Sha256: d4775c8aa532dec368383bbdd5842ccca7ddff6d8c80ba76d96347b8d5f16894
Contents?: true
Size: 1.08 KB
Versions: 9
Compression:
Stored size: 1.08 KB
Contents
module Bmg
module Writer
class Csv
include Writer
DEFAULT_OPTIONS = {
}
def initialize(csv_options, output_preferences = nil)
@csv_options = DEFAULT_OPTIONS.merge(csv_options)
@output_preferences = OutputPreferences.dress(output_preferences)
end
attr_reader :csv_options, :output_preferences
def call(relation, string_or_io = nil)
require 'csv'
string_or_io, to_s = string_or_io.nil? ? [StringIO.new, true] : [string_or_io, false]
headers, csv = infer_headers(relation.type), nil
previous = nil
each_tuple(relation) do |tuple,i|
if csv.nil?
headers = infer_headers(tuple) if headers.nil?
csv_opts = csv_options.merge(headers: headers)
csv = CSV.new(string_or_io, **csv_opts)
end
previous, tuple = output_preferences.erase_redundance_in_group(previous, tuple)
csv << headers.map{|h| tuple[h] }
end
to_s ? string_or_io.string : string_or_io
end
end # class Csv
end # module Writer
end # module Bmg
Version data entries
9 entries across 9 versions & 1 rubygems