From b507d2e07d19692df25a07c82f6d96ff1e4b4313 Mon Sep 17 00:00:00 2001
From: "R. David Murray" <rdmurray@bitdance.com>
Date: Wed, 29 Apr 2009 15:34:32 +0000
Subject: [PATCH] Merged revisions 72100-72101 via svnmerge from
 svn+ssh://pythondev@svn.python.org/python/trunk
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

........
  r72100 | r.david.murray | 2009-04-29 09:17:37 -0400 (Wed, 29 Apr 2009) | 7 lines

  Fix issue 2245.  aifc now skips any chunk type it doesn't actually
  process instead of throwing errors for anything not in an explicit
  skip list.  This is per this spec: http://www.cnpbagwell.com/aiff-c.txt.
  Spec reference and test sound file provided by Santiago Peresón, fix
  based on patch by Hiroaki Kawai.
........
  r72101 | r.david.murray | 2009-04-29 09:51:44 -0400 (Wed, 29 Apr 2009) | 2 lines

  Now that we've got a test_aifc, add a few tests.
........
---
 Lib/aifc.py                    |   8 -----
 Lib/test/Sine-1000Hz-300ms.aif | Bin 0 -> 61696 bytes
 Lib/test/test_aifc.py          |  59 +++++++++++++++++++++++++++++++++
 Lib/test/test_sundry.py        |   1 -
 Misc/ACKS                      |   2 ++
 Misc/NEWS                      |   2 ++
 6 files changed, 63 insertions(+), 9 deletions(-)
 create mode 100644 Lib/test/Sine-1000Hz-300ms.aif
 create mode 100644 Lib/test/test_aifc.py

diff --git a/Lib/aifc.py b/Lib/aifc.py
index 26b0ff5b7a30..36312b3c2cbe 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -144,9 +144,6 @@ class Error(Exception):
 
 _AIFC_version = 0xA2805140     # Version 1 of AIFF-C
 
-_skiplist = b'COMT', b'INST', b'MIDI', b'AESD', \
-      b'APPL', b'NAME', b'AUTH', b'(c) ', b'ANNO'
-
 def _read_long(file):
     try:
         return struct.unpack('>l', file.read(4))[0]
@@ -313,11 +310,6 @@ class Aifc_read:
                 self._version = _read_ulong(chunk)
             elif chunkname == b'MARK':
                 self._readmark(chunk)
-            elif chunkname in _skiplist:
-                pass
-            else:
-                raise Error('unrecognized chunk type ' +
-                            chunkname.decode('latin1'))
             chunk.skip()
         if not self._comm_chunk_read or not self._ssnd_chunk:
             raise Error('COMM chunk and/or SSND chunk missing')
diff --git a/Lib/test/Sine-1000Hz-300ms.aif b/Lib/test/Sine-1000Hz-300ms.aif
new file mode 100644
index 0000000000000000000000000000000000000000..bf08f5ce859429eeeab213fd29a201b0d851b9c3
GIT binary patch
literal 61696
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z=jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3==jZ3=
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K=jZ4D3;r*ykgNj$

literal 0
Hc-jL100001

diff --git a/Lib/test/test_aifc.py b/Lib/test/test_aifc.py
new file mode 100644
index 000000000000..fd411262207c
--- /dev/null
+++ b/Lib/test/test_aifc.py
@@ -0,0 +1,59 @@
+from test.support import findfile, run_unittest
+import unittest
+
+import aifc
+
+
+class AIFCTest(unittest.TestCase):
+
+    def setUp(self):
+        self.sndfilepath = findfile('Sine-1000Hz-300ms.aif')
+
+    def test_skipunknown(self):
+        #Issue 2245
+        #This file contains chunk types aifc doesn't recognize.
+        f = aifc.open(self.sndfilepath)
+        f.close()
+
+    def test_params(self):
+        f = aifc.open(self.sndfilepath)
+        self.assertEqual(f.getnchannels(), 2)
+        self.assertEqual(f.getsampwidth(), 2)
+        self.assertEqual(f.getframerate(), 48000)
+        self.assertEqual(f.getnframes(), 14400)
+        # XXX: are the next two correct?  The docs say/imply they are supposed
+        # to be strings.
+        self.assertEqual(f.getcomptype(), b'NONE')
+        self.assertEqual(f.getcompname(), b'not compressed')
+        self.assertEqual(
+            f.getparams(),
+            (2, 2, 48000, 14400, b'NONE', b'not compressed'),
+            )
+        f.close()
+
+    def test_read(self):
+        f = aifc.open(self.sndfilepath)
+        self.assertEqual(f.tell(), 0)
+        self.assertEqual(f.readframes(2), b'\x00\x00\x00\x00\x0b\xd4\x0b\xd4')
+        f.rewind()
+        pos0 = f.tell()
+        self.assertEqual(pos0, 0)
+        self.assertEqual(f.readframes(2), b'\x00\x00\x00\x00\x0b\xd4\x0b\xd4')
+        pos2 = f.tell()
+        self.assertEqual(pos2, 2)
+        self.assertEqual(f.readframes(2), b'\x17t\x17t"\xad"\xad')
+        f.setpos(pos2)
+        self.assertEqual(f.readframes(2), b'\x17t\x17t"\xad"\xad')
+        f.setpos(pos0)
+        self.assertEqual(f.readframes(2), b'\x00\x00\x00\x00\x0b\xd4\x0b\xd4')
+        f.close()
+
+    #XXX Need more tests!
+
+
+def test_main():
+    run_unittest(AIFCTest)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_sundry.py b/Lib/test/test_sundry.py
index bba54fe5ed15..ee387c745485 100644
--- a/Lib/test/test_sundry.py
+++ b/Lib/test/test_sundry.py
@@ -9,7 +9,6 @@ class TestUntestedModules(unittest.TestCase):
     def test_at_least_import_untested_modules(self):
         with warnings.catch_warnings():
             warnings.simplefilter("ignore")
-            import aifc
             import bdb
             import cgitb
             import code
diff --git a/Misc/ACKS b/Misc/ACKS
index a4f848108ff8..7eab407d2ed1 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -372,6 +372,7 @@ Tamito Kajiyama
 Peter van Kampen
 Jacob Kaplan-Moss
 Lou Kates
+Hiroaki Kawai
 Sebastien Keim
 Robert Kern
 Randall Kern
@@ -545,6 +546,7 @@ Randy Pausch
 Samuele Pedroni
 Marcel van der Peijl
 Steven Pemberton
+Santiago Peresón
 Mark Perrego
 Trevor Perrin
 Tim Peters
diff --git a/Misc/NEWS b/Misc/NEWS
index 54a3b093f808..bb4c134eac86 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -473,6 +473,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
+
 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive 
   anymore.
 
-- 
2.47.3