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-rw-r--r--assets/javascript/count.js254
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diff --git a/assets/javascript/count.js b/assets/javascript/count.js
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-// GoatCounter: https://www.goatcounter.com
-// This file is released under the ISC license: https://opensource.org/licenses/ISC
-;(function() {
- 'use strict';
-
- if (window.goatcounter && window.goatcounter.vars) // Compatibility with very old version; do not use.
- window.goatcounter = window.goatcounter.vars
- else
- window.goatcounter = window.goatcounter || {}
-
- // Load settings from data-goatcounter-settings.
- var s = document.querySelector('script[data-goatcounter]')
- if (s && s.dataset.goatcounterSettings) {
- try { var set = JSON.parse(s.dataset.goatcounterSettings) }
- catch (err) { console.error('invalid JSON in data-goatcounter-settings: ' + err) }
- for (var k in set)
- if (['no_onload', 'no_events', 'allow_local', 'allow_frame', 'path', 'title', 'referrer', 'event'].indexOf(k) > -1)
- window.goatcounter[k] = set[k]
- }
-
- var enc = encodeURIComponent
-
- // Get all data we're going to send off to the counter endpoint.
- var get_data = function(vars) {
- var data = {
- p: (vars.path === undefined ? goatcounter.path : vars.path),
- r: (vars.referrer === undefined ? goatcounter.referrer : vars.referrer),
- t: (vars.title === undefined ? goatcounter.title : vars.title),
- e: !!(vars.event || goatcounter.event),
- s: [window.screen.width, window.screen.height, (window.devicePixelRatio || 1)],
- b: is_bot(),
- q: location.search,
- }
-
- var rcb, pcb, tcb // Save callbacks to apply later.
- if (typeof(data.r) === 'function') rcb = data.r
- if (typeof(data.t) === 'function') tcb = data.t
- if (typeof(data.p) === 'function') pcb = data.p
-
- if (is_empty(data.r)) data.r = document.referrer
- if (is_empty(data.t)) data.t = document.title
- if (is_empty(data.p)) data.p = get_path()
-
- if (rcb) data.r = rcb(data.r)
- if (tcb) data.t = tcb(data.t)
- if (pcb) data.p = pcb(data.p)
- return data
- }
-
- // Check if a value is "empty" for the purpose of get_data().
- var is_empty = function(v) { return v === null || v === undefined || typeof(v) === 'function' }
-
- // See if this looks like a bot; there is some additional filtering on the
- // backend, but these properties can't be fetched from there.
- var is_bot = function() {
- // Headless browsers are probably a bot.
- var w = window, d = document
- if (w.callPhantom || w._phantom || w.phantom)
- return 150
- if (w.__nightmare)
- return 151
- if (d.__selenium_unwrapped || d.__webdriver_evaluate || d.__driver_evaluate)
- return 152
- if (navigator.webdriver)
- return 153
- return 0
- }
-
- // Object to urlencoded string, starting with a ?.
- var urlencode = function(obj) {
- var p = []
- for (var k in obj)
- if (obj[k] !== '' && obj[k] !== null && obj[k] !== undefined && obj[k] !== false)
- p.push(enc(k) + '=' + enc(obj[k]))
- return '?' + p.join('&')
- }
-
- // Show a warning in the console.
- var warn = function(msg) {
- if (console && 'warn' in console)
- console.warn('goatcounter: ' + msg)
- }
-
- // Get the endpoint to send requests to.
- var get_endpoint = function() {
- var s = document.querySelector('script[data-goatcounter]')
- if (s && s.dataset.goatcounter)
- return s.dataset.goatcounter
- return (goatcounter.endpoint || window.counter) // counter is for compat; don't use.
- }
-
- // Get current path.
- var get_path = function() {
- var loc = location,
- c = document.querySelector('link[rel="canonical"][href]')
- if (c) { // May be relative or point to different domain.
- var a = document.createElement('a')
- a.href = c.href
- if (a.hostname.replace(/^www\./, '') === location.hostname.replace(/^www\./, ''))
- loc = a
- }
- return (loc.pathname + loc.search) || '/'
- }
-
- // Run function after DOM is loaded.
- var on_load = function(f) {
- if (document.body === null)
- document.addEventListener('DOMContentLoaded', function() { f() }, false)
- else
- f()
- }
-
- // Filter some requests that we (probably) don't want to count.
- goatcounter.filter = function() {
- if ('visibilityState' in document && document.visibilityState === 'prerender')
- return 'visibilityState'
- if (!goatcounter.allow_frame && location !== parent.location)
- return 'frame'
- if (!goatcounter.allow_local && location.hostname.match(/(localhost$|^127\.|^10\.|^172\.(1[6-9]|2[0-9]|3[0-1])\.|^192\.168\.|^0\.0\.0\.0$)/))
- return 'localhost'
- if (!goatcounter.allow_local && location.protocol === 'file:')
- return 'localfile'
- if (localStorage && localStorage.getItem('skipgc') === 't')
- return 'disabled with #toggle-goatcounter'
- return false
- }
-
- // Get URL to send to GoatCounter.
