Golang gob.NewEncoder函数代码示例

func TestNodeSnapshotBad(t *testing.T) {
	buf := bytes.NewBuffer([]byte{})
	gob.NewEncoder(buf).Encode(uint64(1))
	seqnPart := buf.String()

	buf = bytes.NewBuffer([]byte{})
	gob.NewEncoder(buf).Encode(emptyDir)
	valPart := buf.String()
	valPart = valPart[0 : len(valPart)/2]

	m := seqnPart + valPart
	n, e := emptyDir.apply(1, m)
	assert.Equal(t, emptyDir, n)
	assert.Equal(t, Event{2, "", "", "", m, io.ErrUnexpectedEOF, n}, e)
}

func (block *Block) GobEncode() ([]byte, error) {
	buffer := bytes.NewBuffer([]byte{})
	encoder := gob.NewEncoder(buffer)

	var err error
	err = encoder.EncodeValue(reflect.ValueOf(gobNodeVersion))
	if err != nil {
		return nil, err
	}

	err = encoder.EncodeValue(reflect.ValueOf(&block.position))
	if err != nil {
		return nil, err
	}
	encoder.EncodeValue(reflect.ValueOf(&block.weak))
	if err != nil {
		return nil, err
	}
	encoder.EncodeValue(reflect.ValueOf(&block.strong))
	if err != nil {
		return nil, err
	}

	return buffer.Bytes(), nil
}

func (k *Key) GobEncode() ([]byte, error) {
	buf := new(bytes.Buffer)
	if err := gob.NewEncoder(buf).Encode(keyToGobKey(k)); err != nil {
		return nil, err
	}
	return buf.Bytes(), nil
}

// Encipher a message
func EncipherMsg(plaintext []byte, pubkey *CipherMsgPubKey) ([]byte, os.Error) {
	msg := &U_CipherMsg{
		Text: make([]byte, len(plaintext)),
	}
	n := copy(msg.Text, plaintext)
	if n != len(plaintext) {
		panic("crypto, copy text")
	}
	urand := NewTimedRand()
	seed := make([]byte, cipherMsgSeedLen)
	n, _ = urand.Read(seed)
	if n != len(seed) {
		panic("crypto,gen seed")
	}
	cseed, err := EncryptShortMsg(pubkey.rsa, seed, []byte(""))
	if err != nil {
		return nil, err
	}
	msg.Seed = cseed
	rc, err := rc4.NewCipher(seed)
	if err != nil {
		panic("rc4tube")
	}
	rc.XORKeyStream(msg.Text)
	var w bytes.Buffer
	enc := gob.NewEncoder(&w)
	err = enc.Encode(msg)
	if err != nil {
		return nil, err
	}
	return w.Bytes(), nil
}

func (server *Server) handleFreezeRequest(freq *freezeRequest, fs *frozenServer) {
	pr, pw := io.Pipe()

	freq.readCloser = pr
	freq.done <- true

	zw, err := gzip.NewWriterLevel(pw, gzip.BestCompression)
	if err != nil {
		if err = pw.CloseWithError(err); err != nil {
			log.Panicf("Unable to close PipeWriter: %v", err.String())
		}
		return
	}

	enc := gob.NewEncoder(zw)
	err = enc.Encode(fs)
	if err != nil {
		if err = pw.CloseWithError(err); err != nil {
			log.Panicf("Unable to close PipeWriter: %v", err.String())
		}
	}

	if err = pw.CloseWithError(zw.Close()); err != nil {
		log.Panicf("Unable to close PipeWriter: %v", err.String())
	}
}

func RetrieveActDetails(c appengine.Context, actId int) (res *ActDetail, err os.Error) {
	var d DSActDetail
	if itm, err := memcache.Get(c, "actId__"+strconv.Itoa(actId)); err != nil && err != memcache.ErrCacheMiss {
		return nil, err
	} else if err == nil {
		// Cache hit
		buf := bytes.NewBuffer(itm.Value)
		dec := gob.NewDecoder(buf)
		dec.Decode(&d)
	} else {
		// Cache miss
		key := datastore.NewKey(c, "DSActDetail", "", int64(actId), nil)
		if err := datastore.Get(c, key, &d); err == datastore.ErrNoSuchEntity {
			return &ActDetail{ActId: actId}, nil
		} else if err != nil {
			return nil, err
		}
		buf := bytes.NewBufferString("")
		enc := gob.NewEncoder(buf)
		enc.Encode(d)

		itm := &memcache.Item{
			Key:   "actId__" + strconv.Itoa(actId),
			Value: buf.Bytes(),
		}

		err = memcache.Set(c, itm)
		c.Debugf("Request cache to memcache")
	}
	return d.fromDS(), nil
}

