PostgreSQL Source Code git master
pg_locale_icu.c File Reference
#include "postgres.h"
#include "access/htup_details.h"
#include "catalog/pg_database.h"
#include "catalog/pg_collation.h"
#include "mb/pg_wchar.h"
#include "miscadmin.h"
#include "utils/builtins.h"
#include "utils/formatting.h"
#include "utils/memutils.h"
#include "utils/pg_locale.h"
#include "utils/syscache.h"
Include dependency graph for pg_locale_icu.c:

Go to the source code of this file.

Macros

#define TEXTBUFLEN   1024
 

Functions

pg_locale_t create_pg_locale_icu (Oid collid, MemoryContext context)
 
size_t strlower_icu (char *dst, size_t dstsize, const char *src, ssize_t srclen, pg_locale_t locale)
 
size_t strtitle_icu (char *dst, size_t dstsize, const char *src, ssize_t srclen, pg_locale_t locale)
 
size_t strupper_icu (char *dst, size_t dstsize, const char *src, ssize_t srclen, pg_locale_t locale)
 
size_t strfold_icu (char *dst, size_t dstsize, const char *src, ssize_t srclen, pg_locale_t locale)
 

Macro Definition Documentation

◆ TEXTBUFLEN

#define TEXTBUFLEN   1024

Definition at line 48 of file pg_locale_icu.c.

Function Documentation

◆ create_pg_locale_icu()

pg_locale_t create_pg_locale_icu ( Oid  collid,
MemoryContext  context 
)

Definition at line 148 of file pg_locale_icu.c.

149{
150#ifdef USE_ICU
151 bool deterministic;
152 const char *iculocstr;
153 const char *icurules = NULL;
154 UCollator *collator;
155 pg_locale_t result;
156
157 if (collid == DEFAULT_COLLATION_OID)
158 {
159 HeapTuple tp;
160 Datum datum;
161 bool isnull;
162
164 if (!HeapTupleIsValid(tp))
165 elog(ERROR, "cache lookup failed for database %u", MyDatabaseId);
166
167 /* default database collation is always deterministic */
168 deterministic = true;
169 datum = SysCacheGetAttrNotNull(DATABASEOID, tp,
170 Anum_pg_database_datlocale);
171 iculocstr = TextDatumGetCString(datum);
172 datum = SysCacheGetAttr(DATABASEOID, tp,
173 Anum_pg_database_daticurules, &isnull);
174 if (!isnull)
175 icurules = TextDatumGetCString(datum);
176
177 ReleaseSysCache(tp);
178 }
179 else
180 {
181 Form_pg_collation collform;
182 HeapTuple tp;
183 Datum datum;
184 bool isnull;
185
187 if (!HeapTupleIsValid(tp))
188 elog(ERROR, "cache lookup failed for collation %u", collid);
189 collform = (Form_pg_collation) GETSTRUCT(tp);
190 deterministic = collform->collisdeterministic;
191 datum = SysCacheGetAttrNotNull(COLLOID, tp,
192 Anum_pg_collation_colllocale);
193 iculocstr = TextDatumGetCString(datum);
194 datum = SysCacheGetAttr(COLLOID, tp,
195 Anum_pg_collation_collicurules, &isnull);
196 if (!isnull)
197 icurules = TextDatumGetCString(datum);
198
199 ReleaseSysCache(tp);
200 }
201
202 collator = make_icu_collator(iculocstr, icurules);
203
204 result = MemoryContextAllocZero(context, sizeof(struct pg_locale_struct));
205 result->info.icu.locale = MemoryContextStrdup(context, iculocstr);
206 result->info.icu.ucol = collator;
207 result->provider = COLLPROVIDER_ICU;
208 result->deterministic = deterministic;
209 result->collate_is_c = false;
210 result->ctype_is_c = false;
212 result->collate = &collate_methods_icu_utf8;
213 else
214 result->collate = &collate_methods_icu;
215
216 return result;
217#else
218 /* could get here if a collation was created by a build with ICU */
220 (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
221 errmsg("ICU is not supported in this build")));
222
223 return NULL;
224#endif
225}
#define TextDatumGetCString(d)
Definition: builtins.h:98
Oid collid
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ERROR
Definition: elog.h:39
#define elog(elevel,...)
Definition: elog.h:225
#define ereport(elevel,...)
Definition: elog.h:149
Oid MyDatabaseId
Definition: globals.c:93
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static void * GETSTRUCT(const HeapTupleData *tuple)
Definition: htup_details.h:728
int GetDatabaseEncoding(void)
Definition: mbutils.c:1261
char * MemoryContextStrdup(MemoryContext context, const char *string)
Definition: mcxt.c:1683
void * MemoryContextAllocZero(MemoryContext context, Size size)
Definition: mcxt.c:1215
FormData_pg_collation * Form_pg_collation
Definition: pg_collation.h:58
@ PG_UTF8
Definition: pg_wchar.h:232
uintptr_t Datum
Definition: postgres.h:69
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:257
const struct collate_methods * collate
Definition: pg_locale.h:104
union pg_locale_struct::@158 info
const char * locale
Definition: pg_locale.h:110
bool deterministic
Definition: pg_locale.h:99
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:269
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:221
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:600
Datum SysCacheGetAttrNotNull(int cacheId, HeapTuple tup, AttrNumber attributeNumber)
Definition: syscache.c:631

References pg_locale_struct::collate, pg_locale_struct::collate_is_c, collid, pg_locale_struct::ctype_is_c, pg_locale_struct::deterministic, elog, ereport, errcode(), errmsg(), ERROR, GetDatabaseEncoding(), GETSTRUCT(), HeapTupleIsValid, pg_locale_struct::info, pg_locale_struct::locale, MemoryContextAllocZero(), MemoryContextStrdup(), MyDatabaseId, ObjectIdGetDatum(), PG_UTF8, pg_locale_struct::provider, ReleaseSysCache(), SearchSysCache1(), SysCacheGetAttr(), SysCacheGetAttrNotNull(), and TextDatumGetCString.

Referenced by create_pg_locale(), and init_database_collation().

◆ strfold_icu()

size_t strfold_icu ( char *  dst,
size_t  dstsize,
const char *  src,
ssize_t  srclen,
pg_locale_t  locale 
)

◆ strlower_icu()

size_t strlower_icu ( char *  dst,
size_t  dstsize,
const char *  src,
ssize_t  srclen,
pg_locale_t  locale 
)

◆ strtitle_icu()

size_t strtitle_icu ( char *  dst,
size_t  dstsize,
const char *  src,
ssize_t  srclen,
pg_locale_t  locale 
)

◆ strupper_icu()

size_t strupper_icu ( char *  dst,
size_t  dstsize,
const char *  src,
ssize_t  srclen,
pg_locale_t  locale 
)