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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
*
* Authors:
*
* Jay Pipes <jay.pipes@sun.com>
*
* 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 of the License, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
*
* Defines the API for matching datetime formats.
*/
#ifndef DRIZZLED_TEMPORAL_FORMAT_H
#define DRIZZLED_TEMPORAL_FORMAT_H
#include PCRE_HEADER
/* Output vector size for pcre matching. Should be multiple of 3. */
#define OUT_VECTOR_SIZE 30
namespace drizzled
{
/* Forward declaration needed */
class Temporal;
class TemporalFormat
{
protected:
const char *_pattern; /**< The regular expression string to match */
pcre *_re; /**< The compiled regular expression struct */
int32_t _error_offset; /**< Any error encountered during compilation or matching */
const char *_error;
/* Index of the pattern which is a specific temporal part */
uint32_t _year_part_index;
uint32_t _month_part_index;
uint32_t _day_part_index;
uint32_t _hour_part_index;
uint32_t _minute_part_index;
uint32_t _second_part_index;
uint32_t _usecond_part_index;
uint32_t _nsecond_part_index;
public:
/**
* Constructor which takes a regex string as
* it's only parameter.
*
* @param Pattern to use in matching
*/
TemporalFormat(const char *pattern);
/**
* Returns whether the instance is compiled
* and contains a valid regular expression.
*/
inline bool is_valid() const {return _re && (_error == NULL);}
/**
* Sets the index for the year part of the pattern.
*
* @param index of the temporal part
*/
inline void set_year_part_index(int32_t index) {_year_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the month part of the pattern.
*
* @param index of the temporal part
*/
inline void set_month_part_index(int32_t index) {_month_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the day part of the pattern.
*
* @param index of the temporal part
*/
inline void set_day_part_index(int32_t index) {_day_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the hour part of the pattern.
*
* @param index of the temporal part
*/
inline void set_hour_part_index(int32_t index) {_hour_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the minute part of the pattern.
*
* @param index of the temporal part
*/
inline void set_minute_part_index(int32_t index) {_minute_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the second part of the pattern.
*
* @param index of the temporal part
*/
inline void set_second_part_index(int32_t index) {_second_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the microsecond part of the pattern.
*
* @param index of the temporal part
*/
inline void set_usecond_part_index(int32_t index) {_usecond_part_index= ((index - 1) * 2) + 2;}
/**
* Sets the index for the nanosecond part of the pattern.
*
* @param index of the temporal part
*/
inline void set_nsecond_part_index(int32_t index) {_nsecond_part_index= ((index - 1) * 2) + 2;}
/**
* Returns true or false whether a supplied
* string matches the internal pattern for this
* temporal format string.
*
* @param Subject to match
* @param Length of subject string
*/
bool matches(const char *data, size_t data_len, Temporal *to);
};
} /* end namespace drizzled */
/**
* Initializes the regular expressions used by the datetime
* string matching conversion functions.
*
* Returns whether initialization was successful.
*
* @note
*
* This function is not thread-safe. Call before threading
* is initialized on server init.
*/
bool init_temporal_formats();
/**
* Frees all memory allocated for temporal format objects
*/
void deinit_temporal_formats();
#endif /* DRIZZLED_TEMPORAL_FORMAT_H */
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