func writeOne(bw *bufio.Writer, x interface{}) error {
switch y := x.(type) {
case bool:
fmt.Fprintf(bw, "%t", y)
case byte:
fmt.Fprintf(bw, "'%c'", y)
case string:
fmt.Fprintf(bw, "\"%s\"", y)
case int, int64:
fmt.Fprintf(bw, "%d", y)
case float32, float64:
fmt.Fprintf(bw, "%f", y)
default:
slice := reflect.ValueOf(x)
if slice.Kind() != reflect.Slice {
return NewErrType(slice.Type())
}
bw.WriteByte('[')
for i := 0; i < slice.Len(); i++ {
if i != 0 {
bw.WriteString(", ")
}
elem := slice.Index(i)
if err := writeOne(bw, elem.Interface()); err != nil {
return err
}
}
bw.WriteByte(']')
}
return nil
}
func (f *FML) writeTo(parentKey string, writer *bufio.Writer) {
for key, val := range f.dict {
fullKey := key
if len(parentKey) != 0 {
fullKey = parentKey + "." + key
}
switch v := val.(type) {
case []*FML:
defer func() {
writeNodeName(fullKey, writer)
for i := 0; i < len(v); i++ {
writer.Write([]byte{'-', ' '})
v[i].writeTo(fullKey, writer)
}
}()
case *FML:
defer func() {
writeNodeName(fullKey, writer)
v.writeTo(fullKey, writer)
}()
default:
//log.Println("write",key)
writer.WriteString(key)
writer.WriteByte(':')
writer.WriteString(wrapVal(v))
//writer.WriteString("after key value")
writer.WriteByte('\n')
}
}
}
func HandshakeSample(c net.Conn, br *bufio.Reader, bw *bufio.Writer, timeout time.Duration) (err error) {
defer func() {
if r := recover(); r != nil {
err = r.(error)
}
}()
// Send C0+C1
err = bw.WriteByte(0x03)
c1 := CreateRandomBlock(RTMP_SIG_SIZE)
for i := 0; i < 8; i++ {
c1[i] = 0
}
bw.Write(c1)
err = bw.Flush()
CheckError(err, "Handshake() Flush C0+C1")
// Read S0+S1+S2
s0, err := br.ReadByte()
CheckError(err, "Handshake() Read S0")
if s0 != 0x03 {
return errors.New(fmt.Sprintf("Handshake() Got S0: %x", s0))
}
s1 := make([]byte, RTMP_SIG_SIZE)
_, err = io.ReadAtLeast(br, s1, RTMP_SIG_SIZE)
CheckError(err, "Handshake() Read S1")
bw.Write(s1)
err = bw.Flush()
CheckError(err, "Handshake() Flush C2")
_, err = io.ReadAtLeast(br, s1, RTMP_SIG_SIZE)
CheckError(err, "Handshake() Read S2")
return
}
// Write embeddings to a binary file accepted by word2vec
func (e *Embeddings) Write(w *bufio.Writer) error {
nWords := len(e.words)
if nWords == 0 {
return nil
}
if e.embedSize == 0 {
return nil
}
if _, err := fmt.Fprintf(w, "%d %d\n", nWords, e.embedSize); err != nil {
return err
}
for idx, word := range e.words {
if _, err := w.WriteString(word + " "); err != nil {
return err
}
if err := binary.Write(w, binary.LittleEndian, e.lookupIdx(idx)); err != nil {
return err
}
w.WriteByte(0x0a)
}
return nil
}
func emit_nocall_ref(start_pos int64, n int64, ref_ain *simplestream.SimpleStream, aout *bufio.Writer) (int64, error) {
end_pos := start_pos + n
for ; start_pos < end_pos; start_pos++ {
if ref_ain.Pos >= ref_ain.N {
if e := ref_ain.Refresh(); e != nil {
return 0, e
}
}
bp := ref_ain.Buf[ref_ain.Pos]
ref_ain.Pos++
switch bp {
case 'a', 'A':
aout.WriteByte('A')
case 'c', 'C':
aout.WriteByte('C')
case 'g', 'G':
aout.WriteByte('G')
case 't', 'T':
aout.WriteByte('T')
default:
aout.WriteByte(bp)
}
gCounter++
}
return start_pos, nil
}
func (r *Replica) bcastCommit(cstruct []int32) {
defer func() {
if err := recover(); err != nil {
dlog.Println("Commit bcast failed:", err)
}
}()
args := &gpaxosproto.Commit{cstruct}
n := r.N - 1
q := r.Id
var w *bufio.Writer
for sent := 0; sent < n; {
q = (q + 1) % int32(r.N)
if q == r.Id {
break
}
if !r.Alive[q] {
continue
}
sent++
w = r.PeerWriters[q]
w.WriteByte(gpaxosproto.COMMIT)
args.Marshal(w)
w.Flush()
}
}
/*
Frame physical write.
