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#!/usr/bin/env python
# Interactive Python-GTK Console
# Copyright (C), 1998 James Henstridge <james@daa.com.au>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# This module implements an interactive python session in a GTK window. To
# start the session, use the gtk_console command. Its specification is:
# gtk_console(namespace, title, copyright)
# where namespace is a dictionary representing the namespace of the session,
# title is the title on the window and
# copyright is any additional copyright info to print.
#
# As well as the starting attributes in namespace, the session will also
# have access to the list __history__, which is the command history.
import sys, string, traceback
import pango, gtk, gtk.keysyms
stdout = sys.stdout
if not hasattr(sys, 'ps1'): sys.ps1 = '>>> '
if not hasattr(sys, 'ps2'): sys.ps2 = '... '
# some functions to help recognise breaks between commands
def remQuotStr(s):
'''Returns s with any quoted strings removed (leaving quote marks)'''
ret = ''
in_quote = 0
quote = ''
prev = None
for ch in s:
if in_quote and (ch != quote or prev == '\\'):
if ch == '\\' and prev == '\\':
prev = None
else:
prev = ch
continue
prev = ch
if ch in '\'"':
if in_quote:
in_quote = 0
else:
in_quote = 1
quote = ch
ret = ret + ch
return ret
def bracketsBalanced(s):
'''Returns true iff the brackets in s are balanced'''
stack = []
brackets = {'(':')', '[':']', '{':'}'}
for ch in s:
if ch in '([{':
stack.append(ch)
elif ch in '}])':
if len(stack) != 0 and brackets[stack[-1]] == ch:
del stack[-1]
else:
return 0
return len(stack) == 0
class gtkoutfile:
'''A fake output file object. It sends output to a TK test widget,
and if asked for a file number, returns one set on instance creation'''
def __init__(self, buffer, fileno, tag):
self.__fileno = fileno
self.__buffer = buffer
self.__tag = tag
def close(self): pass
flush = close
def fileno(self): return self.__fileno
def isatty(self): return 0
def read(self, a): return ''
def readline(self): return ''
def readlines(self): return []
def write(self, string):
#stdout.write(str(self.__w.get_point()) + '\n')
iter = self.__buffer.get_end_iter()
self.__buffer.insert_with_tags_by_name(iter, string, self.__tag)
def writelines(self, lines):
iter = self.__buffer.get_end_iter()
for line in lines:
self.__buffer.insert_with_tags_by_name(iter, lines, self.__tag)
def seek(self, a): raise IOError, (29, 'Illegal seek')
def tell(self): raise IOError, (29, 'Illegal seek')
truncate = tell
class Console(gtk.VBox):
def __init__(self, namespace={}, quit_cb=None):
gtk.VBox.__init__(self, spacing=2)
self.set_border_width(2)
self.quit_cb = quit_cb
swin = gtk.ScrolledWindow()
swin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
self.pack_start(swin)
swin.show()
self.vadj = swin.get_vadjustment()
self.textview = gtk.TextView()
self.textview.set_editable(gtk.FALSE)
self.textview.set_cursor_visible(gtk.FALSE)
self.textview.set_wrap_mode(gtk.WRAP_WORD)
self.buffer = self.textview.get_buffer()
swin.add(self.textview)
self.textview.show()
# tags to use when inserting text ...
tag = self.buffer.create_tag('normal')
tag = self.buffer.create_tag('command')
tag.set_property('weight', pango.WEIGHT_BOLD)
tag = self.buffer.create_tag('error')
tag.set_property('style', pango.STYLE_ITALIC)
self.inputbox = gtk.HBox(spacing=2)
self.pack_end(self.inputbox, expand=gtk.FALSE)
self.inputbox.show()
self.prompt = gtk.Label(sys.ps1)
self.prompt.set_padding(2, 0)
self.inputbox.pack_start(self.prompt, expand=gtk.FALSE)
self.prompt.show()
self.closer = gtk.Button("Close")
self.closer.connect("clicked", self.quit)
self.inputbox.pack_end(self.closer, expand=gtk.FALSE)
self.closer.show()
self.line = gtk.Entry()
self.line.connect("key_press_event", self.key_function)
self.inputbox.pack_start(self.line, padding=2)
self.line.show()
self.namespace = namespace
self.cmd = ''
self.cmd2 = ''
