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/* Copyright (c) 2000, 2014, 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 <m_string.h>
#include "prealloced_array.h"
#include "mutex_lock.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"));
Prealloced_array<char*, 10, true> full_list(key_memory_MY_TMPDIR_full_list);
memset(tmpdir, 0, sizeof(*tmpdir));
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))) ||
full_list.push_back(copy))
DBUG_RETURN(TRUE);
pathlist=end+1;
}
while (*end);
tmpdir->list=
static_cast<char**>(my_malloc(key_memory_MY_TMPDIR_full_list,
sizeof(char*) * full_list.size(),
MYF(MY_WME)));
if (tmpdir->list == NULL)
DBUG_RETURN(TRUE);
mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
memcpy(tmpdir->list, &full_list[0], sizeof(char*) * full_list.size());
tmpdir->max= full_list.size() - 1;
tmpdir->cur= 0;
DBUG_RETURN(FALSE);
}
char *my_tmpdir(MY_TMPDIR *tmpdir)
{
if (0 == tmpdir->max)
return tmpdir->list[0];
Mutex_lock(&tmpdir->mutex);
char *dir= tmpdir->list[tmpdir->cur];
tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur + 1;
return dir;
}
void free_tmpdir(MY_TMPDIR *tmpdir)
{
if (tmpdir->list == NULL)
return;
for (uint i= 0; i <= tmpdir->max; i++)
my_free(tmpdir->list[i]);
my_free(tmpdir->list);
mysql_mutex_destroy(&tmpdir->mutex);
}
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