04f1904a7d
cx_Oracle; stop using "unicode" mode in the OCI as well since that appears to have bugs in some places and doesn't really solve any problems anyway.
90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
//-----------------------------------------------------------------------------
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// Buffer.c
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// Defines buffer structure and routines for populating it. These are used
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// to translate Python objects into the buffers needed for Oracle, including
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// Unicode or buffer objects.
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//-----------------------------------------------------------------------------
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// define structure for abstracting string buffers
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typedef struct {
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const void *ptr;
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Py_ssize_t numCharacters;
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Py_ssize_t size;
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PyObject *obj;
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} udt_Buffer;
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//-----------------------------------------------------------------------------
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// cxBuffer_Init()
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// Initialize the buffer with an empty string. Returns 0 as a convenience to
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// the caller.
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//-----------------------------------------------------------------------------
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static int cxBuffer_Init(
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udt_Buffer *buf) // buffer to initialize
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{
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buf->ptr = NULL;
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buf->size = 0;
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buf->numCharacters = 0;
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buf->obj = NULL;
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return 0;
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}
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//-----------------------------------------------------------------------------
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// cxBuffer_Copy()
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// Copy the contents of the buffer.
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//-----------------------------------------------------------------------------
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static int cxBuffer_Copy(
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udt_Buffer *buf, // buffer to copy into
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udt_Buffer *copyFromBuf) // buffer to copy from
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{
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buf->ptr = copyFromBuf->ptr;
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buf->size = copyFromBuf->size;
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buf->numCharacters = copyFromBuf->numCharacters;
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Py_XINCREF(copyFromBuf->obj);
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buf->obj = copyFromBuf->obj;
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return 0;
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}
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//-----------------------------------------------------------------------------
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// cxBuffer_FromObject()
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// Populate the string buffer from a unicode object.
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//-----------------------------------------------------------------------------
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static int cxBuffer_FromObject(
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udt_Buffer *buf, // buffer to fill
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PyObject *obj, // object (string or Unicode object)
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const char *encoding) // encoding to use, if applicable
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{
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if (!obj)
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return cxBuffer_Init(buf);
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if (encoding && PyUnicode_Check(obj)) {
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buf->obj = PyUnicode_AsEncodedString(obj, encoding, NULL);
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if (!buf->obj)
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return -1;
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buf->ptr = PyBytes_AS_STRING(buf->obj);
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buf->size = PyBytes_GET_SIZE(buf->obj);
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buf->numCharacters = PyUnicode_GET_SIZE(obj);
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} else if (PyBytes_Check(obj)) {
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Py_INCREF(obj);
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buf->obj = obj;
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buf->ptr = PyBytes_AS_STRING(buf->obj);
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buf->size = buf->numCharacters = PyBytes_GET_SIZE(buf->obj);
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#if PY_MAJOR_VERSION < 3
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} else if (PyBuffer_Check(obj)) {
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if (PyObject_AsReadBuffer(obj, &buf->ptr, &buf->size) < 0)
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return -1;
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Py_INCREF(obj);
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buf->obj = obj;
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buf->numCharacters = buf->size;
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#endif
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} else {
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PyErr_SetString(PyExc_TypeError, CXORA_TYPE_ERROR);
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return -1;
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}
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return 0;
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}
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#define cxBuffer_Clear(buf) Py_XDECREF((buf)->obj)
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