minetest/src/util/serialize.h

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/*
Minetest-c55
Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef UTIL_SERIALIZE_HEADER
#define UTIL_SERIALIZE_HEADER
#include "../irrlichttypes.h"
#include "../irrlichttypes_bloated.h"
2012-06-17 03:00:31 +02:00
#include "../irr_v2d.h"
#include "../irr_v3d.h"
#include <iostream>
#include <string>
#include "../exceptions.h"
#include "pointer.h"
inline void writeU64(u8 *data, u64 i)
{
data[0] = ((i>>56)&0xff);
data[1] = ((i>>48)&0xff);
data[2] = ((i>>40)&0xff);
data[3] = ((i>>32)&0xff);
data[4] = ((i>>24)&0xff);
data[5] = ((i>>16)&0xff);
data[6] = ((i>> 8)&0xff);
data[7] = ((i>> 0)&0xff);
}
inline void writeU32(u8 *data, u32 i)
{
data[0] = ((i>>24)&0xff);
data[1] = ((i>>16)&0xff);
data[2] = ((i>> 8)&0xff);
data[3] = ((i>> 0)&0xff);
}
inline void writeU16(u8 *data, u16 i)
{
data[0] = ((i>> 8)&0xff);
data[1] = ((i>> 0)&0xff);
}
inline void writeU8(u8 *data, u8 i)
{
data[0] = ((i>> 0)&0xff);
}
inline u64 readU64(u8 *data)
{
return ((u64)data[0]<<56) | ((u64)data[1]<<48)
| ((u64)data[2]<<40) | ((u64)data[3]<<32)
| ((u64)data[4]<<24) | ((u64)data[5]<<16)
| ((u64)data[6]<<8) | ((u64)data[7]<<0);
}
inline u32 readU32(u8 *data)
{
return (data[0]<<24) | (data[1]<<16) | (data[2]<<8) | (data[3]<<0);
}
inline u16 readU16(u8 *data)
{
return (data[0]<<8) | (data[1]<<0);
}
inline u8 readU8(u8 *data)
{
return (data[0]<<0);
}
inline void writeS32(u8 *data, s32 i){
writeU32(data, (u32)i);
}
inline s32 readS32(u8 *data){
return (s32)readU32(data);
}
inline void writeS16(u8 *data, s16 i){
writeU16(data, (u16)i);
}
inline s16 readS16(u8 *data){
return (s16)readU16(data);
}
inline void writeS8(u8 *data, s8 i){
writeU8(data, (u8)i);
}
inline s8 readS8(u8 *data){
return (s8)readU8(data);
}
inline void writeF1000(u8 *data, f32 i){
writeS32(data, i*1000);
}
inline f32 readF1000(u8 *data){
return (f32)readS32(data)/1000.;
}
inline void writeV3S32(u8 *data, v3s32 p)
{
writeS32(&data[0], p.X);
writeS32(&data[4], p.Y);
writeS32(&data[8], p.Z);
}
inline v3s32 readV3S32(u8 *data)
{
v3s32 p;
p.X = readS32(&data[0]);
p.Y = readS32(&data[4]);
p.Z = readS32(&data[8]);
return p;
}
inline void writeV3F1000(u8 *data, v3f p)
{
writeF1000(&data[0], p.X);
writeF1000(&data[4], p.Y);
writeF1000(&data[8], p.Z);
}
inline v3f readV3F1000(u8 *data)
{
v3f p;
p.X = (float)readF1000(&data[0]);
p.Y = (float)readF1000(&data[4]);
p.Z = (float)readF1000(&data[8]);
return p;
}
inline void writeV2F1000(u8 *data, v2f p)
{
writeF1000(&data[0], p.X);
writeF1000(&data[4], p.Y);
}
inline v2f readV2F1000(u8 *data)
{
v2f p;
p.X = (float)readF1000(&data[0]);
p.Y = (float)readF1000(&data[4]);
return p;
}
inline void writeV2S16(u8 *data, v2s16 p)
{
writeS16(&data[0], p.X);
writeS16(&data[2], p.Y);
}
inline v2s16 readV2S16(u8 *data)
{
v2s16 p;
p.X = readS16(&data[0]);
p.Y = readS16(&data[2]);
return p;
}
inline void writeV2S32(u8 *data, v2s32 p)
{
writeS32(&data[0], p.X);
writeS32(&data[2], p.Y);
}
inline v2s32 readV2S32(u8 *data)
