chore(go): Adding fun comment

correctly.

.gitignore

@@ -13,7 +13,7 @@ pkg
 
 .bundle
 
-# Have editor/IDE/OS specific files you need to ignore? Consider using a global gitignore: 
+# Have editor/IDE/OS specific files you need to ignore? Consider using a global gitignore:
 #
 # * Create a file at ~/.gitignore
 # * Include files you want ignored
@@ -39,3 +39,22 @@ pkg
 #
 # For vim:
 *.swp
+#
+# For IDEA:
+.idea/
+*.iml
+
+Gemfile.lock
+vendor/
+
+homesick*.gem
+
+# Go scaffolding artifacts
+dist/
+*.test
+*.out
+
+# rbenv configuration
+.ruby-version
+
+.github/*

.rspec

@@ -0,0 +1 @@
+--color

.rubocop.yml

@@ -0,0 +1,19 @@
+# TODO: Eval is required for the .homesickrc feature. This should eventually be
+# removed if the feature is implemented in a more secure way.
+Eval:
+  Enabled: false
+
+# TODO: The following settings disable reports about issues that can be fixed
+# through refactoring. Remove these as offenses are removed from the code base.
+
+ClassLength:
+  Enabled: false
+
+CyclomaticComplexity:
+  Max: 13
+
+LineLength:
+  Enabled: false
+
+MethodLength:
+  Max: 36

.travis.yml

@@ -0,0 +1,7 @@
+language: ruby
+rvm:
+  - 2.5.0
+  - 2.4.0
+  - 2.3.3
+  - 2.2.6
+sudo: false

ChangeLog.markdown

@@ -1,4 +1,113 @@
-# 2.0.0
+# 1.1.6
+ * Makesure the FileUtils is imported correctly to avoid a potential error
+ * Fixes an issue where comparing a diff would not use the content of the new file
+ * Small documentation fixes
+
+# 1.1.5
+ * Fixed problem with version number being incorrect.
+
+# 1.1.4
+ * Make sure symlink conflicts are explicitly communicated to a user and symlinks are not silently overwritten
+ * Use real paths of symlinks when linking a castle into home
+ * Fix a problem when in a diff when asking a user to resolve a conflict
+ * Some code refactoring and fixes
+
+# 1.1.3
+ * Allow a destination to be passed when cloning a castle
+ * Make sure `homesick edit` opens default editor in the root of the given castle
+ * Fixed bug when diffing edited files
+ * Fixed crashing bug when attempting to diff directories
+ * Ensure that messages are escaped correctly on `git commit all`
+
+# 1.1.2
+ * Added '--force' option to the rc command to bypass confirmation checks when running a .homesickrc file
+ * Added a check to make sure that a minimum of Git 1.8.0 is installed. This stops Homesick failing silently if Git is not installed.
+ * Code refactoring and fixes.
+
+# 1.1.0
+ * Added exec and exec_all commands to run commands inside one or all clones castles.
+ * Code refactoring.
+
+# 1.0.0
+ * Removed support for Ruby 1.8.7
+ * Added a version command
+
+# 0.9.8
+ * Introduce new commands
+     * `homesick cd`
+     * `homesick open`
+
+# 0.9.4
+ * Use https protocol instead of git protocol
+ * Introduce new commands
+     * `homesick unlink`
+     * `homesick rc`
+
+# 0.9.3
+ * Add recursive option to `homesick clone`
+
+# 0.9.2
+ * Set "dotfiles" as default castle name
+ * Introduce new commands
+     * `homesick show_path`
+     * `homesick status`
+     * `homesick diff`
+
+# 0.9.1
+ * Fixed small bugs: #35, #40
+
+# 0.9.0
+ * Introduce .homesick_subdir #39
+
+# 0.8.1
+ * Fixed `homesick list` bug on ruby 2.0 #37
+
+# 0.8.0
+ * Introduce commit & push command
+ * commit changes in castle and push to remote
+ * Enable recursive submodule update
+ * Git add when track
+
+# 0.7.0
+ * Fixed double-cloning #14
+ * New option for pull command: --all
+  * pulls each castle, instead of just one
+
+# 0.6.1
+
+ * Add a license
+
+# 0.6.0
+
+ * Introduce .homesickrc
+  * Castles can now have a .homesickrc inside them
+  * On clone, this is eval'd inside the destination directory
+ * Introduce track command
+  * Allows easily moving an existing file into a castle, and symlinking it back
+
+# 0.5.0
+
+ * Fixed listing of castles cloned using `homesick clone <github-user>/<github-repo>` (issue 3)
+ * Added `homesick pull <CASTLE>` for updating castles (thanks Jorge Dias!)
+ * Added a very basic `homesick generate <CASTLE>`
+
+# 0.4.1
+
+ * Improved error message when a castle's home dir doesn't exist
+
+# 0.4.0
+
+ * `homesick clone` can now take a path to a directory on the filesystem, which will be symlinked into place
+ * `homesick clone` now tries to `git submodule init` and `git submodule update` if git submodules are defined for a cloned repo
+ * Fixed missing dependency on thor and others
+ * Use HOME environment variable for where to store files, instead of assuming ~
+
+# 0.3.0
+
+ * Renamed 'link' to 'symlink'
+ * Fixed conflict resolution when symlink destination exists and is a normal file
+
+# 0.2.0
 
  * Better support for recognizing git urls (thanks jacobat!)
 	 * if it looks like a github user/repo, do that
@@ -12,6 +121,6 @@
  * Fixed linking, which tries to exclude . and .. from the list of files to
  link (thanks Martinos!)
 
- # 0.1.0
+# 0.1.0
 
  * Initial release

Gemfile

@@ -1,16 +1,36 @@
+source 'https://rubygems.org'
+
+this_ruby = Gem::Version.new(RUBY_VERSION)
+ruby_230 = Gem::Version.new('2.3.0')
+
 # Add dependencies required to use your gem here.
-group :runtime do
+gem 'thor', '>= 0.14.0'
-  #gem 'bundler', '>= 0.9.5'
-  gem "thor"
-end
 
 # Add dependencies to develop your gem here.
 # Include everything needed to run rake, tests, features, etc.
 group :development do
-  gem "rake"
+  gem 'capture-output', '~> 1.0.0'
-  gem "rspec", ">= 1.2.9"
+  gem 'coveralls', require: false
-  gem "bundler", ">= 0.9.5"
+  gem 'guard'
-  gem "jeweler", ">= 1.4.0"
+  gem 'guard-rspec'
-  gem "rcov", ">= 0"
+  gem 'jeweler', '>= 1.6.2', '< 2.2' if this_ruby < ruby_230
-  gem "devver-construct"
+  gem 'jeweler', '>= 1.6.2' if this_ruby >= ruby_230
+  gem 'rake', '>= 0.8.7'
+  gem 'rb-readline', '~> 0.5.0'
+  gem 'rspec', '~> 3.5.0'
+  gem 'rubocop'
+  gem 'test_construct'
+
+  install_if -> { RUBY_PLATFORM =~ /linux|freebsd|openbsd|sunos|solaris/ } do
+    gem 'libnotify'
+  end
+
+  install_if -> { RUBY_PLATFORM =~ /darwin/ } do
+    gem 'terminal-notifier-guard', '~> 1.7.0'
+  end
+
+  install_if -> { this_ruby < ruby_230 } do
+    gem 'listen', '< 3'
+    gem 'rack', '~> 2.0.6'
+  end
 end

Guardfile

@@ -0,0 +1,6 @@
+guard :rspec, :cmd => 'bundle exec rspec' do
+  watch(%r{^spec/.+_spec\.rb$})
+  watch(%r{^lib/(.+)\.rb$})     { |m| "spec/#{m[1]}_spec.rb" }
+  watch(%r{^lib/homesick/.*\.rb}) { "spec" }
+  watch('spec/spec_helper.rb')  { "spec" }
+end

README.md

@@ -0,0 +1,228 @@
+# homesick
+
+[![Gem Version](https://badge.fury.io/rb/homesick.svg)](http://badge.fury.io/rb/homesick)
+[![Build Status](https://travis-ci.org/technicalpickles/homesick.svg?branch=master)](https://travis-ci.org/technicalpickles/homesick)
+[![Dependency Status](https://gemnasium.com/technicalpickles/homesick.svg)](https://gemnasium.com/technicalpickles/homesick)
+[![Coverage Status](https://coveralls.io/repos/technicalpickles/homesick/badge.png)](https://coveralls.io/r/technicalpickles/homesick)
+[![Code Climate](https://codeclimate.com/github/technicalpickles/homesick.svg)](https://codeclimate.com/github/technicalpickles/homesick)
+[![Gitter chat](https://badges.gitter.im/technicalpickles/homesick.svg)](https://gitter.im/technicalpickles/homesick)
+
+Your home directory is your castle. Don't leave your dotfiles behind.
+
+Homesick is sorta like [rip](http://github.com/defunkt/rip), but for dotfiles. It uses git to clone a repository containing dotfiles, and saves them in `~/.homesick`. It then allows you to symlink all the dotfiles into place with a single command.
+
+We call a repository that is compatible with homesick to be a 'castle'. To act as a castle, a repository must be organized like so:
+
+- Contains a 'home' directory
+- 'home' contains any number of files and directories that begin with '.'
+
+To get started, install homesick first:
+
+    gem install homesick
+
+Next, you use the homesick command to clone a castle:
+
+    homesick clone git://github.com/technicalpickles/pickled-vim.git
+
+Alternatively, if it's on github, there's a slightly shorter way:
+
+    homesick clone technicalpickles/pickled-vim
+
+With the castle cloned, you can now link its contents into your home dir:
+
+    homesick link pickled-vim
+
+You can remove symlinks anytime when you don't need them anymore
+
+    homesick unlink pickled-vim
+
+If you need to add further configuration steps you can add these in a file called '.homesickrc' in the root of a castle. Once you've cloned a castle with a .homesickrc run the configuration with:
+
+    homesick rc CASTLE
+
+The contents of the .homesickrc file must be valid Ruby code as the file will be executed with Ruby's eval construct. The .homesickrc is also passed the current homesick object during its execution and this is available within the .homesickrc file as the 'self' variable. As the rc operation can be destructive the command normally asks for confirmation before proceeding. You can bypass this by passing the '--force' option, for example `homesick rc --force CASTLE`.
+
+If you're not sure what castles you have around, you can easily list them:
+
+    homesick list
+
+To pull your castle (or all castles):
+
+    homesick pull --all|CASTLE
+
+To commit your castle's changes:
+
+    homesick commit CASTLE
+
+To push your castle:
+
+    homesick push CASTLE
+
+To open a terminal in the root of a castle:
+
+    homesick cd CASTLE
+
+To open your default editor in the root of a castle (the $EDITOR environment variable must be set):
+
+    homesick open CASTLE
+
+To execute a shell command inside the root directory of a given castle:
+
+    homesick exec CASTLE COMMAND
+
+To execute a shell command inside the root directory of every cloned castle:
+
+    homesick exec_all COMMAND
+
+Not sure what else homesick has up its sleeve? There's always the built in help:
+
+    homesick help
+
+If you ever want to see what version of homesick you have type:
+
+    homesick version|-v|--version
+
+## Docker Behavior Validation (Ruby vs Go)
+
+To preserve behavior while migrating from Ruby to Go, this repository includes a containerized behavior suite that runs Homesick commands in a clean environment and validates filesystem and git outcomes.
+
+The suite creates a dedicated git repository inside the container to act as a test castle fixture, then validates behavior for:
+
+- clone
+- link / unlink
+- track
+- list / show_path
+- status / diff
+- version
+
+Run against the current Ruby implementation:
+
+    ./script/run-behavior-suite-docker.sh
+
+Show full command output (including internal Homesick status lines) when needed:
+
+    ./script/run-behavior-suite-docker.sh --verbose
+
+This runner now builds an Alpine-based container and installs runtime dependencies with `apk`, so behavior validation is not tied to a Ruby base image.
+
+Run against a future Go binary (example path):
+
+    HOMESICK_CMD="/workspace/dist/homesick" ./script/run-behavior-suite-docker.sh
+
+The command under test is controlled with the `HOMESICK_CMD` environment variable. By running the same suite for both implementations, you can verify parity at the behavior level.
+
+## Go Scaffold
+
+Initial Go scaffolding now lives under [cmd/homesick](cmd/homesick) and [internal/homesick](internal/homesick).
+
+Build the Go binary:
+
+    just go-build
+
+Run behavior validation against the Go binary:
+
+    HOMESICK_CMD="/workspace/dist/homesick-go" just behavior-go
+
+At this stage, the Go implementation includes a subset of commands (`clone`, `list`, `show_path`, `status`, `diff`, `version`) and intentionally reports clear errors for commands that are not ported yet.
+
+## .homesick_subdir
+
+`homesick link` basically makes symlink to only first depth in `castle/home`. If you want to link nested files/directories, please use .homesick_subdir.
+
+For example, when you have castle like this:
+
+    castle/home
+    `-- .config
+        `-- fooapp
+            |-- config1
+            |-- config2
+            `-- config3
+
+and have home like this:
+
+    $ tree -a
+    ~
+    |-- .config
+    |   `-- barapp
+    |         |-- config1
+    |         |-- config2
+    |         `-- config3
+    `-- .emacs.d
+        |-- elisp
+        `-- inits
+
+You may want to symlink only to `castle/home/.config/fooapp` instead of `castle/home/.config` because you already have `~/.config/barapp`. In this case, you can use .homesick_subdir. Please write "directories you want to look up sub directories (instead of just first depth)" in this file.
+
+castle/.homesick_subdir
+
+    .config
+
+and run `homesick link CASTLE`. The result is:
+
+    ~
+    |-- .config
+    |   |-- barapp
+    |   |     |-- config1
+    |   |     |-- config2
+    |   |     `-- config3
+    |   `-- fooapp        -> castle/home/.config/fooapp
+    `-- .emacs.d
+        |-- elisp
+        `-- inits
+
+Or `homesick track NESTED_FILE CASTLE` adds a line automatically. For example:
+
+    homesick track .emacs.d/elisp castle
+
+castle/.homesick_subdir
+
+    .config
+    .emacs.d
+
+home directory
+
+    ~
+    |-- .config
+    |   |-- barapp
+    |   |     |-- config1
+    |   |     |-- config2
+    |   |     `-- config3
+    |   `-- fooapp        -> castle/home/.config/fooapp
+    `-- .emacs.d
+        |-- elisp         -> castle/home/.emacs.d/elisp
+        `-- inits
+
+and castle
+
+    castle/home
+    |-- .config
+    |   `-- fooapp
+    |       |-- config1
+    |       |-- config2
+    |      `-- config3
+    `-- .emacs.d
+        `-- elisp
+
+## Supported Ruby Versions
+
+Homesick is tested on the following Ruby versions:
+
+- 2.2.6
+- 2.3.3
+- 2.4.0
+
+## Note on Patches/Pull Requests
+
+- Fork the project.
+- Make your feature addition or bug fix.
+- Add tests for it. This is important so I don't break it in a future version unintentionally.
+- Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
+- Send me a pull request. Bonus points for topic branches.
+
+## Need homesick without the ruby dependency?
+
+Check out [homeshick](https://github.com/andsens/homeshick).
+
+## Copyright
+
+Copyright (c) 2010 Joshua Nichols. See LICENSE for details.

README.rdoc

@@ -1,43 +0,0 @@
-= homesick
-
-A man's home (directory) is his castle, so don't leave home with out it.
-
-Homesick is sorta like rip, but for dotfiles. It uses git to clone a repository containing dotfiles, and saves them in ~/.homesick. It then allows you to symlink all the dotfiles into place with a single command.
-
-We call a repository that is compatible with homesick to be a 'castle'. To act as a castle, a repository must be organized like so:
-
-* Contains a 'home' directory
-* 'home' contains any number of files and directories that begin with '.'
-* Optionally has a README file
-
-To get started, install homesick first:
-
-    gem install homesick
-
-Next, you use the homesick command to clone a castle:
-
-    homesick clone git://github.com/technicalpickles/pickled-vim.git
-
-Alternatively, if it's on github, there's a slightly shorter way:
-
-    homesick clone technicalpickles/pickled-vim
-
-With the castle cloned, you can now link its contents into your home dir:
-
-    homesick link pickled-vim
-
-If you're not sure what castles you have around, you can easily list them:
-
-    homesick list
-
-== Note on Patches/Pull Requests
- 
-* Fork the project.
-* Make your feature addition or bug fix.
-* Add tests for it. This is important so I don't break it in a future version unintentionally.
-* Commit, do not mess with rakefile, version, or history.  (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
-* Send me a pull request. Bonus points for topic branches.
-
-== Copyright
-
-Copyright (c) 2010 Joshua Nichols. See LICENSE for details.

