From ad70fbf73aee6c21cfd6b4cfa3bc3ce86ff23054 Mon Sep 17 00:00:00 2001
From: Danny Hermes <daniel.j.hermes@gmail.com>
Date: Tue, 8 Feb 2022 18:51:30 -0600
Subject: [PATCH] Add `Engine.LoadHTMLFromFS()` method to support `go:embed`

---
 gin.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gin.go b/gin.go
index b54dbd8a..618af206 100644
--- a/gin.go
+++ b/gin.go
@@ -7,6 +7,7 @@ package gin
 import (
 	"fmt"
 	"html/template"
+	"io/fs"
 	"net"
 	"net/http"
 	"os"
@@ -267,6 +268,23 @@ func (engine *Engine) LoadHTMLFiles(files ...string) {
 	engine.SetHTMLTemplate(templ)
 }
 
+
+// LoadHTMLFromFS loads HTML files identified by glob pattern
+// from a filesytem interface and associates the result with HTML renderer.
+func (engine *Engine) LoadHTMLFromFS(filesystem fs.FS, patterns ...string) {
+	left := engine.delims.Left
+	right := engine.delims.Right
+	templ := template.Must(template.New("").Delims(left, right).Funcs(engine.FuncMap).ParseFS(filesystem, patterns...))
+
+	if IsDebugging() {
+		debugPrintLoadTemplate(templ)
+		engine.HTMLRender = render.HTMLDebug{Glob: pattern, FuncMap: engine.FuncMap, Delims: engine.delims}
+		return
+	}
+
+	engine.SetHTMLTemplate(templ)
+}
+
 // SetHTMLTemplate associate a template with HTML renderer.
 func (engine *Engine) SetHTMLTemplate(templ *template.Template) {
 	if len(engine.trees) > 0 {