1 // ANNA - Anna is Not Nothingness Anymore
3 // (c) Copyright 2005-2014 Eduardo Ramos Testillano & Francisco Ruiz Rayo
5 // http://redmine.teslayout.com/projects/anna-suite
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions
11 // * Redistributions of source code must retain the above copyright
12 // notice, this list of conditions and the following disclaimer.
13 // * Redistributions in binary form must reproduce the above
14 // copyright notice, this list of conditions and the following disclaimer
15 // in the documentation and/or other materials provided with the
17 // * Neither the name of the copyright holder nor the names of its
18 // contributors may be used to endorse or promote products derived from
19 // this software without specific prior written permission.
21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 // Authors: eduardo.ramos.testillano@gmail.com
34 // cisco.tierra@gmail.com
37 #ifndef anna_core_util_ZBlock_hpp
38 #define anna_core_util_ZBlock_hpp
40 #include <anna/core//DataBlock.hpp>
45 Facilita la compresión y descompresión de bloques de datos.
47 Para más información: \see http://zlib.net/manual.html
49 Para optimizar el acceso no se ha establecido ningun tipo de proteccion para ejecucion MT.
51 class ZBlock : public DataBlock {
54 * Nivel de compresión que pueden ser aplicados.
56 struct Mode { enum _v { Default = -1, NoCompression, BestSpeed = 1, BestCompression = 9 }; };
61 ZBlock() : DataBlock(true) {;}
64 * Comprime el contenido del bloque de datos recibido como parámetro y lo guarda
65 * en la estructura interna.
66 * \param data Bloque de datos a comprimir.
67 * \param mode Modo de compresión realizado.
68 * \return El bloque de datos una vez comprimido y con la información suficiente para ser descomprimido.
70 const DataBlock& compress(const DataBlock& data, const Mode::_v mode = Mode::Default) throw(RuntimeException);
73 * Descomprime el bloque de datos recibido como parámetro.
74 * \param zdata Bloque de datos obtenido como resultado de aplicar con ZBlock::compress.
75 * \param originalSize Tamaño original que tenía el buffer antes de ser comprimido.
76 * \return El bloque de datos descomprimdo.
78 const DataBlock& uncompress(const DataBlock& zdata) throw(RuntimeException);
81 ZBlock(const ZBlock&);