check if the diven directory exists

cmd/app/app.go

@@ -51,7 +51,7 @@ func (a *App) Run() error {
 
 	f, err := os.OpenFile(a.Flags.LogFile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
 	if err != nil {
-		return fmt.Errorf("Error opening log file: %w", err)
+		return fmt.Errorf("opening log file: %w", err)
 	}
 	defer f.Close()
 	log.SetOutput(f)
@@ -101,7 +101,7 @@ func (a *App) setNoCross(path string) error {
 	if a.Flags.NoCross {
 		mounts, err := a.Getter.GetMounts()
 		if err != nil {
-			return fmt.Errorf("Error loading mount points: %w", err)
+			return fmt.Errorf("loading mount points: %w", err)
 		}
 		paths := device.GetNestedMountpointsPaths(path, mounts)
 		a.Flags.IgnoreDirs = append(a.Flags.IgnoreDirs, paths...)
@@ -112,10 +112,12 @@ func (a *App) setNoCross(path string) error {
 func (a *App) runAction(ui common.UI, path string) error {
 	if a.Flags.ShowDisks {
 		if err := ui.ListDevices(a.Getter); err != nil {
-			return fmt.Errorf("Error loading mount points: %w", err)
+			return fmt.Errorf("loading mount points: %w", err)
 		}
 	} else {
-		ui.AnalyzePath(path, nil)
+		if err := ui.AnalyzePath(path, nil); err != nil {
+			return fmt.Errorf("scanning dir: %w", err)
+		}
 	}
 	return nil
 }

cmd/app/app_test.go

@@ -66,6 +66,21 @@ func TestAnalyzePathWithGui(t *testing.T) {
 	assert.Nil(t, err)
 }
 
+func TestAnalyzePathWithErr(t *testing.T) {
+	fin := testdir.CreateTestDir()
+	defer fin()
+
+	out, err := runApp(
+		&Flags{LogFile: "/dev/null"},
+		[]string{"xxx"},
+		false,
+		testdev.DevicesInfoGetterMock{},
+	)
+
+	assert.Equal(t, "", out)
+	assert.Contains(t, err.Error(), "no such file or directory")
+}
+
 func TestNoCross(t *testing.T) {
 	fin := testdir.CreateTestDir()
 	defer fin()
@@ -92,7 +107,7 @@ func TestNoCrossWithErr(t *testing.T) {
 		device.LinuxDevicesInfoGetter{MountsPath: "/xxxyyy"},
 	)
 
-	assert.Equal(t, "Error loading mount points: open /xxxyyy: no such file or directory", err.Error())
+	assert.Equal(t, "loading mount points: open /xxxyyy: no such file or directory", err.Error())
 	assert.Empty(t, out)
 }
 
@@ -122,7 +137,7 @@ func TestListDevicesWithErr(t *testing.T) {
 		device.LinuxDevicesInfoGetter{MountsPath: "/xxxyyy"},
 	)
 
-	assert.Equal(t, "Error loading mount points: open /xxxyyy: no such file or directory", err.Error())
+	assert.Equal(t, "loading mount points: open /xxxyyy: no such file or directory", err.Error())
 }
 
 func TestListDevicesWithGui(t *testing.T) {

cmd/root.go

@@ -83,7 +83,6 @@ func runE(command *cobra.Command, args []string) error {
 // This is called by main.main(). It only needs to happen once to the rootCmd.
 func Execute() {
 	if err := rootCmd.Execute(); err != nil {
-		fmt.Println(err)
 		os.Exit(1)
 	}
 }

common/ui.go

@@ -8,7 +8,7 @@ import (
 // UI is common interface for both terminal UI and text output
 type UI interface {
 	ListDevices(getter device.DevicesInfoGetter) error
-	AnalyzePath(path string, parentDir *analyze.Dir)
+	AnalyzePath(path string, parentDir *analyze.Dir) error
 	SetIgnoreDirPaths(paths []string)
 	StartUILoop() error
 }

internal/testdir/test_dir.go

@@ -1,6 +1,7 @@
 package testdir
 
 import (
+	"io/fs"
 	"os"
 )
 
