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PyShell.py
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#! /usr/bin/env python import os import os.path import sys import string import getopt import re import socket import time import threading import traceback import types import io import linecache from code import InteractiveInterpreter from platform import python_version try: from Tkinter import * except ImportError: print>>sys.__stderr__, "** IDLE can't import Tkinter. " \ "Your Python may not be configured for Tk. **" sys.exit(1) import tkMessageBox from idlelib.EditorWindow import EditorWindow, fixwordbreaks from idlelib.FileList import FileList from idlelib.ColorDelegator import ColorDelegator from idlelib.UndoDelegator import UndoDelegator from idlelib.OutputWindow import OutputWindow from idlelib.configHandler import idleConf from idlelib import idlever from idlelib import rpc from idlelib import Debugger from idlelib import RemoteDebugger from idlelib import macosxSupport IDENTCHARS = string.ascii_letters + string.digits + "_" HOST = '127.0.0.1' # python execution server on localhost loopback PORT = 0 # someday pass in host, port for remote debug capability try: from signal import SIGTERM except ImportError: SIGTERM = 15 # Override warnings module to write to warning_stream. Initialize to send IDLE # internal warnings to the console. ScriptBinding.check_syntax() will # temporarily redirect the stream to the shell window to display warnings when # checking user's code. global warning_stream warning_stream = sys.__stderr__ try: import warnings except ImportError: pass else: def idle_showwarning(message, category, filename, lineno, file=None, line=None): if file is None: file = warning_stream try: file.write(warnings.formatwarning(message, category, filename, lineno, line=line)) except IOError: pass ## file (probably __stderr__) is invalid, warning dropped. warnings.showwarning = idle_showwarning def idle_formatwarning(message, category, filename, lineno, line=None): """Format warnings the IDLE way""" s = "\nWarning (from warnings module):\n" s += ' File \"%s\", line %s\n' % (filename, lineno) if line is None: line = linecache.getline(filename, lineno) line = line.strip() if line: s += " %s\n" % line s += "%s: %s\n>>> " % (category.__name__, message) return s warnings.formatwarning = idle_formatwarning def extended_linecache_checkcache(filename=None, orig_checkcache=linecache.checkcache): """Extend linecache.checkcache to preserve the <pyshell#...> entries Rather than repeating the linecache code, patch it to save the <pyshell#...> entries, call the original linecache.checkcache() (skipping them), and then restore the saved entries. orig_checkcache is bound at definition time to the original method, allowing it to be patched. """ cache = linecache.cache save = {} for key in list(cache): if key[:1] + key[-1:] == '<>': save[key] = cache.pop(key) orig_checkcache(filename) cache.update(save) # Patch linecache.checkcache(): linecache.checkcache = extended_linecache_checkcache class PyShellEditorWindow(EditorWindow): "Regular text edit window in IDLE, supports breakpoints" def __init__(self, *args): self.breakpoints = [] EditorWindow.__init__(self, *args) self.text.bind("<<set-breakpoint-here>>", self.set_breakpoint_here) self.text.bind("<<clear-breakpoint-here>>", self.clear_breakpoint_here) self.text.bind("<<open-python-shell>>", self.flist.open_shell) self.breakpointPath = os.path.join(idleConf.GetUserCfgDir(), 'breakpoints.lst') # whenever a file is changed, restore breakpoints def filename_changed_hook(old_hook=self.io.filename_change_hook, self=self): self.restore_file_breaks() old_hook() self.io.set_filename_change_hook(filename_changed_hook) if self.io.filename: self.restore_file_breaks() rmenu_specs = [ ("Cut", "<<cut>>", "rmenu_check_cut"), ("Copy", "<<copy>>", "rmenu_check_copy"), ("Paste", "<<paste>>", "rmenu_check_paste"), ("Set Breakpoint", "<<set-breakpoint-here>>", None), ("Clear Breakpoint", "<<clear-breakpoint-here>>", None) ] def set_breakpoint(self, lineno): text = self.text filename = self.io.filename text.tag_add("BREAK", "%d.0" % lineno, "%d.0" % (lineno+1)) try: i = self.breakpoints.index(lineno) except ValueError: # only add if missing, i.e. do once self.breakpoints.append(lineno) try: # update the subprocess debugger debug = self.flist.pyshell.interp.debugger debug.set_breakpoint_here(filename, lineno) except: # but debugger may not be active right now.... pass def set_breakpoint_here(self, event=None): text = self.text filename = self.io.filename if not filename: text.bell() return lineno = int(float(text.index("insert"))) self.set_breakpoint(lineno) def clear_breakpoint_here(self, event=None): text = self.text filename = self.io.filename if not filename: text.bell() return lineno = int(float(text.index("insert"))) try: self.breakpoints.remove(lineno) except: pass text.tag_remove("BREAK", "insert linestart",\ "insert lineend +1char") try: debug = self.flist.pyshell.interp.debugger debug.clear_breakpoint_here(filename, lineno) except: pass def clear_file_breaks(self): if self.breakpoints: text = self.text filename = self.io.filename if not filename: text.bell() return self.breakpoints = [] text.tag_remove("BREAK", "1.0", END) try: debug = self.flist.pyshell.interp.debugger debug.clear_file_breaks(filename) except: pass def