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