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f2553d4306
This adds the option to use ICU as the default locale provider for either the whole cluster or a database. New options for initdb, createdb, and CREATE DATABASE are used to select this. Since some (legacy) code still uses the libc locale facilities directly, we still need to set the libc global locale settings even if ICU is otherwise selected. So pg_database now has three locale-related fields: the existing datcollate and datctype, which are always set, and a new daticulocale, which is only set if ICU is selected. A similar change is made in pg_collation for consistency, but in that case, only the libc-related fields or the ICU-related field is set, never both. Reviewed-by: Julien Rouhaud <rjuju123@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/5e756dd6-0e91-d778-96fd-b1bcb06c161a%402ndquadrant.com
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_collation.h
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* definition of the "collation" system catalog (pg_collation)
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*
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*
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* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/catalog/pg_collation.h
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*
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* NOTES
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* The Catalog.pm module reads this file and derives schema
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* information.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_COLLATION_H
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#define PG_COLLATION_H
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#include "catalog/genbki.h"
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#include "catalog/pg_collation_d.h"
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/* ----------------
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* pg_collation definition. cpp turns this into
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* typedef struct FormData_pg_collation
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* ----------------
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*/
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CATALOG(pg_collation,3456,CollationRelationId)
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{
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Oid oid; /* oid */
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NameData collname; /* collation name */
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/* OID of namespace containing this collation */
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Oid collnamespace BKI_DEFAULT(pg_catalog) BKI_LOOKUP(pg_namespace);
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/* owner of collation */
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Oid collowner BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid);
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char collprovider; /* see constants below */
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bool collisdeterministic BKI_DEFAULT(t);
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int32 collencoding; /* encoding for this collation; -1 = "all" */
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#ifdef CATALOG_VARLEN /* variable-length fields start here */
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text collcollate BKI_DEFAULT(_null_); /* LC_COLLATE setting */
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text collctype BKI_DEFAULT(_null_); /* LC_CTYPE setting */
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text colliculocale BKI_DEFAULT(_null_); /* ICU locale ID */
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text collversion BKI_DEFAULT(_null_); /* provider-dependent
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* version of collation
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* data */
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#endif
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} FormData_pg_collation;
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/* ----------------
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* Form_pg_collation corresponds to a pointer to a row with
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* the format of pg_collation relation.
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* ----------------
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*/
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typedef FormData_pg_collation *Form_pg_collation;
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DECLARE_TOAST(pg_collation, 6175, 6176);
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DECLARE_UNIQUE_INDEX(pg_collation_name_enc_nsp_index, 3164, CollationNameEncNspIndexId, on pg_collation using btree(collname name_ops, collencoding int4_ops, collnamespace oid_ops));
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DECLARE_UNIQUE_INDEX_PKEY(pg_collation_oid_index, 3085, CollationOidIndexId, on pg_collation using btree(oid oid_ops));
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#ifdef EXPOSE_TO_CLIENT_CODE
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#define COLLPROVIDER_DEFAULT 'd'
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#define COLLPROVIDER_ICU 'i'
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#define COLLPROVIDER_LIBC 'c'
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static inline const char *
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collprovider_name(char c)
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{
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switch (c)
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{
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case COLLPROVIDER_ICU:
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return "icu";
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case COLLPROVIDER_LIBC:
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return "libc";
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default:
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return "???";
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}
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}
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#endif /* EXPOSE_TO_CLIENT_CODE */
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extern Oid CollationCreate(const char *collname, Oid collnamespace,
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Oid collowner,
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char collprovider,
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bool collisdeterministic,
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int32 collencoding,
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const char *collcollate, const char *collctype,
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const char *colliculocale,
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const char *collversion,
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bool if_not_exists,
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bool quiet);
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#endif /* PG_COLLATION_H */
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