*/
func (f *Frame) writeFrame(w *bufio.Writer, l string) error {
// Write the frame Command
if _, e := w.WriteString(f.Command + "\n"); e != nil {
return e
}
// Content length - Always add it if client does not suppress it and
// does not supply it.
if _, ok := f.Headers.Contains("suppress-content-length"); !ok {
if _, clok := f.Headers.Contains("content-length"); !clok {
f.Headers = append(f.Headers, "content-length", strconv.Itoa(len(f.Body)))
}
}
// Write the frame Headers
for i := 0; i < len(f.Headers); i += 2 {
if l > SPL_10 && f.Command != CONNECT {
f.Headers[i] = encode(f.Headers[i])
f.Headers[i+1] = encode(f.Headers[i+1])
}
_, e := w.WriteString(f.Headers[i] + ":" + f.Headers[i+1] + "\n")
if e != nil {
return e
}
}
// Write the last Header LF
if e := w.WriteByte('\n'); e != nil {
return e
}
// Write the body
if len(f.Body) != 0 { // Foolish to write 0 length data
if _, e := w.Write(f.Body); e != nil {
return e
}
}
return nil
}
func (r *Replica) bcastPrepare(replica int32, instance int32, ballot int32) {
defer func() {
if err := recover(); err != nil {
dlog.Println("Prepare bcast failed:", err)
}
}()
args := &gpaxosproto.Prepare{r.Id, instance, ballot}
n := r.N - 1
//TODO: fix quorum size
if r.Thrifty {
n = r.N >> 1
}
q := r.Id
var w *bufio.Writer
for sent := 0; sent < n; {
q = (q + 1) % int32(r.N)
if q == r.Id {
dlog.Println("Not enough replicas alive!")
break
}
if !r.Alive[q] {
continue
}
sent++
w = r.PeerWriters[q]
w.WriteByte(gpaxosproto.PREPARE)
args.Marshal(w)
w.Flush()
}
}
func (r *Replica) bcast2a(balnum int32, cstruct []int32, fast bool) {
defer func() {
if err := recover(); err != nil {
dlog.Println("1a bcast failed:", err)
}
}()
args := &gpaxosproto.M_2a{r.Id, balnum, cstruct}
n := r.N - 1
if r.Thrifty {
if fast {
n = r.fastQSize - 1
} else {
n = r.N >> 1
}
}
q := r.Id
var w *bufio.Writer
for sent := 0; sent < n; {
q = (q + 1) % int32(r.N)
if q == r.Id {
break
}
if !r.Alive[q] {
continue
}
sent++
w = r.PeerWriters[q]
w.WriteByte(gpaxosproto.M2A)
args.Marshal(w)
w.Flush()
}
}
// writeTo serializes the processing instruction to the writer.
func (p *ProcInst) writeTo(w *bufio.Writer) {
w.WriteString("<?")
w.WriteString(p.Target)
w.WriteByte(' ')
w.WriteString(p.Inst)
w.WriteString("?>")
}
/**
* Write long data packet
*/
func (pkt *packetLongData) write(writer *bufio.Writer) (err os.Error) {
// Construct packet header
pkt.header = new(packetHeader)
pkt.header.length = 7 + uint32(len(pkt.data))
pkt.header.sequence = pkt.sequence
err = pkt.header.write(writer)
if err != nil {
return
}
// Write command
err = writer.WriteByte(byte(pkt.command))
if err != nil {
return
}
// Write statement id
err = pkt.writeNumber(writer, uint64(pkt.statementId), 4)
if err != nil {
return
}
// Write param number
err = pkt.writeNumber(writer, uint64(pkt.paramNumber), 2)
if err != nil {
return
}
// Write data
_, err = writer.WriteString(pkt.data)
if err != nil {
return
}
// Flush
err = writer.Flush()
return
}
func (r *AsyncResponse) WriteResponse(buf *bufio.Writer) error {
_, err := buf.WriteString("+ASYNC ")
_, err = buf.WriteString(r.asyncID)
err = buf.WriteByte(' ')
err = r.resp.WriteResponse(buf)
return err
}
func (g *CGIRefVar) WritePastaByte(pasta_ch byte, out *bufio.Writer) {
out.WriteByte(pasta_ch)
g.OCounter++
if (g.LFMod > 0) && (g.OCounter > 0) && ((g.OCounter % g.LFMod) == 0) {
out.WriteByte('\n')
}
}
// writeTo serializes the element to the writer w.
