init template

gohtml/engine/engine.go

@@ -0,0 +1,25 @@
+package engine
+
+import (
+	"fmt"
+	html "html/template"
+
+	"gitoa.ru/go-4devs/mime"
+	"gitoa.ru/go-4devs/templating/engine"
+	"gitoa.ru/go-4devs/templating/loader"
+)
+
+const Name = "gohtml"
+
+func Parser(source loader.Source) (engine.Template, error) {
+	tpl, err := html.New(source.Name()).Parse(source.Data())
+	if err != nil {
+		return nil, fmt.Errorf("parse html:%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.ExtHTML))...)
+}

gohtml/engine/engine_test.go

@@ -0,0 +1,23 @@
+package engine_test
+
+import (
+	"bytes"
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/templating/gohtml/engine"
+	"gitoa.ru/go-4devs/templating/loader"
+)
+
+func TestParser(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	buff := bytes.Buffer{}
+
+	tpl, err := engine.Parser(loader.NewSource(t.Name(), `engine:{{.name}}`))
+	require.NoError(t, err)
+	require.NoError(t, tpl.Execute(ctx, &buff, map[string]string{"name": "gohtml"}, nil))
+	require.Equal(t, "engine:gohtml", buff.String())
+}

gohtml/html.go

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