Rakefile

@@ -1,7 +1,8 @@
 require 'rubygems'
 require 'bundler'
+require_relative 'lib/homesick/version'
 begin
-  Bundler.setup(:runtime, :development)
+  Bundler.setup(:default, :development)
 rescue Bundler::BundlerError => e
   $stderr.puts e.message
   $stderr.puts "Run `bundle install` to install missing gems"
@@ -12,17 +13,19 @@ require 'rake'
 require 'jeweler'
 Jeweler::Tasks.new do |gem|
   gem.name = "homesick"
-  gem.summary = %Q{A man's home is his castle. Never leave your dotfiles behind.}
+  gem.summary = %Q{Your home directory is your castle. Don't leave your dotfiles behind.}
   gem.description = %Q{
-    A man’s home (directory) is his castle, so don’t leave home with out it.
+    Your home directory is your castle. Don't leave your dotfiles behind.
+    
 
     Homesick is sorta like rip, but for dotfiles. It uses git to clone a repository containing dotfiles, and saves them in ~/.homesick. It then allows you to symlink all the dotfiles into place with a single command. 
 
   }
-  gem.email = "josh@technicalpickles.com"
+  gem.email = ["josh@technicalpickles.com", "info@muratayusuke.com"]
   gem.homepage = "http://github.com/technicalpickles/homesick"
-  gem.authors = ["Joshua Nichols"]
+  gem.authors = ["Joshua Nichols", "Yusuke Murata"]
-  gem.version = "0.2.0"
+  gem.version = Homesick::Version::STRING
+  gem.license = "MIT"
   # Have dependencies? Add them to Gemfile
 
   # gem is a Gem::Specification... see http://www.rubygems.org/read/chapter/20 for additional settings
@@ -30,21 +33,30 @@ end
 Jeweler::GemcutterTasks.new
 
 
-require 'spec/rake/spectask'
+require 'rspec/core/rake_task'
-Spec::Rake::SpecTask.new(:spec) do |spec|
+RSpec::Core::RakeTask.new(:spec) do |spec|
-  spec.libs << 'lib' << 'spec'
+  spec.pattern = FileList['spec/**/*_spec.rb']
-  spec.spec_files = FileList['spec/**/*_spec.rb']
 end
 
-Spec::Rake::SpecTask.new(:rcov) do |spec|
+RSpec::Core::RakeTask.new(:rcov) do |spec|
-  spec.libs << 'lib' << 'spec'
   spec.pattern = 'spec/**/*_spec.rb'
   spec.rcov = true
 end
 
-task :default => :spec
+task :rubocop do
+  if RUBY_VERSION >= '1.9.2'
+    system('rubocop')
+  end
+end
 
-require 'rake/rdoctask'
+task :test do
+  Rake::Task['spec'].execute
+  Rake::Task['rubocop'].execute
+end
+
+task :default => :test
+
+require 'rdoc/task'
 Rake::RDocTask.new do |rdoc|
   version = File.exist?('VERSION') ? File.read('VERSION') : ""
 

bin/homesick

@@ -2,8 +2,8 @@
 
 require 'pathname'
 lib = Pathname.new(__FILE__).dirname.join('..', 'lib').expand_path
-$LOAD_PATH.unshift.unshift lib.to_s unless $LOAD_PATH.include?(lib.to_s)
+$LOAD_PATH.unshift lib.to_s
 
 require 'homesick'
 
-Homesick.start
+Homesick::CLI.start

cmd/homesick/main.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"os"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/cli"
+)
+
+func main() {
+	exitCode := cli.Run(os.Args[1:], os.Stdout, os.Stderr)
+	os.Exit(exitCode)
+}

docker/behavior/Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3.21
+
+RUN apk add --no-cache \
+    bash \
+    ca-certificates \
+    git \
+    ruby \
+    ruby-thor
+
+WORKDIR /workspace
+COPY . /workspace
+
+ENTRYPOINT ["/workspace/test/behavior/behavior_suite.sh"]

go.mod

@@ -0,0 +1,34 @@
+module git.hrafn.xyz/aether/gosick
+
+go 1.26
+
+toolchain go1.26.1
+
+require github.com/stretchr/testify v1.10.0
+
+require github.com/go-git/go-git/v5 v5.14.0
+
+require (
+	dario.cat/mergo v1.0.0 // indirect
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/ProtonMail/go-crypto v1.1.5 // indirect
+	github.com/cloudflare/circl v1.6.0 // indirect
+	github.com/cyphar/filepath-securejoin v0.4.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emirpasic/gods v1.18.1 // indirect
+	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
+	github.com/go-git/go-billy/v5 v5.6.2 // indirect
+	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
+	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
+	github.com/kevinburke/ssh_config v1.2.0 // indirect
+	github.com/pjbgf/sha1cd v0.3.2 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/sergi/go-diff v1.3.2-0.20230802210424-5b0b94c5c0d3 // indirect
+	github.com/skeema/knownhosts v1.3.1 // indirect
+	github.com/xanzy/ssh-agent v0.3.3 // indirect
+	golang.org/x/crypto v0.35.0 // indirect
+	golang.org/x/net v0.35.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+	gopkg.in/warnings.v0 v0.1.2 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,102 @@
+dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
+dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
+github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
+github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
+github.com/ProtonMail/go-crypto v1.1.5 h1:eoAQfK2dwL+tFSFpr7TbOaPNUbPiJj4fLYwwGE1FQO4=
+github.com/ProtonMail/go-crypto v1.1.5/go.mod h1:rA3QumHc/FZ8pAHreoekgiAbzpNsfQAosU5td4SnOrE=
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homesick.gemspec

@@ -1,64 +1,105 @@
 # Generated by jeweler
 # DO NOT EDIT THIS FILE DIRECTLY
-# Instead, edit Jeweler::Tasks in Rakefile, and run the gemspec command
+# Instead, edit Jeweler::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
+# stub: homesick 1.1.6 ruby lib
 
 Gem::Specification.new do |s|
-  s.name = %q{homesick}
+  s.name = "homesick".freeze
-  s.version = "0.2.0"
+  s.version = "1.1.6"
 
-  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
-  s.authors = ["Joshua Nichols"]
+  s.require_paths = ["lib".freeze]
-  s.date = %q{2010-03-19}
+  s.authors = ["Joshua Nichols".freeze, "Yusuke Murata".freeze]
-  s.default_executable = %q{homesick}
+  s.date = "2017-12-20"
-  s.description = %q{
+  s.description = "\n    Your home directory is your castle. Don't leave your dotfiles behind.\n    \n\n    Homesick is sorta like rip, but for dotfiles. It uses git to clone a repository containing dotfiles, and saves them in ~/.homesick. It then allows you to symlink all the dotfiles into place with a single command. \n\n  ".freeze
-    A man’s home (directory) is his castle, so don’t leave home with out it.
+  s.email = ["josh@technicalpickles.com".freeze, "info@muratayusuke.com".freeze]
-
+  s.executables = ["homesick".freeze]
-    Homesick is sorta like rip, but for dotfiles. It uses git to clone a repository containing dotfiles, and saves them in ~/.homesick. It then allows you to symlink all the dotfiles into place with a single command. 
-
-  }
-  s.email = %q{josh@technicalpickles.com}
-  s.executables = ["homesick"]
   s.extra_rdoc_files = [
     "ChangeLog.markdown",
-     "LICENSE",
+    "LICENSE",
-     "README.rdoc"
+    "README.markdown"
   ]
   s.files = [
     ".document",
-     ".gitignore",
+    ".rspec",
-     "ChangeLog.markdown",
+    ".rubocop.yml",
-     "Gemfile",
+    ".travis.yml",
-     "LICENSE",
+    "ChangeLog.markdown",
-     "README.rdoc",
+    "Gemfile",
-     "Rakefile",
+    "Guardfile",
-     "bin/homesick",
+    "LICENSE",
-     "homesick.gemspec",
+    "README.markdown",
-     "lib/homesick.rb",
+    "Rakefile",
-     "lib/homesick/actions.rb",
+    "bin/homesick",
-     "lib/homesick/shell.rb",
+    "homesick.gemspec",
-     "spec/homesick/homesick_spec.rb",
+    "lib/homesick.rb",
-     "spec/spec.opts",
+    "lib/homesick/actions/file_actions.rb",
-     "spec/spec_helper.rb"
+    "lib/homesick/actions/git_actions.rb",
-  ]
+    "lib/homesick/cli.rb",
-  s.homepage = %q{http://github.com/technicalpickles/homesick}
+    "lib/homesick/utils.rb",
-  s.rdoc_options = ["--charset=UTF-8"]
+    "lib/homesick/version.rb",
-  s.require_paths = ["lib"]
+    "spec/homesick_cli_spec.rb",
-  s.rubygems_version = %q{1.3.6}
+    "spec/spec.opts",
-  s.summary = %q{A man's home is his castle. Never leave your dotfiles behind.}
+    "spec/spec_helper.rb"
-  s.test_files = [
-    "spec/homesick/homesick_spec.rb",
-     "spec/spec_helper.rb"
   ]
+  s.homepage = "http://github.com/technicalpickles/homesick".freeze
+  s.licenses = ["MIT".freeze]
+  s.rubygems_version = "2.6.11".freeze
+  s.summary = "Your home directory is your castle. Don't leave your dotfiles behind.".freeze
 
   if s.respond_to? :specification_version then
-    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
+    s.specification_version = 4
-    s.specification_version = 3
 
-    if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then
+    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+      s.add_runtime_dependency(%q<thor>.freeze, [">= 0.14.0"])
+      s.add_development_dependency(%q<capture-output>.freeze, ["~> 1.0.0"])
+      s.add_development_dependency(%q<coveralls>.freeze, [">= 0"])
+      s.add_development_dependency(%q<guard>.freeze, [">= 0"])
+      s.add_development_dependency(%q<guard-rspec>.freeze, [">= 0"])
+      s.add_development_dependency(%q<jeweler>.freeze, [">= 1.6.2"])
+      s.add_development_dependency(%q<rake>.freeze, [">= 0.8.7"])
+      s.add_development_dependency(%q<rb-readline>.freeze, ["~> 0.5.0"])
+      s.add_development_dependency(%q<rspec>.freeze, ["~> 3.5.0"])
+      s.add_development_dependency(%q<rubocop>.freeze, [">= 0"])
+      s.add_development_dependency(%q<test_construct>.freeze, [">= 0"])
+      s.add_development_dependency(%q<libnotify>.freeze, [">= 0"])
+      s.add_development_dependency(%q<terminal-notifier-guard>.freeze, ["~> 1.7.0"])
+      s.add_development_dependency(%q<listen>.freeze, ["< 3"])
+      s.add_development_dependency(%q<rack>.freeze, ["< 2"])
     else
+      s.add_dependency(%q<thor>.freeze, [">= 0.14.0"])
+      s.add_dependency(%q<capture-output>.freeze, ["~> 1.0.0"])
+      s.add_dependency(%q<coveralls>.freeze, [">= 0"])
+      s.add_dependency(%q<guard>.freeze, [">= 0"])
+      s.add_dependency(%q<guard-rspec>.freeze, [">= 0"])
+      s.add_dependency(%q<jeweler>.freeze, [">= 1.6.2"])
+      s.add_dependency(%q<rake>.freeze, [">= 0.8.7"])
+      s.add_dependency(%q<rb-readline>.freeze, ["~> 0.5.0"])
+      s.add_dependency(%q<rspec>.freeze, ["~> 3.5.0"])
+      s.add_dependency(%q<rubocop>.freeze, [">= 0"])
+      s.add_dependency(%q<test_construct>.freeze, [">= 0"])
+      s.add_dependency(%q<libnotify>.freeze, [">= 0"])
+      s.add_dependency(%q<terminal-notifier-guard>.freeze, ["~> 1.7.0"])
+      s.add_dependency(%q<listen>.freeze, ["< 3"])
+      s.add_dependency(%q<rack>.freeze, ["< 2"])
     end
   else
+    s.add_dependency(%q<thor>.freeze, [">= 0.14.0"])
+    s.add_dependency(%q<capture-output>.freeze, ["~> 1.0.0"])
+    s.add_dependency(%q<coveralls>.freeze, [">= 0"])
+    s.add_dependency(%q<guard>.freeze, [">= 0"])
+    s.add_dependency(%q<guard-rspec>.freeze, [">= 0"])
+    s.add_dependency(%q<jeweler>.freeze, [">= 1.6.2"])
+    s.add_dependency(%q<rake>.freeze, [">= 0.8.7"])
+    s.add_dependency(%q<rb-readline>.freeze, ["~> 0.5.0"])
+    s.add_dependency(%q<rspec>.freeze, ["~> 3.5.0"])
+    s.add_dependency(%q<rubocop>.freeze, [">= 0"])
+    s.add_dependency(%q<test_construct>.freeze, [">= 0"])
+    s.add_dependency(%q<libnotify>.freeze, [">= 0"])
+    s.add_dependency(%q<terminal-notifier-guard>.freeze, ["~> 1.7.0"])
+    s.add_dependency(%q<listen>.freeze, ["< 3"])
+    s.add_dependency(%q<rack>.freeze, ["< 2"])
   end
 end
 

internal/homesick/cli/cli.go

@@ -0,0 +1,129 @@
+package cli
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/core"
+	"git.hrafn.xyz/aether/gosick/internal/homesick/version"
+)
+
+func Run(args []string, stdout io.Writer, stderr io.Writer) int {
+	app, err := core.New(stdout, stderr)
+	if err != nil {
+		_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+		return 1
+	}
+
+	if len(args) == 0 {
+		printHelp(stdout)
+		return 0
+	}
+
+	command := args[0]
+	switch command {
+	case "-v", "--version", "version":
+		if err := app.Version(version.String); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "help", "--help", "-h":
+		printHelp(stdout)
+		return 0
+	case "clone":
+		if len(args) < 2 {
+			_, _ = fmt.Fprintln(stderr, "error: clone requires URI")
+			return 1
+		}
+		destination := ""
+		if len(args) > 2 {
+			destination = args[2]
+		}
+		if err := app.Clone(args[1], destination); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "list":
+		if err := app.List(); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "show_path":
+		castle := defaultCastle(args)
+		if err := app.ShowPath(castle); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "status":
+		castle := defaultCastle(args)
+		if err := app.Status(castle); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "diff":
+		castle := defaultCastle(args)
+		if err := app.Diff(castle); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "link":
+		castle := defaultCastle(args)
+		if err := app.LinkCastle(castle); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "unlink":
+		castle := defaultCastle(args)
+		if err := app.Unlink(castle); err != nil {
+			_, _ = fmt.Fprintf(stderr, "error: %v\n", err)
+			return 1
+		}
+		return 0
+	case "track", "pull", "push", "commit", "destroy", "cd", "open", "exec", "exec_all", "rc", "generate":
+		_, _ = fmt.Fprintf(stderr, "error: %s is not implemented in Go yet\n", command)
+		return 2
+	default:
+		_, _ = fmt.Fprintf(stderr, "error: unknown command %q\n\n", command)
+		printHelp(stderr)
+		return 1
+	}
+}
+
+func defaultCastle(args []string) string {
+	if len(args) > 1 && strings.TrimSpace(args[1]) != "" {
+		return args[1]
+	}
+	return "dotfiles"
+}
+
+func printHelp(w io.Writer) {
+	_, _ = fmt.Fprintln(w, "homesick (Go scaffold)")
+	_, _ = fmt.Fprintln(w, "")
+	_, _ = fmt.Fprintln(w, "Implemented commands:")
+	_, _ = fmt.Fprintln(w, "  clone URI [CASTLE_NAME]")
+	_, _ = fmt.Fprintln(w, "  list")
+	_, _ = fmt.Fprintln(w, "  show_path [CASTLE]")
+	_, _ = fmt.Fprintln(w, "  status [CASTLE]")
+	_, _ = fmt.Fprintln(w, "  diff [CASTLE]")
+	_, _ = fmt.Fprintln(w, "  link [CASTLE]")
+	_, _ = fmt.Fprintln(w, "  unlink [CASTLE]")
+	_, _ = fmt.Fprintln(w, "  version | -v | --version")
+	_, _ = fmt.Fprintln(w, "")
+	_, _ = fmt.Fprintln(w, "Not implemented yet:")
+	_, _ = fmt.Fprintln(w, "  track, pull, push, commit, destroy, cd, open, exec, exec_all, rc, generate")
+	_, _ = fmt.Fprintln(w, "")
+	_, _ = fmt.Fprintln(w, "Build: go build -o dist/homesick-go ./cmd/homesick")
+}
+
+func init() {
+	_ = os.Setenv("GIT_TERMINAL_PROMPT", "0")
+}

