Added multilanguage support

vendor/github.com/nicksnyder/go-i18n/v2/internal/template.go

@@ -0,0 +1,51 @@
+package internal
+
+import (
+	"bytes"
+	"strings"
+	"sync"
+	gotemplate "text/template"
+)
+
+// Template stores the template for a string.
+type Template struct {
+	Src        string
+	LeftDelim  string
+	RightDelim string
+
+	parseOnce      sync.Once
+	parsedTemplate *gotemplate.Template
+	parseError     error
+}
+
+func (t *Template) Execute(funcs gotemplate.FuncMap, data interface{}) (string, error) {
+	leftDelim := t.LeftDelim
+	if leftDelim == "" {
+		leftDelim = "{{"
+	}
+	if !strings.Contains(t.Src, leftDelim) {
+		// Fast path to avoid parsing a template that has no actions.
+		return t.Src, nil
+	}
+
+	var gt *gotemplate.Template
+	var err error
+	if funcs == nil {
+		t.parseOnce.Do(func() {
+			// If funcs is nil, then we only need to parse this template once.
+			t.parsedTemplate, t.parseError = gotemplate.New("").Delims(t.LeftDelim, t.RightDelim).Parse(t.Src)
+		})
+		gt, err = t.parsedTemplate, t.parseError
+	} else {
+		gt, err = gotemplate.New("").Delims(t.LeftDelim, t.RightDelim).Funcs(funcs).Parse(t.Src)
+	}
+
+	if err != nil {
+		return "", err
+	}
+	var buf bytes.Buffer
+	if err := gt.Execute(&buf, data); err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}