1 files changed, 87 insertions, 0 deletions
diff --git a/lib/erl/src/thrift_file_transport.erl b/lib/erl/src/thrift_file_transport.erl
new file mode 100644
index 000000000..5ac2dbe1f
--- /dev/null
+++ b/lib/erl/src/thrift_file_transport.erl
@@ -0,0 +1,87 @@
+%%
+%% Licensed to the Apache Software Foundation (ASF) under one
+%% or more contributor license agreements. See the NOTICE file
+%% distributed with this work for additional information
+%% regarding copyright ownership. The ASF licenses this file
+%% to you under the Apache License, Version 2.0 (the
+%% "License"); you may not use this file except in compliance
+%% with the License. You may obtain a copy of the License at
+%%
+%%   http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing,
+%% software distributed under the License is distributed on an
+%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+%% KIND, either express or implied. See the License for the
+%% specific language governing permissions and limitations
+%% under the License.
+%%
+
+-module(thrift_file_transport).
+
+-behaviour(thrift_transport).
+
+-export([new_reader/1,
+         new/1,
+         new/2,
+         write/2, read/2, flush/1, close/1]).
+
+-record(t_file_transport, {device,
+                           should_close = true,
+                           mode = write}).
+
+%%%% CONSTRUCTION   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+new_reader(Filename) ->
+    case file:open(Filename, [read, binary, {read_ahead, 1024*1024}]) of
+        {ok, IODevice} ->
+            new(IODevice, [{should_close, true}, {mode, read}]);
+        Error -> Error
+    end.
+
+new(Device) ->
+    new(Device, []).
+
+%% Device :: io_device()
+%%
+%% Device should be opened in raw and binary mode.
+new(Device, Opts) when is_list(Opts) ->
+    State = parse_opts(Opts, #t_file_transport{device = Device}),
+    thrift_transport:new(?MODULE, State).
+
+
+%% Parse options
+parse_opts([{should_close, Bool} | Rest], State) when is_boolean(Bool) ->
+    parse_opts(Rest, State#t_file_transport{should_close = Bool});
+parse_opts([{mode, Mode} | Rest], State)
+  when Mode =:= write;
+       Mode =:= read ->
+    parse_opts(Rest, State#t_file_transport{mode = Mode});
+parse_opts([], State) ->
+     State.
+
+
+%%%% TRANSPORT IMPL %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+write(#t_file_transport{device = Device, mode = write}, Data) ->
+    file:write(Device, Data);
+write(_T, _D) ->
+    {error, read_mode}.
+
+
+read(#t_file_transport{device = Device, mode = read}, Len)
+  when is_integer(Len), Len >= 0 ->
+    file:read(Device, Len);
+read(_T, _D) ->
+    {error, read_mode}.
+
+flush(#t_file_transport{device = Device, mode = write}) ->
+    file:sync(Device).
+
+close(#t_file_transport{device = Device, should_close = SC}) ->
+    case SC of
+        true ->
+            file:close(Device);
+        false ->
+            ok
+    end.