Vendor snappy

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/snappy"]
+	path = vendor/snappy
+	url = git@github.com:google/snappy.git

Rakefile

@@ -2,6 +2,7 @@ require "bundler/setup"
 require "bundler/gem_tasks"
 require "rake/testtask"
 require "rbconfig"
+DLEXT = RbConfig::CONFIG['DLEXT']
 
 Rake::TestTask.new do |t|
   t.warning = true
@@ -33,12 +34,6 @@ if defined?(JRUBY_VERSION)
     end
   end
 
-  desc 'Clean up build artifacts'
-  task :clean do
-    rm_rf 'ext/java/build'
-    rm_rf 'lib/snappy_ext.jar'
-  end
-
   desc 'Package the jar'
   file 'lib/snappy_ext.jar' => :compile do |t|
     ant.jar destfile: 'lib/snappy_ext.jar', basedir: '${build.dir}' do
@@ -50,19 +45,23 @@ if defined?(JRUBY_VERSION)
   task :test => 'lib/snappy_ext.jar'
   task :build => [:clean, 'lib/snappy_ext.jar']
 else
-  DLEXT = RbConfig::CONFIG["DLEXT"]
-
   file "ext/snappy_ext.#{DLEXT}" => Dir.glob("ext/*{.rb,.c}") do
     Dir.chdir("ext") do
-       ruby "extconf.rb"
-       sh "make"
+      ruby "extconf.rb"
+      sh "make"
     end
     cp "ext/snappy_ext.#{DLEXT}", "lib/snappy_ext.#{DLEXT}"
   end
 
-  task :clean do
-    rm_rf(["ext/snappy_ext.#{DLEXT}", "lib/snappy_ext.#{DLEXT}", "ext/mkmf.log", "ext/config.h", "ext/api.o", "ext/Makefile", "ext/snappy.cc", "ext/snappy.h", "ext/snappy.o"] + Dir["ext/snappy-*"])
-  end
 
   task :test => "ext/snappy_ext.#{DLEXT}"
 end
+
+desc 'Clean up build artifacts'
+task :clean do
+  rm_rf 'ext/java/build'
+  rm_rf 'lib/snappy_ext.jar'
+  rm_rf(["ext/snappy_ext.#{DLEXT}", "lib/snappy_ext.#{DLEXT}", 'ext/mkmf.log', 'ext/config.h', 'ext/api.o', 'ext/Makefile', 'ext/snappy.cc', 'ext/snappy.h', 'ext/snappy.o'] + Dir['ext/snappy-*'])
+end
+
+task :default => :test

ext/extconf.rb

@@ -1,39 +1,30 @@
 require 'mkmf'
 require 'fileutils'
 
-unless have_library 'snappy_ext'
-  dst = File.dirname File.expand_path __FILE__
-
-  tar = 'tar'
-  tar = 'gnutar' if find_executable 'gnutar'
-
-  ver = "1.1.1"
-  src = "snappy-#{ver}"
-
-  FileUtils.rm_rf File.join dst, src
-  system "curl -s http://snappy.googlecode.com/files/#{src}.tar.gz | #{tar} xz"
-
-  src = File.join dst, src
-
-  Dir.chdir src do
-    system "./configure --disable-option-checking --disable-dependency-tracking --disable-gtest --without-gflags"
+unless have_library 'snappy'
+  # build vendor/snappy
+  pwd = File.dirname File.expand_path __FILE__
+  dir = File.join pwd, '..', 'vendor', 'snappy'
+
+  Dir.chdir dir do
+    system './autogen.sh'
+    system './configure --disable-option-checking --disable-dependency-tracking --disable-gtest --without-gflags'
   end
 
-  %w(
-config.h
-snappy-c.cc
-snappy-c.h
-snappy-internal.h
-snappy-sinksource.cc
-snappy-sinksource.h
-snappy-stubs-internal.cc
-snappy-stubs-internal.h
-snappy-stubs-public.h
-snappy.cc
-snappy.h
-  ).each do |file|
-    FileUtils.copy File.join(src, file), File.join(dst, file) if FileTest.exist? File.join(src, file)
-  end
+  src = %w(
+   config.h
+   snappy-c.cc
+   snappy-c.h
+   snappy-internal.h
+   snappy-sinksource.cc
+   snappy-sinksource.h
+   snappy-stubs-internal.cc
+   snappy-stubs-internal.h
+   snappy-stubs-public.h
+   snappy.cc
+   snappy.h
+  ).map { |e| File.join dir, e }
+  FileUtils.cp src, pwd, :verbose => true
 end
 
 create_makefile 'snappy_ext'

snappy.gemspec

@@ -29,4 +29,28 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "minitest"
+
+  # get an array of submodule dirs by executing 'pwd' inside each submodule
+  `git submodule --quiet foreach pwd`.split($\).each do |submodule_path|
+    # for each submodule, change working directory to that submodule
+    Dir.chdir(submodule_path) do
+
+      # issue git ls-files in submodule's directory
+      submodule_files = `git ls-files`.split($\)
+
+      # prepend the submodule path to create absolute file paths
+      submodule_files_fullpaths = submodule_files.map do |filename|
+        "#{submodule_path}/#{filename}"
+      end
+
+      # remove leading path parts to get paths relative to the gem's root dir
+      # (this assumes, that the gemspec resides in the gem's root dir)
+      submodule_files_paths = submodule_files_fullpaths.map do |filename|
+        filename.gsub "#{File.dirname(__FILE__)}/", ""
+      end
+
+      # add relative paths to gem.files
+      spec.files += submodule_files_paths
+    end
+  end
 end