Module: Ddr::Utils
- Extended by:
- Deprecation
- Defined in:
- lib/ddr/utils.rb
Class Method Summary collapse
- .digest(content, algorithm) ⇒ Object
- .ds_as_of_date_time(ds) ⇒ Object
- .file_name_for(file) ⇒ Object (also: file_name)
- .file_or_path?(file) ⇒ Boolean
- .file_path(file) ⇒ Object
- .file_path?(file) ⇒ Boolean
- .file_uri?(uri) ⇒ Boolean
-
.mime_type_for(file, file_name = nil) ⇒ String
Return a mime type for the file, using the file_name if necessary file can be a File object or file path (String).
-
.path_from_uri(uri_string) ⇒ String
Return file path for URI string Should reverse .path_to_uri “file:/path/to/file” => “/path/to/file”.
-
.path_to_uri(path) ⇒ String
Return URI string for file path Should reverse .path_from_uri “/path/to/file” => “file:/path/to/file”.
-
.pid_for_identifier(identifier, opts = {}) ⇒ Object
Find an object with a given identifier and return its PID.
-
.reflection_object_class(reflection) ⇒ Object
Returns the class associated with the :class_name attribute in the options of a reflection E.g., reflection_object_class(relationship_object_reflection(“Item”, “parent”)) returns the Collection class.
-
.relationship_object_reflection(model, relationship_name) ⇒ Object
Returns the reflection object for a given model name and relationship name E.g., relationship_object_reflection(“Item”, “parent”) returns the reflection object for an Item’s parent relationship.
- .sanitize_filename(file_name) ⇒ Object
-
.solr_date(dt) ⇒ String
Returns a string suitable to index as a Solr date.
- .solr_dates(dts) ⇒ Object
Class Method Details
.digest(content, algorithm) ⇒ Object
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# File 'lib/ddr/utils.rb', line 6 def self.digest content, algorithm raise TypeError, "Algorithm must be a string: #{algorithm.inspect}" unless algorithm.is_a?(String) digest_class = OpenSSL::Digest.const_get(algorithm.sub("-", "").to_sym) digest_class.new(content).to_s rescue NameError => e raise ArgumentError, "Invalid algorithm: #{algorithm}" end |
.ds_as_of_date_time(ds) ⇒ Object
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# File 'lib/ddr/utils.rb', line 88 def self.ds_as_of_date_time(ds) ds.create_date_string end |
.file_name_for(file) ⇒ Object Also known as: file_name
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# File 'lib/ddr/utils.rb', line 44 def self.file_name_for(file) if file.respond_to?(:original_filename) && file.original_filename.present? file.original_filename else File.basename file_path(file) end end |
.file_or_path?(file) ⇒ Boolean
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# File 'lib/ddr/utils.rb', line 23 def self.file_or_path?(file) file_path(file) rescue ArgumentError false end |
.file_path(file) ⇒ Object
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# File 'lib/ddr/utils.rb', line 34 def self.file_path(file) if file.respond_to?(:path) File.absolute_path(file.path) elsif file_path?(file) file else raise ArgumentError, "Argument is neither a File nor a path to an existing file." end end |
.file_path?(file) ⇒ Boolean
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# File 'lib/ddr/utils.rb', line 29 def self.file_path?(file) # length is a sanity check file.is_a?(String) && (file.length < 1024) && File.exist?(file) end |
.file_uri?(uri) ⇒ Boolean
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# File 'lib/ddr/utils.rb', line 52 def self.file_uri?(uri) return false unless uri URI.parse(uri).scheme == "file" end |
.mime_type_for(file, file_name = nil) ⇒ String
Return a mime type for the file, using the file_name if necessary file can be a File object or file path (String)
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# File 'lib/ddr/utils.rb', line 17 def self.mime_type_for(file, file_name=nil) Deprecation.warn(self, "`Ddr::Utils.mime_type_for` is deprecated and will be removed in ddr-models 3.0." \ " Use `Ddr::Models::MediaType.call(file)` instead. (called from #{caller.first})") Ddr::Models::MediaType.call(file_name || file) end |
.path_from_uri(uri_string) ⇒ String
Return file path for URI string Should reverse .path_to_uri “file:/path/to/file” => “/path/to/file”
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# File 'lib/ddr/utils.rb', line 69 def self.path_from_uri(uri_string) uri = URI.parse(uri_string) unless uri.scheme == "file" raise ArgumentError, "URI does not have the file: scheme." end URI.unescape(uri.path) end |
