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mperfl.h

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/* mperf - My Perfect Hash generates fast lookup-tables.
 * Copyright (C) 2002 Marcus Perlick
 * mailto: riffraff@users.sourceforge.net
 * 
 * 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; either version 2
 * of the License, or (at your option) any later version.
 * 
 * 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.  */
#ifndef _MPERFL_H_
#define _MPERFL_H_

#include <stdlib.h>

struct sNode;

typedef struct {
  double p;
  const char *str;
  void *value;
} KeyString;

typedef struct {
  size_t keyNo;
  KeyString **keys;
} SSizedKeys;

typedef struct {
  size_t column;
  unsigned char idxBegin;
  unsigned char idxEnd;
 
  struct sNode **swNodes;
} Switch;

typedef enum {
  NT_KEYS,
  NT_SWITCH,
  NT_FINAL
} NodeType;

typedef struct sNode {
  NodeType type;
  union {
    SSizedKeys keys;
    Switch sw;
    KeyString *key;
  } v;
} Node;

typedef struct {
  size_t maxLen;
  Node **nodes;
} MPerf;

MPerf* mperf_ctor( MPerf *mp );

void mperf_dtor( MPerf *mp );

MPerf* mperf_init( MPerf *mp, KeyString *keys, size_t keyNo );

int mperf_finish( MPerf *mp );
#define ERR_DUPKEY 1

KeyString *mperf_find( MPerf *mp, const char *key, size_t keyLen );

KeyString *mperf_search( MPerf *mp, const char *key, size_t keyLen );

int mperf_for_all( MPerf *mp,
           int(*fnctn)(KeyString*, void*),
           void *data );

#endif /* _MPERFL_H_ */

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