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import glob
import os.path
import urwid
class _PathCompleter:
def __init__(self, _testing=False):
"""
_testing: disables reloading of the lookup table to make testing
possible.
"""
self.lookup, self.offset = None, None
self.final = None
self._testing = _testing
def reset(self):
self.lookup = None
self.offset = -1
def complete(self, txt):
"""
Returns the next completion for txt, or None if there is no
completion.
"""
path = os.path.expanduser(txt)
if not self.lookup:
if not self._testing:
# Lookup is a set of (display value, actual value) tuples.
self.lookup = []
if os.path.isdir(path):
files = glob.glob(os.path.join(path, "*"))
prefix = txt
else:
files = glob.glob(path + "*")
prefix = os.path.dirname(txt)
prefix = prefix or "./"
for f in files:
display = os.path.join(prefix, os.path.basename(f))
if os.path.isdir(f):
display += "/"
self.lookup.append((display, f))
if not self.lookup:
self.final = path
return path
self.lookup.sort()
self.offset = -1
self.lookup.append((txt, txt))
self.offset += 1
if self.offset >= len(self.lookup):
self.offset = 0
ret = self.lookup[self.offset]
self.final = ret[1]
return ret[0]
class PathEdit(urwid.Edit, _PathCompleter):
def __init__(self, *args, **kwargs):
urwid.Edit.__init__(self, *args, **kwargs)
_PathCompleter.__init__(self)
def keypress(self, size, key):
if key == "tab":
comp = self.complete(self.get_edit_text())
self.set_edit_text(comp)
self.set_edit_pos(len(comp))
else:
self.reset()
return urwid.Edit.keypress(self, size, key)
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