зеркало из https://github.com/github/ruby.git
106 строки
2.7 KiB
Ruby
106 строки
2.7 KiB
Ruby
# frozen_string_literal: true
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module Bundler
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# A stub yaml serializer that can handle only hashes and strings (as of now).
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module YAMLSerializer
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module_function
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def dump(hash)
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yaml = String.new("---")
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yaml << dump_hash(hash)
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end
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def dump_hash(hash)
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yaml = String.new("\n")
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hash.each do |k, v|
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yaml << k << ":"
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if v.is_a?(Hash)
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yaml << dump_hash(v).gsub(/^(?!$)/, " ") # indent all non-empty lines
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elsif v.is_a?(Array) # Expected to be array of strings
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if v.empty?
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yaml << " []\n"
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else
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yaml << "\n- " << v.map {|s| s.to_s.gsub(/\s+/, " ").inspect }.join("\n- ") << "\n"
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end
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else
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yaml << " " << v.to_s.gsub(/\s+/, " ").inspect << "\n"
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end
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end
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yaml
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end
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ARRAY_REGEX = /
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^
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(?:[ ]*-[ ]) # '- ' before array items
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(['"]?) # optional opening quote
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(.*) # value
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\1 # matching closing quote
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$
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/xo
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HASH_REGEX = /
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^
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([ ]*) # indentations
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(.+) # key
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(?::(?=(?:\s|$))) # : (without the lookahead the #key includes this when : is present in value)
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[ ]?
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(['"]?) # optional opening quote
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(.*) # value
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\3 # matching closing quote
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$
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/xo
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def load(str)
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res = {}
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stack = [res]
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last_hash = nil
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last_empty_key = nil
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str.split(/\r?\n/) do |line|
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if match = HASH_REGEX.match(line)
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indent, key, quote, val = match.captures
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val = strip_comment(val)
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convert_to_backward_compatible_key!(key)
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depth = indent.size / 2
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if quote.empty? && val.empty?
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new_hash = {}
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stack[depth][key] = new_hash
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stack[depth + 1] = new_hash
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last_empty_key = key
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last_hash = stack[depth]
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else
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val = [] if val == "[]" # empty array
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stack[depth][key] = val
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end
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elsif match = ARRAY_REGEX.match(line)
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_, val = match.captures
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val = strip_comment(val)
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last_hash[last_empty_key] = [] unless last_hash[last_empty_key].is_a?(Array)
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last_hash[last_empty_key].push(val)
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end
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end
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res
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end
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def strip_comment(val)
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if val.include?("#") && !val.start_with?("#")
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val.split("#", 2).first.strip
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else
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val
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end
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end
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# for settings' keys
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def convert_to_backward_compatible_key!(key)
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key << "/" if /https?:/i.match?(key) && !%r{/\Z}.match?(key)
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key.gsub!(".", "__")
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end
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class << self
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private :dump_hash, :convert_to_backward_compatible_key!
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end
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end
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end
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