Class: Sprockets::Base

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses: CachedEnvironment, Environment
Super Chains via Extension / Inclusion / Inheritance
Instance Chain: self, `Npm`, `Bower`, `Loader`, `Resolve`, `Server`, `Configuration`, `Paths`, `Mime`, `Transformers`, `HTTPUtils`, `Processing`, `ProcessorUtils`, `Exporting`, `Compressing`, `Dependencies`, `Utils`, `PathDependencyUtils`, `URIUtils`, `PathDigestUtils`, `PathUtils`, `DigestUtils`, `SourceMapUtils`
Inherits:	Object
Defined in:	lib/sprockets/base.rb

Overview

Base class for Environment and CachedEnvironment.

Constant Summary

Instance Attribute Summary

#cache rw

Get persistent cache store.
#cache=(cache) rw

Set persistent cache store.

`Configuration` - Included

#config, #config=,
#context_class	This class maybe mutated and mixed in with custom helpers.
#digest_class	Public: Returns a `Digest` implementation class.
#digest_class=	Deprecated: Assign a `Digest` implementation class.
#logger	Get and set `Logger` instance.
#version	The `Environment#version` is a custom value used for manually expiring all asset caches.
#version=	Assign an environment version.

`Paths` - Included

#root	Returns `Environment` root.
#root=	Internal: Change Environment root.

`Exporting` - Included

#export_concurrent	Public: Checks if concurrent exporting is allowed.
#export_concurrent=	Public: Enable or disable the concurrently exporting files.

`Compressing` - Included

#css_compressor	Return CSS compressor or nil if none is set.
#css_compressor=	Assign a compressor to run on `text/css` assets.
#gzip=	Public: Enable or disable the creation of Gzip files.
#gzip?	Public: Checks if Gzip is enabled.
#js_compressor	Return JS compressor or nil if none is set.
#js_compressor=	Assign a compressor to run on `application/javascript` assets.
#skip_gzip?	Public: Checks if Gzip is disabled.

Instance Method Summary

#[](*args, **options)

Preferred #find_asset shorthand.
#cached (also: #index)

Return an CachedEnvironment.
#compress_from_root(uri)
#expand_from_root(uri)
#file_digest(path)

Internal: Compute digest for path.
#find_all_linked_assets(*args) {|asset| ... }
#find_asset(*args, **options)

Find asset by logical path or expanded path.
#find_asset!(*args)

Find asset by logical path or expanded path.
#index

Alias for #cached.
#inspect

Pretty inspect.

`Npm` - Included

#read_package_directives	Internal: Read package.json’s main and style directives.
#resolve_alternates	Internal: Override resolve_alternates to install package.json behavior.

`Bower` - Included

#read_bower_main	Internal: Read bower.json’s main directive.
#resolve_alternates	Internal: Override resolve_alternates to install bower.json behavior.

`Loader` - Included

#load	Public: Load Asset by `Asset` URI.
#asset_from_cache	Internal: Load asset hash from cache.
#compress_key_from_hash, #expand_key_from_hash,
#fetch_asset_from_dependency_cache	Internal: Retrieves an asset based on its digest.
#load_from_unloaded	Internal: Loads an asset and saves it to cache.
#resolve_dependencies	Internal: `Resolve` set of dependency URIs.
#store_asset	Internal: Save a given asset to the cache.

`Resolve` - Included

#resolve	Public: Find Asset URI for given a logical path by searching the environment’s load paths.
#resolve!	Public: Same as resolve() but raises a `FileNotFound` exception instead of nil if no assets are found.

