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Fixed an infinite loop

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Parsing this new file from soundgrinder seems to be error-prone, for now this fixes it.
This commit is contained in:
Jamie Hardt
2019-01-04 18:36:22 -08:00
parent 5315575e35
commit c20b17e82c
3 changed files with 26 additions and 18 deletions
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2
tests/test_wave_parsing.py
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@@ -66,7 +66,7 @@ class TestWaveInfo(TestCase):
for wav_file in self.all_files(): for wav_file in self.all_files():
info = wavinfo.WavInfoReader(wav_file) info = wavinfo.WavInfoReader(wav_file)
ffprobe_info = ffprobe(wav_file) ffprobe_info = ffprobe(wav_file)
if info.bext:
self.assertEqual( info.bext.description, ffprobe_info['format']['tags']['comment'] ) self.assertEqual( info.bext.description, ffprobe_info['format']['tags']['comment'] )
self.assertEqual( info.bext.originator, ffprobe_info['format']['tags']['encoded_by'] ) self.assertEqual( info.bext.originator, ffprobe_info['format']['tags']['encoded_by'] )
if 'originator_reference' in ffprobe_info['format']['tags']: if 'originator_reference' in ffprobe_info['format']['tags']:

9
wavinfo/riff_parser.py
View File

@@ -1,6 +1,6 @@
import struct import struct
import pdb
from collections import namedtuple from collections import namedtuple
class ListChunkDescriptor(namedtuple('ListChunkDescriptor' , 'signature children')): class ListChunkDescriptor(namedtuple('ListChunkDescriptor' , 'signature children')):
@@ -30,11 +30,16 @@ def parse_list_chunk(stream, length):
children = [] children = []
while (stream.tell() - start) < length: while (stream.tell() - start) < length:
children.append(parse_chunk(stream)) child_chunk = parse_chunk(stream)
if child_chunk:
children.append(child_chunk)
else:
break
return ListChunkDescriptor(signature=signature, children=children) return ListChunkDescriptor(signature=signature, children=children)
def parse_chunk(stream): def parse_chunk(stream):
#breakpoint()
ident = stream.read(4) ident = stream.read(4)
if len(ident) != 4: if len(ident) != 4:
return return

3
wavinfo/wave_reader.py
View File

@@ -115,7 +115,10 @@ class WavInfoReader():
def _get_bext(self, f, encoding): def _get_bext(self, f, encoding):
bext_data = self._find_chunk_data(b'bext',f,default_none=True) bext_data = self._find_chunk_data(b'bext',f,default_none=True)
if bext_data:
return WavBextReader(bext_data, encoding) return WavBextReader(bext_data, encoding)
else:
return None
def _get_ixml(self,f): def _get_ixml(self,f):
ixml_data = self._find_chunk_data(b'iXML',f,default_none=True) ixml_data = self._find_chunk_data(b'iXML',f,default_none=True)