Class: Linguist::Language
- Inherits:
-
Object
- Object
- Linguist::Language
- Defined in:
- lib/linguist/language.rb
Overview
Language names that are recognizable by GitHub. Defined languages can be highlighted, searched and listed under the Top Languages page.
Languages are defined in ‘lib/linguist/languages.yml`.
Constant Summary collapse
- TYPES =
Valid Languages types
[:data, :markup, :programming]
Instance Attribute Summary collapse
-
#ace_mode ⇒ Object
readonly
Public: Get Ace mode.
-
#aliases ⇒ Object
readonly
Public: Get aliases.
-
#color ⇒ Object
readonly
Public: Get color.
-
#extensions ⇒ Object
readonly
Public: Get extensions.
-
#filenames ⇒ Object
readonly
Public: Get filenames.
-
#lexer ⇒ Object
readonly
Public: Get Lexer.
-
#name ⇒ Object
readonly
Public: Get proper name.
-
#primary_extension ⇒ Object
readonly
Deprecated: Get primary extension.
-
#search_term ⇒ Object
readonly
Deprecated: Get code search term.
-
#type ⇒ Object
readonly
Public: Get type.
Class Method Summary collapse
-
.[](name) ⇒ Object
Public: Look up Language by its name or lexer.
-
.ace_modes ⇒ Object
Public: A List of languages compatible with Ace.
-
.all ⇒ Object
Public: Get all Languages.
-
.colors ⇒ Object
Public: A List of languages with assigned colors.
-
.create(attributes = {}) ⇒ Object
Internal: Create a new Language object.
-
.detect(name, data, mode = nil) ⇒ Object
Public: Detects the Language of the blob.
-
.find_by_alias(name) ⇒ Object
Public: Look up Language by one of its aliases.
-
.find_by_filename(filename) ⇒ Object
Public: Look up Languages by filename.
-
.find_by_name(name) ⇒ Object
Public: Look up Language by its proper name.
-
.popular ⇒ Object
Public: A List of popular languages.
-
.unpopular ⇒ Object
Public: A List of non-popular languages.
Instance Method Summary collapse
- #==(other) ⇒ Object
-
#colorize(text, options = {}) ⇒ Object
Public: Highlight syntax of text.
-
#default_alias_name ⇒ Object
Internal: Get default alias name.
- #eql?(other) ⇒ Boolean
-
#escaped_name ⇒ Object
Public: Get URL escaped name.
-
#group ⇒ Object
Public: Get Language group.
- #hash ⇒ Object
-
#initialize(attributes = {}) ⇒ Language
constructor
Internal: Initialize a new Language.
- #inspect ⇒ Object
-
#popular? ⇒ Boolean
Public: Is it popular?.
-
#searchable? ⇒ Boolean
Public: Is it searchable?.
-
#to_s ⇒ Object
Public: Return name as String representation.
-
#unpopular? ⇒ Boolean
Public: Is it not popular?.
Constructor Details
#initialize(attributes = {}) ⇒ Language
Internal: Initialize a new Language
attributes - A hash of attributes
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# File 'lib/linguist/language.rb', line 203 def initialize(attributes = {}) # @name is required @name = attributes[:name] || raise(ArgumentError, "missing name") # Set type @type = attributes[:type] ? attributes[:type].to_sym : nil if @type && !TYPES.include?(@type) raise ArgumentError, "invalid type: #{@type}" end @color = attributes[:color] # Set aliases @aliases = [default_alias_name] + (attributes[:aliases] || []) # Lookup Lexer object @lexer = Pygments::Lexer.find_by_name(attributes[:lexer] || name) || raise(ArgumentError, "#{@name} is missing lexer") @ace_mode = attributes[:ace_mode] # Set legacy search term @search_term = attributes[:search_term] || default_alias_name # Set extensions or default to []. @extensions = attributes[:extensions] || [] @filenames = attributes[:filenames] || [] unless @primary_extension = attributes[:primary_extension] raise ArgumentError, "#{@name} is missing primary extension" end # Prepend primary extension unless its already included if primary_extension && !extensions.include?(primary_extension) @extensions = [primary_extension] + extensions end # Set popular, and searchable flags @popular = attributes.key?(:popular) ? attributes[:popular] : false @searchable = attributes.key?(:searchable) ? attributes[:searchable] : true # If group name is set, save the name so we can lazy load it later if attributes[:group_name] @group = nil @group_name = attributes[:group_name] # Otherwise we can set it to self now else @group = self end end |
Instance Attribute Details
#ace_mode ⇒ Object (readonly)
Public: Get Ace mode
Examples
# => "text"
# => "javascript"
# => "c_cpp"
Returns a String name or nil
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# File 'lib/linguist/language.rb', line 311 def ace_mode @ace_mode end |
#aliases ⇒ Object (readonly)
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# File 'lib/linguist/language.rb', line 284 def aliases @aliases end |
#color ⇒ Object (readonly)
Public: Get color.