# set up hooks for standard output.
self.stdout = gtkoutfile(self.buffer, sys.stdout.fileno(), 'normal')
self.stderr = gtkoutfile(self.buffer, sys.stderr.fileno(), 'error')
# set up command history
self.history = ['']
self.histpos = 0
self.namespace['__history__'] = self.history
def init(self):
message = 'Python %s\n\n' % (sys.version,)
iter = self.buffer.get_end_iter()
self.buffer.insert_with_tags_by_name(iter, message, 'command')
self.line.grab_focus()
def quit(self, *args):
self.hide()
self.destroy()
if self.quit_cb: self.quit_cb()
def key_function(self, entry, event):
if event.keyval == gtk.keysyms.Return:
self.line.emit_stop_by_name("key_press_event")
self.eval()
if event.keyval == gtk.keysyms.Tab:
self.line.emit_stop_by_name("key_press_event")
self.line.append_text('\t')
gtk.idle_add(self.focus_text)
elif event.keyval in (gtk.keysyms.KP_Up, gtk.keysyms.Up):
self.line.emit_stop_by_name("key_press_event")
self.historyUp()
gtk.idle_add(self.focus_text)
elif event.keyval in (gtk.keysyms.KP_Down, gtk.keysyms.Down):
self.line.emit_stop_by_name("key_press_event")
self.historyDown()
gtk.idle_add(self.focus_text)
elif event.keyval in (gtk.keysyms.D, gtk.keysyms.d) and \
event.state & gtk.gdk.CONTROL_MASK:
self.line.emit_stop_by_name("key_press_event")
self.ctrld()
def focus_text(self):
self.line.grab_focus()
return gtk.FALSE # don't requeue this handler
def scroll_bottom(self):
self.vadj.set_value(self.vadj.upper - self.vadj.page_size)
return gtk.FALSE
def ctrld(self):
#self.quit()
pass
def historyUp(self):
if self.histpos > 0:
l = self.line.get_text()
if len(l) > 0 and l[0] == '\n': l = l[1:]
if len(l) > 0 and l[-1] == '\n': l = l[:-1]
self.history[self.histpos] = l
self.histpos = self.histpos - 1
self.line.set_text(self.history[self.histpos])
def historyDown(self):
if self.histpos < len(self.history) - 1:
l = self.line.get_text()
if len(l) > 0 and l[0] == '\n': l = l[1:]
if len(l) > 0 and l[-1] == '\n': l = l[:-1]
self.history[self.histpos] = l
self.histpos = self.histpos + 1
self.line.set_text(self.history[self.histpos])
self.line.set_position(-1)
def eval(self):
l = self.line.get_text() + '\n'
if len(l) > 1 and l[0] == '\n': l = l[1:]
self.histpos = len(self.history) - 1
if len(l) > 0 and l[-1] == '\n':
self.history[self.histpos] = l[:-1]
else:
self.history[self.histpos] = l
self.line.set_text('')
iter = self.buffer.get_end_iter()
self.buffer.insert_with_tags_by_name(iter, self.prompt.get_text() + l,
'command')
if l == '\n':
self.run(self.cmd)
self.cmd = ''
self.cmd2 = ''
return
self.histpos = self.histpos + 1
self.history.append('')
self.cmd = self.cmd + l
self.cmd2 = self.cmd2 + remQuotStr(l)
l = string.rstrip(l)
if not bracketsBalanced(self.cmd2) or l[-1] == ':' or \
l[-1] == '\\' or l[0] in ' \11':
self.prompt.set_text(sys.ps2)
self.prompt.queue_draw()
return
self.run(self.cmd)
self.cmd = ''
self.cmd2 = ''
def run(self, cmd):
sys.stdout, self.stdout = self.stdout, sys.stdout
sys.stderr, self.stderr = self.stderr, sys.stderr
try:
try:
r = eval(cmd, self.namespace, self.namespace)
self.namespace['_'] = r
if r is not None:
print `r`
except SyntaxError:
exec cmd in self.namespace
except:
if hasattr(sys, 'last_type') and \
sys.last_type == SystemExit:
self.quit()
else:
traceback.print_exc()
self.prompt.set_text(sys.ps1)
self.prompt.queue_draw()
gtk.idle_add(self.scroll_bottom)
sys.stdout, self.stdout = self.stdout, sys.stdout
sys.stderr, self.stderr = self.stderr, sys.stderr
def gtk_console(ns, title='Python', menu=None):
win = gtk.Window()
win.set_default_size(475, 300)
win.connect("destroy", gtk.mainquit)
win.connect("delete_event", gtk.mainquit)
win.set_title(title)
cons = Console(namespace=ns, quit_cb=gtk.mainquit)
if menu:
box = gtk.VBox()
win.add(box)
box.show()
box.pack_start(menu, expand=gtk.FALSE)
menu.show()
box.pack_start(cons)
else:
win.add(cons)
cons.show()
win.show()
cons.init()
gtk.main()
if __name__ == '__main__':
if len(sys.argv) < 2 or sys.argv[1] != '-gimp':
gtk_console({'__builtins__': __builtins__, '__name__': '__main__',
'__doc__': None})
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