CPakFile.bt

#ifndef _CPAKFILE
#define _CPAKFILE
struct File;
struct CPakFile;

typedef struct
{
    FourCC type;
    GUID id;
    if (!isDKCTF)
    {
        uint32 versionA;
        uint32 versionB;
    }
    uint64 offset <format=hex>;
    if (!isDKCTF)
    {
        uint64 decompressedSize <format=hex>;
    }
    uint64 size <format=hex>;
    if (isDKCTF)
    {
        local uint64 decompressedSize <hidden=true> = size;
    }

    local uint64 pos <format=hex, hidden=true> = FTell();
    FSeek(offset);
    if (size == decompressedSize) {
        File data <size=size>;
    } else {
        CompressionType compressionType;
        byte pad[3] <hidden=true>;
        byte compressedData[size - 4];
    }
    FSeek(pos);
} AssetDirectoryEntry <
    size=(isDKCTF ? 36 : 52), // Parse on-demand
    name=AssetDirectoryEntryName,
    comment=(SizeComment(this.size))
>;

string AssetDirectoryEntryName(AssetDirectoryEntry& entry)
{
    if (isDKCTF) {
        // Read the chunk ver and subver from form descriptor
        return Str("%s v%d.%d %s", entry.type, entry.data.form.readerVersion, entry.data.form.writerVersion, GUIDToString(entry.id)); //Fix broken DKCTF version display
    } else {
        return Str("%s v%d.%d %s", entry.type, entry.versionA, entry.versionB, GUIDToString(entry.id));
    }
}

typedef struct
{
    GUID id;
    uint32 offset <format=hex>;

    // Find the FourCC for the asset ID
    // Assumes TOCC chunk 0 is ADIR
    local FourCC type <hidden=true>;
    local uint64 fileOffset <hidden=true>;
    local uint32 i <hidden=true>;
    for (i = 0; i < pak.chunk[0].count; i++) {
        if (pak.chunk[0].entry[i].id == id) {
            type = pak.chunk[0].entry[i].type;
            fileOffset = pak.chunk[0].entry[i].offset;
            break;
        }
    }

    local uint64 pos <format=hex, hidden=true> = FTell();
    FSeek(start + offset);
    uint32 size <format=hex>;
    Meta data(type, size, fileOffset);
    FSeek(pos);
} MetaEntry <
    size=20, // Parse on-demand
    name=(Str("%s %s", this.type, GUIDToString(this.id))),
    comment=(SizeComment(size))
>;

typedef struct
{
    // Byteswapped
    uint32 type <read=FourCCInt>;
    GUID id;
    // Wii U DKCTF uses a null terminated string here
    // but PACK/TOCC version is the same
    if (!isDKCTF || ReadByte() == 0) {
        uint32 length;
        char name[length];
    } else {
        string name;
    }
} StringEntry <
    name=(Str("%s (%s) %s", name, FourCCInt(type), GUIDToString(id)))
>;

typedef struct(CPakFile& pak)
{
    ChunkDescriptor chunk;
    local uint64 start <format=hex, hidden=true> = FTell();
    switch (chunk.id)
    {
        case "ADIR":
            uint32 count <format=decimal, name="ADIR entry count">;
            AssetDirectoryEntry entry[count] <optimize=false>;
            break;
        case "META":
            uint32 count <format=decimal, name="META entry count">;
            MetaEntry entry[count] <optimize=false>;
            break;
        case "STRG":
            uint32 count <format=decimal, name="STRG entry count">;
            StringEntry entry[count] <optimize=false>;
            break;
    }
    FSeek(start + chunk.size);
} TOCChunk <
    name=(Str("%s chunk", chunk.id)),
    comment=(Str("%d entries", count))
>;

typedef struct
{
    FormDescriptor toc;
    local uint64 start <format=hex, hidden=true> = FTell(); 
    while (FTell() < start + toc.size)
    {
        TOCChunk chunk(this);
    }
} CPakFile <name="PACK chunks">;


#endif// _CPAKFILE