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# -*- 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/vpath'
require_relative 'lib/colorize'
vpath = VPath.new
timestamp = nil
output = nil
ifchange = nil
source = false
color = nil
templates = []
ARGV.options do |o|
o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
o.on('-i', '--input=PATH') {|v| template << v}
o.on('-o', '--output=PATH') {|v| output = v}
o.on('-c', '--[no-]if-change') {|v| ifchange = v}
o.on('-x', '--source') {source = true}
o.on('--color') {color = true}
vpath.def_options(o)
o.order!(ARGV)
templates << (ARGV.shift or abort o.to_s) if templates.empty?
end
color = Colorize.new(color)
unchanged = color.pass("unchanged")
updated = color.fail("updated")
result = templates.map do |template|
if ERB.instance_method(:initialize).parameters.assoc(:key) # Ruby 2.6+
erb = ERB.new(File.read(template), trim_mode: '%-')
else
erb = ERB.new(File.read(template), nil, '%-')
end
erb.filename = template
source ? erb.src : proc{erb.result(binding)}.call
end
result = result.size == 1 ? result[0] : result.join("")
if output
if ifchange and (vpath.open(output, "rb") {|f| f.read} rescue nil) == result
puts "#{output} #{unchanged}"
else
open(output, "wb") {|f| f.print result}
puts "#{output} #{updated}"
end
if timestamp
if timestamp == true
dir, base = File.split(output)
timestamp = File.join(dir, ".time." + base)
end
File.open(timestamp, 'a') {}
File.utime(nil, nil, timestamp)
end
else
print result
end
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