internal/homesick/core/clone_test.go

@@ -0,0 +1,103 @@
+package core_test
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/core"
+	git "github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/config"
+	"github.com/go-git/go-git/v5/plumbing/object"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type CloneSuite struct {
+	suite.Suite
+	tmpDir   string
+	homeDir  string
+	reposDir string
+	app      *core.App
+}
+
+func TestCloneSuite(t *testing.T) {
+	suite.Run(t, new(CloneSuite))
+}
+
+func (s *CloneSuite) SetupTest() {
+	s.tmpDir = s.T().TempDir()
+	s.homeDir = filepath.Join(s.tmpDir, "home")
+	s.reposDir = filepath.Join(s.homeDir, ".homesick", "repos")
+	require.NoError(s.T(), os.MkdirAll(s.reposDir, 0o755))
+
+	s.app = &core.App{
+		HomeDir:  s.homeDir,
+		ReposDir: s.reposDir,
+		Stdout:   io.Discard,
+		Stderr:   io.Discard,
+	}
+}
+
+func (s *CloneSuite) createBareRemote(name string) string {
+	remotePath := filepath.Join(s.tmpDir, name+".git")
+	_, err := git.PlainInit(remotePath, true)
+	require.NoError(s.T(), err)
+
+	workPath := filepath.Join(s.tmpDir, name+"-work")
+	repo, err := git.PlainInit(workPath, false)
+	require.NoError(s.T(), err)
+
+	castleFile := filepath.Join(workPath, "home", ".vimrc")
+	require.NoError(s.T(), os.MkdirAll(filepath.Dir(castleFile), 0o755))
+	require.NoError(s.T(), os.WriteFile(castleFile, []byte("set number\n"), 0o644))
+
+	wt, err := repo.Worktree()
+	require.NoError(s.T(), err)
+	_, err = wt.Add("home/.vimrc")
+	require.NoError(s.T(), err)
+
+	_, err = wt.Commit("initial", &git.CommitOptions{Author: &object.Signature{
+		Name:  "Behavior Test",
+		Email: "behavior@test.local",
+		When:  time.Now(),
+	}})
+	require.NoError(s.T(), err)
+
+	_, err = repo.CreateRemote(&config.RemoteConfig{Name: "origin", URLs: []string{remotePath}})
+	require.NoError(s.T(), err)
+	require.NoError(s.T(), repo.Push(&git.PushOptions{RemoteName: "origin"}))
+
+	return remotePath
+}
+
+func (s *CloneSuite) TestClone_FileURLWorks() {
+	remotePath := s.createBareRemote("castle")
+
+	err := s.app.Clone("file://"+remotePath, "parity-castle")
+	require.NoError(s.T(), err)
+	require.FileExists(s.T(), filepath.Join(s.reposDir, "parity-castle", "home", ".vimrc"))
+}
+
+func (s *CloneSuite) TestClone_DerivesDestinationWhenMissing() {
+	remotePath := s.createBareRemote("dotfiles")
+
+	err := s.app.Clone("file://"+remotePath, "")
+	require.NoError(s.T(), err)
+	require.DirExists(s.T(), filepath.Join(s.reposDir, "dotfiles"))
+}
+
+func (s *CloneSuite) TestClone_LocalPathSymlinksDirectory() {
+	localCastle := filepath.Join(s.tmpDir, "local-castle")
+	require.NoError(s.T(), os.MkdirAll(filepath.Join(localCastle, "home"), 0o755))
+
+	err := s.app.Clone(localCastle, "")
+	require.NoError(s.T(), err)
+
+	destination := filepath.Join(s.reposDir, "local-castle")
+	info, err := os.Lstat(destination)
+	require.NoError(s.T(), err)
+	require.True(s.T(), info.Mode()&os.ModeSymlink != 0)
+}

internal/homesick/core/core.go

@@ -0,0 +1,440 @@
+package core
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	git "github.com/go-git/go-git/v5"
+)
+
+type App struct {
+	HomeDir  string
+	ReposDir string
+	Stdout   io.Writer
+	Stderr   io.Writer
+	Verbose  bool
+	Force    bool
+}
+
+func New(stdout io.Writer, stderr io.Writer) (*App, error) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return nil, fmt.Errorf("resolve home directory: %w", err)
+	}
+
+	return &App{
+		HomeDir:  home,
+		ReposDir: filepath.Join(home, ".homesick", "repos"),
+		Stdout:   stdout,
+		Stderr:   stderr,
+	}, nil
+}
+
+func (a *App) Version(version string) error {
+	_, err := fmt.Fprintln(a.Stdout, version)
+	return err
+}
+
+func (a *App) ShowPath(castle string) error {
+	_, err := fmt.Fprintln(a.Stdout, filepath.Join(a.ReposDir, castle))
+	return err
+}
+
+func (a *App) Clone(uri string, destination string) error {
+	if uri == "" {
+		return errors.New("clone requires URI")
+	}
+
+	if destination == "" {
+		destination = deriveDestination(uri)
+	}
+	if destination == "" {
+		return fmt.Errorf("unable to derive destination from uri %q", uri)
+	}
+
+	if err := os.MkdirAll(a.ReposDir, 0o755); err != nil {
+		return fmt.Errorf("create repos directory: %w", err)
+	}
+
+	destinationPath := filepath.Join(a.ReposDir, destination)
+
+	if fi, err := os.Stat(uri); err == nil && fi.IsDir() {
+		if err := os.Symlink(uri, destinationPath); err != nil {
+			return fmt.Errorf("symlink local castle: %w", err)
+		}
+		return nil
+	}
+
+	_, err := git.PlainClone(destinationPath, false, &git.CloneOptions{
+		URL:               uri,
+		RecurseSubmodules: git.DefaultSubmoduleRecursionDepth,
+	})
+	if err != nil {
+		return fmt.Errorf("clone %q into %q failed: %w", uri, destinationPath, err)
+	}
+
+	return nil
+}
+
+func (a *App) List() error {
+	if err := os.MkdirAll(a.ReposDir, 0o755); err != nil {
+		return err
+	}
+
+	var castles []string
+	err := filepath.WalkDir(a.ReposDir, func(path string, d fs.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return walkErr
+		}
+		if !d.IsDir() || d.Name() != ".git" {
+			return nil
+		}
+
+		castleRoot := filepath.Dir(path)
+		rel, err := filepath.Rel(a.ReposDir, castleRoot)
+		if err != nil {
+			return err
+		}
+		castles = append(castles, rel)
+		return filepath.SkipDir
+	})
+	if err != nil {
+		return err
+	}
+
+	sort.Strings(castles)
+	for _, castle := range castles {
+		castleRoot := filepath.Join(a.ReposDir, castle)
+		remote, remoteErr := gitOutput(castleRoot, "config", "remote.origin.url")
+		if remoteErr != nil {
+			remote = ""
+		}
+		_, writeErr := fmt.Fprintf(a.Stdout, "%s %s\n", castle, strings.TrimSpace(remote))
+		if writeErr != nil {
+			return writeErr
+		}
+	}
+
+	return nil
+}
+
+func (a *App) Status(castle string) error {
+	return runGit(filepath.Join(a.ReposDir, castle), "status")
+}
+
+func (a *App) Diff(castle string) error {
+	return runGit(filepath.Join(a.ReposDir, castle), "diff")
+}
+
+func (a *App) Link(castle string) error {
+	if strings.TrimSpace(castle) == "" {
+		castle = "dotfiles"
+	}
+	return a.LinkCastle(castle)
+}
+
+func (a *App) LinkCastle(castle string) error {
+	castleHome := filepath.Join(a.ReposDir, castle, "home")
+	info, err := os.Stat(castleHome)
+	if err != nil || !info.IsDir() {
+		return fmt.Errorf("could not symlink %s, expected %s to exist and contain dotfiles", castle, castleHome)
+	}
+
+	subdirs, err := readSubdirs(filepath.Join(a.ReposDir, castle, ".homesick_subdir"))
+	if err != nil {
+		return err
+	}
+
+	if err := a.linkEach(castleHome, castleHome, subdirs); err != nil {
+		return err
+	}
+
+	for _, subdir := range subdirs {
+		base := filepath.Join(castleHome, subdir)
+		if _, err := os.Stat(base); err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				continue
+			}
+			return err
+		}
+
+		if err := a.linkEach(castleHome, base, subdirs); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (a *App) Unlink(castle string) error {
+	if strings.TrimSpace(castle) == "" {
+		castle = "dotfiles"
+	}
+	return a.UnlinkCastle(castle)
+}
+
+func (a *App) UnlinkCastle(castle string) error {
+	castleHome := filepath.Join(a.ReposDir, castle, "home")
+	info, err := os.Stat(castleHome)
+	if err != nil || !info.IsDir() {
+		return fmt.Errorf("could not symlink %s, expected %s to exist and contain dotfiles", castle, castleHome)
+	}
+
+	subdirs, err := readSubdirs(filepath.Join(a.ReposDir, castle, ".homesick_subdir"))
+	if err != nil {
+		return err
+	}
+
+	if err := a.unlinkEach(castleHome, castleHome, subdirs); err != nil {
+		return err
+	}
+
+	for _, subdir := range subdirs {
+		base := filepath.Join(castleHome, subdir)
+		if _, err := os.Stat(base); err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				continue
+			}
+			return err
+		}
+
+		if err := a.unlinkEach(castleHome, base, subdirs); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (a *App) Track(string, string) error {
+	return errors.New("track is not implemented in Go yet")
+}
+
+func (a *App) linkEach(castleHome string, baseDir string, subdirs []string) error {
+	entries, err := os.ReadDir(baseDir)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		name := entry.Name()
+		if name == "." || name == ".." {
+			continue
+		}
+
+		source := filepath.Join(baseDir, name)
+		ignore, err := matchesIgnoredDir(castleHome, source, subdirs)
+		if err != nil {
+			return err
+		}
+		if ignore {
+			continue
+		}
+
+		relDir, err := filepath.Rel(castleHome, baseDir)
+		if err != nil {
+			return err
+		}
+
+		destination := filepath.Join(a.HomeDir, relDir, name)
+		if relDir == "." {
+			destination = filepath.Join(a.HomeDir, name)
+		}
+
+		if err := a.linkPath(source, destination); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (a *App) unlinkEach(castleHome string, baseDir string, subdirs []string) error {
+	entries, err := os.ReadDir(baseDir)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		name := entry.Name()
+		if name == "." || name == ".." {
+			continue
+		}
+
+		source := filepath.Join(baseDir, name)
+		ignore, err := matchesIgnoredDir(castleHome, source, subdirs)
+		if err != nil {
+			return err
+		}
+		if ignore {
+			continue
+		}
+
+		relDir, err := filepath.Rel(castleHome, baseDir)
+		if err != nil {
+			return err
+		}
+
+		destination := filepath.Join(a.HomeDir, relDir, name)
+		if relDir == "." {
+			destination = filepath.Join(a.HomeDir, name)
+		}
+
+		if err := unlinkPath(destination); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func unlinkPath(destination string) error {
+	info, err := os.Lstat(destination)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+
+	if info.Mode()&os.ModeSymlink == 0 {
+		return nil
+	}
+
+	return os.Remove(destination)
+}
+
+func (a *App) linkPath(source string, destination string) error {
+	absSource, err := filepath.Abs(source)
+	if err != nil {
+		return err
+	}
+
+	if err := os.MkdirAll(filepath.Dir(destination), 0o755); err != nil {
+		return err
+	}
+
+	info, err := os.Lstat(destination)
+	if err == nil {
+		if info.Mode()&os.ModeSymlink != 0 {
+			target, readErr := os.Readlink(destination)
+			if readErr == nil && target == absSource {
+				return nil
+			}
+		}
+
+		if !a.Force {
+			return fmt.Errorf("%s exists", destination)
+		}
+
+		if rmErr := os.RemoveAll(destination); rmErr != nil {
+			return rmErr
+		}
+	} else if !errors.Is(err, os.ErrNotExist) {
+		return err
+	}
+
+	if err := os.Symlink(absSource, destination); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func readSubdirs(path string) ([]string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return []string{}, nil
+		}
+		return nil, err
+	}
+
+	lines := strings.Split(string(data), "\n")
+	result := make([]string, 0, len(lines))
+	for _, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		if trimmed == "" {
+			continue
+		}
+		result = append(result, filepath.Clean(trimmed))
+	}
+
+	return result, nil
+}
+
+func matchesIgnoredDir(castleHome string, candidate string, subdirs []string) (bool, error) {
+	absCandidate, err := filepath.Abs(candidate)
+	if err != nil {
+		return false, err
+	}
+
+	ignoreSet := map[string]struct{}{}
+	for _, subdir := range subdirs {
+		clean := filepath.Clean(subdir)
+		for clean != "." && clean != string(filepath.Separator) {
+			ignoreSet[filepath.Join(castleHome, clean)] = struct{}{}
+			next := filepath.Dir(clean)
+			if next == clean {
+				break
+			}
+			clean = next
+		}
+	}
+
+	_, ok := ignoreSet[absCandidate]
+	return ok, nil
+}
+
+func runGit(dir string, args ...string) error {
+	cmd := exec.Command("git", args...)
+	cmd.Dir = dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("git %s failed: %w", strings.Join(args, " "), err)
+	}
+	return nil
+}
+
+func gitOutput(dir string, args ...string) (string, error) {
+	cmd := exec.Command("git", args...)
+	cmd.Dir = dir
+	out, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+	return string(out), nil
+}
+
+func deriveDestination(uri string) string {
+	candidate := strings.TrimSpace(uri)
+	candidate = strings.TrimPrefix(candidate, "https://github.com/")
+	candidate = strings.TrimPrefix(candidate, "http://github.com/")
+	candidate = strings.TrimPrefix(candidate, "git://github.com/")
+
+	if strings.HasPrefix(candidate, "file://") {
+		candidate = strings.TrimPrefix(candidate, "file://")
+	}
+
+	candidate = strings.TrimSuffix(candidate, ".git")
+	candidate = strings.TrimSuffix(candidate, "/")
+	if candidate == "" {
+		return ""
+	}
+
+	parts := strings.Split(candidate, "/")
+	last := parts[len(parts)-1]
+	if strings.Contains(last, ":") {
+		a := strings.Split(last, ":")
+		last = a[len(a)-1]
+	}
+	return last
+}

internal/homesick/core/core_test.go

@@ -0,0 +1,24 @@
+package core
+
+import "testing"
+
+func TestDeriveDestination(t *testing.T) {
+	tests := []struct {
+		name string
+		uri  string
+		want string
+	}{
+		{name: "github short", uri: "technicalpickles/pickled-vim", want: "pickled-vim"},
+		{name: "https", uri: "https://github.com/technicalpickles/pickled-vim.git", want: "pickled-vim"},
+		{name: "git ssh", uri: "git@github.com:technicalpickles/pickled-vim.git", want: "pickled-vim"},
+		{name: "file", uri: "file:///tmp/dotfiles.git", want: "dotfiles"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := deriveDestination(tt.uri); got != tt.want {
+				t.Fatalf("deriveDestination(%q) = %q, want %q", tt.uri, got, tt.want)
+			}
+		})
+	}
+}