`Server` - Included

#call	`call` implements the Rack 1.x specification which accepts an `env` Hash and returns a three item tuple with the status code, headers, and body.
#bad_request_response	Returns a 400 Forbidden response tuple.
#cache_headers,
#css_exception_response	Returns a CSS response that hides all elements on the page and displays the exception.
#escape_css_content	Escape special characters for use inside a CSS content(“…”) string.
#forbidden_request?,
#forbidden_response	Returns a 403 Forbidden response tuple.
#head_request?, #headers,
#javascript_exception_response	Returns a JavaScript response that re-throws a Ruby exception in the browser.
#method_not_allowed_response,
#not_found_response	Returns a 404 Not Found response tuple.
#not_modified_response	Returns a 304 Not Modified response tuple.
#ok_response	Returns a 200 OK response tuple.
#path_fingerprint	Gets ETag fingerprint.
#precondition_failed_response

`Configuration` - Included

#initialize_configuration

`Paths` - Included

#append_path	Append a `path` to the `paths` list.
#clear_paths	Clear all paths and start fresh.
#each_file	Public: Iterate over every file under all load paths.
#paths	Returns an `Array` of path `String`s.
#prepend_path	Prepend a `path` to the `paths` list.

`Mime` - Included

#mime_exts	Internal: Mapping of MIME extension Strings to MIME type Strings.
#mime_type_charset_detecter	Internal: Get detecter function for MIME type.
#mime_types	Public: Mapping of MIME type Strings to properties Hash.
#read_file	Public: Read file on disk with MIME type specific encoding.
#register_mime_type	Public: Register a new mime type.

`Transformers` - Included

#compose_transformers	Internal: Compose multiple transformer steps into a single processor function.
#expand_transform_accepts	Internal: Expand accept type list to include possible transformed types.
#register_transformer	Public: Register a transformer from and to a mime type.
#register_transformer_suffix	Internal: Register transformer for existing type adding a suffix.
#resolve_transform_type	Internal: `Resolve` target mime type that the source type should be transformed to.
#transformers	Public: Two level mapping of a source mime type to a target mime type.
#compose_transformer_list, #compute_transformers!

`HTTPUtils` - Included

#find_best_mime_type_match	Internal: Find the best qvalue match from an Array of available mime type options.
#find_best_q_match	Internal: Find the best qvalue match from an Array of available options.
#find_mime_type_matches	Internal: Find the all qvalue match from an Array of available mime type options.
#find_q_matches	Internal: Find all qvalue matches from an Array of available options.
#match_mime_type?	Public: Test mime type against mime range.
#match_mime_type_keys	Public: Return values from Hash where the key matches the mime type.
#parse_q_values	Internal: Parse Accept header quality values.

`Processing` - Included

#bundle_processors	`Bundle` Processors are ran on concatenated assets rather than individual files.
#pipelines,
#postprocessors	Postprocessors are ran after `Preprocessors` and Engine processors.
#preprocessors	`Preprocessors` are ran before Postprocessors and Engine processors.
#processors	Alias for Processing#preprocessors.
#register_bundle_metadata_reducer	Public: Register bundle metadata reducer function.
#register_bundle_processor	Registers a new `Bundle` Processor `klass` for `mime_type`.
#register_pipeline	Registers a pipeline that will be called by `call_processor` method.
#register_postprocessor	Registers a new Postprocessor `klass` for `mime_type`.
#register_preprocessor	Registers a new Preprocessor `klass` for `mime_type`.
#register_processor	Alias for Processing#register_preprocessor.
#unregister_bundle_processor	Remove Bundle Processor `klass` for `mime_type`.
#unregister_postprocessor	Remove Postprocessor `klass` for `mime_type`.
#unregister_preprocessor	Remove Preprocessor `klass` for `mime_type`.
#unregister_processor	Alias for Processing#unregister_preprocessor.
#register_config_processor, #unregister_config_processor

`ProcessorUtils` - Included

#call_processor	Public: Invoke processor.
#call_processors	Public: Invoke list of processors in right to left order.
#compose_processors	Public: Compose processors in right to left order.
#processor_cache_key	Internal: Get processor defined cached key.
#processors_cache_keys	Internal: Get combined cache keys for set of processors.
#validate_processor_result!	Internal: Validate returned result of calling a processor pipeline and raise a friendly user error message.

