dex/vendor/github.com/lib/pq/buf.go
2016-03-09 13:04:05 -08:00

73 lines
1.2 KiB
Go

package pq
import (
"bytes"
"encoding/binary"
"github.com/lib/pq/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
}
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 []byte
func (b *writeBuf) int32(n int) {
x := make([]byte, 4)
binary.BigEndian.PutUint32(x, uint32(n))
*b = append(*b, x...)
}
func (b *writeBuf) int16(n int) {
x := make([]byte, 2)
binary.BigEndian.PutUint16(x, uint16(n))
*b = append(*b, x...)
}
func (b *writeBuf) string(s string) {
*b = append(*b, (s + "\000")...)
}
func (b *writeBuf) byte(c byte) {
*b = append(*b, c)
}
func (b *writeBuf) bytes(v []byte) {
*b = append(*b, v...)
}