module S3Rotate::FileUtils

Public Class Methods

date_from_filename(filename, date_regex=/\d{4}-\d{2}-\d{2}/, date_format="%Y-%m-%d") click to toggle source

Parse the date in a filename Date can be any format recognize by Date.parse, or be a timestamp

@param filename String containing the filename to be parsed. @param date_regex Regex returning the date contained in the filename @param date_format Format to be used by DateTime.strptime to parse the extracted date

@return Date instance, representing the parsed date

# File lib/s3_rotate/utils/file_utils.rb, line 17
def FileUtils.date_from_filename(filename, date_regex=/\d{4}-\d{2}-\d{2}/, date_format="%Y-%m-%d")
  # match the date in the filename
  match = filename.match(date_regex)

  if not match
    date_str = nil
  elsif not match.captures
    date_str = match.to_s
  else
    date_str = match.captures.first || match.to_s
  end

  # if nothing could be match, immediately fail
  raise "Invalid date_regex or filename format" if not date_str

  # regular date
  begin
    DateTime.strptime(date_str, date_format).to_date
  rescue
    raise "Invalid date_format"
  end
end
extension_from_filename(filename) click to toggle source

Parse the extension in a filename

@param filename String containing the filename to be parsed

@return String containing the extension of the filename if relevant, None otherwise

# File lib/s3_rotate/utils/file_utils.rb, line 47
def FileUtils.extension_from_filename(filename)
  if filename.include?('.')
    '.' + filename.split('/').last.split('.')[1..-1].join('.')
  end
end
files_in_directory(directory) click to toggle source

Get the list of files in the specified directory

@param directory String containing the path to the directory

@return array of filenames, in ascending date order

# File lib/s3_rotate/utils/file_utils.rb, line 60
def FileUtils.files_in_directory(directory)
  Dir.entries(directory).select { |f| !File.directory? f }.sort
rescue
  raise "Invalid directory #{directory}"
end