mirror of
https://github.com/python/cpython.git
synced 2025-11-04 07:31:38 +00:00
546 lines
19 KiB
Python
546 lines
19 KiB
Python
import os
|
|
import types
|
|
import sys
|
|
import codecs
|
|
import tempfile
|
|
import tkinter.filedialog as tkFileDialog
|
|
import tkinter.messagebox as tkMessageBox
|
|
import re
|
|
from tkinter import *
|
|
from tkinter.simpledialog import askstring
|
|
|
|
from idlelib.configHandler import idleConf
|
|
|
|
from codecs import BOM_UTF8
|
|
|
|
# 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
|
|
|
|
# Encoding for file names
|
|
filesystemencoding = sys.getfilesystemencoding() ### currently unused
|
|
|
|
locale_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:
|
|
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 is '':
|
|
# situation occurs on Mac OS X
|
|
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 is '':
|
|
# situation occurs on Mac OS X
|
|
locale_encoding = 'ascii'
|
|
codecs.lookup(locale_encoding)
|
|
except (ValueError, LookupError):
|
|
pass
|
|
|
|
locale_encoding = locale_encoding.lower()
|
|
|
|
encoding = locale_encoding ### KBK 07Sep07 This is used all over IDLE, check!
|
|
### 'encoding' is used below in encode(), check!
|
|
|
|
coding_re = re.compile("coding[:=]\s*([-\w_.]+)")
|
|
|
|
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]
|
|
elif '\r' in lines:
|
|
lst = lines.split('\r')[:2]
|
|
else:
|
|
lst = list(lines)
|
|
str = '\n'.join(lst)
|
|
match = coding_re.search(str)
|
|
if not match:
|
|
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:
|
|
|
|
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):
|
|
if self.editwin.flist:
|
|
if not editFile:
|
|
filename = self.askopenfile()
|
|
else:
|
|
filename=editFile
|
|
if filename:
|
|
# If the current window has no filename and hasn't been
|
|
# modified, we replace its contents (no loss). Otherwise
|
|
# we open a new window. But we won't replace the
|
|
# shell window (which has an interp(reter) attribute), which
|
|
# gets set to "not modified" at every new prompt.
|
|
try:
|
|
interp = self.editwin.interp
|
|
except AttributeError:
|
|
interp = None
|
|
if not self.filename and self.get_saved() and not interp:
|
|
self.editwin.flist.open(filename, self.loadfile)
|
|
else:
|
|
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"
|
|
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.
|
|
f = open(filename,'rb')
|
|
two_lines = f.readline() + f.readline()
|
|
f.seek(0)
|
|
bytes = f.read()
|
|
f.close()
|
|
except IOError as msg:
|
|
tkMessageBox.showerror("I/O Error", str(msg), master=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.see("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,
|
|
master = 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 = locale_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")
|
|
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)
|
|
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:
|
|
f = open(filename, "wb")
|
|
f.write(chars)
|
|
f.flush()
|
|
f.close()
|
|
return True
|
|
except IOError as msg:
|
|
tkMessageBox.showerror("I/O Error", str(msg),
|
|
master=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,
|
|
master = 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):
|
|
m = tkMessageBox.Message(
|
|
title="Print",
|
|
message="Print to Default Printer",
|
|
icon=tkMessageBox.QUESTION,
|
|
type=tkMessageBox.OKCANCEL,
|
|
default=tkMessageBox.OK,
|
|
master=self.text)
|
|
reply = m.show()
|
|
if reply != tkMessageBox.OK:
|
|
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=1
|
|
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=0
|
|
if printPlatform: #we can try to print for this platform
|
|
command = command % 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, master=self.text)
|
|
else: #no printing for this platform
|
|
message="Printing is not enabled for this platform: %s" % platform
|
|
tkMessageBox.showinfo("Print status", message, master=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", "*"),
|
|
]
|
|
|
|
def askopenfile(self):
|
|
dir, base = self.defaultfilename("open")
|
|
if not self.opendialog:
|
|
self.opendialog = tkFileDialog.Open(master=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 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)
|
|
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 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__":
|
|
test()
|