gristle_freaker - problems with single-col file

[kenfar]

I've found that it fails a few different ways on files consisting of just a single field or column:

• first the csv sniff module can't determine the delimiter. This can be bypassed by specifying one (even tho none exists in the data).

$ gristle_freaker col0.csv -c 0 -d','
Traceback (most recent call last):
File "/usr/local/bin/gristle_freaker", line 487, in
sys.exit(main())
File "/usr/local/bin/gristle_freaker", line 71, in main
dialect = get_dialect(opts, files)
File "/usr/local/bin/gristle_freaker", line 117, in get_dialect
my_file.analyze_file()
File "/usr/local/lib/python2.7/site-packages/gristle/file_type.py", line 98, in analyze_file
self.dialect.has_header = self._get_has_header(self._has_header)
File "/usr/local/lib/python2.7/site-packages/gristle/file_type.py", line 203, in _get_has_header
return csv.Sniffer().has_header(sample)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/csv.py", line 392, in has_header
rdr = reader(StringIO(sample), self.sniff(sample))
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/csv.py", line 184, in sniff
raise Error, "Could not determine delimiter"
_csv.Error: Could not determine delimiter

• Secondly, the cvs sniff module fails on hasheader - this can be bypassed by specifying hasheader false in some other gristle utilities - but not this one.

$ gristle_freaker col0.csv -c 0 -d',' --hasheader false
Traceback (most recent call last):
File "/usr/local/bin/gristle_freaker", line 487, in
sys.exit(main())
File "/usr/local/bin/gristle_freaker", line 79, in main
opts.sampling_rate)
File "/usr/local/bin/gristle_freaker", line 187, in build_freq
for fields in csv.reader(fileinput.input(files), dialect):
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/fileinput.py", line 253, in next
line = self.readline()
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/fileinput.py", line 351, in readline
return self.readline()
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/fileinput.py", line 345, in readline
self._file = open(self._filename, self._mode)
IOError: [Errno 2] No such file or directory: 'false'