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[6fe32e]: plugins / interpreter.py Maximize Restore History

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interpreter.py    629 lines (552 with data), 21.5 kB

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'''
If MyShell is passed a boolean true filter value, it will attempt to parse
lines recieved as if it were recieving Python. This allows you to add and
change code you want sent to the interpreter until you get it right. When a
complete "command" is ready to be sent to the underlying shell, PyPE will
attempt to interact with the underlying Python shell as you would. Sometimes
this doesn't work quite as well as one would hope, and there are extra '...'
and '>>>' which make it to the Python shell. This shouldn't affect the actual
execution of the code you send to the Python shell, just what you see.
If you don't like this buffering, etc., you can run the command shell (pass a
boolean false filter value), which only buffers a single line at a time.
Whenever the user hits "enter", the current command line is immediately sent
to the underlying shell. This allows you to use a standard Python shell,
without buffering (you get the actual command-line interaction) via:
python -u -i -c ""
Note that for some reason, the 'python -u' doesn't work. Your guess is as
good as mine as to why this is.
'''
import sys
if __name__ == '__main__':
if not hasattr(sys, 'frozen'):
import wxversion;wxversion.ensureMinimal('2.6')
sys.ps1 = '>>> '
sys.ps2 = '... '
sys.ps3 = '<-- '
import keyword
import code
import new
import os
from codeop import compile_command
import atexit
import wx
import traceback
from wx import stc
from wx.py.editwindow import FACES
from wx.py.shell import NAVKEYS, Shell
import shell
def unimpl_factory(name):
def _(*args, **kwargs):
print >>sys.__stdout__, name
return _
remote = []
def KillProcess():
for i in remote:
i.Kill('SIGKILL')
atexit.register(KillProcess)
print_transfer = 0
pushlines_t = 20
poll_t = 50
update_t = 100
def partition(st, sep):
if sep in st:
p = st.find(sep)
return st[:p], sep, st[p+len(sep):]
return st, '', ''
if sys.platform == 'win32':
prefix = os.environ.get("COMSPEC", "cmd.exe")
if " " in prefix:
prefix = '"%s"'%prefix
prefix += " /c "
else:
prefix = "/bin/sh -c "
def rsplit(st):
st = list(st)
st.reverse()
st = list(''.join(st).split(None, 1)[1])
st.reverse()
return ''.join(st)
def spliti(string, sep):
r = []
start = 0
end = string.find(sep)
while end > -1:
r.append(string[start:end+len(sep)])
start += len(r[-1])
end = string.find(sep, start)
r.append(string[start:])
return r
unimplemented = ''.split()
cpy = '''
getCommand getMultilineCommand lstripPrompt OnKeyDown replaceFromHistory
OnHistoryReplace OnHistoryInsert clearCommand Copy CopyWithPrompts
CopyWithPromptsPrefixed _clip OnHistorySearch'''.split()
pypecopy = '''
GetSaveState jump GetText SetText Undo Redo changeStyle pos_ch
do'''.split()
pypeprefix = '''SetSaveState'''.split()
console_help = '''import sys;print 'Python %s on %s\\n%s'%(sys.version,\
sys.platform, 'Type \\'help\\', \\'copyright\\', \\'credits\\' or \\'license\\'\
for more information.');sys.__stdout__ = sys.stdout = sys.__stderr__;del sys;\
