#!/usr/bin/env ruby
=begin =======================================================================

# TORK-HERALD 1 2014-03-04 19.6.1

## NAME

tork-herald - reports modified files

## SYNOPSIS

`tork-herald` [*OPTION*]...

## DESCRIPTION

This program monitors the current working directory and all those below it
recursively.  When any files therein are modified, it prints their relative
paths in a single-line JSON array to stdout.

## OPTIONS

`-h`, `--help`
  Show this help manual.

## SEE ALSO

tork(1), tork-driver(1)

=end =========================================================================

$0 = File.basename(__FILE__) # for easier identification in ps(1) output

require 'binman'
BinMan.help

require 'json'
STDOUT.sync = true # flush puts() output immediately after writing

require 'listen'
Listen.to! '.', :relative_paths => true do |modified, added, removed|
  files = modified + added
  puts JSON.dump(files) unless files.empty?
end