{
v2s32 p;
p.X = readS32(&data[0]);
p.Y = readS32(&data[2]);
return p;
}
inline void writeV3S16(u8 *data, v3s16 p)
{
writeS16(&data[0], p.X);
writeS16(&data[2], p.Y);
writeS16(&data[4], p.Z);
}
inline v3s16 readV3S16(u8 *data)
{
v3s16 p;
p.X = readS16(&data[0]);
p.Y = readS16(&data[2]);
p.Z = readS16(&data[4]);
return p;
}
inline void writeARGB8(u8 *data, video::SColor p)
{
writeU8(&data[0], p.getAlpha());
writeU8(&data[1], p.getRed());
writeU8(&data[2], p.getGreen());
writeU8(&data[3], p.getBlue());
}
inline video::SColor readARGB8(u8 *data)
{
video::SColor p;
p.setAlpha(readU8(&data[0]));
p.setRed(readU8(&data[1]));
p.setGreen(readU8(&data[2]));
p.setBlue(readU8(&data[3]));
return p;
}
/*
The above stuff directly interfaced to iostream
*/
inline void writeU8(std::ostream &os, u8 p)
{
char buf[1] = {0};
writeU8((u8*)buf, p);
os.write(buf, 1);
}
inline u8 readU8(std::istream &is)
{
char buf[1] = {0};
is.read(buf, 1);
return readU8((u8*)buf);
}
inline void writeU16(std::ostream &os, u16 p)
{
char buf[2] = {0};
writeU16((u8*)buf, p);
os.write(buf, 2);
}
inline u16 readU16(std::istream &is)
{
char buf[2] = {0};
is.read(buf, 2);
return readU16((u8*)buf);
}
inline void writeU32(std::ostream &os, u32 p)
{
char buf[4] = {0};
writeU32((u8*)buf, p);
os.write(buf, 4);
}
inline u32 readU32(std::istream &is)
{
char buf[4] = {0};
is.read(buf, 4);
return readU32((u8*)buf);
}
inline void writeS32(std::ostream &os, s32 p)
{
char buf[4] = {0};
writeS32((u8*)buf, p);
os.write(buf, 4);
}
inline s32 readS32(std::istream &is)
{
char buf[4] = {0};
is.read(buf, 4);
return readS32((u8*)buf);
}
inline void writeS16(std::ostream &os, s16 p)
{
char buf[2] = {0};
writeS16((u8*)buf, p);
os.write(buf, 2);
}
inline s16 readS16(std::istream &is)
{
char buf[2] = {0};
is.read(buf, 2);
return readS16((u8*)buf);
}
inline void writeS8(std::ostream &os, s8 p)
{
char buf[1] = {0};
writeS8((u8*)buf, p);
os.write(buf, 1);
}
inline s8 readS8(std::istream &is)
{
char buf[1] = {0};
is.read(buf, 1);
return readS8((u8*)buf);
}
inline void writeF1000(std::ostream &os, f32 p)
{
char buf[4] = {0};
writeF1000((u8*)buf, p);
os.write(buf, 4);
}
inline f32 readF1000(std::istream &is)
{
char buf[4] = {0};
is.read(buf, 4);
return readF1000((u8*)buf);
}
inline void writeV3F1000(std::ostream &os, v3f p)
{
char buf[12];
writeV3F1000((u8*)buf, p);
os.write(buf, 12);
}
inline v3f readV3F1000(std::istream &is)
{
char buf[12];
is.read(buf, 12);
return readV3F1000((u8*)buf);
}
inline void writeV2F1000(std::ostream &os, v2f p)
{
char buf[8] = {0};
writeV2F1000((u8*)buf, p);
os.write(buf, 8);
}
inline v2f readV2F1000(std::istream &is)
{
char buf[8] = {0};
is.read(buf, 8);
return readV2F1000((u8*)buf);
}
inline void writeV2S16(std::ostream &os, v2s16 p)
{
char buf[4] = {0};
writeV2S16((u8*)buf, p);
os.write(buf, 4);
}
inline v2s16 readV2S16(std::istream &is)
{
char buf[4] = {0};
is.read(buf, 4);
return readV2S16((u8*)buf);
}
inline void writeV3S16(std::ostream &os, v3s16 p)
{
char buf[6] = {0};
