joy4/util.go
2013-03-17 23:41:45 +08:00

114 lines
1.7 KiB
Go

package rtmp
import (
"io"
"log"
"os"
"fmt"
"strings"
)
type dummyWriter struct {
}
func (m *dummyWriter) Write(p []byte) (n int, err error) {
return 0, nil
}
type logger int
func (l logger) Printf(format string, v ...interface{}) {
str := fmt.Sprintf(format, v...)
switch {
case strings.HasPrefix(str, "server") && l >= 0,
strings.HasPrefix(str, "stream") && l >= 0,
strings.HasPrefix(str, "event") && l >= 0,
strings.HasPrefix(str, "data") && l >= 0,
strings.HasPrefix(str, "msg") && l >= 1:
l2.Println(str)
}
}
var (
dummyW = &dummyWriter{}
l = logger(0)
l2 *log.Logger
)
func init() {
l2 = log.New(os.Stderr, "", 0)
l2.SetFlags(log.Lmicroseconds)
}
type stream struct {
r io.ReadWriteCloser
}
func (s stream) Read(p []byte) (n int, err error) {
n, err = s.r.Read(p)
if err != nil {
panic(err)
}
return
}
func (s stream) Write(p []byte) (n int, err error) {
n, err = s.r.Write(p)
if err != nil {
panic(err)
}
return
}
func (s stream) Close() {
s.r.Close()
}
func ReadBuf(r io.Reader, n int) (b []byte) {
b = make([]byte, n)
r.Read(b)
return
}
func ReadInt(r io.Reader, n int) (ret int) {
b := ReadBuf(r, n)
for i := 0; i < n; i++ {
ret <<= 8
ret += int(b[i])
}
return
}
func ReadIntLE(r io.Reader, n int) (ret int) {
b := ReadBuf(r, n)
for i := 0; i < n; i++ {
ret <<= 8
ret += int(b[n-i-1])
}
return
}
func WriteBuf(w io.Writer, buf []byte) {
w.Write(buf)
}
func WriteInt(w io.Writer, v int, n int) {
b := make([]byte, n)
for i := 0; i < n; i++ {
b[n-i-1] = byte(v&0xff)
v >>= 8
}
WriteBuf(w, b)
}
func WriteIntLE(w io.Writer, v int, n int) {
b := make([]byte, n)
for i := 0; i < n; i++ {
b[i] = byte(v&0xff)
v >>= 8
}
WriteBuf(w, b)
}