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| import io | |
| import os | |
| import shlex | |
| import sys | |
| import tempfile | |
| import tokenize | |
| from tkinter import filedialog | |
| from tkinter import messagebox | |
| from tkinter.simpledialog import askstring | |
| from idlelib.config import idleConf | |
| from idlelib.util import py_extensions | |
| py_extensions = ' '.join("*"+ext for ext in py_extensions) | |
| encoding = 'utf-8' | |
| errors = 'surrogatepass' if sys.platform == 'win32' else 'surrogateescape' | |
| class IOBinding: | |
| # One instance per editor Window so methods know which to save, close. | |
| # Open returns focus to self.editwin if aborted. | |
| # EditorWindow.open_module, others, belong here. | |
| def __init__(self, editwin): | |
| self.editwin = editwin | |
| self.text = editwin.text | |
| self.__id_open = self.text.bind("<<open-window-from-file>>", self.open) | |
| self.__id_save = self.text.bind("<<save-window>>", self.save) | |
| self.__id_saveas = self.text.bind("<<save-window-as-file>>", | |
| self.save_as) | |
| self.__id_savecopy = self.text.bind("<<save-copy-of-window-as-file>>", | |
| self.save_a_copy) | |
| self.fileencoding = 'utf-8' | |
| self.__id_print = self.text.bind("<<print-window>>", self.print_window) | |
| def close(self): | |
| # Undo command bindings | |
| self.text.unbind("<<open-window-from-file>>", self.__id_open) | |
| self.text.unbind("<<save-window>>", self.__id_save) | |
| self.text.unbind("<<save-window-as-file>>",self.__id_saveas) | |
| self.text.unbind("<<save-copy-of-window-as-file>>", self.__id_savecopy) | |
| self.text.unbind("<<print-window>>", self.__id_print) | |
| # Break cycles | |
| self.editwin = None | |
| self.text = None | |
| self.filename_change_hook = None | |
| def get_saved(self): | |
| return self.editwin.get_saved() | |
| def set_saved(self, flag): | |
| self.editwin.set_saved(flag) | |
| def reset_undo(self): | |
| self.editwin.reset_undo() | |
| filename_change_hook = None | |
| def set_filename_change_hook(self, hook): | |
| self.filename_change_hook = hook | |
| filename = None | |
| dirname = None | |
| def set_filename(self, filename): | |
| if filename and os.path.isdir(filename): | |
| self.filename = None | |
| self.dirname = filename | |
| else: | |
| self.filename = filename | |
| self.dirname = None | |
| self.set_saved(1) | |
| if self.filename_change_hook: | |
| self.filename_change_hook() | |
| def open(self, event=None, editFile=None): | |
| flist = self.editwin.flist | |
| # Save in case parent window is closed (ie, during askopenfile()). | |
| if flist: | |
| if not editFile: | |
| filename = self.askopenfile() | |
| else: | |
| filename=editFile | |
| if filename: | |
| # If editFile is valid and already open, flist.open will | |
| # shift focus to its existing window. | |
| # If the current window exists and is a fresh unnamed, | |
| # unmodified editor window (not an interpreter shell), | |
| # pass self.loadfile to flist.open so it will load the file | |
| # in the current window (if the file is not already open) | |
| # instead of a new window. | |
| if (self.editwin and | |
| not getattr(self.editwin, 'interp', None) and | |
| not self.filename and | |
| self.get_saved()): | |
| flist.open(filename, self.loadfile) | |
| else: | |
| flist.open(filename) | |
| else: | |
| if self.text: | |
| self.text.focus_set() | |
| return "break" | |
| # Code for use outside IDLE: | |
| if self.get_saved(): | |
| reply = self.maybesave() | |
| if reply == "cancel": | |
| self.text.focus_set() | |
| return "break" | |
| if not editFile: | |
| filename = self.askopenfile() | |
| else: | |
| filename=editFile | |
| if filename: | |
| self.loadfile(filename) | |
| else: | |
| self.text.focus_set() | |
| return "break" | |
| eol_convention = os.linesep # default | |
| def loadfile(self, filename): | |
| try: | |
| try: | |
| with tokenize.open(filename) as f: | |
| chars = f.read() | |
| fileencoding = f.encoding | |
| eol_convention = f.newlines | |
| converted = False | |
| except (UnicodeDecodeError, SyntaxError): | |
| # Wait for the editor window to appear | |
| self.editwin.text.update() | |
| enc = askstring( | |
| "Specify file encoding", | |
| "The file's encoding is invalid for Python 3.x.\n" | |
| "IDLE will convert it to UTF-8.\n" | |
| "What is the current encoding of the file?", | |
| initialvalue='utf-8', | |
| parent=self.editwin.text) | |
| with open(filename, encoding=enc) as f: | |
| chars = f.read() | |
| fileencoding = f.encoding | |
| eol_convention = f.newlines | |
| converted = True | |
| except OSError as err: | |
| messagebox.showerror("I/O Error", str(err), parent=self.text) | |
