Contents

#!/usr/bin/env ruby

$VERBOSE = true

require 'pathname'
require 'optparse'

require 'watchr'

module Watchr
  # Namespaced to avoid defining global methods
  module Bin #:nodoc:
    extend self

    def usage
      "Usage: watchr [opts] path/to/script"
    end

    def version
      "watchr version: %s" % Watchr::VERSION
    end

    # Find a partial path name in load path
    #
    # ===== Params
    # path<Pathname>:: partial pathname
    #
    # ===== Returns
    # <Pathname>::
    #   absolute path of first occurence of partial path in load path, or nil if not found
    #
    def find_in_load_path(path)
      dir = potentially_with_gem( path.basename('.watchr') ) do
        $LOAD_PATH.detect {|p| Pathname(p).join(path).exist? }
      end
      dir ? path.expand_path(dir) : nil
    end

    private

    # If the block returns nil, requires gem <tt>name</tt> and tries running the
    # block again. If all fails, returns nil
    #
    # ===== Params
    # name<Pathname,String>:: name of gem to require
    #
    # ===== Returns
    # block's value or nil if gem <tt>name</tt> doesn't exist
    #
    def potentially_with_gem(name)
      yield || (require(name) && yield)
    rescue LoadError
      nil
    end
  end
end

opts = OptionParser.new do |opts|
  opts.banner = Watchr::Bin.usage

  opts.on('-d', '--debug', "Print extra debug info while program runs") {
    Watchr.options.debug = true
    begin
      require 'ruby-debug'
    rescue LoadError, RuntimeError
    end
  }

  opts.on_tail('-h', '--help', "Print inline help") { puts opts; exit }
  opts.on_tail('-v', '--version', "Print version" ) { puts Watchr::Bin.version; exit }

  opts.parse! ARGV
end

relative_path = Pathname( ARGV.first )                   rescue abort(Watchr::Bin.usage)
absolute_path = Watchr::Bin.find_in_load_path(relative_path) or abort("no script found; file #{relative_path.to_s.inspect} is not in path.")

Watchr::Controller.new(Watchr::Script.new(absolute_path)).run

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
smparkes-watchr-0.5.7.6	bin/watchr