| Index: tools/telemetry/third_party/gsutilz/third_party/rsa/rsa/varblock.py
|
| diff --git a/tools/telemetry/third_party/gsutilz/third_party/rsa/rsa/varblock.py b/tools/telemetry/third_party/gsutilz/third_party/rsa/rsa/varblock.py
|
| deleted file mode 100644
|
| index c7d96ae6a7abcc2e501f0e1068a0c247118d6297..0000000000000000000000000000000000000000
|
| --- a/tools/telemetry/third_party/gsutilz/third_party/rsa/rsa/varblock.py
|
| +++ /dev/null
|
| @@ -1,155 +0,0 @@
|
| -# -*- coding: utf-8 -*-
|
| -#
|
| -# Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
|
| -#
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| -# Licensed under the Apache License, Version 2.0 (the "License");
|
| -# you may not use this file except in compliance with the License.
|
| -# You may obtain a copy of the License at
|
| -#
|
| -# http://www.apache.org/licenses/LICENSE-2.0
|
| -#
|
| -# Unless required by applicable law or agreed to in writing, software
|
| -# distributed under the License is distributed on an "AS IS" BASIS,
|
| -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
| -# See the License for the specific language governing permissions and
|
| -# limitations under the License.
|
| -
|
| -'''VARBLOCK file support
|
| -
|
| -The VARBLOCK file format is as follows, where || denotes byte concatenation:
|
| -
|
| - FILE := VERSION || BLOCK || BLOCK ...
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| -
|
| - BLOCK := LENGTH || DATA
|
| -
|
| - LENGTH := varint-encoded length of the subsequent data. Varint comes from
|
| - Google Protobuf, and encodes an integer into a variable number of bytes.
|
| - Each byte uses the 7 lowest bits to encode the value. The highest bit set
|
| - to 1 indicates the next byte is also part of the varint. The last byte will
|
| - have this bit set to 0.
|
| -
|
| -This file format is called the VARBLOCK format, in line with the varint format
|
| -used to denote the block sizes.
|
| -
|
| -'''
|
| -
|
| -from rsa._compat import byte, b
|
| -
|
| -
|
| -ZERO_BYTE = b('\x00')
|
| -VARBLOCK_VERSION = 1
|
| -
|
| -def read_varint(infile):
|
| - '''Reads a varint from the file.
|
| -
|
| - When the first byte to be read indicates EOF, (0, 0) is returned. When an
|
| - EOF occurs when at least one byte has been read, an EOFError exception is
|
| - raised.
|
| -
|
| - @param infile: the file-like object to read from. It should have a read()
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| - method.
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| - @returns (varint, length), the read varint and the number of read bytes.
|
| - '''
|
| -
|
| - varint = 0
|
| - read_bytes = 0
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| -
|
| - while True:
|
| - char = infile.read(1)
|
| - if len(char) == 0:
|
| - if read_bytes == 0:
|
| - return (0, 0)
|
| - raise EOFError('EOF while reading varint, value is %i so far' %
|
| - varint)
|
| -
|
| - byte = ord(char)
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| - varint += (byte & 0x7F) << (7 * read_bytes)
|
| -
|
| - read_bytes += 1
|
| -
|
| - if not byte & 0x80:
|
| - return (varint, read_bytes)
|
| -
|
| -
|
| -def write_varint(outfile, value):
|
| - '''Writes a varint to a file.
|
| -
|
| - @param outfile: the file-like object to write to. It should have a write()
|
| - method.
|
| - @returns the number of written bytes.
|
| - '''
|
| -
|
| - # there is a big difference between 'write the value 0' (this case) and
|
| - # 'there is nothing left to write' (the false-case of the while loop)
|
| -
|
| - if value == 0:
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| - outfile.write(ZERO_BYTE)
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| - return 1
|
| -
|
| - written_bytes = 0
|
| - while value > 0:
|
| - to_write = value & 0x7f
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| - value = value >> 7
|
| -
|
| - if value > 0:
|
| - to_write |= 0x80
|
| -
|
| - outfile.write(byte(to_write))
|
| - written_bytes += 1
|
| -
|
| - return written_bytes
|
| -
|
| -
|
| -def yield_varblocks(infile):
|
| - '''Generator, yields each block in the input file.
|
| -
|
| - @param infile: file to read, is expected to have the VARBLOCK format as
|
| - described in the module's docstring.
|
| - @yields the contents of each block.
|
| - '''
|
| -
|
| - # Check the version number
|
| - first_char = infile.read(1)
|
| - if len(first_char) == 0:
|
| - raise EOFError('Unable to read VARBLOCK version number')
|
| -
|
| - version = ord(first_char)
|
| - if version != VARBLOCK_VERSION:
|
| - raise ValueError('VARBLOCK version %i not supported' % version)
|
| -
|
| - while True:
|
| - (block_size, read_bytes) = read_varint(infile)
|
| -
|
| - # EOF at block boundary, that's fine.
|
| - if read_bytes == 0 and block_size == 0:
|
| - break
|
| -
|
| - block = infile.read(block_size)
|
| -
|
| - read_size = len(block)
|
| - if read_size != block_size:
|
| - raise EOFError('Block size is %i, but could read only %i bytes' %
|
| - (block_size, read_size))
|
| -
|
| - yield block
|
| -
|
| -
|
| -def yield_fixedblocks(infile, blocksize):
|
| - '''Generator, yields each block of ``blocksize`` bytes in the input file.
|
| -
|
| - :param infile: file to read and separate in blocks.
|
| - :returns: a generator that yields the contents of each block
|
| - '''
|
| -
|
| - while True:
|
| - block = infile.read(blocksize)
|
| -
|
| - read_bytes = len(block)
|
| - if read_bytes == 0:
|
| - break
|
| -
|
| - yield block
|
| -
|
| - if read_bytes < blocksize:
|
| - break
|
| -
|
|
|