46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
package d2mpq
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import "io"
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// Hash represents a hashed file entry in the MPQ file
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type Hash struct { // 16 bytes
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A uint32
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B uint32
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Locale uint16
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Platform uint16
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BlockIndex uint32
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}
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// Name64 returns part A and B as uint64
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func (h *Hash) Name64() uint64 {
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return uint64(h.A)<<32 | uint64(h.B)
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}
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//nolint:gomnd // number
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func (mpq *MPQ) readHashTable() error {
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if _, err := mpq.file.Seek(int64(mpq.header.HashTableOffset), io.SeekStart); err != nil {
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return err
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}
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hashData, err := decryptTable(mpq.file, mpq.header.HashTableEntries, "(hash table)")
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if err != nil {
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return err
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}
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mpq.hashes = make(map[uint64]*Hash)
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for n, i := uint32(0), uint32(0); i < mpq.header.HashTableEntries; n, i = n+4, i+1 {
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e := &Hash{
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A: hashData[n],
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B: hashData[n+1],
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// https://github.com/OpenDiablo2/OpenDiablo2/issues/812
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Locale: uint16(hashData[n+2] >> 16), //nolint:gomnd // // binary data
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Platform: uint16(hashData[n+2] & 0xFFFF), //nolint:gomnd // // binary data
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BlockIndex: hashData[n+3],
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}
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mpq.hashes[e.Name64()] = e
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}
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return nil
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}
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