From fc87156268ff3380321b83d9b6e2408441f58047 Mon Sep 17 00:00:00 2001
From: Jonathan Cobb <jonathan@kyuss.org>
Date: Fri, 24 Jul 2020 01:39:06 -0400
Subject: [PATCH] add sha256expr handlebars helper

---
 .../java/org/cobbzilla/util/handlebars/HandlebarsUtil.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/org/cobbzilla/util/handlebars/HandlebarsUtil.java b/src/main/java/org/cobbzilla/util/handlebars/HandlebarsUtil.java
index a619248..e2f56bb 100644
--- a/src/main/java/org/cobbzilla/util/handlebars/HandlebarsUtil.java
+++ b/src/main/java/org/cobbzilla/util/handlebars/HandlebarsUtil.java
@@ -275,6 +275,13 @@ public class HandlebarsUtil extends AbstractTemplateLoader {
             return new Handlebars.SafeString(src.toString());
         });
 
+        hb.registerHelper("sha256expr", (src, options) -> {
+            if (empty(src)) return "";
+            src = apply(hb, src.toString(), (Map<String, Object>) options.context.model(), '[', ']');
+            src = sha256_hex(src.toString());
+            return new Handlebars.SafeString(src.toString());
+        });
+
         hb.registerHelper("safeSql", (src, options) -> {
             if (empty(src)) return "";
             final String illegalChars = src.toString().replaceAll("[A-Za-z0-9=<>_\\()\\s\\.]+", "");