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575 lines
20 KiB
575 lines
20 KiB
6 years ago
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import codecs
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from codecs import BOM_UTF8
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import os
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import re
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import shlex
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import sys
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import tempfile
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import tkinter.filedialog as tkFileDialog
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import tkinter.messagebox as tkMessageBox
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from tkinter.simpledialog import askstring
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import idlelib
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from idlelib.config import idleConf
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if idlelib.testing: # Set True by test.test_idle to avoid setlocale.
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encoding = 'utf-8'
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else:
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# Try setting the locale, so that we can find out
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# what encoding to use
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try:
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import locale
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locale.setlocale(locale.LC_CTYPE, "")
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except (ImportError, locale.Error):
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pass
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locale_decode = 'ascii'
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if sys.platform == 'win32':
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# On Windows, we could use "mbcs". However, to give the user
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# a portable encoding name, we need to find the code page
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try:
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locale_encoding = locale.getdefaultlocale()[1]
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codecs.lookup(locale_encoding)
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except LookupError:
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pass
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else:
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try:
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# Different things can fail here: the locale module may not be
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# loaded, it may not offer nl_langinfo, or CODESET, or the
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# resulting codeset may be unknown to Python. We ignore all
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# these problems, falling back to ASCII
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locale_encoding = locale.nl_langinfo(locale.CODESET)
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if locale_encoding is None or locale_encoding == '':
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# situation occurs on macOS
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locale_encoding = 'ascii'
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codecs.lookup(locale_encoding)
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except (NameError, AttributeError, LookupError):
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# Try getdefaultlocale: it parses environment variables,
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# which may give a clue. Unfortunately, getdefaultlocale has
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# bugs that can cause ValueError.
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try:
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locale_encoding = locale.getdefaultlocale()[1]
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if locale_encoding is None or locale_encoding == '':
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# situation occurs on macOS
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locale_encoding = 'ascii'
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codecs.lookup(locale_encoding)
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except (ValueError, LookupError):
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pass
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locale_encoding = locale_encoding.lower()
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encoding = locale_encoding
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# Encoding is used in multiple files; locale_encoding nowhere.
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# The only use of 'encoding' below is in _decode as initial value
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# of deprecated block asking user for encoding.
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# Perhaps use elsewhere should be reviewed.
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coding_re = re.compile(r'^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)', re.ASCII)
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blank_re = re.compile(r'^[ \t\f]*(?:[#\r\n]|$)', re.ASCII)
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def coding_spec(data):
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"""Return the encoding declaration according to PEP 263.
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When checking encoded data, only the first two lines should be passed
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in to avoid a UnicodeDecodeError if the rest of the data is not unicode.
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The first two lines would contain the encoding specification.
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Raise a LookupError if the encoding is declared but unknown.
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"""
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if isinstance(data, bytes):
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# This encoding might be wrong. However, the coding
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# spec must be ASCII-only, so any non-ASCII characters
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# around here will be ignored. Decoding to Latin-1 should
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# never fail (except for memory outage)
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lines = data.decode('iso-8859-1')
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else:
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lines = data
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# consider only the first two lines
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if '\n' in lines:
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lst = lines.split('\n', 2)[:2]
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elif '\r' in lines:
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lst = lines.split('\r', 2)[:2]
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else:
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lst = [lines]
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for line in lst:
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match = coding_re.match(line)
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if match is not None:
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break
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if not blank_re.match(line):
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return None
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else:
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return None
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name = match.group(1)
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try:
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codecs.lookup(name)
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except LookupError:
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# The standard encoding error does not indicate the encoding
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raise LookupError("Unknown encoding: "+name)
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return name
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class IOBinding:
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# One instance per editor Window so methods know which to save, close.
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# Open returns focus to self.editwin if aborted.
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# EditorWindow.open_module, others, belong here.
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def __init__(self, editwin):
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self.editwin = editwin
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self.text = editwin.text
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self.__id_open = self.text.bind("<<open-window-from-file>>", self.open)
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self.__id_save = self.text.bind("<<save-window>>", self.save)
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self.__id_saveas = self.text.bind("<<save-window-as-file>>",
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self.save_as)
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self.__id_savecopy = self.text.bind("<<save-copy-of-window-as-file>>",
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self.save_a_copy)
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self.fileencoding = None
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self.__id_print = self.text.bind("<<print-window>>", self.print_window)
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def close(self):
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# Undo command bindings
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self.text.unbind("<<open-window-from-file>>", self.__id_open)
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self.text.unbind("<<save-window>>", self.__id_save)
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self.text.unbind("<<save-window-as-file>>",self.__id_saveas)
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self.text.unbind("<<save-copy-of-window-as-file>>", self.__id_savecopy)
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self.text.unbind("<<print-window>>", self.__id_print)
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# Break cycles
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self.editwin = None
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self.text = None
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self.filename_change_hook = None
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def get_saved(self):
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return self.editwin.get_saved()
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def set_saved(self, flag):
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self.editwin.set_saved(flag)
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def reset_undo(self):
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self.editwin.reset_undo()
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filename_change_hook = None
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def set_filename_change_hook(self, hook):
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self.filename_change_hook = hook
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filename = None
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dirname = None
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def set_filename(self, filename):
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if filename and os.path.isdir(filename):
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self.filename = None
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self.dirname = filename
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else:
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self.filename = filename
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self.dirname = None
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self.set_saved(1)
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if self.filename_change_hook:
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self.filename_change_hook()
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def open(self, event=None, editFile=None):
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flist = self.editwin.flist
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# Save in case parent window is closed (ie, during askopenfile()).
