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1 | #ifndef Py_CSTRINGIO_H |
2 | #define Py_CSTRINGIO_H | |
3 | #ifdef __cplusplus | |
4 | extern "C" { | |
5 | #endif | |
6 | /* | |
7 | ||
8 | This header provides access to cStringIO objects from C. | |
9 | Functions are provided for calling cStringIO objects and | |
10 | macros are provided for testing whether you have cStringIO | |
11 | objects. | |
12 | ||
13 | Before calling any of the functions or macros, you must initialize | |
14 | the routines with: | |
15 | ||
16 | PycString_IMPORT | |
17 | ||
18 | This would typically be done in your init function. | |
19 | ||
20 | */ | |
21 | #define PycString_IMPORT \ | |
22 | PycStringIO = (struct PycStringIO_CAPI*)PyCObject_Import("cStringIO", \ | |
23 | "cStringIO_CAPI") | |
24 | ||
25 | /* Basic functions to manipulate cStringIO objects from C */ | |
26 | ||
27 | static struct PycStringIO_CAPI { | |
28 | ||
29 | /* Read a string from an input object. If the last argument | |
30 | is -1, the remainder will be read. | |
31 | */ | |
32 | int(*cread)(PyObject *, char **, int); | |
33 | ||
34 | /* Read a line from an input object. Returns the length of the read | |
35 | line as an int and a pointer inside the object buffer as char** (so | |
36 | the caller doesn't have to provide its own buffer as destination). | |
37 | */ | |
38 | int(*creadline)(PyObject *, char **); | |
39 | ||
40 | /* Write a string to an output object*/ | |
41 | int(*cwrite)(PyObject *, char *, int); | |
42 | ||
43 | /* Get the output object as a Python string (returns new reference). */ | |
44 | PyObject *(*cgetvalue)(PyObject *); | |
45 | ||
46 | /* Create a new output object */ | |
47 | PyObject *(*NewOutput)(int); | |
48 | ||
49 | /* Create an input object from a Python string | |
50 | (copies the Python string reference). | |
51 | */ | |
52 | PyObject *(*NewInput)(PyObject *); | |
53 | ||
54 | /* The Python types for cStringIO input and output objects. | |
55 | Note that you can do input on an output object. | |
56 | */ | |
57 | PyTypeObject *InputType, *OutputType; | |
58 | ||
59 | } *PycStringIO; | |
60 | ||
61 | /* These can be used to test if you have one */ | |
62 | #define PycStringIO_InputCheck(O) \ | |
63 | ((O)->ob_type==PycStringIO->InputType) | |
64 | #define PycStringIO_OutputCheck(O) \ | |
65 | ((O)->ob_type==PycStringIO->OutputType) | |
66 | ||
67 | #ifdef __cplusplus | |
68 | } | |
69 | #endif | |
70 | #endif /* !Py_CSTRINGIO_H */ |