Merge branch 'release/0.3.0' into develop

ethdb/database.go

@@ -54,13 +54,19 @@ func (db *LDBDatabase) LastKnownTD() []byte {
 	return data
 }
 
+func (db *LDBDatabase) GetKeys() []*ethutil.Key {
+	data, _ := db.Get([]byte("KeyRing"))
+
+	return []*ethutil.Key{ethutil.NewKeyFromBytes(data)}
+}
+
 func (db *LDBDatabase) Close() {
 	// Close the leveldb database
 	db.db.Close()
 }
 
 func (db *LDBDatabase) Print() {
-	iter := db.db.NewIterator(nil)
+	iter := db.db.NewIterator(nil, nil)
 	for iter.Next() {
 		key := iter.Key()
 		value := iter.Value()

ethdb/memory_database.go

@@ -26,6 +26,12 @@ func (db *MemDatabase) Get(key []byte) ([]byte, error) {
 	return db.db[string(key)], nil
 }
 
+func (db *MemDatabase) GetKeys() []*ethutil.Key {
+	data, _ := db.Get([]byte("KeyRing"))
+
+	return []*ethutil.Key{ethutil.NewKeyFromBytes(data)}
+}
+
 func (db *MemDatabase) Delete(key []byte) error {
 	delete(db.db, string(key))
 

ethutil/README.md

@@ -53,6 +53,8 @@ trie.Put("doge", "coin")
 // Look up the key "do" in the trie
 out := trie.Get("do")
 fmt.Println(out) // => verb
+
+trie.Delete("puppy")
 ```
 
 The patricia trie, in combination with RLP, provides a robust,
@@ -82,7 +84,7 @@ type (e.g. `Slice()` returns []interface{}, `Uint()` return 0, etc).
 `NewEmptyValue()` returns a new \*Value with it's initial value set to a
 `[]interface{}`
 
-`AppendLint()` appends a list to the current value.
+`AppendList()` appends a list to the current value.
 
 `Append(v)` appends the value (v) to the current value/list.
 

ethutil/big.go

@@ -41,3 +41,12 @@ func BigToBytes(num *big.Int, base int) []byte {
 
 	return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
 }
+
+// Functions like the build in "copy" function
+// but works on big integers
+func BigCopy(src *big.Int) (ret *big.Int) {
+	ret = new(big.Int)
+	ret.Add(ret, src)
+
+	return
+}

ethutil/db.go

@@ -4,6 +4,7 @@ package ethutil
 type Database interface {
 	Put(key []byte, value []byte)
 	Get(key []byte) ([]byte, error)
+	GetKeys() []*Key
 	Delete(key []byte) error
 	LastKnownTD() []byte
 	Close()

ethutil/key.go

@@ -0,0 +1,19 @@
+package ethutil
+
+type Key struct {
+	PrivateKey []byte
+	PublicKey  []byte
+}
+
+func NewKeyFromBytes(data []byte) *Key {
+	val := NewValueFromBytes(data)
+	return &Key{val.Get(0).Bytes(), val.Get(1).Bytes()}
+}
+
+func (k *Key) Address() []byte {
+	return Sha3Bin(k.PublicKey[1:])[12:]
+}
+
+func (k *Key) RlpEncode() []byte {
+	return EmptyValue().Append(k.PrivateKey).Append(k.PublicKey).Encode()
+}

ethutil/trie_test.go

@@ -25,6 +25,7 @@ func (db *MemDatabase) Delete(key []byte) error {
 	delete(db.db, string(key))
 	return nil
 }
+func (db *MemDatabase) GetKeys() []*Key     { return nil }
 func (db *MemDatabase) Print()              {}
 func (db *MemDatabase) Close()              {}
 func (db *MemDatabase) LastKnownTD() []byte { return nil }