Mini Kabibi Habibi
#
# pyconsole.py
#
# Copyright (C) 2004-2006 by Yevgen Muntyan <muntyan@math.tamu.edu>
# Portions of code by Geoffrey French.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public version 2.1 as
# published by the Free Software Foundation.
#
# See COPYING.lib file that comes with this distribution for full text
# of the license.
#
# This module 'runs' python interpreter in a TextView widget.
# The main class is Console, usage is:
# Console(locals=None, banner=None, completer=None, use_rlcompleter=True, start_script='') -
# it creates the widget and 'starts' interactive session; see the end
# of this file. If start_script is not empty, it pastes it as it was
# entered from keyboard.
#
# Console has "command" signal which is emitted when code is about to
# be executed. You may connect to it using console.connect or
# console.connect_after to get your callback ran before or after the
# code is executed.
#
# To modify output appearance, set attributes of console.stdout_tag and
# console.stderr_tag.
#
# Console may subclass a type other than gtk.TextView, to allow syntax
# highlighting and stuff,
# e.g.:
# console_type = pyconsole.ConsoleType(moo.edit.TextView)
# console = console_type(use_rlcompleter=False, start_script="import moo\nimport gtk\n")
#
# This widget is not a replacement for real terminal with python running
# inside: GtkTextView is not a terminal.
# The use case is: you have a python program, you create this widget,
# and inspect your program interiors.
import gtk
import gtk.gdk as gdk
import gobject
import pango
import gtk.keysyms as _keys
import code
import sys
import keyword
import re
# commonprefix() from posixpath
def _commonprefix(m):
"Given a list of pathnames, returns the longest common leading component"
if not m: return ''
prefix = m[0]
for item in m:
for i in range(len(prefix)):
if prefix[:i+1] != item[:i+1]:
prefix = prefix[:i]
if i == 0:
return ''
break
return prefix
class _ReadLine(object):
class Output(object):
def __init__(self, console, tag_name):
object.__init__(self)
self.buffer = console.get_buffer()
self.tag_name = tag_name
def write(self, text):
pos = self.buffer.get_iter_at_mark(self.buffer.get_insert())
self.buffer.insert_with_tags_by_name(pos, text, self.tag_name)
class History(object):
def __init__(self):
object.__init__(self)
self.items = ['']
self.ptr = 0
self.edited = {}
def commit(self, text):
if text and self.items[-1] != text:
self.items.append(text)
self.ptr = 0
self.edited = {}
def get(self, dir, text):
if len(self.items) == 1:
return None
if text != self.items[self.ptr]:
self.edited[self.ptr] = text
elif self.edited.has_key(self.ptr):
del self.edited[self.ptr]
self.ptr = self.ptr + dir
if self.ptr >= len(self.items):
self.ptr = 0
elif self.ptr < 0:
self.ptr = len(self.items) - 1
try:
return self.edited[self.ptr]
except KeyError:
return self.items[self.ptr]
def __init__(self, quit_func=None):
object.__init__(self)
self.quit_func = quit_func
self.set_wrap_mode(gtk.WRAP_CHAR)
self.modify_font(pango.FontDescription("Monospace"))
self.buffer = self.get_buffer()
self.buffer.connect("insert-text", self.on_buf_insert)
self.buffer.connect("delete-range", self.on_buf_delete)
self.buffer.connect("mark-set", self.on_buf_mark_set)
self.do_insert = False
self.do_delete = False
self.stdout_tag = self.buffer.create_tag("stdout", foreground="#006000")
self.stderr_tag = self.buffer.create_tag("stderr", foreground="#B00000")
self._stdout = _ReadLine.Output(self, "stdout")
self._stderr = _ReadLine.Output(self, "stderr")
self.cursor = self.buffer.create_mark("cursor",
self.buffer.get_start_iter(),
False)
insert = self.buffer.get_insert()
self.cursor.set_visible(True)
insert.set_visible(False)
self.ps = ''
self.in_raw_input = False
self.in_modal_raw_input = False
self.run_on_raw_input = None
self.tab_pressed = 0
self.history = _ReadLine.History()
self.nonword_re = re.compile("[^\w\._]")
def freeze_undo(self):
try: self.begin_not_undoable_action()
except: pass
def thaw_undo(self):
try: self.end_not_undoable_action()
except: pass
def raw_input(self, ps=None):
'''Show prompt 'ps' and enter input mode until the current input
is committed.'''
