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/*-------------------------------------------------------------------------
*
* WIN <--> UTF8
*
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/backend/utils/mb/conversion_procs/utf8_and_win/utf8_and_win.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "fmgr.h"
#include "mb/pg_wchar.h"
#include "../../Unicode/utf8_to_win1250.map"
#include "../../Unicode/utf8_to_win1251.map"
#include "../../Unicode/utf8_to_win1252.map"
#include "../../Unicode/utf8_to_win1253.map"
#include "../../Unicode/utf8_to_win1254.map"
#include "../../Unicode/utf8_to_win1255.map"
#include "../../Unicode/utf8_to_win1256.map"
#include "../../Unicode/utf8_to_win1257.map"
#include "../../Unicode/utf8_to_win1258.map"
#include "../../Unicode/utf8_to_win866.map"
#include "../../Unicode/utf8_to_win874.map"
#include "../../Unicode/win1250_to_utf8.map"
#include "../../Unicode/win1251_to_utf8.map"
#include "../../Unicode/win1252_to_utf8.map"
#include "../../Unicode/win1253_to_utf8.map"
#include "../../Unicode/win1254_to_utf8.map"
#include "../../Unicode/win1255_to_utf8.map"
#include "../../Unicode/win1256_to_utf8.map"
#include "../../Unicode/win1257_to_utf8.map"
#include "../../Unicode/win866_to_utf8.map"
#include "../../Unicode/win874_to_utf8.map"
#include "../../Unicode/win1258_to_utf8.map"
PG_MODULE_MAGIC;
PG_FUNCTION_INFO_V1(win_to_utf8);
PG_FUNCTION_INFO_V1(utf8_to_win);
extern Datum win_to_utf8(PG_FUNCTION_ARGS);
extern Datum utf8_to_win(PG_FUNCTION_ARGS);
/* ----------
* conv_proc(
* INTEGER, -- source encoding id
* INTEGER, -- destination encoding id
* CSTRING, -- source string (null terminated C string)
* CSTRING, -- destination string (null terminated C string)
* INTEGER -- source string length
* ) returns VOID;
* ----------
*/
typedef struct
{
pg_enc encoding;
pg_local_to_utf *map1; /* to UTF8 map name */
pg_utf_to_local *map2; /* from UTF8 map name */
int size1; /* size of map1 */
int size2; /* size of map2 */
} pg_conv_map;
static pg_conv_map maps[] = {
{PG_WIN866, LUmapWIN866, ULmapWIN866,
sizeof(LUmapWIN866) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN866) / sizeof(pg_utf_to_local)},
{PG_WIN874, LUmapWIN874, ULmapWIN874,
sizeof(LUmapWIN874) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN874) / sizeof(pg_utf_to_local)},
{PG_WIN1250, LUmapWIN1250, ULmapWIN1250,
sizeof(LUmapWIN1250) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1250) / sizeof(pg_utf_to_local)},
{PG_WIN1251, LUmapWIN1251, ULmapWIN1251,
sizeof(LUmapWIN1251) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1251) / sizeof(pg_utf_to_local)},
{PG_WIN1252, LUmapWIN1252, ULmapWIN1252,
sizeof(LUmapWIN1252) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1252) / sizeof(pg_utf_to_local)},
{PG_WIN1253, LUmapWIN1253, ULmapWIN1253,
sizeof(LUmapWIN1253) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1253) / sizeof(pg_utf_to_local)},
{PG_WIN1254, LUmapWIN1254, ULmapWIN1254,
sizeof(LUmapWIN1254) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1254) / sizeof(pg_utf_to_local)},
{PG_WIN1255, LUmapWIN1255, ULmapWIN1255,
sizeof(LUmapWIN1255) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1255) / sizeof(pg_utf_to_local)},
{PG_WIN1256, LUmapWIN1256, ULmapWIN1256,
sizeof(LUmapWIN1256) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1256) / sizeof(pg_utf_to_local)},
{PG_WIN1257, LUmapWIN1257, ULmapWIN1257,
sizeof(LUmapWIN1257) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1257) / sizeof(pg_utf_to_local)},
{PG_WIN1258, LUmapWIN1258, ULmapWIN1258,
sizeof(LUmapWIN1258) / sizeof(pg_local_to_utf),
sizeof(ULmapWIN1258) / sizeof(pg_utf_to_local)},
};
Datum
win_to_utf8(PG_FUNCTION_ARGS)
{
int encoding = PG_GETARG_INT32(0);
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
int i;
CHECK_ENCODING_CONVERSION_ARGS(-1, PG_UTF8);
for (i = 0; i < sizeof(maps) / sizeof(pg_conv_map); i++)
{
if (encoding == maps[i].encoding)
{
LocalToUtf(src, dest, maps[i].map1, NULL, maps[i].size1, 0, encoding, len);
PG_RETURN_VOID();
}
}
ereport(ERROR,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("unexpected encoding ID %d for WIN character sets", encoding)));
PG_RETURN_VOID();
}
Datum
utf8_to_win(PG_FUNCTION_ARGS)
{
int encoding = PG_GETARG_INT32(1);
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
int i;
CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, -1);
for (i = 0; i < sizeof(maps) / sizeof(pg_conv_map); i++)
{
if (encoding == maps[i].encoding)
{
UtfToLocal(src, dest, maps[i].map2, NULL, maps[i].size2, 0, encoding, len);
PG_RETURN_VOID();
}
}
ereport(ERROR,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("unexpected encoding ID %d for WIN character sets", encoding)));
PG_RETURN_VOID();
}
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