vendor: update all dependencies to latest versions

vendor/github.com/pengsrc/go-shared/check/dir.go

@@ -0,0 +1,17 @@
+package check
+
+import (
+	"fmt"
+	"os"
+)
+
+// Dir checks the given path, will return error if path not exists or path
+// is not directory.
+func Dir(path string) error {
+	if info, err := os.Stat(path); err != nil {
+		return fmt.Errorf(`directory not exists: %s`, path)
+	} else if !info.IsDir() {
+		return fmt.Errorf(`path is not directory: %s`, path)
+	}
+	return nil
+}

vendor/github.com/pengsrc/go-shared/check/dir_test.go

@@ -0,0 +1,23 @@
+package check
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCheckDir(t *testing.T) {
+	// Path not exist.
+	assert.Error(t, Dir("/not-exist-dir"))
+
+	// Path is not directory.
+	f, err := ioutil.TempFile(os.TempDir(), "test-check-dir-")
+	assert.NoError(t, err)
+	f.Close()
+	os.Remove(f.Name())
+
+	// OK.
+	assert.NoError(t, Dir(os.TempDir()))
+}

vendor/github.com/pengsrc/go-shared/check/error.go

@@ -5,6 +5,22 @@ import (
 	"os"
 )
 
+// ReadableError is just a structure contains readable message that can be
+// returned directly to end user.
+type ReadableError struct {
+	Message string
+}
+
+// Error returns the description of ReadableError.
+func (e ReadableError) Error() string {
+	return e.Message
+}
+
+// NewReadableError creates a ReadableError{} from given message.
+func NewReadableError(message string) ReadableError {
+	return ReadableError{Message: message}
+}
+
 // ErrorForExit check the error.
 // If error is not nil, print the error message and exit the application.
 // If error is nil, do nothing.