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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})
-