You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
1.7 KiB
76 lines
1.7 KiB
package binary
|
|
|
|
import "io"
|
|
import "bytes"
|
|
|
|
type String string
|
|
type ByteSlice []byte
|
|
|
|
// String
|
|
|
|
func (self String) Equals(other Binary) bool {
|
|
return self == other
|
|
}
|
|
|
|
func (self String) Less(other Binary) bool {
|
|
if o, ok := other.(String); ok {
|
|
return self < o
|
|
} else {
|
|
panic("Cannot compare unequal types")
|
|
}
|
|
}
|
|
|
|
func (self String) ByteSize() int {
|
|
return len(self)+4
|
|
}
|
|
|
|
func (self String) WriteTo(w io.Writer) (n int64, err error) {
|
|
var n_ int
|
|
_, err = UInt32(len(self)).WriteTo(w)
|
|
if err != nil { return n, err }
|
|
n_, err = w.Write([]byte(self))
|
|
return int64(n_+4), err
|
|
}
|
|
|
|
// NOTE: keeps a reference to the original byte slice
|
|
func ReadString(bytes []byte, start int) (String, int) {
|
|
length := int(ReadUInt32(bytes[start:]))
|
|
return String(bytes[start+4:start+4+length]), start+4+length
|
|
}
|
|
|
|
|
|
// ByteSlice
|
|
|
|
func (self ByteSlice) Equals(other Binary) bool {
|
|
if o, ok := other.(ByteSlice); ok {
|
|
return bytes.Equal(self, o)
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
func (self ByteSlice) Less(other Binary) bool {
|
|
if o, ok := other.(ByteSlice); ok {
|
|
return bytes.Compare(self, o) < 0 // -1 if a < b
|
|
} else {
|
|
panic("Cannot compare unequal types")
|
|
}
|
|
}
|
|
|
|
func (self ByteSlice) ByteSize() int {
|
|
return len(self)+4
|
|
}
|
|
|
|
func (self ByteSlice) WriteTo(w io.Writer) (n int64, err error) {
|
|
var n_ int
|
|
_, err = UInt32(len(self)).WriteTo(w)
|
|
if err != nil { return n, err }
|
|
n_, err = w.Write([]byte(self))
|
|
return int64(n_+4), err
|
|
}
|
|
|
|
// NOTE: keeps a reference to the original byte slice
|
|
func ReadByteSlice(bytes []byte, start int) (ByteSlice, int) {
|
|
length := int(ReadUInt32(bytes[start:]))
|
|
return ByteSlice(bytes[start+4:start+4+length]), start+4+length
|
|
}
|