create google map links from exif data in jpg files

maplr.rb

#!/usr/bin/env ruby

def run
  dir =  ARGV[0] || Dir.pwd

  Dir[File.join(dir,'*.jpg')].each do |file|
    gps = gps_for_file file

    if gps
      puts "#### #{File.basename file} -> http://www.google.com/maps/place/#{gps[0]},-#{gps[1]}"
    end
  end
  
end

def gps_for_file file
    gps = `identify -format "%[EXIF:*]" #{file} 2>/dev/null | grep GPS `.split("\n").select{|g| g=~ /(:?Latitude|Longitude)\b/}
    return if gps.empty?

    long = gps.find{|f| f=~ /Longitude/ }
    lat = gps.find{|f| f=~ /Latitude/ }

    get_dms = ->(str){ str.scan(/(\d+)\/(\d+)/).map{|c| c.flatten.each_slice(2).map{|n,d| n.to_f / d.to_f}} }

    coords =  [get_dms.call(lat).flatten, get_dms.call(long).flatten]
    coords.map {|c| c[0] + c[1] / 60.0 + c[2] / 3600.0 }
end


run if $0 == __FILE__