import __builtin__;__builtin__.quit = __builtin__.exit = \
'use Ctrl-Break to restart *this* interpreter';del __builtin__;'''
encode_error = '''\
UnicodeEncodeError: '%s' codec cannot encode characters from line %i column \
%i to line %i column %i of the input: %s
'''
pypestc = None
class MyShell(stc.StyledTextCtrl):
if 1:
dirty = 0
cached = [], [], {}, []
def __init__(self, parent, id, root, trees, filter=1):
stc.StyledTextCtrl.__init__(self, parent, id)
global pypestc
if not pypestc:
if not __name__ == '__main__':
import __main__
pypestc = __main__.PythonSTC
else:
class _pypestc:
pass
pypestc = _pypestc
if trees:
self.tree1, self.tree2 = trees
self.root = root
self.parent = parent
self.filter = filter
self._config()
self.promptPosEnd = 0
for i in unimplemented:
setattr(self, i, unimpl_factory(i))
self.restart = 0
self.more = False
self.Restart(None)
for name in cpy:
setattr(self, name, new.instancemethod(getattr(Shell, name).im_func, self, self.__class__))
for name in pypecopy:
if not hasattr(pypestc, name):
continue
setattr(self, name, new.instancemethod(getattr(pypestc, name).im_func, self, self.__class__))
for name in pypeprefix:
if not hasattr(pypestc, name):
continue
setattr(self, '_' + name, new.instancemethod(getattr(pypestc, name).im_func, self, self.__class__))
wx.EVT_KEY_DOWN(self, self.OnKeyDown)
wx.EVT_KEY_DOWN(self, self.OnKeyDown2)
wx.EVT_CHAR(self, self.OnChar)
self.scroll = 1
self.history = []
self.historyIndex = -1
self.queue = []
self.expect = ''
self.waiting_for = 0
wx.FutureCall(pushlines_t, self.pushlines)
wx.FutureCall(poll_t, self.OnPoll)
self.MakeClean = self.MakeDirty
wx.stc.StyledTextCtrl.SetText(self, "def foo():\n... pass")
def _config(self):
self.setStyles(FACES)
# Do we want to automatically pop up command completion options?
self.autoComplete = False
self.autoCompleteIncludeMagic = True
self.autoCompleteIncludeSingle = True
self.autoCompleteIncludeDouble = True
self.autoCompleteCaseInsensitive = True
self.autoCompleteAutoHide = False
# Do we want to automatically pop up command argument help?
self.autoCallTip = False
try:
self.SetEndAtLastLine(False)
except AttributeError:
pass
def SetSaveState(self, state):
state['FOLD'] = state['BM'] = []
self._SetSaveState(state)
def kill(self):
self.restart = 1
self.remote.Kill("SIGKILL")
def clear(self):
self.ClearAll()
self.more = 0
self.promptPosEnd = 0
self.push('', 0)
def setStyles(self, faces):
"""Configure font size, typeface and color for lexer."""
# Default style
self.StyleSetSpec(stc.STC_STYLE_DEFAULT,
"face:%(mono)s,size:%(size)d,back:%(backcol)s" % \
faces)
self.StyleClearAll()
# Built in styles
self.StyleSetSpec(stc.STC_STYLE_LINENUMBER,
"back:#C0C0C0,face:%(mono)s,size:%(lnsize)d" % faces)
self.StyleSetSpec(stc.STC_STYLE_CONTROLCHAR,
"face:%(mono)s" % faces)
self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT,
"fore:#0000FF,back:#FFFF88")
self.StyleSetSpec(stc.STC_STYLE_BRACEBAD,
"fore:#FF0000,back:#FFFF88")
# Python styles
self.StyleSetSpec(stc.STC_P_DEFAULT,
"face:%(mono)s" % faces)
self.StyleSetSpec(stc.STC_P_COMMENTLINE,
"fore:#007F00,face:%(mono)s" % faces)
self.StyleSetSpec(stc.STC_P_NUMBER,
"")
self.StyleSetSpec(stc.STC_P_STRING,
"fore:#7F007F,face:%(mono)s" % faces)
