Add svg template function.

main.go

@@ -221,17 +221,19 @@ func (p *pipeline) run() error {
 	}
 	defer out.Close()
 
+	t := tmpl.New()
+
 	switch p.format {
 	case "html":
-		if err := tmpl.New().WriteHTML(out, in, p.minify); err != nil {
+		if err := t.WriteHTML(out, in, p.minify); err != nil {
 			return errors.Wrapf(err, "write html (in: %s)", p.inpath)
 		}
 	case "json":
-		if err := tmpl.New().WriteJSON(out, in, p.minify); err != nil {
+		if err := t.WriteJSON(out, in, p.minify); err != nil {
 			return errors.Wrapf(err, "write json (in: %s)", p.inpath)
 		}
 	default:
-		if err := tmpl.New().WriteText(out, in); err != nil {
+		if err := t.WriteText(out, in); err != nil {
 			return errors.Wrapf(err, "write text (in: %s)", p.inpath)
 		}
 	}

tmpl/tmpl.go

@@ -66,6 +66,7 @@ func (t *Tmpl) funcs() map[string]interface{} {
 		"safeJS":       tmplfunc.SafeJS,
 		"seq":          tmplfunc.Seq,
 		"sub":          tmplfunc.Sub,
+		"svg":          tmplfunc.SVG,
 		"timeIn":       tmplfunc.TimeIn,
 	}
 }

tmpl/tmplfunc/file.go

@@ -2,6 +2,7 @@ package tmplfunc
 
 import (
 	"bytes"
+	"html/template"
 	"io"
 	"os"
 
@@ -22,3 +23,13 @@ func File(path string) (string, error) {
 
 	return buf.String(), nil
 }
+
+// SVG reads the file at the provided path and returns its contents under the assumption that it's an HTML-safe string.
+func SVG(path string) (template.HTML, error) {
+	contents, err := File(path)
+	if err != nil {
+		return "", err
+	}
+
+	return template.HTML(contents), nil
+}