internal/homesick/core/link_test.go

@@ -0,0 +1,118 @@
+package core_test
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/core"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type LinkSuite struct {
+	suite.Suite
+	tmpDir   string
+	homeDir  string
+	reposDir string
+	app      *core.App
+}
+
+func TestLinkSuite(t *testing.T) {
+	suite.Run(t, new(LinkSuite))
+}
+
+func (s *LinkSuite) SetupTest() {
+	s.tmpDir = s.T().TempDir()
+	s.homeDir = filepath.Join(s.tmpDir, "home")
+	s.reposDir = filepath.Join(s.homeDir, ".homesick", "repos")
+
+	require.NoError(s.T(), os.MkdirAll(s.reposDir, 0o755))
+
+	s.app = &core.App{
+		HomeDir:  s.homeDir,
+		ReposDir: s.reposDir,
+		Stdout:   io.Discard,
+		Stderr:   io.Discard,
+	}
+}
+
+func (s *LinkSuite) createCastle(castle string) string {
+	castleHome := filepath.Join(s.reposDir, castle, "home")
+	require.NoError(s.T(), os.MkdirAll(castleHome, 0o755))
+	return castleHome
+}
+
+func (s *LinkSuite) writeFile(path string, content string) {
+	require.NoError(s.T(), os.MkdirAll(filepath.Dir(path), 0o755))
+	require.NoError(s.T(), os.WriteFile(path, []byte(content), 0o644))
+}
+
+func (s *LinkSuite) TestLink_SymlinksTopLevelFiles() {
+	castleHome := s.createCastle("glencairn")
+	dotfile := filepath.Join(castleHome, ".vimrc")
+	s.writeFile(dotfile, "set number\n")
+
+	err := s.app.Link("glencairn")
+	require.NoError(s.T(), err)
+
+	homePath := filepath.Join(s.homeDir, ".vimrc")
+	info, err := os.Lstat(homePath)
+	require.NoError(s.T(), err)
+	require.True(s.T(), info.Mode()&os.ModeSymlink != 0)
+
+	target, err := os.Readlink(homePath)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), dotfile, target)
+}
+
+func (s *LinkSuite) TestLink_RespectsHomesickSubdir() {
+	castleHome := s.createCastle("glencairn")
+	configDir := filepath.Join(castleHome, ".config")
+	appDir := filepath.Join(configDir, "myapp")
+	s.writeFile(filepath.Join(appDir, "config.toml"), "ok=true\n")
+	s.writeFile(filepath.Join(s.reposDir, "glencairn", ".homesick_subdir"), ".config\n")
+
+	err := s.app.Link("glencairn")
+	require.NoError(s.T(), err)
+
+	configInfo, err := os.Lstat(filepath.Join(s.homeDir, ".config"))
+	require.NoError(s.T(), err)
+	require.False(s.T(), configInfo.Mode()&os.ModeSymlink != 0)
+
+	homeApp := filepath.Join(s.homeDir, ".config", "myapp")
+	appInfo, err := os.Lstat(homeApp)
+	require.NoError(s.T(), err)
+	require.True(s.T(), appInfo.Mode()&os.ModeSymlink != 0)
+
+	target, err := os.Readlink(homeApp)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), appDir, target)
+}
+
+func (s *LinkSuite) TestLink_ForceReplacesExistingFile() {
+	castleHome := s.createCastle("glencairn")
+	dotfile := filepath.Join(castleHome, ".zshrc")
+	s.writeFile(dotfile, "export EDITOR=vim\n")
+	s.writeFile(filepath.Join(s.homeDir, ".zshrc"), "existing\n")
+
+	s.app.Force = true
+	err := s.app.Link("glencairn")
+	require.NoError(s.T(), err)
+
+	homePath := filepath.Join(s.homeDir, ".zshrc")
+	info, err := os.Lstat(homePath)
+	require.NoError(s.T(), err)
+	require.True(s.T(), info.Mode()&os.ModeSymlink != 0)
+}
+
+func (s *LinkSuite) TestLink_NoForceErrorsOnConflict() {
+	castleHome := s.createCastle("glencairn")
+	dotfile := filepath.Join(castleHome, ".gitconfig")
+	s.writeFile(dotfile, "[user]\n")
+	s.writeFile(filepath.Join(s.homeDir, ".gitconfig"), "local\n")
+
+	err := s.app.Link("glencairn")
+	require.Error(s.T(), err)
+}

internal/homesick/core/track_test.go

@@ -0,0 +1,101 @@
+package core_test
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/core"
+	git "github.com/go-git/go-git/v5"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type TrackSuite struct {
+	suite.Suite
+	tmpDir   string
+	homeDir  string
+	reposDir string
+	app      *core.App
+}
+
+//NB: this has nothing to do with jogging
+func TestTrackSuite(t *testing.T) {
+	suite.Run(t, new(TrackSuite))
+}
+
+func (s *TrackSuite) SetupTest() {
+	s.tmpDir = s.T().TempDir()
+	s.homeDir = filepath.Join(s.tmpDir, "home")
+	s.reposDir = filepath.Join(s.homeDir, ".homesick", "repos")
+	require.NoError(s.T(), os.MkdirAll(s.reposDir, 0o755))
+
+	s.app = &core.App{
+		HomeDir:  s.homeDir,
+		ReposDir: s.reposDir,
+		Stdout:   io.Discard,
+		Stderr:   io.Discard,
+	}
+}
+
+func (s *TrackSuite) createCastleRepo(castle string) string {
+	castleRoot := filepath.Join(s.reposDir, castle)
+	require.NoError(s.T(), os.MkdirAll(filepath.Join(castleRoot, "home"), 0o755))
+	_, err := git.PlainInit(castleRoot, false)
+	require.NoError(s.T(), err)
+	return castleRoot
+}
+
+func (s *TrackSuite) writeFile(path string, content string) {
+	require.NoError(s.T(), os.MkdirAll(filepath.Dir(path), 0o755))
+	require.NoError(s.T(), os.WriteFile(path, []byte(content), 0o644))
+}
+
+func (s *TrackSuite) TestTrack_AfterRelinkTracksFileAndUpdatesSubdir() {
+	castleRoot := s.createCastleRepo("parity-castle")
+	castleHome := filepath.Join(castleRoot, "home")
+
+	s.writeFile(filepath.Join(castleHome, ".vimrc"), "set number\n")
+	s.writeFile(filepath.Join(castleRoot, ".homesick_subdir"), ".config\n")
+	s.writeFile(filepath.Join(castleHome, ".config", "myapp", "config.toml"), "ok=true\n")
+
+	require.NoError(s.T(), s.app.Link("parity-castle"))
+	require.NoError(s.T(), s.app.Unlink("parity-castle"))
+	require.NoError(s.T(), s.app.Link("parity-castle"))
+
+	toolPath := filepath.Join(s.homeDir, ".local", "bin", "tool")
+	s.writeFile(toolPath, "#!/usr/bin/env bash\n")
+
+	require.NoError(s.T(), s.app.Track(toolPath, "parity-castle"))
+
+	expectedTarget := filepath.Join(castleHome, ".local", "bin", "tool")
+	info, err := os.Lstat(toolPath)
+	require.NoError(s.T(), err)
+	require.True(s.T(), info.Mode()&os.ModeSymlink != 0)
+
+	target, err := os.Readlink(toolPath)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), expectedTarget, target)
+
+	subdirData, err := os.ReadFile(filepath.Join(castleRoot, ".homesick_subdir"))
+	require.NoError(s.T(), err)
+	require.Contains(s.T(), string(subdirData), ".local/bin\n")
+}
+
+func (s *TrackSuite) TestTrack_DefaultCastleName() {
+	castleRoot := s.createCastleRepo("dotfiles")
+	castleHome := filepath.Join(castleRoot, "home")
+
+	filePath := filepath.Join(s.homeDir, ".tmux.conf")
+	s.writeFile(filePath, "set -g mouse on\n")
+
+	require.NoError(s.T(), s.app.Track(filePath, ""))
+
+	expectedTarget := filepath.Join(castleHome, ".tmux.conf")
+	require.FileExists(s.T(), expectedTarget)
+
+	linkTarget, err := os.Readlink(filePath)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), expectedTarget, linkTarget)
+}

internal/homesick/core/unlink_test.go

@@ -0,0 +1,106 @@
+package core_test
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/core"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type UnlinkSuite struct {
+	suite.Suite
+	tmpDir   string
+	homeDir  string
+	reposDir string
+	app      *core.App
+}
+
+func TestUnlinkSuite(t *testing.T) {
+	suite.Run(t, new(UnlinkSuite))
+}
+
+func (s *UnlinkSuite) SetupTest() {
+	s.tmpDir = s.T().TempDir()
+	s.homeDir = filepath.Join(s.tmpDir, "home")
+	s.reposDir = filepath.Join(s.homeDir, ".homesick", "repos")
+
+	require.NoError(s.T(), os.MkdirAll(s.reposDir, 0o755))
+
+	s.app = &core.App{
+		HomeDir:  s.homeDir,
+		ReposDir: s.reposDir,
+		Stdout:   io.Discard,
+		Stderr:   io.Discard,
+	}
+}
+
+func (s *UnlinkSuite) createCastle(castle string) string {
+	castleHome := filepath.Join(s.reposDir, castle, "home")
+	require.NoError(s.T(), os.MkdirAll(castleHome, 0o755))
+	return castleHome
+}
+
+func (s *UnlinkSuite) writeFile(path string, content string) {
+	require.NoError(s.T(), os.MkdirAll(filepath.Dir(path), 0o755))
+	require.NoError(s.T(), os.WriteFile(path, []byte(content), 0o644))
+}
+
+func (s *UnlinkSuite) TestUnlink_RemovesTopLevelSymlinks() {
+	castleHome := s.createCastle("glencairn")
+	dotfile := filepath.Join(castleHome, ".vimrc")
+	s.writeFile(dotfile, "set number\n")
+
+	require.NoError(s.T(), s.app.Link("glencairn"))
+	require.NoError(s.T(), s.app.Unlink("glencairn"))
+
+	require.NoFileExists(s.T(), filepath.Join(s.homeDir, ".vimrc"))
+}
+
+func (s *UnlinkSuite) TestUnlink_RemovesNonDotfileSymlinks() {
+	castleHome := s.createCastle("glencairn")
+	binFile := filepath.Join(castleHome, "bin")
+	s.writeFile(binFile, "#!/usr/bin/env bash\n")
+
+	require.NoError(s.T(), s.app.Link("glencairn"))
+	require.NoError(s.T(), s.app.Unlink("glencairn"))
+
+	require.NoFileExists(s.T(), filepath.Join(s.homeDir, "bin"))
+}
+
+func (s *UnlinkSuite) TestUnlink_RespectsHomesickSubdir() {
+	castleHome := s.createCastle("glencairn")
+	appDir := filepath.Join(castleHome, ".config", "myapp")
+	s.writeFile(filepath.Join(appDir, "config.toml"), "ok=true\n")
+	s.writeFile(filepath.Join(s.reposDir, "glencairn", ".homesick_subdir"), ".config\n")
+
+	require.NoError(s.T(), s.app.Link("glencairn"))
+	require.NoError(s.T(), s.app.Unlink("glencairn"))
+
+	require.DirExists(s.T(), filepath.Join(s.homeDir, ".config"))
+	require.NoFileExists(s.T(), filepath.Join(s.homeDir, ".config", "myapp"))
+}
+
+func (s *UnlinkSuite) TestUnlink_DefaultCastleName() {
+	castleHome := s.createCastle("dotfiles")
+	dotfile := filepath.Join(castleHome, ".zshrc")
+	s.writeFile(dotfile, "export EDITOR=vim\n")
+
+	require.NoError(s.T(), s.app.Link("dotfiles"))
+	require.NoError(s.T(), s.app.Unlink(""))
+
+	require.NoFileExists(s.T(), filepath.Join(s.homeDir, ".zshrc"))
+}
+
+func (s *UnlinkSuite) TestUnlink_IgnoresNonSymlinkDestination() {
+	castleHome := s.createCastle("glencairn")
+	dotfile := filepath.Join(castleHome, ".gitconfig")
+	s.writeFile(dotfile, "[user]\n")
+	s.writeFile(filepath.Join(s.homeDir, ".gitconfig"), "local\n")
+
+	require.NoError(s.T(), s.app.Unlink("glencairn"))
+	require.FileExists(s.T(), filepath.Join(s.homeDir, ".gitconfig"))
+}

internal/homesick/version/version.go

@@ -0,0 +1,3 @@
+package version
+
+const String = "1.1.6"

justfile

@@ -0,0 +1,27 @@
+set shell := ["bash", "-eu", "-o", "pipefail", "-c"]
+
+default:
+  @just --list
+
+go-build:
+  @mkdir -p dist
+  go build -o dist/homesick-go ./cmd/homesick
+
+go-build-linux:
+  @mkdir -p dist
+  GOOS=linux GOARCH="$(go env GOARCH)" go build -o dist/homesick-go ./cmd/homesick
+
+go-test:
+  go test ./...
+
+behavior-ruby:
+  ./script/run-behavior-suite-docker.sh
+
+behavior-go: go-build-linux
+  HOMESICK_CMD="/workspace/dist/homesick-go" ./script/run-behavior-suite-docker.sh
+
+behavior-go-verbose: go-build-linux
+  HOMESICK_CMD="/workspace/dist/homesick-go" ./script/run-behavior-suite-docker.sh --verbose
+
+behavior-ruby-verbose:
+  ./script/run-behavior-suite-docker.sh --verbose

lib/homesick.rb

@@ -1,92 +1,29 @@
-require 'thor'
+require 'homesick/actions/file_actions'
+require 'homesick/actions/git_actions'
+require 'homesick/version'
+require 'homesick/utils'
+require 'homesick/cli'
+require 'fileutils'
 
-class Homesick < Thor
+# Homesick's top-level module
-  autoload :Shell, 'homesick/shell'
+module Homesick
-  autoload :Actions, 'homesick/actions'
+  GITHUB_NAME_REPO_PATTERN = %r{\A([A-Za-z0-9_-]+/[A-Za-z0-9_-]+)\Z}.freeze
+  SUBDIR_FILENAME = '.homesick_subdir'.freeze
 
-  include Thor::Actions
+  DEFAULT_CASTLE_NAME = 'dotfiles'.freeze
-  include Homesick::Actions
+  QUIETABLE = [:say_status].freeze
 
-  add_runtime_options!
+  PRETENDABLE = [:system].freeze
 
-  GITHUB_NAME_REPO_PATTERN = /\A([A-Za-z_-]+)\/([A-Za-z_-]+)\Z/
+  QUIETABLE.each do |method_name|
-
+    define_method(method_name) do |*args|
-  def initialize(args=[], options={}, config={})
+      super(*args) unless options[:quiet]
-    super
-    self.shell = Homesick::Shell.new
-  end
-
-  desc "clone URI", "Clone +uri+ as a castle for homesick"
-  def clone(uri)
-    empty_directory repos_dir, :verbose => false
-    inside repos_dir do
-      if uri =~ GITHUB_NAME_REPO_PATTERN
-        git_clone "git://github.com/#{$1}/#{$2}.git", :destination => "#{$1}_#{$2}"
-      else
-        git_clone uri
-      end
     end
   end
 
-  desc "link NAME", "Symlinks all dotfiles from the specified castle"
+  PRETENDABLE.each do |method_name|
-  def link(home)
+    define_method(method_name) do |*args|
-    unless castle_dir(home).exist?
+      super(*args) unless options[:pretend]
-      say_status :error, "Castle #{home} did not exist in #{repos_dir}", :red
-
-      exit(1)
-
-    else
-      inside castle_dir(home) do
-        files = Pathname.glob('.*').reject{|a| [".",".."].include?(a.to_s)}
-        files.each do |path|
-          absolute_path = path.expand_path
-
-          inside user_dir do
-            adjusted_path = (user_dir + path).basename
-
-            symlink absolute_path, adjusted_path
-          end
-        end
-      end
-    end
-
-  end
-
-  desc "list", "List cloned castles"
-  def list
-    inside repos_dir do
-      Pathname.glob('*') do |home|
-        inside home do
-          say_status home, `git config remote.origin.url`, :cyan
-        end
-      end
     end
   end
-
-
-  no_tasks do
-    # class method, so it's convenient to stub out during tests
-    def self.user_dir
-      @user_dir ||= Pathname.new('~').expand_path
-    end
-
-    def self.repos_dir
-      @repos_dir ||= Pathname.new('~/.homesick/repos').expand_path
-    end
-
-    def repos_dir
-      self.class.repos_dir
-    end
-  end
-
-  protected
-
-  def user_dir
-    self.class.user_dir
-  end
-
-  def castle_dir(name)
-    repos_dir.join(name, 'home')
-  end
-
 end

lib/homesick/actions.rb

@@ -1,40 +0,0 @@
-class Homesick
-  module Actions
-    # TODO move this to be more like thor's template, empty_directory, etc
-    def git_clone(repo, config = {})
-      config ||= {}
-      destination = config[:destination] || begin
-        repo =~ /([^\/]+)\.git$/
-          $1
-      end
-
-      destination = Pathname.new(destination) unless destination.kind_of?(Pathname)
-
-      if ! destination.directory?
-        say_status 'git clone', "#{repo} to #{destination.expand_path}", :green unless options[:quiet]
-        system "git clone -q #{repo} #{destination}" unless options[:pretend]
-      else
-        say_status :exist, destination.expand_path, :blue unless options[:quiet]
-      end
-    end
-
-    def symlink(source, destination, config = {})
-      destination = Pathname.new(destination)
-
-      if destination.symlink?
-        if destination.readlink == source
-          say_status :identical, destination.expand_path, :blue unless options[:quiet]
-        else
-          say_status :conflict, "#{destination} exists and points to #{destination.readlink}", :red unless options[:quiet]
-
-          if shell.file_collision(destination) { source }
-            system "ln -sf #{source} #{destination}" unless options[:pretend]
-          end
-        end
-      else
-        say_status :symlink, "#{source.expand_path} to #{destination.expand_path}", :green unless options[:quiet]
-        system "ln -s #{source} #{destination}" unless options[:pretend]
-      end
-    end
-  end
-end

