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/* Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
Without limiting anything contained in the foregoing, this file,
which is part of C Driver for MySQL (Connector/C), is also subject to the
Universal FOSS Exception, version 1.0, a copy of which can be found at
http://oss.oracle.com/licenses/universal-foss-exception.
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 General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file mysys/mf_arr_appstr.cc
*/
/**
Append str to array, or move to the end if it already exists
@param str String to be appended
@param array The array, terminated by a NULL element, all unused elements
pre-initialized to NULL
@param size Size of the array; array must be terminated by a NULL
pointer, so can hold size - 1 elements
@retval false Success
@retval true Failure, array is full
*/
#include <string.h>
#include "my_dbug.h"
#include "my_inttypes.h"
bool array_append_string_unique(const char *str, const char **array,
size_t size) {
const char **p;
/* end points at the terminating NULL element */
const char **end = array + size - 1;
DBUG_ASSERT(*end == NULL);
for (p = array; *p; ++p) {
if (strcmp(*p, str) == 0) break;
}
if (p >= end) return true; /* Array is full */
DBUG_ASSERT(*p == NULL || strcmp(*p, str) == 0);
while (*(p + 1)) {
*p = *(p + 1);
++p;
}
DBUG_ASSERT(p < end);
*p = str;
return false; /* Success */
}
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