termstatus: move cursor handling to terminal package

cmd/restic/global.go

@@ -33,8 +33,8 @@ import (
 	"github.com/restic/restic/internal/options"
 	"github.com/restic/restic/internal/repository"
 	"github.com/restic/restic/internal/restic"
+	"github.com/restic/restic/internal/terminal"
 	"github.com/restic/restic/internal/textfile"
-	"github.com/restic/restic/internal/ui/termstatus"
 	"github.com/spf13/pflag"
 
 	"github.com/restic/restic/internal/errors"
@@ -210,7 +210,7 @@ func stdoutIsTerminal() bool {
 }
 
 func stdoutCanUpdateStatus() bool {
-	return termstatus.CanUpdateStatus(os.Stdout.Fd())
+	return terminal.CanUpdateStatus(os.Stdout.Fd())
 }
 
 func stdoutTerminalWidth() int {

internal/terminal/terminal_posix.go

@@ -1,4 +1,4 @@
-package termstatus
+package terminal
 
 import (
 	"bytes"
@@ -8,16 +8,16 @@ import (
 )
 
 const (
-	posixControlMoveCursorHome = "\r"
-	posixControlMoveCursorUp   = "\x1b[1A"
-	posixControlClearLine      = "\x1b[2K"
+	PosixControlMoveCursorHome = "\r"
+	PosixControlMoveCursorUp   = "\x1b[1A"
+	PosixControlClearLine      = "\x1b[2K"
 )
 
 // posixClearCurrentLine removes all characters from the current line and resets the
 // cursor position to the first column.
-func posixClearCurrentLine(wr io.Writer, _ uintptr) {
+func PosixClearCurrentLine(wr io.Writer, _ uintptr) {
 	// clear current line
-	_, err := wr.Write([]byte(posixControlMoveCursorHome + posixControlClearLine))
+	_, err := wr.Write([]byte(PosixControlMoveCursorHome + PosixControlClearLine))
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "write failed: %v\n", err)
 		return
@@ -25,9 +25,9 @@ func posixClearCurrentLine(wr io.Writer, _ uintptr) {
 }
 
 // posixMoveCursorUp moves the cursor to the line n lines above the current one.
-func posixMoveCursorUp(wr io.Writer, _ uintptr, n int) {
-	data := []byte(posixControlMoveCursorHome)
-	data = append(data, bytes.Repeat([]byte(posixControlMoveCursorUp), n)...)
+func PosixMoveCursorUp(wr io.Writer, _ uintptr, n int) {
+	data := []byte(PosixControlMoveCursorHome)
+	data = append(data, bytes.Repeat([]byte(PosixControlMoveCursorUp), n)...)
 	_, err := wr.Write(data)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "write failed: %v\n", err)

internal/terminal/terminal_unix.go

@@ -1,7 +1,7 @@
 //go:build !windows
 // +build !windows
 
-package termstatus
+package terminal
 
 import (
 	"io"
@@ -12,13 +12,13 @@ import (
 
 // clearCurrentLine removes all characters from the current line and resets the
 // cursor position to the first column.
-func clearCurrentLine(_ uintptr) func(io.Writer, uintptr) {
-	return posixClearCurrentLine
+func ClearCurrentLine(_ uintptr) func(io.Writer, uintptr) {
+	return PosixClearCurrentLine
 }
 
 // moveCursorUp moves the cursor to the line n lines above the current one.
-func moveCursorUp(_ uintptr) func(io.Writer, uintptr, int) {
-	return posixMoveCursorUp
+func MoveCursorUp(_ uintptr) func(io.Writer, uintptr, int) {
+	return PosixMoveCursorUp
 }
 
 // CanUpdateStatus returns true if status lines can be printed, the process

internal/terminal/terminal_windows.go

@@ -1,7 +1,7 @@
 //go:build windows
 // +build windows
 
-package termstatus
+package terminal
 
 import (
 	"io"
@@ -15,25 +15,25 @@ import (
 
 // clearCurrentLine removes all characters from the current line and resets the
 // cursor position to the first column.
-func clearCurrentLine(fd uintptr) func(io.Writer, uintptr) {
+func ClearCurrentLine(fd uintptr) func(io.Writer, uintptr) {
 	// easy case, the terminal is cmd or psh, without redirection
 	if isWindowsTerminal(fd) {
 		return windowsClearCurrentLine
 	}
 
 	// assume we're running in mintty/cygwin
-	return posixClearCurrentLine
+	return PosixClearCurrentLine
 }
 
 // moveCursorUp moves the cursor to the line n lines above the current one.
-func moveCursorUp(fd uintptr) func(io.Writer, uintptr, int) {
+func MoveCursorUp(fd uintptr) func(io.Writer, uintptr, int) {
 	// easy case, the terminal is cmd or psh, without redirection
 	if isWindowsTerminal(fd) {
 		return windowsMoveCursorUp
 	}
 
 	// assume we're running in mintty/cygwin
-	return posixMoveCursorUp
+	return PosixMoveCursorUp
 }
 
 var kernel32 = syscall.NewLazyDLL("kernel32.dll")

internal/terminal/terminal_windows_test.go

@@ -1,4 +1,4 @@
-package termstatus
+package terminal
 
 import (
 	"syscall"

internal/ui/termstatus/status.go

@@ -69,12 +69,12 @@ func New(wr io.Writer, errWriter io.Writer, disableStatus bool) *Terminal {
 		return t
 	}
 
-	if d, ok := wr.(fder); ok && CanUpdateStatus(d.Fd()) {
+	if d, ok := wr.(fder); ok && terminal.CanUpdateStatus(d.Fd()) {
 		// only use the fancy status code when we're running on a real terminal.
 		t.canUpdateStatus = true
 		t.fd = d.Fd()
-		t.clearCurrentLine = clearCurrentLine(t.fd)
-		t.moveCursorUp = moveCursorUp(t.fd)
+		t.clearCurrentLine = terminal.ClearCurrentLine(t.fd)
+		t.moveCursorUp = terminal.MoveCursorUp(t.fd)
 	}
 
 	return t

internal/ui/termstatus/status_test.go

@@ -8,6 +8,7 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/restic/restic/internal/terminal"
 	rtest "github.com/restic/restic/internal/test"
 )
 
@@ -17,16 +18,16 @@ func TestSetStatus(t *testing.T) {
 
 	term.canUpdateStatus = true
 	term.fd = ^uintptr(0)
-	term.clearCurrentLine = posixClearCurrentLine
-	term.moveCursorUp = posixMoveCursorUp
+	term.clearCurrentLine = terminal.PosixClearCurrentLine
+	term.moveCursorUp = terminal.PosixMoveCursorUp
 
 	ctx, cancel := context.WithCancel(context.Background())
 	go term.Run(ctx)
 
 	const (
-		cl   = posixControlClearLine
-		home = posixControlMoveCursorHome
-		up   = posixControlMoveCursorUp
+		cl   = terminal.PosixControlClearLine
+		home = terminal.PosixControlMoveCursorHome
+		up   = terminal.PosixControlMoveCursorUp
 	)
 
 	term.SetStatus([]string{"first"})