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generic_erb.rb
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generic_erb.rb
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# -*- coding: us-ascii -*-
require 'erb'
require 'optparse'
require 'fileutils'
$:.unshift(File.dirname(__FILE__))
require 'vpath'
vpath = VPath.new
timestamp = nil
output = nil
ifchange = nil
source = false
color = nil
opt = OptionParser.new do |o|
o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
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)
end
unchanged = "unchanged"
updated = "updated"
if color or (color == nil && STDOUT.tty?)
if (/\A\e\[.*m\z/ =~ IO.popen("tput smso", "r", err: IO::NULL, &:read) rescue nil)
beg = "\e["
colors = (colors = ENV['TEST_COLORS']) ? Hash[colors.scan(/(\w+)=([^:\n]*)/)] : {}
reset = "#{beg}m"
unchanged = "#{beg}#{colors["pass"] || "32;1"}m#{unchanged}#{reset}"
updated = "#{beg}#{colors["fail"] || "31;1"}m#{updated}#{reset}"
end
end
template = ARGV.shift or abort opt.to_s
erb = ERB.new(File.read(template), nil, '%-')
erb.filename = template
result = source ? erb.src : erb.result
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
FileUtils.touch(timestamp)
end
else
print result
end