# -*- coding: us-ascii -*-

# Used to expand Ruby template files by common.mk, uncommon.mk and

# some Ruby extension libraries.

require 'erb'

require 'optparse'

require_relative 'lib/output'

out = Output.new

source = false

templates = []

ARGV.options do |o|

o.on('-i', '--input=PATH') {|v| templates << v}

o.on('-x', '--source') {source = true}

out.def_options(o)

o.order!(ARGV)

templates << (ARGV.shift or abort o.to_s) if templates.empty?

end

# Used in prelude.c.tmpl and unicode_norm_gen.tmpl

output = out.path

vpath = out.vpath

# A hack to prevent "unused variable" warnings

output, vpath = output, vpath

result = templates.map do |template|

erb = ERB.new(File.read(template), trim_mode: '%-')

erb.filename = template

source ? erb.src : proc{erb.result(binding)}.call

end

result = result.size == 1 ? result[0] : result.join("")

out.write(result)