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//usr/local/lib/python3.9/idlelib/iomenu.py
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 import idlelib from idlelib.config import idleConf encoding = 'utf-8' if sys.platform == 'win32': errors = 'surrogatepass' else: errors = '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 final \n if needed and os eols." if (self.text.get("end-2c") != '\n' and not hasattr(self.editwin, "interp")): # Not shell. self.text.insert("end-1c", "\n") 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 *.pyw", "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)