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svn+ssh://pythondev@svn.python.org/python/trunk ........ r74958 | ezio.melotti | 2009-09-20 10:10:39 +0300 (Sun, 20 Sep 2009) | 1 line #6881 - fixed wrong return type; improved the formatting ........
86 lines
2.1 KiB
ReStructuredText
86 lines
2.1 KiB
ReStructuredText
.. highlightlang:: c
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.. _bytearrayobjects:
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Byte Array Objects
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------------------
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.. index:: object: bytearray
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.. ctype:: PyByteArrayObject
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This subtype of :ctype:`PyObject` represents a Python bytearray object.
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.. cvar:: PyTypeObject PyByteArray_Type
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This instance of :ctype:`PyTypeObject` represents the Python bytearray type;
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it is the same object as ``bytearray`` in the Python layer.
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Type check macros
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^^^^^^^^^^^^^^^^^
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.. cfunction:: int PyByteArray_Check(PyObject *o)
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Return true if the object *o* is a bytearray object or an instance of a
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subtype of the bytearray type.
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.. cfunction:: int PyByteArray_CheckExact(PyObject *o)
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Return true if the object *o* is a bytearray object, but not an instance of a
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subtype of the bytearray type.
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Direct API functions
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^^^^^^^^^^^^^^^^^^^^
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.. cfunction:: PyObject* PyByteArray_FromObject(PyObject *o)
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Return a new bytearray object from any object, *o*, that implements the
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buffer protocol.
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.. XXX expand about the buffer protocol, at least somewhere
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.. cfunction:: PyObject* PyByteArray_FromStringAndSize(const char *string, Py_ssize_t len)
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Create a new bytearray object from *string* and its length, *len*. On
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failure, *NULL* is returned.
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.. cfunction:: PyObject* PyByteArray_Concat(PyObject *a, PyObject *b)
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Concat bytearrays *a* and *b* and return a new bytearray with the result.
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.. cfunction:: Py_ssize_t PyByteArray_Size(PyObject *bytearray)
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Return the size of *bytearray* after checking for a *NULL* pointer.
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.. cfunction:: char* PyByteArray_AsString(PyObject *bytearray)
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Return the contents of *bytearray* as a char array after checking for a
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*NULL* pointer.
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.. cfunction:: int PyByteArray_Resize(PyObject *bytearray, Py_ssize_t len)
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Resize the internal buffer of *bytearray* to *len*.
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Macros
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^^^^^^
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These macros trade safety for speed and they don't check pointers.
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.. cfunction:: char* PyByteArray_AS_STRING(PyObject *bytearray)
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Macro version of :cfunc:`PyByteArray_AsString`.
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.. cfunction:: Py_ssize_t PyByteArray_GET_SIZE(PyObject *bytearray)
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Macro version of :cfunc:`PyByteArray_Size`.
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