vendored https://github.com/WoozyMasta/a2s/blob/master/pkg/a2s/a2s_players.go

internal/a2s/bread/helpers.go

@@ -0,0 +1,37 @@
+package bread
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"fmt"
+)
+
+var (
+	ErrUnderflow = errors.New("buffer underflow: not enough data to read")                  // Error if buffer underflow
+	ErrNumber    = errors.New("failed to read number from buffer")                          // Error with read number
+	ErrBool      = errors.New("unsupported boolean byte in buffer")                         // Error with read boolean
+	ErrString    = errors.New("length of the string from the buffer is less than expected") // Error with read string
+)
+
+// Helper for check bytes in buffer not underflow
+func checkLength(buf *bytes.Buffer, size int) error {
+	if buf.Len() < size {
+		return fmt.Errorf("%w: got %d of expected %d bytes", ErrUnderflow, buf.Len(), size)
+	}
+
+	return nil
+}
+
+// Helper for read number in LittleEndian
+func readNumber(buf *bytes.Buffer, data any, size int) error {
+	if buf.Len() < size {
+		return fmt.Errorf("%w: got %d of expected %d bytes", ErrUnderflow, buf.Len(), size)
+	}
+
+	if err := binary.Read(buf, binary.LittleEndian, data); err != nil {
+		return fmt.Errorf("%w: %w", ErrNumber, err)
+	}
+
+	return nil
+}