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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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; version 2 of the License.
*
* 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include <drizzled/select_to_file.h>
/*
List of all possible characters of a numeric value text representation.
*/
#define NUMERIC_CHARS ".0123456789e+-"
namespace drizzled
{
class select_export :
public select_to_file
{
uint32_t field_term_length;
int field_sep_char,escape_char,line_sep_char;
int field_term_char; // first char of FIELDS TERMINATED BY or MAX_INT
/*
The is_ambiguous_field_sep field is true if a value of the field_sep_char
field is one of the 'n', 't', 'r' etc characters
(see the READ_INFO::unescape method and the ESCAPE_CHARS constant value).
*/
bool is_ambiguous_field_sep;
/*
The is_ambiguous_field_term is true if field_sep_char contains the first
char of the FIELDS TERMINATED BY (ENCLOSED BY is empty), and items can
contain this character.
*/
bool is_ambiguous_field_term;
/*
The is_unsafe_field_sep field is true if a value of the field_sep_char
field is one of the '0'..'9', '+', '-', '.' and 'e' characters
(see the NUMERIC_CHARS constant value).
*/
bool is_unsafe_field_sep;
bool fixed_row_size;
public:
select_export(file_exchange *ex) :
select_to_file(ex),
field_term_length(0),
field_sep_char(0),
escape_char(0),
line_sep_char(0),
field_term_char(0),
is_ambiguous_field_sep(0),
is_ambiguous_field_term(0),
is_unsafe_field_sep(0),
fixed_row_size(0)
{}
~select_export();
int prepare(List<Item> &list, Select_Lex_Unit *u);
bool send_data(List<Item> &items);
private:
inline bool needs_escaping(char character, bool enclosed)
{
if ((character == escape_char) ||
(enclosed ? character == field_sep_char : character == field_term_char) ||
character == line_sep_char ||
(character == 0))
return true;
return false;
}
};
} /* namespace drizzled */
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