Beginnings of util to help find duplicate photos.

.gitignore

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+# vim:
+*.swp
+

dup-finder.rb

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+require 'pp'
+require 'optparse'
+
+$options = {}
+$options[:include] = []
+$options[:file_ext] = ["jpg"]
+OptionParser.new do |opts|
+  opts.banner = "Usage: #{$0} [$options]"
+
+  opts.on("-I", "--include DIRECTORY", "Directory to be scanned (including sub-directories)") do |d|
+    $options[:include] << d
+  end
+  opts.on("-m", "--[no-]match-basename", "Match basename of file") do |m|
+    $options[:match_basename] = m
+  end
+  opts.on("-v", "--[no-]verbose", "Run verbosely") do |v|
+    $options[:verbose] = v
+  end
+  opts.on("-h", "--help", "Help!") do
+    puts opts
+    exit
+  end
+end.parse!
+
+p $options
+p ARGV
+
+
+class PhotoFile
+  @@all = []
+  # Map the names of instance methods on to the options symbols for selecting the use of this instance method for
+  # finding matches:
+  @@method_map = {basename: :match_basename}
+  @@key_methods = @@method_map.keys.select{|k| $options[@@method_map[k]]}
+  @@basename_to_photofile = Hash.new{|h, k| h[k] = []}
+  def self.all
+    @@all
+  end
+  def self.verbose
+    $options[:verbose]
+  end
+  def self.find_all
+    find_crit = $options[:file_ext].map{|e| "-iname '*.#{e}'"}.join(" -o ")
+    $options[:include].each {|d|
+      find_cmd = "find #{d} #{find_crit}"
+      puts find_cmd if verbose
+      `#{find_cmd}`.split(/\n+/).each {|f| PhotoFile.new(f)}
+    }
+  end
+  def self.match_map
+    @@match_map ||= Hash[@@all.map{|p| [p.match_key, p]}]
+  end
+  def match_key
+    @@key_methods.map{|m| self.method(m).call}
+  end
+  def self.basename_to_photofile
+    if @@basename_to_photofile.empty?
+      all.each{|p| @@basename_to_photofile[p.basename] << p}
+    end
+    @@basename_to_photofile
+  end
+  def self.dup_basename_info
+    basename_to_photofile.reject{|k,v| v.size == 1}
+  end
+  attr_reader :name
+  def initialize(name)
+    @name = name
+    @@all << self
+  end
+  def basename
+    File.basename(name, File.extname(name))
+  end
+  def directory
+    File.directory(name)
+  end
+  def stat
+    @stat ||= File::Stat.new(name)
+  end
+  private
+end
+PhotoFile.find_all
+
+PhotoFile.all.each {|p|
+  puts "#{p.name} #{p.stat.size}"
+}
+pp PhotoFile.match_map
+#pp PhotoFile.dup_basename_info