PostgreSQL Source Code git master
utf8_and_win.c
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1/*-------------------------------------------------------------------------
2 *
3 * WIN <--> UTF8
4 *
5 * Portions Copyright (c) 1996-2025, 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_win/utf8_and_win.c
10 *
11 *-------------------------------------------------------------------------
12 */
13
14#include "postgres.h"
15#include "fmgr.h"
16#include "mb/pg_wchar.h"
17#include "../../Unicode/utf8_to_win1250.map"
18#include "../../Unicode/utf8_to_win1251.map"
19#include "../../Unicode/utf8_to_win1252.map"
20#include "../../Unicode/utf8_to_win1253.map"
21#include "../../Unicode/utf8_to_win1254.map"
22#include "../../Unicode/utf8_to_win1255.map"
23#include "../../Unicode/utf8_to_win1256.map"
24#include "../../Unicode/utf8_to_win1257.map"
25#include "../../Unicode/utf8_to_win1258.map"
26#include "../../Unicode/utf8_to_win866.map"
27#include "../../Unicode/utf8_to_win874.map"
28#include "../../Unicode/win1250_to_utf8.map"
29#include "../../Unicode/win1251_to_utf8.map"
30#include "../../Unicode/win1252_to_utf8.map"
31#include "../../Unicode/win1253_to_utf8.map"
32#include "../../Unicode/win1254_to_utf8.map"
33#include "../../Unicode/win1255_to_utf8.map"
34#include "../../Unicode/win1256_to_utf8.map"
35#include "../../Unicode/win1257_to_utf8.map"
36#include "../../Unicode/win866_to_utf8.map"
37#include "../../Unicode/win874_to_utf8.map"
38#include "../../Unicode/win1258_to_utf8.map"
39
41
44
45/* ----------
46 * conv_proc(
47 * INTEGER, -- source encoding id
48 * INTEGER, -- destination encoding id
49 * CSTRING, -- source string (null terminated C string)
50 * CSTRING, -- destination string (null terminated C string)
51 * INTEGER, -- source string length
52 * BOOL -- if true, don't throw an error if conversion fails
53 * ) returns INTEGER;
54 *
55 * Returns the number of bytes successfully converted.
56 * ----------
57 */
58
59typedef struct
60{
62 const pg_mb_radix_tree *map1; /* to UTF8 map name */
63 const pg_mb_radix_tree *map2; /* from UTF8 map name */
65
66static const pg_conv_map maps[] = {
67 {PG_WIN866, &win866_to_unicode_tree, &win866_from_unicode_tree},
68 {PG_WIN874, &win874_to_unicode_tree, &win874_from_unicode_tree},
69 {PG_WIN1250, &win1250_to_unicode_tree, &win1250_from_unicode_tree},
70 {PG_WIN1251, &win1251_to_unicode_tree, &win1251_from_unicode_tree},
71 {PG_WIN1252, &win1252_to_unicode_tree, &win1252_from_unicode_tree},
72 {PG_WIN1253, &win1253_to_unicode_tree, &win1253_from_unicode_tree},
73 {PG_WIN1254, &win1254_to_unicode_tree, &win1254_from_unicode_tree},
74 {PG_WIN1255, &win1255_to_unicode_tree, &win1255_from_unicode_tree},
75 {PG_WIN1256, &win1256_to_unicode_tree, &win1256_from_unicode_tree},
76 {PG_WIN1257, &win1257_to_unicode_tree, &win1257_from_unicode_tree},
77 {PG_WIN1258, &win1258_to_unicode_tree, &win1258_from_unicode_tree},
78};
79
82{
84 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
85 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
86 int len = PG_GETARG_INT32(4);
87 bool noError = PG_GETARG_BOOL(5);
88 int i;
89
91
92 for (i = 0; i < lengthof(maps); i++)
93 {
94 if (encoding == maps[i].encoding)
95 {
96 int converted;
97
98 converted = LocalToUtf(src, len, dest,
99 maps[i].map1,
100 NULL, 0,
101 NULL,
102 encoding,
103 noError);
104 PG_RETURN_INT32(converted);
105 }
106 }
107
109 (errcode(ERRCODE_INTERNAL_ERROR),
110 errmsg("unexpected encoding ID %d for WIN character sets",
111 encoding)));
112
114}
115
116Datum
118{
119 int encoding = PG_GETARG_INT32(1);
120 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
121 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
122 int len = PG_GETARG_INT32(4);
123 bool noError = PG_GETARG_BOOL(5);
124 int i;
125
127
128 for (i = 0; i < lengthof(maps); i++)
129 {
130 if (encoding == maps[i].encoding)
131 {
132 int converted;
133
134 converted = UtfToLocal(src, len, dest,
135 maps[i].map2,
136 NULL, 0,
137 NULL,
138 encoding,
139 noError);
140 PG_RETURN_INT32(converted);
141 }
142 }
143
145 (errcode(ERRCODE_INTERNAL_ERROR),
146 errmsg("unexpected encoding ID %d for WIN character sets",
147 encoding)));
148
150}
#define lengthof(array)
Definition: c.h:745
int UtfToLocal(const unsigned char *utf, int len, unsigned char *iso, const pg_mb_radix_tree *map, const pg_utf_to_local_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
Definition: conv.c:507
int LocalToUtf(const unsigned char *iso, int len, unsigned char *utf, const pg_mb_radix_tree *map, const pg_local_to_utf_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
Definition: conv.c:717
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:149
#define PG_GETARG_CSTRING(n)
Definition: fmgr.h:277
#define PG_RETURN_INT32(x)
Definition: fmgr.h:354
#define PG_GETARG_INT32(n)
Definition: fmgr.h:269
#define PG_GETARG_BOOL(n)
Definition: fmgr.h:274
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
int i
Definition: isn.c:72
const void size_t len
int32 encoding
Definition: pg_database.h:41
pg_enc
Definition: pg_wchar.h:225
@ PG_WIN1254
Definition: pg_wchar.h:257
@ PG_WIN1253
Definition: pg_wchar.h:256
@ PG_WIN1250
Definition: pg_wchar.h:255
@ PG_WIN1256
Definition: pg_wchar.h:244
@ PG_WIN1258
Definition: pg_wchar.h:245
@ PG_WIN1252
Definition: pg_wchar.h:250
@ PG_UTF8
Definition: pg_wchar.h:232
@ PG_WIN1255
Definition: pg_wchar.h:258
@ PG_WIN1257
Definition: pg_wchar.h:259
@ PG_WIN1251
Definition: pg_wchar.h:249
@ PG_WIN866
Definition: pg_wchar.h:246
@ PG_WIN874
Definition: pg_wchar.h:247
#define CHECK_ENCODING_CONVERSION_ARGS(srcencoding, destencoding)
Definition: pg_wchar.h:507
uintptr_t Datum
Definition: postgres.h:69
Datum utf8_to_win(PG_FUNCTION_ARGS)
Definition: utf8_and_win.c:117
PG_MODULE_MAGIC
Definition: utf8_and_win.c:40
static const pg_conv_map maps[]
Definition: utf8_and_win.c:66
PG_FUNCTION_INFO_V1(win_to_utf8)
Datum win_to_utf8(PG_FUNCTION_ARGS)
Definition: utf8_and_win.c:81