Class: KnifeCookbookDependencies::Git

Inherits:
Object
  • Object
show all
Defined in:
lib/kcd/git.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(repo) ⇒ Git

Returns a new instance of Git.



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# File 'lib/kcd/git.rb', line 35

def initialize(repo)
  @repository = repo
end

Instance Attribute Details

#directory ⇒ Object (readonly)

Returns the value of attribute directory.



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# File 'lib/kcd/git.rb', line 32

def directory
  @directory
end

#repository ⇒ Object (readonly)

Returns the value of attribute repository.



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# File 'lib/kcd/git.rb', line 33

def repository
  @repository
end

Class Method Details

.find_git ⇒ Object

This is to defeat aliases/shell functions called ‘git’ and a number of other problems.



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# File 'lib/kcd/git.rb', line 14

def find_git
  git_path = nil
  ENV["PATH"].split(File::PATH_SEPARATOR).each do |path|
    potential_path = File.join(path, 'git')
    if File.executable?(potential_path)
      git_path = potential_path
      break
    end
  end

  unless git_path
    raise "Could not find git. Please ensure it is in your path."
  end

  return git_path
end

.git ⇒ Object 



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# File 'lib/kcd/git.rb', line 6

def git
  @git ||= find_git
end

Instance Method Details

#checkout(ref) ⇒ Object 



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# File 'lib/kcd/git.rb', line 54

def checkout(ref)
  clone

  Dir.chdir @directory do
    system(self.class.git, "checkout", "-q", ref)
  end

  error_check
end

#clean ⇒ Object 



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# File 'lib/kcd/git.rb', line 76

def clean
  FileUtils.rm_rf @directory if @directory
end

#clone ⇒ Object 



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# File 'lib/kcd/git.rb', line 39

def clone
  # XXX not sure how resilient this is, maybe a fetch/merge strategy would be better.
  if @directory
    Dir.chdir @directory do
      system(self.class.git, "pull")
    end
  else
    @directory = Dir.mktmpdir
    system(self.class.git, "clone", @repository, @directory)
  end

  error_check

end

#error_check ⇒ Object 



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# File 'lib/kcd/git.rb', line 80

def error_check
  if $?.exitstatus != 0
    raise "Did not succeed executing git; check the output above."
  end
end

#ref ⇒ Object 



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# File 'lib/kcd/git.rb', line 64

def ref
  return nil unless @directory

  this_ref = nil

  Dir.chdir @directory do
    this_ref = `#{self.class.git} rev-parse HEAD`.strip
  end

  return this_ref
end