update vendor

vendor/github.com/atomicgo/cursor/utils.go

@@ -0,0 +1,73 @@
+package cursor
+
+var height int
+
+// Bottom moves the cursor to the bottom of the terminal.
+// This is done by calculating how many lines were moved by Up and Down.
+func Bottom() {
+	if height > 0 {
+		Down(height)
+		StartOfLine()
+		height = 0
+	}
+}
+
+// StartOfLine moves the cursor to the start of the current line.
+func StartOfLine() {
+	HorizontalAbsolute(0)
+}
+
+// StartOfLineDown moves the cursor down by n lines, then moves to cursor to the start of the line.
+func StartOfLineDown(n int) {
+	Down(n)
+	StartOfLine()
+}
+
+// StartOfLineUp moves the cursor up by n lines, then moves to cursor to the start of the line.
+func StartOfLineUp(n int) {
+	Up(n)
+	StartOfLine()
+}
+
+// UpAndClear moves the cursor up by n lines, then clears the line.
+func UpAndClear(n int) {
+	Up(n)
+	ClearLine()
+}
+
+// DownAndClear moves the cursor down by n lines, then clears the line.
+func DownAndClear(n int) {
+	Down(n)
+	ClearLine()
+}
+
+// Move moves the cursor relative by x and y.
+func Move(x, y int) {
+	if x > 0 {
+		Right(x)
+	} else if x < 0 {
+		x *= -1
+		Left(x)
+	}
+
+	if y > 0 {
+		Up(y)
+	} else if y < 0 {
+		y *= -1
+		Down(y)
+	}
+}
+
+// ClearLinesUp clears n lines upwards from the current position and moves the cursor.
+func ClearLinesUp(n int) {
+	for i := 0; i < n; i++ {
+		UpAndClear(1)
+	}
+}
+
+// ClearLinesDown clears n lines downwards from the current position and moves the cursor.
+func ClearLinesDown(n int) {
+	for i := 0; i < n; i++ {
+		DownAndClear(1)
+	}
+}