1
#define PY_SSIZE_T_CLEAN
2
#include <Python.h>
3
4
5
PyObject
*
mwgread
(
PyObject
*
self
,
PyObject
*
args
)
{
6
7
8
FILE
*
pFile
;
9
size_t
lSize
;
10
char
*
buffer
;
11
size_t
result
;
12
13
//
Parse
the
Python
object
arguments
into
C
variables
14
char
*
filename
;
15
if
(
!
PyArg_ParseTuple
(
args
,
"s"
,
&
filename
))
{
16
return
NULL
;
17
}
18
19
//
Try
to
open
the
file
20
pFile
=
fopen
(
filename
,
"r"
);
21
if
(
pFile
==
NULL
)
{
22
return
NULL
;
23
}
24
25
//
obtain
file
size
:
26
fseek
(
pFile
,
0
,
SEEK_END
);
27
lSize
=
ftell
(
pFile
);
28
rewind
(
pFile
);
29
30
//
allocate
memory
to
contain
the
whole
file
:
31
buffer
=
(
char
*
)
malloc
(
sizeof
(
char
)
*
lSize
);
32
if
(
buffer
==
NULL
)
{
fputs
(
"Memory error"
,
stderr
);
exit
(
2
);}
33
34
//
copy
the
file
into
the
buffer
:
35
result
=
fread
(
buffer
,
1
,
lSize
,
pFile
);
36
if
(
result
!=
lSize
)
{
fputs
(
"Reading error"
,
stderr
);
exit
(
3
);}
37
38
/*
the
whole
file
is
now
loaded
in
the
memory
buffer
.
*/
39
40
//
terminate
41
fclose
(
pFile
);
42
return
Py_BuildValue
(
"s"
,
buffer
);
43
}
44
45
46
PyMethodDef
module_methods
[]
=
{
47
{
"read"
,
mwgread
,
METH_VARARGS
,
"Reads a file and returns its contents"
},
48
{
NULL
}
49
};
50
51
struct
PyModuleDef
file_module
=
{
52
PyModuleDef_HEAD_INIT
,
53
"MWGFile"
,
54
NULL
,
55
-
1
,
56
module_methods
57
};
58
59
PyMODINIT_FUNC
PyInit_MWGFile
(
void
)
{
60
return
PyModule_Create
(
&
file_module
);
61
}
