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/* Copyright (C) 2007 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 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 */
#include <config.h>
#include <drizzled/internal/my_sys.h>
#include <drizzled/internal/m_string.h>
namespace drizzled
{
namespace internal
{
/**
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
*/
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;
assert(*end == NULL);
for (p= array; *p; ++p)
{
if (strcmp(*p, str) == 0)
break;
}
if (p >= end)
return true; /* Array is full */
assert(*p == NULL || strcmp(*p, str) == 0);
while (*(p + 1))
{
*p= *(p + 1);
++p;
}
assert(p < end);
*p= str;
return false; /* Success */
}
} /* namespace internal */
} /* namespace drizzled */
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