refactor: move search utils to util.js
This commit is contained in:
Jacky Zhao
parent
2d4a986bd7
commit
71488dec88
@ -1,115 +1,4 @@
|
||||
// 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(/(#{1,6})\s+(.+)\1?/g, "<b>$2</b>")
|
||||
.replace(/\s{0,2}\[.*?\]: .*?$/g, "")
|
||||
.replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
|
||||
.replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "<a>$1</a>")
|
||||
.replace(/!?\[\[\S[^\[\]\|]*(?:\|([^\[\]]*))?\S\]\]/g, "<a>$1</a>")
|
||||
.replace(/^\s{0,3}>\s?/g, "")
|
||||
.replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
|
||||
.replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
|
||||
.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")
|
||||
.replace(/\[![a-zA-Z]+\][-\+]? /g, "")
|
||||
} catch (e) {
|
||||
console.error(e)
|
||||
return markdown
|
||||
}
|
||||
return output
|
||||
}
|
||||
// -----
|
||||
|
||||
const highlight = (content, term) => {
|
||||
const highlightWindow = 20
|
||||
|
||||
// try to find direct match first
|
||||
const directMatchIdx = content.indexOf(term)
|
||||
if (directMatchIdx !== -1) {
|
||||
const h = highlightWindow / 2
|
||||
const before = content.substring(0, directMatchIdx).split(" ").slice(-h)
|
||||
const after = content
|
||||
.substring(directMatchIdx + term.length, content.length - 1)
|
||||
.split(" ")
|
||||
.slice(0, h)
|
||||
return (
|
||||
(before.length == h ? `...${before.join(" ")}` : before.join(" ")) +
|
||||
`<span class="search-highlight">${term}</span>` +
|
||||
after.join(" ")
|
||||
)
|
||||
}
|
||||
|
||||
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 ? "" : "..."
|
||||
}`
|
||||
}
|
||||
|
||||
;(async function () {
|
||||
; (async function() {
|
||||
const encoder = (str) => str.toLowerCase().split(/([^a-z]|[^\x00-\x7F])+/)
|
||||
const contentIndex = new FlexSearch.Document({
|
||||
cache: true,
|
||||
@ -138,25 +27,6 @@ const highlight = (content, term) => {
|
||||
})
|
||||
}
|
||||
|
||||
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>${resultText}</p>
|
||||
</button>`
|
||||
}
|
||||
|
||||
const redir = (id, term) => {
|
||||
// SPA navigation
|
||||
window.Million.navigate(
|
||||
new URL(`${BASE_URL.replace(/\/$/g, "")}${id}#:~:text=${encodeURIComponent(term)}/`),
|
||||
".singlePage",
|
||||
)
|
||||
closeSearch()
|
||||
}
|
||||
|
||||
const formatForDisplay = (id) => ({
|
||||
id,
|
||||
url: id,
|
||||
@ -164,16 +34,7 @@ const highlight = (content, term) => {
|
||||
content: content[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) => {
|
||||
registerHandlers((e) => {
|
||||
term = e.target.value
|
||||
const searchResults = contentIndex.search(term, [
|
||||
{
|
||||
@ -195,68 +56,6 @@ const highlight = (content, term) => {
|
||||
}
|
||||
const allIds = new Set([...getByField("title"), ...getByField("content")])
|
||||
const finalResults = [...allIds].map(formatForDisplay)
|
||||
|
||||
// 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 === "k" && (event.ctrlKey || event.metaKey)) {
|
||||
event.preventDefault()
|
||||
openSearch()
|
||||
}
|
||||
if (event.key === "Escape") {
|
||||
event.preventDefault()
|
||||
closeSearch()
|
||||
}
|
||||
})
|
||||
|
||||
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()
|
||||
displayResults(finalResults)
|
||||
})
|
||||
})()
|
||||
|
||||
207
assets/js/util.js
Normal file
207
assets/js/util.js
Normal file
@ -0,0 +1,207 @@
|
||||
// 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(/(#{1,6})\s+(.+)\1?/g, "<b>$2</b>")
|
||||
.replace(/\s{0,2}\[.*?\]: .*?$/g, "")
|
||||
.replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
|
||||
.replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "<a>$1</a>")
|
||||
.replace(/!?\[\[\S[^\[\]\|]*(?:\|([^\[\]]*))?\S\]\]/g, "<a>$1</a>")
|
||||
.replace(/^\s{0,3}>\s?/g, "")
|
||||
.replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
|
||||
.replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
|
||||
.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")
|
||||
.replace(/\[![a-zA-Z]+\][-\+]? /g, "")
|
||||
} catch (e) {
|
||||
console.error(e)
|
||||
return markdown
|
||||
}
|
||||
return output
|
||||
}
|
||||
|
||||
const highlight = (content, term) => {
|
||||
const highlightWindow = 20
|
||||
|
||||
// try to find direct match first
|
||||
const directMatchIdx = content.indexOf(term)
|
||||
if (directMatchIdx !== -1) {
|
||||
const h = highlightWindow / 2
|
||||
const before = content.substring(0, directMatchIdx).split(" ").slice(-h)
|
||||
const after = content
|
||||
.substring(directMatchIdx + term.length, content.length - 1)
|
||||
.split(" ")
|
||||
.slice(0, h)
|
||||
return (
|
||||
(before.length == h ? `...${before.join(" ")}` : before.join(" ")) +
|
||||
`<span class="search-highlight">${term}</span>` +
|
||||
after.join(" ")
|
||||
)
|
||||
}
|
||||
|
||||
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 ? "" : "..."
