Age Owner TLA Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * LATIN2 and WIN1250
4 : *
5 : * Portions Copyright (c) 1996-2026, 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 :
405 tgl@sss.pgh.pa.us 18 CBC 4 : PG_MODULE_MAGIC_EXT(
19 : .name = "latin2_and_win1250",
20 : .version = PG_VERSION
21 : );
22 :
8592 23 4 : PG_FUNCTION_INFO_V1(latin2_to_win1250);
24 4 : PG_FUNCTION_INFO_V1(win1250_to_latin2);
25 :
26 : /* ----------
27 : * conv_proc(
28 : * INTEGER, -- source encoding id
29 : * INTEGER, -- destination encoding id
30 : * CSTRING, -- source string (null terminated C string)
31 : * CSTRING, -- destination string (null terminated C string)
32 : * INTEGER, -- source string length
33 : * BOOL -- if true, don't throw an error if conversion fails
34 : * ) returns INTEGER;
35 : *
36 : * Returns the number of bytes successfully converted.
37 : * ----------
38 : */
39 :
40 : /* WIN1250 to ISO-8859-2 */
41 : static const unsigned char win1250_2_iso88592[] = {
42 : 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
43 : 0x88, 0x89, 0xA9, 0x8B, 0xA6, 0xAB, 0xAE, 0xAC,
44 : 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
45 : 0x98, 0x99, 0xB9, 0x9B, 0xB6, 0xBB, 0xBE, 0xBC,
46 : 0xA0, 0xB7, 0xA2, 0xA3, 0xA4, 0xA1, 0x00, 0xA7,
47 : 0xA8, 0x00, 0xAA, 0x00, 0x00, 0xAD, 0x00, 0xAF,
48 : 0xB0, 0x00, 0xB2, 0xB3, 0xB4, 0x00, 0x00, 0x00,
49 : 0xB8, 0xB1, 0xBA, 0x00, 0xA5, 0xBD, 0xB5, 0xBF,
50 : 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
51 : 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
52 : 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
53 : 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
54 : 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
55 : 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
56 : 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
57 : 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
58 : };
59 :
60 : /* ISO-8859-2 to WIN1250 */
61 : static const unsigned char iso88592_2_win1250[] = {
62 : 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
63 : 0x88, 0x89, 0x00, 0x8B, 0x00, 0x00, 0x00, 0x00,
64 : 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
65 : 0x98, 0x99, 0x00, 0x9B, 0x00, 0x00, 0x00, 0x00,
66 : 0xA0, 0xA5, 0xA2, 0xA3, 0xA4, 0xBC, 0x8C, 0xA7,
67 : 0xA8, 0x8A, 0xAA, 0x8D, 0x8F, 0xAD, 0x8E, 0xAF,
68 : 0xB0, 0xB9, 0xB2, 0xB3, 0xB4, 0xBE, 0x9C, 0xA1,
69 : 0xB8, 0x9A, 0xBA, 0x9D, 0x9F, 0xBD, 0x9E, 0xBF,
70 : 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
71 : 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
72 : 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
73 : 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
74 : 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
75 : 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
76 : 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
77 : 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
78 : };
79 :
80 :
81 : Datum
8665 ishii@postgresql.org 82 4 : latin2_to_win1250(PG_FUNCTION_ARGS)
83 : {
7528 tgl@sss.pgh.pa.us 84 4 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
85 4 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
8644 bruce@momjian.us 86 4 : int len = PG_GETARG_INT32(4);
1860 heikki.linnakangas@i 87 4 : bool noError = PG_GETARG_BOOL(5);
88 : int converted;
89 :
6305 tgl@sss.pgh.pa.us 90 4 : CHECK_ENCODING_CONVERSION_ARGS(PG_LATIN2, PG_WIN1250);
91 :
1860 heikki.linnakangas@i 92 4 : converted = local2local(src, dest, len, PG_LATIN2, PG_WIN1250,
93 : iso88592_2_win1250, noError);
94 :
95 4 : PG_RETURN_INT32(converted);
96 : }
97 :
98 : Datum
8665 ishii@postgresql.org 99 4 : win1250_to_latin2(PG_FUNCTION_ARGS)
100 : {
7528 tgl@sss.pgh.pa.us 101 4 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
102 4 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
8644 bruce@momjian.us 103 4 : int len = PG_GETARG_INT32(4);
1860 heikki.linnakangas@i 104 4 : bool noError = PG_GETARG_BOOL(5);
105 : int converted;
106 :
6305 tgl@sss.pgh.pa.us 107 4 : CHECK_ENCODING_CONVERSION_ARGS(PG_WIN1250, PG_LATIN2);
108 :
1860 heikki.linnakangas@i 109 4 : converted = local2local(src, dest, len, PG_WIN1250, PG_LATIN2,
110 : win1250_2_iso88592, noError);
111 :
112 4 : PG_RETURN_INT32(converted);
113 : }
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