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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* Functions to handle typelib */
#include "config.h"
#include <stdio.h>
#include "drizzled/internal/m_string.h"
#include "drizzled/charset_info.h"
#include "drizzled/typelib.h"
namespace drizzled
{
static const char field_separator=',';
int find_type_or_exit(char *x, TYPELIB *typelib, const char *option)
{
int res;
const char **ptr;
if ((res= find_type(x, typelib, 2)) <= 0)
{
ptr= typelib->type_names;
if (!*x)
fprintf(stderr, "No option given to %s\n", option);
else
fprintf(stderr, "Unknown option to %s: %s\n", option, x);
fprintf(stderr, "Alternatives are: '%s'", *ptr);
while (*++ptr)
fprintf(stderr, ",'%s'", *ptr);
fprintf(stderr, "\n");
exit(1);
}
return res;
}
/*
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
If & 8 use ',' as string terminator
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(char *x, const TYPELIB *typelib, uint32_t full_name)
{
int find,pos,findpos=0;
register char * i;
register const char *j;
if (!typelib->count)
{
return(0);
}
find=0;
for (pos=0 ; (j=typelib->type_names[pos]) ; pos++)
{
for (i=x ;
*i && (!(full_name & 8) || *i != field_separator) &&
my_toupper(&my_charset_utf8_general_ci,*i) ==
my_toupper(&my_charset_utf8_general_ci,*j) ; i++, j++) ;
if (! *j)
{
while (*i == ' ')
i++; /* skip_end_space */
if (! *i || ((full_name & 8) && *i == field_separator))
return(pos+1);
}
if ((!*i && (!(full_name & 8) || *i != field_separator)) &&
(!*j || !(full_name & 1)))
{
find++;
findpos=pos;
}
}
if (find == 0 && (full_name & 4) && x[0] == '#' && strchr(x, '\0')[-1] == '#' &&
(findpos=atoi(x+1)-1) >= 0 && (uint32_t) findpos < typelib->count)
find=1;
else if (find == 0 || ! x[0])
{
return(0);
}
else if (find != 1 || (full_name & 1))
{
return(-1);
}
if (!(full_name & 2))
(void) strcpy(x,typelib->type_names[findpos]);
return(findpos+1);
} /* find_type */
/* Get name of type nr 'nr' */
/* Warning first type is 1, 0 = empty field */
void make_type(register char * to, register uint32_t nr,
register TYPELIB *typelib)
{
if (!nr)
to[0]=0;
else
(void) strcpy(to,get_type(typelib,nr-1));
return;
} /* make_type */
/* Get type */
/* Warning first type is 0 */
const char *get_type(TYPELIB *typelib, uint32_t nr)
{
if (nr < (uint32_t) typelib->count && typelib->type_names)
return(typelib->type_names[nr]);
return "?";
}
/*
Create an integer value to represent the supplied comma-seperated
string where each string in the TYPELIB denotes a bit position.
SYNOPSIS
find_typeset()
x string to decompose
lib TYPELIB (struct of pointer to values + count)
err index (not char position) of string element which was not
found or 0 if there was no error
RETURN
a integer representation of the supplied string
*/
uint64_t find_typeset(char *x, TYPELIB *lib, int *err)
{
uint64_t result;
int find;
char *i;
if (!lib->count)
{
return(0);
}
result= 0;
*err= 0;
while (*x)
{
(*err)++;
i= x;
while (*x && *x != field_separator) x++;
if ((find= find_type(i, lib, 2 | 8) - 1) < 0)
return(0);
result|= (1ULL << find);
}
*err= 0;
return(result);
} /* find_set */
/*
Create a copy of a specified TYPELIB structure.
SYNOPSIS
copy_typelib()
root pointer to a memory::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(memory::Root *root, TYPELIB *from)
{
TYPELIB *to;
uint32_t i;
if (!from)
return NULL;
if (!(to= (TYPELIB*) root->alloc_root(sizeof(TYPELIB))))
return NULL;
if (!(to->type_names= (const char **)
root->alloc_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= root->strdup_root(from->name)))
return NULL;
}
else
to->name= NULL;
for (i= 0; i < from->count; i++)
{
if (!(to->type_names[i]= root->strmake_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;
}
} /* namespace drizzled */
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