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annotate Include/bytesobject.h @ 37927:a7f3765ea464

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Here is a bytes type. It's very minimal but it's a start.
author Guido van Rossum <guido@python.org>
date Sat, 22 Apr 2006 23:28:04 +0000
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children e0b7e34b5971
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37927
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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1 /* Bytes object interface */
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2
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3 #ifndef Py_BYTESOBJECT_H
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4 #define Py_BYTESOBJECT_H
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5 #ifdef __cplusplus
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6 extern "C" {
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7 #endif
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8
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9 #include <stdarg.h>
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10
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11 /* Type PyBytesObject represents a mutable array of bytes.
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12 * The Python API is that of a sequence;
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13 * the bytes are mapped to ints in [0, 256).
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14 * Bytes are not characters; they may be used to encode characters.
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15 * The only way to go between bytes and str/unicode is via encoding
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16 * and decoding.
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17 * For the concenience of C programmers, the bytes type is considered
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18 * to contain a char pointer, not an unsigned char pointer.
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19 */
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20
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21 /* Object layout */
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22 typedef struct {
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23 PyObject_VAR_HEAD
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24 char *ob_sval;
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25 } PyBytesObject;
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26
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27 /* Type object */
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28 PyAPI_DATA(PyTypeObject) PyBytes_Type;
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29
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30 /* Type check macros */
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31 #define PyBytes_Check(self) PyObject_TypeCheck(self, &PyBytes_Type)
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32 #define PyBytes_CheckExact(self) ((self)->ob_type == &PyBytes_Type)
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33
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34 /* Direct API functions */
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35 PyAPI_FUNC(PyObject *) PyBytes_FromStringAndSize(const char *, Py_ssize_t);
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36 PyAPI_FUNC(Py_ssize_t) PyBytes_Size(PyObject *);
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37 PyAPI_FUNC(char *) PyBytes_AsString(PyObject *);
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38 PyAPI_FUNC(int) PyBytes_Resize(PyObject *, Py_ssize_t);
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39
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40 /* Macros, trading safety for speed */
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41 #define PyBytes_AS_STRING(self) (((PyBytesObject *)(self))->ob_sval)
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42 #define PyBytes_GET_SIZE(self) (((PyBytesObject *)(self))->ob_size)
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43
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44 #ifdef __cplusplus
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45 }
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46 #endif
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47 #endif /* !Py_BYTESOBJECT_H */