增加单机管理包布局结构化输出

cmd/mxsml-package-layout/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"os"
+	"path/filepath"
+	"sort"
+)
+
+type layout struct {
+	CommandCount int      `json:"command_count"`
+	DemoCount    int      `json:"demo_count"`
+	PackageCount int      `json:"package_count"`
+	GenCount     int      `json:"gen_count"`
+	Commands     []string `json:"commands"`
+	Demos        []string `json:"demos"`
+	Packages     []string `json:"packages"`
+	Generated    []string `json:"generated"`
+}
+
+func listDirectories(root string) ([]string, error) {
+	entries, err := os.ReadDir(root)
+	if err != nil {
+		return nil, err
+	}
+	var results []string
+	for _, entry := range entries {
+		if entry.IsDir() {
+			results = append(results, entry.Name())
+		}
+	}
+	sort.Strings(results)
+	return results, nil
+}
+
+func run(repoRoot string) (layout, error) {
+	commands, err := listDirectories(filepath.Join(repoRoot, "cmd"))
+	if err != nil {
+		return layout{}, err
+	}
+	demos, err := listDirectories(filepath.Join(repoRoot, "demo"))
+	if err != nil {
+		return layout{}, err
+	}
+	packages, err := listDirectories(filepath.Join(repoRoot, "pkg"))
+	if err != nil {
+		return layout{}, err
+	}
+	generated, err := listDirectories(filepath.Join(repoRoot, "gen"))
+	if err != nil {
+		return layout{}, err
+	}
+	return layout{
+		CommandCount: len(commands),
+		DemoCount:    len(demos),
+		PackageCount: len(packages),
+		GenCount:     len(generated),
+		Commands:     commands,
+		Demos:        demos,
+		Packages:     packages,
+		Generated:    generated,
+	}, nil
+}
+
+func main() {
+	repoRoot := flag.String("repo-root", ".", "Repository root")
+	flag.Parse()
+
+	report, err := run(*repoRoot)
+	if err != nil {
+		panic(err)
+	}
+	encoder := json.NewEncoder(os.Stdout)
+	encoder.SetIndent("", "  ")
+	_ = encoder.Encode(report)
+}

cmd/mxsml-package-layout/main_test.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func mkdir(t *testing.T, path string) {
+	t.Helper()
+	if err := os.MkdirAll(path, 0o755); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestRunListsTopLevelGroups(t *testing.T) {
+	root := t.TempDir()
+	mkdir(t, filepath.Join(root, "cmd", "mxsml-diag"))
+	mkdir(t, filepath.Join(root, "demo", "mxsml"))
+	mkdir(t, filepath.Join(root, "pkg", "mxsml"))
+	mkdir(t, filepath.Join(root, "gen", "mxsml"))
+
+	report, err := run(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if report.CommandCount != 1 || report.DemoCount != 1 || report.PackageCount != 1 || report.GenCount != 1 {
+		t.Fatalf("unexpected layout counts: %+v", report)
+	}
+}