fts1_porter.c File Reference

Go to the source code of this file.

Classes
struct	porter_tokenizer
struct	porter_tokenizer_cursor
Defines
#define	idChar(C)   (((ch=C)&0x80)!=0 || (ch>0x2f && isIdChar[ch-0x30]))
#define	isDelim(C)   (((ch=C)&0x80)==0 && (ch<0x30 || !isIdChar[ch-0x30]))
Functions
static int	porterCreate (int argc, const char *const *argv, sqlite3_tokenizer **ppTokenizer)
static int	porterDestroy (sqlite3_tokenizer *pTokenizer)
static int	porterOpen (sqlite3_tokenizer *pTokenizer, const char *zInput, int nInput, sqlite3_tokenizer_cursor **ppCursor)
static int	porterClose (sqlite3_tokenizer_cursor *pCursor)
static int	isVowel (const char *)
static int	isConsonant (const char *z)
static int	m_gt_0 (const char *z)
static int	m_eq_1 (const char *z)
static int	m_gt_1 (const char *z)
static int	hasVowel (const char *z)
static int	doubleConsonant (const char *z)
static int	star_oh (const char *z)
static int	stem (char **pz, const char *zFrom, const char *zTo, int(*xCond)(const char *))
static void	copy_stemmer (const char *zIn, int nIn, char *zOut, int *pnOut)
static void	porter_stemmer (const char *zIn, int nIn, char *zOut, int *pnOut)
static int	porterNext (sqlite3_tokenizer_cursor *pCursor, const char **pzToken, int *pnBytes, int *piStartOffset, int *piEndOffset, int *piPosition)
void	sqlite3Fts1PorterTokenizerModule (sqlite3_tokenizer_module const **ppModule)
Variables
static const sqlite3_tokenizer_module	porterTokenizerModule
static const char	cType []
static const char	isIdChar []

---

Define Documentation

#define idChar

(

C

)

(((ch=C)&0x80)!=0 || (ch>0x2f && isIdChar[ch-0x30]))

Definition at line 571 of file fts1_porter.c.

#define isDelim

(

C

)

(((ch=C)&0x80)==0 && (ch<0x30 || !isIdChar[ch-0x30]))

Definition at line 572 of file fts1_porter.c.

Referenced by porterNext(), and simpleNext().

---

Function Documentation

static void copy_stemmer	(	const char *	zIn,
		int	nIn,
		char *	zOut,
		int *	pnOut
	)			[static]

Definition at line 293 of file fts1_porter.c.

Referenced by porter_stemmer().

static int doubleConsonant

(

const char *

z

)

[static]

Definition at line 236 of file fts1_porter.c.

References isConsonant().

Referenced by porter_stemmer().

static int hasVowel

(

const char *

z

)

[static]

Definition at line 225 of file fts1_porter.c.

References isConsonant().

Referenced by porter_stemmer().

static int isConsonant

(

const char *

z

)

[static]

Definition at line 149 of file fts1_porter.c.

References cType, and isVowel().

Referenced by doubleConsonant(), hasVowel(), isVowel(), m_eq_1(), m_gt_0(), m_gt_1(), and star_oh().

static int isVowel

(

const char *

z

)

[static]

Definition at line 158 of file fts1_porter.c.

References cType, and isConsonant().

Referenced by isConsonant(), m_eq_1(), m_gt_0(), m_gt_1(), and star_oh().

static int m_eq_1

(

const char *

z

)

[static]

Definition at line 197 of file fts1_porter.c.

References isConsonant(), and isVowel().

Referenced by porter_stemmer().

static int m_gt_0

(

const char *

z

)

[static]

Definition at line 187 of file fts1_porter.c.

References isConsonant(), and isVowel().

Referenced by porter_stemmer().

static int m_gt_1

(

const char *

z

)

[static]

Definition at line 211 of file fts1_porter.c.

References isConsonant(), and isVowel().

Referenced by porter_stemmer().

static void porter_stemmer	(	const char *	zIn,
		int	nIn,
		char *	zOut,
		int *	pnOut
	)			[static]

Definition at line 340 of file fts1_porter.c.

References copy_stemmer(), doubleConsonant(), hasVowel(), m_eq_1(), m_gt_0(), m_gt_1(), star_oh(), and stem().

Referenced by porterNext().

static int porterClose

(

sqlite3_tokenizer_cursor *

pCursor

)

[static]

Definition at line 121 of file fts1_porter.c.

References SQLITE_OK, and porter_tokenizer_cursor::zToken.

static int porterCreate	(	int	argc,
		const char *const *	argv,
		sqlite3_tokenizer **	ppTokenizer
	)			[static]

Definition at line 64 of file fts1_porter.c.

References porter_tokenizer::base, SQLITE_NOMEM, and SQLITE_OK.

static int porterDestroy

(

sqlite3_tokenizer *

pTokenizer

)

[static]

Definition at line 79 of file fts1_porter.c.

References SQLITE_OK.

static int porterNext	(	sqlite3_tokenizer_cursor *	pCursor,
		const char **	pzToken,
		int *	pnBytes,
		int *	piStartOffset,
		int *	piEndOffset,
		int *	piPosition
	)			[static]

Definition at line 578 of file fts1_porter.c.

References porter_tokenizer_cursor::iOffset, isDelim, porter_tokenizer_cursor::iToken, porter_tokenizer_cursor::nAllocated, porter_tokenizer_cursor::nInput, porter_stemmer(), SQLITE_DONE, SQLITE_NOMEM, SQLITE_OK, porter_tokenizer_cursor::zInput, and porter_tokenizer_cursor::zToken.

static int porterOpen	(	sqlite3_tokenizer *	pTokenizer,
		const char *	zInput,
		int	nInput,
		sqlite3_tokenizer_cursor **	ppCursor
	)			[static]

Definition at line 90 of file fts1_porter.c.

References porter_tokenizer_cursor::base, porter_tokenizer_cursor::iOffset, porter_tokenizer_cursor::iToken, porter_tokenizer_cursor::nAllocated, porter_tokenizer_cursor::nInput, SQLITE_NOMEM, SQLITE_OK, porter_tokenizer_cursor::zInput, and porter_tokenizer_cursor::zToken.

void sqlite3Fts1PorterTokenizerModule

(

sqlite3_tokenizer_module const **

ppModule

)

Definition at line 637 of file fts1_porter.c.

Referenced by constructVtab().

static int star_oh

(

const char *

z

)

[static]

Definition at line 248 of file fts1_porter.c.

References isConsonant(), and isVowel().

Referenced by porter_stemmer().

static int stem	(	char **	pz,
		const char *	zFrom,
		const char *	zTo,
		int(*)(const char *)	xCond
	)			[static]

Definition at line 268 of file fts1_porter.c.

Referenced by porter_stemmer().

---

Variable Documentation

const char cType[] [static]

Initial value:

 {
   0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0,
   1, 1, 1, 2, 1
}

Definition at line 130 of file fts1_porter.c.

Referenced by isConsonant(), and isVowel().

const char isIdChar[] [static]

Initial value:

 {

    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,  
    0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,  
    0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,  
}

Definition at line 563 of file fts1_porter.c.

static const sqlite3_tokenizer_module porterTokenizerModule [static]

Initial value:

 {
  0,
  porterCreate,
  porterDestroy,
  porterOpen,
  porterClose,
  porterNext,
}

Definition at line 58 of file fts1_porter.c.