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// Copyright 2013 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Functions for formatting duration values. Such as "3 days"
* "3 hours", "14 minutes", "2 hours 45 minutes".
*
*/
goog.provide('goog.date.duration');
goog.require('goog.i18n.DateTimeFormat');
goog.require('goog.i18n.MessageFormat');
/**
* Number of milliseconds in a minute.
* @type {number}
* @private
*/
goog.date.duration.MINUTE_MS_ = 60000;
/**
* Number of milliseconds in an hour.
* @type {number}
* @private
*/
goog.date.duration.HOUR_MS_ = 3600000;
/**
* Number of milliseconds in a day.
* @type {number}
* @private
*/
goog.date.duration.DAY_MS_ = 86400000;
/**
* Accepts a duration in milliseconds and outputs an absolute duration time in
* form of "1 day", "2 hours", "20 minutes", "2 days 1 hour 15 minutes" etc.
* @param {number} durationMs Duration in milliseconds.
* @return {string} The formatted duration.
*/
goog.date.duration.format = function(durationMs) {
var ms = Math.abs(durationMs);
// Handle durations shorter than 1 minute.
if (ms < goog.date.duration.MINUTE_MS_) {
/**
* @desc Duration time of zero minutes.
*/
var MSG_ZERO_MINUTES = goog.getMsg('0 minutes');
return MSG_ZERO_MINUTES;
}
var days = Math.floor(ms / goog.date.duration.DAY_MS_);
ms %= goog.date.duration.DAY_MS_;
var hours = Math.floor(ms / goog.date.duration.HOUR_MS_);
ms %= goog.date.duration.HOUR_MS_;
var minutes = Math.floor(ms / goog.date.duration.MINUTE_MS_);
// Localized number representations.
var daysText = goog.i18n.DateTimeFormat.localizeNumbers(days);
var hoursText = goog.i18n.DateTimeFormat.localizeNumbers(hours);
var minutesText = goog.i18n.DateTimeFormat.localizeNumbers(minutes);
// We need a space after the days if there are hours or minutes to come.
var daysSeparator = days * (hours + minutes) ? ' ' : '';
// We need a space after the hours if there are minutes to come.
var hoursSeparator = hours * minutes ? ' ' : '';
/**
* @desc The days part of the duration message: 1 day, 5 days.
*/
var MSG_DURATION_DAYS = goog.getMsg(
'{COUNT, plural, ' +
'=0 {}' +
'=1 {{TEXT} day}' +
'other {{TEXT} days}}');
/**
* @desc The hours part of the duration message: 1 hour, 5 hours.
*/
var MSG_DURATION_HOURS = goog.getMsg(
'{COUNT, plural, ' +
'=0 {}' +
'=1 {{TEXT} hour}' +
'other {{TEXT} hours}}');
/**
* @desc The minutes part of the duration message: 1 minute, 5 minutes.
*/
var MSG_DURATION_MINUTES = goog.getMsg(
'{COUNT, plural, ' +
'=0 {}' +
'=1 {{TEXT} minute}' +
'other {{TEXT} minutes}}');
var daysPart = goog.date.duration.getDurationMessagePart_(
MSG_DURATION_DAYS, days, daysText);
var hoursPart = goog.date.duration.getDurationMessagePart_(
MSG_DURATION_HOURS, hours, hoursText);
var minutesPart = goog.date.duration.getDurationMessagePart_(
MSG_DURATION_MINUTES, minutes, minutesText);
/**
* @desc Duration time text concatenated from the individual time unit message
* parts. The separator will be a space (e.g. '1 day 2 hours 24 minutes') or
* nothing in case one/two of the duration parts is empty (
* e.g. '1 hour 30 minutes', '3 days 15 minutes', '2 hours').
*/
var MSG_CONCATENATED_DURATION_TEXT = goog.getMsg(
'{$daysPart}{$daysSeparator}{$hoursPart}{$hoursSeparator}{$minutesPart}',
{
'daysPart': daysPart,
'daysSeparator': daysSeparator,
'hoursPart': hoursPart,
'hoursSeparator': hoursSeparator,
'minutesPart': minutesPart
});
return MSG_CONCATENATED_DURATION_TEXT;
};
/**
* Gets a duration message part for a time unit.
* @param {string} pattern The pattern to apply.
* @param {number} count The number of units.
* @param {string} text The string to use for amount of units in the message.
* @return {string} The formatted message part.
* @private
*/
goog.date.duration.getDurationMessagePart_ = function(pattern, count, text) {
var formatter = new goog.i18n.MessageFormat(pattern);
return formatter.format({'COUNT': count, 'TEXT': text});
};
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