80 lines
1.4 KiB
Go
80 lines
1.4 KiB
Go
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// Copyright (c) 2015 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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//+build ignore
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package main
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import (
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"bytes"
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"io"
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"log"
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"os"
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"strconv"
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)
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var (
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start = []byte(`// Copyright (c) 2015 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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// AUTOGENERATED by genalphabet.go; do not edit.
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package base58
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const (
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// alphabet is the modified base58 alphabet used by Bitcoin.
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alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
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alphabetIdx0 = '1'
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)
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var b58 = [256]byte{`)
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end = []byte(`}`)
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alphabet = []byte("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz")
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tab = []byte("\t")
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invalid = []byte("255")
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comma = []byte(",")
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space = []byte(" ")
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nl = []byte("\n")
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)
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func write(w io.Writer, b []byte) {
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_, err := w.Write(b)
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if err != nil {
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log.Fatal(err)
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}
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}
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func main() {
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fi, err := os.Create("alphabet.go")
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if err != nil {
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log.Fatal(err)
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}
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defer fi.Close()
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write(fi, start)
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write(fi, nl)
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for i := byte(0); i < 32; i++ {
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write(fi, tab)
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for j := byte(0); j < 8; j++ {
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idx := bytes.IndexByte(alphabet, i*8+j)
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if idx == -1 {
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write(fi, invalid)
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} else {
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write(fi, strconv.AppendInt(nil, int64(idx), 10))
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}
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write(fi, comma)
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if j != 7 {
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write(fi, space)
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}
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}
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write(fi, nl)
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}
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write(fi, end)
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write(fi, nl)
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}
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