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msgpack-python/msgpack/pack.h at master · devendor/msgpack-python · GitHub
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/*
* MessagePack for Python packing routine
*
* Copyright (C) 2009 Naoki INADA
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include
<stddef.h>
#include
<stdlib.h>
#include
"sysdep.h"
#include
<limits.h>
#include
<string.h>
#ifdef
__cplusplus
extern
"C"
{
#endif
#ifdef
_MSC_VER
#define
inline
__inline
#endif
typedef
struct
msgpack_packer
{
char
*
buf
;
size_t
length
;
size_t
buf_size
;
bool
use_bin_type
;
}
msgpack_packer
;
typedef
struct
Packer
Packer
;
static
inline
int
msgpack_pack_write
(
msgpack_packer
*
pk
,
const
char
*
data
,
size_t
l
)
{
char
*
buf
=
pk
->
buf
;
size_t
bs
=
pk
->
buf_size
;
size_t
len
=
pk
->
length
;
if
(
len
+
l
>
bs
) {
bs
=
(
len
+
l
)
*
2
;
buf
=
(
char
*
)
PyMem_Realloc
(
buf
,
bs
);
if
(!
buf
) {
PyErr_NoMemory
();
return
-1
;
}
}
memcpy
(
buf
+
len
,
data
,
l
);
len
+=
l
;
pk
->
buf
=
buf
;
pk
->
buf_size
=
bs
;
pk
->
length
=
len
;
return
0
;
}
#define
msgpack_pack_append_buffer
(
user
,
buf
,
len
) \
return msgpack_pack_write(user, (const char*)buf, len)
#include
"pack_template.h"
// return -2 when o is too long
static
inline
int
msgpack_pack_unicode
(
msgpack_packer
*
pk
,
PyObject
*
o
,
long long
limit
)
{
#if
PY_MAJOR_VERSION
>=
3
assert
(
PyUnicode_Check
(
o
));
Py_ssize_t
len
;
const
char
*
buf
=
PyUnicode_AsUTF8AndSize
(
o
,
&
len
);
if
(
buf
==
NULL
)
return
-1
;
if
(
len
>
limit
) {
return
-2
;
}
int
ret
=
msgpack_pack_raw
(
pk
,
len
);
if
(
ret
)
return
ret
;
return
msgpack_pack_raw_body
(
pk
,
buf
,
len
);
#else
PyObject
*
bytes
;
Py_ssize_t
len
;
int
ret
;
// py2
bytes
=
PyUnicode_AsUTF8String
(
o
);
if
(
bytes
==
NULL
)
return
-1
;
len
=
PyString_GET_SIZE
(
bytes
);
if
(
len
>
limit
) {
Py_DECREF
(
bytes
);
return
-2
;
}
ret
=
msgpack_pack_raw
(
pk
,
len
);
if
(
ret
) {
Py_DECREF
(
bytes
);
return
-1
;
}
ret
=
msgpack_pack_raw_body
(
pk
,
PyString_AS_STRING
(
bytes
),
len
);
Py_DECREF
(
bytes
);
return
ret
;
#endif
}
#ifdef
__cplusplus
}
#endif
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