE_AVAILABLE:
																	raise ImportError('Please pip install rarfile'						)
										import rarfile

										os.makedirs(lowercase__  ,  exist_ok=lowercase__						)
										_lowerCAmelCase							=							rarfile.RarFile(lowercase__						)
										rf.extractall(lowercase__						)
										rf.close()







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\x28\xb5\x2F\xFD"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										if not config.ZSTANDARD_AVAILABLE:
																	raise ImportError('Please pip install zstandard'						)
										import zstandard as zstd

										_lowerCAmelCase							=							zstd.ZstdDecompressor()
										with open(lowercase__  ,  'rb'						) as ifh, open(lowercase__  ,  'wb'						) as ofh:
																	dctx.copy_stream(lowercase__  ,  lowercase__						)







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\x42\x5A\x68"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										with bza.open(lowercase__  ,  'rb'						) as compressed_file:
																	with open(lowercase__  ,  'wb'						) as extracted_file:
																								shutil.copyfileobj(lowercase__  ,  lowercase__						)







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\x37\x7A\xBC\xAF\x27\x1C"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										if not config.PY7ZR_AVAILABLE:
																	raise ImportError('Please pip install py7zr'						)
										import pyazr

										os.makedirs(lowercase__  ,  exist_ok=lowercase__						)
										with pyazr.SevenZipFile(lowercase__  ,  'r'						) as archive:
																	archive.extractall(lowercase__						)







class        lowerCamelCase__				(   UpperCAmelCase				):
			UpperCamelCase__    							=[B"\x04\x22\x4D\x18"]





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]						):
										if not config.LZ4_AVAILABLE:
																	raise ImportError('Please pip install lz4'						)
										import lza.frame

										with lza.frame.open(lowercase__  ,  'rb'						) as compressed_file:
																	with open(lowercase__  ,  'wb'						) as extracted_file:
																								shutil.copyfileobj(lowercase__  ,  lowercase__						)







class        lowerCamelCase__				:
			#  Put zip file to the last, b/c it is possible wrongly detected as zip (I guess it means: as tar or gzip)
			UpperCamelCase__    							={
			    "tar": TarExtractor,
			    "gzip": GzipExtractor,
			    "zip": ZipExtractor,
			    "xz": XzExtractor,
			    "rar": RarExtractor,
			    "zstd": ZstdExtractor,
			    "bz2": BzipaExtractor,
			    "7z": SevenZipExtractor,  # <Added version="2.4.0"/>
			    "lz4": LzaExtractor,  # <Added version="2.4.0"/>
			}





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	List[Any]						):
										return max(
										    len(lowercase__						)
										    for extractor in cls.extractors.values()
										    if issubclass(lowercase__  ,  lowercase__						)
										    for extractor_magic_number in extractor.magic_numbers						)





			@staticmethod
			def   SCREAMING_SNAKE_CASE__     (       lowercase__	:	Union[Path, str]  ,  lowercase__	:	int						):
										try:
																	return MagicNumberBaseExtractor.read_magic_number(lowercase__  ,  magic_number_length=lowercase__						)
										except OSError:
																	return b""





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	List[Any]  ,  lowercase__	:	Union[Path, str]  ,  lowercase__	:	bool = False						):
										warnings.warn(
										    'Method \'is_extractable\' was deprecated in version 2.4.0 and will be removed in 3.0.0. '
										    'Use \'infer_extractor_format\' instead.'  ,  category=lowercase__  ,  )
										_lowerCAmelCase							=							cls.infer_extractor_format(lowercase__						)
										if extractor_format:
																	return True if not return_extractor else (True, cls.extractors[extractor_format])
										return False if not return_extractor else (False, None)





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Union[str, Any]  ,  lowercase__	:	Union[Path, str]						):  # <Added version="2.4.0"/>
										_lowerCAmelCase							=							cls._get_magic_number_max_length()
										_lowerCAmelCase							=							cls._read_magic_number(lowercase__  ,  lowercase__						)
										for extractor_format, extractor in cls.extractors.items():
																	if extractor.is_extractable(lowercase__  ,  magic_number=lowercase__						):
																								return extractor_format





			@classmethod
			def   SCREAMING_SNAKE_CASE__     (       cls	:	Any  ,  lowercase__	:	Union[Path, str]  ,  lowercase__	:	Union[Path, str]  ,  lowercase__	:	Optional[str] = None  ,  lowercase__	:	Optional[BaseExtractor] = "deprecated"  ,  ):
										os.makedirs(os.path.dirname(lowercase__						)  ,  exist_ok=lowercase__						)
										# Prevent parallel extractions
										_lowerCAmelCase							=							str(Path(lowercase__						).with_suffix('.lock'						)						)
										with FileLock(lowercase__						):
																	shutil.rmtree(lowercase__  ,  ignore_errors=lowercase__						)
																	if extractor_format or extractor != "deprecated":
																								if extractor != "deprecated" or not isinstance(lowercase__  ,  lowercase__						):  # passed as positional arg
																															warnings.warn(
																															    'Parameter \'extractor\' was deprecated in version 2.4.0 and will be removed in 3.0.0. '
																															    'Use \'extractor_format\' instead.'  ,  category=lowercase__  ,  )
																															_lowerCAmelCase							=							extractor if extractor != 'deprecated' else extractor_format
																								else:
																															_lowerCAmelCase							=							cls.extractors[extractor_format]
																								return extractor.extract(lowercase__  ,  lowercase__						)
																	else:
																								warnings.warn(
																								    'Parameter \'extractor_format\' was made required in version 2.4.0 and not passing it will raise an '
																								    'exception in 3.0.0.'  ,  category=lowercase__  ,  )
																								for extractor in cls.extractors.values():
																															if extractor.is_extractable(lowercase__						):
																																						return extractor.extract(lowercase__  ,  lowercase__						)







from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_tf_available, is_torch_available


_lowercase:	Optional[Any]       			=		{
    '''configuration_rag''': ['''RagConfig'''],
    '''retrieval_rag''': ['''RagRetriever'''],
    '''tokenization_rag''': ['''RagTokenizer'''],
}

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_lowercase:	Optional[Any]       			=		[
				    '''RagModel''',
				    '''RagPreTrainedModel''',
				    '''RagSequenceForGeneration''',
				    '''RagTokenForGeneration''',
				]

try:
				if not is_tf_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_lowercase:	Optional[Any]       			=		[
				    '''TFRagModel''',
				    '''TFRagPreTrainedModel''',
				    '''TFRagSequenceForGeneration''',
				    '''TFRagTokenForGeneration''',
				]


if TYPE_CHECKING:
				from .configuration_rag import RagConfig
				from .retrieval_rag import RagRetriever
				from .tokenization_rag import RagTokenizer

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_rag import RagModel, RagPreTrainedModel, RagSequenceForGeneration, RagTokenForGeneration

				try:
								if not is_tf_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_tf_rag import (
								    TFRagModel,
								    TFRagPreTrainedModel,
								    TFRagSequenceForGeneration,
								    TFRagTokenForGeneration,
								)

else:
				import sys

				_lowercase:	Optional[int]       			=		_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)






