lib/vips/sourcecustom.rb in vips-8.11.3 vs lib/vips/sourcecustom.rb in vips-8.12.1

@@ -2,18 +2,18 @@
 # via ruby-ffi.
 #
 # Author::    John Cupitt  (mailto:[e-mail])
 # License::   MIT
 
-require 'ffi'
+require "ffi"
 
 module Vips
-  if Vips::at_least_libvips?(8, 9)
+  if Vips.at_least_libvips?(8, 9)
     attach_function :vips_source_custom_new, [], :pointer
   end
 
-  # A source you can attach action signal handlers to to implement 
+  # A source you can attach action signal handlers to to implement
   # custom input types.
   #
   # For example:
   #
   # ```ruby
@@ -21,11 +21,11 @@
   # source = Vips::SourceCustom.new
   # source.on_read { |length| file.read length }
   # image = Vips::Image.new_from_source source
   # ```
   #
-  # (just an example -- of course in practice you'd use {Source#new_from_file} 
+  # (just an example -- of course in practice you'd use {Source#new_from_file}
   # to read from a named file)
   class SourceCustom < Vips::Source
     module SourceCustomLayout
       def self.included(base)
         base.class_eval do
@@ -42,11 +42,11 @@
     class ManagedStruct < Vips::Source::ManagedStruct
       include SourceCustomLayout
     end
 
     def initialize
-      pointer = Vips::vips_source_custom_new
+      pointer = Vips.vips_source_custom_new
       raise Vips::Error if pointer.null?
 
       super pointer
     end
 
@@ -58,21 +58,21 @@
     # @yieldparam length [Integer] Read and return up to this many bytes
     # @yieldreturn [String] Up to length bytes of data, or nil for EOF
     def on_read &block
       signal_connect "read" do |buf, len|
         chunk = block.call len
-        return 0 if chunk == nil
+        return 0 if chunk.nil?
         bytes_read = chunk.bytesize
         buf.put_bytes(0, chunk, 0, bytes_read)
         chunk.clear
 
         bytes_read
       end
     end
 
     # The block is executed to seek the source. The interface is exactly as
-    # IO::seek, ie. it should take an offset and whence, and return the 
+    # IO::seek, ie. it should take an offset and whence, and return the
     # new read position.
     #
     # This handler is optional -- if you do not attach a seek handler,
     # {Source} will treat your source like an unseekable pipe object and
     # do extra caching.
@@ -83,8 +83,7 @@
     def on_seek &block
       signal_connect "seek" do |offset, whence|
         block.call offset, whence
       end
     end
-
   end
 end