I have gotten to know my way around a few programming languages, and I'd like to try my hand at making a command-line text editor -- something that runs in the terminal, like vim/emacs/nano, but is pure text (no guis, please). Preferably, I'd like to do this in python. Where do I start? Are there any (python) libraries to do command-line applications?
+11
A:
try python curses module , it is a command-line graphic operation library.
linjunhalida
2009-03-27 02:28:44
Kids today! When I was learning to code, we didn't have curses, we had teletypes!
S.Lott
2009-03-27 11:26:00
Back in my young day we had to hand-make circuit boards before we even started ;P
Christian Witts
2009-03-27 11:40:23
+1
A:
Well, what do you mean by a GUI? If you just want to create something that can be used on a console, look into the curses module in the Python standard library, which allows you to simulate a primitive GUI of sorts on a console.
David Zaslavsky
2009-03-27 02:29:11
+5
A:
Curses type libraries and resources will get you into the textual user interfaces, and provide very nice, relatively easy to use windows, menus, editors, etc.
Then you'll want to look into code highlighting modules for python.
It's a fun process dealing with the limitations of textual interfaces, and you can learn a lot by going down this road. Good luck!
Adam Davis
2009-03-27 02:30:29
Thanks -- do you have any good recommendations for said code highlighting modules? I was poking around the pygments documentation, but that didn't look like it was built for real-time syntax highlighting. Can pygments do real-time syntax highlighting, or are there other modules I should check out?
Nate
2009-03-27 02:53:33
+3
A:
I would recommend the excellent urwid toolkit (http://excess.org/article/2009/03/urwid-0984-released) - it's much easier to use than straight curses.
vezult
2009-03-27 02:47:34
+4
A:
Another option if you want to write a TUI (Text User Interface) without having to descend to curses is Snack, which comes with Newt.
Ignacio Vazquez-Abrams
2009-03-27 02:48:04
+1
A:
A not very serious suggestions: a line editor can be implemented without curses.
These things are pretty primitive, of course, and not a lot of fun to work in. But they can be implemented with very little code, and would give you a chance to fool around with various schemes for maintaining the file state in memory pretty quickly.
And they would put you in touch with the programmers of the early seventies (when they had teletypes and the first glass teletypes, but after punched cards were a bit passe...).
dmckee
2009-03-27 03:00:06
A:
Not quite a reference to a Python library, but The Craft of Text Editing by Craig A. Finseth might be of interest you.
sigjuice
2009-03-27 03:59:25
+5
A:
Kids today! Sheesh! When I was starting out, curses was not in widespread use!
My first text editors worked on actual mechanical Teletype devices with actual paper (not a philosophical "TTY" device with a scrolling screen!)
This still works nicely as a way to edit.
Use the cmd module to implement a bunch of commands. Use the 'ex' man page for hints as to what you need. Do not read about the vi commands; avoid reading about vim.
Look at older man pages for just the "EX COMMANDS" section. For example, here: http://www.manpagez.com/man/1/ex/.
Implement the append, add, change, delete, global, insert, join, list, move, print, quit, substitute and write commands and you'll be happy.
S.Lott
2009-03-27 11:20:17
My first interaction with a "computer" was over an acoustically coupled remote TTY. Alas, it was a mainframe at Dad's office, and I was not allowed to do anything interesting with it.
dmckee
2009-03-30 18:57:04
My first TTY's were hard-wired. Probably 110 BAUD. I remember when 300 BAUD was a big deal.
S.Lott
2009-03-30 19:28:30
A:
Another option without curses is Python Slang
Newt is written on top of slang.
Renato Aquino
2009-05-28 01:26:35