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/*-------------------------------------------------------------------------
*
* spell.h
*
* Declarations for ISpell dictionary
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
*
* src/include/tsearch/dicts/spell.h
*
*-------------------------------------------------------------------------
*/
#ifndef __SPELL_H__
#define __SPELL_H__
#include "regex/regex.h"
#include "tsearch/dicts/regis.h"
#include "tsearch/ts_public.h"
/*
* Max length of a flag name. Names longer than this will be truncated
* to the maximum.
*/
#define MAXFLAGLEN 16
struct SPNode;
typedef struct
{
uint32 val:8,
isword:1,
compoundflag:4,
affix:19;
struct SPNode *node;
} SPNodeData;
/*
* Names of FF_ are correlated with Hunspell options in affix file
* http://hunspell.sourceforge.net/
*/
#define FF_COMPOUNDONLY 0x01
#define FF_COMPOUNDBEGIN 0x02
#define FF_COMPOUNDMIDDLE 0x04
#define FF_COMPOUNDLAST 0x08
#define FF_COMPOUNDFLAG ( FF_COMPOUNDBEGIN | FF_COMPOUNDMIDDLE | FF_COMPOUNDLAST )
#define FF_DICTFLAGMASK 0x0f
typedef struct SPNode
{
uint32 length;
SPNodeData data[1];
} SPNode;
#define SPNHDRSZ (offsetof(SPNode,data))
typedef struct spell_struct
{
union
{
/*
* flag is filled in by NIImportDictionary. After NISortDictionary, d
* is valid and flag is invalid.
*/
char flag[MAXFLAGLEN];
struct
{
int affix;
int len;
} d;
} p;
char word[1]; /* variable length, null-terminated */
} SPELL;
#define SPELLHDRSZ (offsetof(SPELL, word))
typedef struct aff_struct
{
uint32 flag:8,
type:1,
flagflags:7,
issimple:1,
isregis:1,
replen:14;
char *find;
char *repl;
union
{
regex_t regex;
Regis regis;
} reg;
} AFFIX;
/*
* affixes use dictionary flags too
*/
#define FF_COMPOUNDPERMITFLAG 0x10
#define FF_COMPOUNDFORBIDFLAG 0x20
#define FF_CROSSPRODUCT 0x40
/*
* Don't change the order of these. Initialization sorts by these,
* and expects prefixes to come first after sorting.
*/
#define FF_SUFFIX 1
#define FF_PREFIX 0
struct AffixNode;
typedef struct
{
uint32 val:8,
naff:24;
AFFIX **aff;
struct AffixNode *node;
} AffixNodeData;
typedef struct AffixNode
{
uint32 isvoid:1,
length:31;
AffixNodeData data[1];
} AffixNode;
#define ANHRDSZ (offsetof(AffixNode, data))
typedef struct
{
char *affix;
int len;
bool issuffix;
} CMPDAffix;
typedef struct
{
int maffixes;
int naffixes;
AFFIX *Affix;
AffixNode *Suffix;
AffixNode *Prefix;
SPNode *Dictionary;
char **AffixData;
int lenAffixData;
int nAffixData;
CMPDAffix *CompoundAffix;
unsigned char flagval[256];
bool usecompound;
/*
* Remaining fields are only used during dictionary construction; they are
* set up by NIStartBuild and cleared by NIFinishBuild.
*/
MemoryContext buildCxt; /* temp context for construction */
/* Temporary array of all words in the dict file */
SPELL **Spell;
int nspell; /* number of valid entries in Spell array */
int mspell; /* allocated length of Spell array */
/* These are used to allocate "compact" data without palloc overhead */
char *firstfree; /* first free address (always maxaligned) */
size_t avail; /* free space remaining at firstfree */
} IspellDict;
extern TSLexeme *NINormalizeWord(IspellDict *Conf, char *word);
extern void NIStartBuild(IspellDict *Conf);
extern void NIImportAffixes(IspellDict *Conf, const char *filename);
extern void NIImportDictionary(IspellDict *Conf, const char *filename);
extern void NISortDictionary(IspellDict *Conf);
extern void NISortAffixes(IspellDict *Conf);
extern void NIFinishBuild(IspellDict *Conf);
#endif
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