.path_to_uri(path) ⇒ String
Return URI string for file path Should reverse .path_from_uri “/path/to/file” => “file:/path/to/file”
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# File 'lib/ddr/utils.rb', line 82 def self.path_to_uri(path) uri = URI.parse URI.escape(path) uri.scheme = "file" uri.to_s end |
.pid_for_identifier(identifier, opts = {}) ⇒ Object
Find an object with a given identifier and return its PID. Returns the PID if a single object is found. Returns nil if no object is found. Raises Ddr::Models::Error if more than one object is found. Options can be provided to limit the scope of matching objects
model: Will only consider objects of that model
collection: Will only consider objects that either are that collection or which are
direct children of that collection (i.e., effectively searches a collection and its
items for an object with the given identifier)
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# File 'lib/ddr/utils.rb', line 101 def self.pid_for_identifier(identifier, opts={}) model = opts.fetch(:model, nil) collection = opts.fetch(:collection, nil) objs = [] ActiveFedora::Base.find_each( { Ddr::Index::Fields::IDENTIFIER_ALL => identifier }, { :cast => true } ) { |o| objs << o } pids = [] objs.each { |obj| pids << obj.pid } if model.present? objs.each { |obj| pids.delete(obj.pid) unless obj.is_a?(model.constantize) } end if collection.present? objs.each do |obj| pids.delete(obj.pid) unless obj == collection || obj.parent == collection end end case pids.size when 0 nil when 1 pids.first else raise Ddr::Models::Error, I18n.t('ddr.errors.multiple_object_matches', :criteria => "identifier #{identifier}") end end |
.reflection_object_class(reflection) ⇒ Object
Returns the class associated with the :class_name attribute in the options of a reflection E.g., reflection_object_class(relationship_object_reflection(“Item”, “parent”)) returns the Collection class.
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# File 'lib/ddr/utils.rb', line 151 def self.reflection_object_class(reflection) reflection_object_model = nil klass = nil if reflection[1].[:class_name] reflection_object_model = reflection[1].[:class_name] else reflection_object_model = ActiveSupport::Inflector.camelize(reflection[0]) end if reflection_object_model begin klass = reflection_object_model.constantize rescue NameError # nothing to do here except that we can't return the reflection object class end end return klass end |
.relationship_object_reflection(model, relationship_name) ⇒ Object
Returns the reflection object for a given model name and relationship name E.g., relationship_object_reflection(“Item”, “parent”) returns the reflection object for an Item’s parent relationship. This reflection object can then be used to obtain the class of the relationship object using the reflection_object_class(reflection) method below.
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# File 'lib/ddr/utils.rb', line 130 def self.relationship_object_reflection(model, relationship_name) reflection = nil if model begin reflections = model.constantize.reflections rescue NameError # nothing to do here except that we can't return the appropriate reflection else reflections.each do |reflect| if reflect[0].eql?(relationship_name.to_sym) reflection = reflect end end end end return reflection end |
.sanitize_filename(file_name) ⇒ Object
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# File 'lib/ddr/utils.rb', line 57 def self.sanitize_filename(file_name) return unless file_name raise ArgumentError, "file_name argument must be a string" unless file_name.is_a?(String) raise ArgumentError, "file_name argument must not include path" if file_name.include?(File::SEPARATOR) file_name.gsub(/[^\w\.\-]/,"_") end |
.solr_date(dt) ⇒ String
Returns a string suitable to index as a Solr date
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# File 'lib/ddr/utils.rb', line 172 def self.solr_date(dt) return if dt.nil? dt.to_time.utc.iso8601 end |
.solr_dates(dts) ⇒ Object
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# File 'lib/ddr/utils.rb', line 177 def self.solr_dates(dts) dts.map { |dt| solr_date(dt) } end |