Re: Terminal Emulator
On 14May2024 18:44, Gordinator wrote: I wish to write a terminal emulator in Python. I am a fairly competent Python user, and I wish to try a new project idea. What references can I use when writing my terminal emulator? I wish for it to be a true terminal emulator as well, not just a Tk text widget or something like that. Start with the `pty` module. -- https://mail.python.org/mailman/listinfo/python-list
RE: Terminal Emulator
The topic was to re-invent the wheel yet again and create a terminal emulator. I hesitate to say this but one approach is to consider the curses module as described by our very own Alan Gauld in a book: https://www.amazon.com/Programming-curses-Python-Alan-Gauld-ebook/dp/B091B85 B77 The topic is how to make a terminal emulator and as Alan mentions, each kind of terminal may accept various kinds of escape sequences. There are files available the are normally used by curses to get a description of sorts of the capabilities and details of a terminal like a VT100 that curses can use to decide what stream of bytes to send to update a screen. You might be able to use something similar, or better, to see what your terminal emulator should emulate. And, it may even be possible for you to emulate lots of terminals with the same basic code. -Original Message- From: Python-list On Behalf Of Alan Gauld via Python-list Sent: Tuesday, May 14, 2024 3:07 PM To: Gordinator ; python-list@python.org Subject: Re: Terminal Emulator On 14/05/2024 18:44, Gordinator via Python-list wrote: > I wish to write a terminal emulator in Python. I am a fairly competent > Python user, and I wish to try a new project idea. What references can I > use when writing my terminal emulator? I wish for it to be a true > terminal emulator as well, not just a Tk text widget or something like that. The first thing is to decide which terminal. A VT100 is very different from a 3270. And even a VT330 is quite different from a VT100 although sharing a common subset of control codes. And if you start looking at graphical terminals things get even more interesting! The other thing to consider is whether it will be a standalone app or a GUI component. If the latter do you want to expose your own API or clone the manufacturers? Or both?! Or you could make it an object that can be used both in GUIs and in "robotic" or "batch" mode. So many options. Most of the specs are available online and there must be dozens of terminal emulators around written in C so you should have plenty of sample code to study. Good luck! -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: Terminal Emulator
Am 14.05.24 um 19:44 schrieb Gordinator via Python-list:
I wish to write a terminal emulator in Python. I am a fairly
competent Python user, and I wish to try a new project idea. What
references can I use when writing my terminal emulator? I wish for
it to be a true terminal emulator as well, not just a Tk text widget
or something like that.
If you have any advice, please do let me know!
Not sure, what you mean with:
true terminal emulator as well, not just a Tk text widget or something like that
If you want to write a GUI terminal, than that *is* a terminal
emulator and *has* a text widget as its visible core. If you want to
write something like getty which runs on the virtual terminals
(Ctrl+Alt+F*) than that is a terminal (not a terminal emulator).
In both cases, you write something that gets input from the
keyboard, processes it and shows the result. How that processing is
done, depends on the terminal standard, like DEC VT{100, 102, 220,
320, etc}.
For a start, you might want to look at Terminator, which is a
terminal emulator written in Python, Gtk and libvte (which does all
the low level stuff).
--
https://mail.python.org/mailman/listinfo/python-list
Re: Terminal Emulator
On 2024-05-14, Alan Gauld via Python-list wrote: > On 14/05/2024 18:44, Gordinator via Python-list wrote: > >> I wish to write a terminal emulator in Python. I am a fairly >> competent Python user, and I wish to try a new project idea. What >> references can I use when writing my terminal emulator? I wish for >> it to be a true terminal emulator as well, not just a Tk text >> widget or something like that. > > The first thing is to decide which terminal. If you want to make life easier, make it a superset of a terminal that already exists in the terminfo database. Going with some sort of ANSI terminal will probably provide operability even with dumb apps which ignore $TERM and just spit out basic ANSI escape sequences. If you really want to break trail, you could invent your own control sequences, which means you'll have to write terminfo and/or termcap entries as well as the terminal emulator. > A VT100 is very different from a 3270. And even a VT330 is quite > different from a VT100 although sharing a common subset of control > codes. And if you start looking at graphical terminals things get > even more interesting! "Intersting" is putting it mildly... -- https://mail.python.org/mailman/listinfo/python-list
Re: Terminal Emulator
On 2024-05-14, Alan Gauld via Python-list wrote: > On 14/05/2024 18:44, Gordinator via Python-list wrote: > >> I wish to write a terminal emulator in Python. I am a fairly >> competent Python user, and I wish to try a new project idea. What >> references can I use when writing my terminal emulator? I wish for >> it to be a true terminal emulator as well, not just a Tk text >> widget or something like that. > > The first thing is to decide which terminal. You also need to decide if you're going to support real serial ports or just ptys. -- https://mail.python.org/mailman/listinfo/python-list
Re: Terminal Emulator
On 14/05/2024 18:44, Gordinator via Python-list wrote: > I wish to write a terminal emulator in Python. I am a fairly competent > Python user, and I wish to try a new project idea. What references can I > use when writing my terminal emulator? I wish for it to be a true > terminal emulator as well, not just a Tk text widget or something like that. The first thing is to decide which terminal. A VT100 is very different from a 3270. And even a VT330 is quite different from a VT100 although sharing a common subset of control codes. And if you start looking at graphical terminals things get even more interesting! The other thing to consider is whether it will be a standalone app or a GUI component. If the latter do you want to expose your own API or clone the manufacturers? Or both?! Or you could make it an object that can be used both in GUIs and in "robotic" or "batch" mode. So many options. Most of the specs are available online and there must be dozens of terminal emulators around written in C so you should have plenty of sample code to study. Good luck! -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos -- https://mail.python.org/mailman/listinfo/python-list
Terminal Emulator
I wish to write a terminal emulator in Python. I am a fairly competent Python user, and I wish to try a new project idea. What references can I use when writing my terminal emulator? I wish for it to be a true terminal emulator as well, not just a Tk text widget or something like that. If you have any advice, please do let me know! -- https://mail.python.org/mailman/listinfo/python-list