lib/homesick/actions/file_actions.rb

@@ -0,0 +1,78 @@
+module Homesick
+  module Actions
+    # File-related helper methods for Homesick
+    module FileActions
+      protected
+
+      def mv(source, destination)
+        source = Pathname.new(source)
+        destination = Pathname.new(destination + source.basename)
+        say_status :conflict, "#{destination} exists", :red if destination.exist? && (options[:force] || shell.file_collision(destination) { source })
+        FileUtils.mv source, destination unless options[:pretend]
+      end
+
+      def rm_rf(dir)
+        say_status "rm -rf #{dir}", '', :green
+        FileUtils.rm_r dir, force: true
+      end
+
+      def rm_link(target)
+        target = Pathname.new(target)
+
+        if target.symlink?
+          say_status :unlink, target.expand_path.to_s, :green
+          FileUtils.rm_rf target
+        else
+          say_status :conflict, "#{target} is not a symlink", :red
+        end
+      end
+
+      def rm(file)
+        say_status "rm #{file}", '', :green
+        FileUtils.rm file, force: true
+      end
+
+      def rm_r(dir)
+        say_status "rm -r #{dir}", '', :green
+        FileUtils.rm_r dir
+      end
+
+      def ln_s(source, destination)
+        source = Pathname.new(source).realpath
+        destination = Pathname.new(destination)
+        FileUtils.mkdir_p destination.dirname
+
+        action = :success
+        action = :identical if destination.symlink? && destination.readlink == source
+        action = :symlink_conflict if destination.symlink?
+        action = :conflict if destination.exist?
+
+        handle_symlink_action action, source, destination
+      end
+
+      def handle_symlink_action(action, source, destination)
+        if action == :identical
+          say_status :identical, destination.expand_path, :blue
+          return
+        end
+        message = generate_symlink_message action, source, destination
+        if %i[symlink_conflict conflict].include?(action)
+          say_status :conflict, message, :red
+          if collision_accepted?(destination, source)
+            FileUtils.rm_r destination, force: true unless options[:pretend]
+          end
+        else
+          say_status :symlink, message, :green
+        end
+        FileUtils.ln_s source, destination, force: true unless options[:pretend]
+      end
+
+      def generate_symlink_message(action, source, destination)
+        message = "#{source.expand_path} to #{destination.expand_path}"
+        message = "#{destination} exists and points to #{destination.readlink}" if action == :symlink_conflict
+        message = "#{destination} exists" if action == :conflict
+        message
+      end
+    end
+  end
+end

lib/homesick/actions/git_actions.rb

@@ -0,0 +1,114 @@
+module Homesick
+  module Actions
+    # Git-related helper methods for Homesick
+    module GitActions
+      # Information on the minimum git version required for Homesick
+      MIN_VERSION = {
+        major: 1,
+        minor: 8,
+        patch: 0
+      }.freeze
+      STRING = MIN_VERSION.values.join('.')
+
+      def git_version_correct?
+        info = `git --version`.scan(/(\d+)\.(\d+)\.(\d+)/).flatten.map(&:to_i)
+        return false unless info.count == 3
+
+        current_version = Hash[%i[major minor patch].zip(info)]
+        major_equals = current_version.eql?(MIN_VERSION)
+        major_greater = current_version[:major] > MIN_VERSION[:major]
+        minor_greater = current_version[:major] == MIN_VERSION[:major] && current_version[:minor] > MIN_VERSION[:minor]
+        patch_greater = current_version[:major] == MIN_VERSION[:major] && current_version[:minor] == MIN_VERSION[:minor] && current_version[:patch] >= MIN_VERSION[:patch]
+
+        major_equals || major_greater || minor_greater || patch_greater
+      end
+
+      # TODO: move this to be more like thor's template, empty_directory, etc
+      def git_clone(repo, config = {})
+        config ||= {}
+        destination = config[:destination] || File.basename(repo, '.git')
+
+        destination = Pathname.new(destination) unless destination.is_a?(Pathname)
+        FileUtils.mkdir_p destination.dirname
+
+        if destination.directory?
+          say_status :exist, destination.expand_path, :blue
+        else
+          say_status 'git clone',
+                     "#{repo} to #{destination.expand_path}",
+                     :green
+          system "git clone -q --config push.default=upstream --recursive #{repo} #{destination}"
+        end
+      end
+
+      def git_init(path = '.')
+        path = Pathname.new(path)
+
+        inside path do
+          if path.join('.git').exist?
+            say_status 'git init', 'already initialized', :blue
+          else
+            say_status 'git init', ''
+            system 'git init >/dev/null'
+          end
+        end
+      end
+
+      def git_remote_add(name, url)
+        existing_remote = `git config remote.#{name}.url`.chomp
+        existing_remote = nil if existing_remote == ''
+
+        if existing_remote
+          say_status 'git remote', "#{name} already exists", :blue
+        else
+          say_status 'git remote', "add #{name} #{url}"
+          system "git remote add #{name} #{url}"
+        end
+      end
+
+      def git_submodule_init
+        say_status 'git submodule', 'init', :green
+        system 'git submodule --quiet init'
+      end
+
+      def git_submodule_update
+        say_status 'git submodule', 'update', :green
+        system 'git submodule --quiet update --init --recursive >/dev/null 2>&1'
+      end
+
+      def git_pull
+        say_status 'git pull', '', :green
+        system 'git pull --quiet'
+      end
+
+      def git_push
+        say_status 'git push', '', :green
+        system 'git push'
+      end
+
+      def git_commit_all(config = {})
+        say_status 'git commit all', '', :green
+        if config[:message]
+          system %(git commit -a -m "#{config[:message]}")
+        else
+          system 'git commit -v -a'
+        end
+      end
+
+      def git_add(file)
+        say_status 'git add file', '', :green
+        system "git add '#{file}'"
+      end
+
+      def git_status
+        say_status 'git status', '', :green
+        system 'git status'
+      end
+
+      def git_diff
+        say_status 'git diff', '', :green
+        system 'git diff'
+      end
+    end
+  end
+end

lib/homesick/cli.rb

@@ -0,0 +1,323 @@
+require 'fileutils'
+require 'thor'
+
+module Homesick
+  # Homesick's command line interface
+  class CLI < Thor
+    include Thor::Actions
+    include Homesick::Actions::FileActions
+    include Homesick::Actions::GitActions
+    include Homesick::Version
+    include Homesick::Utils
+
+    add_runtime_options!
+
+    map '-v' => :version
+    map '--version' => :version
+    # Retain a mapped version of the symlink command for compatibility.
+    map symlink: :link
+
+    def initialize(args = [], options = {}, config = {})
+      super
+      # Check if git is installed
+      unless git_version_correct?
+        say_status :error, "Git version >= #{Homesick::Actions::GitActions::STRING} must be installed to use Homesick", :red
+        exit(1)
+      end
+      configure_symlinks_diff
+    end
+
+    desc 'clone URI CASTLE_NAME', 'Clone +uri+ as a castle with name CASTLE_NAME for homesick'
+    def clone(uri, destination = nil)
+      destination = Pathname.new(destination) unless destination.nil?
+
+      inside repos_dir do
+        if File.exist?(uri)
+          uri = Pathname.new(uri).expand_path
+          raise "Castle already cloned to #{uri}" if uri.to_s.start_with?(repos_dir.to_s)
+
+          destination = uri.basename if destination.nil?
+
+          ln_s uri, destination
+        elsif uri =~ GITHUB_NAME_REPO_PATTERN
+          destination = Pathname.new(uri).basename if destination.nil?
+          git_clone "https://github.com/#{Regexp.last_match[1]}.git",
+                    destination: destination
+        elsif uri =~ /%r([^%r]*?)(\.git)?\Z/ || uri =~ /[^:]+:([^:]+)(\.git)?\Z/
+          destination = Pathname.new(Regexp.last_match[1].gsub(/\.git$/, '')).basename if destination.nil?
+          git_clone uri, destination: destination
+        else
+          raise "Unknown URI format: #{uri}"
+        end
+
+        setup_castle(destination)
+      end
+    end
+
+    desc 'rc CASTLE', 'Run the .homesickrc for the specified castle'
+    method_option :force,
+                  type: :boolean,
+                  default: false,
+                  desc: 'Evaluate .homesickrc without prompting.'
+    def rc(name = DEFAULT_CASTLE_NAME)
+      inside repos_dir do
+        destination = Pathname.new(name)
+        homesickrc = destination.join('.homesickrc').expand_path
+        return unless homesickrc.exist?
+
+        proceed = options[:force] || shell.yes?("#{name} has a .homesickrc. Proceed with evaling it? (This could be destructive)")
+        return say_status 'eval skip', "not evaling #{homesickrc}, #{destination} may need manual configuration", :blue unless proceed
+
+        say_status 'eval', homesickrc
+        inside destination do
+          eval homesickrc.read, binding, homesickrc.expand_path.to_s
+        end
+      end
+    end
+
+    desc 'pull CASTLE', 'Update the specified castle'
+    method_option :all,
+                  type: :boolean,
+                  default: false,
+                  required: false,
+                  desc: 'Update all cloned castles'
+    def pull(name = DEFAULT_CASTLE_NAME)
+      if options[:all]
+        inside_each_castle do |castle|
+          say castle.to_s.gsub(repos_dir.to_s + '/', '') + ':'
+          update_castle castle
+        end
+      else
+        update_castle name
+      end
+    end
+
+    desc 'commit CASTLE MESSAGE', "Commit the specified castle's changes"
+    def commit(name = DEFAULT_CASTLE_NAME, message = nil)
+      commit_castle name, message
+    end
+
+    desc 'push CASTLE', 'Push the specified castle'
+    def push(name = DEFAULT_CASTLE_NAME)
+      push_castle name
+    end
+
+    desc 'unlink CASTLE', 'Unsymlinks all dotfiles from the specified castle'
+    def unlink(name = DEFAULT_CASTLE_NAME)
+      check_castle_existance(name, 'symlink')
+
+      inside castle_dir(name) do
+        subdirs = subdirs(name)
+
+        # unlink files
+        unsymlink_each(name, castle_dir(name), subdirs)
+
+        # unlink files in subdirs
+        subdirs.each do |subdir|
+          unsymlink_each(name, subdir, subdirs)
+        end
+      end
+    end
+
+    desc 'link CASTLE', 'Symlinks all dotfiles from the specified castle'
+    method_option :force,
+                  type: :boolean,
+                  default: false,
+                  desc: 'Overwrite existing conflicting symlinks without prompting.'
+    def link(name = DEFAULT_CASTLE_NAME)
+      check_castle_existance(name, 'symlink')
+
+      castle_path = castle_dir(name)
+      inside castle_path do
+        subdirs = subdirs(name)
+
+        # link files
+        symlink_each(name, castle_path, subdirs)
+
+        # link files in subdirs
+        subdirs.each do |subdir|
+          symlink_each(name, subdir, subdirs)
+        end
+      end
+    end
+
+    desc 'track FILE CASTLE', 'add a file to a castle'
+    def track(file, castle = DEFAULT_CASTLE_NAME)
+      castle = Pathname.new(castle)
+      file = Pathname.new(file.chomp('/'))
+      check_castle_existance(castle, 'track')
+
+      absolute_path = file.expand_path
+      relative_dir = absolute_path.relative_path_from(home_dir).dirname
+      castle_path = Pathname.new(castle_dir(castle)).join(relative_dir)
+      FileUtils.mkdir_p castle_path
+
+      # Are we already tracking this or anything inside it?
+      target = Pathname.new(castle_path.join(file.basename))
+      if target.exist?
+        if absolute_path.directory?
+          move_dir_contents(target, absolute_path)
+          absolute_path.rmtree
+          subdir_remove(castle, relative_dir + file.basename)
+
+        elsif more_recent? absolute_path, target
+          target.delete
+          mv absolute_path, castle_path
+        else
+          say_status(:track,
+                     "#{target} already exists, and is more recent than #{file}. Run 'homesick SYMLINK CASTLE' to create symlinks.",
+                     :blue)
+        end
+      else
+        mv absolute_path, castle_path
+      end
+
+      inside home_dir do
+        absolute_path = castle_path + file.basename
+        home_path = home_dir + relative_dir + file.basename
+        ln_s absolute_path, home_path
+      end
+
+      inside castle_path do
+        git_add absolute_path
+      end
+
+      # are we tracking something nested? Add the parent dir to the manifest
+      subdir_add(castle, relative_dir) unless relative_dir.eql?(Pathname.new('.'))
+    end
+
+    desc 'list', 'List cloned castles'
+    def list
+      inside_each_castle do |castle|
+        say_status castle.relative_path_from(repos_dir).to_s,
+                   `git config remote.origin.url`.chomp,
+                   :cyan
+      end
+    end
+
+    desc 'status CASTLE', 'Shows the git status of a castle'
+    def status(castle = DEFAULT_CASTLE_NAME)
+      check_castle_existance(castle, 'status')
+      inside repos_dir.join(castle) do
+        git_status
+      end
+    end
+
+    desc 'diff CASTLE', 'Shows the git diff of uncommitted changes in a castle'
+    def diff(castle = DEFAULT_CASTLE_NAME)
+      check_castle_existance(castle, 'diff')
+      inside repos_dir.join(castle) do
+        git_diff
+      end
+    end
+
+    desc 'show_path CASTLE', 'Prints the path of a castle'
+    def show_path(castle = DEFAULT_CASTLE_NAME)
+      check_castle_existance(castle, 'show_path')
+      say repos_dir.join(castle)
+    end
+
+    desc 'generate PATH', 'generate a homesick-ready git repo at PATH'
+    def generate(castle)
+      castle = Pathname.new(castle).expand_path
+
+      github_user = `git config github.user`.chomp
+      github_user = nil if github_user == ''
+      github_repo = castle.basename
+
+      empty_directory castle
+      inside castle do
+        git_init
+        if github_user
+          url = "git@github.com:#{github_user}/#{github_repo}.git"
+          git_remote_add 'origin', url
+        end
+
+        empty_directory 'home'
+      end
+    end
+
+    desc 'destroy CASTLE', 'Delete all symlinks and remove the cloned repository'
+    def destroy(name)
+      check_castle_existance name, 'destroy'
+      return unless shell.yes?('This will destroy your castle irreversible! Are you sure?')
+
+      unlink(name)
+      rm_rf repos_dir.join(name)
+    end
+
+    desc 'cd CASTLE', 'Open a new shell in the root of the given castle'
+    def cd(castle = DEFAULT_CASTLE_NAME)
+      check_castle_existance castle, 'cd'
+      castle_dir = repos_dir.join(castle)
+      say_status "cd #{castle_dir.realpath}",
+                 "Opening a new shell in castle '#{castle}'. To return to the original one exit from the new shell.",
+                 :green
+      inside castle_dir do
+        system(ENV['SHELL'])
+      end
+    end
+
+    desc 'open CASTLE',
+         'Open your default editor in the root of the given castle'
+    def open(castle = DEFAULT_CASTLE_NAME)
+      unless ENV['EDITOR']
+        say_status :error,
+                   'The $EDITOR environment variable must be set to use this command',
+                   :red
+
+        exit(1)
+      end
+      check_castle_existance castle, 'open'
+      castle_dir = repos_dir.join(castle)
+      say_status "#{castle_dir.realpath}: #{ENV['EDITOR']} .",
+                 "Opening the root directory of castle '#{castle}' in editor '#{ENV['EDITOR']}'.",
+                 :green
+      inside castle_dir do
+        system("#{ENV['EDITOR']} .")
+      end
+    end
+
+    desc 'exec CASTLE COMMAND',
+         'Execute a single shell command inside the root of a castle'
+    def exec(castle, *args)
+      check_castle_existance castle, 'exec'
+      unless args.count > 0
+        say_status :error,
+                   'You must pass a shell command to execute',
+                   :red
+        exit(1)
+      end
+      full_command = args.join(' ')
+      say_status "exec '#{full_command}'",
+                 "#{options[:pretend] ? 'Would execute' : 'Executing command'} '#{full_command}' in castle '#{castle}'",
+                 :green
+      inside repos_dir.join(castle) do
+        system(full_command)
+      end
+    end
+
+    desc 'exec_all COMMAND',
+         'Execute a single shell command inside the root of every cloned castle'
+    def exec_all(*args)
+      unless args.count > 0
+        say_status :error,
+                   'You must pass a shell command to execute',
+                   :red
+        exit(1)
+      end
+      full_command = args.join(' ')
+      inside_each_castle do |castle|
+        say_status "exec '#{full_command}'",
+                   "#{options[:pretend] ? 'Would execute' : 'Executing command'} '#{full_command}' in castle '#{castle}'",
+                   :green
+        system(full_command)
+      end
+    end
+
+    desc 'version', 'Display the current version of homesick'
+    def version
+      say Homesick::Version::STRING
+    end
+  end
+end

