Module: Gitgo::Git::Utils

Included in:
Gitgo::Git
Defined in:
lib/gitgo/git/utils.rb

Overview

A set of utility functions split out for ease of testing.

Class Method Summary collapse

Class Method Details

.nil_or_empty?(obj) ⇒ Boolean

Returns true if the object is nil, or responds to empty and is empty.

Returns:

  • (Boolean) 


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# File 'lib/gitgo/git/utils.rb', line 54

def nil_or_empty?(obj)
  obj.nil? || (obj.respond_to?(:empty?) && obj.empty?)
end

.nil_or_empty_string?(obj) ⇒ Boolean

Returns true if the object is nil, or empty, and assumes the object is a string (ie that it responds to empty?).

Returns:

  • (Boolean) 


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# File 'lib/gitgo/git/utils.rb', line 49

def nil_or_empty_string?(obj)
  obj.nil? || obj.empty?
end

.split(path) ⇒ Object

Splits a path along slashes into an array, stripping empty strings from each end. An array may be provided in place of path; it will be duplicated before being stripped of nil/empty entries.



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# File 'lib/gitgo/git/utils.rb', line 40

def split(path)
  array = path.kind_of?(String) ? path.split("/") : path.dup
  array.shift if nil_or_empty_string?(array[0])
  array.pop   if nil_or_empty_string?(array[-1])
  array
end

.with_env(env = {}) ⇒ Object

Executes the block having set the env variables. All ENV variables that start with GIT_ will be removed regardless of whether they are specified in env or not.



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# File 'lib/gitgo/git/utils.rb', line 11

def with_env(env={})
  overrides = {}
  begin
    ENV.keys.each do |key|
      if key =~ /^GIT_/
        overrides[key] = ENV.delete(key)
      end
    end

    env.each_pair do |key, value|
      overrides[key] ||= nil
      ENV[key] = value
    end

    yield
  ensure
    overrides.each_pair do |key, value|
      if value
        ENV[key] = value
      else
        ENV.delete(key)
      end
    end
  end
end