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体验新版 GitCode,发现更多精彩内容 >>
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e3f5bc34
编写于
9月 21, 2001
作者:
T
Tom Lane
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Fix type_maximum_size() to give the right answer in MULTIBYTE cases.
Avoid use of prototype-less function pointers in MB code.
上级
39dc8ff6
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
76 addition
and
38 deletion
+76
-38
src/backend/utils/adt/format_type.c
src/backend/utils/adt/format_type.c
+15
-4
src/backend/utils/mb/mbutils.c
src/backend/utils/mb/mbutils.c
+19
-13
src/backend/utils/mb/wchar.c
src/backend/utils/mb/wchar.c
+18
-7
src/include/mb/pg_wchar.h
src/include/mb/pg_wchar.h
+24
-14
未找到文件。
src/backend/utils/adt/format_type.c
浏览文件 @
e3f5bc34
...
...
@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/format_type.c,v 1.1
4 2001/08/09 18:28:18 petere
Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/format_type.c,v 1.1
5 2001/09/21 15:27:38 tgl
Exp $
*
*-------------------------------------------------------------------------
*/
...
...
@@ -22,6 +22,10 @@
#include "utils/builtins.h"
#include "utils/numeric.h"
#include "utils/syscache.h"
#ifdef MULTIBYTE
#include "mb/pg_wchar.h"
#endif
#define MAX_INT32_LEN 11
#define _textin(str) DirectFunctionCall1(textin, CStringGetDatum(str))
...
...
@@ -249,9 +253,9 @@ format_type_internal(Oid type_oid, int32 typemod, bool allow_invalid)
/*
* type_maximum_size --- determine maximum
leng
th of a varlena column
* type_maximum_size --- determine maximum
wid
th of a varlena column
*
* If the max
leng
th is indeterminate, return -1. In particular, we return
* If the max
wid
th is indeterminate, return -1. In particular, we return
* -1 for any type not known to this routine. We assume the caller has
* already determined that the type is a varlena type, so it's not
* necessary to look up the type's pg_type tuple here.
...
...
@@ -271,7 +275,14 @@ type_maximum_size(Oid type_oid, int32 typemod)
case
BPCHAROID
:
case
VARCHAROID
:
/* typemod includes varlena header */
#ifdef MULTIBYTE
/* typemod is in characters not bytes */
return
(
typemod
-
VARHDRSZ
)
*
pg_encoding_max_length
(
GetDatabaseEncoding
())
+
VARHDRSZ
;
#else
return
typemod
;
#endif
case
NUMERICOID
:
/* precision (ie, max # of digits) is in upper bits of typmod */
...
...
@@ -291,7 +302,7 @@ type_maximum_size(Oid type_oid, int32 typemod)
+
2
*
sizeof
(
int32
);
}
/* Unknown type, or unlimited-
leng
th type such as 'text' */
/* Unknown type, or unlimited-
wid
th type such as 'text' */
return
-
1
;
}
...
...
src/backend/utils/mb/mbutils.c
浏览文件 @
e3f5bc34
...
...
@@ -3,7 +3,7 @@
* client encoding and server internal encoding.
* (currently mule internal code (mic) is used)
* Tatsuo Ishii
* $Id: mbutils.c,v 1.2
2 2001/09/09 01:15:11 ishii
Exp $
* $Id: mbutils.c,v 1.2
3 2001/09/21 15:27:38 tgl
Exp $
*/
#include "postgres.h"
...
...
@@ -24,10 +24,10 @@
static
pg_enc2name
*
ClientEncoding
=
&
pg_enc2name_tbl
[
PG_SQL_ASCII
];
static
pg_enc2name
*
DatabaseEncoding
=
&
pg_enc2name_tbl
[
PG_SQL_ASCII
];
static
void
(
*
client_to_mic
)
()
;
/* something to MIC */
static
void
(
*
client_from_mic
)
()
;
/* MIC to something */
static
void
(
*
server_to_mic
)
()
;
/* something to MIC */
static
void
(
*
server_from_mic
)
()
;
/* MIC to something */
static
to_mic_converter
client_to_mic
;
/* something to MIC */
static
from_mic_converter
client_from_mic
;
/* MIC to something */
static
to_mic_converter
server_to_mic
;
/* something to MIC */
static
from_mic_converter
server_from_mic
;
/* MIC to something */
/*
* find encoding table entry by encoding
...
...
@@ -60,7 +60,9 @@ pg_get_enconv_by_encoding(int encoding)
* appropriate function found, set to 0.
*/
int
pg_find_encoding_converters
(
int
src
,
int
dest
,
void
(
**
src_to_mic
)(),
void
(
**
dest_from_mic
)())
pg_find_encoding_converters
(
int
src
,
int
dest
,
to_mic_converter
*
src_to_mic
,
from_mic_converter
*
dest_from_mic
)
{
if
(
src
==
dest
)
{
/* src == dest? */
...