`Exporting` - Included

#exporters	`Exporters` are ran on the assets:precompile task.
#register_exporter	Public: Registers a new Exporter `klass` for `mime_type`.
#unregister_exporter	Public: Remove Exporting processor `klass` for `mime_type`.

`Compressing` - Included

#compressors,
#register_compressor	Public: Register a new compressor `klass` at `sym` for `mime_type`.

`Dependencies` - Included

#add_dependency	Public: Add environmental dependency inherited by all assets.
#depend_on	Alias for Dependencies#add_dependency.
#dependencies	Public: Default set of dependency URIs for assets.
#dependency_resolvers	Public: Mapping dependency schemes to resolver functions.
#register_dependency_resolver	Public: Register new dependency URI resolver.
#resolve_dependency	Internal: `Resolve` dependency URIs.

`Utils` - Included

#concat_javascript_sources	Internal: Accumulate asset source to buffer and append a trailing semicolon if necessary.
#dfs	Internal: Post-order Depth-First search algorithm.
#dfs_paths	Internal: Post-order Depth-First search algorithm that gathers all paths along the way.
#duplicable?	Internal: Check if object can safely be .dup’d.
#hash_reassoc	Internal: Duplicate and store key/value on new frozen hash.
#hash_reassoc1	Internal: Duplicate and store key/value on new frozen hash.
#module_include	Internal: Inject into target module for the duration of the block.
#string_end_with_semicolon?	Internal: Check if string has a trailing semicolon.

`PathDependencyUtils` - Included

#entries_with_dependencies	Internal: List directory entries and return a set of dependencies that would invalid the cached return result.
#stat_directory_with_dependencies	Internal: List directory filenames and associated Stats under a directory.
#stat_sorted_tree_with_dependencies	Internal: List directory filenames and associated Stats under an entire directory tree.

`URIUtils` - Included

#build_asset_uri	Internal: Build Asset URI.
#build_file_digest_uri	Internal: Build file-digest dependency URI.
#encode_uri_query_params	Internal: Serialize hash of params into query string.
#join_file_uri	Internal: Join file: URI component parts into String.
#join_uri	Internal: Join URI component parts into String.
#parse_asset_uri	Internal: Parse Asset URI.
#parse_file_digest_uri	Internal: Parse file-digest dependency URI.
#parse_uri_query_params	Internal: Parse query string into hash of params.
#split_file_uri	Internal: Parse file: URI into component parts.
#split_uri	Internal: Parse URI into component parts.
#valid_asset_uri?	Internal: Check if String is a valid `Asset` URI.

`PathDigestUtils` - Included

#file_digest	Internal: Compute digest for path.
#files_digest	Internal: Compute digest for a set of paths.
#stat_digest	Internal: Compute digest for file stat.

`PathUtils` - Included

#absolute_path?	On Windows, ALT_SEPARATOR is \ Delegate to Pathname since the logic gets complex.
#atomic_write	Public: Write to a file atomically.
#directory?	Public: Like `File.directory?`.
#entries	Public: A version of `Dir.entries` that filters out `.` files and `~` swap files.
#file?	Public: Like `File.file?`.
#find_matching_path_for_extensions	Internal: Match paths in a directory against available extensions.
#find_upwards	Internal: Find target basename checking upwards from path.
#join	Public: Joins path to base path.
#match_path_extname	Internal: Match path extnames against available extensions.
#path_extnames	Internal: Get path’s extensions.
#path_parents	Internal: Returns all parents for path.
#paths_split	Internal: Detect root path and base for file in a set of paths.
#relative_path?	Public: Check if path is explicitly relative.
#relative_path_from	Public: Get relative path from `start` to `dest`.
#set_pipeline	Public: Sets pipeline for path.
#split_subpath	Internal: Get relative path for root path and subpath.
#stat	Public: Like `File.stat`.
#stat_directory	Public: Stat all the files under a directory.
#stat_sorted_tree	Public: Recursive stat all the files under a directory in alphabetical order.
#stat_tree	Public: Recursive stat all the files under a directory.

