mariadb/mysys/my_append.c

/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA */

#define USES_TYPES				/* sys/types is included */
#include "mysys_priv.h"
#include <sys/stat.h>
#include <m_string.h>
#if defined(HAVE_SYS_UTIME_H)
#include <sys/utime.h>
#elif defined(HAVE_UTIME_H)
#include <utime.h>
#elif !defined(HPUX)
struct utimbuf {
  time_t actime;
  time_t modtime;
};
#endif

	/* Append a file to another */

int my_append(const char *from, const char *to, myf MyFlags)


				/* Dont set MY_FNABP or MY_NABP bits on
					   when calling this funktion */
{
  uint Count;
  File from_file,to_file;
  char buff[IO_SIZE];
  DBUG_ENTER("my_append");
  DBUG_PRINT("my",("from %s to %s MyFlags %d", from, to, MyFlags));

  from_file=to_file= -1;

  if ((from_file=my_open(from,O_RDONLY,MyFlags)) >= 0)
  {
    if ((to_file=my_open(to,O_APPEND | O_WRONLY,MyFlags)) >= 0)
    {
      while ((Count=my_read(from_file,buff,IO_SIZE,MyFlags)) != 0)
	if (Count == (uint) -1 ||
	    my_write(to_file,buff,Count,MYF(MyFlags | MY_NABP)))
	  goto err;
      if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
	DBUG_RETURN(-1);				/* Error on close */
      DBUG_RETURN(0);
    }
  }
err:
  if (from_file >= 0) VOID(my_close(from_file,MyFlags));
  if (to_file >= 0)   VOID(my_close(to_file,MyFlags));
  DBUG_RETURN(-1);
}