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/*
 * qtime - Display time as English sentence
 *
 * Copyright (C) 1999  Klaus Alexander Seistrup and Landon Curt Noll
 *
 * Written by: Klaus Alexander Seistrup <kseis@magnetic-ink.dk>
 * With mods by: Landon Curt Noll <http://www.isthe.com/chongo/>
 *
 * Calc is open software; you can redistribute it and/or modify it under
 * the terms of the version 2.1 of the GNU Lesser General Public License
 * as published by the Free Software Foundation.
 *
 * Calc 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 Lesser General
 * Public License for more details.
 *
 * A copy of version 2.1 of the GNU Lesser General Public License is
 * distributed with calc under the filename COPYING-LGPL.  You should have
 * received a copy with calc; if not, write to Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * @(#) $Revision: 30.1 $
 * @(#) $Id: qtime.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
 * @(#) $Source: /usr/local/src/cmd/calc/cal/RCS/qtime.cal,v $
 *
 * Under source code control:	1999/10/13 04:10:33
 * File existed as early as:	1999
 *
 * chongo <was here> /\oo/\	http://www.isthe.com/chongo/
 * Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
 */

/*
 * usage:
 *	qtime(utc_hr_offset)
 *
 *	utc_hr_offset	Offset from UTC in hours.
 *
 * See:
 *	http://www.magnetic-ink.dk/download/qtime.html
 *
 * for examples of qtime() written on other languages.
 */


/*
 * qtime - Display time as English sentence
 */
define qtime(utc_hr_offset)
{
	static mat hr[12] = {
	  "twelve", "one", "two", "three", "four", "five",
	  "six", "seven", "eight", "nine", "ten", "eleven"
	};
	static mat mn[7] = {
	  "", "five ", "ten ", "a quarter ", "twenty ", "twenty-five ", "half "
	};
	static mat ny[5] = {
	  "nearly ", "almost ", "", "just after ", "after "
	};
	static mat up[3] = {
	  "to ", "", "past "
	};
	local adj_mins = (((time() + utc_hr_offset*3600) % 86400) + 30)//60+27;
	local hours = (adj_mins // 60) % 12;
	local minutes = adj_mins % 60;
	local almost =	minutes % 5;
	local divisions = (minutes // 5) - 5;
	local to_past_idx =	 divisions > 0 ? 1 : 0;

	if (divisions < 0) {
		divisions = -divisions;
		to_past_idx = -1;
	}
	++to_past_idx;

	/*
	 * Print the English sentence
	 *
	 * We avoid forward and back quotes just to show that the char()
	 * builtin function can be used in conjunction with a printf.
	 */
	printf("It%cs %s%s%s%s",
	       char(0x27), ny[almost], mn[divisions],
	       up[to_past_idx], hr[hours]);
	if (divisions == 0)
		printf(" o%cclock", char(0x27));
	print ".";
}