File: cursor.c

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/***********************************************************
 *
 * MODULE:       SQLite driver
 *
 * AUTHOR(S):    Radim Blazek, Markus Metz
 *
 * COPYRIGHT:    (C) 2011 by the GRASS Development Team
 *
 * This program is free software under the GNU General Public
 * License (>=v2). Read the file COPYING that comes with GRASS
 * for details.
 *
 **************************************************************/
#include <stdio.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/glocale.h>
#include "globals.h"
#include "proto.h"

int db__driver_close_cursor(dbCursor *dbc)
{
    cursor *c;

    /* get my cursor via the dbc token */
    c = (cursor *)db_find_token(db_get_cursor_token(dbc));
    if (c == NULL)
        return DB_FAILED;

    sqlite3_finalize(c->statement);

    /* free_cursor(cursor) */
    free_cursor(c);

    return DB_OK;
}

cursor *alloc_cursor(void)
{
    cursor *c;

    /* allocate the cursor */
    c = (cursor *)db_malloc(sizeof(cursor));
    if (c == NULL) {
        db_d_append_error(_("Unable to allocate cursor."));
        return NULL;
    }

    c->statement = NULL;

    /* tokenize it */
    c->token = db_new_token(c);
    if (c->token < 0) {
        db_d_append_error(_("Unable to add new token."));
        return NULL;
    }

    c->kcols = NULL;
    c->nkcols = 0;

    return c;
}

void free_cursor(cursor *c)
{
    db_drop_token(c->token);

    G_free(c->kcols);
    G_free(c);
}