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converter.go
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/
converter.go
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package main
import (
"fmt"
"os"
"strings"
)
//define map of prefixes we can convert, as these are known.
var (
__VERSION__ = "0.1"
prefixMap = map[string]string{
"cosmosaccaddr": "cosmos",
"cosmosaccpub": "cosmospub",
"cosmosvaladdr": "cosmosvaloper",
"cosmosvalpub": "cosmosvaloperpub",
}
)
func welcome() {
//Print a nice little welcome message
fmt.Printf("\nBech32 convertor v%v\nBy Joshua Opaka.\n", __VERSION__)
}
func start(key string) {
//Main application logic
welcome()
//Basic error checking
if key == " " {
usage()
}
if func() (elts []bool) {
for _, x := range prefixMap {
elts = append(elts, strings.HasPrefix(key, x))
}
return
}() == nil {
invalid(key)
}
//Decode existing key
hrp, decodedPubkey := bech32decode(key)
//Error if parsing legacy key failed
if decodedPubkey == false {
invalid(key)
}
//Determine prefix from map
newPrefix := prefixMap[hrp]
//Convert, and display result
x, _ := bech32encode(newPrefix, decodedPubkey.([]int))
fmt.Printf("Old Key: %s\nNew Key: %s\n", key, x)
}
func invalid(key string) {
//Display warning for invalid format key
fmt.Printf("ERROR: %v is an invalid legacy cosmos-sdk bech32 key\n", key)
usage()
}
func usage() {
//Print usage instructions
fmt.Println("Usage:\n\nChange string variable in main file")
os.Exit(255)
}
func bech32encode(hrp string, data []int) (string, error) {
//Encode a bech32 string given prefix and bytearray
converted, _ := convertbits(data, 8, 5, true)
return Encode(hrp, converted)
}
func bech32decode(bech string) (string, interface{}) {
//Decode bech32 string into prefix and bytearray of data
hrp, data, _ := Decode(bech)
//Return early if we couldn't parse the input strin
if data == nil {
return hrp, false
}
converted, _ := convertbits(data, 5, 8, false)
return hrp, converted
}