vendor tsgo

tools/tsgo/internal/fswatch/walkdir.go

@@ -0,0 +1,57 @@
+package fswatch
+
+import (
+	"errors"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
+// walkDirGeneric is the portable walkDir implementation. It is used as the
+// primary implementation on platforms without a native version, and is
+// tested on all platforms.
+func walkDirGeneric(dir string, recursive bool, fn func(path string, isDir bool) error) error {
+	info, err := os.Lstat(dir)
+	if err != nil {
+		return err
+	}
+	if !info.IsDir() {
+		return syscall.ENOTDIR
+	}
+	return walkDirGenericVisit(dir, recursive, fn)
+}
+
+func walkDirGenericVisit(dir string, recursive bool, fn func(path string, isDir bool) error) error {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		if errors.Is(err, fs.ErrPermission) || errors.Is(err, fs.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+	if fn != nil {
+		if err := fn(dir, true); err != nil {
+			return err
+		}
+	}
+	for _, e := range entries {
+		path := dir + string(filepath.Separator) + e.Name()
+		if e.IsDir() {
+			if recursive {
+				if err := walkDirGenericVisit(path, recursive, fn); err != nil {
+					return err
+				}
+			} else if fn != nil {
+				if err := fn(path, true); err != nil {
+					return err
+				}
+			}
+		} else if fn != nil {
+			if err := fn(path, false); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}