--- CV/CV.xs	2005/07/20 06:20:36	1.17
+++ CV/CV.xs	2005/07/20 22:33:01	1.19
@@ -2,6 +2,7 @@
 #include "perl.h"
 #include "XSUB.h"
 
+#include <string.h>
 #include <setjmp.h>
 
 #include <jpeglib.h>
@@ -270,6 +271,48 @@
 
 MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
 
+SV *
+foldcase (SV *pathsv)
+	PROTOTYPE: $
+	CODE:
+{
+	STRLEN plen;
+        U8 *path = SvPVutf8 (pathsv, plen);
+        U8 *pend = path + plen;
+        U8 dst [plen * 6 * 3], *dstp = dst;
+
+        while (path < pend)
+          {
+            U8 ch = *path;
+
+            if (ch >= 'a' && ch <= 'z')
+              *dstp++ = *path++;
+            else if (ch >= '0' && ch <= '9')
+              {
+                STRLEN el, nl = 0;
+                while (*path >= '0' && *path <= '9' && path < pend)
+                  path++, nl++;
+
+                for (el = nl; el < 6; el++)
+                  *dstp++ = '0';
+
+                memcpy (dstp, path - nl, nl);
+                dstp += nl;
+              }
+            else
+              {
+                STRLEN cl;
+                to_utf8_fold (path, dstp, &cl);
+                dstp += cl;
+                path += is_utf8_char (path);
+              }
+          }
+
+        RETVAL = newSVpvn (dst, dstp - dst);
+}
+	OUTPUT:
+        RETVAL
+
 GdkPixbuf_noinc *
 p7_to_pb (int w, int h, guchar *src)
 	CODE: