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/* Copyright (C) 2000 MySQL AB
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 */
/* Open a temporary file and cache it with io_cache. Delete it on close */
#include "config.h"
#include "drizzled/internal/my_sys.h"
#include "drizzled/internal/m_string.h"
#include "drizzled/internal/my_static.h"
#include "drizzled/internal/iocache.h"
#include "drizzled/error.h"
namespace drizzled
{
namespace internal
{
/*
** Open tempfile cached by st_io_cache
** Should be used when no seeks are done (only reinit_io_buff)
** Return false if cache is inited ok
** The actual file is created when the st_io_cache buffer gets filled
** If dir is not given, use TMPDIR.
*/
bool st_io_cache::open_cached_file(const char *dir_arg, const char *prefix_arg,
size_t cache_size_arg, myf cache_myflags)
{
dir= dir_arg ? strdup(dir_arg) : (char*) 0;
prefix= (prefix_arg ? strdup(prefix_arg) : (char*) 0);
if ((dir == NULL) || (prefix == NULL))
return true;
file_name= 0;
buffer= 0; /* Mark that not open */
if (not init_io_cache(-1, cache_size_arg,WRITE_CACHE,0L,0, MYF(cache_myflags | MY_NABP)))
{
return false;
}
free(dir);
free(prefix);
return true;
}
/* Create the temporary file */
bool st_io_cache::real_open_cached_file()
{
char name_buff[FN_REFLEN];
if ((file= create_temp_file(name_buff, dir, prefix, MYF(MY_WME))) >= 0)
{
my_delete(name_buff,MYF(MY_WME | ME_NOINPUT));
return false;
}
return true;
}
void st_io_cache::close_cached_file()
{
if (my_b_inited(this))
{
int _file= file;
file= -1; /* Don't flush data */
(void) end_io_cache();
if (_file >= 0)
{
(void) my_close(_file, MYF(0));
#ifdef CANT_DELETE_OPEN_FILES
if (file_name)
{
(void) my_delete(file_name, MYF(MY_WME | ME_NOINPUT));
free(file_name);
}
#endif
}
free(dir);
free(prefix);
}
}
} /* namespace internal */
} /* namespace drizzled */
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