diff options
Diffstat (limited to 'Tools/idle/IOBinding.py')
| -rw-r--r-- | Tools/idle/IOBinding.py | 448 |
1 files changed, 0 insertions, 448 deletions
diff --git a/Tools/idle/IOBinding.py b/Tools/idle/IOBinding.py deleted file mode 100644 index 8d654b9..0000000 --- a/Tools/idle/IOBinding.py +++ /dev/null @@ -1,448 +0,0 @@ -import os -import types -import sys -import codecs -import re -import tempfile -import tkFileDialog -import tkMessageBox -from IdleConf import idleconf - -#$ event <<open-window-from-file>> -#$ win <Control-o> -#$ unix <Control-x><Control-f> - -#$ event <<save-window>> -#$ win <Control-s> -#$ unix <Control-x><Control-s> - -#$ event <<save-window-as-file>> -#$ win <Alt-s> -#$ unix <Control-x><Control-w> - -#$ event <<save-copy-of-window-as-file>> -#$ win <Alt-Shift-s> -#$ unix <Control-x><w> - -#$ event <<print-window>> -#$ win <Control-p> -#$ unix <Control-x><Control-p> - -try: - from codecs import BOM_UTF8 -except ImportError: - # only available since Python 2.3 - BOM_UTF8 = '\xef\xbb\xbf' - -# Try setting the locale, so that we can find out -# what encoding to use -try: - import locale - locale.setlocale(locale.LC_CTYPE, "") -except ImportError: - pass - -encoding = "ascii" -if sys.platform == 'win32': - # On Windows, we could use "mbcs". However, to give the user - # a portable encoding name, we need to find the code page - try: - encoding = locale.getdefaultlocale()[1] - codecs.lookup(encoding) - except LookupError: - pass -else: - try: - # Different things can fail here: the locale module may not be - # loaded, it may not offer nl_langinfo, or CODESET, or the - # resulting codeset may be unknown to Python. We ignore all - # these problems, falling back to ASCII - encoding = locale.nl_langinfo(locale.CODESET) - codecs.lookup(encoding) - except (NameError, AttributeError, LookupError): - # Try getdefaultlocale well: it parses environment variables, - # which may give a clue. Unfortunately, getdefaultlocale has - # bugs that can cause ValueError. - try: - encoding = locale.getdefaultlocale()[1] - codecs.lookup(encoding) - except (ValueError, LookupError): - pass - -encoding = encoding.lower() - -coding_re = re.compile("coding[:=]\s*([-\w_.]+)") -def coding_spec(str): - - """Return the encoding declaration according to PEP 263. - Raise LookupError if the encoding is declared but unknown.""" - - # Only consider the first two lines - str = str.split("\n")[:2] - str = "\n".join(str) - - match = coding_re.search(str) - if not match: - return None - name = match.group(1) - # Check whether the encoding is known - import codecs - try: - codecs.lookup(name) - except LookupError: - # The standard encoding error does not indicate the encoding - raise LookupError, "Unknown encoding "+name - return name - -class IOBinding: - - 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.__id_print = self.text.bind("<<print-window>>", self.print_window) - self.fileencoding = None - - 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 - - def set_filename(self, filename): - self.filename = filename - self.set_saved(1) - if self.filename_change_hook: - self.filename_change_hook() - - def open(self, event): - if self.editwin.flist: - filename = self.askopenfile() - if filename: - self.editwin.flist.open(filename) - else: - 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" - filename = self.askopenfile() - if filename: - self.loadfile(filename) - else: - self.text.focus_set() - return "break" - - def loadfile(self, filename): - try: - f = open(filename) - chars = f.read() - f.close() - except IOError, msg: - tkMessageBox.showerror("I/O Error", str(msg), master=self.text) - return False - - chars = self.decode(chars) - - self.text.delete("1.0", "end") - self.set_filename(None) - self.text.insert("1.0", chars) - self.reset_undo() - self.set_filename(filename) - self.text.mark_set("insert", "1.0") - self.text.see("insert") - return True - - def decode(self, chars): - # Try to create a Unicode string. If that fails, let Tcl try - # its best - - # Check presence of a UTF-8 signature first - if chars.startswith(BOM_UTF8): - try: - chars = chars[3:].decode("utf-8") - except UnicodeError: - # has UTF-8 signature, but fails to decode... - return chars - else: - # Indicates that this file originally had a BOM - self.fileencoding = BOM_UTF8 - return chars - - # Next look for coding specification - try: - enc = coding_spec(chars) - except LookupError, name: - tkMessageBox.showerror( - title="Error loading the file", - message="The encoding '%s' is not known to this Python "\ - "installation. The file may not display correctly" % name, - master = self.text) - enc = None - - if enc: - try: - return unicode(chars, enc) - except UnicodeError: - pass - - # If it is ASCII, we need not to record anything - try: - return unicode(chars, 'ascii') - except UnicodeError: - pass - - # Finally, try the locale's encoding. This is deprecated; - # the user should declare a non-ASCII encoding - try: - chars = unicode(chars, encoding) - self.fileencoding = encoding - except UnicodeError: - pass - return chars - - def maybesave(self): - if self.get_saved(): - return "yes" - message = "Do you want to save %s before closing?" % ( - self.filename or "this untitled document") - m = tkMessageBox.Message( - title="Save On Close", - message=message, - icon=tkMessageBox.QUESTION, - type=tkMessageBox.YESNOCANCEL, - master=self.text) - reply = m.show() - if reply == "yes": - self.save(None) - if not self.get_saved(): - reply = "cancel" - 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(1) - 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) - self.text.focus_set() - return "break" - - def save_a_copy(self, event): - filename = self.asksavefile() - if filename: - self.writefile(filename) - self.text.focus_set() - return "break" - - def print_window(self, event): - if self.get_saved(): - filename = self.filename - else: - (tfd, tfn) = tempfile.mkstemp() - os.close(tfd) - filename = tfn - if not self.writefile(filename): - os.unlink(tfn) - return "break" - edconf = idleconf.getsection('EditorWindow') - command = edconf.get('print-command') - command = command % filename - if os.name == 'posix': - command = command + " 2>&1" - pipe = os.popen(command, "r") - 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 - tkMessageBox.showerror("Print status", output, master=self.text) - return "break" - - def writefile(self, filename): - self.fixlastline() - chars = self.encode(self.text.get("1.0", "end-1c")) - try: - f = open(filename, "w") - f.write(chars) - f.close() - ## print "saved to", `filename` - return True - except IOError, msg: - tkMessageBox.showerror("I/O Error", str(msg), - master=self.text) - return False - - def encode(self, chars): - if isinstance(chars, types.StringType): - # This is either plain ASCII, or Tk was returning mixed-encoding - # text to us. Don't try to guess further. - return chars - - # See whether there is anything non-ASCII in it. - # If not, no need to figure out the encoding. - try: - return chars.encode('ascii') - except UnicodeError: - pass - - # If there is an encoding declared, try this first. - try: - enc = coding_spec(chars) - failed = None - except LookupError, msg: - failed = msg - enc = None - if enc: - try: - return chars.encode(enc) - except UnicodeError: - failed = "Invalid encoding '%s'" % enc - - if failed: - tkMessageBox.showerror( - "I/O Error", - "%s. Saving as UTF-8" % failed, - master = self.text) - - # If there was a UTF-8 signature, use that. This should not fail - if self.fileencoding == BOM_UTF8 or failed: - return BOM_UTF8 + chars.encode("utf-8") - - # Try the original file encoding next, if any - if self.fileencoding: - try: - return chars.encode(self.fileencoding) - except UnicodeError: - tkMessageBox.showerror( - "I/O Error", - "Cannot save this as '%s' anymore. Saving as UTF-8" % self.fileencoding, - master = self.text) - return BOM_UTF8 + chars.encode("utf-8") - - # Nothing was declared, and we had not determined an encoding - # on loading. Recommend an encoding line. - try: - chars = chars.encode(encoding) - enc = encoding - except UnicodeError: - chars = BOM_UTF8 + chars.encode("utf-8") - enc = "utf-8" - tkMessageBox.showerror( - "I/O Error", - "Non-ASCII found, yet no encoding declared. Add a line like\n" - "# -*- coding: %s -*- \nto your file" % enc, - master = self.text) - return chars - - def fixlastline(self): - c = self.text.get("end-2c") - if c != '\n': - self.text.insert("end-1c", "\n") - - opendialog = None - savedialog = None - - filetypes = [ - ("Python and text files", "*.py *.pyw *.txt", "TEXT"), - ("All text files", "*", "TEXT"), - ("All files", "*"), - ] - - def askopenfile(self): - dir, base = self.defaultfilename("open") - if not self.opendialog: - self.opendialog = tkFileDialog.Open(master=self.text, - filetypes=self.filetypes) - return self.opendialog.show(initialdir=dir, initialfile=base) - - def defaultfilename(self, mode="open"): - if self.filename: - return os.path.split(self.filename) - else: - try: - pwd = os.getcwd() - except os.error: - pwd = "" - return pwd, "" - - def asksavefile(self): - dir, base = self.defaultfilename("save") - if not self.savedialog: - self.savedialog = tkFileDialog.SaveAs(master=self.text, - filetypes=self.filetypes) - return self.savedialog.show(initialdir=dir, initialfile=base) - - -def test(): - root = Tk() - class MyEditWin: - def __init__(self, text): - self.text = text - self.flist = None - self.text.bind("<Control-o>", self.open) - self.text.bind("<Control-s>", self.save) - self.text.bind("<Alt-s>", self.save_as) - self.text.bind("<Alt-z>", self.save_a_copy) - 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 save(self, event): - self.text.event_generate("<<save-window>>") - def save_as(self, event): - self.text.event_generate("<<save-window-as-file>>") - def save_a_copy(self, event): - self.text.event_generate("<<save-copy-of-window-as-file>>") - text = Text(root) - text.pack() - text.focus_set() - editwin = MyEditWin(text) - io = IOBinding(editwin) - root.mainloop() - -if __name__ == "__main__": - from Tkinter import * - test() |