wehub-resource-sync
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// Copyright 2023 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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"strconv"
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"github.com/dolthub/dolt/go/store/hash"
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)
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// hasher is a simple utility for converting between dolt base32 hashes and raw bytes. If you give it one argument,
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// the assumption is that it's a hash:
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//
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// $ hasher 201orjntip8jb6annkfsmiue9h4309k9
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// [16 3 141 206 253 150 81 53 153 87 189 31 203 75 206 76 72 48 38 137]
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//
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// If you give it multiple arguments, the assumption is that they're bytes. if you only specify a few bytes, the
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// tail will be 0s:
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//
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// $ hasher 16 3 141 206 253 150
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// 201orjnt000000000000000000000000
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//
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// Why? When you are looking at a byte array in the debugger and you need to know if it's a specific hash this
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// can help. base32 conversion in your head no longer required, which is what aaron always does.
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func main() {
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if len(os.Args) == 1 {
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fmt.Println("Usage: hasher <hash> OR hasher <uint8> <uint8> ...")
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return
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}
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if len(os.Args) == 2 {
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PrintHashToBytes(os.Args[1], os.Stdout)
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} else {
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PrintBytesToHash(os.Args[1:], os.Stdout)
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}
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}
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func PrintBytesToHash(args []string, out io.Writer) {
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var raw hash.Hash
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if len(args) > hash.ByteLen {
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fmt.Fprintln(out, "Too many bytes given.")
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return
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}
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for i, arg := range args {
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val, err := strconv.ParseUint(arg, 10, 8)
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if err != nil {
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fmt.Fprintln(out, err)
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return
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}
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raw[i] = uint8(val)
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}
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fmt.Fprintf(out, "%v\n", raw)
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}
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func PrintHashToBytes(arg string, out io.Writer) {
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hashStr := arg
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if !hash.IsValid(hashStr) {
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fmt.Fprintln(out, "Invalid hash")
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return
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}
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h := hash.Parse(hashStr)
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fmt.Fprintf(out, "%v\n", h[:])
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}
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