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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., 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 string in a list of strings. Endspace in x is not compared.
SYNOPSIS
find_type()
x String to find
lib TYPELIB (struct of pointer to values + count)
full_name bitmap of what to do
If & 1 accept only whole names
If & 2 don't expand if half field
If & 4 allow #number# as type
NOTES
If part, uniq field is found and full_name == 0 then x is expanded
to full field.
RETURN
-1 Too many matching values
0 No matching value
>0 Offset+1 in typelib for matched string
*/
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: 0x%lx", x, (long) 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 && my_toupper(&my_charset_latin1,*i) ==
my_toupper(&my_charset_latin1,*j) ; i++, j++) ;
if (! *j)
{
while (*i == ' ')
i++; /* skip_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 "?";
}
/*
Create a copy of a specified TYPELIB structure.
SYNOPSIS
copy_typelib()
root pointer to a MEM_ROOT object for allocations
from pointer to a source TYPELIB structure
RETURN
pointer to the new TYPELIB structure on successful copy, or
NULL otherwise
*/
TYPELIB *copy_typelib(MEM_ROOT *root, TYPELIB *from)
{
TYPELIB *to;
uint i;
if (!from)
return NULL;
if (!(to= (TYPELIB*) alloc_root(root, sizeof(TYPELIB))))
return NULL;
if (!(to->type_names= (const char **)
alloc_root(root, (sizeof(char *) + sizeof(int)) * (from->count + 1))))
return NULL;
to->type_lengths= (unsigned int *)(to->type_names + from->count + 1);
to->count= from->count;
if (from->name)
{
if (!(to->name= strdup_root(root, from->name)))
return NULL;
}
else
to->name= NULL;
for (i= 0; i < from->count; i++)
{
if (!(to->type_names[i]= strmake_root(root, from->type_names[i],
from->type_lengths[i])))
return NULL;
to->type_lengths[i]= from->type_lengths[i];
}
to->type_names[to->count]= NULL;
to->type_lengths[to->count]= 0;
return to;
}
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