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+%% @author Bob Ippolito <bob@mochimedia.com>
+%% @copyright 2007 Mochi Media, Inc.
+
+%% @doc Response abstraction.
+
+-module(mochiweb_response, [Request, Code, Headers]).
+-author('bob@mochimedia.com').
+
+-define(QUIP, "Any of you quaids got a smint?").
+
+-export([get_header_value/1, get/1, dump/0]).
+-export([send/1, write_chunk/1]).
+
+%% @spec get_header_value(string() | atom() | binary()) -> string() | undefined
+%% @doc Get the value of the given response header.
+get_header_value(K) ->
+ mochiweb_headers:get_value(K, Headers).
+
+%% @spec get(request | code | headers) -> term()
+%% @doc Return the internal representation of the given field.
+get(request) ->
+ Request;
+get(code) ->
+ Code;
+get(headers) ->
+ Headers.
+
+%% @spec dump() -> {mochiweb_request, [{atom(), term()}]}
+%% @doc Dump the internal representation to a "human readable" set of terms
+%% for debugging/inspection purposes.
+dump() ->
+ [{request, Request:dump()},
+ {code, Code},
+ {headers, mochiweb_headers:to_list(Headers)}].
+
+%% @spec send(iodata()) -> ok
+%% @doc Send data over the socket if the method is not HEAD.
+send(Data) ->
+ case Request:get(method) of
+ 'HEAD' ->
+ ok;
+ _ ->
+ Request:send(Data)
+ end.
+
+%% @spec write_chunk(iodata()) -> ok
+%% @doc Write a chunk of a HTTP chunked response. If Data is zero length,
+%% then the chunked response will be finished.
+write_chunk(Data) ->
+ case Request:get(version) of
+ Version when Version >= {1, 1} ->
+ Length = iolist_size(Data),
+ send([io_lib:format("~.16b\r\n", [Length]), Data, <<"\r\n">>]);
+ _ ->
+ send(Data)
+ end.