mariadb/storage/myisammrg/myrg_create.c
bar@mysql.com 6ff211329f WL#1324 table name to file name encoding
- Encoding itself, implemented as a charset
  "filename". Originally planned to use '.'
  as an escape character, but now changed to '@'
  for two reasons: "ls" does not return
  file names starting with '.' considering them
  as a kind of hidden files; some platforms
  do not allow several dots in a file name.
- replacing many calls of my_snprintf() and
  strnxmov() to the new build_table_filename().
- Adding MY_APPEND_EXT mysys flag, to append
  an extention rather that replace it.
- Replacing all numeric constants in fn_format
  flag arguments to their mysys definitions, e.g.
  MY_UNPACK_FILENAME,
- Predictability in several function/methods:
  when a table name can appear with or withot .frm
  extension. Some functions/methods were changed
  so accept names strictly with .frm, other - strictly
  without .frm extensions. Several DBUG_ASSERTs were
  added to check whether an extension is passed.
Many files:
  table name to file name encoding
mysql_priv.h:
  Prototypes for new table name encoding tools.
ctype-utf8.c:
  Implementing "filename" charset for
  table name to file name encoding.
row0mysql.c:
  Fixing table name prefix.
mf_format.c:
  Adding MY_APPEND_EXT processing.
Many files:
  Fixing tests.
my_sys.h:
  Adding new flag to append rather than replace an extension.
m_ctype.h:
  Adding "filename" charset definition.
2005-12-31 09:01:26 +04:00

73 lines
2.2 KiB
C

/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Create a MYMERGE_-file */
#include "myrg_def.h"
/* create file named 'name' and save filenames in it
table_names should be NULL or a vector of string-pointers with
a NULL-pointer last
*/
int myrg_create(const char *name, const char **table_names,
uint insert_method, my_bool fix_names)
{
int save_errno;
uint errpos;
File file;
char buff[FN_REFLEN],*end;
DBUG_ENTER("myrg_create");
errpos=0;
if ((file = my_create(fn_format(buff,name,"",MYRG_NAME_EXT,
MY_UNPACK_FILENAME|MY_APPEND_EXT),0,
O_RDWR | O_EXCL | O_NOFOLLOW,MYF(MY_WME))) < 0)
goto err;
errpos=1;
if (table_names)
{
for ( ; *table_names ; table_names++)
{
strmov(buff,*table_names);
if (fix_names)
fn_same(buff,name,4);
*(end=strend(buff))='\n';
end[1]=0;
if (my_write(file,buff,(uint) (end-buff+1),
MYF(MY_WME | MY_NABP)))
goto err;
}
}
if (insert_method != MERGE_INSERT_DISABLED)
{
end=strxmov(buff,"#INSERT_METHOD=",
get_type(&merge_insert_method,insert_method-1),"\n",NullS);
if (my_write(file,buff,(uint) (end-buff),MYF(MY_WME | MY_NABP)))
goto err;
}
if (my_close(file,MYF(0)))
goto err;
DBUG_RETURN(0);
err:
save_errno=my_errno ? my_errno : -1;
switch (errpos) {
case 1:
VOID(my_close(file,MYF(0)));
}
DBUG_RETURN(my_errno=save_errno);
} /* myrg_create */