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/*-------------------------------------------------------------------------
*
* BIG5 <--> UTF8
*
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/backend/utils/mb/conversion_procs/utf8_and_big5/utf8_and_big5.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "fmgr.h"
#include "mb/pg_wchar.h"
#include "../../Unicode/big5_to_utf8.map"
#include "../../Unicode/utf8_to_big5.map"
PG_MODULE_MAGIC;
PG_FUNCTION_INFO_V1(big5_to_utf8);
PG_FUNCTION_INFO_V1(utf8_to_big5);
extern Datum big5_to_utf8(PG_FUNCTION_ARGS);
extern Datum utf8_to_big5(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;
* ----------
*/
Datum
big5_to_utf8(PG_FUNCTION_ARGS)
{
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
CHECK_ENCODING_CONVERSION_ARGS(PG_BIG5, PG_UTF8);
LocalToUtf(src, dest, LUmapBIG5, NULL,
sizeof(LUmapBIG5) / sizeof(pg_local_to_utf), 0, PG_BIG5, len);
PG_RETURN_VOID();
}
Datum
utf8_to_big5(PG_FUNCTION_ARGS)
{
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_BIG5);
UtfToLocal(src, dest, ULmapBIG5, NULL,
sizeof(ULmapBIG5) / sizeof(pg_utf_to_local), 0, PG_BIG5, len);
PG_RETURN_VOID();
}
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