class Rack::Request::Headers

# File lib/rack/request.rb, line 91
def initialize(env)
  @env = env
end

# File lib/rack/request.rb, line 95
def [](k)
  @env[header_to_env_key(k)]
end

# File lib/rack/request.rb, line 99
def []=(k, v)
  @env[header_to_env_key(k)] = v
end

# File lib/rack/request.rb, line 103
def add(k, v)
  k = header_to_env_key(k)
  case existing = @env[k]
  when nil
    @env[k] = v
  when String
    @env[k] = [existing, v]
  when Array
    existing << v
  end
end

# File lib/rack/request.rb, line 115
def delete(k)
  @env.delete(header_to_env_key(k))
end

# File lib/rack/request.rb, line 119
def each
  return to_enum(:each) unless block_given?

  @env.each do |k, v|
    next unless k = env_to_header_key(k)
    yield k, v
  end
end

# File lib/rack/request.rb, line 128
def fetch(k, &block)
  @env.fetch(header_to_env_key(k), &block)
end

# File lib/rack/request.rb, line 132
def has_key?(k)
  @env.has_key?(header_to_env_key(k))
end

# File lib/rack/request.rb, line 136
def to_h
  h = {}
  each{|k, v| h[k] = v}
  h
end