1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*-------------------------------------------------------------------------
*
* UHC <--> 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_uhc/utf8_and_uhc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "fmgr.h"
#include "mb/pg_wchar.h"
#include "../../Unicode/uhc_to_utf8.map"
#include "../../Unicode/utf8_to_uhc.map"
PG_MODULE_MAGIC;
PG_FUNCTION_INFO_V1(uhc_to_utf8);
PG_FUNCTION_INFO_V1(utf8_to_uhc);
extern Datum uhc_to_utf8(PG_FUNCTION_ARGS);
extern Datum utf8_to_uhc(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
uhc_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_UHC, PG_UTF8);
LocalToUtf(src, dest, LUmapUHC, NULL,
sizeof(LUmapUHC) / sizeof(pg_local_to_utf), 0, PG_UHC, len);
PG_RETURN_VOID();
}
Datum
utf8_to_uhc(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_UHC);
UtfToLocal(src, dest, ULmapUHC, NULL,
sizeof(ULmapUHC) / sizeof(pg_utf_to_local), 0, PG_UHC, len);
PG_RETURN_VOID();
}
|