From 3af6d9131f6dfc138856d718ec96626344095ec8 Mon Sep 17 00:00:00 2001
From: Jieiku
Date: Mon, 22 May 2023 23:24:44 -0700
Subject: Optimizations and Fixes
---
static/search.js | 369 -------------------------------------------------------
1 file changed, 369 deletions(-)
delete mode 100644 static/search.js
(limited to 'static/search.js')
diff --git a/static/search.js b/static/search.js
deleted file mode 100644
index da46986..0000000
--- a/static/search.js
+++ /dev/null
@@ -1,369 +0,0 @@
-// in page results when press enter or click search icon from search box
-function closeSearchNow() {
- const main = document.querySelector("main");
- main.innerHTML = window.main
-}
-
-function goSearchNow() {
- const main = document.querySelector("main");
- if (!window.main) {
- window.main = main.innerHTML
- };
- var results = document.getElementById("suggestions");// suggestions div generated by search box
-
- var ResultsClone = results.cloneNode(true);// make a clone of the results, so that we can alter it
- ResultsClone.id = "results";// alter the id of our clone, so that we can apply different css style
-
- var headerDiv = document.createElement("div");// create a div element
-
- var headerContent = '");// header to use at top of results page
-
- headerDiv.innerHTML = headerContent;// document element div (headerDiv), set the inner contents to our header html (headerContent)
-
- ResultsClone.insertBefore(headerDiv, ResultsClone.firstChild);//insert our header div at the top of the page
-
- main.innerHTML = ResultsClone.outerHTML;//display ResultsClone.outerHTML as the page
- results.innerHTML = "";// clear the suggestions div popup
- document.getElementById("searchinput").value = "";// clear the search input box
- document.body.contains(document.closeSearch) && (document.closeSearch.onsubmit = function() { closeSearchNow() })
- return false
-}
-
-/* Close search suggestion popup list */
-function closeAllLists(elmnt) {
- var suggestions = document.getElementById("suggestions");
- while (suggestions.firstChild) {
- suggestions.removeChild(suggestions.firstChild);
- }
-}
-
-function inputFocus(e) {
-
- if (e.keyCode === 191//forward slash
- && document.activeElement.tagName !== "INPUT"
- && document.activeElement.tagName !== "TEXTAREA") {
- e.preventDefault();
- searchinput.focus();
- suggestions.classList.remove('d-none');
- }
-
- if (e.keyCode === 27 ) {//escape
- searchinput.blur();
- suggestions.classList.add('d-none');
- closeAllLists();
- }
-
- const focusableSuggestions= suggestions.querySelectorAll('a');
- if (suggestions.classList.contains('d-none')
- || focusableSuggestions.length === 0) {
- return;
- }
- const focusable= [...focusableSuggestions];
- const index = focusable.indexOf(document.activeElement);
-
- let nextIndex = 0;
-
- if (e.keyCode === 38) {//up arrow
- e.preventDefault();
- nextIndex= index > 0 ? index-1 : 0;
- focusableSuggestions[nextIndex].focus();
- }
- else if (e.keyCode === 40) {//down arrow
- e.preventDefault();
- nextIndex= index+1 < focusable.length ? index+1 : index;
- focusableSuggestions[nextIndex].focus();
- }
-
-}
-
-// Get substring by bytes
-// If using JavaScript inline substring method, it will return error codes
-// Source: https://www.52pojie.cn/thread-1059814-1-1.html
-function substringByByte(str, maxLength) {
- var result = "";
- var flag = false;
- var len = 0;
- var length = 0;
- var length2 = 0;
- for (var i = 0; i < str.length; i++) {
- var code = str.codePointAt(i).toString(16);
- if (code.length > 4) {
- i++;
- if ((i + 1) < str.length) {
- flag = str.codePointAt(i + 1).toString(16) == "200d";
- }
- }
- if (flag) {
- len += getByteByHex(code);
- if (i == str.length - 1) {
- length += len;
- if (length <= maxLength) {
- result += str.substr(length2, i - length2 + 1);
- } else {
- break
- }
- }
- } else {
- if (len != 0) {
- length += len;
- length += getByteByHex(code);
- if (length <= maxLength) {
- result += str.substr(length2, i - length2 + 1);
- length2 = i + 1;
- } else {
- break
- }
- len = 0;
- continue;
- }
- length += getByteByHex(code);
- if (length <= maxLength) {
- if (code.length <= 4) {
- result += str[i]
- } else {
- result += str[i - 1] + str[i]
- }
- length2 = i + 1;
- } else {
- break
- }
- }
- }
- return result;
-}
-
-// Get the string bytes from binary
-function getByteByBinary(binaryCode) {
- // Binary system, starts with `0b` in ES6
- // Octal number system, starts with `0` in ES5 and starts with `0o` in ES6
- // Hexadecimal, starts with `0x` in both ES5 and ES6
- var byteLengthDatas = [0, 1, 2, 3, 4];
- var len = byteLengthDatas[Math.ceil(binaryCode.length / 8)];
- return len;
-}
-
-// Get the string bytes from hexadecimal
-function getByteByHex(hexCode) {
- return getByteByBinary(parseInt(hexCode, 16).toString(2));
-}
-
-window.onload = function() {
- if (document.body.contains(document.goSearch)) {
- document.goSearch.onsubmit = function() { return goSearchNow() };
- var suggestions = document.getElementById("suggestions");
- var searchinput = document.getElementById("searchinput");
- document.addEventListener("keydown", inputFocus);
- document.addEventListener("click", function(event) {suggestions.contains(event.target) || suggestions.classList.add("d-none")});