if ps:
self.ps = ps
else:
self.ps = ''
iter = self.buffer.get_iter_at_mark(self.buffer.get_insert())
if ps:
self.freeze_undo()
self.buffer.insert(iter, self.ps)
self.thaw_undo()
self.__move_cursor_to(iter)
self.scroll_to_mark(self.cursor, 0.2)
self.in_raw_input = True
if self.run_on_raw_input:
run_now = self.run_on_raw_input
self.run_on_raw_input = None
self.buffer.insert_at_cursor(run_now + '\n')
def modal_raw_input(self, text):
'''Starts raw input in modal mode. The event loop is spinned until
the input is committed. Returns the text entered after the prompt.'''
orig_ps = self.ps
self.raw_input(text)
self.in_modal_raw_input = True
while self.in_modal_raw_input:
gtk.main_iteration()
self.ps = orig_ps
self.in_modal_raw_input = False
self.in_raw_input = False
return self.modal_raw_input_result
def modal_input(self, text):
return eval(self.modal_raw_input(text))
# Each time the insert mark is modified, move the cursor to it.
def on_buf_mark_set(self, buffer, iter, mark):
if mark is not buffer.get_insert():
return
start = self.__get_start()
end = self.__get_end()
if iter.compare(self.__get_start()) >= 0 and \
iter.compare(self.__get_end()) <= 0:
buffer.move_mark_by_name("cursor", iter)
self.scroll_to_mark(self.cursor, 0.2)
def __insert(self, iter, text):
self.do_insert = True
self.buffer.insert(iter, text)
self.do_insert = False
# Make sure that text insertions while in text input mode are properly
# committed to the history.
def on_buf_insert(self, buf, iter, text, len):
# Bail out if not in input mode.
if not self.in_raw_input or self.do_insert or not len:
return
buf.stop_emission("insert-text")
lines = text.splitlines()
need_eol = False
for l in lines:
if need_eol:
self._commit()
iter = self.__get_cursor()
else:
cursor = self.__get_cursor()
if iter.compare(self.__get_start()) < 0:
iter = cursor
elif iter.compare(self.__get_end()) > 0:
iter = cursor
else:
self.__move_cursor_to(iter)
need_eol = True
self.__insert(iter, l)
self.__move_cursor(0)
def __delete(self, start, end):
self.do_delete = True
self.buffer.delete(start, end)
self.do_delete = False
def on_buf_delete(self, buf, start, end):
if not self.in_raw_input or self.do_delete:
return
buf.stop_emission("delete-range")
start.order(end)
line_start = self.__get_start()
line_end = self.__get_end()
if start.compare(line_end) > 0:
return
if end.compare(line_start) < 0:
return
self.__move_cursor(0)
if start.compare(line_start) < 0:
start = line_start
if end.compare(line_end) > 0:
end = line_end
self.__delete(start, end)
