Age Owner TLA Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * UHC <--> 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_uhc/utf8_and_uhc.c
10 : *
11 : *-------------------------------------------------------------------------
12 : */
13 :
14 : #include "postgres.h"
15 : #include "fmgr.h"
16 : #include "mb/pg_wchar.h"
17 : #include "../../Unicode/uhc_to_utf8.map"
18 : #include "../../Unicode/utf8_to_uhc.map"
19 :
166 tgl@sss.pgh.pa.us 20 CBC 3 : PG_MODULE_MAGIC_EXT(
21 : .name = "utf8_and_uhc",
22 : .version = PG_VERSION
23 : );
24 :
8353 25 3 : PG_FUNCTION_INFO_V1(uhc_to_utf8);
26 3 : PG_FUNCTION_INFO_V1(utf8_to_uhc);
27 :
28 : /* ----------
29 : * conv_proc(
30 : * INTEGER, -- source encoding id
31 : * INTEGER, -- destination encoding id
32 : * CSTRING, -- source string (null terminated C string)
33 : * CSTRING, -- destination string (null terminated C string)
34 : * INTEGER, -- source string length
35 : * BOOL -- if true, don't throw an error if conversion fails
36 : * ) returns INTEGER;
37 : *
38 : * Returns the number of bytes successfully converted.
39 : * ----------
40 : */
41 : Datum
8455 ishii@postgresql.org 42 3 : uhc_to_utf8(PG_FUNCTION_ARGS)
43 : {
7289 tgl@sss.pgh.pa.us 44 3 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
45 3 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
8405 bruce@momjian.us 46 3 : int len = PG_GETARG_INT32(4);
1621 heikki.linnakangas@i 47 3 : bool noError = PG_GETARG_BOOL(5);
48 : int converted;
49 :
6066 tgl@sss.pgh.pa.us 50 3 : CHECK_ENCODING_CONVERSION_ARGS(PG_UHC, PG_UTF8);
51 :
1621 heikki.linnakangas@i 52 3 : converted = LocalToUtf(src, len, dest,
53 : &uhc_to_unicode_tree,
54 : NULL, 0,
55 : NULL,
56 : PG_UHC,
57 : noError);
58 :
59 3 : PG_RETURN_INT32(converted);
60 : }
61 :
62 : Datum
8455 ishii@postgresql.org 63 3 : utf8_to_uhc(PG_FUNCTION_ARGS)
64 : {
7289 tgl@sss.pgh.pa.us 65 3 : unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
66 3 : unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
8405 bruce@momjian.us 67 3 : int len = PG_GETARG_INT32(4);
1621 heikki.linnakangas@i 68 3 : bool noError = PG_GETARG_BOOL(5);
69 : int converted;
70 :
6066 tgl@sss.pgh.pa.us 71 3 : CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_UHC);
72 :
1621 heikki.linnakangas@i 73 3 : converted = UtfToLocal(src, len, dest,
74 : &uhc_from_unicode_tree,
75 : NULL, 0,
76 : NULL,
77 : PG_UHC,
78 : noError);
79 :
80 3 : PG_RETURN_INT32(converted);
81 : }
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