<div id="search-container"> <div id="search-space"> <input autocomplete="off" id="search-bar" name="search" type="text" aria-label="Search" placeholder="Search for something..."> <div id="results-container"> </div> </div> </div> <script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.7.2/dist/flexsearch.bundle.js"></script> <script> // code from https://github.com/danestves/markdown-to-text const removeMarkdown = ( markdown, options = { listUnicodeChar: false, stripListLeaders: true, gfm: true, useImgAltText: false, preserveLinks: false, } ) => { let output = markdown || ""; output = output.replace(/^(-\s*?|\*\s*?|_\s*?){3,}\s*$/gm, ""); try { if (options.stripListLeaders) { if (options.listUnicodeChar) output = output.replace( /^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, options.listUnicodeChar + " $1" ); else output = output.replace(/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, "$1"); } if (options.gfm) { output = output .replace(/\n={2,}/g, "\n") .replace(/~{3}.*\n/g, "") .replace(/~~/g, "") .replace(/`{3}.*\n/g, ""); } if (options.preserveLinks) { output = output.replace(/\[(.*?)\][\[\(](.*?)[\]\)]/g, "$1 ($2)") } output = output .replace(/<[^>]*>/g, "") .replace(/^[=\-]{2,}\s*$/g, "") .replace(/\[\^.+?\](\: .*?$)?/g, "") .replace(/\s{0,2}\[.*?\]: .*?$/g, "") .replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "") .replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "$1") .replace(/^\s{0,3}>\s?/g, "") .replace(/(^|\n)\s{0,3}>\s?/g, "\n\n") .replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "") .replace( /^(\n)?\s{0,}#{1,6}\s+| {0,}(\n)?\s{0,}#{0,} {0,}(\n)?\s{0,}$/gm, "$1$2$3" ) .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2") .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2") .replace(/(`{3,})(.*?)\1/gm, "$2") .replace(/`(.+?)`/g, "$1") .replace(/\n{2,}/g, "\n\n"); } catch (e) { console.error(e); return markdown; } return output; }; </script> <script> const contentIndex = new FlexSearch.Document({ cache: true, charset: "latin:extra", optimize: true, worker: true, document: { index: [{ field: "content", tokenize: "strict", context: { resolution: 5, depth: 3, bidirectional: true }, suggest: true, }, { field: "title", tokenize: "forward", }] } }) const scrapedContent = {{$.Site.Data.contentIndex}} for (const [key, value] of Object.entries(scrapedContent)) { contentIndex.add({ id: key, title: value.title, content: removeMarkdown(value.content), }) } const highlight = (content, term) => { const highlightWindow = 20 const tokenizedTerm = term.split(/\s+/).filter(t => t !== "") const splitText = content.split(/\s+/).filter(t => t !== "") const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().startsWith(term.toLowerCase())) const occurrencesIndices = splitText .map(includesCheck) // calculate best index let bestSum = 0 let bestIndex = 0 for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) { const window = occurrencesIndices.slice(i, i + highlightWindow) const windowSum = window.reduce((total, cur) => total + cur, 0) if (windowSum >= bestSum) { bestSum = windowSum bestIndex = i } } const startIndex = Math.max(bestIndex - highlightWindow, 0) const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length) const mappedText = splitText .slice(startIndex, endIndex) .map(token => { if (includesCheck(token)) { return `<span class="search-highlight">${token}</span>` } return token }) .join(" ") .replaceAll('</span> <span class="search-highlight">', " ") return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}` } const resultToHTML = ({url, title, content, term}) => { const text = removeMarkdown(content) const resultTitle = highlight(title, term) const resultText = highlight(text, term) return `<button class="result-card" id="${url}"> <h3>${resultTitle}</h3> <p>${resultText}</p> </button>` } const redir = (id, term) => { window.location.href = "{{.Site.BaseURL}}" + `${id}#:~:text=${encodeURIComponent(term)}` } const fetch = id => ({ id, url: id, title: scrapedContent[id].title, content: scrapedContent[id].content }) const source = document.getElementById('search-bar') const results = document.getElementById("results-container") let term source.addEventListener("keyup", (e) => { if (e.key === "Enter") { const anchor = document.getElementsByClassName("result-card")[0] redir(anchor.id, term) } }) source.addEventListener('input', (e) => { term = e.target.value contentIndex.search(term, [ { field: "content", limit: 10, suggest: true, }, { field: "title", limit: 5, } ]).then(searchResults => { const getByField = field => { const results = searchResults.filter(x => x.field === field) if (results.length === 0) { return [] } else { return [...results[0].result] } } const allIds = new Set([...getByField('title'), ...getByField('content')]) const finalResults = [...allIds].map(fetch) // display if (finalResults.length === 0) { results.innerHTML = `<button class="result-card"> <h3>No results.</h3> <p>Try another search term?</p> </button>` } else { results.innerHTML = finalResults .map(result => resultToHTML({ ...result, term, })) .join("\n") const anchors = document.getElementsByClassName("result-card"); [...anchors].forEach(anchor => { anchor.onclick = () => redir(anchor.id, term) }) } }) }) const searchContainer = document.getElementById("search-container") function openSearch() { if (searchContainer.style.display === "none" || searchContainer.style.display === "") { source.value = "" results.innerHTML = "" searchContainer.style.display = "block" source.focus() } else { searchContainer.style.display = "none" } } function closeSearch() { searchContainer.style.display = "none" } document.addEventListener('keydown', (event) => { if (event.key === "/") { event.preventDefault() openSearch() } if (event.key === "Escape") { event.preventDefault() closeSearch() } }) window.addEventListener('DOMContentLoaded', () => { const searchButton = document.getElementById("search-icon") searchButton.addEventListener('click', (evt) => { openSearch() }) searchButton.addEventListener('keydown', (evt) => { openSearch() }) searchContainer.addEventListener('click', (evt) => { closeSearch() }) document.getElementById("search-space").addEventListener('click', (evt) => { evt.stopPropagation() }) }) </script>