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Diffstat (limited to 'book/pt-br/searcher-c2a407aa.js')
| -rw-r--r-- | book/pt-br/searcher-c2a407aa.js | 555 |
1 files changed, 0 insertions, 555 deletions
diff --git a/book/pt-br/searcher-c2a407aa.js b/book/pt-br/searcher-c2a407aa.js deleted file mode 100644 index 2a82935..0000000 --- a/book/pt-br/searcher-c2a407aa.js +++ /dev/null @@ -1,555 +0,0 @@ -'use strict'; - -/* global Mark, elasticlunr, path_to_root */ - -window.search = window.search || {}; -(function search() { - // Search functionality - // - // You can use !hasFocus() to prevent keyhandling in your key - // event handlers while the user is typing their search. - - if (!Mark || !elasticlunr) { - return; - } - - // eslint-disable-next-line max-len - // IE 11 Compatibility from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith - if (!String.prototype.startsWith) { - String.prototype.startsWith = function(search, pos) { - return this.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search; - }; - } - - const search_wrap = document.getElementById('mdbook-search-wrapper'), - searchbar_outer = document.getElementById('mdbook-searchbar-outer'), - searchbar = document.getElementById('mdbook-searchbar'), - searchresults = document.getElementById('mdbook-searchresults'), - searchresults_outer = document.getElementById('mdbook-searchresults-outer'), - searchresults_header = document.getElementById('mdbook-searchresults-header'), - searchicon = document.getElementById('mdbook-search-toggle'), - content = document.getElementById('mdbook-content'), - - // SVG text elements don't render if inside a <mark> tag. - mark_exclude = ['text'], - marker = new Mark(content), - URL_SEARCH_PARAM = 'search', - URL_MARK_PARAM = 'highlight'; - - let current_searchterm = '', - doc_urls = [], - search_options = { - bool: 'AND', - expand: true, - fields: { - title: {boost: 1}, - body: {boost: 1}, - breadcrumbs: {boost: 0}, - }, - }, - searchindex = null, - results_options = { - teaser_word_count: 30, - limit_results: 30, - }, - teaser_count = 0; - - function hasFocus() { - return searchbar === document.activeElement; - } - - function removeChildren(elem) { - while (elem.firstChild) { - elem.removeChild(elem.firstChild); - } - } - - // Helper to parse a url into its building blocks. - function parseURL(url) { - const a = document.createElement('a'); - a.href = url; - return { - source: url, - protocol: a.protocol.replace(':', ''), - host: a.hostname, - port: a.port, - params: (function() { - const ret = {}; - const seg = a.search.replace(/^\?/, '').split('&'); - for (const part of seg) { - if (!part) { - continue; - } - const s = part.split('='); - ret[s[0]] = s[1]; - } - return ret; - })(), - file: (a.pathname.match(/\/([^/?#]+)$/i) || ['', ''])[1], - hash: a.hash.replace('#', ''), - path: a.pathname.replace(/^([^/])/, '/$1'), - }; - } - - // Helper to recreate a url string from its building blocks. - function renderURL(urlobject) { - let url = urlobject.protocol + '://' + urlobject.host; - if (urlobject.port !== '') { - url += ':' + urlobject.port; - } - url += urlobject.path; - let joiner = '?'; - for (const prop in urlobject.params) { - if (Object.prototype.hasOwnProperty.call(urlobject.params, prop)) { - url += joiner + prop + '=' + urlobject.params[prop]; - joiner = '&'; - } - } - if (urlobject.hash !== '') { - url += '#' + urlobject.hash; - } - return url; - } - - // Helper to escape html special chars for displaying the teasers - const escapeHTML = (function() { - const MAP = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - '\'': ''', - }; - const repl = function(c) { - return MAP[c]; - }; - return function(s) { - return s.replace(/[&<>'"]/g, repl); - }; - })(); - - function formatSearchMetric(count, searchterm) { - if (count === 1) { - return count + ' search result for \'' + searchterm + '\':'; - } else if (count === 0) { - return 'No search results for \'' + searchterm + '\'.'; - } else { - return count + ' search results for \'' + searchterm + '\':'; - } - } - - function formatSearchResult(result, searchterms) { - const