store_file_breaks(self): "Save breakpoints when file is saved" # XXX 13 Dec 2002 KBK Currently the file must be saved before it can # be run. The breaks are saved at that time. If we introduce # a temporary file save feature the save breaks functionality # needs to be re-verified, since the breaks at the time the # temp file is created may differ from the breaks at the last # permanent save of the file. Currently, a break introduced # after a save will be effective, but not persistent. # This is necessary to keep the saved breaks synched with the # saved file. # # Breakpoints are set as tagged ranges in the text. Certain # kinds of edits cause these ranges to be deleted: Inserting # or deleting a line just before a breakpoint, and certain # deletions prior to a breakpoint. These issues need to be # investigated and understood. It's not clear if they are # Tk issues or IDLE issues, or whether they can actually # be fixed. Since a modified file has to be saved before it is # run, and since self.breakpoints (from which the subprocess # debugger is loaded) is updated during the save, the visible # breaks stay synched with the subprocess even if one of these # unexpected breakpoint deletions occurs. breaks = self.breakpoints filename = self.io.filename try: with open(self.breakpointPath,"r") as old_file: lines = old_file.readlines() except IOError: lines = [] try: with open(self.breakpointPath,"w") as new_file: for line in lines: if not line.startswith(filename + '='): new_file.write(line) self.update_breakpoints() breaks = self.breakpoints if breaks: new_file.write(filename + '=' + str(breaks) + '\n') except IOError as err: if not getattr(self.root, "breakpoint_error_displayed", False): self.root.breakpoint_error_displayed = True tkMessageBox.showerror(title='IDLE Error', message='Unable to update breakpoint list:\n%s' % str(err), parent=self.text) def restore_file_breaks(self): self.text.update() # this enables setting "BREAK" tags to be visible if self.io is None: # can happen if IDLE closes due to the .update() call return filename = self.io.filename if filename is None: return if os.path.isfile(self.breakpointPath): lines = open(self.breakpointPath,"r").readlines() for line in lines: if line.startswith(filename + '='): breakpoint_linenumbers = eval(line[len(filename)+1:]) for breakpoint_linenumber in breakpoint_linenumbers: self.set_breakpoint(breakpoint_linenumber) def update_breakpoints(self): "Retrieves all the breakpoints in the current window" text = self.text ranges = text.tag_ranges("BREAK") linenumber_list = self.ranges_to_linenumbers(ranges) self.breakpoints = linenumber_list def ranges_to_linenumbers(self, ranges): lines = [] for index in range(0, len(ranges), 2): lineno = int(float(ranges[index].string)) end = int(float(ranges[index+1].string)) while lineno < end: lines.append(lineno) lineno += 1 return lines # XXX 13 Dec 2002 KBK Not used currently # def saved_change_hook(self): # "Extend base method - clear breaks if module is modified" # if not self.get_saved(): # self.clear_file_breaks() # EditorWindow.saved_change_hook(self) def _close(self): "Extend base method - clear breaks when module is closed" self.clear_file_breaks() EditorWindow._close(self) class PyShellFileList(FileList): "Extend base class: IDLE supports a shell and breakpoints" # override FileList's class variable, instances return PyShellEditorWindow # instead of EditorWindow when new edit windows are created. EditorWindow = PyShellEditorWindow pyshell = None def open_shell(self, event=None): if self.pyshell: self.pyshell.top.wakeup() else: self.pyshell = PyShell(self) if self.pyshell: if not self.pyshell.begin(): return None return self.pyshell class ModifiedColorDelegator(ColorDelegator): "Extend base class: colorizer for the shell window itself" def __init__(self): ColorDelegator.__init__(self) self.LoadTagDefs() def recolorize_main(self): self.tag_remove("TODO", "1.0", "iomark") self.tag_add("SYNC", "1.0", "iomark") ColorDelegator.recolorize_main(self) def LoadTagDefs(self): ColorDelegator.LoadTagDefs(self) theme = idleConf.GetOption('main','Theme','name') self.tagdefs.update({ "stdin": {'background':None,'foreground':None}, "stdout": idleConf.GetHighlight(theme, "stdout"), "stderr": idleConf.GetHighlight(theme, "stderr"), "console": idleConf.GetHighlight(theme, "console"), }) def removecolors(self): # Don't remove shell color tags before "iomark" for tag in self.tagdefs: self.tag_remove(tag, "iomark", "end") class ModifiedUndoDelegator(UndoDelegator): "Extend base class: forbid insert/delete before the I/O mark" def insert(self, index, chars, tags=None): try: if self.delegate.compare(index, "<", "iomark"): self.delegate.bell() return except TclError: pass UndoDelegator.insert(self, index, chars, tags) def delete(self, index1, index2=None): try: if self.delegate.compare(index1, "<", "iomark"): self.delegate.bell() return except TclError: pass UndoDelegator.delete(self, index1, index2) class MyRPCClient(rpc.RPCClient): def handle_EOF(self): "Override the base class - just re-raise EOFError" raise EOFError class ModifiedInterpreter(InteractiveInterpreter): def __init__(self, tkconsole): self.tkconsole = tkconsole locals = sys.modules['__main__'].__dict__ InteractiveInterpreter.