X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=base91.py;h=f407d44c44db856250c53cd5489837ea84e1a602;hb=7e311a0bf071a2fb1fc6857a9e9828b8c8f7da54;hp=60bfa04762d698e41821f32bac9928774b5226c2;hpb=726c2ebd8c12fad24f29eb32bfdbaa6ecd4c3a4d;p=secnet.git

diff --git a/base91.py b/base91.py
deleted file mode 100644
index 60bfa04..0000000
--- a/base91.py
+++ /dev/null
@@ -1,69 +0,0 @@
-import struct
-
-base91_alphabet = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
-	'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
-	'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
-	'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
-	'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '!', '#', '$',
-	'%', '&', '(', ')', '*', '+', ',', '.', '/', ':', ';', '<', '=',
-	'>', '?', '@', '[', ']', '^', '_', '`', '{', '|', '}', '~', '"']
-
-decode_table = dict((v,k) for k,v in enumerate(base91_alphabet))
-
-def decode(encoded_str):
-    ''' Decode Base91 string to a bytearray '''
-    v = -1
-    b = 0
-    n = 0
-    out = bytearray()
-    for strletter in encoded_str:
-        if not strletter in decode_table:
-            continue
-        c = decode_table[strletter]
-        if(v < 0):
-            v = c
-        else:
-            v += c*91
-            b |= v << n
-            n += 13 if (v & 8191)>88 else 14
-            while True:
-                out += struct.pack('B', b&255)
-                b >>= 8
-                n -= 8
-                if not n>7:
-                    break
-            v = -1
-    if v+1:
-        out += struct.pack('B', (b | v << n) & 255 )
-    return out
-    
-def encode(bindata):
-    ''' Encode a bytearray to a Base91 string '''
-    l = len(bindata)
-    b = 0
-    n = 0
-    out = ''
-    for byte in bindata:
-        b |= struct.unpack('B', byte)[0] << n
-        n += 8
-        if n>13:
-            v = b & 8191
-            if v > 88:
-                b >>= 13
-                n -= 13
-            else:
-                v = b & 16383
-                b >>= 14
-                n -= 14
-            out += base91_alphabet[v % 91] + base91_alphabet[v / 91]
-    if n:
-        out += base91_alphabet[b % 91]
-        if n>7 or b>90:
-            out += base91_alphabet[b / 91]
-    return out
-
-
-
-
-
-
diff --git a/base91.py b/base91.py
new file mode 120000
index 0000000..f407d44
--- /dev/null
+++ b/base91.py
@@ -0,0 +1 @@
+base91-python/base91/__init__.py
\ No newline at end of file