Class: Evilution::LoadPath::SubpathResolver

Inherits:
Object
  • Object
show all
Defined in:
lib/evilution/load_path/subpath_resolver.rb

Overview

Given an absolute (or expandable) file path, returns the shortest path relative to any ‘$LOAD_PATH` entry the file lives under, or nil if the file is outside every entry. The shortest match wins because a deeper LOAD_PATH entry yields a shorter subpath that better matches `require` resolution.

Instance Method Summary collapse

Instance Method Details

#call(file_path) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/evilution/load_path/subpath_resolver.rb', line 10

def call(file_path)
  absolute = File.expand_path(file_path)
  best_subpath = nil

  $LOAD_PATH.each do |entry|
    dir = File.expand_path(entry)
    prefix = dir.end_with?("/") ? dir : "#{dir}/"
    next unless absolute.start_with?(prefix)

    candidate = absolute.delete_prefix(prefix)
    best_subpath = candidate if best_subpath.nil? || candidate.length < best_subpath.length
  end

  best_subpath
end