Initial

.gitignore

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+/.bundle/
+/.yardoc
+/Gemfile.lock
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/
+*.bundle
+*.so
+*.o
+*.a
+mkmf.log

Gemfile

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+source "https://rubygems.org"
+
+# Specify your gem's dependencies in xarb.gemspec
+gemspec

LICENSE.txt

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+Copyright (c) 2014 Adam Tanner
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# Xar
+
+Xar provides Ruby FFI bindings to libxar.
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem "xar"
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install xar
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Contributing
+
+1. Fork it ( https://github.com/[my-github-username]/xar/fork )
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request

Rakefile

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+require "bundler/gem_tasks"
+require "rake/testtask"
+
+Rake::TestTask.new do |t|
+  t.pattern = "spec/**/*_spec.rb"
+end
+
+task default: :test

lib/xar.rb

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+require "ffi"
+require "ffi/stat"
+
+module Xar
+  def self.open(path, flag)
+    xar_t = Xar::Native.xar_open(path, flag)
+
+    Xar::Archive.new(xar_t)
+  end
+end
+
+require "xar/native"
+require "xar/archive"

lib/xar/archive.rb

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+class Xar::Archive
+  def initialize(xar_t)
+    @xar_t = xar_t
+  end
+end

lib/xar/native.rb

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+module Xar::Native
+  extend FFI::Library
+
+  ffi_lib "libxar"
+
+  typedef :pointer, :xar_t
+  typedef :pointer, :xar_file_t
+  typedef :pointer, :xar_iter_t
+  typedef :pointer, :xar_subdoc_t
+  typedef :pointer, :xar_errctx_t
+
+  callback :err_handler_callback, [:int32, :int32, :xar_errctx_t, :pointer], :int32
+
+  FLAG = enum :read,  0,
+              :write, 1
+
+  attach_function :xar_open, [:string, FLAG], :xar_t
+  attach_function :xar_close, [:xar_t], :void
+
+  attach_function :xar_add, [:xar_t, :string], :xar_file_t
+  attach_function :xar_add_frombuffer, [:xar_t, :xar_file_t, :string, :string, :size_t], :xar_file_t
+  attach_function :xar_add_folder, [:xar_t, :xar_file_t, :string, FFI::Stat::Stat], :xar_file_t
+
+  attach_function :xar_extract, [:xar_t, :xar_file_t], :int32
+
+  attach_function :xar_register_errhandler, [:xar_t, :err_handler_callback, :pointer], :void
+  attach_function :xar_err_get_file, [:xar_errctx_t], :xar_file_t
+  attach_function :xar_err_get_string, [:xar_errctx_t], :string
+  attach_function :xar_err_get_errno, [:xar_errctx_t], :int
+
+  attach_function :xar_iter_new, [:void], :xar_iter_t
+  attach_function :xar_iter_free, [:xar_iter_t], :void
+
+  attach_function :xar_file_first, [:xar_t, :xar_iter_t], :xar_file_t
+  attach_function :xar_file_next, [:xar_iter_t], :xar_file_t
+
+  attach_function :xar_opt_set, [:xar_t, :string, :string], :int32
+  attach_function :xar_opt_get, [:xar_t, :string], :string
+
+  attach_function :xar_prop_set, [:xar_file_t, :string, :string], :int32
+  attach_function :xar_prop_get, [:xar_file_t, :string, :pointer], :int32
+  attach_function :xar_prop_first, [:xar_file_t, :xar_iter_t], :string
+  attach_function :xar_prop_next, [:xar_iter_t], :string
+
+  attach_function :xar_attr_set, [:xar_file_t, :string, :string, :string], :int32
+  attach_function :xar_attr_get, [:xar_file_t, :string, :string], :string
+  attach_function :xar_attr_first, [:xar_file_t, :string, :xar_iter_t], :string
+  attach_function :xar_attr_next, [:xar_iter_t], :string
+
+  attach_function :xar_subdoc_new, [:xar_t, :string], :xar_subdoc_t
+  attach_function :xar_subdoc_prop_set, [:xar_subdoc_t, :string, :string], :int32
+  attach_function :xar_subdoc_prop_get, [:xar_subdoc_t, :string, :pointer], :int32
+  attach_function :xar_subdoc_first, [:xar_t], :xar_subdoc_t
+  attach_function :xar_subdoc_next, [:xar_subdoc_t], :xar_subdoc_t
+  attach_function :xar_subdoc_name, [:xar_subdoc_t], :string
+  attach_function :xar_subdoc_copyout, [:xar_subdoc_t, :pointer, :pointer], :int32
+  attach_function :xar_subdoc_copyin, [:xar_subdoc_t, :string, :int], :int32
+  attach_function :xar_subdoc_remove, [:xar_subdoc_t], :void
+end

xar.gemspec

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+# coding: utf-8
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+Gem::Specification.new do |spec|
+  spec.name          = "xar"
+  spec.version       = "0.0.0"
+  spec.authors       = ["Adam Tanner"]
+  spec.email         = ["[email protected]"]
+  spec.summary       = %q{ Ruby FFI bindings to libxar. }
+  spec.description   = %q{ Ruby FFI bindings to libxar. }
+  spec.homepage      = "https://github.com/adamtanner/xar"
+  spec.license       = "MIT"
+
+  spec.files         = `git ls-files -z`.split("\x0")
+  spec.executables   = spec.files.grep(%r{^bin/}) {|f| File.basename(f) }
+  spec.test_files    = spec.files.grep(%r{^spec/})
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "ffi"
+  spec.add_dependency "ffi-stat"
+  spec.add_development_dependency "bundler", "~> 1.7"
+  spec.add_development_dependency "rake", "~> 10.0"
+end