From 7c2d98c32b3712a4619aa2914177efd81f6c3e32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A5vard=20Pettersson?= <haavard.pettersson@gmail.com>
Date: Tue, 2 Sep 2014 13:58:34 +0200
Subject: [PATCH] Added tox-weechat-utils.*

---
 src/tox-weechat-utils.c | 39 +++++++++++++++++++++++++++++++++++++++
 src/tox-weechat-utils.h | 16 ++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 src/tox-weechat-utils.c
 create mode 100644 src/tox-weechat-utils.h

diff --git a/src/tox-weechat-utils.c b/src/tox-weechat-utils.c
new file mode 100644
index 0000000..90a2ec0
--- /dev/null
+++ b/src/tox-weechat-utils.c
@@ -0,0 +1,39 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "tox-weechat-utils.h"
+
+uint8_t *
+tox_weechat_hex2bin(const char *hex)
+{
+    size_t length = strlen(hex) / 2;
+    uint8_t *bin = malloc(length);
+    const char *position = hex;
+
+    for (size_t i = 0; i < length; ++i)
+    {
+        sscanf(position, "%2hhx", &bin[i]);
+        position += 2;
+    }
+
+    return bin;
+}
+
+char *
+weechat_tox_bin2hex(const uint8_t *bin, size_t size)
+{
+    char *hex = malloc(size * 2 + 1);
+    char *position = hex;
+
+    for (size_t i = 0; i < size; ++i)
+    {
+        sprintf(position, "%02X", bin[i]);
+        position += 2;
+    }
+    *position = 0;
+
+    return hex;
+}
+
diff --git a/src/tox-weechat-utils.h b/src/tox-weechat-utils.h
new file mode 100644
index 0000000..94c4d59
--- /dev/null
+++ b/src/tox-weechat-utils.h
@@ -0,0 +1,16 @@
+#ifndef TOX_WEECHAT_UTILS_H
+#define TOX_WEECHAT_UTILS_H
+
+#include <stdint.h>
+
+/**
+ * Convert a hex string to a binary address. Return value must be freed.
+ */
+uint8_t *tox_weechat_hex2bin(const char *hex);
+
+/**
+ * Convert a binary address to a null-terminated hex string. Must be freed.
+ */
+char *tox_weechat_bin2hex(const char *hex);
+
+#endif // TOX_WEECHAT_UTILS_H