def _onTab(self):
'''
Autocompletion logic is called here
'''
# TODO: autocomplete for raw menu
if self.inRawLineMode():
return
line = self._getLineStr()[:self._position] # take the line before the cursor
tokens = self._parseLine(line)
if not line.endswith(' ') and len(tokens)>0:
# if the cursor is after non-space, the last word is used
# as a hint for autocompletion
incomplete = tokens.pop()
else:
incomplete = ''
completions = self._context.suggest(tokens, incomplete)
if completions is None:
return
prefix = commonPrefix(completions)
if prefix != '':
self._paste(prefix)
elif len(completions) > 0:
term.writeln()
for variant in map(lambda c: c[1], completions):
term.write(variant + ' ')
term.writeln()
self._showPrompt()
self._showLine()
else:
term.bell()
def _setLine(self, line):
term.moveBack(self._position)
term.write(' ' * len(self._line))
term.moveBack(len(self._line))
# term.eraseLine()
term.write(''.join(line))
self._line = line
self._position = len(line)
def _showTail(self, retainPosition=True):
'''
reprint everything that should be after the cursor
'''
# term.savePosition()
strLine = self._getLineStr()
toWrite = strLine[self._position:]
term.write(toWrite)
if retainPosition:
term.moveBack(len(toWrite))
def _paste(self, text):
# term.savePosition()
tail = self._line[self._position:]
for c in text:
self._line.insert(self._position, c)
self._position += 1
term.write(text)
term.write(''.join(tail))
# term.restorePosition()
term.moveBack(len(tail))
def _parseLine(self, line=None):
if line is None:
line = self._getLineStr()
result = []
parser = shlex(line)
parser.whitespace_split = True
while True:
try:
token = parser.get_token()
except ValueError, ve:
term.write( str(ve) + '\n')
result = []
break
else:
if token == parser.eof:
break
result.append(token)
def _moveForward(self, steps=1):
for i in range(steps):
if self._position == len(self._line): term.bell()
term.write(self._line[self._position])
self._position += 1
def _showLine(self):
strLine = self._getLineStr()
term.write(strLine)
self._moveDelta(self._position - len(strLine))
def _showPrompt(self):
term.write(self._context.getPath() + ">>> ")
