Implementing a custom stdndup for windows

CMakeLists.txt

@@ -12,6 +12,7 @@ add_library(transcoder SHARED
 	src/transmuxer.c
 	src/path_helper.c
 	src/destroyer.c
+    src/compatibility.c
 )
 set_property(TARGET transcoder PROPERTY C_STANDARD 11)
 set_property(TARGET transcoder PROPERTY POSITION_INDEPENDENT_CODE ON)

include/compatibility.h

@@ -7,9 +7,11 @@
 #define _GNU_SOURCE // For asprintf
 #include <stdio.h>
 
-#ifdef __WIN32__
+#if defined(_WIN32) || defined(WIN32)
 	#define kmkdir(dir, mode) mkdir(dir)
 	#include <io.h>
+	#include <stddef.h>
+	char *strndup(const char *str, size_t count);
 #else
 	#define kmkdir(dir, mode) mkdir(dir, mode)
 	#include <unistd.h>

src/compatibility.c

@@ -0,0 +1,21 @@
+//
+// Created by Zoe Roux on 2021-04-15.
+//
+
+#include "compatibility.h"
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_WIN32) || defined(WIN32)
+char *strndup(const char *str, size_t count)
+{
+	size_t len = strnlen(str, count);
+	char *ret = malloc(sizeof(char) * (len + 1));
+
+	if (!ret)
+		return NULL;
+	ret[len] = '\0';
+	memcpy(ret, str, len);
+	return ret;
+}
+#endif