init import

pkg/auxtool/cleandir.go

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
+ */
+package auxtool
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// Clean only overbase elements of dir path if possible
+func CleanDirs(basedir, datadir string) {
+	separator := string(os.PathSeparator)
+
+	basedir = filepath.Clean(separator + basedir)
+	datadir = filepath.Clean(separator + datadir)
+
+	items := strings.Split(datadir, separator)
+	for i := len(items); i > 0; i-- {
+		p := filepath.Join(items[0:i]...)
+		p = filepath.Clean(separator + p)
+		if p == basedir {
+			break
+		}
+		fileInfo, err := os.Stat(p)
+		if err != nil {
+			return
+		}
+		if fileInfo.IsDir() {
+			err = os.Remove(p)
+			if err != nil {
+				return
+			}
+		}
+	}
+}

pkg/auxtool/fileex.go

@@ -0,0 +1,31 @@
+package auxtool
+
+import (
+	"os"
+)
+
+func FileExists(name string) bool {
+	fileStat, err := os.Stat(name)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false
+		}
+	}
+	if fileStat.IsDir() {
+		return false
+	}
+	return true
+}
+
+func DirExists(name string) bool {
+	fileStat, err := os.Stat(name)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false
+		}
+	}
+	if fileStat == nil {
+		return false
+	}
+	return fileStat.IsDir()
+}

pkg/auxtool/randstr.go

@@ -0,0 +1,22 @@
+/*
+  * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
+ *
+ *
+*/
+/*
+ */
+
+package auxtool
+
+import (
+	"math/rand"
+)
+
+func RandomString(n int) string {
+	const letters = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	arr := make([]byte, n)
+	for i := range arr {
+		arr[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(arr)
+}

pkg/auxtool/tmpfile.go

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
+ */
+package auxtool
+
+import (
+	"encoding/hex"
+	"fmt"
+	"math/rand"
+	"time"
+)
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
+
+func MakeTmpFilename(prefix string) string {
+	randBytes := make([]byte, 6)
+	rand.Read(randBytes)
+	suffix := hex.EncodeToString(randBytes)
+	return fmt.Sprintf("%s.tmp.%s", prefix, suffix)
+}

pkg/auxtool/unixnow.go

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
+ */
+package auxtool
+
+import (
+	"time"
+)
+
+func TimeNow() string {
+	return time.Now().Format(time.RFC3339)
+
+}