Returns a hex color String.
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# File 'lib/linguist/language.rb', line 274 def color @color end |
#extensions ⇒ Object (readonly)
Public: Get extensions
Examples
# => ['.rb', '.rake', ...]
Returns the extensions Array
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# File 'lib/linguist/language.rb', line 320 def extensions @extensions end |
#filenames ⇒ Object (readonly)
Public: Get filenames
Examples
# => ['Rakefile', ...]
Returns the extensions Array
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# File 'lib/linguist/language.rb', line 343 def filenames @filenames end |
#lexer ⇒ Object (readonly)
Public: Get Lexer
Returns the Lexer
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# File 'lib/linguist/language.rb', line 300 def lexer @lexer end |
#name ⇒ Object (readonly)
Public: Get proper name
Examples
# => "Ruby"
# => "Python"
# => "Perl"
Returns the name String
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# File 'lib/linguist/language.rb', line 264 def name @name end |
#primary_extension ⇒ Object (readonly)
Deprecated: Get primary extension
Defaults to the first extension but can be overriden in the languages.yml.
The primary extension can not be nil. Tests should verify this.
This attribute is only used by app/helpers/gists_helper.rb for creating the language dropdown. It really should be using ‘name` instead. Would like to drop primary extension.
Returns the extension String.
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# File 'lib/linguist/language.rb', line 334 def primary_extension @primary_extension end |
#search_term ⇒ Object (readonly)
Deprecated: Get code search term
Examples
# => "ruby"
# => "python"
# => "perl"
Returns the name String
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# File 'lib/linguist/language.rb', line 295 def search_term @search_term end |
#type ⇒ Object (readonly)
Public: Get type.
Returns a type Symbol or nil.
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# File 'lib/linguist/language.rb', line 269 def type @type end |
Class Method Details
.[](name) ⇒ Object
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# File 'lib/linguist/language.rb', line 158 def self.[](name) @index[name] end |
.ace_modes ⇒ Object
Public: A List of languages compatible with Ace.
Returns an Array of Languages.
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# File 'lib/linguist/language.rb', line 196 def self.ace_modes @ace_modes ||= all.select(&:ace_mode).sort_by { |lang| lang.name.downcase } end |
.all ⇒ Object
Public: Get all Languages
Returns an Array of Languages
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# File 'lib/linguist/language.rb', line 98 def self.all @languages end |
.colors ⇒ Object
Public: A List of languages with assigned colors.
Returns an Array of Languages.
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# File 'lib/linguist/language.rb', line 189 def self.colors @colors ||= all.select(&:color).sort_by { |lang| lang.name.downcase } end |
.create(attributes = {}) ⇒ Object
Internal: Create a new Language object
attributes - A hash of attributes
Returns a Language object
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# File 'lib/linguist/language.rb', line 29 def self.create(attributes = {}) language = new(attributes) @languages << language # All Language names should be unique. Raise if there is a duplicate. if @name_index.key?(language.name) raise ArgumentError, "Duplicate language name: #{language.name}" end # Language name index @index[language.name] = @name_index[language.name] = language language.aliases.each do |name| # All Language aliases should be unique. Raise if there is a duplicate. if @alias_index.key?(name) raise ArgumentError, "Duplicate alias: #{name}" end @index[name] = @alias_index[name] = language end language.extensions.each do |extension| if extension !~ /^\./ raise ArgumentError, "Extension is missing a '.': #{extension.inspect}" end @extension_index[extension] << language end language.filenames.each do |filename| @filename_index[filename] << language end language end |
.detect(name, data, mode = nil) ⇒ Object
Public: Detects the Language of the blob.
name - String filename data - String blob data. A block also maybe passed in for lazy
loading. This behavior is deprecated and you should always
pass in a String.
mode - Optional String mode (defaults to nil)
Returns Language or nil.
