Fix rubocop lint warnings

lib/paperclip.rb

@@ -238,7 +238,7 @@ module Paperclip
         attachment_for(name).file?
       end
 
-      validates_each(name) do |record, attr, value|
+      validates_each(name) do |record, _attr, _value|
         attachment = record.attachment_for(name)
         attachment.send(:flush_errors) unless attachment.valid?
       end
@@ -307,21 +307,21 @@ module Paperclip
     end
 
     def each_attachment
-      self.class.attachment_definitions.each do |name, definition|
+      self.class.attachment_definitions.each do |name, _definition|
         yield(name, attachment_for(name))
       end
     end
 
     def save_attached_files
       logger.info("[paperclip] Saving attachments.")
-      each_attachment do |name, attachment|
+      each_attachment do |_name, attachment|
         attachment.send(:save)
       end
     end
 
     def destroy_attached_files
       logger.info("[paperclip] Deleting attachments.")
-      each_attachment do |name, attachment|
+      each_attachment do |_name, attachment|
         attachment.send(:queue_existing_for_delete)
         attachment.send(:flush_deletes)
       end
@@ -330,7 +330,7 @@ module Paperclip
 
     def flush_attachment_jobs
       logger.info("[paperclip] flushing jobs.")
-      each_attachment do |name, attachment|
+      each_attachment do |_name, attachment|
         attachment.try(:flush_jobs)
       end
     end

lib/paperclip/attachment.rb

@@ -451,7 +451,7 @@ module Paperclip
     end
 
     def flush_errors #:nodoc:
-      errors.each do |error, message|
+      errors.each do |_error, message|
         [message].flatten.each {|m| instance.errors.add(name, m) }
       end
     end

lib/paperclip/callback_compatability.rb

@@ -21,13 +21,13 @@ module Paperclip
       end
 
       module Running
-        def run_paperclip_callbacks(callback, opts = nil, &blk)
+        def run_paperclip_callbacks(callback, _opts = nil, &blk)
           # The overall structure of this isn't ideal since after callbacks run even if
           # befores return false. But this is how rails 3's callbacks work, unfortunately.
-          if run_callbacks(:"before_#{callback}"){ |result, object| result == false } != false
+          if run_callbacks(:"before_#{callback}"){ |result, _object| result == false } != false
             blk.call
           end
-          run_callbacks(:"after_#{callback}"){ |result, object| result == false }
+          run_callbacks(:"after_#{callback}"){ |result, _object| result == false }
         end
       end
     end
@@ -39,7 +39,7 @@ module Paperclip
           if rails_version >= Gem::Version.new('5.0')
             {}
           elsif rails_version >= Gem::Version.new('4.1')
-            {terminator: ->(target, result) { result == false }}
+            {terminator: ->(_target, result) { result == false }}
           else
             {terminator: 'result == false'}
           end

lib/paperclip/geometry.rb

@@ -36,7 +36,7 @@ module Paperclip
 
     # Parses a "WxH" formatted string, where W is the width and H is the height.
     def self.parse string
-      if match = (string && string.match(/\b(\d*)x?(\d*)\b(?:,(\d?))?([\>\<\#\@\%^!])?/i))
+      if (match = (string && string.match(/\b(\d*)x?(\d*)\b(?:,(\d?))?([\>\<\#\@\%^!])?/i)))
         Geometry.new(
           width: match[1],
           height: match[2],
@@ -129,9 +129,9 @@ module Paperclip
 
     def cropping dst, ratio, scale
       if ratio.horizontal? || ratio.square?
-        "%dx%d+%d+%d" % [ dst.width, dst.height, 0, (self.height * scale - dst.height) / 2 ]
+        "%dx%d+%d+%d" % [ dst.width, dst.height, 0, ((self.height * scale) - dst.height) / 2 ]
       else
-        "%dx%d+%d+%d" % [ dst.width, dst.height, (self.width * scale - dst.width) / 2, 0 ]
+        "%dx%d+%d+%d" % [ dst.width, dst.height, ((self.width * scale) - dst.width) / 2, 0 ]
       end
     end
   end

lib/paperclip/interpolations.rb

@@ -39,29 +39,29 @@ module Paperclip
     end
 
     # Returns the filename, the same way as ":basename.:extension" would.
-    def filename attachment, style_name
+    def filename(attachment, style_name)
       "#{basename(attachment, style_name)}.#{extension(attachment, style_name)}"
     end
 