@@ -16,3 +17,7 @@ func CreateTestDir() func() {
 		}
 	}
 }
+
+func MockedPathChecker(path string) (fs.FileInfo, error) {
+	return nil, nil
+}

stdout/stdout.go

@@ -3,7 +3,9 @@ package stdout
 import (
 	"fmt"
 	"io"
+	"io/fs"
 	"math"
+	"os"
 	"path/filepath"
 	"sort"
 	"sync"
@@ -25,6 +27,7 @@ type UI struct {
 	red              *color.Color
 	orange           *color.Color
 	blue             *color.Color
+	pathChecker      func(string) (fs.FileInfo, error)
 }
 
 // CreateStdoutUI creates UI for stdout
@@ -35,6 +38,7 @@ func CreateStdoutUI(output io.Writer, useColors bool, showProgress bool, showApp
 		showProgress:     showProgress,
 		showApparentSize: showApparentSize,
 		analyzer:         analyze.CreateAnalyzer(),
+		pathChecker:      os.Stat,
 	}
 
 	ui.red = color.New(color.FgRed).Add(color.Bold)
@@ -112,11 +116,17 @@ func (ui *UI) ListDevices(getter device.DevicesInfoGetter) error {
 }
 
 // AnalyzePath analyzes recursively disk usage in given path
-func (ui *UI) AnalyzePath(path string, _ *analyze.Dir) {
+func (ui *UI) AnalyzePath(path string, _ *analyze.Dir) error {
+	var (
+		dir  *analyze.Dir
+		wait sync.WaitGroup
+	)
 	abspath, _ := filepath.Abs(path)
-	var dir *analyze.Dir
 
-	var wait sync.WaitGroup
+	_, err := ui.pathChecker(abspath)
+	if err != nil {
+		return err
+	}
 
 	if ui.showProgress {
 		wait.Add(1)
@@ -166,6 +176,8 @@ func (ui *UI) AnalyzePath(path string, _ *analyze.Dir) {
 				file.GetName())
 		}
 	}
+
+	return nil
 }
 
 // SetIgnoreDirPaths sets paths to ignore

stdout/stdout_test.go

@@ -26,6 +26,17 @@ func TestAnalyzePath(t *testing.T) {
 	assert.Contains(t, output.String(), "nested")
 }
 
+func TestAnalyzePathWithErr(t *testing.T) {
+	buff := make([]byte, 10)
+	output := bytes.NewBuffer(buff)
+
+	ui := CreateStdoutUI(output, false, false, false)
+	ui.SetIgnoreDirPaths([]string{"/xxx"})
+	err := ui.AnalyzePath("aaa", nil)
+
+	assert.Contains(t, err.Error(), "no such file or directory")
+}
+
 func TestAnalyzePathWithColors(t *testing.T) {
 	fin := testdir.CreateTestDir()
 	defer fin()
@@ -45,6 +56,7 @@ func TestItemRows(t *testing.T) {
 
 	ui := CreateStdoutUI(output, false, true, false)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.AnalyzePath("test_dir", nil)
 
 	assert.Contains(t, output.String(), "TiB")

tui/actions.go

@@ -56,9 +56,14 @@ func (ui *UI) ListDevices(getter device.DevicesInfoGetter) error {
 }
 
 // AnalyzePath analyzes recursively disk usage in given path
-func (ui *UI) AnalyzePath(path string, parentDir *analyze.Dir) {
+func (ui *UI) AnalyzePath(path string, parentDir *analyze.Dir) error {
 	abspath, _ := filepath.Abs(path)
 
