shithub: mc

ref: e09c6b53f3b1928d3752c53c813025dbcbb976e0
dir: /lib/std/dirname.myr/

use "alloc"
use "slcp"
use "die"
use "sldup"
use "strfind"
use "option"
use "types"
use "memops"

pkg std =
	const dirname	: (p : byte[:] -> byte[:])
	const basename	: (p : byte[:] -> byte[:])
;;

extern const put : (fmt : byte[:], args : ... -> size)

const dirname = {p
	var end

	for end = p.len; end > 1; end--
		if p[end-1] != ('/' : byte)
			break
		;;
	;;
	p = p[:end]
	match std.strrfind(p, "/")
	| `std.None:	-> std.sldup(".")
	| `std.Some 0:	-> std.sldup("/")
	| `std.Some i:	-> std.sldup(p[:i])
	;;
}

const basename = {p
	var end

	for end = p.len; end > 1; end--
		if p[end-1] != ('/' : byte)
			break
		;;
	;;
	p = p[:end]
	match std.strrfind(p, "/")
	| `std.None:	-> std.sldup(p[:end])
	| `std.Some i:	-> std.sldup(p[i+1:end])
	;;
}