You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
1.6 KiB
Go
92 lines
1.6 KiB
Go
5 months ago
|
package gokb
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/binary"
|
||
|
|
|
||
|
|
"kingbase.com/gokb/oid"
|
||
|
|
)
|
||
|
|
|
||
|
|
type readBuf []byte
|
||
|
|
|
||
|
|
func (b *readBuf) int32() (n int) {
|
||
|
|
n = int(int32(binary.BigEndian.Uint32(*b)))
|
||
|
|
*b = (*b)[4:]
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *readBuf) oid() (n oid.Oid) {
|
||
|
|
n = oid.Oid(binary.BigEndian.Uint32(*b))
|
||
|
|
*b = (*b)[4:]
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// N.B: this is actually an unsigned 16-bit integer, unlike int32
|
||
|
|
func (b *readBuf) int16() (n int) {
|
||
|
|
n = int(binary.BigEndian.Uint16(*b))
|
||
|
|
*b = (*b)[2:]
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *readBuf) string() string {
|
||
|
|
i := bytes.IndexByte(*b, 0)
|
||
|
|
if i < 0 {
|
||
|
|
errorf("invalid message format; expected string terminator")
|
||
|
|
}
|
||
|
|
s := (*b)[:i]
|
||
|
|
*b = (*b)[i+1:]
|
||
|
|
return string(s)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *readBuf) next(n int) (v []byte) {
|
||
|
|
v = (*b)[:n]
|
||
|
|
*b = (*b)[n:]
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *readBuf) byte() byte {
|
||
|
|
return b.next(1)[0]
|
||
|
|
}
|
||
|
|
|
||
|
|
type writeBuf struct {
|
||
|
|
buf []byte
|
||
|
|
pos int
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) int32(n int) {
|
||
|
|
x := make([]byte, 4)
|
||
|
|
binary.BigEndian.PutUint32(x, uint32(n))
|
||
|
|
b.buf = append(b.buf, x...)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) int16(n int) {
|
||
|
|
x := make([]byte, 2)
|
||
|
|
binary.BigEndian.PutUint16(x, uint16(n))
|
||
|
|
b.buf = append(b.buf, x...)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) string(s string) {
|
||
|
|
b.buf = append(append(b.buf, s...), '\000')
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) byte(c byte) {
|
||
|
|
b.buf = append(b.buf, c)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) bytes(v []byte) {
|
||
|
|
b.buf = append(b.buf, v...)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) wrap() []byte {
|
||
|
|
p := b.buf[b.pos:]
|
||
|
|
binary.BigEndian.PutUint32(p, uint32(len(p)))
|
||
|
|
return b.buf
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *writeBuf) next(c byte) {
|
||
|
|
p := b.buf[b.pos:]
|
||
|
|
binary.BigEndian.PutUint32(p, uint32(len(p)))
|
||
|
|
b.pos = len(b.buf) + 1
|
||
|
|
b.buf = append(b.buf, c, 0, 0, 0, 0)
|
||
|
|
}
|