- window.goatcounter.url = function(vars) {
- var data = get_data(vars || {})
- if (data.p === null) // null from user callback.
- return
- data.rnd = Math.random().toString(36).substr(2, 5) // Browsers don't always listen to Cache-Control.
-
- var endpoint = get_endpoint()
- if (!endpoint)
- return warn('no endpoint found')
-
- return endpoint + urlencode(data)
- }
-
- // Count a hit.
- window.goatcounter.count = function(vars) {
- var f = goatcounter.filter()
- if (f)
- return warn('not counting because of: ' + f)
- var url = goatcounter.url(vars)
- if (!url)
- return warn('not counting because path callback returned null')
- navigator.sendBeacon(url)
- }
-
- // Get a query parameter.
- window.goatcounter.get_query = function(name) {
- var s = location.search.substr(1).split('&')
- for (var i = 0; i < s.length; i++)
- if (s[i].toLowerCase().indexOf(name.toLowerCase() + '=') === 0)
- return s[i].substr(name.length + 1)
- }
-
- // Track click events.
- window.goatcounter.bind_events = function() {
- if (!document.querySelectorAll) // Just in case someone uses an ancient browser.
- return
-
- var send = function(elem) {
- return function() {
- goatcounter.count({
- event: true,
- path: (elem.dataset.goatcounterClick || elem.name || elem.id || ''),
- title: (elem.dataset.goatcounterTitle || elem.title || (elem.innerHTML || '').substr(0, 200) || ''),
- referrer: (elem.dataset.goatcounterReferrer || elem.dataset.goatcounterReferral || ''),
- })
- }
- }
-
- Array.prototype.slice.call(document.querySelectorAll("*[data-goatcounter-click]")).forEach(function(elem) {
- if (elem.dataset.goatcounterBound)
- return
- var f = send(elem)
- elem.addEventListener('click', f, false)
- elem.addEventListener('auxclick', f, false) // Middle click.
- elem.dataset.goatcounterBound = 'true'
- })
- }
-
- // Add a "visitor counter" frame or image.
- window.goatcounter.visit_count = function(opt) {
- on_load(function() {
- opt = opt || {}
- opt.type = opt.type || 'html'
- opt.append = opt.append || 'body'
- opt.path = opt.path || get_path()
- opt.attr = opt.attr || {width: '200', height: (opt.no_branding ? '60' : '80')}
-
- opt.attr['src'] = get_endpoint() + 'er/' + enc(opt.path) + '.' + enc(opt.type) + '?'
- if (opt.no_branding) opt.attr['src'] += '&no_branding=1'
- if (opt.style) opt.attr['src'] += '&style=' + enc(opt.style)
- if (opt.start) opt.attr['src'] += '&start=' + enc(opt.start)
- if (opt.end) opt.attr['src'] += '&end=' + enc(opt.end)
-
- var tag = {png: 'img', svg: 'img', html: 'iframe'}[opt.type]
- if (!tag)
- return warn('visit_count: unknown type: ' + opt.type)
-
- if (opt.type === 'html') {
- opt.attr['frameborder'] = '0'
- opt.attr['scrolling'] = 'no'
- }
-
- var d = document.createElement(tag)
- for (var k in opt.attr)
- d.setAttribute(k, opt.attr[k])
-
- var p = document.querySelector(opt.append)
- if (!p)
- return warn('visit_count: append not found: ' + opt.append)
- p.appendChild(d)
- })
- }
-
- // Make it easy to skip your own views.
- if (location.hash === '#toggle-goatcounter') {
- if (localStorage.getItem('skipgc') === 't') {
- localStorage.removeItem('skipgc', 't')
- alert('GoatCounter tracking is now ENABLED in this browser.')
- }
- else {
- localStorage.setItem('skipgc', 't')
- alert('GoatCounter tracking is now DISABLED in this browser until ' + location + ' is loaded again.')
- }
- }
-
- if (!goatcounter.no_onload)
- on_load(function() {
- // 1. Page is visible, count request.
- // 2. Page is not yet visible; wait until it switches to 'visible' and count.
- // See #487
- if (!('visibilityState' in document) || document.visibilityState === 'visible')
- goatcounter.count()
- else {
- var f = function(e) {
- if (document.visibilityState !== 'visible')
- return
- document.removeEventListener('visibilitychange', f)
- goatcounter.count()
- }
- document.addEventListener('visibilitychange', f)
- }
-
- if (!goatcounter.no_events)
- goatcounter.bind_events()
- })
-})();
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