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/* Copyright (c) 2000, 2015, 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 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 "mysys_priv.h"
#include "my_sys.h"
#include <m_string.h>
/**
Returns full load-path for a file. to may be = path.
@param to Pointer to destination which will hold the expanded path.
@param path Pointer to buffer containing the supplied path.
@param own_path_prefix Prefix to be appended to path.
@retval to Pointer to the supplied destination buffer
that will hold the full load-path.
*/
char * my_load_path(char * to, const char *path,
const char *own_path_prefix)
{
char buff[FN_REFLEN];
int cur_prefix_len;
const char *buff_ptr= path;
DBUG_ENTER("my_load_path");
DBUG_PRINT("enter",("path: %s prefix: %s",path,
own_path_prefix ? own_path_prefix : ""));
cur_prefix_len= (path[0] == FN_CURLIB && path[1] == FN_LIBCHAR)?2:0;
// If path starts with current dir or parent-dir unpack path.
if ( cur_prefix_len || is_prefix(path, FN_PARENTDIR))
{
if ((strlen(path) + cur_prefix_len) < FN_REFLEN &&
!my_getwd(buff, (uint) (FN_REFLEN - strlen(path) + cur_prefix_len), MYF(0)))
{
(void) strncat(buff, path + cur_prefix_len, FN_REFLEN - strlen(buff) - 1);
buff_ptr= buff;
}
}
/*
Prepend the path with own_path_prefix if own_path_prefix is
specified and path doesn't start with home directory character
and path is not a hard-path.
If path is hard path or home dir, return the path.
*/
else if (own_path_prefix != NULL &&
!(path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) &&
!test_if_hard_path(path))
{
(void) strxnmov(buff, sizeof(buff)-1, own_path_prefix, path, NullS);
buff_ptr= buff;
}
my_stpnmov(to, buff_ptr, FN_REFLEN);
to[FN_REFLEN-1]= '\0';
DBUG_PRINT("exit",("to: %s",to));
DBUG_RETURN(to);
} /* my_load_path */
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