__init__(self, locals=locals) self.save_warnings_filters = None self.restarting = False self.subprocess_arglist = None self.port = PORT self.original_compiler_flags = self.compile.compiler.flags rpcclt = None rpcpid = None def spawn_subprocess(self): if self.subprocess_arglist is None: self.subprocess_arglist = self.build_subprocess_arglist() args = self.subprocess_arglist self.rpcpid = os.spawnv(os.P_NOWAIT, sys.executable, args) def build_subprocess_arglist(self): assert (self.port!=0), ( "Socket should have been assigned a port number.") w = ['-W' + s for s in sys.warnoptions] if 1/2 > 0: # account for new division w.append('-Qnew') # Maybe IDLE is installed and is being accessed via sys.path, # or maybe it's not installed and the idle.py script is being # run from the IDLE source directory. del_exitf = idleConf.GetOption('main', 'General', 'delete-exitfunc', default=False, type='bool') if __name__ == 'idlelib.PyShell': command = "__import__('idlelib.run').run.main(%r)" % (del_exitf,) else: command = "__import__('run').main(%r)" % (del_exitf,) if sys.platform[:3] == 'win' and ' ' in sys.executable: # handle embedded space in path by quoting the argument decorated_exec = '"%s"' % sys.executable else: decorated_exec = sys.executable return [decorated_exec] + w + ["-c", command, str(self.port)] def start_subprocess(self): addr = (HOST, self.port) # GUI makes several attempts to acquire socket, listens for connection for i in range(3): time.sleep(i) try: self.rpcclt = MyRPCClient(addr) break except socket.error, err: pass else: self.display_port_binding_error() return None # if PORT was 0, system will assign an 'ephemeral' port. Find it out: self.port = self.rpcclt.listening_sock.getsockname()[1] # if PORT was not 0, probably working with a remote execution server if PORT != 0: # To allow reconnection within the 2MSL wait (cf. Stevens TCP # V1, 18.6), set SO_REUSEADDR. Note that this can be problematic # on Windows since the implementation allows two active sockets on # the same address! self.rpcclt.listening_sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) self.spawn_subprocess() #time.sleep(20) # test to simulate GUI not accepting connection # Accept the connection from the Python execution server self.rpcclt.listening_sock.settimeout(10) try: self.rpcclt.accept() except socket.timeout, err: self.display_no_subprocess_error() return None self.rpcclt.register("console", self.tkconsole) self.rpcclt.register("stdin", self.tkconsole.stdin) self.rpcclt.register("stdout", self.tkconsole.stdout) self.rpcclt.register("stderr", self.tkconsole.stderr) self.rpcclt.register("flist", self.tkconsole.flist) self.rpcclt.register("linecache", linecache) self.rpcclt.register("interp", self) self.transfer_path(with_cwd=True) self.poll_subprocess() return self.rpcclt def restart_subprocess(self, with_cwd=False): if self.restarting: return self.rpcclt self.restarting = True # close only the subprocess debugger debug = self.getdebugger() if debug: try: # Only close subprocess debugger, don't unregister gui_adap! RemoteDebugger.close_subprocess_debugger(self.rpcclt) except: pass # Kill subprocess, spawn a new one, accept connection. self.rpcclt.close() self.unix_terminate() console = self.tkconsole was_executing = console.executing console.executing = False self.spawn_subprocess() try: self.rpcclt.accept() except socket.timeout, err: self.display_no_subprocess_error() return None self.transfer_path(with_cwd=with_cwd) console.stop_readline() # annotate restart in shell window and mark it console.text.delete("iomark", "end-1c") if was_executing: console.write('\n') console.showprompt() halfbar = ((int(console.width) - 16) // 2) * '=' console.write(halfbar + ' RESTART ' + halfbar) console.text.mark_set("restart", "end-1c") console.text.mark_gravity("restart", "left") console.showprompt() # restart subprocess debugger if debug: # Restarted debugger connects to current instance of debug GUI gui = RemoteDebugger.restart_subprocess_debugger(self.rpcclt) # reload remote debugger breakpoints for all PyShellEditWindows debug.load_breakpoints() self.compile.compiler.flags = self.original_compiler_flags self.restarting = False return self.rpcclt def __request_interrupt(self): self.rpcclt.remotecall("exec", "interrupt_the_server", (), {}) def interrupt_subprocess(self): threading.Thread(target=self.__request_interrupt).start() def kill_subprocess(self): try: self.rpcclt.close() except AttributeError: # no socket pass self.unix_terminate() self.tkconsole.executing = False self.rpcclt = None def unix_terminate(self): "UNIX: make sure subprocess is terminated and collect status" if hasattr(os, 'kill'): try: os.kill(self.rpcpid, SIGTERM) except OSError: # process already terminated: return else: try: os.waitpid(self.rpcpid, 0) except OSError: return def transfer_path(self, with_cwd=False): if with_cwd: # Issue 13506 path = [''] # include Current Working Directory path.extend(sys.path) else: path = sys.path self.runcommand("""if 1: import sys as _sys _sys.path = %r del _sys \n""" % (path,)) active_seq = None def poll_subprocess(self): clt = self.rpcclt if clt is None: return try: response = clt.pollresponse(self.active_seq, wait=0.05) except (EOFError, IOError, KeyboardInterrupt): # lost connection or subprocess terminated itself, restart # [the KBI is from rpc.SocketIO.handle_EOF()] if self.tkconsole.closing: return response = None self.restart_subprocess() if response: self.tkconsole.resetoutput() self.active_seq = None how, what = response console = self.tkconsole.console if how == "OK": if what is not None: print >>console, repr(what) elif how == "EXCEPTION": if self.tkconsole.getvar("<<toggle-jit-stack-viewer>>"): self.remote_stack_viewer() elif how == "ERROR": errmsg = "PyShell.ModifiedInterpreter: Subprocess ERROR:\n" print >>sys.