-
- /*
- Source:
- - https://github.com/nextapps-de/flexsearch#index-documents-field-search
- - https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
- - http://elasticlunr.com/
- - https://github.com/getzola/zola/blob/master/docs/static/search.js
- - https://github.com/aaranxu/adidoks/blob/main/static/js/search.js
- */
- (function(){
- var lang = document.documentElement.getAttribute("lang");
- var langOnly = lang.substring(0, 2);
- var baseUrl = document.querySelector("meta[name='base']").getAttribute("content");
- if (baseUrl.slice(-1) == "/") {
- baseUrl = baseUrl.slice(0, -1);
- }
-
- var index;
- searchinput.addEventListener('input', show_results, true);
- suggestions.addEventListener('click', accept_suggestion, true);
-
- async function show_results(){
- var initIndex = async function () {
- if (index === undefined) {
- index = fetch(baseUrl + '/search_index.' + langOnly + '.json')
- .then(
- async function(response) {
- return await elasticlunr.Index.load(await response.json());
- }
- );
- }
- let res = await index;
- return res;
- }
- var value = this.value.trim();
- var options = {
- bool: "OR",
- fields: {
- title: {boost: 2},
- body: {boost: 1},
- }
- };
- //var results = index.search(value, options);
- var results = (await initIndex()).search(value, options);
-
- var entry, childs = suggestions.childNodes;
- var i = 0, len = results.length;
- var items = value.split(/\s+/);
- suggestions.classList.remove('d-none');
-
- results.forEach(function(page) {
- if (page.doc.body !== '') {
- entry = document.createElement('div');
-
- entry.innerHTML = '';
-
- a = entry.querySelector('a'),
- t = entry.querySelector('span:first-child'),
- d = entry.querySelector('span:nth-child(2)');
- a.href = page.ref;
- t.textContent = page.doc.title;
- d.innerHTML = makeTeaser(page.doc.body, items);
-
- suggestions.appendChild(entry);
- }
- });
-
- while(childs.length > len){
- suggestions.removeChild(childs[i])
- }
-
- }
-
- function accept_suggestion(){
-
- while(suggestions.lastChild){
-
- suggestions.removeChild(suggestions.lastChild);
- }
-
- return false;
- }
-
- /* Taken from mdbook
- // 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 .
- */
- function makeTeaser(body, terms) {
- var TERM_WEIGHT = 40;
- var NORMAL_WORD_WEIGHT = 2;
- var FIRST_WORD_WEIGHT = 8;
- var TEASER_MAX_WORDS = 30;
-
- var stemmedTerms = terms.map(function (w) {
- return elasticlunr.stemmer(w.toLowerCase());
- });
- var termFound = false;
- var index = 0;
- var weighted = []; // contains elements of ["word", weight, index_in_document]
-
- // split in sentences, then words
- var sentences = body.toLowerCase().split(". ");
- for (var i in sentences) {
- var words = sentences[i].split(/[\s\n]/);
- var value = FIRST_WORD_WEIGHT;
- for (var j in words) {
-
- var word = words[j];
-
- if (word.length > 0) {
- for (var k in stemmedTerms) {
- if (elasticlunr.stemmer(word).startsWith(stemmedTerms[k])) {
- value = TERM_WEIGHT;
- termFound = true;
- }
- }
- weighted.push([word, value, index]);
- value = NORMAL_WORD_WEIGHT;
- }
-
- 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) {
- if (body.length !== undefined && body.length > TEASER_MAX_WORDS * 10) {
- return body.substring(0, TEASER_MAX_WORDS * 10) + '...';
- } else {
- return body;
- }
- }
-
- var windowWeights = [];
- var windowSize = Math.min(weighted.length, TEASER_MAX_WORDS);
- // We add a window with all the weights first
- var curSum = 0;
- for (var i = 0; i < windowSize; i++) {
- curSum += weighted[i][1];
- }
- windowWeights.push(curSum);
-
- for (var i = 0; i < weighted.length - windowSize; i++) {
- curSum -= weighted[i][1];
- curSum += weighted[i + windowSize][1];
- windowWeights.push(curSum);
- }
-
- // If we didn't find the term, just pick the first window
- var maxSumIndex = 0;
- if (termFound) {
- var maxFound = 0;
- // backwards
- for (var i = windowWeights.length - 1; i >= 0; i--) {
- if (windowWeights[i] > maxFound) {
- maxFound = windowWeights[i];
- maxSumIndex = i;
- }
- }
- }
-
- var teaser = [];
- var startIndex = weighted[maxSumIndex][2];
- for (var i = maxSumIndex; i < maxSumIndex + windowSize; i++) {
- var word = weighted[i];
- if (startIndex < word[2]) {
- // missing text from index to start of `word`
- teaser.push(body.substring(startIndex, word[2]));
- startIndex = word[2];
- }
-
- // add around search terms
- if (word[1] === TERM_WEIGHT) {
- teaser.push("");
- }
-
- startIndex = word[2] + word[0].length;
- // Check the string is ascii characters or not
- var re = /^[\x00-\xff]+$/
- if (word[1] !== TERM_WEIGHT && word[0].length >= 12 && !re.test(word[0])) {
- // If the string's length is too long, it maybe a Chinese/Japance/Korean article
- // if using substring method directly, it may occur error codes on emoji chars
- var strBefor = body.substring(word[2], startIndex);
- var strAfter = substringByByte(strBefor, 12);
- teaser.push(strAfter);
- } else {
- teaser.push(body.substring(word[2], startIndex));
- }
-
- if (word[1] === TERM_WEIGHT) {
- teaser.push("");
- }
- }
- teaser.push("…");
- return teaser.join("");
- }
- document.goSearch.onsubmit = function() { return goSearchNow() };
- }());
- }
-};
-
-
-
-
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