160 lines
4.4 KiB
C++
160 lines
4.4 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined( INCLUDED_BYTESTREAMUTILS_H )
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#define INCLUDED_BYTESTREAMUTILS_H
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#include "globaldefs.h"
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#if GDEF_COMPILER_GNU
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#define _ISOC9X_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define __USE_ISOC9X 1
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#define __USE_ISOC99 1
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#include <stdint.h>
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#endif
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#include <algorithm>
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// if C99 is unavailable, fall back to the types most likely to be the right sizes
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#if !defined( int16_t )
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typedef signed short int16_t;
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#endif
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#if !defined( uint16_t )
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typedef unsigned short uint16_t;
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#endif
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#if !defined( int32_t )
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typedef signed int int32_t;
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#endif
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#if !defined( uint32_t )
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typedef unsigned int uint32_t;
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#endif
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template<typename InputStreamType, typename Type>
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inline void istream_read_little_endian( InputStreamType& istream, Type& value ){
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istream.read(reinterpret_cast<typename InputStreamType::byte_type *>( &value ), sizeof(Type));
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if (GDEF_ARCH_ENDIAN_BIG) {
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std::reverse(reinterpret_cast<typename InputStreamType::byte_type *>( &value ),
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reinterpret_cast<typename InputStreamType::byte_type *>( &value ) + sizeof(Type));
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}
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}
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template<typename InputStreamType, typename Type>
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inline void istream_read_big_endian( InputStreamType& istream, Type& value ){
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istream.read(reinterpret_cast<typename InputStreamType::byte_type *>( &value ), sizeof(Type));
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if (!GDEF_ARCH_ENDIAN_BIG) {
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std::reverse(reinterpret_cast<typename InputStreamType::byte_type *>( &value ),
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reinterpret_cast<typename InputStreamType::byte_type *>( &value ) + sizeof(Type));
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}
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}
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template<typename InputStreamType>
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inline void istream_read_byte( InputStreamType& istream, typename InputStreamType::byte_type& b ){
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istream.read( &b, 1 );
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}
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template<typename InputStreamType>
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inline int16_t istream_read_int16_le( InputStreamType& istream ){
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int16_t value;
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istream_read_little_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline int16_t istream_read_int16_be( InputStreamType& istream ){
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int16_t value;
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istream_read_big_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline uint16_t istream_read_uint16_le( InputStreamType& istream ){
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uint16_t value;
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istream_read_little_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline uint16_t istream_read_uint16_be( InputStreamType& istream ){
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uint16_t value;
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istream_read_big_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline int32_t istream_read_int32_le( InputStreamType& istream ){
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int32_t value;
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istream_read_little_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline int32_t istream_read_int32_be( InputStreamType& istream ){
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int32_t value;
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istream_read_big_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline uint32_t istream_read_uint32_le( InputStreamType& istream ){
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uint32_t value;
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istream_read_little_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline uint32_t istream_read_uint32_be( InputStreamType& istream ){
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uint32_t value;
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istream_read_big_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline float istream_read_float32_le( InputStreamType& istream ){
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float value;
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istream_read_little_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline float istream_read_float32_be( InputStreamType& istream ){
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float value;
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istream_read_big_endian( istream, value );
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return value;
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}
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template<typename InputStreamType>
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inline typename InputStreamType::byte_type istream_read_byte( InputStreamType& istream ){
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typename InputStreamType::byte_type b;
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istream.read( &b, sizeof( typename InputStreamType::byte_type ) );
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return b;
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}
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#endif
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