This is cool, except the alignment is wrong in almost all diagrams. Labels are off center, things overlap, etc. If that were fixed, it would be very nice and usable.
You could rasterize the SVG with imagemagick then use aalib to create ascii art from that. However the quality of the result would doubtlessly depend on the nature of the SVG in question.
If you're on a mac, try monodraw. It's discontinued, but it's cheap and works great (it's basically a full featured diagramming app – with text output).
I really liked monodraw but am reluctant to pay for a license now that it's more or less been abandoned. I still like it, but only bought a copy for work at megacorp and foolishly didn't put it in my name.
I'm not sure I understand this attitude. It's a pitty it failed commercially. But it's a great app that only costs a tenner and works well (probably way better than any available alternative). And it can "save" as text, so it's not like you're going to lose all your work.
Surely, a good investment for anyone above minimum wage who does ascii art periodically on a mac?
What makes you think it's abandoned? The author is active on Twitter, the last update for dark mode was in May 2019 and I don't see any show stopper bugs or crashes on Catalina. Small utilities like this don't need an update every month. I bought it a while ago because
1) It's very cheap and a great show case for a small niche Mac app that's both beautiful and works well
2) The two times per year I use it, it's already worth it and fun to play around with.
The last blog entry I saw was that it's been put into maintenance mode. If your interest has fizzled but you still want to keep the product out there, that's a great use case for open source. I'm just not that inclined to pay for something that's not being actively developed.
Obviously at some point last year it got a new feature (yay). That speaks to the app itself being feature incomplete.
https://mbarkhau.keybase.pub/asciigrid/