mirror of https://github.com/minetest/minetest.git
465 lines
9.0 KiB
C++
465 lines
9.0 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef UTIL_SERIALIZE_HEADER
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#define UTIL_SERIALIZE_HEADER
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#include "../irrlichttypes_bloated.h"
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#include "config.h"
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#if HAVE_ENDIAN_H
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#include <endian.h>
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#include <string.h> // for memcpy
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#endif
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#include <iostream>
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#include <string>
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#define FIXEDPOINT_FACTOR 1000.0f
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#define FIXEDPOINT_INVFACTOR (1.0f/FIXEDPOINT_FACTOR)
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#if HAVE_ENDIAN_H
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// use machine native byte swapping routines
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// Note: memcpy below is optimized out by modern compilers
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inline void writeU64(u8* data, u64 i)
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{
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u64 val = htobe64(i);
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memcpy(data, &val, 8);
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}
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inline void writeU32(u8* data, u32 i)
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{
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u32 val = htobe32(i);
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memcpy(data, &val, 4);
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}
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inline void writeU16(u8* data, u16 i)
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{
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u16 val = htobe16(i);
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memcpy(data, &val, 2);
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}
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inline u64 readU64(const u8* data)
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{
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u64 val;
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memcpy(&val, data, 8);
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return be64toh(val);
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}
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inline u32 readU32(const u8* data)
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{
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u32 val;
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memcpy(&val, data, 4);
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return be32toh(val);
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}
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inline u16 readU16(const u8* data)
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{
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u16 val;
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memcpy(&val, data, 2);
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return be16toh(val);
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}
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#else
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// generic byte-swapping implementation
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inline void writeU64(u8 *data, u64 i)
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{
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data[0] = ((i>>56)&0xff);
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data[1] = ((i>>48)&0xff);
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data[2] = ((i>>40)&0xff);
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data[3] = ((i>>32)&0xff);
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data[4] = ((i>>24)&0xff);
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data[5] = ((i>>16)&0xff);
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data[6] = ((i>> 8)&0xff);
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data[7] = ((i>> 0)&0xff);
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}
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inline void writeU32(u8 *data, u32 i)
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{
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data[0] = ((i>>24)&0xff);
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data[1] = ((i>>16)&0xff);
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data[2] = ((i>> 8)&0xff);
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data[3] = ((i>> 0)&0xff);
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}
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inline void writeU16(u8 *data, u16 i)
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{
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data[0] = ((i>> 8)&0xff);
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data[1] = ((i>> 0)&0xff);
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}
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inline u64 readU64(const u8 *data)
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{
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return ((u64)data[0]<<56) | ((u64)data[1]<<48)
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| ((u64)data[2]<<40) | ((u64)data[3]<<32)
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| ((u64)data[4]<<24) | ((u64)data[5]<<16)
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| ((u64)data[6]<<8) | ((u64)data[7]<<0);
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}
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inline u32 readU32(const u8 *data)
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{
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return (data[0]<<24) | (data[1]<<16) | (data[2]<<8) | (data[3]<<0);
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}
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inline u16 readU16(const u8 *data)
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{
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return (data[0]<<8) | (data[1]<<0);
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}
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#endif
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inline void writeU8(u8 *data, u8 i)
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{
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data[0] = ((i>> 0)&0xff);
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}
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inline u8 readU8(const u8 *data)
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{
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return (data[0]<<0);
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}
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inline void writeS32(u8 *data, s32 i){
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writeU32(data, (u32)i);
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}
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inline s32 readS32(const u8 *data){
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return (s32)readU32(data);
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}
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inline void writeS16(u8 *data, s16 i){
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writeU16(data, (u16)i);
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}
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inline s16 readS16(const u8 *data){
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return (s16)readU16(data);
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}
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inline void writeS8(u8 *data, s8 i){
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writeU8(data, (u8)i);
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}
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inline s8 readS8(const u8 *data){
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return (s8)readU8(data);
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}
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inline void writeF1000(u8 *data, f32 i){
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writeS32(data, i*FIXEDPOINT_FACTOR);
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}
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inline f32 readF1000(const u8 *data){
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return (f32)readS32(data)*FIXEDPOINT_INVFACTOR;
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}
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inline void writeV3S32(u8 *data, v3s32 p)
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{
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writeS32(&data[0], p.X);
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writeS32(&data[4], p.Y);
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writeS32(&data[8], p.Z);
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}