`DigestUtils` - Included

#already_digested?	Internal: Checks an asset name for a valid digest.
#detect_digest_class	Internal: Detect digest class hash algorithm for digest bytes.
#digest	Internal: Generate a hexdigest for a nested JSON serializable object.
#digest_class	Internal: Default digest class.
#hexdigest	Internal: Generate a hexdigest for a nested JSON serializable object.
#hexdigest_integrity_uri	Public: Generate hash for use in the `integrity` attribute of an asset tag as per the subresource integrity specification.
#integrity_uri	Public: Generate hash for use in the `integrity` attribute of an asset tag as per the subresource integrity specification.
#pack_base64digest	Internal: Pack a binary digest to a base64 encoded string.
#pack_hexdigest	Internal: Pack a binary digest to a hex encoded string.
#pack_urlsafe_base64digest	Internal: Pack a binary digest to a urlsafe base64 encoded string.
#unpack_hexdigest	Internal: Unpack a hex encoded digest string into binary bytes.
#build_digest

`SourceMapUtils` - Included

#bsearch_mappings	Public: Search Array of mappings for closest offset.
#combine_source_maps	Public: Combine two separate source map transformations into a single mapping.
#compare_source_offsets	Public: Compare two source map offsets.
#concat_source_maps	Public: Concatenate two source maps.
#decode_source_map	Public: Decompress source map.
#decode_vlq_mappings	Public: Decode VLQ mappings and match up sources and symbol names.
#encode_source_map	Public: Compress source map.
#encode_vlq_mappings	Public: Encode mappings Hash into a VLQ encoded String.
#format_source_map	Public: Transpose source maps into a standard format.
#make_index_map	Public: Converts source map to index map.
#vlq_decode	Public: Decode a VLQ string.
#vlq_decode_mappings	Public: Decode a VLQ string into mapping numbers.
#vlq_encode	Public: Encode a list of numbers into a compact VLQ string.
#vlq_encode_mappings	Public: Encode a mapping array into a compact VLQ string.

Instance Attribute Details

#cache (rw)

Get persistent cache store

[ GitHub ]

# File 'lib/sprockets/base.rb', line 41


attr_reader :cache

#cache=(cache) (rw)

Set persistent cache store

The cache store must implement a pair of getters and setters. Either ‘get(key)`/`set(key, value)`, `[key]`/`=value`, `read(key)`/`write(key, value)`.

[ GitHub ]

# File 'lib/sprockets/base.rb', line 48


def cache=(cache)
  @cache = Cache.new(cache, logger)
end

Instance Method Details

#[](*args, **options)

Preferred #find_asset shorthand.

environment['application.js']

[ GitHub ]

# File 'lib/sprockets/base.rb', line 118


def [](*args, **options)
  find_asset(*args, **options)
end

#cached Also known as: #index

Return an CachedEnvironment. Must be implemented by the subclass.

Raises:

(NotImplementedError)

[ GitHub ]

# File 'lib/sprockets/base.rb', line 53


def cached
  raise NotImplementedError
end

#compress_from_root(uri)

[ GitHub ]

# File 'lib/sprockets/base.rb', line 139


def compress_from_root(uri)
  URITar.new(uri, self).compress
end

#expand_from_root(uri)

[ GitHub ]

# File 'lib/sprockets/base.rb', line 143


def expand_from_root(uri)
  URITar.new(uri, self).expand
end

#file_digest(path)

Internal: Compute digest for path.

path - String filename or directory path.

Returns a String digest or nil.

