postgres/src/include/postgres_ext.h
Thomas Munro 962da900ac Use <stdint.h> and <inttypes.h> for c.h integers.
Redefine our exact width types with standard C99 types and macros,
including int64_t, INT64_MAX, INT64_C(), PRId64 etc.  We were already
using <stdint.h> types in a few places.

One complication is that Windows' <inttypes.h> uses format strings like
"%I64d", "%I32", "%I" for PRI*64, PRI*32, PTR*PTR, instead of mapping to
other standardized format strings like "%lld" etc as seen on other known
systems.  Teach our snprintf.c to understand them.

This removes a lot of configure clutter, and should also allow 64-bit
numbers and other standard types to be used in localized messages
without casting.

Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Discussion: https://postgr.es/m/ME3P282MB3166F9D1F71F787929C0C7E7B6312%40ME3P282MB3166.AUSP282.PROD.OUTLOOK.COM
2024-12-04 15:05:38 +13:00

74 lines
2.2 KiB
C

/*-------------------------------------------------------------------------
*
* postgres_ext.h
*
* This file contains declarations of things that are visible everywhere
* in PostgreSQL *and* are visible to clients of frontend interface libraries.
* For example, the Oid type is part of the API of libpq and other libraries.
*
* Declarations which are specific to a particular interface should
* go in the header file for that interface (such as libpq-fe.h). This
* file is only for fundamental Postgres declarations.
*
* User-written C functions don't count as "external to Postgres."
* Those function much as local modifications to the backend itself, and
* use header files that are otherwise internal to Postgres to interface
* with the backend.
*
* src/include/postgres_ext.h
*
*-------------------------------------------------------------------------
*/
#ifndef POSTGRES_EXT_H
#define POSTGRES_EXT_H
#include <stdint.h>
/*
* Object ID is a fundamental type in Postgres.
*/
typedef unsigned int Oid;
#ifdef __cplusplus
#define InvalidOid (Oid(0))
#else
#define InvalidOid ((Oid) 0)
#endif
#define OID_MAX UINT_MAX
/* you will need to include <limits.h> to use the above #define */
#define atooid(x) ((Oid) strtoul((x), NULL, 10))
/* the above needs <stdlib.h> */
/* Define a signed 64-bit integer type for use in client API declarations. */
typedef int64_t pg_int64;
/*
* Identifiers of error message fields. Kept here to keep common
* between frontend and backend, and also to export them to libpq
* applications.
*/
#define PG_DIAG_SEVERITY 'S'
#define PG_DIAG_SEVERITY_NONLOCALIZED 'V'
#define PG_DIAG_SQLSTATE 'C'
#define PG_DIAG_MESSAGE_PRIMARY 'M'
#define PG_DIAG_MESSAGE_DETAIL 'D'
#define PG_DIAG_MESSAGE_HINT 'H'
#define PG_DIAG_STATEMENT_POSITION 'P'
#define PG_DIAG_INTERNAL_POSITION 'p'
#define PG_DIAG_INTERNAL_QUERY 'q'
#define PG_DIAG_CONTEXT 'W'
#define PG_DIAG_SCHEMA_NAME 's'
#define PG_DIAG_TABLE_NAME 't'
#define PG_DIAG_COLUMN_NAME 'c'
#define PG_DIAG_DATATYPE_NAME 'd'
#define PG_DIAG_CONSTRAINT_NAME 'n'
#define PG_DIAG_SOURCE_FILE 'F'
#define PG_DIAG_SOURCE_LINE 'L'
#define PG_DIAG_SOURCE_FUNCTION 'R'
#endif /* POSTGRES_EXT_H */