modernize some code

Results of running the modernize command, with some minor changes
afterwards (removing the `contains` and `hasStatus` helper functions);

    go install golang.org/x/tools/go/analysis/passes/modernize/cmd/modernize@latest
    modernize -fix ./...

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cmd/compatibility/convert.go

@@ -19,6 +19,7 @@ package compatibility
 import (
 	"fmt"
 	"os"
+	"slices"
 	"strings"
 
 	"github.com/docker/compose/v5/cmd/compose"
@@ -59,7 +60,7 @@ func Convert(args []string) []string {
 ARGS:
 	for i := 0; i < l; i++ {
 		arg := args[i]
-		if contains(getCompletionCommands(), arg) {
+		if slices.Contains(getCompletionCommands(), arg) {
 			command = append([]string{arg}, command...)
 			continue
 		}
@@ -79,7 +80,7 @@ ARGS:
 			arg = "version"
 		}
 
-		if contains(getBoolFlags(), arg) {
+		if slices.Contains(getBoolFlags(), arg) {
 			rootFlags = append(rootFlags, arg)
 			continue
 		}
@@ -105,12 +106,3 @@ ARGS:
 	}
 	return append(rootFlags, command...)
 }
-
-func contains(array []string, needle string) bool {
-	for _, val := range array {
-		if val == needle {
-			return true
-		}
-	}
-	return false
-}

cmd/compose/config.go

@@ -23,6 +23,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"slices"
 	"sort"
 	"strings"
 
@@ -454,9 +455,7 @@ func runHash(ctx context.Context, dockerCli command.Cli, opts configOptions) err
 	}
 
 	sorted := services
-	sort.Slice(sorted, func(i, j int) bool {
-		return sorted[i] < sorted[j]
-	})
+	slices.Sort(sorted)
 
 	for _, name := range sorted {
 		s, err := project.GetService(name)

cmd/compose/ps.go

@@ -167,18 +167,9 @@ func runPs(ctx context.Context, dockerCli command.Cli, backendOptions *BackendOp
 func filterByStatus(containers []api.ContainerSummary, statuses []string) []api.ContainerSummary {
 	var filtered []api.ContainerSummary
 	for _, c := range containers {
-		if hasStatus(c, statuses) {
+		if slices.Contains(statuses, string(c.State)) {
 			filtered = append(filtered, c)
 		}
 	}
 	return filtered
 }
-
-func hasStatus(c api.ContainerSummary, statuses []string) bool {
-	for _, status := range statuses {
-		if string(c.State) == status {
-			return true
-		}
-	}
-	return false
-}

cmd/display/tty.go

@@ -317,10 +317,7 @@ func (w *ttyWriter) printWithDimensions(terminalWidth, terminalHeight int) {
 	allTasks := slices.Collect(w.parentTasks())
 
 	// Available lines: terminal height - 2 (header line + potential "more" line)
-	maxLines := terminalHeight - 2
-	if maxLines < 1 {
-		maxLines = 1
-	}
+	maxLines := max(terminalHeight-2, 1)
 
 	showMore := len(allTasks) > maxLines
 	tasksToShow := allTasks
@@ -354,10 +351,7 @@ func (w *ttyWriter) printWithDimensions(terminalWidth, terminalHeight int) {
 	if showMore {
 		moreCount := len(allTasks) - len(tasksToShow)
 		moreText := fmt.Sprintf(" ... %d more", moreCount)
-		pad := terminalWidth - len(moreText)
-		if pad < 0 {
-			pad = 0
-		}
+		pad := max(terminalWidth-len(moreText), 0)
 		_, _ = fmt.Fprintf(w.out, "%s%s\n", moreText, strings.Repeat(" ", pad))
 		numLines++
 	}
@@ -392,10 +386,7 @@ func (w *ttyWriter) applyPadding(lines []lineData, terminalWidth int, timerLen i
 		if l.details != "" {
 			lineLen += 1 + utf8.RuneCountInString(l.details)
 		}
-		l.timerPad = terminalWidth - lineLen - timerLen
-		if l.timerPad < 1 {
-			l.timerPad = 1
-		}
+		l.timerPad = max(terminalWidth-lineLen-timerLen, 1)
 		lines[i] = l
 
