typelib.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:3k
- /* 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 */
- /* Functions to handle typelib */
- #include "mysys_priv.h"
- #include <m_string.h>
- #include <m_ctype.h>
- /***************************************************************************
- ** Search after a fieldtype. Endspace in x is not compared.
- ** If part, uniq field is found and full_name == 0 then x is expanded
- ** to full field.
- ** full_name has the following bit values:
- ** If & 1 accept only whole names
- ** If & 2 don't expand if half field
- ** If & 4 allow #number# as type
- ****************************************************************************/
- int find_type(my_string x, TYPELIB *typelib, uint full_name)
- {
- int find,pos,findpos;
- reg1 my_string i;
- reg2 const char *j;
- DBUG_ENTER("find_type");
- DBUG_PRINT("enter",("x: '%s' lib: %lx",x,typelib));
- if (!typelib->count)
- {
- DBUG_PRINT("exit",("no count"));
- DBUG_RETURN(0);
- }
- LINT_INIT(findpos);
- find=0;
- for (pos=0 ; (j=typelib->type_names[pos]) ; pos++)
- {
- for (i=x ; *i && toupper(*i) == toupper(*j) ; i++, j++) ;
- if (! *j)
- {
- while (*i == ' ')
- i++; /* skipp_end_space */
- if (! *i)
- DBUG_RETURN(pos+1);
- }
- if (! *i && (!*j || !(full_name & 1)))
- {
- find++;
- findpos=pos;
- }
- }
- if (find == 0 && (full_name & 4) && x[0] == '#' && strend(x)[-1] == '#' &&
- (findpos=atoi(x+1)-1) >= 0 && (uint) findpos < typelib->count)
- find=1;
- else if (find == 0 || ! x[0])
- {
- DBUG_PRINT("exit",("Couldn't find type"));
- DBUG_RETURN(0);
- }
- else if (find != 1 || (full_name & 1))
- {
- DBUG_PRINT("exit",("Too many possybilities"));
- DBUG_RETURN(-1);
- }
- if (!(full_name & 2))
- (void) strmov(x,typelib->type_names[findpos]);
- DBUG_RETURN(findpos+1);
- } /* find_type */
- /* Get name of type nr 'nr' */
- /* Warning first type is 1, 0 = empty field */
- void make_type(register my_string to, register uint nr, register TYPELIB *typelib)
- {
- DBUG_ENTER("make_type");
- if (!nr)
- to[0]=0;
- else
- (void) strmov(to,get_type(typelib,nr-1));
- DBUG_VOID_RETURN;
- } /* make_type */
- /* Get type */
- /* Warning first type is 0 */
- const char *get_type(TYPELIB *typelib, uint nr)
- {
- if (nr < (uint) typelib->count && typelib->type_names)
- return(typelib->type_names[nr]);
- return "?";
- }