lib/homesick/shell.rb

@@ -1,17 +0,0 @@
-class Homesick
-  # Hack in support for diffing symlinks
-  class Shell < Thor::Shell::Color
-
-    def show_diff(destination, content)
-      destination = Pathname.new(destination)
-
-      if destination.symlink?
-        say "- #{destination.readlink}", :red, true
-        say "+ #{content.expand_path}", :green, true
-      else
-        super
-      end
-    end
-
-  end
-end

lib/homesick/utils.rb

@@ -0,0 +1,215 @@
+require 'pathname'
+
+module Homesick
+  # Various utility methods that are used by Homesick
+  module Utils
+    protected
+
+    def home_dir
+      @home_dir ||= Pathname.new(ENV['HOME'] || '~').realpath
+    end
+
+    def repos_dir
+      @repos_dir ||= home_dir.join('.homesick', 'repos').expand_path
+    end
+
+    def castle_dir(name)
+      repos_dir.join(name, 'home')
+    end
+
+    def check_castle_existance(name, action)
+      return if castle_dir(name).exist?
+
+      say_status :error,
+                 "Could not #{action} #{name}, expected #{castle_dir(name)} to exist and contain dotfiles",
+                 :red
+      exit(1)
+    end
+
+    def all_castles
+      dirs = Pathname.glob("#{repos_dir}/**/.git", File::FNM_DOTMATCH)
+      # reject paths that lie inside another castle, like git submodules
+      dirs.reject do |dir|
+        dirs.any? do |other|
+          dir != other && dir.fnmatch(other.parent.join('*').to_s)
+        end
+      end
+    end
+
+    def inside_each_castle
+      all_castles.each do |git_dir|
+        castle = git_dir.dirname
+        Dir.chdir castle do # so we can call git config from the right contxt
+          yield castle
+        end
+      end
+    end
+
+    def update_castle(castle)
+      check_castle_existance(castle, 'pull')
+      inside repos_dir.join(castle) do
+        git_pull
+        git_submodule_init
+        git_submodule_update
+      end
+    end
+
+    def commit_castle(castle, message)
+      check_castle_existance(castle, 'commit')
+      inside repos_dir.join(castle) do
+        git_commit_all message: message
+      end
+    end
+
+    def push_castle(castle)
+      check_castle_existance(castle, 'push')
+      inside repos_dir.join(castle) do
+        git_push
+      end
+    end
+
+    def subdir_file(castle)
+      repos_dir.join(castle, SUBDIR_FILENAME)
+    end
+
+    def subdirs(castle)
+      subdir_filepath = subdir_file(castle)
+      subdirs = []
+      if subdir_filepath.exist?
+        subdir_filepath.readlines.each do |subdir|
+          subdirs.push(subdir.chomp)
+        end
+      end
+      subdirs
+    end
+
+    def subdir_add(castle, path)
+      subdir_filepath = subdir_file(castle)
+      File.open(subdir_filepath, 'a+') do |subdir|
+        subdir.puts path unless subdir.readlines.reduce(false) do |memo, line|
+          line.eql?("#{path}\n") || memo
+        end
+      end
+
+      inside castle_dir(castle) do
+        git_add subdir_filepath
+      end
+    end
+
+    def subdir_remove(castle, path)
+      subdir_filepath = subdir_file(castle)
+      if subdir_filepath.exist?
+        lines = IO.readlines(subdir_filepath).delete_if do |line|
+          line == "#{path}\n"
+        end
+        File.open(subdir_filepath, 'w') { |manfile| manfile.puts lines }
+      end
+
+      inside castle_dir(castle) do
+        git_add subdir_filepath
+      end
+    end
+
+    def move_dir_contents(target, dir_path)
+      child_files = dir_path.children
+      child_files.each do |child|
+        target_path = target.join(child.basename)
+        if target_path.exist?
+          if more_recent?(child, target_path) && target.file?
+            target_path.delete
+            mv child, target
+          end
+          next
+        end
+
+        mv child, target
+      end
+    end
+
+    def more_recent?(first, second)
+      first_p = Pathname.new(first)
+      second_p = Pathname.new(second)
+      first_p.mtime > second_p.mtime && !first_p.symlink?
+    end
+
+    def collision_accepted?(destination, source)
+      raise "Arguments must be instances of Pathname, #{destination.class.name} and #{source.class.name} given" unless destination.instance_of?(Pathname) && source.instance_of?(Pathname)
+
+      options[:force] || shell.file_collision(destination) { source }
+    end
+
+    def unsymlink_each(castle, basedir, subdirs)
+      each_file(castle, basedir, subdirs) do |_absolute_path, home_path|
+        rm_link home_path
+      end
+    end
+
+    def symlink_each(castle, basedir, subdirs)
+      each_file(castle, basedir, subdirs) do |absolute_path, home_path|
+        ln_s absolute_path, home_path
+      end
+    end
+
+    def setup_castle(path)
+      if path.join('.gitmodules').exist?
+        inside path do
+          git_submodule_init
+          git_submodule_update
+        end
+      end
+
+      rc(path)
+    end
+
+    def each_file(castle, basedir, subdirs)
+      absolute_basedir = Pathname.new(basedir).expand_path
+      castle_home = castle_dir(castle)
+      inside basedir do |destination_root|
+        FileUtils.cd(destination_root) unless destination_root == FileUtils.pwd
+        files = Pathname.glob('*', File::FNM_DOTMATCH)
+                        .reject { |a| ['.', '..'].include?(a.to_s) }
+                        .reject { |path| matches_ignored_dir? castle_home, path.expand_path, subdirs }
+        files.each do |path|
+          absolute_path = path.expand_path
+
+          relative_dir = absolute_basedir.relative_path_from(castle_home)
+          home_path = home_dir.join(relative_dir).join(path)
+
+          yield(absolute_path, home_path)
+        end
+      end
+    end
+
+    def matches_ignored_dir?(castle_home, absolute_path, subdirs)
+      # make ignore dirs
+      ignore_dirs = []
+      subdirs.each do |subdir|
+        # ignore all parent of each line in subdir file
+        Pathname.new(subdir).ascend do |p|
+          ignore_dirs.push(p)
+        end
+      end
+
+      # ignore dirs written in subdir file
+      ignore_dirs.uniq.each do |ignore_dir|
+        return true if absolute_path == castle_home.join(ignore_dir)
+      end
+      false
+    end
+
+    def configure_symlinks_diff
+      # Hack in support for diffing symlinks
+      # Also adds support for checking if destination or content is a directory
+      shell_metaclass = class << shell; self; end
+      shell_metaclass.send(:define_method, :show_diff) do |destination, source|
+        destination = Pathname.new(destination)
+        source = Pathname.new(source)
+        return 'Unable to create diff: destination or content is a directory' if destination.directory? || source.directory?
+        return super(destination, File.binread(source)) unless destination.symlink?
+
+        say "- #{destination.readlink}", :red, true
+        say "+ #{source.expand_path}", :green, true
+      end
+    end
+  end
+end

lib/homesick/version.rb

@@ -0,0 +1,11 @@
+module Homesick
+  # A representation of Homesick's version number in constants, including a
+  # String of the entire version number
+  module Version
+    MAJOR = 1
+    MINOR = 1
+    PATCH = 6
+
+    STRING = [MAJOR, MINOR, PATCH].compact.join('.')
+  end
+end

script/run-behavior-suite-docker.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+: "${HOMESICK_CMD:=ruby /workspace/bin/homesick}"
+behavior_verbose="${BEHAVIOR_VERBOSE:-0}"
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -v|--verbose)
+      echo "Enabling verbose output for behavior suite"
+      behavior_verbose=1
+      ;;
+    *)
+      echo "Unknown argument: $1" >&2
+      echo "Usage: $0 [--verbose]" >&2
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(cd "$script_dir/.." && pwd)"
+
+run_docker_build() {
+  echo "Building Docker image for behavior suite..."
+  local build_log
+  local -a build_cmd
+
+  if docker buildx version >/dev/null 2>&1; then
+    build_cmd=(docker buildx build --load -f "$repo_root/docker/behavior/Dockerfile" -t homesick-behavior:latest "$repo_root")
+  else
+    build_cmd=(docker build -f "$repo_root/docker/behavior/Dockerfile" -t homesick-behavior:latest "$repo_root")
+  fi
+
+  if [[ "$behavior_verbose" == "1" ]]; then
+    "${build_cmd[@]}"
+    return
+  fi
+
+  build_log="$(mktemp)"
+  if ! "${build_cmd[@]}" >"$build_log" 2>&1; then
+    cat "$build_log" >&2
+    rm -f "$build_log"
+    exit 1
+  fi
+
+  rm -f "$build_log"
+}
+
+run_docker_build
+
+echo "Running behavior suite in Docker container..."
+docker run --rm \
+  -e HOMESICK_CMD="$HOMESICK_CMD" \
+  -e BEHAVIOR_VERBOSE="$behavior_verbose" \
+  homesick-behavior:latest

spec/homesick/homesick_spec.rb

@@ -1,19 +0,0 @@
-require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
-
-describe "Homesick" do
-  before do
-    @homesick = Homesick.new
-  end
-
-  it "should clone any git repo" do
-    @homesick.should_receive(:git_clone).with('git://github.com/technicalpickles/pickled-vim.git')
-
-    @homesick.clone "git://github.com/technicalpickles/pickled-vim.git"
-  end
-
-  it "should clone a github repo" do
-    @homesick.should_receive(:git_clone).with('git://github.com/wfarr/dotfiles.git', 'wfarr_dotfiles')
-
-    @homesick.clone "wfarr/dotfiles"
-  end
-end