teaser = makeTeaser(escapeHTML(result.doc.body), searchterms); - teaser_count++; - - // The ?URL_MARK_PARAM= parameter belongs inbetween the page and the #heading-anchor - const url = doc_urls[result.ref].split('#'); - if (url.length === 1) { // no anchor found - url.push(''); - } - - // encodeURIComponent escapes all chars that could allow an XSS except - // for '. Due to that we also manually replace ' with its url-encoded - // representation (%27). - const encoded_search = encodeURIComponent(searchterms.join(' ')).replace(/'/g, '%27'); - - return '<a href="' + path_to_root + url[0] + '?' + URL_MARK_PARAM + '=' + encoded_search - + '#' + url[1] + '" aria-details="mdbook-teaser_' + teaser_count + '">' - + result.doc.breadcrumbs + '</a>' - + '<span class="teaser" id="mdbook-teaser_' + teaser_count - + '" aria-label="Search Result Teaser">' + teaser + '</span>'; - } - - function makeTeaser(body, searchterms) { - // The strategy is as follows: - // First, assign a value to each word in the document: - // Words that correspond to search terms (stemmer aware): 40 - // Normal words: 2 - // First word in a sentence: 8 - // Then use a sliding window with a constant number of words and count the - // sum of the values of the words within the window. Then use the window that got the - // maximum sum. If there are multiple maximas, then get the last one. - // Enclose the terms in <em>. - const stemmed_searchterms = searchterms.map(function(w) { - return elasticlunr.stemmer(w.toLowerCase()); - }); - const searchterm_weight = 40; - const weighted = []; // contains elements of ["word", weight, index_in_document] - // split in sentences, then words - const sentences = body.toLowerCase().split('. '); - let index = 0; - let value = 0; - let searchterm_found = false; - for (const sentenceindex in sentences) { - const words = sentences[sentenceindex].split(' '); - value = 8; - for (const wordindex in words) { - const word = words[wordindex]; - if (word.length > 0) { - for (const searchtermindex in stemmed_searchterms) { - if (elasticlunr.stemmer(word).startsWith( - stemmed_searchterms[searchtermindex]) - ) { - value = searchterm_weight; - searchterm_found = true; - } - } - weighted.push([word, value, index]); - value = 2; - } - index += word.length; - index += 1; // ' ' or '.' if last word in sentence - } - index += 1; // because we split at a two-char boundary '. ' - } - - if (weighted.length === 0) { - return body; - } - - const window_weight = []; - const window_size = Math.min(weighted.length, results_options.teaser_word_count); - - let cur_sum = 0; - for (let wordindex = 0; wordindex < window_size; wordindex++) { - cur_sum += weighted[wordindex][1]; - } - window_weight.push(cur_sum); - for (let wordindex = 0; wordindex < weighted.length - window_size; wordindex++) { - cur_sum -= weighted[wordindex][1]; - cur_sum += weighted[wordindex + window_size][1]; - window_weight.push(cur_sum); - } - - let max_sum_window_index = 0; - if (searchterm_found) { - let max_sum = 0; - // backwards - for (let i = window_weight.length - 1; i >= 0; i--) { - if (window_weight[i] > max_sum) { - max_sum = window_weight[i]; - max_sum_window_index = i; - } - } - } else { - max_sum_window_index = 0; - } - - // add <em/> around searchterms - const teaser_split = []; - index = weighted[max_sum_window_index][2]; - for (let i = max_sum_window_index; i < max_sum_window_index + window_size; i++) { - const word = weighted[i]; - if (index < word[2]) { - // missing text from index to start of `word` - teaser_split.push(body.substring(index, word[2])); - index = word[2]; - } - if (word[1] === searchterm_weight) { - teaser_split.push('<em>'); - } - index = word[2] + word[0].length; - teaser_split.push(body.substring(word[2], index)); - if (word[1] === searchterm_weight) { - teaser_split.push('</em>'); - } - } - - return teaser_split.join(''); - } - - function init(config) { - results_options = config.results_options; - search_options = config.search_options; - doc_urls = config.doc_urls; - searchindex = elasticlunr.Index.load(config.index); - - searchbar_outer.classList.remove('searching'); - - searchbar.focus(); - - const searchterm = searchbar.value.trim(); - if (searchterm !