Archive

An archive is one addressable unit of an index, and holds one or more TFile records.

EConfigArchive names the archives of the config index, which is where item, object and npc definitions live.

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Archive.Create

function TArchive.Create(id: Integer): TArchive; static;
function TArchive.Create(id, hashName: Integer): TArchive; static; overload;

An empty archive with the given id, and optionally the hash of its name - see CacheString2Hash. A named archive is assumed to be gzipped, which is what the cache uses for everything it names.

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Archive.Read

procedure TArchive.Read(const data: TByteArray);

Splits an archive’s decompressed bytes across the files it holds.

An archive with one file is that file. With more than one, the bytes are interleaved in chunks - a piece of every file, then another piece of every file - and a table at the end gives each piece’s size as a delta from the piece before it. So the sizes are summed in a first pass to allocate each file, and a second pass copies the pieces into place, each file carrying how far into its buffer the next piece goes.