585 lines
20 KiB
Python
585 lines
20 KiB
Python
# changes by dscherer@cmu.edu
|
|
# - IOBinding.open() replaces the current window with the opened file,
|
|
# if the current window is both unmodified and unnamed
|
|
# - IOBinding.loadfile() interprets Windows, UNIX, and Macintosh
|
|
# end-of-line conventions, instead of relying on the standard library,
|
|
# which will only understand the local convention.
|
|
|
|
import os
|
|
import types
|
|
import sys
|
|
import codecs
|
|
import tempfile
|
|
import tkFileDialog
|
|
import tkMessageBox
|
|
import re
|
|
from Tkinter import *
|
|
from SimpleDialog import SimpleDialog
|
|
|
|
from configHandler import idleConf
|
|
|
|
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, locale.Error):
|
|
pass
|
|
|
|
# Encoding for file names
|
|
filesystemencoding = sys.getfilesystemencoding()
|
|
|
|
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)
|
|
if encoding is None or encoding is '':
|
|
# situation occurs on Mac OS X
|
|
encoding = 'ascii'
|
|
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]
|
|
if encoding is None or encoding is '':
|
|
# situation occurs on Mac OS X
|
|
encoding = 'ascii'
|
|
codecs.lookup(encoding)
|
|
except (ValueError, LookupError):
|
|
pass
|
|
|
|
encoding = encoding.lower()
|
|
|
|
coding_re = re.compile("coding[:=]\s*([-\w_.]+)")
|
|
|
|
class EncodingMessage(SimpleDialog):
|
|
"Inform user that an encoding declaration is needed."
|
|
def __init__(self, master, enc):
|
|
self.should_edit = False
|
|
|
|
self.root = top = Toplevel(master)
|
|
top.bind("<Return>", self.return_event)
|
|
top.bind("<Escape>", self.do_ok)
|
|
top.protocol("WM_DELETE_WINDOW", self.wm_delete_window)
|
|
top.wm_title("I/O Warning")
|
|
top.wm_iconname("I/O Warning")
|
|
self.top = top
|
|
|
|
l1 = Label(top,
|
|
text="Non-ASCII found, yet no encoding declared. Add a line like")
|
|
l1.pack(side=TOP, anchor=W)
|
|
l2 = Entry(top, font="courier")
|
|
l2.insert(0, "# -*- coding: %s -*-" % enc)
|
|
# For some reason, the text is not selectable anymore if the
|
|
# widget is disabled.
|
|
# l2['state'] = DISABLED
|
|
l2.pack(side=TOP, anchor = W, fill=X)
|
|
l3 = Label(top, text="to your file\n"
|
|
"Choose OK to save this file as %s\n"
|
|
"Edit your general options to silence this warning" % enc)
|
|
l3.pack(side=TOP, anchor = W)
|
|
|
|
buttons = Frame(top)
|
|
buttons.pack(side=TOP, fill=X)
|
|
# Both return and cancel mean the same thing: do nothing
|
|
self.default = self.cancel = 0
|
|
b1 = Button(buttons, text="Ok", default="active",
|
|
command=self.do_ok)
|
|
b1.pack(side=LEFT, fill=BOTH, expand=1)
|
|
b2 = Button(buttons, text="Edit my file",
|
|
command=self.do_edit)
|
|
b2.pack(side=LEFT, fill=BOTH, expand=1)
|
|
|
|
self._set_transient(master)
|
|
|
|
def do_ok(self):
|
|
self.done(0)
|
|
|
|
def do_edit(self):
|
|
self.done(1)
|
|
|
|
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.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:
|
|
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')
|
|
chars = f.read()
|
|
f.close()
|
|
except IOError, msg:
|
|
tkMessageBox.showerror("I/O Error", str(msg), master=self.text)
|
|
return False
|
|
|
|
chars = self.decode(chars)
|
|
# We now convert all end-of-lines to '\n's
|
|
firsteol = self.eol_re.search(chars)
|
|
if firsteol:
|
|
self.eol_convention = firsteol.group(0)
|
|
if isinstance(self.eol_convention, unicode):
|
|
# Make sure it is an ASCII string
|
|
self.eol_convention = self.eol_convention.encode("ascii")
|
|
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)
|
|
self.text.mark_set("insert", "1.0")
|
|
self.text.see("insert")
|
|
self.updaterecentfileslist(filename)
|
|
return True
|
|
|
|
def decode(self, chars):
|
|
"""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)
|
|
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()
|
|
chars = self.encode(self.text.get("1.0", "end-1c"))
|
|
if self.eol_convention != "\n":
|
|
chars = chars.replace("\n", self.eol_convention)
|
|
try:
|
|
f = open(filename, "wb")
|
|
f.write(chars)
|
|
f.flush()
|
|
f.close()
|
|
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.
|
|
config_encoding = idleConf.GetOption("main","EditorWindow",
|
|
"encoding")
|
|
if config_encoding == 'utf-8':
|
|
# User has requested that we save files as UTF-8
|
|
return BOM_UTF8 + chars.encode("utf-8")
|
|
ask_user = True
|
|
try:
|
|
chars = chars.encode(encoding)
|
|
enc = encoding
|
|
if config_encoding == 'locale':
|
|
ask_user = False
|
|
except UnicodeError:
|
|
chars = BOM_UTF8 + chars.encode("utf-8")
|
|
enc = "utf-8"
|
|
if not ask_user:
|
|
return chars
|
|
dialog = EncodingMessage(self.editwin.top, enc)
|
|
dialog.go()
|
|
if dialog.num == 1:
|
|
# User asked us to edit the file
|
|
encline = "# -*- coding: %s -*-\n" % enc
|
|
firstline = self.text.get("1.0", "2.0")
|
|
if firstline.startswith("#!"):
|
|
# Insert encoding after #! line
|
|
self.text.insert("2.0", encline)
|
|
else:
|
|
self.text.insert("1.0", encline)
|
|
return self.encode(self.text.get("1.0", "end-1c"))
|
|
return chars
|
|
|
|
def fixlastline(self):
|
|
c = self.text.get("end-2c")
|
|
if c != '\n':
|
|
self.text.insert("end-1c", "\n")
|
|
|
|
def print_window(self, event):
|
|
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:
|
|
# XXX KBK 08Jun03 Wouldn't it be better to ask the user to save?
|
|
(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 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)
|
|
filename = self.opendialog.show(initialdir=dir, initialfile=base)
|
|
if isinstance(filename, unicode):
|
|
filename = filename.encode(filesystemencoding)
|
|
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)
|
|
if isinstance(filename, unicode):
|
|
filename = filename.encode(filesystemencoding)
|
|
return filename
|
|
|
|
def updaterecentfileslist(self,filename):
|
|
"Update recent file list on all editor windows"
|
|
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()
|