mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-11-18 02:16:23 -05:00
70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
|
package d2common
|
||
|
|
|
||
|
|
// StreamWriter allows you to create a byte array by streaming in writes of various sizes
|
||
|
|
type StreamWriter struct {
|
||
|
|
data []byte
|
||
|
|
}
|
||
|
|
|
||
|
|
// CreateStreamWriter creates a new StreamWriter instance
|
||
|
|
func CreateStreamWriter() *StreamWriter {
|
||
|
|
result := &StreamWriter{
|
||
|
|
data: make([]byte, 0),
|
||
|
|
}
|
||
|
|
return result
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushByte writes a byte to the stream
|
||
|
|
func (v *StreamWriter) PushByte(val byte) {
|
||
|
|
v.data = append(v.data, val)
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushUint16 writes an uint16 word to the stream
|
||
|
|
func (v *StreamWriter) PushUint16(val uint16) {
|
||
|
|
v.data = append(v.data, byte(val&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>8)&0xFF))
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushInt16 writes a int16 word to the stream
|
||
|
|
func (v *StreamWriter) PushInt16(val int16) {
|
||
|
|
v.data = append(v.data, byte(val&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>8)&0xFF))
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushUint32 writes a uint32 dword to the stream
|
||
|
|
func (v *StreamWriter) PushUint32(val uint32) {
|
||
|
|
v.data = append(v.data, byte(val&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>8)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>16)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>24)&0xFF))
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushUint64 writes a uint64 qword to the stream
|
||
|
|
func (v *StreamWriter) PushUint64(val uint64) {
|
||
|
|
v.data = append(v.data, byte(val&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>8)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>16)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>24)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>32)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>40)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>48)&0xFF))
|
||
|
|
v.data = append(v.data, byte((val>>56)&0xFF))
|
||
|
|
}
|
||
|
|
|
||
|
|
// PushInt64 writes a uint64 qword to the stream
|
||
|
|
func (v *StreamWriter) PushInt64(val int64) {
|
||
|
|
result := uint64(val)
|
||
|
|
v.data = append(v.data, byte(result&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>8)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>16)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>24)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>32)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>40)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>48)&0xFF))
|
||
|
|
v.data = append(v.data, byte((result>>56)&0xFF))
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetBytes returns the the byte slice of the underlying data
|
||
|
|
func (v *StreamWriter) GetBytes() []byte {
|
||
|
|
return v.data
|
||
|
|
}
|