__stderr__, errmsg, what print >>console, errmsg, what # we received a response to the currently active seq number: try: self.tkconsole.endexecuting() except AttributeError: # shell may have closed pass # Reschedule myself if not self.tkconsole.closing: self.tkconsole.text.after(self.tkconsole.pollinterval, self.poll_subprocess) debugger = None def setdebugger(self, debugger): self.debugger = debugger def getdebugger(self): return self.debugger def open_remote_stack_viewer(self): """Initiate the remote stack viewer from a separate thread. This method is called from the subprocess, and by returning from this method we allow the subprocess to unblock. After a bit the shell requests the subprocess to open the remote stack viewer which returns a static object looking at the last exception. It is queried through the RPC mechanism. """ self.tkconsole.text.after(300, self.remote_stack_viewer) return def remote_stack_viewer(self): from idlelib import RemoteObjectBrowser oid = self.rpcclt.remotequeue("exec", "stackviewer", ("flist",), {}) if oid is None: self.tkconsole.root.bell() return item = RemoteObjectBrowser.StubObjectTreeItem(self.rpcclt, oid) from idlelib.TreeWidget import ScrolledCanvas, TreeNode top = Toplevel(self.tkconsole.root) theme = idleConf.GetOption('main','Theme','name') background = idleConf.GetHighlight(theme, 'normal')['background'] sc = ScrolledCanvas(top, bg=background, highlightthickness=0) sc.frame.pack(expand=1, fill="both") node = TreeNode(sc.canvas, None, item) node.expand() # XXX Should GC the remote tree when closing the window gid = 0 def execsource(self, source): "Like runsource() but assumes complete exec source" filename = self.stuffsource(source) self.execfile(filename, source) def execfile(self, filename, source=None): "Execute an existing file" if source is None: source = open(filename, "r").read() try: code = compile(source, filename, "exec") except (OverflowError, SyntaxError): self.tkconsole.resetoutput() tkerr = self.tkconsole.stderr print>>tkerr, '*** Error in script or command!\n' print>>tkerr, 'Traceback (most recent call last):' InteractiveInterpreter.showsyntaxerror(self, filename) self.tkconsole.showprompt() else: self.runcode(code) def runsource(self, source): "Extend base class method: Stuff the source in the line cache first" filename = self.stuffsource(source) self.more = 0 self.save_warnings_filters = warnings.filters[:] warnings.filterwarnings(action="error", category=SyntaxWarning) if isinstance(source, types.UnicodeType): from idlelib import IOBinding try: source = source.encode(IOBinding.encoding) except UnicodeError: self.tkconsole.resetoutput() self.write("Unsupported characters in input\n") return try: # InteractiveInterpreter.runsource() calls its runcode() method, # which is overridden (see below) return InteractiveInterpreter.runsource(self, source, filename) finally: if self.save_warnings_filters is not None: warnings.filters[:] = self.save_warnings_filters self.save_warnings_filters = None def stuffsource(self, source): "Stuff source in the filename cache" filename = "<pyshell#%d>" % self.gid self.gid = self.gid + 1 lines = source.split("\n") linecache.cache[filename] = len(source)+1, 0, lines, filename return filename def prepend_syspath(self, filename): "Prepend sys.path with file's directory if not already included" self.runcommand("""if 1: _filename = %r import sys as _sys from os.path import dirname as _dirname _dir = _dirname(_filename) if not _dir in _sys.path: _sys.path.insert(0, _dir) del _filename, _sys, _dirname, _dir \n""" % (filename,)) def showsyntaxerror(self, filename=None): """Extend base class method: Add Colorizing Color the offending position instead of printing it and pointing at it with a caret. """ text = self.tkconsole.text stuff = self.unpackerror() if stuff: msg, lineno, offset, line = stuff if lineno == 1: pos = "iomark + %d chars" % (offset-1) else: pos = "iomark linestart + %d lines + %d chars" % \ (lineno-1, offset-1) text.tag_add("ERROR", pos) text.see(pos) char = text.get(pos) if char and char in IDENTCHARS: text.tag_add("ERROR", pos + " wordstart", pos) self.tkconsole.resetoutput() self.write("SyntaxError: %s\n" % str(msg)) else: self.tkconsole.resetoutput() InteractiveInterpreter.showsyntaxerror(self, filename) self.tkconsole.showprompt() def unpackerror(self): type, value, tb = sys.exc_info() ok = type is SyntaxError if ok: try: msg, (dummy_filename, lineno, offset, line) = value if not offset: offset = 0 except: ok = 0 if ok: return msg, lineno, offset, line else: return None def showtraceback(self): "Extend base class method to reset output properly" self.tkconsole.resetoutput() self.checklinecache() InteractiveInterpreter.showtraceback(self) if self.tkconsole.getvar("<<toggle-jit-stack-viewer>>"): self.tkconsole.open_stack_viewer() def checklinecache(self): c = linecache.cache for key in c.keys(): if key[:1] + key[-1:] != "<>": del c[key] def runcommand(self, code): "Run the code without invoking the debugger" # The code better not raise an exception! if