spec/homesick_cli_spec.rb

@@ -0,0 +1,861 @@
+require 'spec_helper'
+require 'capture-output'
+require 'pathname'
+
+describe Homesick::CLI do
+  let(:home) { create_construct }
+  after { home.destroy! }
+
+  let(:castles) { home.directory('.homesick/repos') }
+
+  let(:homesick) { Homesick::CLI.new }
+
+  before { allow(homesick).to receive(:repos_dir).and_return(castles) }
+
+  describe 'smoke tests' do
+    context 'when running bin/homesick' do
+      before do
+        bin_path = Pathname.new(__FILE__).parent.parent
+        @output = `#{bin_path.expand_path}/bin/homesick`
+      end
+      it 'should output some text when bin/homesick is called' do
+        expect(@output.length).to be > 0
+      end
+    end
+
+    context 'when a git version that doesn\'t meet the minimum required is installed' do
+      before do
+        expect_any_instance_of(Homesick::Actions::GitActions).to receive(:`).and_return('git version 1.7.6')
+      end
+      it 'should raise an exception' do
+        output = Capture.stdout { expect { Homesick::CLI.new }.to raise_error SystemExit }
+        expect(output.chomp).to include(Homesick::Actions::GitActions::STRING)
+      end
+    end
+
+    context 'when a git version that is the same as the minimum required is installed' do
+      before do
+        expect_any_instance_of(Homesick::Actions::GitActions).to receive(:`).at_least(:once).and_return("git version #{Homesick::Actions::GitActions::STRING}")
+      end
+      it 'should not raise an exception' do
+        output = Capture.stdout { expect { Homesick::CLI.new }.not_to raise_error }
+        expect(output.chomp).not_to include(Homesick::Actions::GitActions::STRING)
+      end
+    end
+
+    context 'when a git version that is greater than the minimum required is installed' do
+      before do
+        expect_any_instance_of(Homesick::Actions::GitActions).to receive(:`).at_least(:once).and_return('git version 3.9.8')
+      end
+      it 'should not raise an exception' do
+        output = Capture.stdout { expect { Homesick::CLI.new }.not_to raise_error }
+        expect(output.chomp).not_to include(Homesick::Actions::GitActions::STRING)
+      end
+    end
+  end
+
+  describe 'clone' do
+    context 'has a .homesickrc' do
+      it 'runs the .homesickrc' do
+        somewhere = create_construct
+        local_repo = somewhere.directory('some_repo')
+        local_repo.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') do |f|
+            f.print 'testing'
+          end"
+        end
+
+        expect_any_instance_of(Thor::Shell::Basic).to receive(:yes?).with(be_a(String)).and_return(true)
+        expect(homesick).to receive(:say_status).with('eval', kind_of(Pathname))
+        homesick.clone local_repo
+
+        expect(castles.join('some_repo').join('testing')).to exist
+      end
+    end
+
+    context 'of a file' do
+      it 'symlinks existing directories' do
+        somewhere = create_construct
+        local_repo = somewhere.directory('wtf')
+
+        homesick.clone local_repo
+
+        expect(castles.join('wtf').readlink).to eq(local_repo)
+      end
+
+      context 'when it exists in a repo directory' do
+        before do
+          existing_castle = given_castle('existing_castle')
+          @existing_dir = existing_castle.parent
+        end
+
+        it 'raises an error' do
+          expect(homesick).not_to receive(:git_clone)
+          expect { homesick.clone @existing_dir.to_s }.to raise_error(/already cloned/i)
+        end
+      end
+    end
+
+    it 'clones git repo like file:///path/to.git' do
+      bare_repo = File.join(create_construct.to_s, 'dotfiles.git')
+      system "git init --bare #{bare_repo} >/dev/null 2>&1"
+
+      # Capture stderr to suppress message about cloning an empty repo.
+      Capture.stderr do
+        homesick.clone "file://#{bare_repo}"
+      end
+      expect(File.directory?(File.join(home.to_s, '.homesick/repos/dotfiles')))
+        .to be_truthy
+    end
+
+    it 'clones git repo like git://host/path/to.git' do
+      expect(homesick).to receive(:git_clone)
+        .with('git://github.com/technicalpickles/pickled-vim.git', destination: Pathname.new('pickled-vim'))
+
+      homesick.clone 'git://github.com/technicalpickles/pickled-vim.git'
+    end
+
+    it 'clones git repo like git@host:path/to.git' do
+      expect(homesick).to receive(:git_clone)
+        .with('git@github.com:technicalpickles/pickled-vim.git', destination: Pathname.new('pickled-vim'))
+
+      homesick.clone 'git@github.com:technicalpickles/pickled-vim.git'
+    end
+
+    it 'clones git repo like http://host/path/to.git' do
+      expect(homesick).to receive(:git_clone)
+        .with('http://github.com/technicalpickles/pickled-vim.git', destination: Pathname.new('pickled-vim'))
+
+      homesick.clone 'http://github.com/technicalpickles/pickled-vim.git'
+    end
+
+    it 'clones git repo like http://host/path/to' do
+      expect(homesick).to receive(:git_clone)
+        .with('http://github.com/technicalpickles/pickled-vim', destination: Pathname.new('pickled-vim'))
+
+      homesick.clone 'http://github.com/technicalpickles/pickled-vim'
+    end
+
+    it 'clones git repo like host-alias:repos.git' do
+      expect(homesick).to receive(:git_clone).with('gitolite:pickled-vim.git',
+                                                   destination: Pathname.new('pickled-vim'))
+
+      homesick.clone 'gitolite:pickled-vim.git'
+    end
+
+    it 'throws an exception when trying to clone a malformed uri like malformed' do
+      expect(homesick).not_to receive(:git_clone)
+      expect { homesick.clone 'malformed' }.to raise_error(RuntimeError)
+    end
+
+    it 'clones a github repo' do
+      expect(homesick).to receive(:git_clone)
+        .with('https://github.com/wfarr/dotfiles.git', destination: Pathname.new('dotfiles'))
+
+      homesick.clone 'wfarr/dotfiles'
+    end
+
+    it 'accepts a destination', :focus do
+      expect(homesick).to receive(:git_clone)
+        .with('https://github.com/wfarr/dotfiles.git',
+              destination: Pathname.new('other-name'))
+
+      homesick.clone 'wfarr/dotfiles', 'other-name'
+    end
+  end
+
+  describe 'rc' do
+    let(:castle) { given_castle('glencairn') }
+
+    context 'when told to do so' do
+      before do
+        expect_any_instance_of(Thor::Shell::Basic).to receive(:yes?).with(be_a(String)).and_return(true)
+      end
+
+      it 'executes the .homesickrc' do
+        castle.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') do |f|
+            f.print 'testing'
+          end"
+        end
+
+        expect(homesick).to receive(:say_status).with('eval', kind_of(Pathname))
+        homesick.rc castle
+
+        expect(castle.join('testing')).to exist
+      end
+    end
+
+    context 'when options[:force] == true' do
+      let(:homesick) { Homesick::CLI.new [], force: true }
+      before do
+        expect_any_instance_of(Thor::Shell::Basic).to_not receive(:yes?)
+      end
+
+      it 'executes the .homesickrc' do
+        castle.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') do |f|
+            f.print 'testing'
+          end"
+        end
+
+        expect(homesick).to receive(:say_status).with('eval', kind_of(Pathname))
+        homesick.rc castle
+
+        expect(castle.join('testing')).to exist
+      end
+    end
+
+    context 'when told not to do so' do
+      before do
+        expect_any_instance_of(Thor::Shell::Basic).to receive(:yes?).with(be_a(String)).and_return(false)
+      end
+
+      it 'does not execute the .homesickrc' do
+        castle.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') do |f|
+            f.print 'testing'
+          end"
+        end
+
+        expect(homesick).to receive(:say_status).with('eval skip', /not evaling.+/, :blue)
+        homesick.rc castle
+
+        expect(castle.join('testing')).not_to exist
+      end
+    end
+  end
+
+  describe 'link_castle' do
+    let(:castle) { given_castle('glencairn') }
+
+    it 'links dotfiles from a castle to the home folder' do
+      dotfile = castle.file('.some_dotfile')
+
+      homesick.link('glencairn')
+
+      expect(home.join('.some_dotfile').readlink).to eq(dotfile)
+    end
+
+    it 'links non-dotfiles from a castle to the home folder' do
+      dotfile = castle.file('bin')
+
+      homesick.link('glencairn')
+
+      expect(home.join('bin').readlink).to eq(dotfile)
+    end
+
+    context 'when forced' do
+      let(:homesick) { Homesick::CLI.new [], force: true }
+
+      it 'can override symlinks to directories' do
+        somewhere_else = create_construct
+        existing_dotdir_link = home.join('.vim')
+        FileUtils.ln_s somewhere_else, existing_dotdir_link
+
+        dotdir = castle.directory('.vim')
+
+        homesick.link('glencairn')
+
+        expect(existing_dotdir_link.readlink).to eq(dotdir)
+      end
+
+      it 'can override existing directory' do
+        existing_dotdir = home.directory('.vim')
+
+        dotdir = castle.directory('.vim')
+
+        homesick.link('glencairn')
+
+        expect(existing_dotdir.readlink).to eq(dotdir)
+      end
+    end
+
+    context "with '.config' in .homesick_subdir" do
+      let(:castle) { given_castle('glencairn', ['.config']) }
+      it 'can symlink in sub directory' do
+        dotdir = castle.directory('.config')
+        dotfile = dotdir.file('.some_dotfile')
+
+        homesick.link('glencairn')
+
+        home_dotdir = home.join('.config')
+        expect(home_dotdir.symlink?).to eq(false)
+        expect(home_dotdir.join('.some_dotfile').readlink).to eq(dotfile)
+      end
+    end
+
+    context "with '.config/appA' in .homesick_subdir" do
+      let(:castle) { given_castle('glencairn', ['.config/appA']) }
+      it 'can symlink in nested sub directory' do
+        dotdir = castle.directory('.config').directory('appA')
+        dotfile = dotdir.file('.some_dotfile')
+
+        homesick.link('glencairn')
+
+        home_dotdir = home.join('.config').join('appA')
+        expect(home_dotdir.symlink?).to eq(false)
+        expect(home_dotdir.join('.some_dotfile').readlink).to eq(dotfile)
+      end
+    end
+
+    context "with '.config' and '.config/someapp' in .homesick_subdir" do
+      let(:castle) do
+        given_castle('glencairn', ['.config', '.config/someapp'])
+      end
+      it 'can symlink under both of .config and .config/someapp' do
+        config_dir = castle.directory('.config')
+        config_dotfile = config_dir.file('.some_dotfile')
+        someapp_dir = config_dir.directory('someapp')
+        someapp_dotfile = someapp_dir.file('.some_appfile')
+
+        homesick.link('glencairn')
+
+        home_config_dir = home.join('.config')
+        home_someapp_dir = home_config_dir.join('someapp')
+        expect(home_config_dir.symlink?).to eq(false)
+        expect(home_config_dir.join('.some_dotfile').readlink).to eq(config_dotfile)
+        expect(home_someapp_dir.symlink?).to eq(false)
+        expect(home_someapp_dir.join('.some_appfile').readlink).to eq(someapp_dotfile)
+      end
+    end
+
+    context 'when call with no castle name' do
+      let(:castle) { given_castle('dotfiles') }
+      it 'using default castle name: "dotfiles"' do
+        dotfile = castle.file('.some_dotfile')
+
+        homesick.link
+
+        expect(home.join('.some_dotfile').readlink).to eq(dotfile)
+      end
+    end
+
+    context 'when call and some files conflict' do
+      it 'shows differences for conflicting text files' do
+        contents = { castle: 'castle has new content', home: 'home already has content' }
+
+        dotfile = castle.file('text')
+        File.open(dotfile.to_s, 'w') do |f|
+          f.write contents[:castle]
+        end
+        File.open(home.join('text').to_s, 'w') do |f|
+          f.write contents[:home]
+        end
+        message = Capture.stdout { homesick.shell.show_diff(home.join('text'), dotfile) }
+        expect(message.b).to match(/- ?#{contents[:home]}\n.*\+ ?#{contents[:castle]}$/m)
+      end
+      it 'shows message or differences for conflicting binary files' do
+        # content which contains NULL character, without any parentheses, braces, ...
+        contents = { castle: (0..255).step(30).map(&:chr).join, home: (0..255).step(30).reverse_each.map(&:chr).join }
+
+        dotfile = castle.file('binary')
+        File.open(dotfile.to_s, 'w') do |f|
+          f.write contents[:castle]
+        end
+        File.open(home.join('binary').to_s, 'w') do |f|
+          f.write contents[:home]
+        end
+        message = Capture.stdout { homesick.shell.show_diff(home.join('binary'), dotfile) }
+        if homesick.shell.is_a?(Thor::Shell::Color)
+          expect(message.b).to match(/- ?#{contents[:home]}\n.*\+ ?#{contents[:castle]}$/m)
+        elsif homesick.shell.is_a?(Thor::Shell::Basic)
+          expect(message.b).to match(/^Binary files .+ differ$/)
+        end
+      end
+    end
+  end
+
+  describe 'unlink' do
+    let(:castle) { given_castle('glencairn') }
+
+    it 'unlinks dotfiles in the home folder' do
+      castle.file('.some_dotfile')
+
+      homesick.link('glencairn')
+      homesick.unlink('glencairn')
+
+      expect(home.join('.some_dotfile')).not_to exist
+    end
+
+    it 'unlinks non-dotfiles from the home folder' do
+      castle.file('bin')
+
+      homesick.link('glencairn')
+      homesick.unlink('glencairn')
+
+      expect(home.join('bin')).not_to exist
+    end
+
+    context "with '.config' in .homesick_subdir" do
+      let(:castle) { given_castle('glencairn', ['.config']) }
+
+      it 'can unlink sub directories' do
+        castle.directory('.config').file('.some_dotfile')
+
+        homesick.link('glencairn')
+        homesick.unlink('glencairn')
+
+        home_dotdir = home.join('.config')
+        expect(home_dotdir).to exist
+        expect(home_dotdir.join('.some_dotfile')).not_to exist
+      end
+    end
+
+    context "with '.config/appA' in .homesick_subdir" do
+      let(:castle) { given_castle('glencairn', ['.config/appA']) }
+
+      it 'can unsymlink in nested sub directory' do
+        castle.directory('.config').directory('appA').file('.some_dotfile')
+
+        homesick.link('glencairn')
+        homesick.unlink('glencairn')
+
+        home_dotdir = home.join('.config').join('appA')
+        expect(home_dotdir).to exist
+        expect(home_dotdir.join('.some_dotfile')).not_to exist
+      end
+    end
+
+    context "with '.config' and '.config/someapp' in .homesick_subdir" do
+      let(:castle) do
+        given_castle('glencairn', ['.config', '.config/someapp'])
+      end
+
+      it 'can unsymlink under both of .config and .config/someapp' do
+        config_dir = castle.directory('.config')
+        config_dir.file('.some_dotfile')
+        config_dir.directory('someapp').file('.some_appfile')
+
+        homesick.link('glencairn')
+        homesick.unlink('glencairn')
+
+        home_config_dir = home.join('.config')
+        home_someapp_dir = home_config_dir.join('someapp')
+        expect(home_config_dir).to exist
+        expect(home_config_dir.join('.some_dotfile')).not_to exist
+        expect(home_someapp_dir).to exist
+        expect(home_someapp_dir.join('.some_appfile')).not_to exist
+      end
+    end
+
+    context 'when call with no castle name' do
+      let(:castle) { given_castle('dotfiles') }
+
+      it 'using default castle name: "dotfiles"' do
+        castle.file('.some_dotfile')
+
+        homesick.link
+        homesick.unlink
+
+        expect(home.join('.some_dotfile')).not_to exist
+      end
+    end
+  end
+
+  describe 'list' do
+    it 'says each castle in the castle directory' do
+      given_castle('zomg')
+      given_castle('wtf/zomg')
+
+      expect(homesick).to receive(:say_status)
+        .with('zomg', 'git://github.com/technicalpickles/zomg.git', :cyan)
+      expect(homesick).to receive(:say_status)
+        .with('wtf/zomg', 'git://github.com/technicalpickles/zomg.git', :cyan)
+
+      homesick.list
+    end
+  end
+
+  describe 'status' do
+    it 'says "nothing to commit" when there are no changes' do
+      given_castle('castle_repo')
+      text = Capture.stdout { homesick.status('castle_repo') }
+      expect(text).to match(%r{nothing to commit \(create/copy files and use "git add" to track\)$})
+    end
+
+    it 'says "Changes to be committed" when there are changes' do
+      given_castle('castle_repo')
+      some_rc_file = home.file '.some_rc_file'
+      homesick.track(some_rc_file.to_s, 'castle_repo')
+      text = Capture.stdout { homesick.status('castle_repo') }
+      expect(text).to match(%r{Changes to be committed:.*new file:\s*home\/.some_rc_file}m)
+    end
+  end
+
+  describe 'diff' do
+    it 'outputs an empty message when there are no changes to commit' do
+      given_castle('castle_repo')
+      some_rc_file = home.file '.some_rc_file'
+      homesick.track(some_rc_file.to_s, 'castle_repo')
+      Capture.stdout do
+        homesick.commit 'castle_repo', 'Adding a file to the test'
+      end
+      text = Capture.stdout { homesick.diff('castle_repo') }
+      expect(text).to eq('')
+    end
+
+    it 'outputs a diff message when there are changes to commit' do
+      given_castle('castle_repo')
+      some_rc_file = home.file '.some_rc_file'
+      homesick.track(some_rc_file.to_s, 'castle_repo')
+      Capture.stdout do
+        homesick.commit 'castle_repo', 'Adding a file to the test'
+      end
+      File.open(some_rc_file.to_s, 'w') do |file|
+        file.puts 'Some test text'
+      end
+      text = Capture.stdout { homesick.diff('castle_repo') }
+      expect(text).to match(/diff --git.+Some test text$/m)
+    end
+  end
+
+  describe 'show_path' do
+    it 'says the path of a castle' do
+      castle = given_castle('castle_repo')
+
+      expect(homesick).to receive(:say).with(castle.dirname)
+
+      homesick.show_path('castle_repo')
+    end
+  end
+
+  describe 'pull' do
+    it 'performs a pull, submodule init and update when the given castle exists' do
+      given_castle('castle_repo')
+      allow(homesick).to receive(:system).once.with('git pull --quiet')
+      allow(homesick).to receive(:system).once.with('git submodule --quiet init')
+      allow(homesick).to receive(:system).once.with('git submodule --quiet update --init --recursive >/dev/null 2>&1')
+      homesick.pull 'castle_repo'
+    end
+
+    it 'prints an error message when trying to pull a non-existant castle' do
+      expect(homesick).to receive('say_status').once
+                                               .with(:error,
+                                                     /Could not pull castle_repo, expected .* to exist and contain dotfiles/,
+                                                     :red)
+      expect { homesick.pull 'castle_repo' }.to raise_error(SystemExit)
+    end
+
+    describe '--all' do
+      it 'pulls each castle when invoked with --all' do
+        given_castle('castle_repo')
+        given_castle('glencairn')
+        allow(homesick).to receive(:system).exactly(2).times.with('git pull --quiet')
+        allow(homesick).to receive(:system).exactly(2).times
+                                           .with('git submodule --quiet init')
+        allow(homesick).to receive(:system).exactly(2).times
+                                           .with('git submodule --quiet update --init --recursive >/dev/null 2>&1')
+        Capture.stdout do
+          Capture.stderr { homesick.invoke 'pull', [], all: true }
+        end
+      end
+    end
+  end
+
+  describe 'push' do
+    it 'performs a git push on the given castle' do
+      given_castle('castle_repo')
+      allow(homesick).to receive(:system).once.with('git push')
+      homesick.push 'castle_repo'
+    end
+
+    it 'prints an error message when trying to push a non-existant castle' do
+      expect(homesick).to receive('say_status').once
+                                               .with(:error, /Could not push castle_repo, expected .* to exist and contain dotfiles/, :red)
+      expect { homesick.push 'castle_repo' }.to raise_error(SystemExit)
+    end
+  end
+
+  describe 'track' do
+    it 'moves the tracked file into the castle' do
+      castle = given_castle('castle_repo')
+
+      some_rc_file = home.file '.some_rc_file'
+
+      homesick.track(some_rc_file.to_s, 'castle_repo')
+
+      tracked_file = castle.join('.some_rc_file')
+      expect(tracked_file).to exist
+
+      expect(some_rc_file.readlink).to eq(tracked_file)
+    end
+
+    it 'handles files with parens' do
+      castle = given_castle('castle_repo')
+
+      some_rc_file = home.file 'Default (Linux).sublime-keymap'
+
+      homesick.track(some_rc_file.to_s, 'castle_repo')
+
+      tracked_file = castle.join('Default (Linux).sublime-keymap')
+      expect(tracked_file).to exist
+
+      expect(some_rc_file.readlink).to eq(tracked_file)
+    end
+
+    it 'tracks a file in nested folder structure' do
+      castle = given_castle('castle_repo')
+
+      some_nested_file = home.file('some/nested/file.txt')
+      homesick.track(some_nested_file.to_s, 'castle_repo')
+
+      tracked_file = castle.join('some/nested/file.txt')
+      expect(tracked_file).to exist
+      expect(some_nested_file.readlink).to eq(tracked_file)
+    end
+
+    it 'tracks a nested directory' do
+      castle = given_castle('castle_repo')
+
+      some_nested_dir = home.directory('some/nested/directory/')
+      homesick.track(some_nested_dir.to_s, 'castle_repo')
+
+      tracked_file = castle.join('some/nested/directory/')
+      expect(tracked_file).to exist
+      expect(some_nested_dir.realpath).to eq(tracked_file.realpath)
+    end
+
+    context 'when call with no castle name' do
+      it 'using default castle name: "dotfiles"' do
+        castle = given_castle('dotfiles')
+
+        some_rc_file = home.file '.some_rc_file'
+
+        homesick.track(some_rc_file.to_s)
+
+        tracked_file = castle.join('.some_rc_file')
+        expect(tracked_file).to exist
+
+        expect(some_rc_file.readlink).to eq(tracked_file)
+      end
+    end
+
+    describe 'commit' do
+      it 'has a commit message when the commit succeeds' do
+        given_castle('castle_repo')
+        some_rc_file = home.file '.a_random_rc_file'
+        homesick.track(some_rc_file.to_s, 'castle_repo')
+        text = Capture.stdout do
+          homesick.commit('castle_repo', 'Test message')
+        end
+        expect(text).to match(/^\[master \(root-commit\) \w+\] Test message/)
+      end
+    end
+
+    # Note that this is a test for the subdir_file related feature of track,
+    # not for the subdir_file method itself.
+    describe 'subdir_file' do
+      it 'adds the nested files parent to the subdir_file' do
+        castle = given_castle('castle_repo')
+
+        some_nested_file = home.file('some/nested/file.txt')
+        homesick.track(some_nested_file.to_s, 'castle_repo')
+
+        subdir_file = castle.parent.join(Homesick::SUBDIR_FILENAME)
+        File.open(subdir_file, 'r') do |f|
+          expect(f.readline).to eq("some/nested\n")
+        end
+      end
+
+      it 'does NOT add anything if the files parent is already listed' do
+        castle = given_castle('castle_repo')
+
+        some_nested_file = home.file('some/nested/file.txt')
+        other_nested_file = home.file('some/nested/other.txt')
+        homesick.track(some_nested_file.to_s, 'castle_repo')
+        homesick.track(other_nested_file.to_s, 'castle_repo')
+
+        subdir_file = castle.parent.join(Homesick::SUBDIR_FILENAME)
+        File.open(subdir_file, 'r') do |f|
+          expect(f.readlines.size).to eq(1)
+        end
+      end
+
+      it 'removes the parent of a tracked file from the subdir_file if the parent itself is tracked' do
+        castle = given_castle('castle_repo')
+
+        some_nested_file = home.file('some/nested/file.txt')
+        nested_parent = home.directory('some/nested/')
+        homesick.track(some_nested_file.to_s, 'castle_repo')
+        homesick.track(nested_parent.to_s, 'castle_repo')
+
+        subdir_file = castle.parent.join(Homesick::SUBDIR_FILENAME)
+        File.open(subdir_file, 'r') do |f|
+          f.each_line { |line| expect(line).not_to eq("some/nested\n") }
+        end
+      end
+    end
+  end
+
+  describe 'destroy' do
+    it 'removes the symlink files' do
+      expect_any_instance_of(Thor::Shell::Basic).to receive(:yes?).and_return('y')
+      given_castle('stronghold')
+      some_rc_file = home.file '.some_rc_file'
+      homesick.track(some_rc_file.to_s, 'stronghold')
+      homesick.destroy('stronghold')
+
+      expect(some_rc_file).not_to be_exist
+    end
+
+    it 'deletes the cloned repository' do
+      expect_any_instance_of(Thor::Shell::Basic).to receive(:yes?).and_return('y')
+      castle = given_castle('stronghold')
+      some_rc_file = home.file '.some_rc_file'
+      homesick.track(some_rc_file.to_s, 'stronghold')
+      homesick.destroy('stronghold')
+
+      expect(castle).not_to be_exist
+    end
+  end
+
+  describe 'cd' do
+    it "cd's to the root directory of the given castle" do
+      given_castle('castle_repo')
+      expect(homesick).to receive('inside').once.with(kind_of(Pathname)).and_yield
+      expect(homesick).to receive('system').once.with(ENV['SHELL'])
+      Capture.stdout { homesick.cd 'castle_repo' }
+    end
+
+    it 'returns an error message when the given castle does not exist' do
+      expect(homesick).to receive('say_status').once
+                                               .with(:error, /Could not cd castle_repo, expected .* to exist and contain dotfiles/, :red)
+      expect { homesick.cd 'castle_repo' }.to raise_error(SystemExit)
+    end
+  end
+
+  describe 'open' do
+    it 'opens the system default editor in the root of the given castle' do
+      # Make sure calls to ENV use default values for most things...
+      allow(ENV).to receive(:[]).and_call_original
+      # Set a default value for 'EDITOR' just in case none is set
+      allow(ENV).to receive(:[]).with('EDITOR').and_return('vim')
+      given_castle 'castle_repo'
+      expect(homesick).to receive('inside').once.with(kind_of(Pathname)).and_yield
+      expect(homesick).to receive('system').once.with('vim .')
+      Capture.stdout { homesick.open 'castle_repo' }
+    end
+
+    it 'returns an error message when the $EDITOR environment variable is not set' do
+      # Return empty ENV, the test does not call it anyway
+      allow(ENV).to receive(:[]).and_return(nil)
+      # Set the default editor to make sure it fails.
+      allow(ENV).to receive(:[]).with('EDITOR').and_return(nil)
+      expect(homesick).to receive('say_status').once
+                                               .with(:error, 'The $EDITOR environment variable must be set to use this command', :red)
+      expect { homesick.open 'castle_repo' }.to raise_error(SystemExit)
+    end
+
+    it 'returns an error message when the given castle does not exist' do
+      # Return empty ENV, the test does not call it anyway
+      allow(ENV).to receive(:[]).and_return(nil)
+      # Set a default just in case none is set
+      allow(ENV).to receive(:[]).with('EDITOR').and_return('vim')
+      allow(homesick).to receive('say_status').once
+                                              .with(:error, /Could not open castle_repo, expected .* to exist and contain dotfiles/, :red)
+      expect { homesick.open 'castle_repo' }.to raise_error(SystemExit)
+    end
+  end
+
+  describe 'version' do
+    it 'prints the current version of homesick' do
+      text = Capture.stdout { homesick.version }
+      expect(text.chomp).to match(/#{Regexp.escape(Homesick::Version::STRING)}/)
+    end
+  end
+
+  describe 'exec' do
+    before do
+      given_castle 'castle_repo'
+    end
+    it 'executes a single command with no arguments inside a given castle' do
+      allow(homesick).to receive('inside').once.with(kind_of(Pathname)).and_yield
+      allow(homesick).to receive('say_status').once
+                                              .with(be_a(String), be_a(String), :green)
+      allow(homesick).to receive('system').once.with('ls')
+      Capture.stdout { homesick.exec 'castle_repo', 'ls' }
+    end
+
+    it 'executes a single command with arguments inside a given castle' do
+      allow(homesick).to receive('inside').once.with(kind_of(Pathname)).and_yield
+      allow(homesick).to receive('say_status').once
+                                              .with(be_a(String), be_a(String), :green)
+      allow(homesick).to receive('system').once.with('ls -la')
+      Capture.stdout { homesick.exec 'castle_repo', 'ls', '-la' }
+    end
+
+    it 'raises an error when the method is called without a command' do
+      allow(homesick).to receive('say_status').once
+                                              .with(:error, be_a(String), :red)
+      allow(homesick).to receive('exit').once.with(1)
+      Capture.stdout { homesick.exec 'castle_repo' }
+    end
+
+    context 'pretend' do
+      it 'does not execute a command when the pretend option is passed' do
+        allow(homesick).to receive('say_status').once
+                                                .with(be_a(String), match(/.*Would execute.*/), :green)
+        expect(homesick).to receive('system').never
+        Capture.stdout { homesick.invoke 'exec', %w[castle_repo ls -la], pretend: true }
+      end
+    end
+
+    context 'quiet' do
+      it 'does not print status information when quiet is passed' do
+        expect(homesick).to receive('say_status').never
+        allow(homesick).to receive('system').once
+                                            .with('ls -la')
+        Capture.stdout { homesick.invoke 'exec', %w[castle_repo ls -la], quiet: true }
+      end
+    end
+  end
+
+  describe 'exec_all' do
+    before do
+      given_castle 'castle_repo'
+      given_castle 'another_castle_repo'
+    end
+
+    it 'executes a command without arguments inside the root of each cloned castle' do
+      allow(homesick).to receive('inside_each_castle').exactly(:twice).and_yield('castle_repo').and_yield('another_castle_repo')
+      allow(homesick).to receive('say_status').at_least(:once)
+                                              .with(be_a(String), be_a(String), :green)
+      allow(homesick).to receive('system').at_least(:once).with('ls')
+      Capture.stdout { homesick.exec_all 'ls' }
+    end
+
+    it 'executes a command with arguments inside the root of each cloned castle' do
+      allow(homesick).to receive('inside_each_castle').exactly(:twice).and_yield('castle_repo').and_yield('another_castle_repo')
+      allow(homesick).to receive('say_status').at_least(:once)
+                                              .with(be_a(String), be_a(String), :green)
+      allow(homesick).to receive('system').at_least(:once).with('ls -la')
+      Capture.stdout { homesick.exec_all 'ls', '-la' }
+    end
+
+    it 'raises an error when the method is called without a command' do
+      allow(homesick).to receive('say_status').once
+                                              .with(:error, be_a(String), :red)
+      allow(homesick).to receive('exit').once.with(1)
+      Capture.stdout { homesick.exec_all }
+    end
+
+    context 'pretend' do
+      it 'does not execute a command when the pretend option is passed' do
+        allow(homesick).to receive('say_status').at_least(:once)
+                                                .with(be_a(String), match(/.*Would execute.*/), :green)
+        expect(homesick).to receive('system').never
+        Capture.stdout { homesick.invoke 'exec_all', %w[ls -la], pretend: true }
+      end
+    end
+
+    context 'quiet' do
+      it 'does not print status information when quiet is passed' do
+        expect(homesick).to receive('say_status').never
+        allow(homesick).to receive('system').at_least(:once)
+                                            .with('ls -la')
+        Capture.stdout { homesick.invoke 'exec_all', %w[ls -la], quiet: true }
+      end
+    end
+  end
+end

