Class: File

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

Constant Summary collapse

DIR_CHARS = 
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-."

Class Method Summary collapse

Class Method Details

.temp_name(path, suffix = nil, length = 32, count = 0) ⇒ Object

alias :_rename :rename

private :_rename
def rename(from, to)
  raise("cannot move file from #{from} to #{to}: file #{to} already exists.") if File.exist?(to)
  _rename(from,to)
end



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# File 'lib/file_gfdnavi.rb', line 15

def temp_name(path, suffix = nil, length = 32, count = 0)
  path += "/" unless path[-1..-1] == "/"
  #  name = [Digest::MD5.digest(salt)].pack("m").gsub!(/+/,"_").gsub!(/\n/,"").gsub!(/=/,"")
  name = ""
  max = DIR_CHARS.length
  length.times{|i|
    r = rand(max)
    name += DIR_CHARS[r..r]
  }
  name = path + name
  name += suffix if suffix
  if File.exist?(name)
    if count < 10
      return temp_name(path, suffix, length, count+1)
    else
      raise "cannot create temporary path name"
    end
  end
  return name
end