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inline v3s32 readV3S32(const u8 *data)
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{
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v3s32 p;
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p.X = readS32(&data[0]);
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p.Y = readS32(&data[4]);
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p.Z = readS32(&data[8]);
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return p;
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}
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inline void writeV3F1000(u8 *data, v3f p)
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{
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writeF1000(&data[0], p.X);
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writeF1000(&data[4], p.Y);
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writeF1000(&data[8], p.Z);
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}
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inline v3f readV3F1000(const u8 *data)
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{
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v3f p;
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p.X = (float)readF1000(&data[0]);
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p.Y = (float)readF1000(&data[4]);
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p.Z = (float)readF1000(&data[8]);
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return p;
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}
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inline void writeV2F1000(u8 *data, v2f p)
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{
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writeF1000(&data[0], p.X);
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writeF1000(&data[4], p.Y);
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}
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inline v2f readV2F1000(const u8 *data)
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{
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v2f p;
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p.X = (float)readF1000(&data[0]);
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p.Y = (float)readF1000(&data[4]);
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return p;
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}
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inline void writeV2S16(u8 *data, v2s16 p)
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{
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writeS16(&data[0], p.X);
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writeS16(&data[2], p.Y);
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}
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inline v2s16 readV2S16(const u8 *data)
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{
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v2s16 p;
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p.X = readS16(&data[0]);
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p.Y = readS16(&data[2]);
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return p;
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}
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inline void writeV2S32(u8 *data, v2s32 p)
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{
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writeS32(&data[0], p.X);
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writeS32(&data[4], p.Y);
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}
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inline v2s32 readV2S32(const u8 *data)
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{
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v2s32 p;
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p.X = readS32(&data[0]);
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p.Y = readS32(&data[4]);
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return p;
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}
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inline void writeV3S16(u8 *data, v3s16 p)
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{
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writeS16(&data[0], p.X);
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writeS16(&data[2], p.Y);
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writeS16(&data[4], p.Z);
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}
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inline v3s16 readV3S16(const u8 *data)
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{
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v3s16 p;
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p.X = readS16(&data[0]);
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p.Y = readS16(&data[2]);
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p.Z = readS16(&data[4]);
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return p;
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}
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inline void writeARGB8(u8 *data, video::SColor p)
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{
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writeU32(data, p.color);
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}
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inline video::SColor readARGB8(const u8 *data)
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{
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video::SColor p(readU32(data));
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return p;
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}
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/*
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The above stuff directly interfaced to iostream
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*/
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inline void writeU8(std::ostream &os, u8 p)
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{
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char buf[1];
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writeU8((u8*)buf, p);
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os.write(buf, 1);
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}
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inline u8 readU8(std::istream &is)
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{
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char buf[1] = {0};
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is.read(buf, 1);
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return readU8((u8*)buf);
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}
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inline void writeU16(std::ostream &os, u16 p)
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{
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char buf[2];
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writeU16((u8*)buf, p);
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os.write(buf, 2);
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}
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inline u16 readU16(std::istream &is)
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{
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char buf[2] = {0};
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is.read(buf, 2);
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return readU16((u8*)buf);
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}
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inline void writeU32(std::ostream &os, u32 p)
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{
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char buf[4];
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writeU32((u8*)buf, p);
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os.write(buf, 4);
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}
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inline u32 readU32(std::istream &is)
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{
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char buf[4] = {0};
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is.read(buf, 4);
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return readU32((u8*)buf);
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}
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inline void writeS32(std::ostream &os, s32 p)
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{
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writeU32(os, (u32) p);
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}
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inline s32 readS32(std::istream &is)
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{
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return (s32)readU32(is);
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}
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inline void writeS16(std::ostream &os, s16 p)
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{
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writeU16(os, (u16) p);
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}
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inline s16 readS16(std::istream &is)
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{
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return (s16)readU16(is);