spec/spec_helper.rb

@@ -1,19 +1,42 @@
+require 'coveralls'
+Coveralls.wear!
+
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'homesick'
-require 'spec'
+require 'rspec'
-require 'spec/autorun'
+require 'test_construct'
-require 'construct'
+require 'tempfile'
 
-Spec::Runner.configure do |config|
+RSpec.configure do |config|
-  config.include Construct::Helpers
+  config.include TestConstruct::Helpers
 
-  config.before do
+  config.expect_with(:rspec) { |c| c.syntax = :expect }
-    @user_dir = create_construct
+
-    Homesick.stub!(:user_dir).and_return(@user_dir)
+  config.before { ENV['HOME'] = home.to_s }
+
+  config.before { silence! }
+
+  def silence!
+    allow(homesick).to receive(:say_status)
   end
 
-  config.after do
+  def given_castle(path, subdirs = [])
-    @user_dir.destroy!
+    name = Pathname.new(path).basename
+    castles.directory(path) do |castle|
+      Dir.chdir(castle) do
+        system 'git init >/dev/null 2>&1'
+        system 'git config user.email "test@test.com"'
+        system 'git config user.name "Test Name"'
+        system "git remote add origin git://github.com/technicalpickles/#{name}.git >/dev/null 2>&1"
+        if subdirs
+          subdir_file = castle.join(Homesick::SUBDIR_FILENAME)
+          subdirs.each do |subdir|
+            File.open(subdir_file, 'a') { |file| file.write "\n#{subdir}\n" }
+          end
+        end
+        return castle.directory('home')
+      end
+    end
   end
 end

test/behavior/behavior_suite.sh

@@ -0,0 +1,193 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+: "${HOMESICK_CMD:=ruby /workspace/bin/homesick}"
+: "${BEHAVIOR_VERBOSE:=0}"
+
+RUN_OUTPUT=""
+
+fail() {
+  echo "FAIL: $*" >&2
+  exit 1
+}
+
+pass() {
+  if [[ -t 1 ]]; then
+    printf '  \033[32mPassed\033[0m\n'
+  else
+    echo "  Passed"
+  fi
+}
+
+parse_args() {
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      -v|--verbose)
+        BEHAVIOR_VERBOSE=1
+        ;;
+      *)
+        fail "unknown argument: $1"
+        ;;
+    esac
+    shift
+  done
+}
+
+run_git() {
+  if [[ "$BEHAVIOR_VERBOSE" == "1" ]]; then
+    git "$@"
+  else
+    git "$@" >/dev/null 2>&1
+  fi
+}
+
+assert_path_exists() {
+  local path="$1"
+  [[ -e "$path" ]] || fail "expected path to exist: $path"
+}
+
+assert_path_missing() {
+  local path="$1"
+  [[ ! -e "$path" ]] || fail "expected path to be missing: $path"
+}
+
+assert_symlink_target() {
+  local link_path="$1"
+  local expected_target="$2"
+  [[ -L "$link_path" ]] || fail "expected symlink: $link_path"
+  local actual_target
+  actual_target="$(readlink "$link_path")"
+  [[ "$actual_target" == "$expected_target" ]] || fail "expected symlink target '$expected_target' but got '$actual_target'"
+}
+
+run_homesick() {
+  local out_file
+  local output
+  out_file="$(mktemp)"
+  if ! bash -lc "$HOMESICK_CMD $*" >"$out_file" 2>&1; then
+    cat "$out_file" >&2
+    rm -f "$out_file"
+    fail "homesick command failed: $*"
+  fi
+
+  output="$(cat "$out_file")"
+  RUN_OUTPUT="$output"
+
+  if [[ "$BEHAVIOR_VERBOSE" == "1" && -n "$output" ]]; then
+    printf '%s\n' "$output"
+  fi
+
+  rm -f "$out_file"
+}
+
+setup_remote_castle() {
+  local remote_dir="$1"
+  local work_dir="$2"
+
+  mkdir -p "$remote_dir"
+  run_git init --bare "$remote_dir/base.git"
+
+  mkdir -p "$work_dir/base"
+  pushd "$work_dir/base" >/dev/null
+  run_git init
+  run_git config user.email "behavior@test.local"
+  run_git config user.name "Behavior Test"
+
+  mkdir -p home/.config/myapp
+  echo "set number" > home/.vimrc
+  echo "export PATH=\"$PATH:$HOME/bin\"" > home/.zshrc
+  echo "option=true" > home/.config/myapp/config.toml
+  printf '.config\n' > .homesick_subdir
+
+  run_git add .
+  run_git commit -m "initial castle"
+  run_git remote add origin "$remote_dir/base.git"
+  run_git push -u origin master
+  popd >/dev/null
+}
+
+setup_local_test_file() {
+  mkdir -p "$HOME/.local/bin"
+  echo "#!/usr/bin/env bash" > "$HOME/.local/bin/tool"
+  chmod +x "$HOME/.local/bin/tool"
+}
+
+run_suite() {
+  local tmp_root
+  tmp_root="$(mktemp -d)"
+  trap "rm -rf '$tmp_root'" EXIT
+
+  export HOME="$tmp_root/home"
+  mkdir -p "$HOME"
+
+  local remote_root="$tmp_root/remote"
+  local work_root="$tmp_root/work"
+
+  setup_remote_castle "$remote_root" "$work_root"
+
+  echo "[1/7] clone"
+  run_homesick "clone file://$remote_root/base.git parity-castle"
+  assert_path_exists "$HOME/.homesick/repos/parity-castle/.git"
+  assert_path_exists "$HOME/.homesick/repos/parity-castle/home/.vimrc"
+  pass
+
+  echo "[2/7] link"
+  run_homesick "link parity-castle"
+  assert_symlink_target "$HOME/.vimrc" "$HOME/.homesick/repos/parity-castle/home/.vimrc"
+  assert_symlink_target "$HOME/.zshrc" "$HOME/.homesick/repos/parity-castle/home/.zshrc"
+  assert_path_exists "$HOME/.config/myapp"
+  assert_symlink_target "$HOME/.config/myapp" "$HOME/.homesick/repos/parity-castle/home/.config/myapp"
+  pass
+
+  echo "[3/7] unlink"
+  run_homesick "unlink parity-castle"
+  assert_path_missing "$HOME/.vimrc"
+  assert_path_missing "$HOME/.zshrc"
+  assert_path_exists "$HOME/.config"
+  assert_path_missing "$HOME/.config/myapp"
+  pass
+
+  echo "[4/7] relink + track"
+  run_homesick "link parity-castle"
+  setup_local_test_file
+  run_homesick "track $HOME/.local/bin/tool parity-castle"
+  assert_symlink_target "$HOME/.local/bin/tool" "$HOME/.homesick/repos/parity-castle/home/.local/bin/tool"
+  assert_path_exists "$HOME/.homesick/repos/parity-castle/.homesick_subdir"
+  grep -q "^.local/bin$" "$HOME/.homesick/repos/parity-castle/.homesick_subdir" || fail "expected .homesick_subdir to contain .local/bin"
+  pass
+
+  echo "[5/7] list and show_path"
+  local list_output
+  run_homesick "list"
+  list_output="$RUN_OUTPUT"
+  [[ "$list_output" == *"parity-castle"* ]] || fail "expected list output to include parity-castle"
+  local show_path_output
+  run_homesick "show_path parity-castle"
+  show_path_output="$RUN_OUTPUT"
+  [[ "$show_path_output" == *"$HOME/.homesick/repos/parity-castle"* ]] || fail "expected show_path output to include parity-castle path"
+  pass
+
+  echo "[6/7] status and diff"
+  echo "change" >> "$HOME/.vimrc"
+  local status_output
+  run_homesick "status parity-castle"
+  status_output="$RUN_OUTPUT"
+  [[ "$status_output" == *"modified:"* ]] || fail "expected status output to include modified file"
+  local diff_output
+  run_homesick "diff parity-castle"
+  diff_output="$RUN_OUTPUT"
+  [[ "$diff_output" == *"diff --git"* ]] || fail "expected diff output to include git diff"
+  pass
+
+  echo "[7/7] version"
+  local version_output
+  run_homesick "version"
+  version_output="$RUN_OUTPUT"
+  [[ "$version_output" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || fail "expected semantic version output, got: $version_output"
+  pass
+
+  echo "PASS: behavior suite completed for command: $HOMESICK_CMD"
+}
+
+parse_args "$@"
+run_suite