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dvdantunes/hash_string_to_json.rb

Last active August 14, 2019 16:21
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  1. dvdantunes revised this gist Aug 14, 2019. No changes.
  2. dvdantunes created this gist Aug 14, 2019.
    32 changes: 32 additions & 0 deletions hash_string_to_json.rb
    View file
    Original file line number Diff line number Diff line change
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    # Convert a hash string (a hash that was casted to string using .to_s)
    # to a valid json string
    #
    # @param [String|Hash] hash_string Hash string to parse
    # @param [Boolean] prettyfy_for_html [Optional] True if json is wanted to be prettified for HTML output
    #
    # @return [String]
    def hash_string_to_json(hash_string, prettyfy_for_html = true)
    # Check if it is already a valid JSON
    begin
    if hash_string.is_a? String && JSON.parse(hash_string)
    return hash_string unless prettyfy_for_html

    return JSON.pretty_generate(JSON.parse(hash_string))
    end
    rescue
    end

    # Actually parse it
    begin
    # Hash string keys can have this 2 syntaxes:
    # {:hi=>2} -> uses symbols as key
    # {\"hi\"=>2} -> uses strings as key
    h = JSON.parse(hash_string.gsub(/([\"]?[:]?(\w+)[\"]*\s?=>\s?)/, "\"\\2\": "))
    rescue
    h = hash_string.is_a?(Hash) ? hash_string : Hash.new
    end

    return h.to_json unless prettyfy_for_html

    JSON.pretty_generate(h)
    end