adds tmpl packagev0.0.1

1 files changed, 86 insertions, 0 deletions

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..0753321
--- /dev/null
+++ b/main.go
@@ -0,0 +1,86 @@
+package tmpl
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+	"os"
+	"path"
+)
+
+// Bundle map of templates
+type Bundle map[string]*template.Template
+
+// Tmpl template renderer
+type Tmpl interface {
+	GetTemplate(name string) *template.Template
+	Render(w http.ResponseWriter, templateName string, data interface{}) error
+}
+
+// HTML rendering bundle
+type HTML struct {
+	bundle Bundle
+}
+
+// NewHTMLTmpl load a bundle
+func NewHTMLTmpl(basePath string) (*HTML, error) {
+	print(basePath)
+	b, err := loadTemplates(basePath)
+	if err != nil {
+		return nil, err
+	}
+	return &HTML{
+		b,
+	}, err
+}
+
+func loadTemplates(basePath string) (Bundle, error) {
+	templates := make(Bundle)
+	baseTmplPath := path.Join(basePath, "parts", "_layout.tmpl")
+	baseTemplate := template.New("base")
+	baseTemplate, err := baseTemplate.ParseFiles(baseTmplPath)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+	partsPath := path.Join(basePath, "pages")
+	partsDir, err := os.Open(partsPath)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+	parts, err := partsDir.Readdir(-1)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+
+	for _, part := range parts {
+		t, err := baseTemplate.Clone()
+		if err != nil {
+			log.Fatal(err)
+			return nil, err
+		}
+		templates[part.Name()] = template.Must(
+			t.ParseFiles(path.Join(partsPath, part.Name())))
+	}
+	return templates, nil
+}
+
+// GetTemplate load template by name
+func (b *HTML) GetTemplate(name string) *template.Template {
+	return b.bundle[name]
+}
+
+// Render render templates
+func (b *HTML) Render(w http.ResponseWriter,
+	templateName string,
+	data interface{}) error {
+
+	tpl := b.GetTemplate(templateName)
+	err := tpl.ExecuteTemplate(w, "base", data)
+	if err != nil {
+		return err
+	}
+	return nil
+}