Tree predicates?

[MichaelHatherly]

(I might have completely overlooked it if it's already implemented?)

I'd like to check whether a given path exists in a FileTree, such as

t = FileTree(".")
"my/file.ext" in t

Does anything like this currently exist? Or is there an idiomatic alternative that's reasonably efficient? There's the getindex methods that take globs or regex, but I'm just needing a Bool result given a path.

[shashi]

That's would be a really nice API addition! I agree it's super clunky to do that right now.

[shashi]

an easy way to do this would be:

!isempty(t[glob"my/file.ext"])

[MichaelHatherly]

With a glob it still throws an error if _glob_filter returns nothing:

FileTrees.jl/src/patterns.jl

Lines 5 to 11 in 3a26a5c

	function Base.getindex(t::FileTree, g::GlobMatch)
	sub = _glob_filter(t, name(t), g.pattern...)
	if sub === nothing
	error("$g did not match in tree")
	end
	sub
	end

Should that method be returning an empty tree instead?

A couple of one-liner in methods could be added to bypass that nothing check I guess?

Base.in(g::GlobMatch, t::FileTree) = _glob_filter(t, name(t), g.pattern...) !== nothing
Base.in(p::PathLike, t::FileTree) = GlobMatch(string(p)) in t