# We overload the key press event handler to handle "special keys"
# when in input mode to make history browsing, completions, etc. work.
def do_key_press_event(self, event, parent_type):
if not self.in_raw_input:
return parent_type.do_key_press_event(self, event)
tab_pressed = self.tab_pressed
self.tab_pressed = 0
handled = True
state = event.state & (gdk.SHIFT_MASK |
gdk.CONTROL_MASK |
gdk.MOD1_MASK)
keyval = event.keyval
if not state:
if keyval == _keys.Escape:
pass
elif keyval == _keys.Return:
self._commit()
elif keyval == _keys.Up:
self.__history(-1)
elif keyval == _keys.Down:
self.__history(1)
elif keyval == _keys.Left:
self.__move_cursor(-1)
elif keyval == _keys.Right:
self.__move_cursor(1)
elif keyval == _keys.Home:
self.__move_cursor(-10000)
elif keyval == _keys.End:
self.__move_cursor(10000)
elif keyval == _keys.Tab:
cursor = self.__get_cursor()
if cursor.starts_line():
handled = False
else:
cursor.backward_char()
if cursor.get_char().isspace():
handled = False
else:
self.tab_pressed = tab_pressed + 1
self.__complete()
else:
handled = False
elif state == gdk.CONTROL_MASK:
if keyval == _keys.u:
start = self.__get_start()
end = self.__get_cursor()
self.__delete(start, end)
elif keyval == _keys.d:
if self.quit_func:
self.quit_func()
else:
handled = False
else:
handled = False
# Handle ordinary keys
if not handled:
return parent_type.do_key_press_event(self, event)
else:
return True
def __history(self, dir):
text = self._get_line()
new_text = self.history.get(dir, text)
if not new_text is None:
self.__replace_line(new_text)
self.__move_cursor(0)
self.scroll_to_mark(self.cursor, 0.2)
def __get_cursor(self):
'''Returns an iterator at the current cursor position.'''
return self.buffer.get_iter_at_mark(self.cursor)
def __get_start(self):
'''Returns an iterator at the start of the input on the current
cursor line.'''
iter = self.__get_cursor()
iter.set_line(iter.get_line())
iter.forward_chars(len(self.ps))
return iter
def __get_end(self):
'''Returns an iterator at the end of the cursor line.'''
iter = self.__get_cursor()
if not iter.ends_line():
iter.forward_to_line_end()
return iter
def __get_text(self, start, end):
'''Get text between 'start' and 'end' markers.'''
return self.buffer.get_text(start, end, False)
def __move_cursor_to(self, iter):
self.buffer.place_cursor(iter)
self.buffer.move_mark_by_name("cursor", iter)
def __move_cursor(self, howmany):
iter = self.__get_cursor()
end = self.__get_cursor()
if not end.ends_line():
end.forward_to_line_end()
line_len = end.get_line_offset()
move_to = iter.get_line_offset() + howmany
move_to = min(max(move_to, len(self.ps)), line_len)
iter.set_line_offset(move_to)
self.__move_cursor_to(iter)
def __delete_at_cursor(self, howmany):
iter = self.__get_cursor()
end = self.__get_cursor()
if not end.ends_line():
end.forward_to_line_end()
line_len = end.get_line_offset()
erase_to = iter.get_line_offset() + howmany
if erase_to > line_len:
erase_to = line_len
elif erase_to < len(self.ps):
erase_to = len(self.ps)
end.set_line_offset(erase_to)
self.__delete(iter, end)
def __get_width(self):
'''Estimate the number of characters that will fit in the area
currently allocated to this widget.'''
