method renamed to use the same semantic like duperemove (dedupe_extent)

deduperemoverb.gemspec

@@ -9,14 +9,13 @@ Gem::Specification.new do |s|
 	s.homepage = 'https://git.denkn.at/deac/deduperemoverb'
 	s.summary = 'Deduplication of file junks of found files by deduperemove.'
 	s.files =
-		FileList[
-			'lib/**/*.rb',
-			'bin/*',
-			'Gemfile',
-			'Gemfile.lock',
-			'ext/*/*.c',
-			'ext/*/extconf.rb'
-		]
+		FileList[ %w[
+			lib/**/*.rb
+			bin/*
+			Gemfile    Gemfile.lock
+			ext/*/*.c  ext/*/extconf.rb
+		]]
+	s.bindir = %w[bin]
 	s.require_paths = %w[lib]
 	s.extensions = %w[ext/deduperemoverb/extconf.rb]
 
@@ -24,5 +23,6 @@ Gem::Specification.new do |s|
 	s.add_dependency "ffi", '~> 1.15'
 	s.add_dependency "sqlite3", '~> 1.4'
 
-	#s.install_tasks name: 'compile'
+	s.requirements << 'cc'
+	s.requirements << 'ruby-dev'
 end

lib/deduperemoverb.rb

@@ -111,7 +111,7 @@ class Duperemove
 	end
 
 
-	def self.duperemove fd, offset, length, dupes
+	def self.dedupe_extent fd, offset, length, dupes
 		rr = FileDedupeRange[dupes.size].new offset, length
 		fds = []
 		dupes.each_with_index do |(fd,os),i|
@@ -224,7 +224,7 @@ class Duperemove
 					begin
 						t1 = Time.now
 						rs =
-							Duperemove.duperemove fst.file,
+							Duperemove.dedupe_extent fst.file,
 								fst.offset,
 								[ fst.size - fst.offset, block_size ].min,
 								fs.map {|f| [f.file, f.offset] }.to_h