== '') { - searchbar.classList.add('active'); - doSearch(searchterm); - } - } - - function initSearchInteractions(config) { - // Set up events - searchicon.addEventListener('click', () => { - searchIconClickHandler(); - }, false); - searchbar.addEventListener('keyup', () => { - searchbarKeyUpHandler(); - }, false); - document.addEventListener('keydown', e => { - globalKeyHandler(e); - }, false); - // If the user uses the browser buttons, do the same as if a reload happened - window.onpopstate = () => { - doSearchOrMarkFromUrl(); - }; - // Suppress "submit" events so the page doesn't reload when the user presses Enter - document.addEventListener('submit', e => { - e.preventDefault(); - }, false); - - // If reloaded, do the search or mark again, depending on the current url parameters - doSearchOrMarkFromUrl(); - - // Exported functions - config.hasFocus = hasFocus; - } - - initSearchInteractions(window.search); - - function unfocusSearchbar() { - // hacky, but just focusing a div only works once - const tmp = document.createElement('input'); - tmp.setAttribute('style', 'position: absolute; opacity: 0;'); - searchicon.appendChild(tmp); - tmp.focus(); - tmp.remove(); - } - - // On reload or browser history backwards/forwards events, parse the url and do search or mark - function doSearchOrMarkFromUrl() { - // Check current URL for search request - const url = parseURL(window.location.href); - if (Object.prototype.hasOwnProperty.call(url.params, URL_SEARCH_PARAM) - && url.params[URL_SEARCH_PARAM] !== '') { - showSearch(true); - searchbar.value = decodeURIComponent( - (url.params[URL_SEARCH_PARAM] + '').replace(/\+/g, '%20')); - searchbarKeyUpHandler(); // -> doSearch() - } else { - showSearch(false); - } - - if (Object.prototype.hasOwnProperty.call(url.params, URL_MARK_PARAM)) { - const words = decodeURIComponent(url.params[URL_MARK_PARAM]).split(' '); - marker.mark(words, { - exclude: mark_exclude, - }); - - const markers = document.querySelectorAll('mark'); - const hide = () => { - for (let i = 0; i < markers.length; i++) { - markers[i].classList.add('fade-out'); - window.setTimeout(() => { - marker.unmark(); - }, 300); - } - }; - - for (let i = 0; i < markers.length; i++) { - markers[i].addEventListener('click', hide); - } - } - } - - // Eventhandler for keyevents on `document` - function globalKeyHandler(e) { - if (e.altKey || - e.ctrlKey || - e.metaKey || - e.shiftKey || - e.target.type === 'textarea' || - e.target.type === 'text' || - !hasFocus() && /^(?:input|select|textarea)$/i.test(e.target.nodeName) - ) { - return; - } - - if (e.key === 'Escape') { - e.preventDefault(); - searchbar.classList.remove('active'); - setSearchUrlParameters('', - searchbar.value.trim() !== '' ? 'push' : 'replace'); - if (hasFocus()) { - unfocusSearchbar(); - } - showSearch(false); - marker.unmark(); - } else if (!hasFocus() && (e.key === 's' || e.key === '/')) { - e.preventDefault(); - showSearch(true); - window.scrollTo(0, 0); - searchbar.select(); - } else if (hasFocus() && (e.key === 'ArrowDown' - || e.key === 'Enter')) { - e.preventDefault(); - const first = searchresults.firstElementChild; - if (first !== null) { - unfocusSearchbar(); - first.classList.add('focus'); - if (e.key === 'Enter') { - window.location.assign(first.querySelector('a')); - } - } - } else if (!hasFocus() && (e.key === 'ArrowDown' - || e.key === 'ArrowUp' - || e.key === 'Enter')) { - // not `:focus` because browser does annoying scrolling - const focused = searchresults.querySelector('li.focus'); - if (!focused) { - return; - } - e.preventDefault(); - if (e.key === 'ArrowDown') { - const next = focused.nextElementSibling; - if (next) { - focused.classList.remove('focus'); - next.classList.add('focus'); - } - } else if (e.key === 'ArrowUp') { - focused.classList.remove('focus'); - const prev = focused.previousElementSibling; - if (prev) { - prev.classList.add('focus'); - } else { - searchbar.select(); - } - } else { // Enter - window.location.assign(focused.querySelector('a')); - } - } - } - - function