Class: CarrierWave::SanitizedFile

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

Overview

SanitizedFile is a base class which provides a common API around all the different quirky Ruby File libraries. It has support for Tempfile, File, StringIO, Merb-style upload Hashes, as well as paths given as Strings and Pathnames.

It's probably needlessly comprehensive and complex. Help is appreciated.

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ SanitizedFile

Returns a new instance of SanitizedFile.


29
30
31
32
# File 'lib/carrierwave/sanitized_file.rb', line 29

def initialize(file)
  self.file = file
  @content = nil
end

Class Attribute Details

.sanitize_regexpObject


24
25
26
# File 'lib/carrierwave/sanitized_file.rb', line 24

def sanitize_regexp
  @sanitize_regexp ||= /[^[:word:]\.\-\+]/
end

Instance Attribute Details

#fileObject

Returns the value of attribute file


19
20
21
# File 'lib/carrierwave/sanitized_file.rb', line 19

def file
  @file
end

Instance Method Details

#basenameObject

Returns the part of the filename before the extension. So if a file is called 'test.jpeg' this would return 'test'

Returns

String

the first part of the filename


71
72
73
# File 'lib/carrierwave/sanitized_file.rb', line 71

def basename
  split_extension(filename)[0] if filename
end

#content_typeObject

Returns the content type of the file.

Returns

String

the content type of the file


262
263
264
265
266
267
# File 'lib/carrierwave/sanitized_file.rb', line 262

def content_type
  @content_type ||=
    existing_content_type ||
    mime_magic_content_type ||
    mini_mime_content_type
end

#content_type=(type) ⇒ Object

Sets the content type of the file.

Returns

String

the content type of the file


276
277
278
# File 'lib/carrierwave/sanitized_file.rb', line 276

def content_type=(type)
  @content_type = type
end

#copy!(new_path) ⇒ Object

Helper to create copy of file in new path.


228
229
230
231
232
233
234
# File 'lib/carrierwave/sanitized_file.rb', line 228

def copy!(new_path)
  if exists?
    FileUtils.cp(path, new_path) unless new_path == path
  else
    File.open(new_path, "wb") { |f| f.write(read) }
  end
end

#copy_to(new_path, permissions = nil, directory_permissions = nil) ⇒ CarrierWave::SanitizedFile

Creates a copy of this file and moves it to the given path. Returns the copy.

Parameters

new_path (String)

The path where the file should be copied to.

permissions (Integer)

permissions to set on the copy

directory_permissions (Integer)

permissions to set on created directories.

Returns

Returns:


215
216
217
218
219
220
221
222
223
# File 'lib/carrierwave/sanitized_file.rb', line 215

def copy_to(new_path, permissions=nil, directory_permissions=nil)
  return if self.empty?
  new_path = File.expand_path(new_path)

  mkdir!(new_path, directory_permissions)
  copy!(new_path)
  chmod!(new_path, permissions)
  self.class.new({:tempfile => new_path, :content_type => content_type})
end

#deleteObject

Removes the file from the filesystem.


239
240
241
# File 'lib/carrierwave/sanitized_file.rb', line 239

def delete
  FileUtils.rm(self.path) if exists?
end

#empty?Boolean

Returns

Boolean

whether the file is valid and has a non-zero size

Returns:

  • (Boolean)

135
136
137
# File 'lib/carrierwave/sanitized_file.rb', line 135

def empty?
  @file.nil? || self.size.nil? || (self.size.zero? && ! self.exists?)
end

#exists?Boolean

Returns

Boolean

Whether the file exists

Returns:

  • (Boolean)

144
145
146
# File 'lib/carrierwave/sanitized_file.rb', line 144

def exists?
  self.path.present? && File.exist?(self.path)
end

#extensionObject

Returns the file extension

Returns

String

the extension


82
83
84
# File 'lib/carrierwave/sanitized_file.rb', line 82

def extension
  split_extension(filename)[1] if filename
end

#filenameObject Also known as: identifier

Returns the filename, sanitized to strip out any evil characters.