writeV3S16((u8*)buf, p);
os.write(buf, 6);
}
inline v3s16 readV3S16(std::istream &is)
{
char buf[6] = {0};
is.read(buf, 6);
return readV3S16((u8*)buf);
}
inline void writeARGB8(std::ostream &os, video::SColor p)
{
char buf[4] = {0};
writeARGB8((u8*)buf, p);
os.write(buf, 4);
}
inline video::SColor readARGB8(std::istream &is)
{
char buf[4] = {0};
is.read(buf, 4);
return readARGB8((u8*)buf);
}
/*
More serialization stuff
*/
// Creates a string with the length as the first two bytes
inline std::string serializeString(const std::string &plain)
{
//assert(plain.size() <= 65535);
if(plain.size() > 65535)
throw SerializationError("String too long for serializeString");
char buf[2];
writeU16((u8*)&buf[0], plain.size());
std::string s;
s.append(buf, 2);
s.append(plain);
return s;
}
// Creates a string with the length as the first two bytes from wide string
inline std::string serializeWideString(const std::wstring &plain)
{
//assert(plain.size() <= 65535);
if(plain.size() > 65535)
throw SerializationError("String too long for serializeString");
char buf[2];
writeU16((u8*)buf, plain.size());
std::string s;
s.append(buf, 2);
for(u32 i=0; i<plain.size(); i++)
{
writeU16((u8*)buf, plain[i]);
s.append(buf, 2);
}
return s;
}
// Reads a string with the length as the first two bytes
inline std::string deSerializeString(std::istream &is)
{
char buf[2];
is.read(buf, 2);
if(is.gcount() != 2)
throw SerializationError("deSerializeString: size not read");
u16 s_size = readU16((u8*)buf);
if(s_size == 0)
return "";
Buffer<char> buf2(s_size);
is.read(&buf2[0], s_size);
std::string s;
s.reserve(s_size);
s.append(&buf2[0], s_size);
return s;
}
// Reads a wide string with the length as the first two bytes
inline std::wstring deSerializeWideString(std::istream &is)
{
char buf[2];
is.read(buf, 2);
if(is.gcount() != 2)
throw SerializationError("deSerializeString: size not read");
u16 s_size = readU16((u8*)buf);
if(s_size == 0)
return L"";
std::wstring s;
s.reserve(s_size);
for(u32 i=0; i<s_size; i++)
{
is.read(&buf[0], 2);
wchar_t c16 = readU16((u8*)buf);
s.append(&c16, 1);
}
return s;
}
// Creates a string with the length as the first four bytes
inline std::string serializeLongString(const std::string &plain)
{
char buf[4];
writeU32((u8*)&buf[0], plain.size());
std::string s;
s.append(buf, 4);
s.append(plain);
return s;
}
// Reads a string with the length as the first four bytes
inline std::string deSerializeLongString(std::istream &is)
{
char buf[4];
is.read(buf, 4);
if(is.gcount() != 4)
throw SerializationError("deSerializeLongString: size not read");
u32 s_size = readU32((u8*)buf);
if(s_size == 0)
return "";
Buffer<char> buf2(s_size);
is.read(&buf2[0], s_size);
std::string s;
s.reserve(s_size);
s.append(&buf2[0], s_size);
return s;
}
// Creates a string encoded in JSON format (almost equivalent to a C string literal)
std::string serializeJsonString(const std::string &plain);
// Reads a string encoded in JSON format
std::string deSerializeJsonString(std::istream &is);
#endif