func (e *Element) writeTo(w *bufio.Writer) {
w.WriteByte('<')
if e.Space != "" {
w.WriteString(e.Space)
w.WriteByte(':')
}
w.WriteString(e.Tag)
for _, a := range e.Attr {
w.WriteByte(' ')
a.writeTo(w)
}
if len(e.Child) > 0 {
w.WriteString(">")
for _, c := range e.Child {
c.writeTo(w)
}
w.Write([]byte{'<', '/'})
if e.Space != "" {
w.WriteString(e.Space)
w.WriteByte(':')
}
w.WriteString(e.Tag)
w.WriteByte('>')
} else {
w.Write([]byte{'/', '>'})
}
}
func (p *MsgResponseItem) WriteResponse(buf *bufio.Writer) error {
v := 5
if p.msg.UnlockTs > 0 {
v = 6
}
err := enc.WriteDictSize(buf, v)
_, err = buf.WriteString(" ID ")
err = enc.WriteString(buf, p.msg.StrId)
_, err = buf.WriteString(" PL ")
err = enc.WriteBytes(buf, p.payload)
_, err = buf.WriteString(" ETS ")
err = enc.WriteInt64(buf, p.msg.ExpireTs)
_, err = buf.WriteString(" POPCNT ")
err = enc.WriteInt64(buf, p.msg.PopCount)
_, err = buf.WriteString(" UTS ")
err = enc.WriteInt64(buf, p.msg.UnlockTs)
if p.msg.UnlockTs > 0 {
_, err = buf.WriteString(" RCPT ")
_, err = buf.WriteString(enc.EncodeTo36Base(p.msg.SerialNumber))
err = buf.WriteByte('-')
_, err = buf.WriteString(enc.EncodeTo36Base(uint64(p.msg.PopCount)))
}
return err
}
func groupLs(r *bufio.Reader, w *bufio.Writer, args []string, thisUser *utils.User) (err error) {
if len(args) != 2 {
fmt.Println("Wrong number of arguments for call to group-ls:")
fmt.Println("Format should be: group-ls GID")
return nil
}
err = w.WriteByte(23)
w.Flush()
if err != nil {
return err
}
// send the group id
w.WriteString(args[1] + "\n")
w.Flush()
// get success (1) or fail (2)
success, _ := r.ReadByte()
if success != 1 {
fmt.Println("The group does not exist")
return err
}
// get uuids of the group
result, _ := r.ReadString('\n')
result = strings.TrimSuffix(strings.TrimSpace(result), ",")
fmt.Println("Members of Group " + args[1] + ": " + result)
return err
}
func WriteError(b *bufio.Writer, code int64, text string) error {
_, err := b.WriteString("-ERR ")
err = WriteInt64(b, code)
err = b.WriteByte(' ')
err = WriteString(b, text)
return err
}
func rm(r *bufio.Reader, w *bufio.Writer, currentDir string, args []string) (err error) {
// START SENDCODE BLOCK
err = w.WriteByte(7)
w.Flush()
if err != nil {
panic(err)
}
// END SENDCODE BLOCK
// Send current dir
w.WriteString(currentDir + "\n")
w.Flush()
// send len args
err = w.WriteByte(uint8(len(args)))
w.Flush()
if err != nil {
panic(err)
}
// send each arg (if it exists)
for i := 1; i < len(args); i++ {
w.WriteString(args[i] + "\n")
w.Flush()
}
return err
}
func createGroup(r *bufio.Reader, w *bufio.Writer, args []string, thisUser *utils.User) (err error) {
if len(args) == 1 {
fmt.Println("No arguments for call to create-group.")