self.StyleSetSpec(stc.STC_P_CHARACTER,
"fore:#7F007F,face:%(mono)s" % faces)
self.StyleSetSpec(stc.STC_P_WORD,
"fore:#00007F,bold")
self.StyleSetSpec(stc.STC_P_TRIPLE,
"fore:#7F0000")
self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE,
"fore:#000033,back:#FFFFE8")
self.StyleSetSpec(stc.STC_P_CLASSNAME,
"fore:#0000FF,bold")
self.StyleSetSpec(stc.STC_P_DEFNAME,
"fore:#007F7F,bold")
self.StyleSetSpec(stc.STC_P_OPERATOR,
"")
self.StyleSetSpec(stc.STC_P_IDENTIFIER,
"")
self.StyleSetSpec(stc.STC_P_COMMENTBLOCK,
"fore:#7F7F7F")
self.StyleSetSpec(stc.STC_P_STRINGEOL,
"fore:#000000,face:%(mono)s,back:#E0C0E0,eolfilled" % faces)
def EnsureCaretVisible(self):
if self.scroll:
stc.StyledTextCtrl.EnsureCaretVisible(self)
def GetSelection(self):
return self.GetCurrentPos(), self.GetAnchor()
def SetSelection(self, cp, an):
self.SetCurrentPos(cp)
self.SetAnchor(an)
self.ScrollToColumn(0)
def real_poll(self, input=''):
#todo: fix for unicode
o = self.remote.Poll(input)
sc = bool(o[0] or o[1])
if sc:
for i in (o[1], o[0]):
while self.waiting_for > 1 and i.startswith(sys.ps2):
i = i[len(sys.ps2):]
self.waiting_for -= 1
if print_transfer==1: print "got ps2"
if not i:
continue
if self.waiting_for and i.startswith(sys.ps1):
self.write(sys.ps1)
i = i[len(sys.ps1):]
if print_transfer==1: print "got ps1"
self.waiting_for = 0
if i:
self.write(i)
self.EnsureCaretVisible()
self.ScrollToColumn(0)
self.EmptyUndoBuffer()
def OnPoll(self, evt=None):
if hasattr(self, 'remote'):
self.real_poll('')
wx.FutureCall(poll_t, self.OnPoll)
def push(self, command, remember=1):
if remember:
c = command
if not self.filter:
c = c.rstrip('\r\n')
self.history.insert(0, c)
self.historyIndex = -1
if print_transfer==1: print '-->', repr(command)
command = command.rstrip(os.linesep)
x = command.split('\n')
self.waiting_for = len(x) + 1
if len(x) > 1:
x.append('')
x.append('')
if print_transfer==1: print "need", self.waiting_for
self.real_poll('\n'.join(x))
def insertLineBreak(self):
if self.CanEdit():
self.ReplaceSelection(os.linesep)
self.more = self.filter
self.prompt()
def prompt(self):
if self.filter:
skip = False
if self.more:
prompt = str(sys.ps2)
else:
prompt = str(sys.ps1)
pos = self.GetCurLine()[1]
if pos > 0:
self.AddText(os.linesep)
if not self.more:
self.promptPosEnd = self.GetCurrentPos()
if not skip:
self.AddText(prompt)
if not self.more:
self.promptPosEnd = self.GetCurrentPos()
# Keep the undo feature from undoing previous responses.
self.EmptyUndoBuffer()
self.EnsureCaretVisible()
self.ScrollToColumn(0)
def write(self, data):
if not data:
return
if print_transfer==1: print '<--', len(data), repr(data)
pos, anc = self.GetSelection()
lp = self.promptPosEnd
x = self.GetTextLength() #to handle unicode and line endings
self.AddText(data)
ld = self.GetTextLength()-x #to handle unicode and line endings
self.promptPosEnd += ld
self.SetSelection(pos+ld, anc+ld)
def processLine(self):
thepos = self.GetCurrentPos()
startpos = self.promptPosEnd
endpos = self.GetTextLength()
if not self.filter:
tosend = self.GetTextRange(startpos, endpos) + '\n'
self.AddText('\n')
self.promptPosEnd = endpos + 1
self.SetCurrentPos(self.promptPosEnd)
self.push(tosend)
return
ps2 = str(sys.ps2)
