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Kirill Smelkov
mariadb
Commits
cb44682a
Commit
cb44682a
authored
Jun 22, 2005
by
petr@mysql.com
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Add a missing statement, add licensing info and correct coding style
parent
30a0ad3a
Changes
1
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1 changed file
with
70 additions
and
48 deletions
+70
-48
mysys/default_modify.c
mysys/default_modify.c
+70
-48
No files found.
mysys/default_modify.c
View file @
cb44682a
/* Copyright (C) 2005 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "my_global.h"
#include "mysys_priv.h"
#include "m_string.h"
#include <my_dir.h>
#define BUFF_SIZE 1024
#ifdef __WIN__
#define NEWLINE "\r\n"
#define NEWLINE_LEN 2
#else
#define NEWLINE "\n"
#define NEWLINE_LEN 1
#endif
static
char
*
add_option
(
char
*
dst
,
const
char
*
option_value
,
const
char
*
option
,
int
remove_option
);
/*
Add/remove option to the option file section.
...
...
@@ -15,6 +50,8 @@
into a buffer. Then we look for the option within this section and
change/remove it. In the end we get a buffer with modified version of the
file. Then we write it to the file, truncate it if needed and close it.
Note that there is a small time gap, when the file is incomplete,
and this theoretically might introduce a problem.
RETURN
0 - ok
...
...
@@ -22,24 +59,6 @@
2 - cannot open the file
*/
#include "my_global.h"
#include "mysys_priv.h"
#include "m_string.h"
#include <my_dir.h>
#define BUFF_SIZE 1024
#ifdef __WIN__
#define NEWLINE "\r\n"
#define NEWLINE_LEN 2
#else
#define NEWLINE "\n"
#define NEWLINE_LEN 1
#endif
static
char
*
add_option
(
char
*
dst
,
const
char
*
option_value
,
const
char
*
option
,
int
remove_option
);
int
modify_defaults_file
(
const
char
*
file_location
,
const
char
*
option
,
const
char
*
option_value
,
const
char
*
section_name
,
int
remove_option
)
...
...
@@ -47,7 +66,7 @@ int modify_defaults_file(const char *file_location, const char *option,
FILE
*
cnf_file
;
MY_STAT
file_stat
;
char
linebuff
[
BUFF_SIZE
],
*
src_ptr
,
*
dst_ptr
,
*
file_buffer
;
uint
optlen
,
optval_len
,
sect_len
,
nr_newlines
=
0
;
uint
opt
_
len
,
optval_len
,
sect_len
,
nr_newlines
=
0
;
my_bool
in_section
=
FALSE
,
opt_applied
=
0
;
DBUG_ENTER
(
"modify_defaults_file"
);
...
...
@@ -58,7 +77,7 @@ int modify_defaults_file(const char *file_location, const char *option,
if
(
my_fstat
(
fileno
(
cnf_file
),
&
file_stat
,
MYF
(
0
)))
goto
err
;
optlen
=
(
uint
)
strlen
(
option
);
opt
_
len
=
(
uint
)
strlen
(
option
);
optval_len
=
(
uint
)
strlen
(
option_value
);
/*
...
...
@@ -66,17 +85,18 @@ int modify_defaults_file(const char *file_location, const char *option,
for the option we want to add.
*/
if
(
!
(
file_buffer
=
(
char
*
)
my_malloc
(
sizeof
(
char
)
*
(
file_stat
.
st_size
+
/* option name len */
optlen
+
/* reserve space for newline */
NEWLINE_LEN
+
/* reserve for '=' char */
1
+
/* option value len */
optval_len
+
/* The ending zero plus some safety */
FN_REFLEN
),
MYF
(
MY_WME
))))
(
file_stat
.
st_size
+
/* option name len */
opt_len
+
/* reserve space for newline */
NEWLINE_LEN
+
/* reserve for '=' char */
1
+
/* option value len */
optval_len
+
/* The ending zero */
1
),
MYF
(
MY_WME
))))
goto
malloc_err
;
sect_len
=
(
uint
)
strlen
(
section_name
);
...
