Update XZ Utils to 5.0.3 (in deps)

src/common/tuklib_mbstr_width.c

+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       tuklib_mstr_width.c
+/// \brief      Calculate width of a multibyte string
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tuklib_mbstr.h"
+
+#if defined(HAVE_MBRTOWC) && defined(HAVE_WCWIDTH)
+#       include <wchar.h>
+#endif
+
+
+extern size_t
+tuklib_mbstr_width(const char *str, size_t *bytes)
+{
+        const size_t len = strlen(str);
+        if (bytes != NULL)
+                *bytes = len;
+
+#if !(defined(HAVE_MBRTOWC) && defined(HAVE_WCWIDTH))
+        // In single-byte mode, the width of the string is the same
+        // as its length.
+        return len;
+
+#else
+        mbstate_t state;
+        memset(&state, 0, sizeof(state));
+
+        size_t width = 0;
+        size_t i = 0;
+
+        // Convert one multibyte character at a time to wchar_t
+        // and get its width using wcwidth().
+        while (i < len) {
+                wchar_t wc;
+                const size_t ret = mbrtowc(&wc, str + i, len - i, &state);
+                if (ret < 1 || ret > len)
+                        return (size_t)-1;
+
+                i += ret;
+
+                const int wc_width = wcwidth(wc);
+                if (wc_width < 0)
+                        return (size_t)-1;
+
+                width += wc_width;
+        }
+
+        // Require that the string ends in the initial shift state.
+        // This way the caller can be combine the string with other
+        // strings without needing to worry about the shift states.
+        if (!mbsinit(&state))
+                return (size_t)-1;
+
+        return width;
+#endif
+}