66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
package etw
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import (
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"bytes"
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"encoding/binary"
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)
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// EventData maintains a buffer which builds up the data for an ETW event. It
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// needs to be paired with EventMetadata which describes the event.
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type EventData struct {
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buffer bytes.Buffer
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}
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// Bytes returns the raw binary data containing the event data. The returned
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// value is not copied from the internal buffer, so it can be mutated by the
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// EventData object after it is returned.
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func (ed *EventData) Bytes() []byte {
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return ed.buffer.Bytes()
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}
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// WriteString appends a string, including the null terminator, to the buffer.
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func (ed *EventData) WriteString(data string) {
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ed.buffer.WriteString(data)
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ed.buffer.WriteByte(0)
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}
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// WriteInt8 appends a int8 to the buffer.
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func (ed *EventData) WriteInt8(value int8) {
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ed.buffer.WriteByte(uint8(value))
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}
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// WriteInt16 appends a int16 to the buffer.
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func (ed *EventData) WriteInt16(value int16) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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// WriteInt32 appends a int32 to the buffer.
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func (ed *EventData) WriteInt32(value int32) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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// WriteInt64 appends a int64 to the buffer.
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func (ed *EventData) WriteInt64(value int64) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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// WriteUint8 appends a uint8 to the buffer.
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func (ed *EventData) WriteUint8(value uint8) {
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ed.buffer.WriteByte(value)
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}
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// WriteUint16 appends a uint16 to the buffer.
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func (ed *EventData) WriteUint16(value uint16) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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// WriteUint32 appends a uint32 to the buffer.
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func (ed *EventData) WriteUint32(value uint32) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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// WriteUint64 appends a uint64 to the buffer.
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func (ed *EventData) WriteUint64(value uint64) {
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binary.Write(&ed.buffer, binary.LittleEndian, value)
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}
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