Drop fiddle, use C

.ruby-version

@@ -1 +1 @@
-2.3.8
+2.6.1

Rakefile

@@ -9,3 +9,9 @@ begin
 rescue LoadError
   # no rspec available
 end
+
+require 'rake/extensiontask'
+
+Rake::ExtensionTask.new('rszr') do |ext|
+  ext.lib_dir = 'lib/rszr'
+end

benchmark/memory.rb

@@ -0,0 +1,40 @@
+require 'memory_profiler'
+require 'rszr'
+require 'mini_magick'
+require 'gd2-ffij'
+
+ITERATIONS = 100
+
+original = Pathname.new(__FILE__).dirname.join('../spec/images/test.jpg')
+resized = Pathname.new(__FILE__).dirname.join('output.jpg')
+
+mini_magick = MemoryProfiler.report do
+  ITERATIONS.times do
+    image = MiniMagick::Image.open(original.to_s)
+    image.resize '800x532'
+    image.write resized.to_s
+    image = nil
+  end
+end
+
+mini_magick.pretty_print(scale_bytes: true)
+
+gd2 = MemoryProfiler.report do
+  image = GD2::Image.import(original.to_s)
+  image.resize! 800, 532
+  image.export resized.to_s
+  image = nil
+end
+
+gd2.pretty_print(scale_bytes: true)
+
+rszr = MemoryProfiler.report do
+  ITERATIONS.times do
+    image = Rszr::Image.load(original.to_s)
+    image.resize! 800, 532
+    image.save resized.to_s
+    image = nil
+  end
+end
+
+rszr.pretty_print(scale_bytes: true)

benchmark/benchmark.rb → benchmark/speed.rb

@@ -14,14 +14,16 @@
       image = MiniMagick::Image.open(original.to_s)
       image.resize '800x532'
       image.write resized.to_s
+      image = nil
     end
   end
-
+  
   x.report 'GD2' do
     ITERATIONS.times do
       image = GD2::Image.import(original.to_s)
       image.resize! 800, 532
       image.export resized.to_s
+      image = nil
     end
   end
 
@@ -30,6 +32,7 @@
       image = Rszr::Image.load(original.to_s)
       image.resize! 800, 532
       image.save resized.to_s
+      image = nil
     end
   end
 end

ext/rszr/errors.c

@@ -0,0 +1,63 @@
+#ifndef RUBY_RSZR_ERRORS
+#define RUBY_RSZR_ERRORS
+
+#include "rszr.h"
+#include "errors.h"
+
+VALUE eRszrError = Qnil;
+VALUE eRszrFileNotFound = Qnil;
+VALUE eRszrTransformationError = Qnil;
+VALUE eRszrErrorWithMessage = Qnil;
+VALUE eRszrLoadError = Qnil;
+VALUE eRszrSaveError = Qnil;
+
+static const char * const sRszrErrorMessages[] =
+{
+  "File does not exist",
+  "File is a directory",
+  "Read permission denied",
+  "Unsupported format",
+  "Path too long",
+  "Non-existant path component",
+  "Path component is not a directory",
+  "Path outside address space",
+  "Too many symbolic links",
+  "Out of memory",
+  "Out of file descriptors",
+  "Write permission denied",
+  "Out of disk space",
+  "Unknown error"
+};
+const int RSZR_MAX_ERROR_INDEX = 13;
+
+void Init_rszr_errors()
+{
+  eRszrError = rb_define_class_under(mRszr, "Error", rb_eStandardError);
+  eRszrFileNotFound = rb_define_class_under(mRszr, "FileNotFound", eRszrError);
+  eRszrTransformationError = rb_define_class_under(mRszr, "TransformationError", eRszrError);
+  eRszrErrorWithMessage = rb_define_class_under(mRszr, "ErrorWithMessage", eRszrError);
+  eRszrLoadError = rb_define_class_under(mRszr, "LoadError", eRszrErrorWithMessage);
+  eRszrSaveError = rb_define_class_under(mRszr, "SaveError", eRszrErrorWithMessage);
+}
+
+static void rszr_raise_error_with_message(VALUE rb_error_class, Imlib_Load_Error error)
+{
+  int error_index = (int) error - 1;
+  if (error_index < 1 || error_index > RSZR_MAX_ERROR_INDEX)
+    error_index = 13;
+  VALUE rb_error = rb_exc_new2(rb_error_class, sRszrErrorMessages[error_index]);
+  rb_exc_raise(rb_error);
+}
+
+void rszr_raise_load_error(Imlib_Load_Error error)
+{
+  rszr_raise_error_with_message(eRszrLoadError, error);
+}
+
+void rszr_raise_save_error(Imlib_Load_Error error)
+{
+  rszr_raise_error_with_message(eRszrSaveError, error);
+}
+
+
+#endif

ext/rszr/errors.h

@@ -0,0 +1,15 @@
+#ifndef RUBY_RSZR_ERRORS_H
+#define RUBY_RSZR_ERRORS_H
+
+void Init_rszr_errors();
+void rszr_raise_load_error(Imlib_Load_Error error);
+void rszr_raise_save_error(Imlib_Load_Error error);
+
+extern VALUE eRszrError;
+extern VALUE eRszrFileNotFound;
+extern VALUE eRszrTransformationError;
+extern VALUE eRszrErrorWithMessage;
+extern VALUE eRszrLoadError;
+extern VALUE eRszrSaveError;
+
+#endif

ext/rszr/extconf.rb

@@ -0,0 +1,37 @@
+require 'mkmf'
+require 'rbconfig'
+=begin
+LIBDIR      = RbConfig::CONFIG['libdir']
+INCLUDEDIR  = RbConfig::CONFIG['includedir']
+
+HEADER_DIRS = [
+  '/opt/local/include',
+  '/usr/local/include',
+  INCLUDEDIR,
+  '/usr/include',
+]
+
+LIB_DIRS = [
+  '/opt/local/lib',
+  '/usr/local/lib',
+  LIBDIR,
+  '/usr/lib',
+]
+
+dir_config('Imlib2', HEADER_DIRS, LIB_DIRS)
+=end
+imlib2_config = with_config('imlib2-config', 'imlib2-config')
+
+$CFLAGS << ' -DX_DISPLAY_MISSING ' << `#{imlib2_config} --cflags`.chomp
+$LDFLAGS << ' ' << `#{imlib2_config} --libs`.chomp
+$LDFLAGS.gsub!(/\ -lX11\ -lXext/, '') if RUBY_PLATFORM =~ /darwin/
+
+unless find_header('Imlib2.h')
+  abort 'imlib2 development headers are missing'
+end
+
+unless find_library('imlib2', 'imlib_set_cache_size')
+  abort 'imlib2 is missing'
+end
+
+create_makefile 'rszr'