class ActiveStorage::Filename

A Filename instance is returned by ActiveStorage::Blob#filename, and is comparable so it can be used for sorting.
Encapsulates a string representing a filename to provide convenient access to parts of it and sanitization.

def <=>(other) 

def <=>(other)
  to_s.downcase <=> other.to_s.downcase
end

def as_json(*) 

def as_json(*)
  to_s
end

def base

ActiveStorage::Filename.new(".gitignore").base # => ".gitignore"
ActiveStorage::Filename.new("racecar").base # => "racecar"
ActiveStorage::Filename.new("racecar.jpg").base # => "racecar"

Returns the part of the filename preceding any extension. 
def base
  File.basename @filename, extension_with_delimiter
end

def extension_with_delimiter

ActiveStorage::Filename.new(".gitignore").extension_with_delimiter # => ""
ActiveStorage::Filename.new("racecar").extension_with_delimiter # => ""
ActiveStorage::Filename.new("racecar.jpg").extension_with_delimiter # => ".jpg"

beginning) with the dot that precedes it. If the filename has no extension, an empty string is returned.
Returns the extension of the filename (i.e. the substring following the last dot, excluding a dot at the 
def extension_with_delimiter
  File.extname @filename
end

def extension_without_delimiter

ActiveStorage::Filename.new(".gitignore").extension_without_delimiter # => ""
ActiveStorage::Filename.new("racecar").extension_without_delimiter # => ""
ActiveStorage::Filename.new("racecar.jpg").extension_without_delimiter # => "jpg"

the beginning). If the filename has no extension, an empty string is returned.
Returns the extension of the filename (i.e. the substring following the last dot, excluding a dot at 
def extension_without_delimiter
  extension_with_delimiter.from(1).to_s
end

def initialize(filename) 

def initialize(filename)
  @filename = filename
end

def sanitized

Characters considered unsafe for storage (e.g. \, $, and the RTL override character) are replaced with a dash.

ActiveStorage::Filename.new("foo/bar.jpg").sanitized # => "foo-bar.jpg"
ActiveStorage::Filename.new("foo:bar.jpg").sanitized # => "foo-bar.jpg"

Returns the sanitized filename. 
def sanitized
  @filename.encode(Encoding::UTF_8, invalid: :replace, undef: :replace, replace: "�").strip.tr("\u{202E}%$|:;/\t\r\n\\", "-")
end

def to_json 

def to_json
  to_s
end

def to_s

Returns the sanitized version of the filename. 
def to_s
  sanitized.to_s
end

def wrap(filename)

returned unmodified. If it is a String, it is passed to ActiveStorage::Filename.new.
Returns a Filename instance based on the given filename. If the filename is a Filename, it is 
def wrap(filename)
  filename.kind_of?(self) ? filename : new(filename)
end