From dae2e406d633ba32f2660100ef417ec13726765c Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Sat, 19 Aug 2023 09:59:58 +0200
Subject: history_add() now creates an etag.

---
 data.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'data.c')

diff --git a/data.c b/data.c
index 9c335be..bfe035e 100644
--- a/data.c
+++ b/data.c
@@ -1677,7 +1677,8 @@ double history_mtime(snac *snac, const char *id)
 }
 
 
-void history_add(snac *snac, const char *id, const char *content, int size)
+void history_add(snac *snac, const char *id, const char *content, int size,
+                    xs_str **etag)
 /* adds something to the history */
 {
     xs *fn = _history_fn(snac, id);
@@ -1686,6 +1687,11 @@ void history_add(snac *snac, const char *id, const char *content, int size)
     if (fn && (f = fopen(fn, "w")) != NULL) {
         fwrite(content, size, 1, f);
         fclose(f);
+
+        if (etag) {
+            double tm = mtime(fn);
+            *etag = xs_fmt("W/\"snac-%.0lf\"", tm);
+        }
     }
 }
 
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