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/* 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;
}
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