Module: YamlHelper

Defined in:
lib/kwalify/util/yaml-helper.rb

Class Method Summary collapse

Class Method Details

.create_hashtable(hashlist, primarykey, flag_duplicate_check = true) ⇒ Object

create a hash table from list of hash with primary key.

ex.

hashlist = [
  { "name"=>"Foo", "gender"=>"M", "age"=>20, },
  { "name"=>"Bar", "gender"=>"F", "age"=>25, },
  { "name"=>"Baz", "gender"=>"M", "age"=>30, },
]
hashtable = YamlHelper.create_hashtable(hashlist, "name")
p hashtable
    # => { "Foo" => { "name"=>"Foo", "gender"=>"M", "age"=>20, },
           "Bar" => { "name"=>"Bar", "gender"=>"F", "age"=>25, },
           "Baz" => { "name"=>"Baz", "gender"=>"M", "age"=>30, }, }



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# File 'lib/kwalify/util/yaml-helper.rb', line 43

def self.create_hashtable(hashlist, primarykey, flag_duplicate_check=true)
   hashtable = {}
   hashlist.each do |hash|
      key = hash[primarykey]
      unless key
         riase "primary key '#{key}' not found."
      end
      if flag_duplicate_check && hashtable.key?(key)
         raise "primary key '#{key}' duplicated (value '#{hashtable[key]}')"
      end
      hashtable[key] = hash
   end if hashlist
   return hashtable
end

.get_value(obj, path) ⇒ Object

get nested value directly.

ex.

val = YamlHelper.get_value(obj, ['aaa', 0, 'xxx'])

This is equal to the following:

begin
  val = obj['aaa'][0]['xxx']
rescue NameError
  val = nil
end



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# File 'lib/kwalify/util/yaml-helper.rb', line 72

def self.get_value(obj, path)
   val = obj
   path.each do |key|
      return nil unless val.is_a?(Hash) || val.is_a?(Array)
      val = val[key]
   end if path
   return val
end

.untabify(input) ⇒ Object

expand tab character to spaces

ex.

untabified_str = YamlHelper.untabify(tabbed_str)
input

String or IO



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# File 'lib/kwalify/util/yaml-helper.rb', line 19

def self.untabify(input)
   s = ''
   input.each_line do |line|
      s << line.gsub(/([^\t]{8})|([^\t]*)\t/n) { [$+].pack("A8") }
   end
   return s
end