if not (self.flags() & gtk.REALIZED):
return 80
context = self.get_pango_context()
metrics = context.get_metrics(context.get_font_description(),
context.get_language())
pix_width = metrics.get_approximate_char_width()
return self.allocation.width * pango.SCALE / pix_width
def __print_completions(self, completions):
line_start = self.__get_text(self.__get_start(), self.__get_cursor())
line_end = self.__get_text(self.__get_cursor(), self.__get_end())
iter = self.buffer.get_end_iter()
self.__move_cursor_to(iter)
self.__insert(iter, "\n")
width = max(self.__get_width(), 4)
max_width = max([len(s) for s in completions])
n_columns = max(int(width / (max_width + 1)), 1)
col_width = int(width / n_columns)
total = len(completions)
col_length = total / n_columns
if total % n_columns:
col_length = col_length + 1
col_length = max(col_length, 1)
if col_length == 1:
n_columns = total
col_width = width / total
for i in range(col_length):
for j in range(n_columns):
ind = i + j*col_length
if ind < total:
if j == n_columns - 1:
n_spaces = 0
else:
n_spaces = col_width - len(completions[ind])
self.__insert(iter, completions[ind] + " " * n_spaces)
self.__insert(iter, "\n")
self.__insert(iter, "%s%s%s" % (self.ps, line_start, line_end))
iter.set_line_offset(len(self.ps) + len(line_start))
self.__move_cursor_to(iter)
self.scroll_to_mark(self.cursor, 0.2)
def __complete(self):
text = self.__get_text(self.__get_start(), self.__get_cursor())
start = ''
word = text
nonwords = self.nonword_re.findall(text)
if nonwords:
last = text.rfind(nonwords[-1]) + len(nonwords[-1])
start = text[:last]
word = text[last:]
completions = self.complete(word)
if completions:
prefix = _commonprefix(completions)
if prefix != word:
start_iter = self.__get_start()
start_iter.forward_chars(len(start))
end_iter = start_iter.copy()
end_iter.forward_chars(len(word))
self.__delete(start_iter, end_iter)
self.__insert(end_iter, prefix)
elif self.tab_pressed > 1:
self.freeze_undo()
self.__print_completions(completions)
self.thaw_undo()
self.tab_pressed = 0
def complete(self, text):
return None
def _get_line(self):
'''Return the current input behind the prompt.'''
start = self.__get_start()
end = self.__get_end()
return self.buffer.get_text(start, end, False)
def __replace_line(self, new_text):
'''Replace the current input with 'new_text' '''
start = self.__get_start()
end = self.__get_end()
self.__delete(start, end)
self.__insert(end, new_text)
def _commit(self):
'''Commit the input entered on the current line.'''
# Find iterator and end of cursor line.
end = self.__get_cursor()
if not end.ends_line():
end.forward_to_line_end()
# Get text at current line.
text = self._get_line()
# Move cursor to the end of the line, insert new line.
self.__move_cursor_to(end)
self.freeze_undo()
self.__insert(end, "\n")
self.history.commit(text)
if self.in_modal_raw_input:
self.in_modal_raw_input = False
self.modal_raw_input_result = text
else:
self.in_raw_input = False
self.do_raw_input(text)
self.thaw_undo()
def do_raw_input(self, text):
pass
class _Console(_ReadLine, code.InteractiveInterpreter):
def __init__(self, locals=None, banner=None,
completer=None, use_rlcompleter=True,
start_script=None, quit_func=None):
_ReadLine.__init__(self, quit_func)
code.InteractiveInterpreter.__init__(self, locals)
self.locals["__console__"] = self
# The builtin raw_input function reads from stdin, we don't want
# this. Therefore, replace this function with our own modal raw
# input function.
exec "import __builtin__" in self.locals
self.locals['__builtin__'].__dict__['raw_input'] = lambda text='': self.modal_raw_input(text)
self.locals['__builtin__'].__dict__['input'] = lambda text='': self.modal_input(text)
self.start_script = start_script
self.completer = completer
self.banner = banner
if not self.completer and use_rlcompleter:
try:
import rlcompleter
self.completer = rlcompleter.Completer()
except ImportError:
pass
self.ps1 = ">>> "
self.ps2 = "... "
self.__start()
self.run_on_raw_input = start_script
self.raw_input(self.ps1)
def __start(self):
self.cmd_buffer = ""
self.freeze_undo()
self.thaw_undo()
self.do_delete = True