loadSearchScript(url, id) { - if (document.getElementById(id)) { - return; - } - searchbar_outer.classList.add('searching'); - - const script = document.createElement('script'); - script.src = url; - script.id = id; - script.onload = () => init(window.search); - script.onerror = error => { - console.error(`Failed to load \`${url}\`: ${error}`); - }; - document.head.append(script); - } - - function showSearch(yes) { - if (yes) { - loadSearchScript( - window.path_to_searchindex_js || - path_to_root + 'searchindex-3eaa3696.js', - 'mdbook-search-index'); - search_wrap.classList.remove('hidden'); - searchicon.setAttribute('aria-expanded', 'true'); - } else { - search_wrap.classList.add('hidden'); - searchicon.setAttribute('aria-expanded', 'false'); - const results = searchresults.children; - for (let i = 0; i < results.length; i++) { - results[i].classList.remove('focus'); - } - } - } - - function showResults(yes) { - if (yes) { - searchresults_outer.classList.remove('hidden'); - } else { - searchresults_outer.classList.add('hidden'); - } - } - - // Eventhandler for search icon - function searchIconClickHandler() { - if (search_wrap.classList.contains('hidden')) { - showSearch(true); - window.scrollTo(0, 0); - searchbar.select(); - } else { - showSearch(false); - } - } - - // Eventhandler for keyevents while the searchbar is focused - function searchbarKeyUpHandler() { - const searchterm = searchbar.value.trim(); - if (searchterm !== '') { - searchbar.classList.add('active'); - doSearch(searchterm); - } else { - searchbar.classList.remove('active'); - showResults(false); - removeChildren(searchresults); - } - - setSearchUrlParameters(searchterm, 'push_if_new_search_else_replace'); - - // Remove marks - marker.unmark(); - } - - // Update current url with ?URL_SEARCH_PARAM= parameter, remove ?URL_MARK_PARAM and - // `#heading-anchor`. `action` can be one of "push", "replace", - // "push_if_new_search_else_replace" and replaces or pushes a new browser history item. - // "push_if_new_search_else_replace" pushes if there is no `?URL_SEARCH_PARAM=abc` yet. - function setSearchUrlParameters(searchterm, action) { - const url = parseURL(window.location.href); - const first_search = !Object.prototype.hasOwnProperty.call(url.params, URL_SEARCH_PARAM); - - if (searchterm !== '' || action === 'push_if_new_search_else_replace') { - url.params[URL_SEARCH_PARAM] = searchterm; - delete url.params[URL_MARK_PARAM]; - url.hash = ''; - } else { - delete url.params[URL_MARK_PARAM]; - delete url.params[URL_SEARCH_PARAM]; - } - // A new search will also add a new history item, so the user can go back - // to the page prior to searching. A updated search term will only replace - // the url. - if (action === 'push' || action === 'push_if_new_search_else_replace' && first_search ) { - history.pushState({}, document.title, renderURL(url)); - } else if (action === 'replace' || - action === 'push_if_new_search_else_replace' && - !first_search - ) { - history.replaceState({}, document.title, renderURL(url)); - } - } - - function doSearch(searchterm) { - // Don't search the same twice - if (current_searchterm === searchterm) { - return; - } - searchbar_outer.classList.add('searching'); - if (searchindex === null) { - return; - } - - current_searchterm = searchterm; - - // Do the actual search - const results = searchindex.search(searchterm, search_options); - const resultcount = Math.min(results.length, results_options.limit_results); - - // Display search metrics - searchresults_header.innerText = formatSearchMetric(resultcount, searchterm); - - // Clear and insert results - const searchterms = searchterm.split(' '); - removeChildren(searchresults); - for (let i = 0; i < resultcount ; i++) { - const resultElem = document.createElement('li'); - resultElem.innerHTML = formatSearchResult(results[i], searchterms); - searchresults.appendChild(resultElem); - } - - // Display results - showResults(true); - searchbar_outer.classList.remove('searching'); - } - - // Exported functions - search.hasFocus = hasFocus; -})(window.search); |