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# File 'lib/linguist/language.rb', line 75 def self.detect(name, data, mode = nil) # A bit of an elegant hack. If the file is exectable but extensionless, # append a "magic" extension so it can be classified with other # languages that have shebang scripts. if File.extname(name).empty? && mode && (mode.to_i(8) & 05) == 05 name += ".script!" end possible_languages = find_by_filename(name) if possible_languages.length > 1 data = data.call() if data.respond_to?(:call) if result = Classifier.classify(Samples::DATA, data, possible_languages.map(&:name)).first Language[result[0]] end else possible_languages.first end end |
.find_by_alias(name) ⇒ Object
Public: Look up Language by one of its aliases.
name - A String alias of the Language
Examples
Language.find_by_alias('cpp')
# => #<Language name="C++">
Returns the Lexer or nil if none was found.
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# File 'lib/linguist/language.rb', line 126 def self.find_by_alias(name) @alias_index[name] end |
.find_by_filename(filename) ⇒ Object
Public: Look up Languages by filename.
filename - The path String.
Examples
Language.find_by_filename('foo.rb')
# => [#<Language name="Ruby">]
Returns all matching Languages or [] if none were found.
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# File 'lib/linguist/language.rb', line 140 def self.find_by_filename(filename) basename, extname = File.basename(filename), File.extname(filename) @filename_index[basename] + @extension_index[extname] end |
.find_by_name(name) ⇒ Object
Public: Look up Language by its proper name.
name - The String name of the Language
Examples
Language.find_by_name('Ruby')
# => #<Language name="Ruby">
Returns the Language or nil if none was found.
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# File 'lib/linguist/language.rb', line 112 def self.find_by_name(name) @name_index[name] end |
.popular ⇒ Object
Public: A List of popular languages
Popular languages are sorted to the top of language chooser dropdowns.
This list is configured in “popular.yml”.
Returns an Array of Lexers.
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# File 'lib/linguist/language.rb', line 170 def self.popular @popular ||= all.select(&:popular?).sort_by { |lang| lang.name.downcase } end |
.unpopular ⇒ Object
Public: A List of non-popular languages
Unpopular languages appear below popular ones in language chooser dropdowns.
This list is created from all the languages not listed in “popular.yml”.
Returns an Array of Lexers.
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# File 'lib/linguist/language.rb', line 182 def self.unpopular @unpopular ||= all.select(&:unpopular?).sort_by { |lang| lang.name.downcase } end |
Instance Method Details
#==(other) ⇒ Object
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# File 'lib/linguist/language.rb', line 411 def ==(other) eql?(other) end |
#colorize(text, options = {}) ⇒ Object
Public: Highlight syntax of text
text - String of code to be highlighted options - A Hash of options (defaults to {})
Returns html String
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# File 'lib/linguist/language.rb', line 402 def colorize(text, = {}) lexer.highlight(text, = {}) end |
#default_alias_name ⇒ Object
Internal: Get default alias name
Returns the alias name String
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# File 'lib/linguist/language.rb', line 361 def default_alias_name name.downcase.gsub(/\s/, '-') end |
#eql?(other) ⇒ Boolean
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# File 'lib/linguist/language.rb', line 415 def eql?(other) equal?(other) end |
#escaped_name ⇒ Object
Public: Get URL escaped name.
Examples
"C%23"
"C%2B%2B"
"Common%20Lisp"
Returns the escaped String.
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# File 'lib/linguist/language.rb', line 354 def escaped_name EscapeUtils.escape_url(name).gsub('+', '%20') end |
#group ⇒ Object
Public: Get Language group
Returns a Language
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# File 'lib/linguist/language.rb', line 368 def group @group ||= Language.find_by_name(@group_name) end |
#hash ⇒ Object
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# File 'lib/linguist/language.rb', line 419 def hash name.hash end |
#inspect ⇒ Object
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# File 'lib/linguist/language.rb', line 423 def inspect "#<#{self.class} name=#{name}>" end |
#popular? ⇒ Boolean
Public: Is it popular?
Returns true or false
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# File 'lib/linguist/language.rb', line 375 def popular? @popular end |
#searchable? ⇒ Boolean
Public: Is it searchable?
Unsearchable languages won’t by indexed by solr and won’t show up in the code search dropdown.
Returns true or false
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# File 'lib/linguist/language.rb', line 392 def searchable? @searchable end |
#to_s ⇒ Object
Public: Return name as String representation
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# File 'lib/linguist/language.rb', line 407 def to_s name end |
#unpopular? ⇒ Boolean
Public: Is it not popular?
Returns true or false
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# File 'lib/linguist/language.rb', line 382 def unpopular? !popular? end |