Caleb Gardner
27 lines
564 B
Go
27 lines
564 B
Go
package squashfs
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import (
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"bytes"
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"io"
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"github.com/CalebQ42/squashfs/internal/toreader"
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)
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type fragEntry struct {
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Start uint64
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Size uint32
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_ uint32
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}
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func (r Reader) fragReader(index uint32, fragSize uint32) (io.Reader, error) {
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realSize := r.fragEntries[index].Size &^ (1 << 24)
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if realSize == 0 {
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return bytes.NewReader(make([]byte, fragSize)), nil
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}
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rdr := io.LimitReader(toreader.NewReader(r.r, int64(r.fragEntries[index].Start)), int64(realSize))
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if realSize != r.fragEntries[index].Size {
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return rdr, nil
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}
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return r.d.Reader(rdr)
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}
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