+	_, err := ui.pathChecker(abspath)
+	if err != nil {
+		return err
+	}
+
 	ui.progress = tview.NewTextView().SetText("Scanning...")
 	ui.progress.SetBorder(true).SetBorderPadding(2, 2, 2, 2)
 	ui.progress.SetTitle(" Scanning... ")
@@ -102,6 +107,8 @@ func (ui *UI) AnalyzePath(path string, parentDir *analyze.Dir) {
 			ui.done <- struct{}{}
 		}
 	}()
+
+	return nil
 }
 
 func (ui *UI) deleteSelected() {

tui/actions_test.go

@@ -96,6 +96,14 @@ func TestAnalyzePath(t *testing.T) {
 	assert.Contains(t, ui.table.GetCell(1, 0).Text, "aaa")
 }
 
+func TestAnalyzePathWithErr(t *testing.T) {
+	app := testapp.CreateMockedApp(true)
+	ui := CreateUI(app, false, true)
+	err := ui.AnalyzePath("xxx", nil)
+
+	assert.Contains(t, err.Error(), "no such file or directory")
+}
+
 func TestAnalyzePathBW(t *testing.T) {
 	ui := getAnalyzedPathMockedApp(t, false, true, true)
 
@@ -115,6 +123,7 @@ func TestAnalyzePathWithParentDir(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, true)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.topDir = parentDir
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", parentDir)
@@ -137,6 +146,7 @@ func TestViewDirContents(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, true)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", nil)
 
@@ -156,6 +166,7 @@ func TestViewContentsOfNotExistingFile(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, true)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", nil)
 

tui/keys_test.go

@@ -132,6 +132,7 @@ func TestShowConfirm(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, true, true)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", nil)
 
@@ -224,6 +225,7 @@ func TestSortByApparentSize(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, false)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", nil)
 
@@ -281,6 +283,7 @@ func TestSorting(t *testing.T) {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, true)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.AnalyzePath("test_dir", nil)
 

tui/sort_test.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/dundee/gdu/v4/internal/testanalyze"
 	"github.com/dundee/gdu/v4/internal/testapp"
+	"github.com/dundee/gdu/v4/internal/testdir"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -114,6 +115,7 @@ func getAnalyzedPathWithSorting(sortBy string, sortOrder string, apparentSize bo
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, false, apparentSize)
 	ui.analyzer = &testanalyze.MockedAnalyzer{}
+	ui.pathChecker = testdir.MockedPathChecker
 	ui.done = make(chan struct{})
 	ui.sortBy = sortBy
 	ui.sortOrder = sortOrder

tui/tui.go

@@ -2,6 +2,8 @@ package tui
 
 import (
 	"fmt"
+	"io/fs"
+	"os"
 	"sort"
 	"time"
 
@@ -65,6 +67,7 @@ type UI struct {
 	showApparentSize bool
 	done             chan struct{}
 	remover          func(*analyze.Dir, analyze.Item) error
+	pathChecker      func(string) (fs.FileInfo, error)
 }
 
 // CreateUI creates the whole UI app
@@ -77,6 +80,7 @@ func CreateUI(app common.TermApplication, useColors bool, showApparentSize bool)
 		showApparentSize: showApparentSize,
 		analyzer:         analyze.CreateAnalyzer(),
 		remover:          analyze.RemoveItemFromDir,
+		pathChecker:      os.Stat,
 	}
 
 	app.SetBeforeDrawFunc(func(screen tcell.Screen) bool {

tui/tui_test.go

@@ -334,6 +334,7 @@ func getDevicesInfoMock() device.DevicesInfoGetter {
 func getAnalyzedPathMockedApp(t *testing.T, useColors, apparentSize bool, mockedAnalyzer bool) *UI {
 	app := testapp.CreateMockedApp(true)
 	ui := CreateUI(app, useColors, apparentSize)
+	ui.pathChecker = testdir.MockedPathChecker
 
 	if mockedAnalyzer {
 		ui.analyzer = &testanalyze.MockedAnalyzer{}