| return False | |
| except UnicodeDecodeError: | |
| messagebox.showerror("Decoding Error", | |
| "File %s\nFailed to Decode" % filename, | |
| parent=self.text) | |
| return False | |
| if not isinstance(eol_convention, str): | |
| # If the file does not contain line separators, it is None. | |
| # If the file contains mixed line separators, it is a tuple. | |
| if eol_convention is not None: | |
| messagebox.showwarning("Mixed Newlines", | |
| "Mixed newlines detected.\n" | |
| "The file will be changed on save.", | |
| parent=self.text) | |
| converted = True | |
| eol_convention = os.linesep # default | |
| self.text.delete("1.0", "end") | |
| self.set_filename(None) | |
| self.fileencoding = fileencoding | |
| self.eol_convention = eol_convention | |
| self.text.insert("1.0", chars) | |
| self.reset_undo() | |
| self.set_filename(filename) | |
| if converted: | |
| # We need to save the conversion results first | |
| # before being able to execute the code | |
| self.set_saved(False) | |
| self.text.mark_set("insert", "1.0") | |
| self.text.yview("insert") | |
| self.updaterecentfileslist(filename) | |
| return True | |
| def maybesave(self): | |
| if self.get_saved(): | |
| return "yes" | |
| message = "Do you want to save %s before closing?" % ( | |
| self.filename or "this untitled document") | |
| confirm = messagebox.askyesnocancel( | |
| title="Save On Close", | |
| message=message, | |
| default=messagebox.YES, | |
| parent=self.text) | |
| if confirm: | |
| reply = "yes" | |
| self.save(None) | |
| if not self.get_saved(): | |
| reply = "cancel" | |
| elif confirm is None: | |
| reply = "cancel" | |
| else: | |
| reply = "no" | |
| self.text.focus_set() | |
| return reply | |
| def save(self, event): | |
| if not self.filename: | |
| self.save_as(event) | |
| else: | |
| if self.writefile(self.filename): | |
| self.set_saved(True) | |
| try: | |
| self.editwin.store_file_breaks() | |
| except AttributeError: # may be a PyShell | |
| pass | |
| self.text.focus_set() | |
| return "break" | |
| def save_as(self, event): | |
| filename = self.asksavefile() | |
| if filename: | |
| if self.writefile(filename): | |
| self.set_filename(filename) | |
| self.set_saved(1) | |
| try: | |
| self.editwin.store_file_breaks() | |
| except AttributeError: | |
| pass | |
| self.text.focus_set() | |
| self.updaterecentfileslist(filename) | |
| return "break" | |
| def save_a_copy(self, event): | |
| filename = self.asksavefile() | |
| if filename: | |
| self.writefile(filename) | |
| self.text.focus_set() | |
| self.updaterecentfileslist(filename) | |
| return "break" | |
| def writefile(self, filename): | |
| text = self.fixnewlines() | |
| chars = self.encode(text) | |
| try: | |
| with open(filename, "wb") as f: | |
| f.write(chars) | |
| f.flush() | |
| os.fsync(f.fileno()) | |
| return True | |
| except OSError as msg: | |
| messagebox.showerror("I/O Error", str(msg), | |
| parent=self.text) | |
| return False | |
| def fixnewlines(self): | |
| """Return text with os eols. | |
| Add prompts if shell else final \n if missing. | |
| """ | |
| if hasattr(self.editwin, "interp"): # Saving shell. | |
| text = self.editwin.get_prompt_text('1.0', self.text.index('end-1c')) | |
| else: | |
| if self.text.get("end-2c") != '\n': | |
| self.text.insert("end-1c", "\n") # Changes 'end-1c' value. | |
| text = self.text.get('1.0', "end-1c") | |
| if self.eol_convention != "\n": | |
| text = text.replace("\n", self.eol_convention) | |
| return text | |
| def encode(self, chars): | |
| if isinstance(chars, bytes): | |
| # This is either plain ASCII, or Tk was returning mixed-encoding | |
| # text to us. Don't try to guess further. | |
| return chars | |
| # Preserve a BOM that might have been present on opening | |
| if self.fileencoding == 'utf-8-sig': | |
| return chars.encode('utf-8-sig') | |
| # See whether there is anything non-ASCII in it. | |
| # If not, no need to figure out the encoding. | |
| try: | |
| return chars.encode('ascii') | |
| except UnicodeEncodeError: | |
| pass | |
| # Check if there is an encoding declared | |
| try: | |
| encoded = chars.encode('ascii', 'replace') | |
| enc, _ = tokenize.detect_encoding(io.BytesIO(encoded).readline) | |
| return chars.encode(enc) | |
| except SyntaxError as err: | |
| failed = str(err) | |
| except UnicodeEncodeError: | |
| failed = "Invalid encoding '%s'" % enc | |
| messagebox.showerror( | |
| "I/O Error", | |
| "%s.\nSaving as UTF-8" % failed, | |
| parent=self.text) | |
| # Fallback: save as UTF-8, with BOM - ignoring the incorrect | |
| # declared encoding | |
| return chars.encode('utf-8-sig') | |
