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# frozen_string_literal: true module Bundler # A stub yaml serializer that can handle only hashes and strings (as of now). module YAMLSerializer module_function def dump(hash) yaml = String.new("---") yaml << dump_hash(hash) end def dump_hash(hash) yaml = String.new("\n") hash.each do |k, v| yaml << k << ":" if v.is_a?(Hash) yaml << dump_hash(v).gsub(/^(?!$)/, " ") # indent all non-empty lines elsif v.is_a?(Array) # Expected to be array of strings yaml << "\n- " << v.map {|s| s.to_s.gsub(/\s+/, " ").inspect }.join("\n- ") << "\n" else yaml << " " << v.to_s.gsub(/\s+/, " ").inspect << "\n" end end yaml end ARRAY_REGEX = / ^ (?:[ ]*-[ ]) # '- ' before array items (['"]?) # optional opening quote (.*) # value \1 # matching closing quote $ /xo HASH_REGEX = / ^ ([ ]*) # indentations (.+) # key (?::(?=(?:\s|$))) # : (without the lookahead the #key includes this when : is present in value) [ ]? (?: !\s)? # optional exclamation mark found with ruby 1.9.3 (['"]?) # optional opening quote (.*) # value \3 # matching closing quote $ /xo def load(str) res = {} stack = [res] last_hash = nil last_empty_key = nil str.split(/\r?\n/).each do |line| if match = HASH_REGEX.match(line) indent, key, quote, val = match.captures key = convert_to_backward_compatible_key(key) depth = indent.scan(/ /).length if quote.empty? && val.empty? new_hash = {} stack[depth][key] = new_hash stack[depth + 1] = new_hash last_empty_key = key last_hash = stack[depth] else stack[depth][key] = val end elsif match = ARRAY_REGEX.match(line) _, val = match.captures last_hash[last_empty_key] = [] unless last_hash[last_empty_key].is_a?(Array) last_hash[last_empty_key].push(val) end end res end # for settings' keys def convert_to_backward_compatible_key(key) key = "#{key}/" if key =~ /https?:/i && key !~ %r{/\Z} key = key.gsub(".", "__") if key.include?(".") key end class << self private :dump_hash, :convert_to_backward_compatible_key end end end
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