...
@@ -94,10 +114,11 @@ int modify_defaults_file(const char *file_location, const char *option,
continue
;
}
if
(
!
opt_applied
&&
in_section
&&
!
strncmp
(
src_ptr
,
option
,
optlen
)
&&
(
*
(
src_ptr
+
optlen
)
==
'='
||
my_isspace
(
&
my_charset_latin1
,
*
(
src_ptr
+
optlen
))
||
*
(
src_ptr
+
optlen
)
==
'\0'
))
/* correct the option */
if
(
!
opt_applied
&&
in_section
&&
!
strncmp
(
src_ptr
,
option
,
opt_len
)
&&
(
*
(
src_ptr
+
opt_len
)
==
'='
||
my_isspace
(
&
my_charset_latin1
,
*
(
src_ptr
+
opt_len
))
||
*
(
src_ptr
+
opt_len
)
==
'\0'
))
{
dst_ptr
=
add_option
(
dst_ptr
,
option_value
,
option
,
remove_option
);
opt_applied
=
1
;
...
...
@@ -107,11 +128,12 @@ int modify_defaults_file(const char *file_location, const char *option,
/* If going to new group and we have option to apply, do it now */
if
(
in_section
&&
!
opt_applied
&&
*
src_ptr
==
'['
)
{
dst_ptr
=
add_option
(
dst_ptr
,
option_value
,
option
,
remove_option
);
dst_ptr
=
add_option
(
dst_ptr
,
option_value
,
option
,
remove_option
);
opt_applied
=
1
;
/* set the flag to do write() later */
}
for
(;
nr_newlines
;
nr_newlines
--
)
dst_ptr
=
strmov
(
dst_ptr
,
NEWLINE
);
dst_ptr
=
strmov
(
dst_ptr
,
NEWLINE
);
dst_ptr
=
strmov
(
dst_ptr
,
linebuff
);
}
/* Look for a section */
...
...
@@ -120,13 +142,13 @@ int modify_defaults_file(const char *file_location, const char *option,
/* Copy the line to the buffer */
if
(
!
strncmp
(
++
src_ptr
,
section_name
,
sect_len
))
{
src_ptr
+=
sect_len
;
/* Skip over whitespaces. They are allowed after section name */
for
(;
my_isspace
(
&
my_charset_latin1
,
*
src_ptr
);
src_ptr
++
)
{}
src_ptr
+=
sect_len
;
/* Skip over whitespaces. They are allowed after section name */
for
(;
my_isspace
(
&
my_charset_latin1
,
*
src_ptr
);
src_ptr
++
)
{}
if
(
*
src_ptr
!=
']'
)
continue
;
/* Missing closing parenthesis. Assume this was no group */
if
(
*
src_ptr
!=
']'
)
continue
;
/* Missing closing parenthesis. Assume this was no group */
in_section
=
TRUE
;
}
else
...
...
@@ -149,10 +171,10 @@ int modify_defaults_file(const char *file_location, const char *option,
{
/* Don't write the file if there are no changes to be made */
if
(
my_chsize
(
fileno
(
cnf_file
),
(
my_off_t
)
(
dst_ptr
-
file_buffer
),
0
,
MYF
(
MY_WME
))
||
my_fseek
(
cnf_file
,
0
,
MY_SEEK_SET
,
MYF
(
0
))
||
my_fwrite
(
cnf_file
,
file_buffer
,
(
uint
)
(
dst_ptr
-
file_buffer
),
MYF
(
MY_NABP
)))
MYF
(
MY_WME
))
||
my_fseek
(
cnf_file
,
0
,
MY_SEEK_SET
,
MYF
(
0
))
||
my_fwrite
(
cnf_file
,
file_buffer
,
(
uint
)
(
dst_ptr
-
file_buffer
),
MYF
(
MY_NABP
)))
goto
err
;
}
if
(
my_fclose
(
cnf_file
,
MYF
(
MY_WME
)))
...
...
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