init: reinitialize from gin-template

common/embed-file-system.go

@@ -0,0 +1,32 @@
+package common
+
+import (
+	"embed"
+	"github.com/gin-gonic/contrib/static"
+	"io/fs"
+	"net/http"
+)
+
+// Credit: https://github.com/gin-contrib/static/issues/19
+
+type embedFileSystem struct {
+	http.FileSystem
+}
+
+func (e embedFileSystem) Exists(prefix string, path string) bool {
+	_, err := e.Open(path)
+	if err != nil {
+		return false
+	}
+	return true
+}
+
+func EmbedFolder(fsEmbed embed.FS, targetPath string) static.ServeFileSystem {
+	efs, err := fs.Sub(fsEmbed, targetPath)
+	if err != nil {
+		panic(err)
+	}
+	return embedFileSystem{
+		FileSystem: http.FS(efs),
+	}
+}