"""Extension to execute code outside the Python shell window. This adds the following commands: - Check module does a full syntax check of the current module.  It also runs the tabnanny to catch any inconsistent tabs. - Run module executes the module's code in the __main__ namespace.  The window  must have been saved previously. The module is added to sys.modules, and is  also added to the __main__ namespace. XXX GvR Redesign this interface (yet again) as follows: - Present a dialog box for ``Run Module'' - Allow specify command line arguments in the dialog box """ import osimport reimport stringimport tabnannyimport tokenizeimport tkMessageBoximport PyShell from configHandler import idleConf IDENTCHARS = string.ascii_letters + string.digits + "_" indent_message = """Error: Inconsistent indentation detected! 1) Your indentation is outright incorrect (easy to fix), OR 2) Your indentation mixes tabs and spaces. To fix case 2, change all tabs to spaces by using Edit->Select All followed \by Format->Untabify Region and specify the number of columns used by each tab.""" class ScriptBinding:     menudefs = [        ('run', [None,                 ('Check Module', '<<check-module>>'),                 ('Run Module', '<<run-module>>'), ]), ]     def __init__(self, editwin):        self.editwin = editwin        # Provide instance variables referenced by Debugger        # XXX This should be done differently        self.flist = self.editwin.flist        self.root = self.editwin.root     def check_module_event(self, event):        filename = self.getfilename()        if not filename:            return        if not self.tabnanny(filename):            return        self.checksyntax(filename)     def tabnanny(self, filename):        f = open(filename, 'r')        try:            tabnanny.process_tokens(tokenize.generate_tokens(f.readline))        except tokenize.TokenError, msg:            msgtxt, (lineno, start) = msg            self.editwin.gotoline(lineno)            self.errorbox("Tabnanny Tokenizing Error",                          "Token Error: %s" % msgtxt)            return False        except tabnanny.NannyNag, nag:            # The error messages from tabnanny are too confusing...            self.editwin.gotoline(nag.get_lineno())            self.errorbox("Tab/space error", indent_message)            return False        except IndentationError:            # From tokenize(), let compile() in checksyntax find it again.            pass        return True     def checksyntax(self, filename):        self.shell = shell = self.flist.open_shell()        saved_stream = shell.get_warning_stream()        shell.set_warning_stream(shell.stderr)        f = open(filename, 'r')        source = f.read()        f.close()        if '\r' in source:            source = re.sub(r"\r\n", "\n", source)            source = re.sub(r"\r", "\n", source)        if source and source[-1] != '\n':            source = source + '\n'        text = self.editwin.text        text.tag_remove("ERROR", "1.0", "end")        try:            try:                # If successful, return the compiled code                return compile(source, filename, "exec")            except (SyntaxError, OverflowError), err:                try:                    msg, (errorfilename, lineno, offset, line) = err                    if not errorfilename:                        err.args = msg, (filename, lineno, offset, line)                        err.filename = filename                    self.colorize_syntax_error(msg, lineno, offset)                except:                    msg = "*** " + str(err)                self.errorbox("Syntax error",                              "There's an error in your program:\n" + msg)                return False        finally:            shell.set_warning_stream(saved_stream)     def colorize_syntax_error(self, msg, lineno, offset):        text = self.editwin.text        pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1)        text.tag_add("ERROR", pos)        char = text.get(pos)        if char and char in IDENTCHARS:            text.tag_add("ERROR", pos + " wordstart", pos)        if '\n' == text.get(pos):   # error at line end            text.mark_set("insert", pos)        else:            text.mark_set("insert", pos + "+1c")        text.see(pos)     def run_module_event(self, event):        """Run the module after setting up the environment.         First check the syntax.  If OK, make sure the shell is active and        then transfer the arguments, set the run environment's working        directory to the directory of the module being executed and also        add that directory to its sys.path if not already included.         """        filename = self.getfilename()        if not filename:            return        if not self.tabnanny(filename):            return        code = self.checksyntax(filename)        if not code:            return        shell = self.shell        interp = shell.interp        if PyShell.use_subprocess:            shell.restart_shell()        dirname = os.path.dirname(filename)        # XXX Too often this discards arguments the user just set...        interp.runcommand("""if 1:            _filename = %r            import sys as _sys            from os.path import basename as _basename            if (not _sys.argv or                _basename(_sys.argv[0]) != _basename(_filename)):                _sys.argv = [_filename]            import os as _os            _os.chdir(%r)            del _filename, _sys, _basename, _os            \n""" % (filename, dirname))        interp.prepend_syspath(filename)        # XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still        #         go to __stderr__.  With subprocess, they go to the shell.        #         Need to change streams in PyShell.ModifiedInterpreter.        interp.runcode(code)     def getfilename(self):        """Get source filename.  If not saved, offer to save (or create) file         The debugger requires a source file.  Make sure there is one, and that        the current version of the source buffer has been saved.  If the user        declines to save or cancels the Save As dialog, return None.         If the user has configured IDLE for Autosave, the file will be        silently saved if it already exists and is dirty.         """        filename = self.editwin.io.filename        if not self.editwin.get_saved():            autosave = idleConf.GetOption('main', 'General',                                          'autosave', type='bool')            if autosave and filename:                self.editwin.io.save(None)            else:                reply = self.ask_save_dialog()                self.editwin.text.focus_set()                if reply == "ok":                    self.editwin.io.save(None)                    filename = self.editwin.io.filename                else:                    filename = None        return filename     def ask_save_dialog(self):        msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?"        mb = tkMessageBox.Message(title="Save Before Run or Check",                                  message=msg,                                  icon=tkMessageBox.QUESTION,                                  type=tkMessageBox.OKCANCEL,                                  default=tkMessageBox.OK,                                  master=self.editwin.text)        return mb.show()     def errorbox(self, title, message):        # XXX This should really be a function of EditorWindow...        tkMessageBox.showerror(title, message, master=self.editwin.text)        self.editwin.text.focus_set()