1 files changed, 52 insertions, 0 deletions
diff --git a/lib/unistr/u-strtok.h b/lib/unistr/u-strtok.h
new file mode 100644
index 00000000..7ed57d6f
--- /dev/null
+++ b/lib/unistr/u-strtok.h
@@ -0,0 +1,52 @@
+/* Tokenize UTF-8/UTF-16/UTF-32 string.
+   Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+UNIT *
+FUNC (UNIT *str, const UNIT *delim, UNIT **ptr)
+{
+  if (str == NULL)
+    {
+      str = *ptr;
+      if (str == NULL)
+	return NULL; /* reminder that end of token sequence has been reached */
+    }
+
+  /* Skip leading delimiters.  */
+  str += U_STRSPN (str, delim);
+
+  /* Found a token?  */
+  if (*str == 0)
+    {
+      *ptr = NULL;
+      return NULL;
+    }
+
+  /* Move past the token. */
+  {
+    UNIT *token_end = U_STRPBRK (str, delim);
+    if (token_end)
+      {
+	/* NUL-terminate the token.  */
+	*token_end = 0;
+	*ptr = token_end + 1;
+      }
+    else
+      *ptr = NULL;
+  }
+
+  return str;
+}