search improvements
This commit is contained in:
Jacky Zhao
parent
299533a4f4
commit
6fd19069de
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@ -1,208 +1,219 @@
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<div id="search-container">
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<div>
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<input autocomplete="off" id="search-bar" name="search" type="text" aria-label="Search" placeholder="Search for something...">
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<div id="search-space">
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<input autoComplete="off" id="search-bar" name="search" type="text" aria-label="Search"
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placeholder="Search for something...">
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<div id="results-container">
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</div>
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</div>
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</div>
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<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.7.2/dist/flexsearch.bundle.js"></script>
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<script>
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// code from https://github.com/danestves/markdown-to-text
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const removeMarkdown = (
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markdown,
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options = {
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listUnicodeChar: false,
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stripListLeaders: true,
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gfm: true,
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useImgAltText: false,
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preserveLinks: false,
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}
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) => {
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let output = markdown || "";
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output = output.replace(/^(-\s*?|\*\s*?|_\s*?){3,}\s*$/gm, "");
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// code from https://github.com/danestves/markdown-to-text
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const removeMarkdown = (
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markdown,
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options = {
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listUnicodeChar: false,
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stripListLeaders: true,
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gfm: true,
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useImgAltText: false,
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preserveLinks: false,
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}
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) => {
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let output = markdown || "";
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output = output.replace(/^(-\s*?|\*\s*?|_\s*?){3,}\s*$/gm, "");
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try {
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if (options.stripListLeaders) {
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if (options.listUnicodeChar)
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output = output.replace(
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/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm,
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options.listUnicodeChar + " $1"
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);
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else output = output.replace(/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, "$1");
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}
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if (options.gfm) {
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output = output
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.replace(/\n={2,}/g, "\n")
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.replace(/~{3}.*\n/g, "")
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.replace(/~~/g, "")
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.replace(/`{3}.*\n/g, "");
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}
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if(options.preserveLinks) {
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output = output.replace(/\[(.*?)\][\[\(](.*?)[\]\)]/g, "$1 ($2)")
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}
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output = output
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.replace(/<[^>]*>/g, "")
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.replace(/^[=\-]{2,}\s*$/g, "")
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.replace(/\[\^.+?\](\: .*?$)?/g, "")
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.replace(/\s{0,2}\[.*?\]: .*?$/g, "")
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.replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
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.replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "$1")
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.replace(/^\s{0,3}>\s?/g, "")
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.replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
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.replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
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.replace(
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/^(\n)?\s{0,}#{1,6}\s+| {0,}(\n)?\s{0,}#{0,} {0,}(\n)?\s{0,}$/gm,
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"$1$2$3"
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)
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.replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
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.replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
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.replace(/(`{3,})(.*?)\1/gm, "$2")
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.replace(/`(.+?)`/g, "$1")
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.replace(/\n{2,}/g, "\n\n");
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} catch (e) {
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console.error(e);
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return markdown;
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}
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return output;
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};
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try {
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if (options.stripListLeaders) {
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if (options.listUnicodeChar)
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output = output.replace(
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/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm,
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options.listUnicodeChar + " $1"
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);
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else output = output.replace(/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, "$1");
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}
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if (options.gfm) {
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output = output
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.replace(/\n={2,}/g, "\n")
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.replace(/~{3}.*\n/g, "")
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.replace(/~~/g, "")
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.replace(/`{3}.*\n/g, "");
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}
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if (options.preserveLinks) {
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output = output.replace(/\[(.*?)\][\[\(](.*?)[\]\)]/g, "$1 ($2)")
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}
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output = output
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.replace(/<[^>]*>/g, "")
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.replace(/^[=\-]{2,}\s*$/g, "")
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.replace(/\[\^.+?\](\: .*?$)?/g, "")
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.replace(/\s{0,2}\[.*?\]: .*?$/g, "")
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.replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
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.replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "$1")
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.replace(/^\s{0,3}>\s?/g, "")
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.replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
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.replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
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.replace(
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/^(\n)?\s{0,}#{1,6}\s+| {0,}(\n)?\s{0,}#{0,} {0,}(\n)?\s{0,}$/gm,
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"$1$2$3"
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)
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.replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
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.replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
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.replace(/(`{3,})(.*?)\1/gm, "$2")
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.replace(/`(.+?)`/g, "$1")
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.replace(/\n{2,}/g, "\n\n");
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} catch (e) {
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console.error(e);
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return markdown;
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}
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return output;
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};