| def print_window(self, event): | |
| confirm = messagebox.askokcancel( | |
| title="Print", | |
| message="Print to Default Printer", | |
| default=messagebox.OK, | |
| parent=self.text) | |
| if not confirm: | |
| self.text.focus_set() | |
| return "break" | |
| tempfilename = None | |
| saved = self.get_saved() | |
| if saved: | |
| filename = self.filename | |
| # shell undo is reset after every prompt, looks saved, probably isn't | |
| if not saved or filename is None: | |
| (tfd, tempfilename) = tempfile.mkstemp(prefix='IDLE_tmp_') | |
| filename = tempfilename | |
| os.close(tfd) | |
| if not self.writefile(tempfilename): | |
| os.unlink(tempfilename) | |
| return "break" | |
| platform = os.name | |
| printPlatform = True | |
| if platform == 'posix': #posix platform | |
| command = idleConf.GetOption('main','General', | |
| 'print-command-posix') | |
| command = command + " 2>&1" | |
| elif platform == 'nt': #win32 platform | |
| command = idleConf.GetOption('main','General','print-command-win') | |
| else: #no printing for this platform | |
| printPlatform = False | |
| if printPlatform: #we can try to print for this platform | |
| command = command % shlex.quote(filename) | |
| pipe = os.popen(command, "r") | |
| # things can get ugly on NT if there is no printer available. | |
| output = pipe.read().strip() | |
| status = pipe.close() | |
| if status: | |
| output = "Printing failed (exit status 0x%x)\n" % \ | |
| status + output | |
| if output: | |
| output = "Printing command: %s\n" % repr(command) + output | |
| messagebox.showerror("Print status", output, parent=self.text) | |
| else: #no printing for this platform | |
| message = "Printing is not enabled for this platform: %s" % platform | |
| messagebox.showinfo("Print status", message, parent=self.text) | |
| if tempfilename: | |
| os.unlink(tempfilename) | |
| return "break" | |
| opendialog = None | |
| savedialog = None | |
| filetypes = ( | |
| ("Python files", py_extensions, "TEXT"), | |
| ("Text files", "*.txt", "TEXT"), | |
| ("All files", "*"), | |
| ) | |
| defaultextension = '.py' if sys.platform == 'darwin' else '' | |
| def askopenfile(self): | |
| dir, base = self.defaultfilename("open") | |
| if not self.opendialog: | |
| self.opendialog = filedialog.Open(parent=self.text, | |
| filetypes=self.filetypes) | |
| filename = self.opendialog.show(initialdir=dir, initialfile=base) | |
| return filename | |
| def defaultfilename(self, mode="open"): | |
| if self.filename: | |
| return os.path.split(self.filename) | |
| elif self.dirname: | |
| return self.dirname, "" | |
| else: | |
| try: | |
| pwd = os.getcwd() | |
| except OSError: | |
| pwd = "" | |
| return pwd, "" | |
| def asksavefile(self): | |
| dir, base = self.defaultfilename("save") | |
| if not self.savedialog: | |
| self.savedialog = filedialog.SaveAs( | |
| parent=self.text, | |
| filetypes=self.filetypes, | |
| defaultextension=self.defaultextension) | |
| filename = self.savedialog.show(initialdir=dir, initialfile=base) | |
| return filename | |
| def updaterecentfileslist(self,filename): | |
| "Update recent file list on all editor windows" | |
| if self.editwin.flist: | |
| self.editwin.update_recent_files_list(filename) | |
| def _io_binding(parent): # htest # | |
| from tkinter import Toplevel, Text | |
| root = Toplevel(parent) | |
| root.title("Test IOBinding") | |
| x, y = map(int, parent.geometry().split('+')[1:]) | |
| root.geometry("+%d+%d" % (x, y + 175)) | |
| class MyEditWin: | |
| def __init__(self, text): | |
| self.text = text | |
| self.flist = None | |
| self.text.bind("<Control-o>", self.open) | |
| self.text.bind('<Control-p>', self.print) | |
| self.text.bind("<Control-s>", self.save) | |
| self.text.bind("<Alt-s>", self.saveas) | |
| self.text.bind('<Control-c>', self.savecopy) | |
| def get_saved(self): return 0 | |
| def set_saved(self, flag): pass | |
| def reset_undo(self): pass | |
| def open(self, event): | |
| self.text.event_generate("<<open-window-from-file>>") | |
| def print(self, event): | |
| self.text.event_generate("<<print-window>>") | |
| def save(self, event): | |
| self.text.event_generate("<<save-window>>") | |
| def saveas(self, event): | |
| self.text.event_generate("<<save-window-as-file>>") | |
| def savecopy(self, event): | |
| self.text.event_generate("<<save-copy-of-window-as-file>>") | |
| text = Text(root) | |
| text.pack() | |
| text.focus_set() | |
| editwin = MyEditWin(text) | |
| IOBinding(editwin) | |
| if __name__ == "__main__": | |
| from unittest import main | |
| main('idlelib.idle_test.test_iomenu', verbosity=2, exit=False) | |
| from idlelib.idle_test.htest import run | |
| run(_io_binding) | |