From 9948eee6c2fe0e07646f570793283c5af26b68db Mon Sep 17 00:00:00 2001
From: jp9000 <obs.jim@gmail.com>
Date: Wed, 15 Jun 2016 16:18:56 -0700
Subject: [PATCH] libobs/util: Add function to get path extension

---
 libobs/util/platform.c | 23 +++++++++++++++++++++++
 libobs/util/platform.h |  2 ++
 2 files changed, 25 insertions(+)

diff --git a/libobs/util/platform.c b/libobs/util/platform.c
index af031e60b..ffccf8ab2 100644
--- a/libobs/util/platform.c
+++ b/libobs/util/platform.c
@@ -633,3 +633,26 @@ int os_mkdirs(const char *dir)
 	dstr_free(&dir_str);
 	return ret;
 }
+
+const char *os_get_path_extension(const char *path)
+{
+	struct dstr temp;
+	size_t pos = 0;
+	char *period;
+	char *slash;
+
+	dstr_init_copy(&temp, path);
+	dstr_replace(&temp, "\\", "/");
+
+	slash = strrchr(temp.array, '/');
+	period = strrchr(temp.array, '.');
+	if (period)
+		pos = (size_t)(period - temp.array);
+
+	dstr_free(&temp);
+
+	if (!period || slash > period)
+		return NULL;
+
+	return path + pos;
+}
diff --git a/libobs/util/platform.h b/libobs/util/platform.h
index 808171723..78fc40df3 100644
--- a/libobs/util/platform.h
+++ b/libobs/util/platform.h
@@ -113,6 +113,8 @@ EXPORT bool os_file_exists(const char *path);
 EXPORT size_t os_get_abs_path(const char *path, char *abspath, size_t size);
 EXPORT char *os_get_abs_path_ptr(const char *path);
 
+EXPORT const char *os_get_path_extension(const char *path);
+
 struct os_dir;
 typedef struct os_dir os_dir_t;