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# frozen_string_literal: true
require 'mustermann/ast/translator'
module Mustermann
module FileUtils
# AST Translator to turn Mustermann patterns into glob patterns.
# @!visibility private
class GlobPattern < Mustermann::AST::Translator
# Character that need to be escaped in glob patterns.
# @!visibility private
ESCAPE = %w([ ] { } * ** \\)
# Turn a Mustermann pattern into glob pattern.
# @param [#to_glob, #to_ast, Object] pattern the object to turn into a glob pattern.
# @return [String] the glob pattern
# @!visibility private
def self.generate(pattern)
return pattern.to_glob if pattern.respond_to? :to_glob
return new.translate(pattern.to_ast) if pattern.respond_to? :to_ast
return "**/*" unless pattern.is_a? Mustermann::Composite
"{#{pattern.patterns.map { |p| generate(p) }.join(',')}}"
end
translate(:root, :group, :expression) { t(payload) || "" }
translate(:separator, :char) { t.escape(payload) }
translate(:capture) { constraint ? "**/*" : "*" }
translate(:optional) { "{#{t(payload)},}" }
translate(:named_splat, :splat) { "**/*" }
translate(:with_look_ahead) { t(head) + t(payload) }
translate(:union) { "{#{payload.map { |e| t(e) }.join(',')}}" }
translate(Array) { map { |e| t(e) }.join }
# Escape with a slash rather than URI escaping.
# @!visibility private
def escape(char)
ESCAPE.include?(char) ? "\\#{char}" : char
end
end
end
end
Version data entries
17 entries across 17 versions & 2 rubygems