/*-
 * Copyright (c) 2013 James K. Lowden
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef __CSVTAB_H__
#define __CSVTAB_H__

#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>

#include <sys/mman.h>

#include <sqlite3ext.h>

#include "parser/parser.h"

struct col_t
{
  size_t len;
  char *data;
};

struct row_t
{
  size_t icol, ncols;
  struct col_t *cols;
};

struct vtab {
  sqlite3_vtab base;        /* Base class - must be first */
  sqlite3 *db;              /* Database connection */
  char *dbname;             /* Name of database holding this table */
  char *tablename;          /* Name of the virtual table */
  char *filename;           /* Name of csv file */
  struct col_t csvmem;      /* Address and size of mmap memory */
  colfunc_t colfunc;        /* Address of column-processing callback function */
  const char *pbegin;       /* Address of first row (if headers) */
  char metadata[1];	    /* Storage for names */
};

struct vtab_cursor {
  sqlite3_vtab_cursor base;    /* Base class - must be first */
  struct row_t row;
  const char *p;
};

#endif // CSVTAB