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TDengine
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体验新版 GitCode,发现更多精彩内容 >>
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7dcbe810
编写于
5月 05, 2020
作者:
H
hzcheng
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电子邮件补丁
差异文件
add encode and decode functions
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65169b0a
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1 changed file
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src/util/inc/tcoding.h
src/util/inc/tcoding.h
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src/util/inc/tcoding.h
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/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TD_CODING_H_
#define _TD_CODING_H_
#ifdef __cplusplus
extern
"C"
{
#endif
#include <stdint.h>
#include <string.h>
#include "tutil.h"
const
int
TNUMBER
=
1
;
#define IS_LITTLE_ENDIAN() (*(char *)(&TNUMBER) != 0)
static
FORCE_INLINE
void
*
taosEncodeFixed16
(
void
*
buf
,
uint16_t
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
buf
,
&
value
,
sizeof
(
value
));
}
else
{
((
char
*
)
buf
)[
0
]
=
value
&
0xff
;
((
char
*
)
buf
)[
1
]
=
(
value
>>
8
)
&
0xff
;
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
value
));
}
static
FORCE_INLINE
void
*
taosEncodeFixed32
(
void
*
buf
,
uint32_t
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
buf
,
&
value
,
sizeof
(
value
));
}
else
{
((
char
*
)
buf
)[
0
]
=
value
&
0xff
;
((
char
*
)
buf
)[
1
]
=
(
value
>>
8
)
&
0xff
;
((
char
*
)
buf
)[
2
]
=
(
value
>>
16
)
&
0xff
;
((
char
*
)
buf
)[
3
]
=
(
value
>>
24
)
&
0xff
;
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
value
));
}
static
FORCE_INLINE
void
*
taosEncodeFixed64
(
void
*
buf
,
uint64_t
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
buf
,
&
value
,
sizeof
(
value
));
}
else
{
((
char
*
)
buf
)[
0
]
=
value
&
0xff
;
((
char
*
)
buf
)[
1
]
=
(
value
>>
8
)
&
0xff
;
((
char
*
)
buf
)[
2
]
=
(
value
>>
16
)
&
0xff
;
((
char
*
)
buf
)[
3
]
=
(
value
>>
24
)
&
0xff
;
((
char
*
)
buf
)[
4
]
=
(
value
>>
32
)
&
0xff
;
((
char
*
)
buf
)[
5
]
=
(
value
>>
40
)
&
0xff
;
((
char
*
)
buf
)[
6
]
=
(
value
>>
48
)
&
0xff
;
((
char
*
)
buf
)[
7
]
=
(
value
>>
56
)
&
0xff
;
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
value
));
}
static
FORCE_INLINE
void
*
taosDecodeFixed16
(
void
*
buf
,
uint16_t
*
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
value
,
buf
,
sizeof
(
*
value
));
}
else
{
((
char
*
)
value
)[
1
]
=
((
char
*
)
buf
)[
0
];
((
char
*
)
value
)[
0
]
=
((
char
*
)
buf
)[
1
];
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
*
value
));
}
static
FORCE_INLINE
void
*
taosDecodeFixed32
(
void
*
buf
,
uint32_t
*
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
value
,
buf
,
sizeof
(
*
value
));
}
else
{
((
char
*
)
value
)[
3
]
=
((
char
*
)
buf
)[
0
];
((
char
*
)
value
)[
2
]
=
((
char
*
)
buf
)[
1
];
((
char
*
)
value
)[
1
]
=
((
char
*
)
buf
)[
2
];
((
char
*
)
value
)[
0
]
=
((
char
*
)
buf
)[
3
];
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
*
value
));
}
static
FORCE_INLINE
void
*
taosDecodeFixed64
(
void
*
buf
,
uint64_t
*
value
)
{
if
(
IS_LITTLE_ENDIAN
())
{
memcpy
(
value
,
buf
,
sizeof
(
*
value
));
}
else
{
((
char
*
)
value
)[
7
]
=
((
char
*
)
buf
)[
0
];
((
char
*
)
value
)[
6
]
=
((
char
*
)
buf
)[
1
];
((
char
*
)
value
)[
5
]
=
((
char
*
)
buf
)[
2
];
((
char
*
)
value
)[
4
]
=
((
char
*
)
buf
)[
3
];
((
char
*
)
value
)[
3
]
=
((
char
*
)
buf
)[
4
];
((
char
*
)
value
)[
2
]
=
((
char
*
)
buf
)[
5
];
((
char
*
)
value
)[
1
]
=
((
char
*
)
buf
)[
6
];
((
char
*
)
value
)[
0
]
=
((
char
*
)
buf
)[
7
];
}
return
POINTER_DRIFT
(
buf
,
sizeof
(
*
value
));
}
// TODO
static
FORCE_INLINE
void
*
taosEncodeVariant16
(
void
*
buf
,
uint16_t
value
)
{}
static
FORCE_INLINE
void
*
taosEncodeVariant32
(
void
*
buf
,
uint32_t
value
)
{}
static
FORCE_INLINE
void
*
taosEncodeVariant64
(
void
*
buf
,
uint64_t
value
)
{}
static
FORCE_INLINE
void
*
taosDecodeVariant16
(
void
*
buf
,
uint16_t
*
value
)
{}
static
FORCE_INLINE
void
*
taosDecodeVariant32
(
void
*
buf
,
uint32_t
*
value
)
{}
static
FORCE_INLINE
void
*
taosDecodeVariant64
(
void
*
buf
,
uint64_t
*
value
)
{}
#ifdef __cplusplus
}
#endif
#endif
\ No newline at end of file
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