73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "mysys_priv.h"
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#include "my_sys.h"
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#include <m_string.h>
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/**
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Returns full load-path for a file. to may be = path.
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@param to Pointer to destination which will hold the expanded path.
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@param path Pointer to buffer containing the supplied path.
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@param own_path_prefix Prefix to be appended to path.
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@retval to Pointer to the supplied destination buffer
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that will hold the full load-path.
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*/
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char * my_load_path(char * to, const char *path,
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const char *own_path_prefix)
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{
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char buff[FN_REFLEN];
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int cur_prefix_len;
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const char *buff_ptr= path;
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DBUG_ENTER("my_load_path");
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DBUG_PRINT("enter",("path: %s prefix: %s",path,
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own_path_prefix ? own_path_prefix : ""));
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cur_prefix_len= (path[0] == FN_CURLIB && path[1] == FN_LIBCHAR)?2:0;
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// If path starts with current dir or parent-dir unpack path.
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if ( cur_prefix_len || is_prefix(path, FN_PARENTDIR))
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{
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if ((strlen(path) + cur_prefix_len) < FN_REFLEN &&
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!my_getwd(buff, (uint) (FN_REFLEN - strlen(path) + cur_prefix_len), MYF(0)))
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{
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(void) strncat(buff, path + cur_prefix_len, FN_REFLEN - strlen(buff) - 1);
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buff_ptr= buff;
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}
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}
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/*
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Prepend the path with own_path_prefix if own_path_prefix is
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specified and path doesn't start with home directory character
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and path is not a hard-path.
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If path is hard path or home dir, return the path.
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*/
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else if (own_path_prefix != NULL &&
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!(path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) &&
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!test_if_hard_path(path))
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{
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(void) strxnmov(buff, sizeof(buff)-1, own_path_prefix, path, NullS);
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buff_ptr= buff;
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}
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my_stpnmov(to, buff_ptr, FN_REFLEN);
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to[FN_REFLEN-1]= '\0';
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DBUG_PRINT("exit",("to: %s",to));
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DBUG_RETURN(to);
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} /* my_load_path */
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