Darkmode and copy of hex dump to clipboard

[olibu]

This is a pull request to add dark mode and the functionality to copy a part of the hex view to the clipboard.

I tried to keep the changes as small as possible.
However, I had to restructure the HTML page in divs to get a "nice" UI.

[lapo-luchini]

I didn't know about CSS prefers-color-scheme, nice!

[olibu]

I really love your tool and use it on a daily base. If there is any support I can give you, just tell me.
I sometimes need a part of the asn1 structure in hex, so I added this feature, too.
If you want me to remove it I would create a dedicated pull request for the dark mode.

[lapo-luchini]

BTW: I'm importing your single commits in a new branch (I use monotone internally, git is only a mirror, so I can't keep your commits as is), if you don't mind I prefer to keep history as close as possible to development.

So far I'm only importing the "feature/dark", i'll think about the other later. Thanks for the contribution, is really nice!

[lapo-luchini]

Dark mode committed (as is) in 5a007ae. Thanks again!

[olibu]

You're very welcome! Just give me a hint if you need any support.

[lapo-luchini]

Thanks for the offer. I have two "big" features for the future… which I am not finding enough time for as of late, unfortunately:

1. enriching the tree output with parameter names; this is already kinda working from the command line, i.e. most of the work is done, what's lacking is tying it into the DOM output; I was thinking something like a drop-down with some "most used" ASN.1 types from the 3 RFCs I managed to parse so far (X.509, PKCS#7, CRL… a few more maybe) with manual selection… or if it's fast enough, maybe even auto-detection (CLI example already prints a % of recognized nodes using that format, which gies a pretty solid probability it is the right format)
2. a side-by-side diff mode would be really cool e.g. to compare two different certificates from the same CA and notice immediately that the different nodes are only the serial number and subject CN

Example of 1:

Both go pretty deep into asn1.js internals though, and I have doubts about the readability of my code there.

[olibu]

We should close the pull request and have the discussion in the according issues.
I found issue #61 for the diff topic.
If you create an issue for the dump feature we can have the discussion there.

[lapo-luchini]

PS: I'm still interested in the "hex dump" sub-part of this PR, just didn't want to commit together with dark mode.

[olibu]

Sure, happy to get that one, too.
Shall I create a dedicated PR or do add it by your own?

[lapo-luchini]

I'll get it from your feature branch, thanks. :)

[ceztko]

Was the dump functionality missed in action?