...
@@ -132,7 +134,7 @@ pg_set_client_encoding(int encoding)
* returns the current client encoding
*/
int
pg_get_client_encoding
()
pg_get_client_encoding
(
void
)
{
Assert
(
ClientEncoding
);
return
(
ClientEncoding
->
encoding
);
...
...
@@ -142,7 +144,7 @@ pg_get_client_encoding()
* returns the current client encoding name
*/
const
char
*
pg_get_client_encoding_name
()
pg_get_client_encoding_name
(
void
)
{
Assert
(
ClientEncoding
);
return
(
ClientEncoding
->
name
);
...
...
@@ -176,7 +178,9 @@ pg_get_client_encoding_name()
* in the length of the string --- is this enough? */
unsigned
char
*
pg_do_encoding_conversion
(
unsigned
char
*
src
,
int
len
,
void
(
*
src_to_mic
)(),
void
(
*
dest_from_mic
)())
pg_do_encoding_conversion
(
unsigned
char
*
src
,
int
len
,
to_mic_converter
src_to_mic
,
from_mic_converter
dest_from_mic
)
{
unsigned
char
*
result
=
src
;
unsigned
char
*
buf
;
...
...
@@ -212,7 +216,8 @@ pg_convert(PG_FUNCTION_ARGS)
Name
s
=
PG_GETARG_NAME
(
1
);
int
encoding
=
pg_char_to_encoding
(
NameStr
(
*
s
));
int
db_encoding
=
DatabaseEncoding
->
encoding
;
void
(
*
src
)(),
(
*
dest
)();
to_mic_converter
src
;
from_mic_converter
dest
;
unsigned
char
*
result
;
text
*
retval
;
...
...
@@ -253,7 +258,8 @@ pg_convert2(PG_FUNCTION_ARGS)
int
src_encoding
=
pg_char_to_encoding
(
src_encoding_name
);
char
*
dest_encoding_name
=
NameStr
(
*
PG_GETARG_NAME
(
2
));
int
dest_encoding
=
pg_char_to_encoding
(
dest_encoding_name
);
void
(
*
src
)(),
(
*
dest
)();
to_mic_converter
src
;
from_mic_converter
dest
;
unsigned
char
*
result
;
text
*
retval
;
...
...
@@ -446,14 +452,14 @@ SetDatabaseEncoding(int encoding)
}
int
GetDatabaseEncoding
()
GetDatabaseEncoding
(
void
)
{
Assert
(
DatabaseEncoding
);
return
(
DatabaseEncoding
->
encoding
);
}
const
char
*
GetDatabaseEncodingName
()
GetDatabaseEncodingName
(
void
)
{
Assert
(
DatabaseEncoding
);
return
(
DatabaseEncoding
->
name
);
...
...
src/backend/utils/mb/wchar.c
浏览文件 @
e3f5bc34
/*
* conversion functions between pg_wchar and multi-byte streams.
* Tatsuo Ishii
* $Id: wchar.c,v 1.2
0 2001/09/11 04:50:36 ishii
Exp $
* $Id: wchar.c,v 1.2
1 2001/09/21 15:27:38 tgl
Exp $
*
* WIN1250 client encoding updated by Pavel Behal
*
*/
/* can be used in either frontend or backend */
#include "postgres_fe.h"
#include "mb/pg_wchar.h"
#ifdef FRONTEND
#define Assert(condition)
#include "postgres_fe.h"
#define Assert(condition)
#else
#include "postgres.h"
#include "postgres.h"
#endif
#include "mb/pg_wchar.h"
/*
* conversion to pg_wchar is done by "table driven."
...
...
@@ -499,6 +499,17 @@ pg_encoding_mblen(int encoding, const unsigned char *mbstr)
((
*
pg_wchar_table
[
PG_SQL_ASCII
].
mblen
)
(
mbstr
)));
}
/*
* fetch maximum length of a char encoding
*/
int
pg_encoding_max_length
(
int
encoding
)
{
Assert
(
PG_VALID_ENCODING
(
encoding
));
return
pg_wchar_table
[
encoding
].
maxmblen
;
}
#ifndef FRONTEND
/*
* Verify mbstr to make sure that it has a valid character sequence.
...
...
@@ -517,7 +528,7 @@ pg_verifymbstr(const unsigned char *mbstr, int len)
int
slen
=
0
;
/* we do not check single byte encodings */
if
(
pg_
wchar_table
[
GetDatabaseEncoding
()].
maxmblen
<=
1
)
if
(
pg_
encoding_max_length
(
GetDatabaseEncoding
())
<=
1
)
return
NULL
;
while
(
len
>
0
&&
*
mbstr
)
...
