Method: Grit::GitRuby::Repository#quick_diff

Defined in:
lib/grit/git-ruby/repository.rb

#quick_diff(tree1, tree2, path = '.', recurse = true) ⇒ Object

takes 2 tree shas and recursively walks them to find out what files or directories have been modified in them and returns an array of changes [ [full_path, ‘added’, tree1_hash, nil],

 [full_path, 'removed', nil, tree2_hash],
 [full_path, 'modified', tree1_hash, tree2_hash]
]



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# File 'lib/grit/git-ruby/repository.rb', line 499

def quick_diff(tree1, tree2, path = '.', recurse = true)
  # handle empty trees
  return changed if tree1 == tree2

  t1 = list_tree(tree1) if tree1
  t2 = list_tree(tree2) if tree2

  # finding files that are different
  changed = quick_what_changed(t1, t2, path, 'blob') +
            quick_what_changed(t1, t2, path, 'link')

  t1['tree'].each do |dir, hsh|
    t2_tree = t2['tree'][dir] rescue nil
    full = File.join(path, dir)
    if !t2_tree
      if recurse
        changed += quick_diff(hsh[:sha], nil, full, true)
      else
        changed << [full, 'added', hsh[:sha], nil]      # not in parent
      end
    elsif (hsh[:sha] != t2_tree[:sha])
      if recurse
        changed += quick_diff(hsh[:sha], t2_tree[:sha], full, true)
      else
        changed << [full, 'modified', hsh[:sha], t2_tree[:sha]]   # file changed
      end
    end
  end if t1
  t2['tree'].each do |dir, hsh|
    t1_tree = t1['tree'][dir] rescue nil
    full = File.join(path, dir)
    if !t1_tree
      if recurse
        changed += quick_diff(nil, hsh[:sha], full, true)
      else
        changed << [full, 'removed', nil, hsh[:sha]]
      end
    end
  end if t2

  changed
end