From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/mysys/mf_loadpath.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 mysql/mysys/mf_loadpath.c

(limited to 'mysql/mysys/mf_loadpath.c')

diff --git a/mysql/mysys/mf_loadpath.c b/mysql/mysys/mf_loadpath.c
new file mode 100644
index 0000000..41fb143
--- /dev/null
+++ b/mysql/mysys/mf_loadpath.c
@@ -0,0 +1,72 @@
+/* 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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