...
src/include/mb/pg_wchar.h
浏览文件 @
e3f5bc34
/* $Id: pg_wchar.h,v 1.3
0 2001/09/11 04:50:36 ishii
Exp $ */
/* $Id: pg_wchar.h,v 1.3
1 2001/09/21 15:27:38 tgl
Exp $ */
#ifndef PG_WCHAR_H
#define PG_WCHAR_H
...
...
@@ -17,7 +17,6 @@
*/
#ifdef MULTIBYTE
typedef
unsigned
int
pg_wchar
;
#else
#define pg_wchar char
#endif
...
...
@@ -152,6 +151,9 @@ extern pg_encname *pg_char_to_encname_struct(const char *name);
extern
int
pg_char_to_encoding
(
const
char
*
s
);
extern
const
char
*
pg_encoding_to_char
(
int
encoding
);
typedef
void
(
*
to_mic_converter
)
(
unsigned
char
*
l
,
unsigned
char
*
p
,
int
len
);
typedef
void
(
*
from_mic_converter
)
(
unsigned
char
*
mic
,
unsigned
char
*
p
,
int
len
);
/*
* The backend encoding conversion routines
* Careful:
...
...
@@ -162,11 +164,11 @@ extern const char *pg_encoding_to_char(int encoding);
#ifndef FRONTEND
typedef
struct
pg_enconv
{
pg_enc
encoding
;
/* encoding identificato
r */
void
(
*
to_mic
)
();
/* client encoding to MIC */
void
(
*
from_mic
)
();
/* MIC to client encoding */
void
(
*
to_unicode
)
();
/* client encoding to UTF-8 */
void
(
*
from_unicode
)
();
/* UTF-8 to client encoding */
pg_enc
encoding
;
/* encoding identifie
r */
to_mic_converter
to_mic
;
/* client encoding to MIC */
from_mic_converter
from_mic
;
/* MIC to client encoding */
to_mic_converter
to_unicode
;
/* client encoding to UTF-8 */
from_mic_converter
from_unicode
;
/* UTF-8 to client encoding */
}
pg_enconv
;
extern
pg_enconv
pg_enconv_tbl
[];
...
...
@@ -177,13 +179,16 @@ extern pg_enconv *pg_get_enconv_by_encoding(int encoding);
/*
* pg_wchar stuff
*/
typedef
int
(
*
mb2wchar_with_len_converter
)
(
const
unsigned
char
*
from
,
pg_wchar
*
to
,
int
len
);
typedef
int
(
*
mblen_converter
)
(
const
unsigned
char
*
mbstr
);
typedef
struct
{
int
(
*
mb2wchar_with_len
)
();
/* convert a multi-byte
* string to a wchar */
int
(
*
mblen
)
();
/* returns the length of a multi-byte word */
int
maxmblen
;
/* max bytes for a letter in this charset */
mb2wchar_with_len_converter
mb2wchar_with_len
;
/* convert a multi-byte string to a wchar */
mblen_converter
mblen
;
/* returns the length of a multi-byte char */
int
maxmblen
;
/* max bytes for a char in this charset */
}
pg_wchar_tbl
;
extern
pg_wchar_tbl
pg_wchar_table
[];
...
...
@@ -220,6 +225,7 @@ extern int pg_mbstrlen(const unsigned char *);
extern
int
pg_mbstrlen_with_len
(
const
unsigned
char
*
,
int
);
extern
int
pg_mbcliplen
(
const
unsigned
char
*
,
int
,
int
);
extern
int
pg_mbcharcliplen
(
const
unsigned
char
*
,
int
,
int
);
extern
int
pg_encoding_max_length
(
int
);
extern
int
pg_set_client_encoding
(
int
);
extern
int
pg_get_client_encoding
(
void
);
...
...
@@ -233,8 +239,12 @@ extern int pg_valid_client_encoding(const char *name);
extern
int
pg_valid_server_encoding
(
const
char
*
name
);
extern
int
pg_utf_mblen
(
const
unsigned
char
*
);
extern
int
pg_find_encoding_converters
(
int
,
int
,
void
(
**
)(),
void
(
**
)());
extern
unsigned
char
*
pg_do_encoding_conversion
(
unsigned
char
*
,
int
,
void
(
*
)(),
void
(
*
)());
extern
int
pg_find_encoding_converters
(
int
src
,
int
dest
,
to_mic_converter
*
src_to_mic
,
from_mic_converter
*
dest_from_mic
);
extern
unsigned
char
*
pg_do_encoding_conversion
(
unsigned
char
*
src
,
int
len
,
to_mic_converter
src_to_mic
,
from_mic_converter
dest_from_mic
);
extern
unsigned
char
*
pg_client_to_server
(
unsigned
char
*
,
int
);
extern
unsigned
char
*
pg_server_to_client
(
unsigned
char
*
,
int
);
...
...
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