PostgreSQL Source Code  git master
utf8_and_cyrillic.c
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1 /*-------------------------------------------------------------------------
2  *
3  * UTF8 and Cyrillic
4  *
5  * Portions Copyright (c) 1996-2021, 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_cyrillic/utf8_and_cyrillic.c
10  *
11  *-------------------------------------------------------------------------
12  */
13 
14 #include "postgres.h"
15 #include "fmgr.h"
16 #include "mb/pg_wchar.h"
17 #include "../../Unicode/utf8_to_koi8r.map"
18 #include "../../Unicode/koi8r_to_utf8.map"
19 #include "../../Unicode/utf8_to_koi8u.map"
20 #include "../../Unicode/koi8u_to_utf8.map"
21 
23 
26 
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 Datum
46 {
47  unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
48  unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
49  int len = PG_GETARG_INT32(4);
50  bool noError = PG_GETARG_BOOL(5);
51  int converted;
52 
54 
55  converted = UtfToLocal(src, len, dest,
56  &koi8r_from_unicode_tree,
57  NULL, 0,
58  NULL,
59  PG_KOI8R,
60  noError);
61 
62  PG_RETURN_INT32(converted);
63 }
64 
65 Datum
67 {
68  unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
69  unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
70  int len = PG_GETARG_INT32(4);
71  bool noError = PG_GETARG_BOOL(5);
72  int converted;
73 
75 
76  converted = LocalToUtf(src, len, dest,
77  &koi8r_to_unicode_tree,
78  NULL, 0,
79  NULL,
80  PG_KOI8R,
81  noError);
82 
83  PG_RETURN_INT32(converted);
84 }
85 
86 Datum
88 {
89  unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
90  unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
91  int len = PG_GETARG_INT32(4);
92  bool noError = PG_GETARG_BOOL(5);
93  int converted;
94 
96 
97  converted = UtfToLocal(src, len, dest,
98  &koi8u_from_unicode_tree,
99  NULL, 0,
100  NULL,
101  PG_KOI8U,
102  noError);
103 
104  PG_RETURN_INT32(converted);
105 }
106 
107 Datum
109 {
110  unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
111  unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
112  int len = PG_GETARG_INT32(4);
113  bool noError = PG_GETARG_BOOL(5);
114  int converted;
115 
117 
118  converted = LocalToUtf(src, len, dest,
119  &koi8u_to_unicode_tree,
120  NULL, 0,
121  NULL,
122  PG_KOI8U,
123  noError);
124 
125  PG_RETURN_INT32(converted);
126 }
#define PG_GETARG_INT32(n)
Definition: fmgr.h:269
#define PG_RETURN_INT32(x)
Definition: fmgr.h:354
PG_MODULE_MAGIC
Datum koi8u_to_utf8(PG_FUNCTION_ARGS)
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
#define PG_GETARG_BOOL(n)
Definition: fmgr.h:274
Datum koi8r_to_utf8(PG_FUNCTION_ARGS)
uintptr_t Datum
Definition: postgres.h:411
Datum utf8_to_koi8r(PG_FUNCTION_ARGS)
PG_FUNCTION_INFO_V1(utf8_to_koi8r)
#define CHECK_ENCODING_CONVERSION_ARGS(srcencoding, destencoding)
Definition: pg_wchar.h:527
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
#define PG_GETARG_CSTRING(n)
Definition: fmgr.h:277
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
Datum utf8_to_koi8u(PG_FUNCTION_ARGS)