From 923b945be41739c109b5452567a521fa03c44498 Mon Sep 17 00:00:00 2001
From: David Vazgenovich Shakaryan <dvshakaryan@gmail.com>
Date: Fri, 6 May 2022 01:01:53 -0700
Subject: web: simplify buffering of display data

---
 web/web_misc.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 web/web_misc.c

(limited to 'web/web_misc.c')

diff --git a/web/web_misc.c b/web/web_misc.c
new file mode 100644
index 0000000..a754f9e
--- /dev/null
+++ b/web/web_misc.c
@@ -0,0 +1,29 @@
+#include "web_misc.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+void bufstr_buf(bufstr *b, char *str)
+{
+	if (str == b->buf || (str && b->buf && !strcmp(str, b->buf)))
+		return;
+
+	if (b->buf != b->fl)
+		free(b->buf);
+	b->buf = str ? strdup(str) : NULL;
+}
+
+bool bufstr_changed(bufstr *b)
+{
+	return (!b->buf != !b->fl) ||
+		(b->buf != b->fl && strcmp(b->buf, b->fl));
+}
+
+char *bufstr_flush(bufstr *b)
+{
+	if (b->fl != b->buf)
+		free(b->fl);
+	b->fl = b->buf;
+	return b->fl;
+}
-- 
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