1/*-------------------------------------------------------------------------
2 *
3 * GBK <--> UTF8
4 *
5 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
6 * Portions Copyright (c) 1994, Regents of the University of California
7 *
8 * IDENTIFICATION
9 * src/backend/utils/mb/conversion_procs/utf8_and_gbk/utf8_and_gbk.c
10 *
11 *-------------------------------------------------------------------------
12 */
13
14#include "postgres.h"
15#include "fmgr.h"
16#include "mb/pg_wchar.h"
17#include "../../Unicode/gbk_to_utf8.map"
18#include "../../Unicode/utf8_to_gbk.map"
19
20PG_MODULE_MAGIC;
21
22PG_FUNCTION_INFO_V1(gbk_to_utf8);
23PG_FUNCTION_INFO_V1(utf8_to_gbk);
24
25/* ----------
26 * conv_proc(
27 * INTEGER, -- source encoding id
28 * INTEGER, -- destination encoding id
29 * CSTRING, -- source string (null terminated C string)
30 * CSTRING, -- destination string (null terminated C string)
31 * INTEGER -- source string length
32 * ) returns VOID;
33 * ----------
34 */
35Datum
36gbk_to_utf8(PG_FUNCTION_ARGS)
37{
38 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
39 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
40 int len = PG_GETARG_INT32(4);
41
42 CHECK_ENCODING_CONVERSION_ARGS(PG_GBK, PG_UTF8);
43
44 LocalToUtf(src, len, dest,
45 &gbk_to_unicode_tree,
46 NULL, 0,
47 NULL,
48 PG_GBK);
49
50 PG_RETURN_VOID();
51}
52
53Datum
54utf8_to_gbk(PG_FUNCTION_ARGS)
55{
56 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
57 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
58 int len = PG_GETARG_INT32(4);
59
60 CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_GBK);
61
62 UtfToLocal(src, len, dest,
63 &gbk_from_unicode_tree,
64 NULL, 0,
65 NULL,
66 PG_GBK);
67
68 PG_RETURN_VOID();
69}
70