blob: 1b3fe5fcf94364311ea450140baf78e9773c34b3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* This file contains some public functions
* usable for both the backend and the frontend.
* Tatsuo Ishii
* $Id: common.c,v 1.12 2001/02/11 01:59:22 ishii Exp $
*/
#include "postgres.h"
#ifdef WIN32
#include "win32.h"
#else
#include <unistd.h>
#endif
#include "miscadmin.h"
#include "mb/pg_wchar.h"
#include "utils/builtins.h"
#ifndef FRONTEND
/*
* convert encoding char to encoding symbol value.
* case is ignored.
* if there's no valid encoding, returns -1
*/
int
pg_char_to_encoding(const char *s)
{
pg_encoding_conv_tbl *p = pg_conv_tbl;
if (!s)
return (-1);
for (; p->encoding >= 0; p++)
{
if (!strcasecmp(s, p->name))
break;
}
return (p->encoding);
}
/* Same, as an fmgr-callable function */
Datum
PG_char_to_encoding(PG_FUNCTION_ARGS)
{
Name s = PG_GETARG_NAME(0);
PG_RETURN_INT32(pg_char_to_encoding(NameStr(*s)));
}
/*
* check to see if encoding name is valid
*/
int
pg_valid_client_encoding(const char *name)
{
return (pg_char_to_encoding(name));
}
/*
* find encoding table entry by encoding
*/
pg_encoding_conv_tbl *
pg_get_encent_by_encoding(int encoding)
{
pg_encoding_conv_tbl *p = pg_conv_tbl;
for (; p->encoding >= 0; p++)
{
if (p->encoding == encoding)
return (p);
}
return (0);
}
/*
* convert encoding symbol to encoding char.
* if there's no valid encoding symbol, returns ""
*/
const char *
pg_encoding_to_char(int encoding)
{
pg_encoding_conv_tbl *p = pg_get_encent_by_encoding(encoding);
if (!p)
return ("");
return (p->name);
}
/* Same, as an fmgr-callable function */
Datum
PG_encoding_to_char(PG_FUNCTION_ARGS)
{
int32 encoding = PG_GETARG_INT32(0);
PG_RETURN_NAME(pg_encoding_to_char(encoding));
}
#endif
|
