1 files changed, 29 insertions, 0 deletions
diff --git a/utils/dup_mb_to_wc.c b/utils/dup_mb_to_wc.c
new file mode 100644
index 00000000..c3f17aba
--- /dev/null
+++ b/utils/dup_mb_to_wc.c
@@ -0,0 +1,29 @@
+/*
+ * dup_mb_to_wc: memory-allocating wrapper on mb_to_wc.
+ *
+ * Also dup_mb_to_wc_c: same but you already know the length of the
+ * string.
+ */
+
+#include "putty.h"
+#include "misc.h"
+
+wchar_t *dup_mb_to_wc_c(int codepage, int flags, const char *string, int len)
+{
+    int mult;
+    for (mult = 1 ;; mult++) {
+        wchar_t *ret = snewn(mult*len + 2, wchar_t);
+        int outlen;
+        outlen = mb_to_wc(codepage, flags, string, len, ret, mult*len + 1);
+        if (outlen < mult*len+1) {
+            ret[outlen] = L'\0';
+            return ret;
+        }
+        sfree(ret);
+    }
+}
+
+wchar_t *dup_mb_to_wc(int codepage, int flags, const char *string)
+{
+    return dup_mb_to_wc_c(codepage, flags, string, strlen(string));
+}