[ GitHub ]

# File 'lib/sprockets/base.rb', line 63


def file_digest(path)
  if stat = self.stat(path)
    # Caveat: Digests are cached by the path's current mtime. Its possible
    # for a files contents to have changed and its mtime to have been
    # negligently reset thus appearing as if the file hasn't changed on
    # disk. Also, the mtime is only read to the nearest second. It's
    # also possible the file was updated more than once in a given second.
    key = UnloadedAsset.new(path, self).file_digest_key(stat.mtime.to_i)
    cache.fetch(key) do
      self.stat_digest(path, stat)
    end
  end
end

#find_all_linked_assets(*args) {|asset| ... }

Yields:

(asset)

[ GitHub ]

# File 'lib/sprockets/base.rb', line 85


def find_all_linked_assets(*args)
  return to_enum(__method__, *args) unless block_given?

  parent_asset = asset = find_asset(*args)
  return unless asset

  yield asset
  stack = asset.links.to_a
  linked_paths = {}

  while uri = stack.shift
    yield asset = load(uri)

    last_filename = linked_paths[asset.logical_path]
    if last_filename && last_filename != asset.filename
      raise DoubleLinkError.new(
        parent_filename: parent_asset.filename,
        last_filename:   last_filename,
        logical_path:    asset.logical_path,
        filename:        asset.filename
      )
    end
    linked_paths[asset.logical_path] = asset.filename
    stack = asset.links.to_a + stack
  end

  nil
end

#find_asset(*args, **options)

Find asset by logical path or expanded path.

[ GitHub ]

# File 'lib/sprockets/base.rb', line 78


def find_asset(*args, **options)
  uri, _ = resolve(*args, **options)
  if uri
    load(uri)
  end
end

#find_asset!(*args)

Find asset by logical path or expanded path.

If the asset is not found an error will be raised.

[ GitHub ]

# File 'lib/sprockets/base.rb', line 125


def find_asset!(*args)
  uri, _ = resolve!(*args)
  if uri
    load(uri)
  end
end

#index

Alias for #cached.

[ GitHub ]

# File 'lib/sprockets/base.rb', line 56


alias_method :index, :cached

#inspect

Pretty inspect

[ GitHub ]

# File 'lib/sprockets/base.rb', line 133


def inspect
  "#<#{self.class}:0x#{object_id.to_s(16)} " +
    "root=#{root.to_s.inspect}, " +
    "paths=#{paths.inspect}>"
end

Class: Sprockets::Base

Overview

Constant Summary

SourceMapUtils - Included

DigestUtils - Included

PathUtils - Included

Utils - Included

ProcessorUtils - Included

Server - Included

Bower - Included

Instance Attribute Summary

Configuration - Included

Paths - Included

Exporting - Included

Compressing - Included

Instance Method Summary

Npm - Included

Bower - Included

Loader - Included

Resolve - Included

Server - Included

Configuration - Included

Paths - Included

Mime - Included

Transformers - Included

HTTPUtils - Included

Processing - Included

ProcessorUtils - Included

Exporting - Included

Compressing - Included

Dependencies - Included

Utils - Included

PathDependencyUtils - Included

URIUtils - Included

PathDigestUtils - Included

PathUtils - Included

DigestUtils - Included

SourceMapUtils - Included

Instance Attribute Details

#cache (rw)

#cache=(cache) (rw)

Instance Method Details

#[](*args, **options)

#cached Also known as: #index

#compress_from_root(uri)

#expand_from_root(uri)

#file_digest(path)

#find_all_linked_assets(*args) {|asset| ... }

#find_asset(*args, **options)

#find_asset!(*args)

#index

#inspect

`SourceMapUtils` - Included

`DigestUtils` - Included

`PathUtils` - Included

`Utils` - Included

`ProcessorUtils` - Included

`Server` - Included

`Bower` - Included

`Configuration` - Included

`Paths` - Included

`Exporting` - Included

`Compressing` - Included

`Npm` - Included

`Bower` - Included

`Loader` - Included

`Resolve` - Included

`Server` - Included

`Configuration` - Included

`Paths` - Included

`Mime` - Included

`Transformers` - Included

`HTTPUtils` - Included

`Processing` - Included

`ProcessorUtils` - Included

`Exporting` - Included

`Compressing` - Included

`Dependencies` - Included

`Utils` - Included

`PathDependencyUtils` - Included

`URIUtils` - Included

`PathDigestUtils` - Included

`PathUtils` - Included

`DigestUtils` - Included

`SourceMapUtils` - Included