 	}
@@ -472,10 +463,7 @@ func truncateDetails(lines []lineData, overflow int) bool {
 	for i := range lines {
 		l := &lines[i]
 		if len(l.details) > 3 {
-			reduction := overflow
-			if reduction > len(l.details)-3 {
-				reduction = len(l.details) - 3
-			}
+			reduction := min(overflow, len(l.details)-3)
 			l.details = l.details[:len(l.details)-reduction-3] + "..."
 			return true
 		} else if l.details != "" {
@@ -504,10 +492,7 @@ func truncateLongestTaskID(lines []lineData, overflow, minIDLen int) bool {
 
 	l := &lines[longestIdx]
 	reduction := overflow + 3 // account for "..."
-	newLen := len(l.taskID) - reduction
-	if newLen < minIDLen-3 {
-		newLen = minIDLen - 3
-	}
+	newLen := max(len(l.taskID)-reduction, minIDLen-3)
 	if newLen > 0 {
 		l.taskID = l.taskID[:newLen] + "..."
 	}
@@ -546,10 +531,7 @@ func (w *ttyWriter) prepareLineData(t *task) lineData {
 			total += child.total
 			current += child.current
 			r := len(percentChars) - 1
-			p := child.percent
-			if p > 100 {
-				p = 100
-			}
+			p := min(child.percent, 100)
 			completion = append(completion, percentChars[r*p/100])
 		}
 	}

cmd/display/tty_test.go

@@ -186,7 +186,7 @@ func TestPrintWithDimensions_TaskWithProgress(t *testing.T) {
 	w.ids = append(w.ids, "Image nginx")
 
 	// Create child tasks to trigger progress display
-	for i := 0; i < 3; i++ {
+	for i := range 3 {
 		child := &task{
 			ID:        "layer" + string(rune('a'+i)),
 			parents:   map[string]struct{}{"Image nginx": {}},

cmd/formatter/shortcut.go

@@ -189,7 +189,7 @@ func (lk *LogKeyboard) clearNavigationMenu() {
 	saveCursor()
 
 	// clearLine()
-	for i := 0; i < height; i++ {
+	for range height {
 		moveCursorDown(1)
 		clearLine()
 	}
@@ -341,7 +341,7 @@ func (lk *LogKeyboard) EnableDetach(detach func()) {
 }
 
 func allocateSpace(lines int) {
-	for i := 0; i < lines; i++ {
+	for range lines {
 		clearLine()
 		newLine()
 		carriageReturn()

internal/tracing/mux.go

@@ -36,15 +36,13 @@ func (m MuxExporter) ExportSpans(ctx context.Context, spans []sdktrace.ReadOnlyS
 	)
 
 	for _, exporter := range m.exporters {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			if err := exporter.ExportSpans(ctx, spans); err != nil {
 				errMu.Lock()
 				errs = append(errs, err)
 				errMu.Unlock()
 			}
-		}()
+		})
 	}
 	wg.Wait()
 	return errors.Join(errs...)
@@ -58,15 +56,13 @@ func (m MuxExporter) Shutdown(ctx context.Context) error {
 	)
 
 	for _, exporter := range m.exporters {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			if err := exporter.Shutdown(ctx); err != nil {
 				errMu.Lock()
 				errs = append(errs, err)
 				errMu.Unlock()
 			}
-		}()
+		})
 	}
 	wg.Wait()
 	return errors.Join(errs...)

pkg/compose/pull.go

@@ -430,10 +430,7 @@ func toPullProgressEvent(parent string, jm jsonstream.Message, events api.EventP
 			current = jm.Progress.Current
 			total = jm.Progress.Total
 			if jm.Progress.Total > 0 {
-				percent = int(jm.Progress.Current * 100 / jm.Progress.Total)
-				if percent > 100 {
-					percent = 100
-				}
+				percent = min(int(jm.Progress.Current*100/jm.Progress.Total), 100)
 			}
 		}
 	case DownloadCompletePhase, AlreadyExistsPhase, PullCompletePhase:

pkg/compose/push.go

@@ -155,10 +155,7 @@ func toPushProgressEvent(prefix string, jm jsonstream.Message, events api.EventP
 			current = jm.Progress.Current
 			total = jm.Progress.Total
 			if jm.Progress.Total > 0 {
-				percent = int(jm.Progress.Current * 100 / jm.Progress.Total)
-				if percent > 100 {
-					percent = 100
-				}
+				percent = min(int(jm.Progress.Current*100/jm.Progress.Total), 100)
 			}
 		}
 	}

pkg/e2e/logs_test.go

@@ -109,7 +109,7 @@ func TestLocalComposeLargeLogs(t *testing.T) {
 
 	f, err := os.Create(file)
 	assert.NilError(t, err)
-	for i := 0; i < 300_000; i++ {
+	for i := range 300_000 {
 		_, err := io.WriteString(f, fmt.Sprintf("This is line %d in a laaaarge text file\n", i))
 		assert.NilError(t, err)
 	}