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Contents
require 'convert'
class Convert::Columnar < Convert
class << self
# Converts from YAML to Columnar format. This *always* converts to multiple
# files.
def from_yaml_to_columnar(args)
from_yaml(yaml_path(args.source)).
to_columnar(destination: columnar_path(args.destination))
end
private
def columnar_path(path)
path_or_default(path, 'data')
end
end
# Convert the data to multiple text files.
def to_columnar(options = {})
root = options[:destination] or require_destination!
@root = must_be_directory!(root)
@data = @loader.container.sort.map(&:to_h)
column_file('content_type') do |type|
[ type['content-type'], Array(type['extensions']).join(' ') ].
flatten.join(' ').strip
end
required_file('encoding')
optional_file('docs')
bool_file('obsolete')
bool_file('registered')
bool_file('signature')
dict_file('xrefs')
dict_file('friendly')
optional_file('use_instead', 'use-instead')
end
def column_file(name, &block)
File.open(File.join(@root, "mime.#{name}.column"), 'wb') do |f|
f.puts @data.map(&block)
end
end
def bool_file(name, *fields)
fields = [ name ] if fields.empty?
column_file(name) do |type|
fields.map { |field|
type[field] ? 1 : 0
}.join(' ')
end
end
def required_file(name, field = name)
column_file(name) { |type| type[field] }
end
def optional_file(name, field = name)
column_file(name) { |type| opt(type[field]) }
end
def array_file(name, field = name)
column_file(name) { |type| arr(type[field]) }
end
def dict_file(name, field = name)
column_file(name) { |type| dict(type[field]) }
end
def opt(value)
value || '-'
end
def arr(value)
Array(opt(value)).join('|')
end
def dict(value)
if value
value.sort.map { |k, v|
[ k, Array(v).compact.join('^') ].join('^')
}.join('|')
else
'-'
end
end
end
Version data entries
25 entries across 23 versions & 5 rubygems