     # This interpolation is used in the default :path to ease default specifications.
     # So it just interpolates :url template without checking if preocessing and
     # file existence.
-    def url attachment, style_name
+    def url(attachment, style_name)
       interpolate(attachment.class.url_template, attachment, style_name)
     end
 
     # Returns the timestamp as defined by the <attachment>_updated_at field
-    def timestamp attachment, style_name
+    def timestamp(attachment, _style_name)
       attachment.instance_read(:updated_at).to_s
     end
 
     # Returns the Rails.root constant.
-    def rails_root attachment, style_name
+    def rails_root(_attachment, _style_name)
       Rails.root
     end
 
     # Returns the Rails.env constant.
-    def rails_env attachment, style_name
+    def rails_env(_attachment, _style_name)
       Rails.env
     end
 
@@ -69,38 +69,38 @@ module Paperclip
     # e.g. "users" for the User class.
     # NOTE: The arguments need to be optional, because some tools fetch
     # all class names. Calling #class will return the expected class.
-    def class attachment = nil, style_name = nil
+    def class(attachment = nil, style_name = nil)
       return super() if attachment.nil? && style_name.nil?
       plural_cache.underscore_and_pluralize_class(attachment.instance.class)
     end
 
     # Returns the basename of the file. e.g. "file" for "file.jpg"
-    def basename attachment, style_name
+    def basename(attachment, _style_name)
       File.basename(attachment.original_filename, ".*")
     end
 
     # Returns the extension of the file. e.g. "jpg" for "file.jpg"
     # If the style has a format defined, it will return the format instead
     # of the actual extension.
-    def extension attachment, style_name
+    def extension(attachment, style_name)
       ((style_name = attachment.styles[style_name]) && style_name[:format]) ||
         File.extname(attachment.original_filename)[1..-1] || ''
     end
 
     # Returns the id of the instance.
-    def id attachment, style_name
+    def id(attachment, _style_name)
       attachment.instance.id
     end
 
     # Returns the id of the instance in a split path form. e.g. returns
     # 000/001/234 for an id of 1234.
-    def id_partition attachment, style_name
+    def id_partition(attachment, _style_name)
       ("%09d" % attachment.instance.id).scan(/\d{3}/).join("/")
     end
 
     # Returns the pluralized form of the attachment name. e.g.
     # "avatars" for an attachment of :avatar
-    def attachment attachment, style_name
+    def attachment(attachment, _style_name)
       plural_cache.pluralize_symbol(attachment.name)
     end
 

lib/paperclip/iostream.rb

@@ -15,9 +15,8 @@ module IOStream
   # in as the destination and returns the IO or Tempfile as passed in if one is sent as the destination.
   def stream_to object, path_or_file, in_blocks_of = 8192
     dstio = case path_or_file
-            when String   then File.new(path_or_file, "wb+")
+            when String then File.new(path_or_file, "wb+")
-            when IO       then path_or_file
+            when IO, Tempfile then path_or_file
-            when Tempfile then path_or_file
             end
     buffer = ""
     object.rewind

lib/paperclip/matchers/validate_attachment_size_matcher.rb

@@ -8,7 +8,7 @@ module Paperclip
       class ValidateAttachmentSizeMatcher
         def initialize attachment_name
           @attachment_name = attachment_name
-          @low, @high = 0, (1.0/0)
+          @low, @high = 0, Float::INFINITY
         end
 
