Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * WIN <--> UTF8
4 : *
5 : * Portions Copyright (c) 1996-2017, 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 :
40 4 : PG_MODULE_MAGIC;
41 :
42 46 : PG_FUNCTION_INFO_V1(win_to_utf8);
43 46 : PG_FUNCTION_INFO_V1(utf8_to_win);
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 : * ) returns VOID;
53 : * ----------
54 : */
55 :
56 : typedef struct
57 : {
58 : pg_enc encoding;
59 : const pg_mb_radix_tree *map1; /* to UTF8 map name */
60 : const pg_mb_radix_tree *map2; /* from UTF8 map name */
61 : } pg_conv_map;
62 :
63 : static const pg_conv_map maps[] = {
64 : {PG_WIN866, &win866_to_unicode_tree, &win866_from_unicode_tree},
65 : {PG_WIN874, &win874_to_unicode_tree, &win874_from_unicode_tree},
66 : {PG_WIN1250, &win1250_to_unicode_tree, &win1250_from_unicode_tree},
67 : {PG_WIN1251, &win1251_to_unicode_tree, &win1251_from_unicode_tree},
68 : {PG_WIN1252, &win1252_to_unicode_tree, &win1252_from_unicode_tree},
69 : {PG_WIN1253, &win1253_to_unicode_tree, &win1253_from_unicode_tree},
70 : {PG_WIN1254, &win1254_to_unicode_tree, &win1254_from_unicode_tree},
71 : {PG_WIN1255, &win1255_to_unicode_tree, &win1255_from_unicode_tree},
72 : {PG_WIN1256, &win1256_to_unicode_tree, &win1256_from_unicode_tree},
73 : {PG_WIN1257, &win1257_to_unicode_tree, &win1257_from_unicode_tree},
74 : {PG_WIN1258, &win1258_to_unicode_tree, &win1258_from_unicode_tree},
75 : };
76 :
77 : Datum
78 44 : win_to_utf8(PG_FUNCTION_ARGS)
79 : {
80 44 : int encoding = PG_GETARG_INT32(0);
81 44 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
82 44 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
83 44 : int len = PG_GETARG_INT32(4);
84 : int i;
85 :
86 44 : CHECK_ENCODING_CONVERSION_ARGS(-1, PG_UTF8);
87 :
88 264 : for (i = 0; i < lengthof(maps); i++)
89 : {
90 264 : if (encoding == maps[i].encoding)
91 : {
92 44 : LocalToUtf(src, len, dest,
93 : maps[i].map1,
94 : NULL, 0,
95 : NULL,
96 : encoding);
97 44 : PG_RETURN_VOID();
98 : }
99 : }
100 :
101 0 : ereport(ERROR,
102 : (errcode(ERRCODE_INTERNAL_ERROR),
103 : errmsg("unexpected encoding ID %d for WIN character sets",
104 : encoding)));
105 :
106 : PG_RETURN_VOID();
107 : }
108 :
109 : Datum
110 44 : utf8_to_win(PG_FUNCTION_ARGS)
111 : {
112 44 : int encoding = PG_GETARG_INT32(1);
113 44 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
114 44 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
115 44 : int len = PG_GETARG_INT32(4);
116 : int i;
117 :
118 44 : CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, -1);
119 :
120 264 : for (i = 0; i < lengthof(maps); i++)
121 : {
122 264 : if (encoding == maps[i].encoding)
123 : {
124 44 : UtfToLocal(src, len, dest,
125 : maps[i].map2,
126 : NULL, 0,
127 : NULL,
128 : encoding);
129 44 : PG_RETURN_VOID();
130 : }
131 : }
132 :
133 0 : ereport(ERROR,
134 : (errcode(ERRCODE_INTERNAL_ERROR),
135 : errmsg("unexpected encoding ID %d for WIN character sets",
136 : encoding)));
137 :
138 : PG_RETURN_VOID();
139 : }
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