plpy_util.c File Reference

#include "postgres.h"
#include "mb/pg_wchar.h"
#include "utils/memutils.h"
#include "plpython.h"
#include "plpy_util.h"
#include "plpy_elog.h"

Include dependency graph for plpy_util.c:

Go to the source code of this file.

Functions
PyObject *	PLyUnicode_Bytes (PyObject *unicode)
char *	PLyUnicode_AsString (PyObject *unicode)

Function Documentation

PLyUnicode_AsString()

char* PLyUnicode_AsString

(

PyObject *

unicode

)

Definition at line 93 of file plpy_util.c.

References pfree(), pg_server_to_any(), PG_UTF8, PLyUnicode_Bytes(), PLyUnicode_FromStringAndSize, pstrdup(), and PyBytes_AsString.

Referenced by PLy_exec_trigger(), PLy_modify_tuple(), and PLy_spi_prepare().

{
    PyObject   *o = PLyUnicode_Bytes(unicode);
    char       *rv = pstrdup(PyBytes_AsString(o));

    Py_XDECREF(o);
    return rv;
}

PLyUnicode_Bytes()

PyObject* PLyUnicode_Bytes

(

PyObject *

unicode

)

Definition at line 25 of file plpy_util.c.

References ERROR, GetDatabaseEncoding(), pfree(), pg_any_to_server(), PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, PG_UTF8, PLy_elog, PyBytes_AsString, and PyBytes_FromStringAndSize.

Referenced by PLyObject_AsString(), and PLyUnicode_AsString().

{
    PyObject   *bytes,
               *rv;
    char       *utf8string,
               *encoded;

    /* First encode the Python unicode object with UTF-8. */
    bytes = PyUnicode_AsUTF8String(unicode);
    if (bytes == NULL)
        PLy_elog(ERROR, "could not convert Python Unicode object to bytes");

    utf8string = PyBytes_AsString(bytes);
    if (utf8string == NULL)
    {
        Py_DECREF(bytes);
        PLy_elog(ERROR, "could not extract bytes from encoded string");
    }

    /*
     * Then convert to server encoding if necessary.
     *
     * PyUnicode_AsEncodedString could be used to encode the object directly
     * in the server encoding, but Python doesn't support all the encodings
     * that PostgreSQL does (EUC_TW and MULE_INTERNAL). UTF-8 is used as an
     * intermediary in PLyUnicode_FromString as well.
     */
    if (GetDatabaseEncoding() != PG_UTF8)
    {
        PG_TRY();
        {
            encoded = pg_any_to_server(utf8string,
                                       strlen(utf8string),
                                       PG_UTF8);
        }
        PG_CATCH();
        {
            Py_DECREF(bytes);
            PG_RE_THROW();
        }
        PG_END_TRY();
    }
    else
        encoded = utf8string;

    /* finally, build a bytes object in the server encoding */
    rv = PyBytes_FromStringAndSize(encoded, strlen(encoded));

    /* if pg_any_to_server allocated memory, free it now */
    if (utf8string != encoded)
        pfree(encoded);

    Py_DECREF(bytes);
    return rv;
}