Class: PbaCrawler::FileUtilz

Inherits:
Object
  • Object
show all
Defined in:
lib/pba_crawler/file_utilz.rb

Class Method Summary collapse

Class Method Details

.mirror_files(source, destination, create_backups = false) ⇒ Object 



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# File 'lib/pba_crawler/file_utilz.rb', line 16

def self.mirror_files(source, destination, create_backups = false)
  # TODO: use Rake::FileList#pathmap?
  if File.directory?(source)
    source_files  = Dir[source + "/**/*"]
    source_dirs   = source_files.select { |d| File.directory?(d) }
    source_files -= source_dirs
  elsif File.exist? source
    source_dirs   = []
    source_files  = [source]
    source        = File.dirname source
  else
    puts "Could not mirror #{source} - entity does not exist"
    return
  end

  unless source_files.empty?
    base_target_dir = File.join(destination)
    base_target_dir = File.dirname base_target_dir unless File.directory? base_target_dir
    FileUtils.mkdir_p(base_target_dir)
  end

  base_target_dir ||= File.join(destination)

  source_dirs.each do |dir|
    # strip down these paths so we have simple, relative paths we can
    # add to the destination
    target_dir = File.join(base_target_dir, dir.gsub(source, ''))
    begin
      FileUtils.mkdir_p(target_dir)
    rescue Exception => e
      raise "Could not create directory #{target_dir}: \n" + e
    end
  end

  source_files.each do |file|
    begin
      target = File.join(base_target_dir, file.gsub(source, ''))
      unless File.exist?(target) && self.same_contents(file, target)
        # WAS FileUtils.identical?(file, target), but we want to test contents too
        if create_backups && File.exist?(target)
          File.rename(target, target + '~')
        end
        FileUtils.cp(file, target)
      end
    rescue Exception => e
      raise "Could not copy #{file} to #{target}: \n" + e
    end
  end
end

.mirror_with_backup(source, destination) ⇒ Object

added: do mirroring with backup saving turned on



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# File 'lib/pba_crawler/file_utilz.rb', line 12

def self.mirror_with_backup(source, destination)
  self.mirror_files(source, destination, true)
end

.same_contents(source, destination) ⇒ Object

for windows users…



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# File 'lib/pba_crawler/file_utilz.rb', line 67

def self.same_contents(source,destination)
  File.read(source) == File.read(destination)
end