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Viewing changes to storage/csv/transparent_file.cc

  • Committer: brian
  • Date: 2008-06-25 05:29:13 UTC
  • Revision ID: brian@localhost.localdomain-20080625052913-6upwo0jsrl4lnapl
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storage/csv/transparent_file.cc
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  along with this program; if not, write to the Free Software
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  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
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#ifdef USE_PRAGMA_IMPLEMENTATION
 
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#pragma implementation        // gcc: Class implementation
 
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#endif
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#include "config.h"
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#include <cstdlib>
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#include "drizzled/internal/my_sys.h"
 
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#include "mysql_priv.h"
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#include "transparent_file.h"
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Transparent_file::Transparent_file() : lower_bound(0), buff_size(IO_SIZE)
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{
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  buff= static_cast<unsigned char *>(malloc(buff_size*sizeof(unsigned char)));
 
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{ 
 
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  buff= (uchar *) my_malloc(buff_size*sizeof(uchar),  MYF(MY_WME)); 
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}
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Transparent_file::~Transparent_file()
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{
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  free(buff);
 
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{ 
 
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  my_free((uchar*)buff, MYF(MY_ALLOW_ZERO_PTR)); 
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}
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void Transparent_file::init_buff(int filedes_arg)
 
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void Transparent_file::init_buff(File filedes_arg)
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{
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  filedes= filedes_arg;
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  /* read the beginning of the file */
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  lower_bound= 0;
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  lseek(filedes, 0, SEEK_SET);
 
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  VOID(my_seek(filedes, 0, MY_SEEK_SET, MYF(0)));
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  if (filedes && buff)
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    upper_bound= my_read(filedes, buff, buff_size, MYF(0));
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}
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unsigned char *Transparent_file::ptr()
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{
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  return buff;
 
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uchar *Transparent_file::ptr()
 
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{ 
 
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  return buff; 
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}
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off_t Transparent_file::start()
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{
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  return lower_bound;
 
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{ 
 
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  return lower_bound; 
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}
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off_t Transparent_file::end()
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{
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  return upper_bound;
 
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{ 
 
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  return upper_bound; 
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}
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off_t Transparent_file::read_next()
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  if ((lower_bound <= offset) && (offset < upper_bound))
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    return buff[offset - lower_bound];
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  lseek(filedes, offset, SEEK_SET);
 
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  VOID(my_seek(filedes, offset, MY_SEEK_SET, MYF(0)));
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  /* read appropriate portion of the file */
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  if ((bytes_read= my_read(filedes, buff, buff_size,
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                           MYF(0))) == MY_FILE_ERROR)