# If they hit RETURN inside the current command, execute the
# command.
if self.CanEdit():
self.SetCurrentPos(endpos)
self.more = 0
command = self.GetTextRange(startpos, endpos)
lines = command.split(os.linesep + ps2)
command = '\n'.join(lines)
if startpos < thepos < endpos:
self.more = 1
self.SetCurrentPos(thepos)
self.prompt()
return
try:
command = command.encode('ascii')
except UnicodeEncodeError, why:
self.AddText(os.linesep)
more = 0
ls = command.count('\n', 0, why.start) + 1
lsc = command.rfind('\n', 0, why.start)
if lsc == -1:
lsc = why.start
else:
lsc = why.start - lsc
le = command.count('\n', why.start, why.end-1) + ls
lec = command.rfind('\n', 0, why.end)
if lec == -1:
lec = why.end
else:
lec = why.end - lec
self.AddText(encode_error%(why.encoding, ls, lsc, le, lec, why.reason))
self.promptPosEnd = self.GetTextLength()
self.prompt()
self.promptPosEnd = self.GetTextLength()
return
try:
code = compile_command(command)
except (OverflowError, SyntaxError, ValueError):
self.AddText(os.linesep)
self.more = 0
self.promptPosEnd = self.GetTextLength()
self.showsyntaxerror()
self.prompt()
self.promptPosEnd = self.GetTextLength()
return
if code is not None:
self.AddText(os.linesep)
self.more = 0
s = self.GetSelection()
self.SetSelection(startpos, self.GetTextLength())
self.SetSelection(*s)
self.promptPosEnd = self.GetTextLength()
self.push(command)
else:
self.more = 1
self.SetCurrentPos(thepos)
self.prompt()
# Or replace the current command with the other command.
else:
# If the line contains a command (even an invalid one).
if self.getCommand(rstrip=False):
command = self.getMultilineCommand()
self.clearCommand()
self.SetSelection(startpos, startpos)
self.AddText(command)
# Otherwise, put the cursor back where we started.
else:
self.SetCurrentPos(thepos)
self.SetAnchor(thepos)
def showsyntaxerror(self, filename=None):
type, value, sys.last_traceback = sys.exc_info()
sys.last_type = type
sys.last_value = value
if filename and type is SyntaxError:
# Work hard to stuff the correct filename in the exception
try:
msg, (dummy_filename, lineno, offset, line) = value
except:
# Not the format we expect; leave it alone
pass
else:
# Stuff in the right filename
value = SyntaxError(msg, (filename, lineno, offset, line))
sys.last_value = value
list = traceback.format_exception_only(type, value)
map(self.write, list)
def Restart(self, evt):
#we start up the console in the future so that if we get a Restart
#call from the subprocess ending, we can *hopefully* pull the
#exception from the subprocess shell
try:
if not self.restart:
self.restart = 1
wx.FutureCall(100, self._Restart, evt)
except:
pass
def _Restart(self, evt):
global remote
if evt:
print "Process Ended, pid:%s, exitCode: %s"%(evt.GetPid(), evt.GetExitCode())
remote.remove(self.remote)
self.queue = []
if self.filter:
self.remote = shell.process(self, prefix + 'python -u -i -c "%s"'%console_help, self.Restart)
else:
self.remote = shell.process(self, rsplit(prefix), self.Restart)
remote.append(self.remote)
self.restart = 0
def OnChar(self, event):
# Prevent modification of previously submitted
# commands/responses.
if not self.CanEdit():
return
key = event.KeyCode()
# Return (Enter) needs to be ignored in this handler.
if key == wx.WXK_RETURN:
pass
else:
