From 44be832c5708baadd146cb954befbc3dcad8d463 Mon Sep 17 00:00:00 2001
From: Micah Anderson <micah@riseup.net>
Date: Tue, 11 Nov 2014 11:52:45 -0500
Subject: prepare for upgrade to new upstream

---
 zmq/utils/z85.py | 56 --------------------------------------------------------
 1 file changed, 56 deletions(-)
 delete mode 100644 zmq/utils/z85.py

(limited to 'zmq/utils/z85.py')

diff --git a/zmq/utils/z85.py b/zmq/utils/z85.py
deleted file mode 100644
index 1bb1784..0000000
--- a/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)
-- 
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