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/*
* HT Editor
* htatom.cc
*
* Copyright (C) 1999, 2000, 2001 Stefan Weyergraf (stefan@weyergraf.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "htatom.h"
#include "htdata.h"
#include <string.h>
ht_stree *atoms;
void *find_atom(HT_ATOM atom)
{
if (atom) { // atom 0 is special !
ht_data_uint a(atom);
ht_data_ptr *d=(ht_data_ptr*)atoms->get(&a);
if (d) return d->value;
}
return NULL;
}
HT_ATOM find_atom_rev(void *data)
{
if (data) {
ht_data_uint *key=NULL;
ht_data_ptr *value;
while ((key=(ht_data_uint*)atoms->enum_next((ht_data**)&value, key))) {
if (value->value==data) return key->value;
}
}
return 0;
}
bool register_atom(HT_ATOM atom, void *data)
{
if (!find_atom(atom)) {
atoms->insert(new ht_data_uint(atom), new ht_data_ptr(data));
return true;
}
return false;
}
bool unregister_atom(HT_ATOM atom)
{
ht_data_uint a(atom);
atoms->del(&a);
return true;
}
/*
* INIT
*/
bool init_atom()
{
atoms=new ht_stree();
atoms->init(compare_keys_uint);
return true;
}
/*
* DONE
*/
void done_atom()
{
atoms->destroy();
delete atoms;
}
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