1 files changed, 49 insertions, 0 deletions
diff --git a/libsimple/wcsdup.h b/libsimple/wcsdup.h
new file mode 100644
index 0000000..685b8ac
--- /dev/null
+++ b/libsimple/wcsdup.h
@@ -0,0 +1,49 @@
+/* See LICENSE file for copyright and license details. */
+
+
+/**
+ * Stack allocation version of wcsdup(3)
+ * 
+ * @param   s:const wchar_t *  The string to copy
+ * @return  :wchar_t *         Duplicate of `s` with automatic storage
+ */
+#if defined(__GNUC__) || defined(__clang__)
+# define libsimple_wcsdupa(s) /* TODO test, man */\
+	({\
+		const wchar_t *__s = (s);\
+		size_t __n = wcslen(__s) + 1;\
+		wchar_t *__r = alloca(__n * sizeof(wchar_t));\
+		wmemcpy(__r, __s, __n);\
+	})
+# ifndef wcsdupa
+#  define wcsdupa(s) libsimple_wcsdupa(s)
+# endif
+#endif
+
+
+/**
+ * Version of wcsdup(3) that calls `libsimple_enprintf` on error
+ * 
+ * @param   status  Exit value in case of failure
+ * @param   s       The string to copy
+ * @return          Duplicate of `s`
+ */
+_LIBSIMPLE_GCC_ONLY(__attribute__((__malloc__, __nonnull__, __warn_unused_result__, __returns_nonnull__)))
+wchar_t *libsimple_enwcsdup(int, const wchar_t *); /* TODO man */
+#ifndef enwcsdup
+# define enwcsdup libsimple_enwcsdup
+#endif
+
+
+/**
+ * Version of wcsdup(3) that calls `libsimple_eprintf` on error
+ * 
+ * @param   s  The string to copy
+ * @return     Duplicate of `s`
+ */
+_LIBSIMPLE_GCC_ONLY(__attribute__((__malloc__, __nonnull__, __warn_unused_result__, __returns_nonnull__)))
+static inline wchar_t *libsimple_ewcsdup(const wchar_t *__s) /* TODO man */
+{ return enwcsdup(libsimple_default_failure_exit, __s); }
+#ifndef ewcsdup
+# define ewcsdup libsimple_ewcsdup
+#endif