1 files changed, 93 insertions, 0 deletions

diff --git a/src/lib/libc/string/wcstok.c b/src/lib/libc/string/wcstok.c
new file mode 100644
index 0000000000..bc1ac3e8cb
--- /dev/null
+++ b/src/lib/libc/string/wcstok.c
@@ -0,0 +1,93 @@
+/*      $OpenBSD: wcstok.c,v 1.3 2005/08/08 08:05:37 espie Exp $        */
+/* $NetBSD: wcstok.c,v 1.3 2003/07/10 08:50:48 tshiozak Exp $ */
+
+/*-
+ * Copyright (c) 1998 Softweyr LLC.  All rights reserved.
+ *
+ * strtok_r, from Berkeley strtok
+ * Oct 13, 1998 by Wes Peters <wes@softweyr.com>
+ *
+ * Copyright (c) 1988, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notices, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notices, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Softweyr LLC, the
+ *      University of California, Berkeley, and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL SOFTWEYR LLC, THE
+ * REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Original version ID:
+ * FreeBSD: src/lib/libc/string/wcstok.c,v 1.1 2002/09/07 08:16:57 tjr Exp
+ */
+
+#include <wchar.h>
+
+wchar_t *
+wcstok(wchar_t * __restrict s, const wchar_t * __restrict delim, 
+    wchar_t ** __restrict last)
+{
+        const wchar_t *spanp;
+        wchar_t c, sc;
+        wchar_t *tok;
+
+        if (s == NULL && (s = *last) == NULL)
+                return (NULL);
+
+        /*
+         * Skip (span) leading delimiters (s += wcsspn(s, delim), sort of).
+         */
+cont:
+        c = *s++;
+        for (spanp = delim; (sc = *spanp++) != L'\0';) {
+                if (c == sc)
+                        goto cont;
+        }
+
+        if (c == L'\0') {       /* no non-delimiter characters */
+                *last = NULL;
+                return (NULL);
+        }
+        tok = s - 1;
+
+        /*
+         * Scan token (scan for delimiters: s += wcscspn(s, delim), sort of).
+         * Note that delim must have one NUL; we stop if we see that, too.
+         */
+        for (;;) {
+                c = *s++;
+                spanp = delim;
+                do {
+                        if ((sc = *spanp++) == c) {
+                                if (c == L'\0')
+                                        s = NULL;
+                                else
+                                        s[-1] = L'\0';
+                                *last = s;
+                                return (tok);
+                        }
+                } while (sc != L'\0');
+        }
+        /* NOTREACHED */
+}