text: /* cursor.h - definition for the psycopg cursor type
   *
   * Copyright (C) 2003 Federico Di Gregorio <fog@debian.org>
   *
   * This file is part of psycopg.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2,
   * or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   */
  
  #ifndef PSYCOPG_CURSOR_H
  #define PSYCOPG_CURSOR_H 1
  
  #define PY_SSIZE_T_CLEAN
  #include <Python.h>
  #include <libpq-fe.h>
  
  #include "psycopg/config.h"
  #include "psycopg/connection.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  extern HIDDEN PyTypeObject cursorType;
  
  typedef struct {
      PyObject_HEAD
  
      connectionObject *conn; /* connection owning the cursor */
  
      int closed:1;            /* 1 if the cursor is closed */
      int notuples:1;          /* 1 if the command was not a SELECT query */
      int needsfetch:1;        /* 1 if a call to pq_fetch is pending */
  
      long int rowcount;       /* number of rows affected by last execute */
      long int columns;        /* number of columns fetched from the db */
      long int arraysize;      /* how many rows should fetchmany() return */
      long int row;            /* the row counter for fetch*() operations */
      long int mark;           /* transaction marker, copied from conn */
  
      PyObject *description;   /* read-only attribute: sequence of 7-item
                                  sequences.*/
  
      /* postgres connection stuff */
      PGresult   *pgres;     /* result of last query */
      PyObject   *pgstatus;  /* last message from the server after an execute */
      Oid         lastoid;   /* last oid from an insert or InvalidOid */
  
      PyObject *casts;      /* an array (tuple) of typecast functions */
      PyObject *caster;     /* the current typecaster object */
  
      PyObject *copyfile;   /* file-like used during COPY TO/FROM ops */
      Py_ssize_t copysize;   /* size of the copy buffer during COPY TO/FROM ops */
  #define DEFAULT_COPYSIZE 16384
  #define DEFAULT_COPYBUFF  1024
  
      PyObject *tuple_factory;    /* factory for result tuples */
      PyObject *tzinfo_factory;   /* factory for tzinfo objects */
  
      PyObject *query;      /* last query executed */
  
      char *qattr;          /* quoting attr, used when quoting strings */
      char *notice;         /* a notice from the backend */
      char *name;           /* this cursor name */
  
      PyObject *string_types;   /* a set of typecasters for string types */
      PyObject *binary_types;   /* a set of typecasters for binary types */
  
  } cursorObject;
  
  /* C-callable functions in cursor_int.c and cursor_ext.c */
  HIDDEN void curs_reset(cursorObject *self);
  
  /* exception-raising macros */
  #define EXC_IF_CURS_CLOSED(self) \
  if ((self)->closed || ((self)->conn && (self)->conn->closed)) { \
      PyErr_SetString(InterfaceError, "cursor already closed");   \
      return NULL; }
  
  #define EXC_IF_NO_TUPLES(self) \
  if ((self)->notuples && (self)->name == NULL) {               \
      PyErr_SetString(ProgrammingError, "no results to fetch"); \
      return NULL; }
  
  #define EXC_IF_NO_MARK(self) \
  if ((self)->mark != (self)->conn->mark) {                                  \
      PyErr_SetString(ProgrammingError, "named cursor isn't valid anymore"); \
      return NULL; }
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* !defined(PSYCOPG_CURSOR_H) */
  