# Allow the normal event handling to take place.
event.Skip()
def OnKeyDown2(self, event):
## print event.GetEventType()
key = event.KeyCode()
controlDown = event.ControlDown()
if controlDown and key in (wx.WXK_CANCEL, wx.WXK_PAUSE):
self.clearCommand()
if not self.remote.process._stdin_:
how = 'SIGKILL'
self.write("#Trying to terminate with SIGKILL\n")
else:
how = shell.close_stdin
self.write("#Closing subshell STDIN\n")
self.remote.Kill(how)
elif not controlDown and key in (wx.WXK_CANCEL, wx.WXK_PAUSE):
self.scroll ^= 1
elif not self.filter and key in (wx.WXK_UP, wx.WXK_DOWN):
self.OnHistoryReplace(step={wx.WXK_DOWN:-1,wx.WXK_UP:1}[key])
elif controlDown and key in (wx.WXK_RETURN, wx.WXK_NUMPAD_ENTER):
if not self.filter:
return self.processLine()
self.AddText('\n')
command = self.getcmd()
self.push(command)
#todo: add better HOME/END handling
elif key == wx.WXK_NUMPAD_ENTER:
#emulate a standard enter keypress
a = wx.KeyEvent(eventType=wx.wxEVT_KEY_DOWN)
a.m_keyCode = wx.WXK_RETURN
for i in ('m_altDown', 'm_controlDown', 'm_metaDown', 'm_rawFlags',
'm_scanCode', 'm_shiftDown', 'm_x', 'm_y'):
setattr(a, i, getattr(event, i))
wx.PostEvent(self, a)
else:
event.Skip()
def getcmd(self):
thepos = self.GetCurrentPos()
startpos = self.promptPosEnd
endpos = self.GetTextLength()
ps2 = str(sys.ps2)
self.SetCurrentPos(endpos)
self.promptPosEnd = endpos
self.more = 0
command = self.GetTextRange(startpos, endpos)
return '\n'.join(command.split(os.linesep + ps2))
def GetReadOnly(self):
return min(self.GetSelection()) < self.promptPosEnd
def CanCopy(self):
return self.GetSelectionStart() != self.GetSelectionEnd()
def CanCut(self):
return self.CanCopy() and self.CanEdit()
def CanEdit(self):
return not self.GetReadOnly()
def CanPaste(self):
return stc.StyledTextCtrl.CanPaste(self) and self.CanEdit()
def Paste(self):
success = False
do = wx.TextDataObject()
if wx.TheClipboard.Open():
success = wx.TheClipboard.GetData(do)
wx.TheClipboard.Close()
if not success:
return
self.ReplaceSelection('')
self.queue.extend(spliti(do.GetText(), '\n'))
def Cut(self):
if self.CanCut:
stc.StyledTextCtrl.Cut(self)
def pushlines(self):
if not self.waiting_for and self.queue:
x = self.queue.pop(0)
self.AddText(x.rstrip('\r\n'))
if x[-1:] == '\n':
self.processLine()
wx.FutureCall(pushlines_t, self.pushlines)
def MakeDirty(self, e=None):
f = self.filename
if f == ' ':
f = '<%s %i>'%(('Command Shell', 'Python Shell')[self.filter], self.NEWDOCUMENT)
c = 0
for i in self.root.control:
if i == self:
break
c += 1
self.root.control.SetPageText(c, f)
self.root.redrawvisible(self)
def DeleteSelection(self, e=None):
range = self.GetSelection()
mi = min(range)
ma = max(range)
if ma <= self.promptPosEnd:
self.promptPosEnd -= ma-mi
elif mi < self.promptPosEnd:
self.promptPosEnd = mi
stc.StyledTextCtrl.DeleteBack(self)
#
class MyShellFrame(wx.Frame):
def __init__(self):
"""Create ShellFrame instance."""
wx.Frame.__init__(self, None, -1, "Standalone PyPE Shell", size=(800, 400))
self.shell = MyShell(self, -1, self, None, 1)
self.CreateStatusBar(2)
self.GetStatusBar().SetStatusWidths([-1, 95])
# Override the shell so that status messages go to the status bar.
self.shell.setStatusText = self.SetStatusText
def main():
app = wx.App(0)
wx.InitAllImageHandlers()
frame = MyShellFrame()
frame.Show()
app.SetTopWindow(frame)
frame.shell.SetFocus()
app.MainLoop()
if __name__ == '__main__':
print_transfer = 0
main()