2e26d0beb8
support within Python 2.x; move away from character semantics which Oracle is deprecating anyway to byte semantics which should hopefully eliminate the problem with a backend character set of UTF-8.
98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
//-----------------------------------------------------------------------------
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// StringUtils.c
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// Defines constants and routines specific to handling strings.
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//-----------------------------------------------------------------------------
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// define structure for abstracting string buffers
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typedef struct {
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char *ptr;
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Py_ssize_t size;
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#if defined(WITH_UNICODE) && defined(Py_UNICODE_WIDE)
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PyObject *encodedString;
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#endif
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} udt_StringBuffer;
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// use the bytes methods in cx_Oracle and define them as the equivalent string
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// type methods as is done in Python 2.6
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#ifndef PyBytes_Check
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#define PyBytes_Type PyString_Type
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#define PyBytes_AS_STRING PyString_AS_STRING
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#define PyBytes_GET_SIZE PyString_GET_SIZE
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#define PyBytes_Check PyString_Check
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#define PyBytes_Format PyString_Format
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#define PyBytes_FromString PyString_FromString
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#define PyBytes_FromStringAndSize PyString_FromStringAndSize
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#endif
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//-----------------------------------------------------------------------------
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// StringBuffer_Fill()
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// Fill the string buffer with the UTF-16 data that Oracle expects.
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//-----------------------------------------------------------------------------
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static int StringBuffer_Fill(
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udt_StringBuffer *buf, // buffer to fill
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PyObject *obj) // object to fill buffer with
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{
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if (!obj) {
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buf->ptr = NULL;
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buf->size = 0;
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#if defined(WITH_UNICODE) && defined(Py_UNICODE_WIDE)
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buf->encodedString = NULL;
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#endif
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return 0;
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}
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#ifdef WITH_UNICODE
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#ifdef Py_UNICODE_WIDE
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int one = 1;
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int byteOrder = (IS_LITTLE_ENDIAN) ? -1 : 1;
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buf->encodedString = PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(obj),
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PyUnicode_GET_SIZE(obj), NULL, byteOrder);
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if (!buf->encodedString)
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return -1;
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buf->ptr = PyBytes_AS_STRING(buf->encodedString);
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buf->size = PyBytes_GET_SIZE(buf->encodedString);
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#else
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buf->ptr = (char*) PyUnicode_AS_UNICODE(obj);
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buf->size = PyUnicode_GET_DATA_SIZE(obj);
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#endif
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#else
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buf->ptr = PyBytes_AS_STRING(obj);
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buf->size = PyBytes_GET_SIZE(obj);
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#endif
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return 0;
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}
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#ifdef WITH_UNICODE
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#define CXORA_CHARSETID OCI_UTF16ID
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#define CXORA_ERROR_TEXT_LENGTH 2048
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#define CXORA_STRING_TYPE &PyUnicode_Type
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#define CXORA_STRING_FROM_FORMAT PyUnicode_Format
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#define CXORA_STRING_CHECK PyUnicode_Check
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#define CXORA_ASCII_TO_STRING(str) \
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PyUnicode_DecodeASCII(str, strlen(str), NULL)
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#ifdef Py_UNICODE_WIDE
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#define StringBuffer_CLEAR(buffer) \
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Py_XDECREF((buffer)->encodedString)
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#define CXORA_BUFFER_TO_STRING(buffer, numBytes) \
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PyUnicode_DecodeUTF16(buffer, numBytes, NULL, NULL)
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#else
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#define StringBuffer_CLEAR(buffer)
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#define CXORA_BUFFER_TO_STRING(buffer, numBytes) \
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PyUnicode_FromUnicode((Py_UNICODE*) (buffer), (numBytes) / 2)
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#endif
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#else
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#define CXORA_CHARSETID 0
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#define CXORA_ERROR_TEXT_LENGTH 1024
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#define CXORA_STRING_TYPE &PyBytes_Type
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#define CXORA_STRING_FROM_FORMAT PyBytes_Format
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#define CXORA_STRING_CHECK PyBytes_Check
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#define StringBuffer_CLEAR(buffer)
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#define CXORA_ASCII_TO_STRING(str) \
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PyBytes_FromString(str)
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#define CXORA_BUFFER_TO_STRING(buffer, numBytes) \
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PyBytes_FromStringAndSize(buffer, numBytes)
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#endif
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