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if flist:
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if not editFile:
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filename = self.askopenfile()
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else:
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filename=editFile
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if filename:
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# If editFile is valid and already open, flist.open will
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# shift focus to its existing window.
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# If the current window exists and is a fresh unnamed,
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# unmodified editor window (not an interpreter shell),
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# pass self.loadfile to flist.open so it will load the file
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# in the current window (if the file is not already open)
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# instead of a new window.
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if (self.editwin and
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not getattr(self.editwin, 'interp', None) and
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not self.filename and
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self.get_saved()):
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flist.open(filename, self.loadfile)
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else:
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flist.open(filename)
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else:
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if self.text:
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self.text.focus_set()
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return "break"
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# Code for use outside IDLE:
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if self.get_saved():
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reply = self.maybesave()
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if reply == "cancel":
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self.text.focus_set()
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return "break"
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if not editFile:
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filename = self.askopenfile()
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else:
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filename=editFile
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if filename:
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self.loadfile(filename)
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else:
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self.text.focus_set()
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return "break"
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eol = r"(\r\n)|\n|\r" # \r\n (Windows), \n (UNIX), or \r (Mac)
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eol_re = re.compile(eol)
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eol_convention = os.linesep # default
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def loadfile(self, filename):
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try:
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# open the file in binary mode so that we can handle
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# end-of-line convention ourselves.
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with open(filename, 'rb') as f:
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two_lines = f.readline() + f.readline()
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f.seek(0)
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bytes = f.read()
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except OSError as msg:
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tkMessageBox.showerror("I/O Error", str(msg), parent=self.text)
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return False
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chars, converted = self._decode(two_lines, bytes)
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if chars is None:
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tkMessageBox.showerror("Decoding Error",
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"File %s\nFailed to Decode" % filename,
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parent=self.text)
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return False
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# We now convert all end-of-lines to '\n's
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firsteol = self.eol_re.search(chars)
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if firsteol:
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self.eol_convention = firsteol.group(0)
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chars = self.eol_re.sub(r"\n", chars)
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self.text.delete("1.0", "end")
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self.set_filename(None)
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self.text.insert("1.0", chars)
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self.reset_undo()
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self.set_filename(filename)
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if converted:
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# We need to save the conversion results first
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# before being able to execute the code
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self.set_saved(False)
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self.text.mark_set("insert", "1.0")
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self.text.yview("insert")
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self.updaterecentfileslist(filename)
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return True
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def _decode(self, two_lines, bytes):
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"Create a Unicode string."
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chars = None
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# Check presence of a UTF-8 signature first
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if bytes.startswith(BOM_UTF8):
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try:
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chars = bytes[3:].decode("utf-8")
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except UnicodeDecodeError:
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# has UTF-8 signature, but fails to decode...
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return None, False
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else:
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# Indicates that this file originally had a BOM
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self.fileencoding = 'BOM'
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return chars, False
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# Next look for coding specification
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try:
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enc = coding_spec(two_lines)
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except LookupError as name:
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tkMessageBox.showerror(
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title="Error loading the file",
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message="The encoding '%s' is not known to this Python "\
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"installation. The file may not display correctly" % name,
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parent = self.text)
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enc = None
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except UnicodeDecodeError:
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return None, False
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if enc:
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try:
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chars = str(bytes, enc)
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self.fileencoding = enc
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return chars, False
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except UnicodeDecodeError:
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pass
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# Try ascii:
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try:
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chars = str(bytes, 'ascii')
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self.fileencoding = None
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return chars, False
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except UnicodeDecodeError:
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pass
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# Try utf-8:
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try:
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chars = str(bytes, 'utf-8')
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self.fileencoding = 'utf-8'
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return chars, False
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except UnicodeDecodeError:
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pass
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# Finally, try the locale's encoding. This is deprecated;
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# the user should declare a non-ASCII encoding
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try:
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# Wait for the editor window to appear
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self.editwin.text.update()
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enc = askstring(
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"Specify file encoding",
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"The file's encoding is invalid for Python 3.x.\n"
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"IDLE will convert it to UTF-8.\n"
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"What is the current encoding of the file?",
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initialvalue = encoding,
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parent = self.editwin.text)
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if enc:
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chars = str(bytes, enc)
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self.fileencoding = None
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return chars, True
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except (UnicodeDecodeError, LookupError):
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pass
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return None, False # None on failure
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def maybesave(self):
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if self.get_saved():
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return "yes"
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message = "Do you want to save %s before closing?" % (
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self.filename or "this untitled document")
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confirm = tkMessageBox.askyesnocancel(
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title="Save On Close",
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message=message,
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default=tkMessageBox.YES,
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parent=self.text)
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if confirm:
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reply = "yes"
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self.save(None)
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if not self.get_saved():
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reply = "cancel"
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elif confirm is None:
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reply = "cancel"
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else:
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reply = "no"
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self.text.focus_set()
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return reply
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def save(self, event):
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if not self.filename:
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self.save_as(event)
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else:
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if self.writefile(self.filename):
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self.set_saved(True)
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try:
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self.editwin.store_file_breaks()
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except AttributeError: # may be a PyShell
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pass
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self.text.focus_set()
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return "break"
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def save_as(self, event):
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filename = self.asksavefile()
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if filename:
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if self.writefile(filename):
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self.set_filename(filename)
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self.set_saved(1)
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try:
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self.editwin.store_file_breaks()
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except AttributeError:
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pass
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self.text.focus_set()
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self.updaterecentfileslist(filename)
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return "break"
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def save_a_copy(self, event):
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filename = self.asksavefile()
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if filename:
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self.writefile(filename)
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self.text.focus_set()
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self.updaterecentfileslist(filename)
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return "break"
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def writefile(self, filename):
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self.fixlastline()
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|
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)
|