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# frozen_string_literal: true
require 'erb'
##
# A subclass of ERB that writes directly to an IO. Credit to Aaron Patterson
# and Masatoshi SEKI.
#
# To use:
#
# erbio = RDoc::ERBIO.new '<%= "hello world" %>', nil, nil
#
# File.open 'hello.txt', 'w' do |io|
# erbio.result binding
# end
#
# Note that binding must enclose the io you wish to output on.
class RDoc::ERBIO < ERB
##
# Defaults +eoutvar+ to 'io', otherwise is identical to ERB's initialize
def initialize(str, trim_mode: nil, eoutvar: 'io')
super(str, trim_mode: trim_mode, eoutvar: eoutvar)
end
##
# Instructs +compiler+ how to write to +io_variable+
def set_eoutvar(compiler, io_variable)
compiler.put_cmd = "#{io_variable}.write"
compiler.insert_cmd = "#{io_variable}.write"
compiler.pre_cmd = []
compiler.post_cmd = []
end
end
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