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</script>
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<script>
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const contentIndex = new FlexSearch.Worker({
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tokenize: "strict",
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charset: "latin:advanced",
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context: true,
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depth: 3,
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cache: 10,
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suggest: true,
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})
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const contentIndex = new FlexSearch.Worker({
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tokenize: "reverse",
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charset: "latin:extra",
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suggest: true,
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})
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const scrapedContent = {{$.Site.Data.contentIndex}}
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for (const [key, value] of Object.entries(scrapedContent)) {
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contentIndex.add(key, value.content)
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}
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const stopwords = ['i','me','my','myself','we','our','ours','ourselves','you','your','yours','yourself','yourselves','he','him','his','himself','she','her','hers','herself','it','its','itself','they','them','their','theirs','themselves','what','which','who','whom','this','that','these','those','am','is','are','was','were','be','been','being','have','has','had','having','do','does','did','doing','a','an','the','and','but','if','or','because','as','until','while','of','at','by','for','with','about','against','between','into','through','during','before','after','above','below','to','from','up','down','in','out','on','off','over','under','again','further','then','once','here','there','when','where','why','how','all','any','both','each','few','more','most','other','some','such','no','nor','not','only','own','same','so','than','too','very','s','t','can','will','just','don','should','now']
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const highlight = (content, term) => {
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const highlightWindow = 15
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const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
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const splitText = content.split(/\s+/).filter(t => t !== "")
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const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().includes(term.toLowerCase()))
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const occurrencesIndices = splitText
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.map(includesCheck)
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// calculate best index
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let bestSum = 0
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let bestIndex = 0
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for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
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const window = occurrencesIndices.slice(i, i + highlightWindow)
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const windowSum = window.reduce((total, cur) => total + cur, 0)
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if (windowSum > bestSum) {
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bestSum = windowSum
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bestIndex = i
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}
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const scrapedContent = {{$.Site.Data.contentIndex}}
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for (const [key, value] of Object.entries(scrapedContent)) {
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contentIndex.add(key, value.content)
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}
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const startIndex = Math.max(bestIndex - highlightWindow, 0)
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const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
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const mappedText = splitText
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.slice(startIndex, endIndex)
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.map(token => {
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if (includesCheck(token)) {
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return `<span class="search-highlight">${token}</span>`
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}
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return token
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})
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.join(" ")
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.replaceAll('</span> <span class="search-highlight">', " ")
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return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
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}
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const highlight = (content, term) => {
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const highlightWindow = 15
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const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
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const splitText = content.split(/\s+/).filter(t => t !== "")
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const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().includes(term.toLowerCase()))
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const resultToHTML = ({url, title, content, term}) => {
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const md = content.split("---")[2]
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const text = removeMarkdown(md)
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const resultTitle = highlight(title, term)
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const resultText = highlight(text, term)
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return `<div class="result-card" id="${url}">
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const occurrencesIndices = splitText
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.map(includesCheck)
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// calculate best index
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let bestSum = 0
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let bestIndex = 0
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for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
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const window = occurrencesIndices.slice(i, i + highlightWindow)
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const windowSum = window.reduce((total, cur) => total + cur, 0)
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if (windowSum >= bestSum) {
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bestSum = windowSum
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bestIndex = i
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}
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}
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const startIndex = Math.max(bestIndex - highlightWindow, 0)
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const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
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const mappedText = splitText
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.slice(startIndex, endIndex)
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.map(token => {
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if (includesCheck(token)) {
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return `<span class="search-highlight">${token}</span>`
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}
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return token
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})
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.join(" ")
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.replaceAll('</span> <span class="search-highlight">', " ")
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return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
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}
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const resultToHTML = ({url, title, content, term}) => {
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const md = content.split("---")[2]
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const text = removeMarkdown(md)
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const resultTitle = highlight(title, term)
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const resultText = highlight(text, term)
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return `<button class="result-card" id="${url}">
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<h3>${resultTitle}</h3>
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<p>${resultText}</p>
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</div>`
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}
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</button>`
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}
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const source = document.getElementById('search-bar')
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const results = document.getElementById("results-container")
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source.addEventListener('input', (e) => {
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const term = e.target.value
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contentIndex.search(term, {
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limit: 5,
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depth: 3,
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suggest: true,
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}).then(searchResults => {
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const resultIds = [...new Set(searchResults)]
