Method: Chef::ChefFS::FileSystem.list_pairs

Defined in:
lib/chef/chef_fs/file_system.rb

.list_pairs(pattern, a_root, b_root) ⇒ Object

Yield entries for children that are in either a_root or b_root, with matching pairs matched up.

Yields

Yields matching entries in pairs:

[ a_entry, b_entry ]

Example

Chef::ChefFS::FileSystem.list_pairs(FilePattern.new('**x.txt', a_root, b_root)) do |a, b|
  ...
end



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# File 'lib/chef/chef_fs/file_system.rb', line 143

def self.list_pairs(pattern, a_root, b_root)
  # Make sure everything on the server is also on the filesystem, and diff
  found_paths = Set.new
  Chef::ChefFS::FileSystem.list(a_root, pattern) do |a|
    found_paths << a.path
    b = Chef::ChefFS::FileSystem.resolve_path(b_root, a.path)
    yield [ a, b ]
  end

  # Check the outer regex pattern to see if it matches anything on the
  # filesystem that isn't on the server
  Chef::ChefFS::FileSystem.list(b_root, pattern) do |b|
    if !found_paths.include?(b.path)
      a = Chef::ChefFS::FileSystem.resolve_path(a_root, b.path)
      yield [ a, b ]
    end
  end
end