Class: Yamljam::Concatenator

Inherits:
Object
  • Object
show all
Defined in:
lib/yamljam/concatenator.rb

Instance Method Summary collapse

Instance Method Details

#concatenate(input_files, output_file) ⇒ Object 



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# File 'lib/yamljam/concatenator.rb', line 3

def concatenate(input_files, output_file)
  output_hashmap = merge_files(input_files)
  write_output(output_hashmap, output_file)
end

#jam(input_directory_path = nil, namespace) ⇒ Object 



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# File 'lib/yamljam/concatenator.rb', line 26

def jam(input_directory_path = nil, namespace)
  # input directory will contain #{namespace}.yml (output file, which will be blown away)
  # and a directory called #{namespace}. All files in the #{namespace} directory will be
  # assumed to be yaml input files if they end in .yml or .yaml, and ignored otherwise.
  @namespace = namespace
  input_directory_path ||= Dir.getwd
  input_file_dir = File.join(input_directory_path, namespace)
  Dir.chdir(input_file_dir) do
    input_files = Dir.glob("*.yaml") + Dir.glob("*.yml")
    concatenate(input_files, File.join("..", "#{namespace}.yml"))
  end
end

#make_hashmap(input_file) ⇒ Object 



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# File 'lib/yamljam/concatenator.rb', line 22

def make_hashmap(input_file)
  base_hashmap = YAML::load_file(input_file)
end

#merge_files(input_files) ⇒ Object 



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# File 'lib/yamljam/concatenator.rb', line 18

def merge_files(input_files)
  {@namespace => input_files.map{|input_file| make_hashmap(input_file)}.reduce({}, &:merge)}
end

#write_output(output_hashmap, output_file) ⇒ Object 



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# File 'lib/yamljam/concatenator.rb', line 8

def write_output(output_hashmap, output_file)
  	File.open(output_file, 'w') do |f|
  		f.puts("# Generated by Yamljam. Do not directly edit this file.")
  		f.write(output_hashmap.to_yaml)
		end
  rescue Exception => ex # if it's any solace I cringed when I wrote that
    puts "hit exception when writing output file! #{ex.class} #{ex.message} #{ex.backtrace}"
    raise ex
end