self.tkconsole.executing: self.display_executing_dialog() return 0 if self.rpcclt: self.rpcclt.remotequeue("exec", "runcode", (code,), {}) else: exec code in self.locals return 1 def runcode(self, code): "Override base class method" if self.tkconsole.executing: self.interp.restart_subprocess() self.checklinecache() if self.save_warnings_filters is not None: warnings.filters[:] = self.save_warnings_filters self.save_warnings_filters = None debugger = self.debugger try: self.tkconsole.beginexecuting() if not debugger and self.rpcclt is not None: self.active_seq = self.rpcclt.asyncqueue("exec", "runcode", (code,), {}) elif debugger: debugger.run(code, self.locals) else: exec code in self.locals except SystemExit: if not self.tkconsole.closing: if tkMessageBox.askyesno( "Exit?", "Do you want to exit altogether?", default="yes", master=self.tkconsole.text): raise else: self.showtraceback() else: raise except: if use_subprocess: print >>self.tkconsole.stderr, \ "IDLE internal error in runcode()" self.showtraceback() self.tkconsole.endexecuting() else: if self.tkconsole.canceled: self.tkconsole.canceled = False print >>self.tkconsole.stderr, "KeyboardInterrupt" else: self.showtraceback() finally: if not use_subprocess: try: self.tkconsole.endexecuting() except AttributeError: # shell may have closed pass def write(self, s): "Override base class method" self.tkconsole.stderr.write(s) def display_port_binding_error(self): tkMessageBox.showerror( "Port Binding Error", "IDLE can't bind to a TCP/IP port, which is necessary to " "communicate with its Python execution server. This might be " "because no networking is installed on this computer. " "Run IDLE with the -n command line switch to start without a " "subprocess and refer to Help/IDLE Help 'Running without a " "subprocess' for further details.", master=self.tkconsole.text) def display_no_subprocess_error(self): tkMessageBox.showerror( "Subprocess Startup Error", "IDLE's subprocess didn't make connection. Either IDLE can't " "start a subprocess or personal firewall software is blocking " "the connection.", master=self.tkconsole.text) def display_executing_dialog(self): tkMessageBox.showerror( "Already executing", "The Python Shell window is already executing a command; " "please wait until it is finished.", master=self.tkconsole.text) class PyShell(OutputWindow): shell_title = "Python " + python_version() + " Shell" # Override classes ColorDelegator = ModifiedColorDelegator UndoDelegator = ModifiedUndoDelegator # Override menus menu_specs = [ ("file", "_File"), ("edit", "_Edit"), ("debug", "_Debug"), ("options", "_Options"), ("windows", "_Windows"), ("help", "_Help"), ] if macosxSupport.runningAsOSXApp(): del menu_specs[-3] menu_specs[-2] = ("windows", "_Window") # New classes from idlelib.IdleHistory import History def __init__(self, flist=None): if use_subprocess: ms = self.menu_specs if ms[2][0] != "shell": ms.insert(2, ("shell", "She_ll")) self.interp = ModifiedInterpreter(self) if flist is None: root = Tk() fixwordbreaks(root) root.withdraw() flist = PyShellFileList(root) # OutputWindow.__init__(self, flist, None, None) # ## self.config(usetabs=1, indentwidth=8, context_use_ps1=1) self.usetabs = True # indentwidth must be 8 when using tabs. See note in EditorWindow: self.indentwidth = 8 self.context_use_ps1 = True # text = self.text text.configure(wrap="char") text.bind("<<newline-and-indent>>", self.enter_callback) text.bind("<<plain-newline-and-indent>>", self.linefeed_callback) text.bind("<<interrupt-execution>>", self.cancel_callback) text.bind("<<end-of-file>>", self.eof_callback) text.bind("<<open-stack-viewer>>", self.open_stack_viewer) text.bind("<<toggle-debugger>>", self.toggle_debugger) text.bind("<<toggle-jit-stack-viewer>>", self.toggle_jit_stack_viewer) if use_subprocess: text.bind("<<view-restart>>", self.view_restart_mark) text.bind("<<restart-shell>>", self.restart_shell) # self.save_stdout = sys.stdout self.save_stderr = sys.stderr self.save_stdin = sys.stdin from idlelib import IOBinding self.stdin = PseudoInputFile(self, "stdin", IOBinding.encoding) self.stdout = PseudoOutputFile(self, "stdout", IOBinding.encoding) self.stderr = PseudoOutputFile(self, "stderr", IOBinding.encoding) self.console = PseudoOutputFile(self, "console", IOBinding.encoding) if not use_subprocess: sys.stdout = self.stdout sys.stderr = self.stderr sys.stdin = self.stdin # self.history = self.History(self.text) # self.pollinterval = 50 # millisec def get_standard_extension_names(self): return idleConf.GetExtensions(shell_only=True) reading = False executing = False canceled = False endoffile = False closing = False _stop_readline_flag = False def set_warning_stream(self, stream): global warning_stream warning_stream = stream def get_warning_stream(self): return warning_stream def toggle_debugger(self, event=None): if self.executing: tkMessageBox.showerror("Don't debug now", "You can only toggle the debugger when idle", master=self.text) self.set_debugger_indicator() return "break" else: db = self.interp.getdebugger() if db: self.close_debugger() else: self.open_debugger() def set_debugger_indicator(self): db = self.interp.getdebugger() self.setvar("<<toggle-debugger>>", not not db) def toggle_jit_stack_viewer(self, event=None): pass # All we need is the variable def close_debugger(self): db = self.interp.getdebugger() if db: self.interp.setdebugger(None) db.close() if self.interp.rpcclt: RemoteDebugger.close_remote_debugger(self.interp.rpcclt) self.resetoutput() self.console.write("[DEBUG OFF]\n") sys.ps1 = ">>> " self.showprompt() self.set_debugger_indicator() def open_debugger(self): if self.interp.rpcclt: dbg_gui = RemoteDebugger.start_remote_debugger(self.interp.rpcclt, self) else: dbg_gui = Debugger.Debugger(self) self.interp.setdebugger(dbg_gui) dbg_gui.load_breakpoints() sys.ps1 = "[DEBUG ON]\n>>> " self.showprompt() self.set_debugger_indicator() def beginexecuting(self): "Helper for ModifiedInterpreter" self.resetoutput() self.executing = 1 def endexecuting(self): "Helper for ModifiedInterpreter" self.executing = 0 self.canceled = 0 self.showprompt() def close(self): "Extend EditorWindow.close()" if self.executing: response = tkMessageBox.askokcancel( "Kill?", "The program is still running!\n Do you want to kill it?", default="ok", parent=self.text) if response is False: return "cancel" self.stop_readline() self.canceled = True self.closing = True # Wait for poll_subprocess() rescheduling to stop self.text.after(2 * self.pollinterval, self.close2) def close2(self): return EditorWindow.close(self) def _close(self): "Extend EditorWindow._close(), shut down debugger and execution server" self.close_debugger() if use_subprocess: self.interp.kill_subprocess() # Restore std streams sys.stdout = self.save_stdout sys.stderr = self.save_stderr sys.stdin = self.save_stdin # Break cycles self.interp = None self.console = None self.flist.pyshell = None self.history = None EditorWindow._close(self) def ispythonsource(self, filename): "Override EditorWindow method: never remove the colorizer" return True def short_title(self): return self.shell_title COPYRIGHT = \ 'Type "copyright", "credits" or "license()" for more information.' def begin(self): self.resetoutput() if use_subprocess: nosub = '' client = self.interp.start_subprocess() if not client: self.close() return False else: nosub = "==== No Subprocess ====" self.write("Python %s on %s\n%s\n%s" % (sys.version, sys.platform, self.COPYRIGHT, nosub)) self.showprompt() import Tkinter Tkinter._default_root = None # 03Jan04 KBK What's this? return True def stop_readline(self): if not self.reading: # no nested mainloop to exit. return self._stop_readline_flag = True self.top.quit() def readline(self): save = self.reading try: self.reading = 1 self.top.mainloop() # nested mainloop() finally: self.reading = save if self._stop_readline_flag: self._stop_readline_flag = False return "" line = self.text.get("iomark", "end-1c") if len(line) == 0: # may be EOF if we quit our mainloop with Ctrl-C line = "\n" if isinstance(line, unicode): from idlelib import IOBinding try: line = line.encode(IOBinding.encoding) except UnicodeError: pass self.resetoutput() if self.canceled: self.canceled = 0 if not use_subprocess: raise KeyboardInterrupt if self.endoffile: self.endoffile = 0 line = "" return line def isatty(self): return True def cancel_callback(self, event=None): try: if self.text.compare("sel.first", "!=", "sel.last"): return # Active selection -- always use default binding except: pass if not (self.executing or self.reading): self.resetoutput() self.interp.write("KeyboardInterrupt\n") self.showprompt() return "break" self.endoffile = 0 self.canceled = 1 if (self.executing and self.interp.rpcclt): if self.interp.getdebugger(): self.interp.restart_subprocess() else: self.interp.interrupt_subprocess() if self.reading: self.top.quit() # exit the nested mainloop() in readline() return "break" def eof_callback(self, event): if self.executing and not self.reading: return # Let the default binding (delete next char) take over if not (self.text.compare("iomark", "==", "insert") and self.text.compare("insert", "==", "end-1c")): return # Let the default binding (delete next char) take over if not self.executing: self.resetoutput() self.close() else: self.canceled = 0 self.endoffile = 1 self.top.quit() return "break" def linefeed_callback(self, event): # Insert a linefeed without entering anything (still autoindented) if self.reading: self.text.insert("insert", "\n") self.text.see("insert") else: self.newline_and_indent_event(event) return "break" def enter_callback(self, event): if self.executing and not self.reading: return # Let the default binding (insert '\n') take over # If some text is selected, recall the selection # (but only if this before the I/O mark) try: sel = self.text.get("sel.first", "sel.last") if sel: if self.text.compare("sel.last", "<=", "iomark"): self.recall(sel, event) return "break" except: pass # If we're strictly before the line containing iomark, recall # the current line, less a leading prompt, less leading or # trailing whitespace if self.text.compare("insert", "<", "iomark linestart"): # Check if there's a relevant stdin range -- if so, use it prev = self.text.tag_prevrange("stdin", "insert") if prev and self.text.compare("insert", "<", prev[1]): self.recall(self.text.get(prev[0], prev[1]), event) return "break" next = self.text.tag_nextrange("stdin", "insert") if next and self.text.compare("insert lineend", ">=", next[0]): self.recall(self.text.get(next[0], next[1]), event) return "break" # No stdin mark -- just get the current line, less any prompt indices = self.text.tag_nextrange("console", "insert linestart") if indices and \ self.text.compare(indices[0], "<=", "insert linestart"): self.recall(self.text.get(indices[1], "insert lineend"), event) else: self.recall(self.text.get("insert linestart", "insert lineend"), event) return "break" # If we're between the beginning of the line and the iomark, i.e. # in the prompt area, move to the end of the prompt if self.text.compare("insert", "<", "iomark"): self.text.mark_set("insert", "iomark") # If we're in the current input and there's only whitespace # beyond the cursor, erase that whitespace first s = self.text.get("insert", "end-1c") if s and not s.strip(): self.text.delete("insert", "end-1c") # If we're in the current input before its last line, # insert a newline right at the insert point if self.text.compare("insert", "<", "end-1c linestart"): self.newline_and_indent_event(event) return "break" # We're in the last line; append a newline and submit it self.text.mark_set("insert", "end-1c") if self.reading: self.text.insert("insert", "\n") self.text.see("insert") else: self.newline_and_indent_event(event) self.text.tag_add("stdin", "iomark", "end-1c") self.text.update_idletasks() if self.reading: self.top.quit() # Break out of recursive mainloop() in raw_input() else: self.runit() return "break" def recall(self, s, event): # remove leading and trailing empty or whitespace lines s = re.sub(r'^\s*\n', '' , s) s = re.sub(r'\n\s*$', '', s) lines = s.split('\n') self.text.undo_block_start() try: self.text.tag_remove("sel", "1.0", "end") self.text.mark_set("insert", "end-1c") prefix = self.text.get("insert linestart", "insert") if prefix.rstrip().endswith(':'): self.newline_and_indent_event(event) prefix = self.text.get("insert linestart", "insert") self.text.insert("insert", lines[0].strip()) if len(lines) > 1: orig_base_indent = re.search(r'^([ \t]*)', lines[0]).group(0) new_base_indent = re.search(r'^([ \t]*)', prefix).group(0) for line in lines[1:]: if line.startswith(orig_base_indent): # replace orig base indentation with new indentation line = new_base_indent + line[len(orig_base_indent):] self.text.insert('insert', '\n'+line.rstrip()) finally: self.text.see("insert") self.text.undo_block_stop() def runit(self): line = self.text.get("iomark", "end-1c") # Strip off last newline and surrounding whitespace. # (To allow you to hit return twice to end a statement.) i = len(line) while i > 0 and line[i-1] in " \t": i = i-1 if i > 0 and line[i-1] == "\n": i = i-1 while i > 0 and line[i-1] in " \t": i = i-1 line = line[:i] more = self.interp.runsource(line) def open_stack_viewer(self, event=None): if self.interp.rpcclt: return self.interp.remote_stack_viewer() try: sys.last_traceback except: tkMessageBox.showerror("No stack trace", "There is no stack trace yet.\n" "(sys.last_traceback is not defined)", master=self.text) return from idlelib.StackViewer import StackBrowser sv = StackBrowser(self.root, self.flist) def view_restart_mark(self, event=None): self.text.see("iomark") self.text.see("restart") def restart_shell(self, event=None): "Callback for Run/Restart Shell Cntl-F6" self.interp.restart_subprocess(with_cwd=True) def showprompt(self): self.resetoutput() try: s = str(sys.ps1) except: s = "" self.console.write(s) self.text.mark_set("insert", "end-1c") self.set_line_and_column() self.io.reset_undo() def resetoutput(self): source = self.text.get("iomark", "end-1c") if self.history: self.history.history_store(source) if self.text.get("end-2c") != "\n": self.text.insert("end-1c", "\n") self.text.mark_set("iomark", "end-1c") self.set_line_and_column() sys.stdout.softspace = 0 def write(self, s, tags=()): try: self.text.mark_gravity("iomark", "right") OutputWindow.write(self, s, tags, "iomark") self.text.mark_gravity("iomark", "left") except: pass if self.canceled: self.canceled = 0 if not use_subprocess: raise KeyboardInterrupt def rmenu_check_cut(self): try: if self.text.compare('sel.first', '<', 'iomark'): return 'disabled' except TclError: # no selection, so the index 'sel.first' doesn't exist return 'disabled' return super(PyShell, self).rmenu_check_cut() def rmenu_check_paste(self): if self.text.compare('insert', '<', 'iomark'): return 'disabled' return super(PyShell, self).rmenu_check_paste() class PseudoFile(io.TextIOBase): def __init__(self, shell, tags, encoding=None): self.shell = shell self.tags = tags self.softspace = 0 self._encoding = encoding @property def encoding(self): return self._encoding @property def name(self): return '<%s>' % self.tags def isatty(self): return True class PseudoOutputFile(PseudoFile): def writable(self): return True def write(self, s): if self.closed: raise ValueError("write to closed file") if not isinstance(s, (basestring, bytearray)): raise TypeError('must be string, not ' + type(s).__name__) return self.shell.write(s, self.tags) class PseudoInputFile(PseudoFile): def __init__(self, shell, tags, encoding=None): PseudoFile.__init__(self, shell, tags, encoding) self._line_buffer = '' def readable(self): return True def read(self, size=-1): if self.closed: raise ValueError("read from closed file") if size is None: size = -1 elif not isinstance(size, int): raise TypeError('must be int, not ' + type(size).