%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
%%
%% 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 online 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.
%%
%% %CopyrightEnd%
%%
%%%----------------------------------------------------------------------
%%% Purpose : The purpouse of the buffer process is to take
%%% care of the data that is received by the converter
%%% process and pass it on to the printer process in chunks
%%% that can be handled.
%%%
%%% This module is a part of the buffering system, and
%%% should not be used except through the API defined
%%% in the pman_buf module.
%%%
%%%----------------------------------------------------------------------
-module(pman_buf_buffer).
%%-compile(export_all).
-export([init/1]).
-include("pman_buf.hrl").
%%
%% Initialization function for the buffer process.
%% To be started with spawn from the calling process.
%%
init(Editor) ->
Printer_pid = spawn_link(pman_buf_printer,init,[Editor,self()]),
receive
{converter_pid,Pid} ->
Pid!{buffer,accept},
buffer_loop([],0,0,Printer_pid,Pid)
end.
%%
%% Receive loop for the buffer process.
%%
buffer_loop(Buffer,Size,Acc,Printer,Converter) ->
receive
{save_buffer,Name} ->
Printer!{save_buffer,Name},
buffer_loop(Buffer,Size,Acc,Printer,Converter);
{raw,Raw,Length} -> %%output to editor
New_Size = Size + Length,
if New_Size < ?BUFF_SIZE ->
Converter!{buffer,accept};
true -> ok
end,
Print = lists:map(fun(X) -> pman_buf_utils:textformat(X) end, Raw),
New_Buff = lists:append(Buffer,Print),
buffer_loop(New_Buff,New_Size,Acc,Printer,Converter);
{clear,Text,N_Converter} ->
Converter!{buffer,accept},
Printer!clear,
buffer_loop([Text],1,1,Printer,N_Converter);
{printer,send} when Buffer /= [] ->
if
Acc > ?EDITOR_MAX ->
Printer!clear,
Printer !{buffer,"Cleared Buffer due to Size\n\n"},
buffer_loop(Buffer,Size,1,Printer,Converter);
true ->
{Length,Rest,Print} = pman_buf_utils:split(Buffer,
?PRINT_LEN,
0,
[]),
Printer ! {buffer,Print},
New_Size = Size - Length,
if New_Size < ?BUFF_SIZE ->
Converter!{buffer,accept};
true -> ok
end,
buffer_loop(Rest,New_Size,Acc+Length,Printer,Converter)
end;
{converter,file} ->
Converter!{buffer,Buffer},
self()!{raw,[to_file],1},
buffer_loop([],0,Acc,Printer,Converter)
end.
