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#!/usr/bin/env ruby
#
# WilloraPDF template renderer
# Charlotte Koch <charlotte@magentastripe.com>
#
require 'erb'
require 'optparse'
input = nil
defines = {}
# Parse command line options.
parser = OptionParser.new do |opts|
opts.on("-i", "--input FILE") { |path| input = File.expand_path(path) }
opts.on("-D", "--define KEY=VALUE") { |arg| d = arg.split("="); defines[d[0]] = d[1]; }
end
parser.parse!(ARGV)
# Validate the command line options.
if not File.file?(input)
$stderr.puts("FATAL: no such file: #{input}")
exit 1
end
defines.each do |k, v|
if v && !k
$stderr.puts("pair is missing a key: #{[k,v].inspect}")
exit 1
end
if k && !v
$stderr.puts("pair is missing a value: #{[k,v].inspect}")
exit 1
end
end
# Set up the variable binding sandbox which will be given to the template.
class OurEnvironment
attr_reader :var
def initialize(data)
@var = data
end
def get_binding
return binding
end
end
our_env = OurEnvironment.new(defines)
# Render the template to standard output.
result = ERB.new(File.read(input)).result(our_env.get_binding)
$stdout.puts(result)
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