module FileUtils

Add some class methods to the FileUtils class to make some routine directory/file tests and management a bit easier.

Public Class Methods

dir_absolute?(dir) click to toggle source

Return true if the given directory name is absolute.

# File buryspam.rb, line 435
def dir_absolute?(dir)
  dir[0] == //
end

ensure_dir_exists(dir) click to toggle source

Create the given directory if it doesn't already exist.

# File buryspam.rb, line 429
def ensure_dir_exists(dir)
  return if File.directory?(dir)
  mkdir_p(dir)
end

free_space?() click to toggle source

Return true if there is sufficient disk space available in your home directory, according to the min_disk_free configuration parameter setting

# File buryspam.rb, line 458
def free_space?
  return %x{/bin/df -Pk #{ENV['HOME']}}.
    split(/\n/).
    pop.split[3].
    to_i * 1024 > Buryspam::Config.min_disk_free
end

rename_file_uniq(old_filename, new_filename) click to toggle source

Rename the file to the proposed new name. Ensure new file name is unique by appending a four digit sequence number, if necessary. Assumes old_filename and directory of new_filename both exist.

# File buryspam.rb, line 442
def rename_file_uniq(old_filename, new_filename)
  Logger.debug("Renaming file '#{old_filename}' to '#{new_filename}'")
  seq = 1
  while File.exist?(new_filename)
    Logger.info("'#{new_filename}' already exists.")
    ext = ".%04d" % seq
    new_filename.gsub!(/\.\d+$/, ext) || new_filename <<  ext
    seq += 1
  end
  File.rename(old_filename, new_filename)
  Logger.info("'#{old_filename}' renamed to '#{new_filename}'")
end