intervox / clj-progress Goto Github PK

One feature that I think would be nice to have is an indeterminable progress bar. The need for that comes in situations that you don't know the progress total (for example, progressing an HTTP download without content-length provided).

For those cases I imagine a bar that could have a simple animation for indeterminable (for example, three = signs floating in cycle around the bar), like this:

[                ] Downloading 1/?
[=               ] Downloading 2/?
[==              ] Downloading 3/?
[===             ] Downloading 4/?
[ ===            ] Downloading 5/?
[  ===           ] Downloading 6/?
[   ===          ] Downloading 7/? 
...
[             ===] Downloading 32/? 
[=             ==] Downloading 33/? 
[==             =] Downloading 34/? 
[===             ] Downloading 35/? 

I actually spend a little time trying to implement something liked but I got a little lost on the bar and let it go. But I think would be a great feature to have. Even without a full implementation, would be nice to able to support nil or 0 in some way as the progress total.

Right now clj-progress have no support for non-tty clients (e.g. piping console output to .txt file).

But I have no idea how to combine it with customizable progress bar feature without breaking existing API.

Obviously, clj-progress should automatically detect tty and non-tty terminals and decide which version of progress bar to show.

It's not a difficult thing, unless we want to support non-tty progress bar customization.

I can see several possible solutions:

• to use some sane default non-tty progress bar, leaving existing API as it is, and to provide a bunch of new functions and macros to customize non-tty bar;
• to use one pattern for both tty and non-tty progress-bars (but how?);
• to melt new API for non-tty progress bar customization into existing one (but how?).

So, any ideas?