2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
131 lines
3.9 KiB
Python
131 lines
3.9 KiB
Python
##===-- commandwin.py ----------------------------------------*- Python -*-===##
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##
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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##
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##===----------------------------------------------------------------------===##
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import cui
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import curses
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import lldb
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from itertools import islice
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class History(object):
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def __init__(self):
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self.data = {}
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self.pos = 0
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self.tempEntry = ''
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def previous(self, curr):
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if self.pos == len(self.data):
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self.tempEntry = curr
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if self.pos < 0:
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return ''
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if self.pos == 0:
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self.pos -= 1
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return ''
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if self.pos > 0:
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self.pos -= 1
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return self.data[self.pos]
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def next(self):
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if self.pos < len(self.data):
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self.pos += 1
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if self.pos < len(self.data):
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return self.data[self.pos]
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elif self.tempEntry != '':
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return self.tempEntry
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else:
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return ''
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def add(self, c):
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self.tempEntry = ''
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self.pos = len(self.data)
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if self.pos == 0 or self.data[self.pos - 1] != c:
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self.data[self.pos] = c
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self.pos += 1
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class CommandWin(cui.TitledWin):
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def __init__(self, driver, x, y, w, h):
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super(CommandWin, self).__init__(x, y, w, h, "Commands")
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self.command = ""
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self.data = ""
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driver.setSize(w, h)
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self.win.scrollok(1)
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self.driver = driver
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self.history = History()
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def enterCallback(content):
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self.handleCommand(content)
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def tabCompleteCallback(content):
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self.data = content
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matches = lldb.SBStringList()
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commandinterpreter = self.getCommandInterpreter()
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commandinterpreter.HandleCompletion(
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self.data, self.el.index, 0, -1, matches)
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if matches.GetSize() == 2:
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self.el.content += matches.GetStringAtIndex(0)
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self.el.index = len(self.el.content)
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self.el.draw()
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else:
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self.win.move(self.el.starty, self.el.startx)
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self.win.scroll(1)
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self.win.addstr("Available Completions:")
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self.win.scroll(1)
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for m in islice(matches, 1, None):
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self.win.addstr(self.win.getyx()[0], 0, m)
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self.win.scroll(1)
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self.el.draw()
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self.startline = self.win.getmaxyx()[0] - 2
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self.el = cui.CursesEditLine(
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self.win,
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self.history,
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enterCallback,
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tabCompleteCallback)
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self.el.prompt = self.driver.getPrompt()
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self.el.showPrompt(self.startline, 0)
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def handleCommand(self, cmd):
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# enter!
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self.win.scroll(1) # TODO: scroll more for longer commands
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if cmd == '':
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cmd = self.history.previous('')
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elif cmd in ('q', 'quit'):
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self.driver.terminate()
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return
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self.history.add(cmd)
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ret = self.driver.handleCommand(cmd)
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if ret.Succeeded():
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out = ret.GetOutput()
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attr = curses.A_NORMAL
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else:
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out = ret.GetError()
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attr = curses.color_pair(3) # red on black
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self.win.addstr(self.startline, 0, out + '\n', attr)
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self.win.scroll(1)
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self.el.showPrompt(self.startline, 0)
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def handleEvent(self, event):
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if isinstance(event, int):
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if event == curses.ascii.EOT and self.el.content == '':
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# When the command is empty, treat CTRL-D as EOF.
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self.driver.terminate()
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return
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self.el.handleEvent(event)
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def getCommandInterpreter(self):
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return self.driver.getCommandInterpreter()
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