return nil
}
err = w.WriteByte(20)
w.Flush()
if err != nil {
return err
}
// send the length of args
err = w.WriteByte(uint8(len(args)))
w.Flush()
if err != nil {
return err
}
for i := 1; i < len(args); i++ {
// send group to create
w.WriteString(args[i] + "\n")
w.Flush()
// get group id to display to user
gid, _ := r.ReadString('\n')
fmt.Println("Created group \"" + args[i] + "\" with id: " + strings.TrimSpace(gid))
}
// send the group to create
return err
}
func deleteGroup(r *bufio.Reader, w *bufio.Writer, args []string, thisUser *utils.User) (err error) {
if len(args) < 2 {
fmt.Println("Not enough arguments for call to group-remove:")
fmt.Println("Format should be: delete-group GID")
return nil
}
err = w.WriteByte(24)
w.Flush()
if err != nil {
return err
}
w.WriteString(args[1] + "\n")
w.Flush()
// get success (1) or fail (2)
success, _ := r.ReadByte()
if success != 1 {
fmt.Println("You cannot remove this group. Does it exist/are you the owner?")
return err
}
fmt.Println("Removed: " + args[1])
return err
}
func WriteDict(b *bufio.Writer, dict map[string]interface{}) error {
err := WriteDictSize(b, len(dict))
if len(dict) == 0 {
return nil
}
for k, v := range dict {
err = b.WriteByte(' ')
err = WriteString(b, k)
err = b.WriteByte(' ')
switch t := v.(type) {
case string:
err = WriteString(b, t)
case int:
err = WriteInt64(b, int64(t))
case int64:
err = WriteInt64(b, t)
case bool:
err = WriteBool(b, t)
}
if err != nil {
break
}
}
return err
}
func WriteBytes(b *bufio.Writer, v []byte) error {
err := b.WriteByte('$')
_, err = b.WriteString(strconv.Itoa(len(v)))
err = b.WriteByte(' ')
_, err = b.Write(v)
return err
}
func newlineStream(dst *bufio.Writer, prefix, indent string, depth int) {
dst.WriteByte('\n')
dst.WriteString(prefix)
for i := 0; i < depth; i++ {
dst.WriteString(indent)
}
}
func writeString(buf *bufio.Writer, str string) {
buf.WriteByte(size_byte)
buf.WriteString(strconv.Itoa(len(str)))
buf.Write(cr_lf)
buf.WriteString(str)
buf.Write(cr_lf)
}
func writeBytes(buf *bufio.Writer, b []byte) {
buf.WriteByte(size_byte)
buf.WriteString(strconv.Itoa(len(b)))
buf.Write(cr_lf)
buf.Write(b)
buf.Write(cr_lf)
}
func (g *FASTAInfo) PastaEnd(out *bufio.Writer) error {
if (g.LFMod > 0) && ((g.OCounter % g.LFMod) != 0) {
out.WriteByte('\n')
}
out.Flush()
return nil
}
func (c *InfoCommand) Encode(w *bufio.Writer) error {
if _, err := w.WriteString("info "); err != nil {
return err
}
if _, err := w.WriteString(c.SetName); err != nil {
return err
}
return w.WriteByte('\n')
}
func (r *Replica) send2b(msg *gpaxosproto.M_2b, w *bufio.Writer) {
w.WriteByte(gpaxosproto.M2B)
msg.Marshal(w)
for _, cid := range msg.Cids {
cmd := r.commands[cid]
cmd.Marshal(w)
}
w.Flush()
}
// writeTo serializes the processing instruction to the writer.
func (p *ProcInst) writeTo(w *bufio.Writer, s *WriteSettings) {
w.WriteString("<?")
w.WriteString(p.Target)
if p.Inst != "" {
w.WriteByte(' ')
w.WriteString(p.Inst)
}
w.WriteString("?>")
}
func (r *MessagesResponse) WriteResponse(buf *bufio.Writer) error {
_, err := buf.WriteString("+MSGS ")
err = enc.WriteArraySize(buf, len(r.items))
for _, item := range r.items {
err = buf.WriteByte(' ')
err = item.WriteResponse(buf)
}
return err
}
