[PATCH v2 6/7] coreutils: Import from packages feed

[Petr Štetiar]

Petr Štetiar <ynezz at true.cz> [2023-01-09 11:50:37]:

Hi,

> BTW ucode has `b64dec()`[1] so perhaps another viable option.
> 
> 1. https://github.com/jow-/ucode#663-b64decstr

wanted to refresh my ucode brain cells, so I've explored feasibility of that
suggestion and it seems to work just fine:

	#!/usr/bin/ucode

	import { stdin, open, error } from 'fs';

	if (length(ARGV) == 0 && stdin.isatty()) {
		warn("usage: b64decode [stdin|path]\n");
		exit(1);
	}

	let fp = stdin;
	let source = ARGV[0];

	if (source) {
		fp = open(source);
		if (!fp) {
			warn(`b64decode: unable to open ${source}: ${error()}\n`);
			exit(1);
		}
	}

	print(b64dec(fp.read("all")));
	fp.close();
	exit(0);

BTW it needs recent ucode with fs.stdin.isatty() support[1].

Thanks Jo for helping me making above script more idiomatic. IMO it looks more
human readable, portable and maintanable then that awk based solution.

1. https://github.com/jow-/ucode/commit/be30472bfdbbb410e8934b48a56d26c5c630d0f1

Cheers,

Petr