Ubuntu – How to create a diff of a file between it’s current and the latest tagged version in bzr

I did not know if there was anything that did this so I whipped up some code to achieve exactly what you want using my repository here: http://github.com/robertmassaioli/config-files

I have a file that says where all of the files belong and the generate_links program just puts them all there. If you know what you are doing and can compile some Haskell code then it is really simple and easy. Though be warned that it really was made for my own personal use.

You can get the contents of a TextBuffer using get_text():

        start_iter = self.textbuffer.get_start_iter()
        end_iter = self.textbuffer.get_end_iter()
        text = self.textbuffer.get_text(start_iter, end_iter, True)   

And save it like any other text file:

        with open(save_file, 'w') as f:
            f.write(text)

I suggest that you take a look at the TextBuffer api docs. As well as the Python GTK+ 3 Tutorial. It can show you how to use the FileChooserDialog.

Here is a very basic Python Gtk+3 text editor example that can open and save a text file:

#! /bin/python

from gi.repository import Gtk

class TextViewWindow(Gtk.Window):

    def __init__(self):
        Gtk.Window.__init__(self, title="TextView Example")

        self.set_default_size(500, 350)

        self.box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
        self.add(self.box)

        toolbar = Gtk.Toolbar()
        open_btn = Gtk.ToolButton.new_from_stock(Gtk.STOCK_OPEN)
        open_btn.connect("clicked", self.on_open_clicked)
        toolbar.insert(open_btn, 0)
        save_btn = Gtk.ToolButton.new_from_stock(Gtk.STOCK_SAVE)
        save_btn.connect("clicked", self.on_save_clicked)
        toolbar.insert(save_btn, 1)
        self.box.pack_start(toolbar, False, True, 0)

        scrolledwindow = Gtk.ScrolledWindow()
        scrolledwindow.set_hexpand(True)
        scrolledwindow.set_vexpand(True)

        self.textview = Gtk.TextView()
        self.textbuffer = self.textview.get_buffer()
        scrolledwindow.add(self.textview)
        self.box.pack_start(scrolledwindow, True, True, 0)

    def on_open_clicked(self, widget):
        dialog = Gtk.FileChooserDialog("Please choose a file", self,
            Gtk.FileChooserAction.OPEN,
            (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
             Gtk.STOCK_OPEN, Gtk.ResponseType.OK))

        filter_text = Gtk.FileFilter()
        filter_text.set_name("Text files")
        filter_text.add_mime_type("text/plain")
        dialog.add_filter(filter_text)

        response = dialog.run()
        if response == Gtk.ResponseType.OK:
            selected_file = dialog.get_filename()
            with open(selected_file, 'r') as f:
                data = f.read()
                self.textbuffer.set_text(data)
        elif response == Gtk.ResponseType.CANCEL:
            dialog.destroy()

        dialog.destroy()

    def on_save_clicked(self, widget):
        dialog = Gtk.FileChooserDialog("Save file", self,
        Gtk.FileChooserAction.SAVE,
        (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
         Gtk.STOCK_SAVE, Gtk.ResponseType.OK))

        response = dialog.run()
        if response == Gtk.ResponseType.OK:
            save_file = dialog.get_filename()
            start_iter = self.textbuffer.get_start_iter()
            end_iter = self.textbuffer.get_end_iter()
            text = self.textbuffer.get_text(start_iter, end_iter, True)   
            with open(save_file, 'w') as f:
                f.write(text)
        elif response == Gtk.ResponseType.CANCEL:
            dialog.destroy()

        dialog.destroy()

win = TextViewWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()