Module: TTYCoke::Import

Extended by:
Import
Included in:
Import
Defined in:
lib/ttycoke/import.rb

Instance Method Summary collapse

Instance Method Details

#import(result, paths, origins = {}, importer = $0) ⇒ Object 



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# File 'lib/ttycoke/import.rb', line 5

def import result, paths, origins={}, importer=$0
  Array(paths).each do |path|
    begin
      data = YAML.load_file(importer + path)
    rescue => error
      error.message << ' when importing %s into %s' %
        [path, importer].map(&:inspect)
      raise error
    end
    mark_origin data, path, origins
    merge result, data, path, origins
  end
  result
end

#merge(dst_hash, src_hash, src_file, origins = {}, backtrace = []) ⇒ Object 



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# File 'lib/ttycoke/import.rb', line 20

def merge dst_hash, src_hash, src_file, origins={}, backtrace=[]
  src_hash.each do |key, src_val|
    backtrace.push key

    catch :merged do
      if dst_hash.key? key
        dst_val = dst_hash[key]

        dst_file = origins[dst_val]
        section = backtrace.join(':')

        if src_val.nil?
          LOG.warn 'empty section %s in %s removes value %s from %s' %
            [section, src_file, dst_val, dst_file].map(&:inspect)

          dst_hash.delete key
          throw :merged

        elsif dst_val.is_a? Hash and src_val.is_a? Hash
          merge dst_val, src_val, src_file, origins, backtrace
          throw :merged

        elsif dst_val.is_a? Array
          dst_val.concat Array(src_val)
          throw :merged

        else
          LOG.warn 'value %s from %s overrides %s from %s in section %s' %
            [src_val, src_file, dst_val, dst_file, section].map(&:inspect)
          # fall through
        end
      end
      dst_hash[key] = src_val
    end
    backtrace.pop
  end
  dst_hash
end