datetimeformatter.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// DateTimeFormatter.h
//
// $Id: //poco/Main/Foundation/include/Foundation/DateTimeFormatter.h#5 $
//
// Definition of the DateTimeFormatter class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// 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. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
// COPYRIGHT OWNER 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 Foundation_DateTimeFormatter_INCLUDED
#define Foundation_DateTimeFormatter_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif


Foundation_BEGIN


class DateTime;
class Timestamp;


class Foundation_API DateTimeFormatter
	/// This class converts dates and times into strings, supporting a  
	/// variety of standard and custom formats.
{
public:
	enum
	{
		UTC = 0xFFFF /// Special value for timeZoneDifferential denoting UTC. 
	};

	static std::string format(const Timestamp& timestamp, const std::string& fmt, int timeZoneDifferential = UTC);
		/// Formats the given timestamp according to the given format.
		/// The format string is used as a template to format the date and
		/// is copied character by character except for the following special characters,
		/// which are replaced by the corresponding value.
		///
		///   * %w - abbreviated weekday (Mon, Tue, ...)
		///   * %W - full weekday (Monday, Tuesday, ...)
		///   * %b - abbreviated month (Jan, Feb, ...)
		///   * %B - full month (January, February, ...)
		///   * %d - zero-padded day of month (01 .. 31)
		///   * %e - day of month (1 .. 31)
		///   * %f - space-padded day of month ( 1 .. 31)
		///   * %m - zero-padded month (01 .. 12)
		///   * %n - month (1 .. 12)
		///   * %o - space-padded month ( 1 .. 12)
		///   * %y - year without century (70)
		///   * %Y - year with century (1970)
		///   * %H - hour (00 .. 23)
		///   * %h - hour (00 .. 12)
		///   * %a - am/pm
		///   * %A - AM/PM
		///   * %M - minute (00 .. 59)
		///   * %S - second (00 .. 59)
		///   * %i - millisecond (000 .. 999)
		///   * %c - centisecond (0 .. 9)
		///   * %z - time zone differential in ISO 8601 format (Z or +NN.NN).
		///   * %Z - time zone differential in RFC format (GMT or +NNNN)
		///   * %% - percent sign
		///
		/// Class DateTimeFormat defines format strings for various standard date/time formats.

	static std::string format(const DateTime& dateTime, const std::string& fmt, int timeZoneDifferential = UTC);
		/// Formats the given timestamp according to the given format.
		/// See format(const Timestamp&, const std::string&, int) for more information.

protected:
	static std::string tzdISO(int timeZoneDifferential);
	static std::string tzdRFC(int timeZoneDifferential);
};


Foundation_END


#endif // Foundation_DateTimeFormatter_INCLUDED