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/*@@
@file Handles.c
@author Erik Schnetter
@date 2004/03/07 09:48:53
@desc
Register a symmetry, and query the symmetry name/handle mapping
@version $Id$
@enddesc
@@*/
#include <stdlib.h>
#include <string.h>
#include "cctk.h"
#include "SymBase.h"
/* the rcs ID and its dummy function to use it */
static const char *const rcsid = "$Header$";
CCTK_FILEVERSION (CactusBase_SymBase_Handles_c);
/* Number of registered symmetries */
int SymBase_num_symmetries;
/* The names of these symmetries */
const char **SymBase_symmetry_names;
/*@@
@routine SymBase_SymmetryRegister
@author Erik Schnetter
@date 2004-03-06
@desc
Register a symmetry
@enddesc
@var sym_name
@vtype CCTK_STRING
@vdesc Name of the symmetry
@vio in
@endvar
@returntype CCTK_INT
@returndesc
>=0 symmetry handle
-1 if sym_name has an illegal value
-2 if a symmetry with the same name has already been registered
@endreturndesc
@@*/
CCTK_INT
SymBase_SymmetryRegister (CCTK_STRING const sym_name)
{
int n;
if (!sym_name)
{
return -1; /* illegal argument */
}
for (n = 0; n < SymBase_num_symmetries; ++n)
{
if (strcmp (sym_name, SymBase_symmetry_names[n]) == 0)
{
return -2; /* symmetry exists already */
}
}
SymBase_symmetry_names
= realloc (SymBase_symmetry_names,
(SymBase_num_symmetries + 1) * sizeof *SymBase_symmetry_names);
if (!SymBase_symmetry_names)
{
CCTK_WARN (0, "internal error");
}
SymBase_symmetry_names[SymBase_num_symmetries] = strdup (sym_name);
if (!SymBase_symmetry_names[SymBase_num_symmetries])
{
CCTK_WARN (0, "internal error");
}
++SymBase_num_symmetries;
return SymBase_num_symmetries - 1;
}
/*@@
@routine SymBase_SymmetryHandleOfName
@author Erik Schnetter
@date 2004-03-06
@desc
Map a symmetry name to a symmetry handle
@enddesc
@var sym_name
@vtype CCTK_STRING
@vdesc Name of the symmetry
@vio in
@endvar
@returntype CCTK_INT
@returndesc
>=0 symmetry handle
-1 if sym_name has an illegal value
-2 if no symmetry with that name has been registered
@endreturndesc
@@*/
CCTK_INT
SymBase_SymmetryHandleOfName (CCTK_STRING const sym_name)
{
int n;
if (!sym_name)
{
return -1; /* illegal argument */
}
for (n = 0; n < SymBase_num_symmetries; ++n)
{
if (strcmp (sym_name, SymBase_symmetry_names[n]) == 0)
{
return n; /* found */
}
}
return -2; /* not found */
}
/*@@
@routine SymBase_SymmetryNameOfHandle
@author Erik Schnetter
@date 2004-03-06
@desc
Map a symmetry handle to a symmetry name
@enddesc
@var sym_handle
@vtype CCTK_INT
@vdesc Symmetry name
@vio in
@endvar
@returntype CCTK_POINTER_TO_CONST
@returndesc
char const * containing the symmetry name
NULL if no symmetry with that handle has been registered
@endreturndesc
@@*/
CCTK_POINTER_TO_CONST
SymBase_SymmetryNameOfHandle (CCTK_INT const sym_handle)
{
if (sym_handle < 0 || sym_handle >= SymBase_num_symmetries)
{
return NULL; /* illegal argument */
}
return SymBase_symmetry_names[sym_handle];
}
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