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37 lines
724 B
Go
37 lines
724 B
Go
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// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package drpcwire
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// SplitN splits the marshaled form of the Packet into a number of
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// frames such that each frame is at most n bytes. It calls
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// the callback with every such frame. If n is zero, a default of
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// 1024 is used.
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func SplitN(pkt Packet, n int, cb func(fr Frame) error) error {
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switch {
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case n == 0:
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n = 1024
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case n < 0:
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n = 0
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}
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for {
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fr := Frame{
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Data: pkt.Data,
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ID: pkt.ID,
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Kind: pkt.Kind,
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Done: true,
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}
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if len(pkt.Data) > n && n > 0 {
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fr.Data, pkt.Data = pkt.Data[:n], pkt.Data[n:]
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fr.Done = false
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}
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if err := cb(fr); err != nil {
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return err
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}
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if fr.Done {
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return nil
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}
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}
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}
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