megaco_compact_text_encoder_v1.erl

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%% ``The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved via the world wide web at http://www.erlang.org/.
%% 
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%% 
%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
%% AB. All Rights Reserved.''
%% 
%%     $Id$
%%
%%----------------------------------------------------------------------
%% Purpose: Encode COMPACT Megaco/H.248 text messages from internal form
%%----------------------------------------------------------------------

-module(megaco_compact_text_encoder_v1).

-export([encode_message/2, 
	 encode_transaction/2,
	 encode_action_requests/2,
	 encode_action_request/2,
	 encode_command_request/2,
	 encode_action_reply/2]).

-export([token_tag2string/1]).

-include_lib("megaco/include/megaco.hrl").
-include_lib("megaco/include/megaco_message_v1.hrl").
-define(encoder_version_pre_prev3c,true).
-include("megaco_text_tokens.hrl").


%%----------------------------------------------------------------------
%% Convert a 'MegacoMessage' record into a binary
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------

encode_message(EC, MegaMsg) 
  when is_list(EC) and is_record(MegaMsg, 'MegacoMessage') ->
    case (catch enc_MegacoMessage(MegaMsg)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	Bin when binary(Bin) ->
	    {ok, Bin};
	DeepIoList ->
	    Bin = erlang:list_to_binary(DeepIoList),
	    {ok, Bin}
    end;
encode_message(EncodingConfig, MegaMsg) 
  when is_record(MegaMsg, 'MegacoMessage')  ->
    {error, {bad_encoding_config, EncodingConfig}};
encode_message(_EncodingConfig, _MegaMsg) ->
    {error, bad_megaco_message}.


%%----------------------------------------------------------------------
%% Convert a transaction record into a deep io list
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------
encode_transaction(_EC, Trans) ->
    case (catch enc_Transaction(Trans)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	Bin when binary(Bin) ->
	    {ok, Bin};
	DeepIoList ->
	    Bin = erlang:list_to_binary(DeepIoList),
	    {ok, Bin}
    end.


%%----------------------------------------------------------------------
%% Convert a list of ActionRequest record's into a binary
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------
encode_action_requests(_EC, ActReqs) ->
    case (catch enc_ActionRequests(ActReqs)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	Bin when binary(Bin) ->
	    {ok, Bin};
	DeepIoList ->
	    Bin = erlang:list_to_binary(DeepIoList),
	    {ok, Bin}
    end.

%%----------------------------------------------------------------------
%% Convert a ActionRequest record into a binary
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------
encode_action_request(_EC, ActReq) 
  when record(ActReq, 'ActionRequest') ->
    case (catch enc_ActionRequest(ActReq)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	Bin when binary(Bin) ->
	    {ok, Bin};
	DeepIoList ->
	    Bin = erlang:list_to_binary(DeepIoList),
	    {ok, Bin}
    end.

%%----------------------------------------------------------------------
%% Convert a CommandRequest record into a deep io list
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------
encode_command_request(_EC, CmdReq) 
  when record(CmdReq, 'CommandRequest') ->
    case (catch enc_CommandRequest(CmdReq)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	Bin when binary(Bin) ->
	    {ok, Bin};
	DeepIoList ->
	    Bin = erlang:list_to_binary(DeepIoList),
	    {ok, Bin}
    end.

%%----------------------------------------------------------------------
%% Convert a action reply into a deep io list
%% Return {ok, DeepIoList} | {error, Reason}
%%----------------------------------------------------------------------
encode_action_reply(_EC, ActRep) 
  when record(ActRep, 'ActionReply') ->
    case (catch enc_ActionReply(ActRep)) of
	{'EXIT', Reason} ->
	    {error, Reason};
	DeepIoList ->
	    {ok, DeepIoList}
    end.