func (p QueryParameter) Bind(s *Statement, value interface{}) (e os.Error) {
	var rv Errno
	switch v := value.(type) {
	case nil:
		rv = Errno(C.sqlite3_bind_null(s.cptr, C.int(p)))
	case int:
		rv = Errno(C.sqlite3_bind_int(s.cptr, C.int(p), C.int(v)))
	case string:
		rv = Errno(C.gosqlite3_bind_text(s.cptr, C.int(p), C.CString(v), C.int(len(v))))
	case int64:
		rv = Errno(C.sqlite3_bind_int64(s.cptr, C.int(p), C.sqlite3_int64(v)))
	case float32:
		rv = Errno(C.sqlite3_bind_double(s.cptr, C.int(p), C.double(v)))
	case float64:
		rv = Errno(C.sqlite3_bind_double(s.cptr, C.int(p), C.double(v)))
	default:
		buffer := new(bytes.Buffer)
		encoder := gob.NewEncoder(buffer)
		if encoder.Encode(value) != nil {
			rv = ENCODER
		} else {
			rawbuffer := string(buffer.Bytes())
			rv = Errno(C.gosqlite3_bind_blob(s.cptr, C.int(p), unsafe.Pointer(C.CString(rawbuffer)), C.int(len(rawbuffer))))
		}
	}
	if rv != OK {
		e = rv
	}
	return
}

func (c *FlatHaveCache) Save() {
	c.mu.Lock()
	defer c.mu.Unlock()
	if len(c.dirty) == 0 {
		cachelog.Printf("FlatHaveCache: Save, but nothing dirty")
		return
	}

	f, err := os.OpenFile(c.filename, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0600)
	if err != nil {
		log.Fatalf("FlatHaveCache OpenFile: %v", err)
	}
	defer f.Close()
	e := gob.NewEncoder(f)
	write := func(v interface{}) {
		if err := e.Encode(v); err != nil {
			panic("Encode: " + err.String())
		}
	}
	for k, _ := range c.dirty {
		write(k)
	}
	c.dirty = make(map[string]bool)
	cachelog.Printf("FlatHaveCache: saved")
}

func main() {
	data, _ := ioutil.ReadFile("/space/raxml/VINCENT/RAxML_bipartitions.1604.BEST.WITH")

	n, _ := Parse(StringPI(string(data)), 0)
	//n,_ := Parse( StringPI(" (bla:.1,bla2:2.1,(bla32:1.2,bla34:0.7)100:3.4);"), 0 );

	PrintTree(n, os.Stdout)
	fmt.Println()
	PrintTree(n.Back, os.Stdout)
	fmt.Println()

	i := make([]int, 4)
	i[0] = 72
	i[1] = 105
	i[2] = 32
	i[3] = 9731 // Unicode snowman
	var s string = string(i)
	fmt.Printf("%s has length %d bytes.\n", s, len(s))

	buf := bytes.NewBuffer(nil)

	enc := gob.NewEncoder(buf)
	enc.Encode(n)

	os.Stdout.Write(buf.Bytes())
}

func gobMarshal(v interface{}) ([]byte, os.Error) {
	var buf bytes.Buffer
	if err := gob.NewEncoder(&buf).Encode(v); err != nil {
		return nil, err
	}
	return buf.Bytes(), nil
}

func TestRatGobEncoding(t *testing.T) {
	var medium bytes.Buffer
	enc := gob.NewEncoder(&medium)
	dec := gob.NewDecoder(&medium)
	for i, test := range gobEncodingTests {
		for j := 0; j < 4; j++ {
			medium.Reset() // empty buffer for each test case (in case of failures)
			stest := test
			if j&1 != 0 {
				// negative numbers
				stest = "-" + test
			}
			if j%2 != 0 {
				// fractions
				stest = stest + "." + test
			}
			var tx Rat
			tx.SetString(stest)
			if err := enc.Encode(&tx); err != nil {
				t.Errorf("#%d%c: encoding failed: %s", i, 'a'+j, err)
			}
			var rx Rat
			if err := dec.Decode(&rx); err != nil {
				t.Errorf("#%d%c: decoding failed: %s", i, 'a'+j, err)
			}
			if rx.Cmp(&tx) != 0 {
				t.Errorf("#%d%c: transmission failed: got %s want %s", i, 'a'+j, &rx, &tx)
			}
		}
	}
}

func TestSnapshotBad(t *testing.T) {
	buf := bytes.NewBuffer([]byte{})
	gob.NewEncoder(buf).Encode(uint64(1))
	seqnPart := buf.String()

	buf = bytes.NewBuffer([]byte{})
	gob.NewEncoder(buf).Encode(emptyDir)
	valPart := buf.String()
	valPart = valPart[0 : len(valPart)/2]

	st := New()
	st.Ops <- Op{1, seqnPart + valPart}
	st.Sync(1)

	// check that we aren't leaking memory
	assert.Equal(t, 0, len(st.todo))
}

// serialize encodes a session value using gob.
func serialize(session SessionData) ([]byte, error) {
	b := bytes.NewBuffer(nil)
	e := gob.NewEncoder(b)
	if err := e.Encode(session); err != nil {
		return nil, err
	}
	return b.Bytes(), nil
}

func (Tgene *TGene) Save(file io.Writer) {
	enc := gob.NewEncoder(file)
	err := enc.Encode(Tgene)
	if err != nil {
		panic(err.String())
	}
	return
}

func TestMe(t *testing.T) {
	if len(Recipe_list) == 0 {
		t.Error(":(")
	}
	e := gob.NewEncoder(os.Stdout)
	//r := Recipe_list[0]
	e.Encode(Recipe_list)
}