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}
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inline void writeS8(std::ostream &os, s8 p)
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{
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writeU8(os, (u8) p);
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}
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inline s8 readS8(std::istream &is)
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{
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return (s8)readU8(is);
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}
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inline void writeF1000(std::ostream &os, f32 p)
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{
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char buf[4];
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writeF1000((u8*)buf, p);
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os.write(buf, 4);
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}
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inline f32 readF1000(std::istream &is)
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{
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char buf[4] = {0};
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is.read(buf, 4);
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return readF1000((u8*)buf);
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}
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inline void writeV3F1000(std::ostream &os, v3f p)
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{
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char buf[12];
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writeV3F1000((u8*)buf, p);
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os.write(buf, 12);
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}
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inline v3f readV3F1000(std::istream &is)
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{
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char buf[12];
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is.read(buf, 12);
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return readV3F1000((u8*)buf);
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}
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inline void writeV2F1000(std::ostream &os, v2f p)
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{
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char buf[8];
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writeV2F1000((u8*)buf, p);
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os.write(buf, 8);
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}
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inline v2f readV2F1000(std::istream &is)
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{
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char buf[8] = {0};
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is.read(buf, 8);
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return readV2F1000((u8*)buf);
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}
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inline void writeV2S16(std::ostream &os, v2s16 p)
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{
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char buf[4];
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writeV2S16((u8*)buf, p);
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os.write(buf, 4);
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}
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inline v2s16 readV2S16(std::istream &is)
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{
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char buf[4] = {0};
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is.read(buf, 4);
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return readV2S16((u8*)buf);
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}
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inline void writeV2S32(std::ostream &os, v2s32 p)
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{
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char buf[8];
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writeV2S32((u8*)buf, p);
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os.write(buf, 8);
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}
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inline v2s32 readV2S32(std::istream &is)
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{
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char buf[8] = {0};
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is.read(buf, 8);
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return readV2S32((u8*)buf);
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}
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inline void writeV3S16(std::ostream &os, v3s16 p)
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{
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char buf[6];
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writeV3S16((u8*)buf, p);
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os.write(buf, 6);
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}
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inline v3s16 readV3S16(std::istream &is)
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{
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char buf[6] = {0};
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is.read(buf, 6);
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return readV3S16((u8*)buf);
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}
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inline void writeARGB8(std::ostream &os, video::SColor p)
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{
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char buf[4];
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writeARGB8((u8*)buf, p);
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os.write(buf, 4);
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}
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inline video::SColor readARGB8(std::istream &is)
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{
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char buf[4] = {0};
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is.read(buf, 4);
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return readARGB8((u8*)buf);
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}
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/*
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More serialization stuff
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*/
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// Creates a string with the length as the first two bytes
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std::string serializeString(const std::string &plain);
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// Creates a string with the length as the first two bytes from wide string
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std::string serializeWideString(const std::wstring &plain);
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// Reads a string with the length as the first two bytes
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std::string deSerializeString(std::istream &is);
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// Reads a wide string with the length as the first two bytes
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std::wstring deSerializeWideString(std::istream &is);
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// Creates a string with the length as the first four bytes
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std::string serializeLongString(const std::string &plain);
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// Reads a string with the length as the first four bytes
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std::string deSerializeLongString(std::istream &is);
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// Creates a string encoded in JSON format (almost equivalent to a C string literal)
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std::string serializeJsonString(const std::string &plain);
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// Reads a string encoded in JSON format
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std::string deSerializeJsonString(std::istream &is);
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// Creates a string containing comma delimited values of a struct whose layout is
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// described by the parameter format
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bool serializeStructToString(std::string *out,
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std::string format, void *value);
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// Reads a comma delimited string of values into a struct whose layout is
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// decribed by the parameter format
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bool deSerializeStringToStruct(std::string valstr,
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std::string format, void *out, size_t olen);
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#endif
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