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"""
Functions for dealing with mixed-case files from case-preserving file
systems.
Todo:
- handle patterns that already have brackets
"""
from __future__ import print_function
import os
import glob
import fnmatch
def ipat(pat):
"""Convert glob pattern to case insensitive form."""
(dirname, pat) = os.path.split(pat)
# Convert '/path/to/test.fpt' => '/path/to/[Tt][Ee][Ss][Tt].[]'
newpat = ''
for c in pat:
if c.isalpha:
u = c.upper()
l = c.lower()
if u != l:
newpat = newpat + '[' + u + l + ']'
else:
newpat += c
else:
newpat += c
newpat = os.path.join(dirname, newpat)
return newpat
def ifnmatch(name, pat):
"""Case insensitive version of fnmatch.fnmatch()"""
return fnmatch.fnmatch(name, ipat(pat))
def iglob(pat):
"""Case insensitive version of glob.glob()"""
return glob.glob(ipat(pat))
def ifind(pat, ext=None):
"""Look for a file in a case insensitive way.
Returns filename it a matching file was found, or None if it was not.
"""
if ext:
pat = os.path.splitext(pat)[0] + ext
files = iglob(pat)
if files:
return files[0] # Return an arbitrary file
else:
return None
__all__ = ['ipat', 'ifnmatch', 'iglob', 'ifind']
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