def run_info(self, args):
self.show_version()
print("\nFormats:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(['t', 't'])
table.set_cols_align(["l", "r"])
for f in SupportedMethods.formats:
m = ''.join(' {:02x}'.format(x) for x in f['magic'])
table.add_row([f['name'], m])
print(table.draw())
print("\nCodecs and hashes:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(['t', 't'])
table.set_cols_align(["l", "r"])
for c in SupportedMethods.methods:
m = ''.join('{:02x}'.format(x) for x in c['id'])
table.add_row([m, c['name']])
table.add_row(['0', 'CRC32'])
if is_check_supported(CHECK_SHA256):
table.add_row(['0', 'SHA256'])
if is_check_supported(CHECK_CRC64):
table.add_row(['0', 'CRC64'])
print(table.draw())
def test_cli_info(capsys):
if lzma.is_check_supported(lzma.CHECK_CRC64):
check0 = "\nCHECK_CRC64"
else:
check0 = ""
if lzma.is_check_supported(lzma.CHECK_SHA256):
check1 = "\nCHECK_SHA256"
else:
check1 = ""
expected_checks = """Checks:
CHECK_NONE
CHECK_CRC32{}{}""".format(check0, check1)
expected = """py7zr version {} {}
Formats:
7z 37 7a bc af 27 1c
Codecs:
030101 LZMA
21 LZMA2
03 DELTA
03030103 BCJ
03030205 PPC
03030401 IA64
03030501 ARM
03030701 ARMT
03030805 SPARC
{}
""".format(py7zr.__version__, py7zr.__copyright__, expected_checks)
cli = py7zr.cli.Cli()
cli.run(["i"])
out, err = capsys.readouterr()
assert expected == out
def run_info(self, args):
self.show_version()
print("\nFormats:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(["t", "t"])
table.set_cols_align(["l", "r"])
for f in SupportedMethods.formats:
m = "".join(" {:02x}".format(x) for x in f["magic"])
table.add_row([f["name"], m])
print(table.draw())
print("\nCodecs and hashes:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(["t", "t"])
table.set_cols_align(["l", "r"])
for c in SupportedMethods.methods:
m = "".join("{:02x}".format(x) for x in c["id"])
table.add_row([m, c["name"]])
table.add_row(["0", "CRC32"])
if is_check_supported(CHECK_SHA256):
table.add_row(["0", "SHA256"])
if is_check_supported(CHECK_CRC64):
table.add_row(["0", "CRC64"])
print(table.draw())
def run_info(self, args):
print("py7zr version {} {}".format(py7zr.__version__,
py7zr.__copyright__))
print("Formats:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(['t', 't'])
table.set_cols_align(["l", "r"])
for f in SupportedMethods.formats:
m = ''.join(' {:02x}'.format(x) for x in f['magic'])
table.add_row([f['name'], m])
print(table.draw())
print("\nCodecs:")
table = texttable.Texttable()
table.set_deco(texttable.Texttable.HEADER)
table.set_cols_dtype(['t', 't'])
table.set_cols_align(["l", "r"])
for c in SupportedMethods.codecs:
m = ''.join('{:02x}'.format(x) for x in c['id'])
table.add_row([m, c['name']])
print(table.draw())
print("\nChecks:")
print("CHECK_NONE")
print("CHECK_CRC32")
if lzma.is_check_supported(lzma.CHECK_CRC64):
print("CHECK_CRC64")
if lzma.is_check_supported(lzma.CHECK_SHA256):
print("CHECK_SHA256")
def test_cli_info(capsys):
expected = py7zr.cli.Cli._get_version()
if lzma.is_check_supported(lzma.CHECK_CRC64):
check0 = "\n0 CRC64"
else:
check0 = ""
if lzma.is_check_supported(lzma.CHECK_SHA256):
check1 = "\n0 SHA256"
else:
check1 = ""
expected_checks = """0 CRC32{}{}""".format(check1, check0)
expected += """\n
Formats:
7z 37 7a bc af 27 1c
Codecs and hashes:
00 COPY
21 LZMA2
03 DELTA
030101 LZMA
03030103 BCJ
03030205 PPC
03030401 IA64
03030501 ARM
03030701 ARMT
03030805 SPARC
040108 DEFLATE
040202 BZip2
04f71101 ZStandard
030401 PPMd
04f71102 Brotli
040109 DEFLATE64
06f10701 7zAES
{}
""".format(
expected_checks
)
cli = py7zr.cli.Cli()
cli.run(["i"])
out, err = capsys.readouterr()
assert out == expected
def lzma_func():
'''
LZMA压缩算法压缩和解压缩
LZMAFile线程不是安全的
'''
# 文件
# 读取:format, filters, 写入:format, check, preset, filters
# lzma.open(filename, mode="rb", *, format=None, check=-1, preset=None, filters=None, encoding=None, errors=None, newline=None)
f = lzma.open("box.xz")
# lzma.compress(data, format=FORMAT_XZ, check=-1, preset=None, filters=None) // 压缩
bytes_com = lzma.compress(b'luzhuo.me')
# lzma.decompress(data, format=FORMAT_AUTO, memlimit=None, filters=None) // 解压
bytes_decom = lzma.decompress(bytes_com)
# lzma.is_check_supported(check) // 是否支持完整性检查
boolean = lzma.is_check_supported(lzma.CHECK_SHA256)
# 压缩对象 check:完整性检查:CHECK_NONE,CHECK_CRC32(32位循环冗余校验),CHECK_CRC64(64位循环冗余校验),CHECK_SHA256(sha256)
# preset: 压缩级别[0,9]
# class lzma.LZMACompressor(format=FORMAT_XZ, check=-1, preset=None, filters=None)
lzmacom = lzma.LZMACompressor()
bytes_com = lzmacom.compress(b"luzhuo.me") # 压缩
bytes_com = lzmacom.flush() # 完成压缩
# 解压缩对象
# class lzma.LZMADecompressor(format=FORMAT_AUTO, memlimit=None, filters=None)
lzmadecom = lzma.LZMADecompressor()
# decompress(data, max_length=-1)
bytes_decom = lzmadecom.decompress(bytes_com) # 解压
# 异常
try:
pass
except lzma.LZMAError:
pass # 在压缩或解压或初始化时发生错误
def test_default_check_supported() -> None:
assert is_check_supported(DEFAULT_CHECK)
def verify_compression():
import bz2, lzma, zlib
assert lzma.is_check_supported(lzma.CHECK_CRC64)
assert lzma.is_check_supported(lzma.CHECK_SHA256)
def update_event(self, inp=-1):
self.set_output_val(0, lzma.is_check_supported(self.input(0)))
def test_compression(self):
import bz2, lzma, zlib
self.assertTrue(lzma.is_check_supported(lzma.CHECK_CRC64))
self.assertTrue(lzma.is_check_supported(lzma.CHECK_SHA256))
