python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/idlelib/iomenu.py

@@ -0,0 +1,574 @@
+import codecs
+from codecs import BOM_UTF8
+import os
+import re
+import shlex
+import sys
+import tempfile
+
+import tkinter.filedialog as tkFileDialog
+import tkinter.messagebox as tkMessageBox
+from tkinter.simpledialog import askstring
+
+import idlelib
+from idlelib.config import idleConf
+
+if idlelib.testing:  # Set True by test.test_idle to avoid setlocale.
+    encoding = 'utf-8'
+else:
+    # Try setting the locale, so that we can find out
+    # what encoding to use
+    try:
+        import locale
+        locale.setlocale(locale.LC_CTYPE, "")
+    except (ImportError, locale.Error):
+        pass
+
+    locale_decode = '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:
+            locale_encoding = locale.getdefaultlocale()[1]
+            codecs.lookup(locale_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
+            locale_encoding = locale.nl_langinfo(locale.CODESET)
+            if locale_encoding is None or locale_encoding == '':
+                # situation occurs on macOS
+                locale_encoding = 'ascii'
+            codecs.lookup(locale_encoding)
+        except (NameError, AttributeError, LookupError):
+            # Try getdefaultlocale: it parses environment variables,
+            # which may give a clue. Unfortunately, getdefaultlocale has
+            # bugs that can cause ValueError.
+            try:
+                locale_encoding = locale.getdefaultlocale()[1]
+                if locale_encoding is None or locale_encoding == '':
+                    # situation occurs on macOS
+                    locale_encoding = 'ascii'
+                codecs.lookup(locale_encoding)
+            except (ValueError, LookupError):
+                pass
+
+    locale_encoding = locale_encoding.lower()
+
+    encoding = locale_encoding
+    # Encoding is used in multiple files; locale_encoding nowhere.
+    # The only use of 'encoding' below is in _decode as initial value
+    # of deprecated block asking user for encoding.
+    # Perhaps use elsewhere should be reviewed.
+
+coding_re = re.compile(r'^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)', re.ASCII)
+blank_re = re.compile(r'^[ \t\f]*(?:[#\r\n]|$)', re.ASCII)
+
+def coding_spec(data):
+    """Return the encoding declaration according to PEP 263.
+
+    When checking encoded data, only the first two lines should be passed
+    in to avoid a UnicodeDecodeError if the rest of the data is not unicode.
+    The first two lines would contain the encoding specification.
+
+    Raise a LookupError if the encoding is declared but unknown.
+    """
+    if isinstance(data, bytes):
+        # This encoding might be wrong. However, the coding
+        # spec must be ASCII-only, so any non-ASCII characters
+        # around here will be ignored. Decoding to Latin-1 should
+        # never fail (except for memory outage)
+        lines = data.decode('iso-8859-1')
+    else:
+        lines = data
+    # consider only the first two lines
+    if '\n' in lines:
+        lst = lines.split('\n', 2)[:2]
+    elif '\r' in lines:
+        lst = lines.split('\r', 2)[:2]
+    else:
+        lst = [lines]
+    for line in lst:
+        match = coding_re.match(line)
+        if match is not None:
+            break
+        if not blank_re.match(line):
+            return None
+    else:
+        return None
+    name = match.group(1)
+    try:
+        codecs.lookup(name)
+    except LookupError:
+        # The standard encoding error does not indicate the encoding
+        raise LookupError("Unknown encoding: "+name)
+    return name
+
+
+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 = None
+        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 = r"(\r\n)|\n|\r"  # \r\n (Windows), \n (UNIX), or \r (Mac)
+    eol_re = re.compile(eol)
+    eol_convention = os.linesep  # default
+
+    def loadfile(self, filename):
+        try:
+            # open the file in binary mode so that we can handle
+            # end-of-line convention ourselves.
