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-rw-r--r--external_libs/python/zmq/utils/z85.py56
1 files changed, 0 insertions, 56 deletions
diff --git a/external_libs/python/zmq/utils/z85.py b/external_libs/python/zmq/utils/z85.py
deleted file mode 100644
index 1bb1784e..00000000
--- a/external_libs/python/zmq/utils/z85.py
+++ /dev/null
@@ -1,56 +0,0 @@
-"""Python implementation of Z85 85-bit encoding
-
-Z85 encoding is a plaintext encoding for a bytestring interpreted as 32bit integers.
-Since the chunks are 32bit, a bytestring must be a multiple of 4 bytes.
-See ZMQ RFC 32 for details.
-
-
-"""
-
-# Copyright (C) PyZMQ Developers
-# Distributed under the terms of the Modified BSD License.
-
-import sys
-import struct
-
-PY3 = sys.version_info[0] >= 3
-# Z85CHARS is the base 85 symbol table
-Z85CHARS = b"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-:+=^!/*?&<>()[]{}@%$#"
-# Z85MAP maps integers in [0,84] to the appropriate character in Z85CHARS
-Z85MAP = dict([(c, idx) for idx, c in enumerate(Z85CHARS)])
-
-_85s = [ 85**i for i in range(5) ][::-1]
-
-def encode(rawbytes):
- """encode raw bytes into Z85"""
- # Accepts only byte arrays bounded to 4 bytes
- if len(rawbytes) % 4:
- raise ValueError("length must be multiple of 4, not %i" % len(rawbytes))
-
- nvalues = len(rawbytes) / 4
-
- values = struct.unpack('>%dI' % nvalues, rawbytes)
- encoded = []
- for v in values:
- for offset in _85s:
- encoded.append(Z85CHARS[(v // offset) % 85])
-
- # In Python 3, encoded is a list of integers (obviously?!)
- if PY3:
- return bytes(encoded)
- else:
- return b''.join(encoded)
-
-def decode(z85bytes):
- """decode Z85 bytes to raw bytes"""
- if len(z85bytes) % 5:
- raise ValueError("Z85 length must be multiple of 5, not %i" % len(z85bytes))
-
- nvalues = len(z85bytes) / 5
- values = []
- for i in range(0, len(z85bytes), 5):
- value = 0
- for j, offset in enumerate(_85s):
- value += Z85MAP[z85bytes[i+j]] * offset
- values.append(value)
- return struct.pack('>%dI' % nvalues, *values)