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105 lines
3.8 KiB
JavaScript
105 lines
3.8 KiB
JavaScript
// Copyright (C) 2011 by Will Tomlins
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//
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// Github profile: http://github.com/layam
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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function humanized_time_span(date, ref_date, date_formats, time_units) {
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//Date Formats must be be ordered smallest -> largest and must end in a format with ceiling of null
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date_formats = date_formats || {
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past: [
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{ ceiling: 60, text: "$seconds seconds ago" },
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{ ceiling: 3600, text: "$minutes minutes ago" },
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{ ceiling: 86400, text: "$hours hours ago" },
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{ ceiling: 2629744, text: "$days days ago" },
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{ ceiling: 31556926, text: "$months months ago" },
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{ ceiling: null, text: "$years years ago" }
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],
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future: [
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{ ceiling: 60, text: "in $seconds seconds" },
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{ ceiling: 3600, text: "in $minutes minutes" },
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{ ceiling: 86400, text: "in $hours hours" },
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{ ceiling: 2629744, text: "in $days days" },
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{ ceiling: 31556926, text: "in $months months" },
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{ ceiling: null, text: "in $years years" }
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]
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};
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//Time units must be be ordered largest -> smallest
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time_units = time_units || [
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[31556926, 'years'],
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[2629744, 'months'],
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[86400, 'days'],
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[3600, 'hours'],
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[60, 'minutes'],
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[1, 'seconds']
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];
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date = new Date(date);
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ref_date = ref_date ? new Date(ref_date) : new Date();
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var seconds_difference = (ref_date - date) / 1000;
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var tense = 'past';
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if (seconds_difference < 0) {
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tense = 'future';
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seconds_difference = 0-seconds_difference;
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}
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function get_format() {
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for (var i=0; i<date_formats[tense].length; i++) {
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if (date_formats[tense][i].ceiling == null || seconds_difference <= date_formats[tense][i].ceiling) {
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return date_formats[tense][i];
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}
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}
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return null;
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}
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function get_time_breakdown() {
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var seconds = seconds_difference;
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var breakdown = {};
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for(var i=0; i<time_units.length; i++) {
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var occurences_of_unit = Math.floor(seconds / time_units[i][0]);
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seconds = seconds - (time_units[i][0] * occurences_of_unit);
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breakdown[time_units[i][1]] = occurences_of_unit;
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}
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return breakdown;
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}
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function render_date(date_format) {
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var breakdown = get_time_breakdown();
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var time_ago_text = date_format.text.replace(/\$(\w+)/g, function() {
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return breakdown[arguments[1]];
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});
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return depluralize_time_ago_text(time_ago_text, breakdown);
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}
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function depluralize_time_ago_text(time_ago_text, breakdown) {
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for(var i in breakdown) {
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if (breakdown[i] == 1) {
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var regexp = new RegExp("\\b"+i+"\\b");
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time_ago_text = time_ago_text.replace(regexp, function() {
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return arguments[0].replace(/s\b/g, '');
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});
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}
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}
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return time_ago_text;
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}
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return render_date(get_format());
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} |