init template

gotxt/engine/engine.go

@@ -0,0 +1,25 @@
+package engine
+
+import (
+	"fmt"
+	text "text/template"
+
+	"gitoa.ru/go-4devs/mime"
+	"gitoa.ru/go-4devs/templating/engine"
+	"gitoa.ru/go-4devs/templating/loader"
+)
+
+const Name = "gotxt"
+
+func Parser(source loader.Source) (engine.Template, error) {
+	tpl, err := text.New(source.Name()).Parse(source.Data())
+	if err != nil {
+		return nil, fmt.Errorf("parse text:%w", engine.ErrNotSupport)
+	}
+
+	return engine.NewTemplate(tpl.Name(), tpl.Execute), nil
+}
+
+func New(opts ...engine.Option) *engine.Engine {
+	return engine.New(Name, Parser, append(opts, engine.WithFormats(mime.ExtTxt, mime.ExtText))...)
+}

gotxt/text.go

@@ -0,0 +1,43 @@
+package gotxt
+
+import (
+	"context"
+	"fmt"
+	text "text/template"
+
+	"gitoa.ru/go-4devs/templating"
+	"gitoa.ru/go-4devs/templating/engine"
+	gotxt "gitoa.ru/go-4devs/templating/gotxt/engine"
+	"gitoa.ru/go-4devs/templating/loader"
+)
+
+const Name = gotxt.Name
+
+var txt = gotxt.New()
+
+func init() {
+	templating.AddEngine(txt)
+}
+
+// Loader set new loader. This function is not thread-safe.
+func Loader(in loader.Loader) {
+	txt = txt.WithLoader(in)
+}
+
+func Must(template *text.Template, err error) {
+	MustRegister(text.Must(template, err))
+}
+
+func MustRegister(template *text.Template) {
+	if rerr := Register(template); rerr != nil {
+		panic(rerr)
+	}
+}
+
+func Register(template *text.Template) error {
+	if err := txt.Add(context.Background(), engine.NewTemplate(template.Name(), template.Execute)); err != nil {
+		return fmt.Errorf("gotext loader:%w", err)
+	}
+
+	return nil
+}