%%----------------------------------------------------------------------
%% A utility function to pretty print the tags found in a megaco message
%%----------------------------------------------------------------------

token_tag2string(addReq)                 -> ?CompactAddToken;
token_tag2string(addReply)               -> ?CompactAddToken;
token_tag2string(auditDescriptor)        -> ?CompactAuditToken;
token_tag2string(auditCapRequest)        -> ?CompactAuditCapToken;
token_tag2string(auditCapReply)          -> ?CompactAuditCapToken;
token_tag2string(auditValueRequest)      -> ?CompactAuditValueToken;
token_tag2string(auditValueReply)        -> ?CompactAuditValueToken;
%% token_tag2string(X) -> ?CompactAuthToken;
token_tag2string(bothway)                -> ?CompactBothwayToken;
token_tag2string(brief)                  -> ?CompactBriefToken;
%% token_tag2string(X) -> ?CompactBufferToken;
%% token_tag2string(X) -> ?CompactCtxToken;
%% token_tag2string(X) -> ?CompactContextAuditToken;
token_tag2string(digitMapDescriptor)     -> ?CompactDigitMapToken;
token_tag2string(digitMapToken)          -> ?CompactDigitMapToken;
%% token_tag2string(X) -> ?CompactDiscardToken;
%% token_tag2string(X) -> ?CompactDisconnectedToken;
%% token_tag2string(X) -> ?CompactDelayToken;
token_tag2string(duration)               -> ?CompactDurationToken;
%% token_tag2string(X) -> ?CompactEmbedToken;
token_tag2string(emergencyAudit)         -> ?CompactEmergencyToken;
token_tag2string(errorDescriptor)        -> ?CompactErrorToken;
token_tag2string(eventBufferDescriptor)  -> ?CompactEventBufferToken;
token_tag2string(eventBufferToken)       -> ?CompactEventBufferToken;
token_tag2string(eventsDescriptor)       -> ?CompactEventsToken;
token_tag2string(eventsToken)            -> ?CompactEventsToken;
%% token_tag2string(X) -> ?CompactFailoverToken;
%% token_tag2string(X) -> ?CompactForcedToken;
%% token_tag2string(X) -> ?CompactGracefulToken;
%% token_tag2string(X) -> ?CompactH221Token;
%% token_tag2string(X) -> ?CompactH223Token;
%% token_tag2string(X) -> ?CompactH226Token;
%% token_tag2string(X) -> ?CompactHandOffToken;
%% token_tag2string(X) -> ?CompactImmAckRequiredToken;
token_tag2string(inactive)                    -> ?CompactInactiveToken;
token_tag2string(onInterruptByEvent)          -> ?CompactInterruptByEventToken;
token_tag2string(onInterruptByNewSignalDescr) -> ?CompactInterruptByNewSignalsDescrToken;
token_tag2string(isolate)        	 -> ?CompactIsolateToken;
token_tag2string(inSvc)          	 -> ?CompactInSvcToken;
token_tag2string(keepActive)     	 -> ?CompactKeepActiveToken;
token_tag2string(localDescriptor)        -> ?CompactLocalToken;
token_tag2string(localControlDescriptor) -> ?CompactLocalControlToken;
token_tag2string(lockStep)          	 -> ?CompactLockStepToken;
token_tag2string(loopBack)          	 -> ?CompactLoopbackToken;
token_tag2string(mediaDescriptor)   	 -> ?CompactMediaToken;
token_tag2string(mediaToken)        	 -> ?CompactMediaToken;
%% token_tag2string(X) -> ?CompactMegacopToken;
%% token_tag2string(X) -> ?CompactMethodToken;
%% token_tag2string(X) -> ?CompactMgcIdToken;
%% token_tag2string(X) -> ?CompactModeToken;
token_tag2string(modReq)               -> ?CompactModifyToken;
token_tag2string(modReply)             -> ?CompactModifyToken;
token_tag2string(modemDescriptor)      -> ?CompactModemToken;
token_tag2string(modemToken)           -> ?CompactModemToken;
token_tag2string(moveReq)              -> ?CompactMoveToken;
token_tag2string(moveReply)            -> ?CompactMoveToken;
%% token_tag2string(X) -> ?CompactMtpToken;
token_tag2string(muxDescriptor)        -> ?CompactMuxToken;
token_tag2string(muxToken)             -> ?CompactMuxToken;