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77 lines
1.4 KiB
77 lines
1.4 KiB
// 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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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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// Ciphers is the modified base58 alphabet used by Bitcoin. |
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Ciphers = "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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