add 'iris.Ace' template engine: _examples/view/template_ace_0

view/ace.go

@@ -0,0 +1,57 @@
+package view
+
+import (
+	"path"
+	"sync"
+
+	"github.com/yosssi/ace"
+)
+
+// Ace returns a new ace view engine.
+// It shares the same exactly logic with the
+// html view engine, it uses the same exactly configuration.
+//
+// Read more about the Ace Go Parser: https://github.com/yosssi/ace
+func Ace(directory, extension string) *HTMLEngine {
+	s := HTML(directory, extension)
+
+	funcs := make(map[string]interface{}, 0)
+
+	once := new(sync.Once)
+	s.middleware = func(name string, text []byte) (contents string, err error) {
+		once.Do(func() { // on first template parse, all funcs are given.
+			for k, v := range s.funcs {
+				funcs[k] = v
+			}
+			for k, v := range emptyFuncs {
+				funcs[k] = v
+			}
+		})
+
+		name = path.Join(path.Clean(directory), name)
+
+		src := ace.NewSource(
+			ace.NewFile(name, text),
+			ace.NewFile("", []byte{}),
+			[]*ace.File{},
+		)
+
+		rslt, err := ace.ParseSource(src, nil)
+		if err != nil {
+			return "", err
+		}
+
+		t, err := ace.CompileResult(name, rslt, &ace.Options{
+			Extension:  extension[1:],
+			FuncMap:    funcs,
+			DelimLeft:  s.left,
+			DelimRight: s.right,
+		})
+		if err != nil {
+			return "", err
+		}
+
+		return t.Lookup(name).Tree.Root.String(), nil
+	}
+	return s
+}