122 lines
2.6 KiB
Go
122 lines
2.6 KiB
Go
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"encoding/hex"
|
|
"errors"
|
|
"fmt"
|
|
"github.com/ethereum/ethdb-go"
|
|
"github.com/ethereum/ethutil-go"
|
|
"os"
|
|
"strings"
|
|
)
|
|
|
|
type Console struct {
|
|
db *ethdb.MemDatabase
|
|
trie *ethutil.Trie
|
|
}
|
|
|
|
func NewConsole() *Console {
|
|
db, _ := ethdb.NewMemDatabase()
|
|
trie := ethutil.NewTrie(db, "")
|
|
|
|
return &Console{db: db, trie: trie}
|
|
}
|
|
|
|
func (i *Console) ValidateInput(action string, argumentLength int) error {
|
|
err := false
|
|
var expArgCount int
|
|
|
|
switch {
|
|
case action == "update" && argumentLength != 2:
|
|
err = true
|
|
expArgCount = 2
|
|
case action == "get" && argumentLength != 1:
|
|
err = true
|
|
expArgCount = 1
|
|
case action == "dag" && argumentLength != 2:
|
|
err = true
|
|
expArgCount = 2
|
|
}
|
|
|
|
if err {
|
|
return errors.New(fmt.Sprintf("'%s' requires %d args, got %d", action, expArgCount, argumentLength))
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func (i *Console) ParseInput(input string) bool {
|
|
scanner := bufio.NewScanner(strings.NewReader(input))
|
|
scanner.Split(bufio.ScanWords)
|
|
|
|
count := 0
|
|
var tokens []string
|
|
for scanner.Scan() {
|
|
count++
|
|
tokens = append(tokens, scanner.Text())
|
|
}
|
|
if err := scanner.Err(); err != nil {
|
|
fmt.Fprintln(os.Stderr, "reading input:", err)
|
|
}
|
|
|
|
if len(tokens) == 0 {
|
|
return true
|
|
}
|
|
|
|
err := i.ValidateInput(tokens[0], count-1)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
} else {
|
|
switch tokens[0] {
|
|
case "update":
|
|
i.trie.Update(tokens[1], tokens[2])
|
|
|
|
fmt.Println(hex.EncodeToString([]byte(i.trie.Root)))
|
|
case "get":
|
|
fmt.Println(i.trie.Get(tokens[1]))
|
|
case "root":
|
|
fmt.Println(hex.EncodeToString([]byte(i.trie.Root)))
|
|
case "rawroot":
|
|
fmt.Println(i.trie.Root)
|
|
case "print":
|
|
i.db.Print()
|
|
case "dag":
|
|
fmt.Println(DaggerVerify(ethutil.Big(tokens[1]), // hash
|
|
ethutil.BigPow(2, 36), // diff
|
|
ethutil.Big(tokens[2]))) // nonce
|
|
case "exit", "quit", "q":
|
|
return false
|
|
case "help":
|
|
fmt.Printf("COMMANDS:\n" +
|
|
"\033[1m= DB =\033[0m\n" +
|
|
"update KEY VALUE - Updates/Creates a new value for the given key\n" +
|
|
"get KEY - Retrieves the given key\n" +
|
|
"root - Prints the hex encoded merkle root\n" +
|
|
"rawroot - Prints the raw merkle root\n" +
|
|
"\033[1m= Dagger =\033[0m\n" +
|
|
"dag HASH NONCE - Verifies a nonce with the given hash with dagger\n")
|
|
default:
|
|
fmt.Println("Unknown command:", tokens[0])
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func (i *Console) Start() {
|
|
fmt.Printf("Eth Console. Type (help) for help\n")
|
|
reader := bufio.NewReader(os.Stdin)
|
|
for {
|
|
fmt.Printf("eth >>> ")
|
|
str, _, err := reader.ReadLine()
|
|
if err != nil {
|
|
fmt.Println("Error reading input", err)
|
|
} else {
|
|
if !i.ParseInput(string(str)) {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|