Migrate package imports from next.orly.dev to new orly domain structure; add new varint and binary encoders with comprehensive tests; enhance existing tag and envelope implementations with additional methods, validations, and test coverage; introduce shared test.sh script for streamlined testing across modules.

pkg/utils/apputil/apputil.go

@@ -0,0 +1,60 @@
+// Package apputil provides utility functions for file and directory operations.
+package apputil
+
+import (
+	"os"
+	"path/filepath"
+
+	"lol.mleku.dev/chk"
+)
+
+// EnsureDir checks if a file could be written to a path and creates the
+// necessary directories if they don't exist. It ensures that all parent
+// directories in the path are created with the appropriate permissions.
+//
+// # Parameters
+//
+//   - fileName: The full path to the file for which directories need to be
+//     created.
+//
+// Expected behavior:
+//
+//   - Extracts the directory path from the fileName.
+//
+//   - Checks if the directory exists.
+//
+//   - If the directory doesn't exist, creates it and all parent directories.
+func EnsureDir(fileName string) (merr error) {
+	dirName := filepath.Dir(fileName)
+	if _, err := os.Stat(dirName); chk.E(err) {
+		merr = os.MkdirAll(dirName, os.ModePerm)
+		if chk.E(merr) {
+			return
+		}
+		return
+	}
+	return
+}
+
+// FileExists reports whether the named file or directory exists.
+//
+// # Parameters
+//
+//   - filePath: The full path to the file or directory to check.
+//
+// Returns:
+//
+//   - bool: true if the file or directory exists, false otherwise.
+//
+// Behavior:
+//
+//   - Uses os.Stat to check if the file or directory exists.
+//
+//   - Returns true if the file exists and can be accessed.
+//
+//   - Returns false if the file doesn't exist or cannot be accessed due to
+//     permissions.
+func FileExists(filePath string) bool {
+	_, e := os.Stat(filePath)
+	return e == nil
+}