forked from OSchip/llvm-project
131 lines
3.9 KiB
Python
131 lines
3.9 KiB
Python
##===-- commandwin.py ----------------------------------------*- Python -*-===##
|
|
##
|
|
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
# See https://llvm.org/LICENSE.txt for license information.
|
|
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
##
|
|
##===----------------------------------------------------------------------===##
|
|
|
|
import cui
|
|
import curses
|
|
import lldb
|
|
from itertools import islice
|
|
|
|
|
|
class History(object):
|
|
|
|
def __init__(self):
|
|
self.data = {}
|
|
self.pos = 0
|
|
self.tempEntry = ''
|
|
|
|
def previous(self, curr):
|
|
if self.pos == len(self.data):
|
|
self.tempEntry = curr
|
|
|
|
if self.pos < 0:
|
|
return ''
|
|
if self.pos == 0:
|
|
self.pos -= 1
|
|
return ''
|
|
if self.pos > 0:
|
|
self.pos -= 1
|
|
return self.data[self.pos]
|
|
|
|
def next(self):
|
|
if self.pos < len(self.data):
|
|
self.pos += 1
|
|
|
|
if self.pos < len(self.data):
|
|
return self.data[self.pos]
|
|
elif self.tempEntry != '':
|
|
return self.tempEntry
|
|
else:
|
|
return ''
|
|
|
|
def add(self, c):
|
|
self.tempEntry = ''
|
|
self.pos = len(self.data)
|
|
if self.pos == 0 or self.data[self.pos - 1] != c:
|
|
self.data[self.pos] = c
|
|
self.pos += 1
|
|
|
|
|
|
class CommandWin(cui.TitledWin):
|
|
|
|
def __init__(self, driver, x, y, w, h):
|
|
super(CommandWin, self).__init__(x, y, w, h, "Commands")
|
|
self.command = ""
|
|
self.data = ""
|
|
driver.setSize(w, h)
|
|
|
|
self.win.scrollok(1)
|
|
|
|
self.driver = driver
|
|
self.history = History()
|
|
|
|
def enterCallback(content):
|
|
self.handleCommand(content)
|
|
|
|
def tabCompleteCallback(content):
|
|
self.data = content
|
|
matches = lldb.SBStringList()
|
|
commandinterpreter = self.getCommandInterpreter()
|
|
commandinterpreter.HandleCompletion(
|
|
self.data, self.el.index, 0, -1, matches)
|
|
if matches.GetSize() == 2:
|
|
self.el.content += matches.GetStringAtIndex(0)
|
|
self.el.index = len(self.el.content)
|
|
self.el.draw()
|
|
else:
|
|
self.win.move(self.el.starty, self.el.startx)
|
|
self.win.scroll(1)
|
|
self.win.addstr("Available Completions:")
|
|
self.win.scroll(1)
|
|
for m in islice(matches, 1, None):
|
|
self.win.addstr(self.win.getyx()[0], 0, m)
|
|
self.win.scroll(1)
|
|
self.el.draw()
|
|
|
|
self.startline = self.win.getmaxyx()[0] - 2
|
|
|
|
self.el = cui.CursesEditLine(
|
|
self.win,
|
|
self.history,
|
|
enterCallback,
|
|
tabCompleteCallback)
|
|
self.el.prompt = self.driver.getPrompt()
|
|
self.el.showPrompt(self.startline, 0)
|
|
|
|
def handleCommand(self, cmd):
|
|
# enter!
|
|
self.win.scroll(1) # TODO: scroll more for longer commands
|
|
if cmd == '':
|
|
cmd = self.history.previous('')
|
|
elif cmd in ('q', 'quit'):
|
|
self.driver.terminate()
|
|
return
|
|
|
|
self.history.add(cmd)
|
|
ret = self.driver.handleCommand(cmd)
|
|
if ret.Succeeded():
|
|
out = ret.GetOutput()
|
|
attr = curses.A_NORMAL
|
|
else:
|
|
out = ret.GetError()
|
|
attr = curses.color_pair(3) # red on black
|
|
self.win.addstr(self.startline, 0, out + '\n', attr)
|
|
self.win.scroll(1)
|
|
self.el.showPrompt(self.startline, 0)
|
|
|
|
def handleEvent(self, event):
|
|
if isinstance(event, int):
|
|
if event == curses.ascii.EOT and self.el.content == '':
|
|
# When the command is empty, treat CTRL-D as EOF.
|
|
self.driver.terminate()
|
|
return
|
|
self.el.handleEvent(event)
|
|
|
|
def getCommandInterpreter(self):
|
|
return self.driver.getCommandInterpreter()
|