mirror of
https://github.com/ethereum/go-ethereum.git
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38 lines
704 B
Go
38 lines
704 B
Go
// bzzhash
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package main
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import (
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"fmt"
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"io"
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"os"
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"runtime"
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"github.com/ethereum/go-ethereum/swarm/storage"
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)
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func main() {
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runtime.GOMAXPROCS(runtime.NumCPU())
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if len(os.Args) < 2 {
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fmt.Println("Usage: bzzhash <file name>")
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os.Exit(0)
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}
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f, err := os.Open(os.Args[1])
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if err != nil {
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fmt.Println("Error opening file " + os.Args[1])
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os.Exit(1)
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}
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stat, _ := f.Stat()
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sr := io.NewSectionReader(f, 0, stat.Size())
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chunker := storage.NewTreeChunker(storage.NewChunkerParams())
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hash := make([]byte, chunker.KeySize())
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errC := chunker.Split(hash, sr, nil, nil)
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err, ok := <-errC
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if err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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}
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if !ok {
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fmt.Printf("%064x\n", hash)
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}
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}
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