Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * LATIN2 and WIN1250
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/latin2_and_win1250/latin2_and_win1250.c
10 : *
11 : *-------------------------------------------------------------------------
12 : */
13 :
14 : #include "postgres.h"
15 : #include "fmgr.h"
16 : #include "mb/pg_wchar.h"
17 :
18 6 : PG_MODULE_MAGIC_EXT(
19 : .name = "latin2_and_win1250",
20 : .version = PG_VERSION
21 : );
22 :
23 6 : PG_FUNCTION_INFO_V1(latin2_to_mic);
24 6 : PG_FUNCTION_INFO_V1(mic_to_latin2);
25 6 : PG_FUNCTION_INFO_V1(win1250_to_mic);
26 6 : PG_FUNCTION_INFO_V1(mic_to_win1250);
27 6 : PG_FUNCTION_INFO_V1(latin2_to_win1250);
28 6 : PG_FUNCTION_INFO_V1(win1250_to_latin2);
29 :
30 : /* ----------
31 : * conv_proc(
32 : * INTEGER, -- source encoding id
33 : * INTEGER, -- destination encoding id
34 : * CSTRING, -- source string (null terminated C string)
35 : * CSTRING, -- destination string (null terminated C string)
36 : * INTEGER, -- source string length
37 : * BOOL -- if true, don't throw an error if conversion fails
38 : * ) returns INTEGER;
39 : *
40 : * Returns the number of bytes successfully converted.
41 : * ----------
42 : */
43 :
44 : /* WIN1250 to ISO-8859-2 */
45 : static const unsigned char win1250_2_iso88592[] = {
46 : 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
47 : 0x88, 0x89, 0xA9, 0x8B, 0xA6, 0xAB, 0xAE, 0xAC,
48 : 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
49 : 0x98, 0x99, 0xB9, 0x9B, 0xB6, 0xBB, 0xBE, 0xBC,
50 : 0xA0, 0xB7, 0xA2, 0xA3, 0xA4, 0xA1, 0x00, 0xA7,
51 : 0xA8, 0x00, 0xAA, 0x00, 0x00, 0xAD, 0x00, 0xAF,
52 : 0xB0, 0x00, 0xB2, 0xB3, 0xB4, 0x00, 0x00, 0x00,
53 : 0xB8, 0xB1, 0xBA, 0x00, 0xA5, 0xBD, 0xB5, 0xBF,
54 : 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
55 : 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
56 : 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
57 : 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
58 : 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
59 : 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
60 : 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
61 : 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
62 : };
63 :
64 : /* ISO-8859-2 to WIN1250 */
65 : static const unsigned char iso88592_2_win1250[] = {
66 : 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
67 : 0x88, 0x89, 0x00, 0x8B, 0x00, 0x00, 0x00, 0x00,
68 : 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
69 : 0x98, 0x99, 0x00, 0x9B, 0x00, 0x00, 0x00, 0x00,
70 : 0xA0, 0xA5, 0xA2, 0xA3, 0xA4, 0xBC, 0x8C, 0xA7,
71 : 0xA8, 0x8A, 0xAA, 0x8D, 0x8F, 0xAD, 0x8E, 0xAF,
72 : 0xB0, 0xB9, 0xB2, 0xB3, 0xB4, 0xBE, 0x9C, 0xA1,
73 : 0xB8, 0x9A, 0xBA, 0x9D, 0x9F, 0xBD, 0x9E, 0xBF,
74 : 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
75 : 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
76 : 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
77 : 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
78 : 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
79 : 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
80 : 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
81 : 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
82 : };
83 :
84 :
85 : Datum
86 6 : latin2_to_mic(PG_FUNCTION_ARGS)
87 : {
88 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
89 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
90 6 : int len = PG_GETARG_INT32(4);
91 6 : bool noError = PG_GETARG_BOOL(5);
92 : int converted;
93 :
94 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_LATIN2, PG_MULE_INTERNAL);
95 :
96 6 : converted = latin2mic(src, dest, len, LC_ISO8859_2, PG_LATIN2, noError);
97 :
98 6 : PG_RETURN_INT32(converted);
99 : }
100 :
101 : Datum
102 6 : mic_to_latin2(PG_FUNCTION_ARGS)
103 : {
104 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
105 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
106 6 : int len = PG_GETARG_INT32(4);
107 6 : bool noError = PG_GETARG_BOOL(5);
108 : int converted;
109 :
110 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_MULE_INTERNAL, PG_LATIN2);
111 :
112 6 : converted = mic2latin(src, dest, len, LC_ISO8859_2, PG_LATIN2, noError);
113 :
114 6 : PG_RETURN_INT32(converted);
115 : }
116 :
117 : Datum
118 6 : win1250_to_mic(PG_FUNCTION_ARGS)
119 : {
120 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
121 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
122 6 : int len = PG_GETARG_INT32(4);
123 6 : bool noError = PG_GETARG_BOOL(5);
124 : int converted;
125 :
126 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_WIN1250, PG_MULE_INTERNAL);
127 :
128 6 : converted = latin2mic_with_table(src, dest, len, LC_ISO8859_2, PG_WIN1250,
129 : win1250_2_iso88592, noError);
130 :
131 6 : PG_RETURN_INT32(converted);
132 : }
133 :
134 : Datum
135 6 : mic_to_win1250(PG_FUNCTION_ARGS)
136 : {
137 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
138 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
139 6 : int len = PG_GETARG_INT32(4);
140 6 : bool noError = PG_GETARG_BOOL(5);
141 : int converted;
142 :
143 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_MULE_INTERNAL, PG_WIN1250);
144 :
145 6 : converted = mic2latin_with_table(src, dest, len, LC_ISO8859_2, PG_WIN1250,
146 : iso88592_2_win1250, noError);
147 :
148 6 : PG_RETURN_INT32(converted);
149 : }
150 :
151 : Datum
152 6 : latin2_to_win1250(PG_FUNCTION_ARGS)
153 : {
154 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
155 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
156 6 : int len = PG_GETARG_INT32(4);
157 6 : bool noError = PG_GETARG_BOOL(5);
158 : int converted;
159 :
160 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_LATIN2, PG_WIN1250);
161 :
162 6 : converted = local2local(src, dest, len, PG_LATIN2, PG_WIN1250,
163 : iso88592_2_win1250, noError);
164 :
165 6 : PG_RETURN_INT32(converted);
166 : }
167 :
168 : Datum
169 6 : win1250_to_latin2(PG_FUNCTION_ARGS)
170 : {
171 6 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
172 6 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
173 6 : int len = PG_GETARG_INT32(4);
174 6 : bool noError = PG_GETARG_BOOL(5);
175 : int converted;
176 :
177 6 : CHECK_ENCODING_CONVERSION_ARGS(PG_WIN1250, PG_LATIN2);
178 :
179 6 : converted = local2local(src, dest, len, PG_WIN1250, PG_LATIN2,
180 : win1250_2_iso88592, noError);
181 :
182 6 : PG_RETURN_INT32(converted);
183 : }
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