moved db to dev console

1 files changed, 115 insertions, 0 deletions

diff --git a/dev_console.go b/dev_console.go
new file mode 100644
index 000000000..65166c0c1
--- /dev/null
+++ b/dev_console.go
@@ -0,0 +1,115 @@
+package main
+
+import (
+  "fmt"
+  "bufio"
+  "strings"
+  "os"
+  "errors"
+  "encoding/hex"
+)
+
+type Console struct {
+  db *MemDatabase
+  trie *Trie
+}
+
+func NewConsole() *Console {
+  db, _ := NewMemDatabase()
+  trie := 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(Big(tokens[1]), BigPow(2, 36), Big(tokens[2])))
+    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
+      }
+    }
+  }
+}