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const finalResults = resultIds.map(id => ({
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url: id,
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title: scrapedContent[id].title,
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content: scrapedContent[id].content
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}))
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const source = document.getElementById('search-bar')
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const results = document.getElementById("results-container")
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let term
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source.addEventListener("keyup", (e) => {
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if (e.key === "Enter") {
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const anchor = document.getElementsByClassName("result-card")[0]
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window.location.href = `${anchor.id}#:~:text=${encodeURIComponent(term)}`
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}
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})
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source.addEventListener('input', (e) => {
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term = e.target.value
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contentIndex.search(term, {
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limit: 20,
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depth: 3,
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suggest: true,
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}).then(searchResults => {
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const resultIds = [...new Set(searchResults)]
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const finalResults = resultIds.map(id => ({
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url: id,
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title: scrapedContent[id].title,
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content: scrapedContent[id].content
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}))
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// display
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if (finalResults.length === 0) {
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results.innerHTML = `<div class="result-card">
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// display
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if (finalResults.length === 0) {
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results.innerHTML = `<div class="result-card">
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<p>No results.</p>
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</div>`
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} else {
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results.innerHTML = finalResults
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.map(result => resultToHTML({
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...result,
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term,
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}))
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.join("\n")
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const anchors = document.getElementsByClassName("result-card");
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[...anchors].forEach(anchor => {
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anchor.onclick = () => {
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window.location.href = `${anchor.id}#:~:text=${encodeURIComponent(term)}`
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}
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} else {
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results.innerHTML = finalResults
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.map(result => resultToHTML({
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...result,
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term,
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}))
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.join("\n")
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const anchors = document.getElementsByClassName("result-card");
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[...anchors].forEach(anchor => {
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anchor.onclick = () => {
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window.location.href = `${anchor.id}#:~:text=${encodeURIComponent(term)}`
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}
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})
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}
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})
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}
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})
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})
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const searchContainer = document.getElementById("search-container")
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function openSearch() {
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if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
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source.value = ""
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results.innerHTML = ""
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searchContainer.style.display = "block"
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source.focus()
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} else {
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searchContainer.style.display = "none"
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const searchContainer = document.getElementById("search-container")
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function openSearch() {
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if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
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source.value = ""
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results.innerHTML = ""
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searchContainer.style.display = "block"
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source.focus()
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} else {
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searchContainer.style.display = "none"
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}
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}
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}
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function closeSearch() {
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searchContainer.style.display = "none"
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}
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document.addEventListener('keydown', (event) => {
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if (event.key === "/") {
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event.preventDefault()
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openSearch()
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function closeSearch() {
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searchContainer.style.display = "none"
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}
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if (event.key === "Escape") {
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event.preventDefault()
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closeSearch()
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}
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})
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window.addEventListener('DOMContentLoaded', () => {
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const searchButton = document.getElementById("search-icon")
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searchButton.addEventListener('click', (evt) => {
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openSearch()
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document.addEventListener('keydown', (event) => {
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if (event.key === "/") {
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event.preventDefault()
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openSearch()
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}
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if (event.key === "Escape") {
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event.preventDefault()
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closeSearch()
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}
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})
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searchButton.addEventListener('keydown', (evt) => {
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openSearch()
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window.addEventListener('DOMContentLoaded', () => {
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const searchButton = document.getElementById("search-icon")
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searchButton.addEventListener('click', (evt) => {
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openSearch()
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})
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searchButton.addEventListener('keydown', (evt) => {
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openSearch()
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})
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searchContainer.addEventListener('click', (evt) => {
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closeSearch()
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})
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document.getElementById("search-space").addEventListener('click', (evt) => {
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evt.stopPropagation()
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})
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})
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})
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</script>
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