# HG changeset patch
# Parent d80f9977735aa747098cde7efdefab419ad5ebfb
Issue #22406: Implement uu-codec in terms of uu.decode()

diff -r d80f9977735a Lib/encodings/uu_codec.py
--- a/Lib/encodings/uu_codec.py	Mon Sep 15 06:23:20 2014 +0000
+++ b/Lib/encodings/uu_codec.py	Mon Sep 15 06:45:41 2014 +0000
@@ -10,6 +10,7 @@
 import codecs
 import binascii
 from io import BytesIO
+import uu
 
 ### Codec APIs
 
@@ -34,33 +35,10 @@
     assert errors == 'strict'
     infile = BytesIO(input)
     outfile = BytesIO()
-    readline = infile.readline
-    write = outfile.write
-
-    # Find start of encoded data
-    while 1:
-        s = readline()
-        if not s:
-            raise ValueError('Missing "begin" line in input data')
-        if s[:5] == b'begin':
-            break
-
-    # Decode
-    while True:
-        s = readline()
-        if not s or s == b'end\n':
-            break
-        try:
-            data = binascii.a2b_uu(s)
-        except binascii.Error as v:
-            # Workaround for broken uuencoders by /Fredrik Lundh
-            nbytes = (((ord(s[0])-32) & 63) * 4 + 5) / 3
-            data = binascii.a2b_uu(s[:nbytes])
-            #sys.stderr.write("Warning: %s\n" % str(v))
-        write(data)
-    if not s:
-        raise ValueError('Truncated input data')
-
+    try:
+        uu.decode(infile, outfile, quiet=True)
+    except uu.Error as err:
+        raise ValueError(format(err))
     return (outfile.getvalue(), len(input))
 
 class Codec(codecs.Codec):
diff -r d80f9977735a Lib/test/test_codecs.py
--- a/Lib/test/test_codecs.py	Mon Sep 15 06:23:20 2014 +0000
+++ b/Lib/test/test_codecs.py	Mon Sep 15 06:45:41 2014 +0000
@@ -2562,6 +2562,10 @@
                 with self.subTest(alias=alias):
                     info = codecs.lookup(alias)
                     self.assertEqual(info.name, expected_name)
+    
+    def test_uu_invalid(self):
+        # Missing "begin" line
+        self.assertRaises(ValueError, codecs.decode, b"", "uu-codec")
 
 
 # The codec system tries to wrap exceptions in order to ensure the error