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/* Copyright (c) 2000, 2013, 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 02110-1335 USA */
#include "mysys_priv.h"
#include <m_string.h>
#if defined(_WIN32)
#define DELIM ';'
#else
#define DELIM ':'
#endif
my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist)
{
char *end, *copy;
char buff[FN_REFLEN];
DBUG_ENTER("init_tmpdir");
DBUG_PRINT("enter", ("pathlist: %s", pathlist ? pathlist : "NULL"));
mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
if (my_init_dynamic_array(key_memory_MY_TMPDIR_full_list, &tmpdir->full_list,
sizeof(char*), 1, 5, MYF(0)))
goto err;
if (!pathlist || !pathlist[0])
{
/* Get default temporary directory */
pathlist=getenv("TMPDIR"); /* Use this if possible */
#if defined(_WIN32)
if (!pathlist)
pathlist=getenv("TEMP");
if (!pathlist)
pathlist=getenv("TMP");
#endif
if (!pathlist || !pathlist[0])
pathlist= DEFAULT_TMPDIR;
}
do
{
size_t length;
end=strcend(pathlist, DELIM);
strmake(buff, pathlist, (uint) (end-pathlist));
length= cleanup_dirname(buff, buff);
if (!(copy= my_strndup(key_memory_MY_TMPDIR_full_list, buff, length, MYF(MY_WME))) ||
insert_dynamic(&tmpdir->full_list, (uchar*) ©))
DBUG_RETURN(TRUE);
pathlist=end+1;
}
while (*end);
freeze_size(&tmpdir->full_list);
tmpdir->list=(char **)tmpdir->full_list.buffer;
tmpdir->max=tmpdir->full_list.elements-1;
tmpdir->cur=0;
DBUG_RETURN(FALSE);
err:
delete_dynamic(&tmpdir->full_list); /* Safe to free */
mysql_mutex_destroy(&tmpdir->mutex);
DBUG_RETURN(TRUE);
}
char *my_tmpdir(MY_TMPDIR *tmpdir)
{
char *dir;
if (!tmpdir->max)
return tmpdir->list[0];
mysql_mutex_lock(&tmpdir->mutex);
dir=tmpdir->list[tmpdir->cur];
tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur+1;
mysql_mutex_unlock(&tmpdir->mutex);
return dir;
}
void free_tmpdir(MY_TMPDIR *tmpdir)
{
uint i;
if (!tmpdir->full_list.elements)
return;
for (i=0; i<=tmpdir->max; i++)
my_free(tmpdir->list[i]);
delete_dynamic(&tmpdir->full_list);
mysql_mutex_destroy(&tmpdir->mutex);
}
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