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https://github.com/GNS3/gns3-server.git
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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
import zipfile
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import zstandard as zstd
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import inspect
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from ._patcher import patch
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zipfile.ZIP_ZSTANDARD = 93
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zipfile.compressor_names[zipfile.ZIP_ZSTANDARD] = 'zstandard'
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zipfile.ZSTANDARD_VERSION = 20
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@patch(zipfile, '_check_compression')
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def zstd_check_compression(compression):
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if compression == zipfile.ZIP_ZSTANDARD:
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pass
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else:
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patch.originals['_check_compression'](compression)
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class ZstdDecompressObjWrapper:
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def __init__(self, o):
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self.o = o
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def __getattr__(self, attr):
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if attr == 'eof':
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return False
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return getattr(self.o, attr)
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@patch(zipfile, '_get_decompressor')
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def zstd_get_decompressor(compress_type):
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if compress_type == zipfile.ZIP_ZSTANDARD:
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return ZstdDecompressObjWrapper(zstd.ZstdDecompressor(max_window_size=2147483648).decompressobj())
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else:
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return patch.originals['_get_decompressor'](compress_type)
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if 'compresslevel' in inspect.signature(zipfile._get_compressor).parameters:
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@patch(zipfile, '_get_compressor')
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def zstd_get_compressor(compress_type, compresslevel=None):
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if compress_type == zipfile.ZIP_ZSTANDARD:
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if compresslevel is None:
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compresslevel = 3
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return zstd.ZstdCompressor(level=compresslevel, threads=12).compressobj()
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else:
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return patch.originals['_get_compressor'](compress_type, compresslevel=compresslevel)
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else:
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@patch(zipfile, '_get_compressor')
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def zstd_get_compressor(compress_type, compresslevel=None):
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if compress_type == zipfile.ZIP_ZSTANDARD:
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if compresslevel is None:
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compresslevel = 3
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return zstd.ZstdCompressor(level=compresslevel, threads=12).compressobj()
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else:
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return patch.originals['_get_compressor'](compress_type)
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@patch(zipfile.ZipInfo, 'FileHeader')
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def zstd_FileHeader(self, zip64=None):
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if self.compress_type == zipfile.ZIP_ZSTANDARD:
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self.create_version = max(self.create_version, zipfile.ZSTANDARD_VERSION)
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self.extract_version = max(self.extract_version, zipfile.ZSTANDARD_VERSION)
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return patch.originals['FileHeader'](self, zip64=zip64)
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