         def less_than size
@@ -68,12 +68,12 @@ module Paperclip
         end
 
         def lower_than_high?
-          return true if @high == (1.0/0)
+          return true if @high == Float::INFINITY
           passes_validation_with_size(@high - 1)
         end
 
         def higher_than_high?
-          return true if @high == (1.0/0)
+          return true if @high == Float::INFINITY
           not passes_validation_with_size(@high + 1)
         end
       end

lib/paperclip/optimizer.rb

@@ -15,7 +15,8 @@ module Paperclip
       Paperclip::Upfile.content_type_from_file(@file.path)
     end
 
-    def optimize(file)
+    def optimize(_file)
+      # TODO: use the arg?
       src = @file.path
       dst = "#{src}-#{SecureRandom.hex}"
       src_shell = src.shellescape

lib/paperclip/railtie.rb

@@ -2,7 +2,7 @@ module Paperclip
   class Railtie < Rails::Railtie
     initializer 'paperclip.railtie.configure' do
       if defined? Rails.root
-        Dir.glob(File.join(File.expand_path(Rails.root), "lib", "paperclip_processors", "*.rb")).each do |processor|
+        Dir.glob(File.join(File.expand_path(Rails.root), "lib", "paperclip_processors", "*.rb")).sort.each do |processor|
           require processor
         end
       end

lib/paperclip/storage/cached.rb

@@ -130,7 +130,7 @@ module Paperclip
       # Enqueues all pending jobs. First, jobs are placed to internal queue in flush_writes
       # (in after_save) and this method pushes them for execution (in after_commit).
       def flush_jobs
-        queued_jobs&.each(&:call).clear
+        queued_jobs&.each(&:call)&.clear
       end
 
       def upload_to(store_id)

lib/paperclip/storage/delayeds3.rb

@@ -319,7 +319,8 @@ module Paperclip
             break if File.exist?(path) # Ruby 1.9.2 does not raise if the removal failed.
           end
         rescue Errno::EEXIST, Errno::EACCES, Errno::ENOTEMPTY,
-               Errno::ENOENT, Errno::EINVAL, Errno::ENOTDIR, Errno::ESTALE => _e
+               Errno::ENOENT, Errno::EINVAL, Errno::ENOTDIR, Errno::ESTALE
+          # already deleted
         rescue SystemCallError => e
           Rollbar.error(e, {path: path, initial_path: initial_path})
         end
@@ -333,7 +334,8 @@ module Paperclip
         -> { delete_local_files!(filenames) }
       end
 
-      def delete_local_files!(filenames = filesystem_paths.values)
+      def delete_local_files!(_filenames = filesystem_paths.values)
+        # TODO: _filenames как-то должно использоваться?
         filesystem_paths.values.each do |filename|
           log("Deleting local file #{filename}")
           delete_recursive(filename)
@@ -341,7 +343,7 @@ module Paperclip
       end
 
       def flush_jobs
-        queued_jobs&.each(&:call).clear
+        queued_jobs&.each(&:call)&.clear
       end
 
       def upload_to(store_id)

lib/paperclip/storage/filesystem.rb

@@ -52,7 +52,7 @@ module Paperclip
           begin
             log("deleting #{path}")
             FileUtils.rm(path)
-          rescue Errno::ENOENT => e
+          rescue Errno::ENOENT
             # ignore file-not-found, let everything else pass
           end
           begin

lib/tasks/paperclip_tasks.rake

@@ -52,7 +52,7 @@ namespace :paperclip do
     desc "Regenerates content_type/size metadata for a given CLASS (and optional ATTACHMENT)."
     task :metadata => :environment do
       for_all_attachments do |instance, name|
-        if file = instance.send(name).to_file
+        if (file = instance.send(name).to_file)
           instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip)
           instance.send("#{name}_content_type=", file.content_type.strip)
           instance.send("#{name}_file_size=", file.size) if instance.respond_to?("#{name}_file_size")