MinecraftBufferCommon.bt

//------------------------------------------------
//--- 010 Editor v10.0 Binary Template
//
//      File: MinecraftBufferCommon
//   Authors: MrNikes
//   Version: 0.0.1
//   Purpose: Minecraft Buffer
//  Category: Misc
// File Mask: 
//  ID Bytes: 
//   History: 
//------------------------------------------------
ubyte read_varint_size()
{
    local int pos = FTell();

    local ubyte size = 0;
    local ubyte i = 0;
    while(true)
    {
        i = ReadUByte(pos + size);
        size++;
        if (!(i & 0x80))
        {
            break;
        }
    }
    return size;
}

typedef struct(ubyte size)
{
    ubyte raw[size];
} Varint <read=ReadVarInt>;

uint64 FromVarint(Varint& n)
{
    local uint64 value = 0;
    local ubyte i = 0;
    local ubyte pos = 0;
    while(true)
    {
        i = n.raw[pos];
        value |= (uint64)(i & 0x7F) << (pos * 7);
        pos++;
        if (!(i & 0x80))
        {
            break;
        }
    }
    return value;
}

string ReadVarInt(Varint& n)
{
    string s;
    SPrintf(s,"varint %Ld", FromVarint(n));
    return s;
}

typedef struct {
    local ubyte size = read_varint_size();
    Varint length(size) <fgcolor=cDkAqua>;
    local int64 value = FromVarint(length);
} VarType <read=ReadVarType>;

string ReadVarType(VarType& n)
{
    string s;
    SPrintf(s,"%Ld", n.value);
    return s;
}

typedef struct {
    local ubyte size = read_varint_size();
    Varint length(size) <fgcolor=cDkAqua>;
    local int64 len = FromVarint(length);
    byte value[len];
} VarBytes;

typedef struct {
    local ubyte size = read_varint_size();
    Varint length(size) <fgcolor=cDkAqua>;
    local int64 len = FromVarint(length);
    int value[len];
} VarIntArray;

typedef struct {
    local ubyte size = read_varint_size();
    Varint length(size) <fgcolor=cDkAqua>;
    local int64 len = FromVarint(length);
    int64 value[len];
} VarLongArray;

typedef struct {
    byte value;
} VarBoolean <read=ReadVarBoolean>;

string ReadVarBoolean(VarBoolean& n)
{
    if (n.value == 0) {
        return "false";
    }
    return "true";
}

typedef struct {
    VarType length;
    byte String[length.value];
} VarString <read=ReadVarString>;

string ReadVarString(VarString& n)
{
    return n.String;
}