self.buffer.set_text("")
self.do_delete = False
if self.banner:
iter = self.buffer.get_start_iter()
self.buffer.insert_with_tags_by_name(iter, self.banner, "stdout")
if not iter.starts_line():
self.buffer.insert(iter, "\n")
def clear(self, start_script=None):
if start_script is None:
start_script = self.start_script
else:
self.start_script = start_script
self.__start()
self.run_on_raw_input = start_script
self.raw_input(self.ps1)
def do_raw_input(self, text):
if self.cmd_buffer:
cmd = self.cmd_buffer + "\n" + text
else:
cmd = text
saved_stdout, saved_stderr = sys.stdout, sys.stderr
sys.stdout, sys.stderr = self._stdout, self._stderr
if self.runsource(cmd):
self.cmd_buffer = cmd
ps = self.ps2
else:
self.cmd_buffer = ''
ps = self.ps1
sys.stdout, sys.stderr = saved_stdout, saved_stderr
self.raw_input(ps)
def do_command(self, code):
try:
eval(code, self.locals)
except SystemExit:
if self.quit_func:
self.quit_func()
else:
raise
except:
self.showtraceback()
def runcode(self, code):
if gtk.pygtk_version[1] < 8:
self.do_command(code)
else:
self.emit("command", code)
def complete_attr(self, start, end):
try:
obj = eval(start, self.locals)
strings = dir(obj)
if end:
completions = {}
for s in strings:
if s.startswith(end):
completions[s] = None
completions = completions.keys()
else:
completions = strings
completions.sort()
return [start + "." + s for s in completions]
except:
return None
def complete(self, text):
if self.completer:
completions = []
i = 0
try:
while 1:
s = self.completer.complete(text, i)
if s:
completions.append(s)
i = i + 1
else:
completions.sort()
return completions
except NameError:
return None
dot = text.rfind(".")
if dot >= 0:
return self.complete_attr(text[:dot], text[dot+1:])
completions = {}
strings = keyword.kwlist
if self.locals:
strings.extend(self.locals.keys())
try: strings.extend(eval("globals()", self.locals).keys())
except: pass
try:
exec "import __builtin__" in self.locals
strings.extend(eval("dir(__builtin__)", self.locals))
except:
pass
for s in strings:
if s.startswith(text):
completions[s] = None
completions = completions.keys()
completions.sort()
return completions
def ReadLineType(t=gtk.TextView):
class readline(t, _ReadLine):
def __init__(self, *args, **kwargs):
t.__init__(self)
_ReadLine.__init__(self, *args, **kwargs)
def do_key_press_event(self, event):
return _ReadLine.do_key_press_event(self, event, t)
gobject.type_register(readline)
return readline
def ConsoleType(t=gtk.TextView):
class console_type(t, _Console):
__gsignals__ = {
'command' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (object,)),
'key-press-event' : 'override'
}
def __init__(self, *args, **kwargs):
if gtk.pygtk_version[1] < 8:
gobject.GObject.__init__(self)
else:
t.__init__(self)
_Console.__init__(self, *args, **kwargs)
def do_command(self, code):
return _Console.do_command(self, code)
def do_key_press_event(self, event):
return _Console.do_key_press_event(self, event, t)
def get_default_size(self):
context = self.get_pango_context()
metrics = context.get_metrics(context.get_font_description(),
context.get_language())
width = metrics.get_approximate_char_width()
height = metrics.get_ascent() + metrics.get_descent()
# Default to a 80x40 console
width = pango.PIXELS(int(width * 80 * 1.05))
height = pango.PIXELS(height * 40)
return width, height
if gtk.pygtk_version[1] < 8:
gobject.type_register(console_type)
return console_type
ReadLine = ReadLineType()
Console = ConsoleType()
def _make_window():
window = gtk.Window()
window.set_title("pyconsole.py")
swin = gtk.ScrolledWindow()
swin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_ALWAYS)
window.add(swin)
console = Console(banner="Hello there!",
use_rlcompleter=False,
start_script="from gtk import *\n")
swin.add(console)
width, height = console.get_default_size()
sb_width, sb_height = swin.get_vscrollbar().size_request()
window.set_default_size(width + sb_width, height)
window.show_all()
if not gtk.main_level():
window.connect("destroy", gtk.main_quit)
gtk.main()
return console
if __name__ == '__main__':
if len(sys.argv) < 2 or sys.argv[1] != '-gimp':
_make_window()