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add search support

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This commit is contained in:
jackyzha0 2021-08-27 14:08:11 -04:00
parent a0ff5ec48c
commit 1c851271ea
10 changed files with 367 additions and 60 deletions
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9
layouts/_default/single.html
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@ -3,11 +3,16 @@
{{ partial "head.html" . }}
<body>
{{partial "search.html" .}}
<div class="singlePage">
<!-- Begin actual content -->
{{partial "darkmode.html" .}}
<article>
<header>
{{if .Title}}<h1>{{ .Title }}</h1>{{end}}
<svg tabindex="0" id="search-icon" aria-labelledby="title desc" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 19.9 19.7"><title id="title">Search Icon</title><desc id="desc">Icon to open search</desc><g class="search-path" fill="none"><path stroke-linecap="square" d="M18.5 18.3l-5.4-5.4"/><circle cx="8" cy="8" r="7"/></g></svg>
<div class="spacer"></div>
{{partial "darkmode.html" .}}
</header>
<article>
{{if $.Site.Data.config.enableToc}}
<aside class="mainTOC">
<h3>Table of Contents</h3>

3
layouts/partials/darkmode.html
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@ -1,12 +1,11 @@
<div class='darkmode'>
<input class='toggle' id='darkmode-toggle' type='checkbox' tabindex="-1">
<label id="toggle-label-light" for='darkmode-toggle' tabindex="-1">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="dayIcon" x="0px" y="0px" viewBox="0 0 35 35" style="enable-background:new 0 0 35 35;" xml:space="preserve">
<title>Light Mode</title>
<path d="M6,17.5C6,16.672,5.328,16,4.5,16h-3C0.672,16,0,16.672,0,17.5 S0.672,19,1.5,19h3C5.328,19,6,18.328,6,17.5z M7.5,26c-0.414,0-0.789,0.168-1.061,0.439l-2,2C4.168,28.711,4,29.086,4,29.5 C4,30.328,4.671,31,5.5,31c0.414,0,0.789-0.168,1.06-0.44l2-2C8.832,28.289,9,27.914,9,27.5C9,26.672,8.329,26,7.5,26z M17.5,6 C18.329,6,19,5.328,19,4.5v-3C19,0.672,18.329,0,17.5,0S16,0.672,16,1.5v3C16,5.328,16.671,6,17.5,6z M27.5,9 c0.414,0,0.789-0.168,1.06-0.439l2-2C30.832,6.289,31,5.914,31,5.5C31,4.672,30.329,4,29.5,4c-0.414,0-0.789,0.168-1.061,0.44 l-2,2C26.168,6.711,26,7.086,26,7.5C26,8.328,26.671,9,27.5,9z M6.439,8.561C6.711,8.832,7.086,9,7.5,9C8.328,9,9,8.328,9,7.5 c0-0.414-0.168-0.789-0.439-1.061l-2-2C6.289,4.168,5.914,4,5.5,4C4.672,4,4,4.672,4,5.5c0,0.414,0.168,0.789,0.439,1.06 L6.439,8.561z M33.5,16h-3c-0.828,0-1.5,0.672-1.5,1.5s0.672,1.5,1.5,1.5h3c0.828,0,1.5-0.672,1.5-1.5S34.328,16,33.5,16z M28.561,26.439C28.289,26.168,27.914,26,27.5,26c-0.828,0-1.5,0.672-1.5,1.5c0,0.414,0.168,0.789,0.439,1.06l2,2 C28.711,30.832,29.086,31,29.5,31c0.828,0,1.5-0.672,1.5-1.5c0-0.414-0.168-0.789-0.439-1.061L28.561,26.439z M17.5,29 c-0.829,0-1.5,0.672-1.5,1.5v3c0,0.828,0.671,1.5,1.5,1.5s1.5-0.672,1.5-1.5v-3C19,29.672,18.329,29,17.5,29z M17.5,7 C11.71,7,7,11.71,7,17.5S11.71,28,17.5,28S28,23.29,28,17.5S23.29,7,17.5,7z M17.5,25c-4.136,0-7.5-3.364-7.5-7.5 c0-4.136,3.364-7.5,7.5-7.5c4.136,0,7.5,3.364,7.5,7.5C25,21.636,21.636,25,17.5,25z" />
</svg>
</label>
<input class='toggle' id='darkmode-toggle' type='checkbox' tabindex="-1">
<label class='toggle-button' for='darkmode-toggle'></label>
<label id="toggle-label-dark" for='darkmode-toggle' tabindex="-1">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="nightIcon" x="0px" y="0px" viewBox="0 0 100 100" style="enable-background='new 0 0 100 100'" xml:space="preserve">
<title>Dark Mode</title>

0
layouts/partials/header.html
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208
layouts/partials/search.html Normal file
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@ -0,0 +1,208 @@
<div id="search-container">
<div>
<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, "$1")
.replace(/\n{2,}/g, "\n\n");
} catch (e) {
console.error(e);
return markdown;
}
return output;
};
</script>
<script>
const contentIndex = new FlexSearch.Worker({
tokenize: "strict",
charset: "latin:advanced",
context: true,
depth: 3,
cache: 10,
suggest: true,
})
const scrapedContent = {{$.Site.Data.contentIndex}}
for (const [key, value] of Object.entries(scrapedContent)) {
contentIndex.add(key, value.content)
}
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']
const highlight = (content, term) => {
const highlightWindow = 15
const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
const splitText = content.split(/\s+/).filter(t => t !== "")
const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().includes(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 md = content.split("---")[2]
const text = removeMarkdown(md)
const resultTitle = highlight(title, term)
const resultText = highlight(text, term)
return `<div class="result-card" id="${url}">
<h3>${resultTitle}</h3>
<p>${resultText}</p>
</div>`
}
const source = document.getElementById('search-bar')
const results = document.getElementById("results-container")
source.addEventListener('input', (e) => {
const term = e.target.value
contentIndex.search(term, {
limit: 5,
depth: 3,
suggest: true,
}).then(searchResults => {
const resultIds = [...new Set(searchResults)]
const finalResults = resultIds.map(id => ({
url: id,
title: scrapedContent[id].title,
content: scrapedContent[id].content
}))
// display
if (finalResults.length === 0) {
results.innerHTML = `<div class="result-card">
<p>No results.</p>
</div>`
} else {
results.innerHTML = finalResults
.map(result => resultToHTML({
...result,
term,
}))
.join("\n")
const anchors = document.getElementsByClassName("result-card");
[...anchors].forEach(anchor => {
anchor.onclick = () => {
window.location.href = `${anchor.id}#:~:text=${encodeURIComponent(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()
})
})
</script>