1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
|
##===-- 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()
|