Returns

String

the sanitized filename


57
58
59
# File 'lib/carrierwave/sanitized_file.rb', line 57

def filename
  sanitize(original_filename) if original_filename
end

#is_path?Boolean

Returns

Boolean

whether the file is supplied as a pathname or string.

Returns:

  • (Boolean)

126
127
128
# File 'lib/carrierwave/sanitized_file.rb', line 126

def is_path?
  !!((@file.is_a?(String) || @file.is_a?(Pathname)) && !@file.blank?)
end

#move!(new_path) ⇒ Object

Helper to move file to new path.


194
195
196
197
198
199
200
# File 'lib/carrierwave/sanitized_file.rb', line 194

def move!(new_path)
  if exists?
    FileUtils.mv(path, new_path) unless File.identical?(new_path, path)
  else
    File.open(new_path, "wb") { |f| f.write(read) }
  end
end

#move_to(new_path, permissions = nil, directory_permissions = nil, keep_filename = false) ⇒ Object

Moves the file to the given path

Parameters

new_path (String)

The path where the file should be moved.

permissions (Integer)

permissions to set on the file in its new location.

directory_permissions (Integer)

permissions to set on created directories.


177
178
179
180
181
182
183
184
185
186
187
188
189
190
# File 'lib/carrierwave/sanitized_file.rb', line 177

def move_to(new_path, permissions=nil, directory_permissions=nil, keep_filename=false)
  return if self.empty?
  new_path = File.expand_path(new_path)

  mkdir!(new_path, directory_permissions)
  move!(new_path)
  chmod!(new_path, permissions)
  if keep_filename
    self.file = {:tempfile => new_path, :filename => original_filename, :content_type => @content_type}
  else
    self.file = {:tempfile => new_path, :content_type => @content_type}
  end
  self
end

#original_filenameObject

Returns the filename as is, without sanitizing it.

Returns

String

the unsanitized filename


41
42
43
44
45
46
47
48
# File 'lib/carrierwave/sanitized_file.rb', line 41

def original_filename
  return @original_filename if @original_filename
  if @file and @file.respond_to?(:original_filename)
    @file.original_filename
  elsif path
    File.basename(path)
  end
end

#pathObject

Returns the full path to the file. If the file has no path, it will return nil.

Returns

String, nil

the path where the file is located.


112
113
114
115
116
117
118
119
# File 'lib/carrierwave/sanitized_file.rb', line 112

def path
  return if @file.blank?
  if is_path?
    File.expand_path(@file)
  elsif @file.respond_to?(:path) && !@file.path.blank?
    File.expand_path(@file.path)
  end
end

#readObject

Returns the contents of the file.

Returns

String

contents of the file


155
156
157
158
159
160
161
162
163
164
165
166
# File 'lib/carrierwave/sanitized_file.rb', line 155

def read
  if @content
    @content
  elsif is_path?
    File.open(@file, "rb") {|file| file.read}
  else
    @file.try(:rewind)
    @content = @file.read
    @file.try(:close) unless @file.try(:closed?)
    @content
  end
end

#sanitize_regexpObject

Used to sanitize the file name. Public to allow overriding for non-latin characters.

Returns

Regexp

the regexp for sanitizing the file name


287
288
289
# File 'lib/carrierwave/sanitized_file.rb', line 287

def sanitize_regexp
  CarrierWave::SanitizedFile.sanitize_regexp
end

#sizeObject

Returns the file's size.

Returns

Integer

the file's size in bytes.


93
94
95
96
97
98
99
100
101
102
103
# File 'lib/carrierwave/sanitized_file.rb', line 93

def size
  if is_path?
    exists? ? File.size(path) : 0
  elsif @file.respond_to?(:size)
    @file.size
  elsif path
    exists? ? File.size(path) : 0
  else
    0
  end
end

#to_fileObject

Returns a File object, or nil if it does not exist.

Returns

File

a File object representing the SanitizedFile


250
251
252
253
# File 'lib/carrierwave/sanitized_file.rb', line 250

def to_file
  return @file if @file.is_a?(File)
  File.open(path, "rb") if exists?
end