+            with open(filename, 'rb') as f:
+                two_lines = f.readline() + f.readline()
+                f.seek(0)
+                bytes = f.read()
+        except OSError as msg:
+            tkMessageBox.showerror("I/O Error", str(msg), parent=self.text)
+            return False
+        chars, converted = self._decode(two_lines, bytes)
+        if chars is None:
+            tkMessageBox.showerror("Decoding Error",
+                                   "File %s\nFailed to Decode" % filename,
+                                   parent=self.text)
+            return False
+        # We now convert all end-of-lines to '\n's
+        firsteol = self.eol_re.search(chars)
+        if firsteol:
+            self.eol_convention = firsteol.group(0)
+            chars = self.eol_re.sub(r"\n", chars)
+        self.text.delete("1.0", "end")
+        self.set_filename(None)
+        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 _decode(self, two_lines, bytes):
+        "Create a Unicode string."
+        chars = None
+        # Check presence of a UTF-8 signature first
+        if bytes.startswith(BOM_UTF8):
+            try:
+                chars = bytes[3:].decode("utf-8")
+            except UnicodeDecodeError:
+                # has UTF-8 signature, but fails to decode...
+                return None, False
+            else:
+                # Indicates that this file originally had a BOM
+                self.fileencoding = 'BOM'
+                return chars, False
+        # Next look for coding specification
+        try:
+            enc = coding_spec(two_lines)
+        except LookupError as 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,
+                parent = self.text)
+            enc = None
+        except UnicodeDecodeError:
+            return None, False
+        if enc:
+            try:
+                chars = str(bytes, enc)
+                self.fileencoding = enc
+                return chars, False
+            except UnicodeDecodeError:
+                pass
+        # Try ascii:
+        try:
+            chars = str(bytes, 'ascii')
+            self.fileencoding = None
+            return chars, False
+        except UnicodeDecodeError:
+            pass
+        # Try utf-8:
+        try:
+            chars = str(bytes, 'utf-8')
+            self.fileencoding = 'utf-8'
+            return chars, False
+        except UnicodeDecodeError:
+            pass
+        # Finally, try the locale's encoding. This is deprecated;
+        # the user should declare a non-ASCII encoding
+        try:
+            # 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 = encoding,
+                parent = self.editwin.text)
+
+            if enc:
+                chars = str(bytes, enc)
+                self.fileencoding = None
+            return chars, True
+        except (UnicodeDecodeError, LookupError):
+            pass
+        return None, False  # None on failure
+
+    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 = tkMessageBox.askyesnocancel(
+                  title="Save On Close",
+                  message=message,
+                  default=tkMessageBox.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):
+        self.fixlastline()
+        text = self.text.get("1.0", "end-1c")
+        if self.eol_convention != "\n":
+            text = text.replace("\n", self.eol_convention)
+        chars = self.encode(text)
+        try:
+            with open(filename, "wb") as f:
+                f.write(chars)
+            return True
+        except OSError as msg:
+            tkMessageBox.showerror("I/O Error", str(msg),
+                                   parent=self.text)
+            return False
+
+    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 == 'BOM':
+            return BOM_UTF8 + chars.encode("utf-8")
+        # 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
+        # Check if there is an encoding declared
+        try:
+            # a string, let coding_spec slice it to the first two lines
+            enc = coding_spec(chars)
+            failed = None
+        except LookupError as msg:
+            failed = msg
+            enc = None
+        else:
+            if not enc:
+                # PEP 3120: default source encoding is UTF-8
+                enc = 'utf-8'
+        if enc:
+            try:
+                return chars.encode(enc)
+            except UnicodeError:
+                failed = "Invalid encoding '%s'" % enc
+        tkMessageBox.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 BOM_UTF8 + chars.encode("utf-8")
+
+    def fixlastline(self):
+        c = self.text.get("end-2c")
+        if c != '\n':
+            self.text.insert("end-1c", "\n")
+
+    def print_window(self, event):
+        confirm = tkMessageBox.askokcancel(
+                  title="Print",
+                  message="Print to Default Printer",
+                  default=tkMessageBox.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
+                tkMessageBox.showerror("Print status", output, parent=self.text)
+        else:  #no printing for this platform
+            message = "Printing is not enabled for this platform: %s" % platform
+            tkMessageBox.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 = tkFileDialog.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 = tkFileDialog.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)