How to overwrite while doing recursive copy

ruby-talk
1

Hi,

I've been trying to use FileUtils to recursively copy files from 1 dir
to another, but it fails due to permission problems.

FileUtils.cp_r( "C:/source_dir/.", "C:/dest_path", :preserve => true )

If possible I'd like to not delete the contents of the destination
folder and retain permissions of any files I'm not overwriting. Seems
strange to me that FileUtils.cp_r doesn't take the :force option.

Thanks

2

qewrty wrote:

Hi,

I've been trying to use FileUtils to recursively copy files from 1 dir
to another, but it fails due to permission problems.

FileUtils.cp_r( "C:/source_dir/.", "C:/dest_path", :preserve => true )

If possible I'd like to not delete the contents of the destination
folder and retain permissions of any files I'm not overwriting. Seems
strange to me that FileUtils.cp_r doesn't take the :force option.

Thanks

Have you try this:

FileUtils.cp_r( "C:/source_dir", "C:/dest_path", :preserve => true )

If you want you can use the following code and save it as "dtools.rb'

#############################Start dtools.rb#############################

require 'ftools'

class String
  def str_replace(what,with)
    re = Regexp.new(Regexp.quote(what))
    self.gsub(re,with)
  end def str_ireplace(what,with)
    re = Regexp.new(Regexp.quote(what), Regexp::IGNORECASE)
    self.gsub(re,with)
  end
end

ยทยทยท

#----------------------------------------------------------------
module DTools

def DTools.empty?(path=nil) if Dir.entries(path).length >= 3
      false
   else
      true
   end end

def DTools._delete_all(path=nil)
  if File.basename(path) != '.' and File.basename(path) != '..' and path.to_s != @path.to_s
    if FileTest.directory?(path) != true
      File.safe_unlink(path)
    else
      if self.empty?(path) == true
        Dir.delete(path)
      else
        Dir.foreach(path){|file|
          self._delete_all(path+'/'+file)
        }
      end end end end

def DTools.delete(path=nil) @path = File.expand_path(path)
  self._delete_all(@path)
  Dir.delete(@path)
end

def DTools.copy(from_path=nil,to_path=nil)
    if FileTest.directory?(to_path) == false
      File.makedirs(to_path)
    end
    Find.find(from_path) do |f|
      to = f.str_replace(from_path,'')
      unless to == ''
        to = to_path+to
        if FileTest.directory?(f) == true
          if FileTest.directory?(to) == false
            File.makedirs(to)
          end
        else
          File.install(f,to)
        end end
    end
end

end
#-----------------------------------------------------------
class << Dir
  def delete_all(path=nil)
    DTools.delete(path)
  end
    def empty?(path=nil)
    DTools.empty?(path)
  end
  def copy(from=nil,to=nil)
    DTools.copy(from,to)
  end
end

##################################End dtools.rb##########################

Than you can do some thing like this

require 'dtools'
Dir.copy("C:/source_dir", "C:/dest_path")
Dir.delete_all('C:/temp')
If Dir.empty?('C:/abcd')
  puts 'Directory C:/abcd is empty'
end

I always use 'dtools' on my code, never have any problem.

3

Thanks! I've added some small modifications so that it can overwrite
existing files, but it's pretty much what I need. Quite odd that it's
neither part of standard lib nor is a similar tool available in RAA.