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ltree support for multibyte encodings. Patch was made by

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laser <laserlist@pgsqldb.com> with some editorization by me.
This commit is contained in:
Teodor Sigaev
2008-06-30 18:30:48 +00:00
parent 995fb74202
commit 8eee65c996
5 changed files with 136 additions and 87 deletions
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25
contrib/ltree/ltree.h
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@ -1,17 +1,19 @@
/* $PostgreSQL: pgsql/contrib/ltree/ltree.h,v 1.20 2008/05/12 00:00:42 alvherre Exp $ */
/* $PostgreSQL: pgsql/contrib/ltree/ltree.h,v 1.21 2008/06/30 18:30:48 teodor Exp $ */
#ifndef __LTREE_H__
#define __LTREE_H__
#include "postgres.h"
#include "fmgr.h"
#include "tsearch/ts_locale.h"
typedef struct
{
uint8 len;
uint16 len;
char name[1];
} ltree_level;
#define LEVEL_HDRSIZE (sizeof(uint8))
#define LEVEL_HDRSIZE (offsetof(ltree_level,name))
#define LEVEL_NEXT(x) ( (ltree_level*)( ((char*)(x)) + MAXALIGN(((ltree_level*)(x))->len + LEVEL_HDRSIZE) ) )
typedef struct
@ -21,7 +23,7 @@ typedef struct
char data[1];
} ltree;
#define LTREE_HDRSIZE MAXALIGN(VARHDRSZ + sizeof(uint16))
#define LTREE_HDRSIZE MAXALIGN( offsetof(ltree, data) )
#define LTREE_FIRST(x) ( (ltree_level*)( ((char*)(x))+LTREE_HDRSIZE ) )
@ -30,12 +32,12 @@ typedef struct
typedef struct
{
int4 val;
uint8 len;
uint16 len;
uint8 flag;
char name[1];
} lquery_variant;
#define LVAR_HDRSIZE MAXALIGN(sizeof(uint8)*2 + sizeof(int4))
#define LVAR_HDRSIZE MAXALIGN(offsetof(lquery_variant, name))
#define LVAR_NEXT(x) ( (lquery_variant*)( ((char*)(x)) + MAXALIGN(((lquery_variant*)(x))->len) + LVAR_HDRSIZE ) )
#define LVAR_ANYEND 0x01
@ -52,7 +54,7 @@ typedef struct
char variants[1];
} lquery_level;
#define LQL_HDRSIZE MAXALIGN( sizeof(uint16)*5 )
#define LQL_HDRSIZE MAXALIGN( offsetof(lquery_level,variants) )
#define LQL_NEXT(x) ( (lquery_level*)( ((char*)(x)) + MAXALIGN(((lquery_level*)(x))->totallen) ) )
#define LQL_FIRST(x) ( (lquery_variant*)( ((char*)(x))+LQL_HDRSIZE ) )
@ -73,12 +75,12 @@ typedef struct
char data[1];
} lquery;
#define LQUERY_HDRSIZE MAXALIGN(VARHDRSZ + 3*sizeof(uint16))
#define LQUERY_HDRSIZE MAXALIGN( offsetof(lquery, data) )
#define LQUERY_FIRST(x) ( (lquery_level*)( ((char*)(x))+LQUERY_HDRSIZE ) )
#define LQUERY_HASNOT 0x01
#define ISALNUM(x) ( isalnum((unsigned char)(x)) || (x) == '_' )
#define ISALNUM(x) ( t_isalpha(x) || t_isdigit(x) || ( pg_mblen(x) == 1 && t_iseq((x), '_') ) )
/* full text query */
@ -156,9 +158,10 @@ bool ltree_execute(ITEM * curitem, void *checkval,
int ltree_compare(const ltree * a, const ltree * b);
bool inner_isparent(const ltree * c, const ltree * p);
bool compare_subnode(ltree_level * t, char *q, int len,
int (*cmpptr) (const char *, const char *, size_t), bool anyend);
bool compare_subnode(ltree_level * t, char *q, int len,
int (*cmpptr) (const char *, const char *, size_t), bool anyend);
ltree *lca_inner(ltree ** a, int len);
int ltree_strncasecmp(const char *a, const char *b, size_t s);
#define PG_GETARG_LTREE(x) ((ltree*)DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(x))))
#define PG_GETARG_LTREE_COPY(x) ((ltree*)DatumGetPointer(PG_DETOAST_DATUM_COPY(PG_GETARG_DATUM(x))))