__name__) result = self._line_buffer self._line_buffer = '' if size < 0: while True: line = self.shell.readline() if not line: break result += line else: while len(result) < size: line = self.shell.readline() if not line: break result += line self._line_buffer = result[size:] result = result[:size] return result def readline(self, size=-1): if self.closed: raise ValueError("read from closed file") if size is None: size = -1 elif not isinstance(size, int): raise TypeError('must be int, not ' + type(size).__name__) line = self._line_buffer or self.shell.readline() if size < 0: size = len(line) self._line_buffer = line[size:] return line[:size] def close(self): self.shell.close() usage_msg = """\ USAGE: idle [-deins] [-t title] [file]* idle [-dns] [-t title] (-c cmd | -r file) [arg]* idle [-dns] [-t title] - [arg]* -h print this help message and exit -n run IDLE without a subprocess (see Help/IDLE Help for details) The following options will override the IDLE 'settings' configuration: -e open an edit window -i open a shell window The following options imply -i and will open a shell: -c cmd run the command in a shell, or -r file run script from file -d enable the debugger -s run $IDLESTARTUP or $PYTHONSTARTUP before anything else -t title set title of shell window A default edit window will be bypassed when -c, -r, or - are used. [arg]* are passed to the command (-c) or script (-r) in sys.argv[1:]. Examples: idle Open an edit window or shell depending on IDLE's configuration. idle foo.py foobar.py Edit the files, also open a shell if configured to start with shell. idle -est "Baz" foo.py Run $IDLESTARTUP or $PYTHONSTARTUP, edit foo.py, and open a shell window with the title "Baz". idle -c "import sys; print sys.argv" "foo" Open a shell window and run the command, passing "-c" in sys.argv[0] and "foo" in sys.argv[1]. idle -d -s -r foo.py "Hello World" Open a shell window, run a startup script, enable the debugger, and run foo.py, passing "foo.py" in sys.argv[0] and "Hello World" in sys.argv[1]. echo "import sys; print sys.argv" | idle - "foobar" Open a shell window, run the script piped in, passing '' in sys.argv[0] and "foobar" in sys.argv[1]. """ def main(): global flist, root, use_subprocess use_subprocess = True enable_shell = False enable_edit = False debug = False cmd = None script = None startup = False try: opts, args = getopt.getopt(sys.argv[1:], "c:deihnr:st:") except getopt.error, msg: sys.stderr.write("Error: %s\n" % str(msg)) sys.stderr.write(usage_msg) sys.exit(2) for o, a in opts: if o == '-c': cmd = a enable_shell = True if o == '-d': debug = True enable_shell = True if o == '-e': enable_edit = True if o == '-h': sys.stdout.write(usage_msg) sys.exit() if o == '-i': enable_shell = True if o == '-n': use_subprocess = False if o == '-r': script = a if os.path.isfile(script): pass else: print "No script file: ", script sys.exit() enable_shell = True if o == '-s': startup = True enable_shell = True if o == '-t': PyShell.shell_title = a enable_shell = True if args and args[0] == '-': cmd = sys.stdin.read() enable_shell = True # process sys.argv and sys.path: for i in range(len(sys.path)): sys.path[i] = os.path.abspath(sys.path[i]) if args and args[0] == '-': sys.argv = [''] + args[1:] elif cmd: sys.argv = ['-c'] + args elif script: sys.argv = [script] + args elif args: enable_edit = True pathx = [] for filename in args: pathx.append(os.path.dirname(filename)) for dir in pathx: dir = os.path.abspath(dir) if dir not in sys.path: sys.path.insert(0, dir) else: dir = os.getcwd() if not dir in sys.path: sys.path.insert(0, dir) # check the IDLE settings configuration (but command line overrides) edit_start = idleConf.GetOption('main', 'General', 'editor-on-startup', type='bool') enable_edit = enable_edit or edit_start enable_shell = enable_shell or not enable_edit # start editor and/or shell windows: root = Tk(className="Idle") fixwordbreaks(root) root.withdraw() flist = PyShellFileList(root) macosxSupport.setupApp(root, flist) if enable_edit: if not (cmd or script): for filename in args[:]: if flist.open(filename) is None: # filename is a directory actually, disconsider it args.remove(filename) if not args: flist.new() if enable_shell: shell = flist.open_shell() if not shell: return # couldn't open shell if macosxSupport.runningAsOSXApp() and flist.dict: # On OSX: when the user has double-clicked on a file that causes # IDLE to be launched the shell window will open just in front of # the file she wants to see. Lower the interpreter window when # there are open files. shell.top.lower() shell = flist.pyshell # handle remaining options: if debug: shell.open_debugger() if startup: filename = os.environ.get("IDLESTARTUP") or \ os.environ.get("PYTHONSTARTUP") if filename and os.path.isfile(filename): shell.interp.execfile(filename) if shell and cmd or script: shell.interp.runcommand("""if 1: import sys as _sys _sys.argv = %r del _sys \n""" % (sys.argv,)) if cmd: shell.interp.execsource(cmd) elif script: shell.interp.prepend_syspath(script) shell.interp.execfile(script) # Check for problematic OS X Tk versions and print a warning message # in the IDLE shell window; this is less intrusive than always opening # a separate window. tkversionwarning = macosxSupport.tkVersionWarning(root) if tkversionwarning: shell.interp.runcommand(''.join(("print('", tkversionwarning, "')"))) while flist.inversedict: # keep IDLE running while files are open. root.mainloop() root.destroy() if __name__ == "__main__": sys.modules['PyShell'] = sys.modules['__main__'] main()
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