|
||||
}`
|
||||
}
|
||||
|
||||
// Common utilities for search
|
||||
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>${resultText}</p>
|
||||
</button>`
|
||||
}
|
||||
|
||||
const redir = (id, term) => {
|
||||
// SPA navigation
|
||||
window.Million.navigate(
|
||||
new URL(`${BASE_URL.replace(/\/$/g, "")}${id}#:~:text=${encodeURIComponent(term)}/`),
|
||||
".singlePage",
|
||||
)
|
||||
closeSearch()
|
||||
}
|
||||
|
||||
function openSearch() {
|
||||
const source = document.getElementById("search-bar")
|
||||
const results = document.getElementById("results-container")
|
||||
const searchContainer = document.getElementById("search-container")
|
||||
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() {
|
||||
const searchContainer = document.getElementById("search-container")
|
||||
searchContainer.style.display = "none"
|
||||
}
|
||||
|
||||
const registerHandlers = (onInputFn) => {
|
||||
const source = document.getElementById("search-bar")
|
||||
const searchContainer = document.getElementById("search-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", onInputFn)
|
||||
document.addEventListener("keydown", (event) => {
|
||||
if (event.key === "k" && (event.ctrlKey || event.metaKey)) {
|
||||
event.preventDefault()
|
||||
openSearch()
|
||||
}
|
||||
if (event.key === "Escape") {
|
||||
event.preventDefault()
|
||||
closeSearch()
|
||||
}
|
||||
})
|
||||
|
||||
const searchButton = document.getElementById("search-icon")
|
||||
searchButton.addEventListener("click", (_) => {
|
||||
openSearch()
|
||||
})
|
||||
searchButton.addEventListener("keydown", (_) => {
|
||||
openSearch()
|
||||
})
|
||||
searchContainer.addEventListener("click", (_) => {
|
||||
closeSearch()
|
||||
})
|
||||
document.getElementById("search-space").addEventListener("click", (evt) => {
|
||||
evt.stopPropagation()
|
||||
})
|
||||
}
|
||||
|
||||
const displayResults = (finalResults) => {
|
||||
const results = document.getElementById("results-container")
|
||||
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)
|
||||
})
|
||||
}
|
||||
}
|
||||
@ -40,10 +40,13 @@
|
||||
<link href="{{$lightSyntax.Permalink}}" rel="stylesheet" id="theme-link">
|
||||
|
||||
<!-- Base scripts -->
|
||||
{{ $darkMode := resources.Get "js/darkmode.js" | resources.ExecuteAsTemplate "js/darkmode.js" . | resources.Fingerprint "md5" | resources.Minify }}
|
||||
<script src="{{$darkMode.Permalink}}"></script>
|
||||
{{$scripts := (slice "js/darkmode.js" "js/util.js")}}
|
||||
{{range $scripts}}
|
||||
{{$scriptname := .}}
|
||||
{{ $s := resources.Get $scriptname | resources.ExecuteAsTemplate $scriptname . | resources.Fingerprint "md5" | resources.Minify }}
|
||||
<script src="{{$s.Permalink}}"></script>
|
||||
{{end}}
|
||||
{{partial "katex.html" .}}
|
||||
|
||||
|
||||
<script src="https://unpkg.com/@floating-ui/core@0.7.3"></script>
|
||||
<script src="https://unpkg.com/@floating-ui/dom@0.5.4"></script>
|
||||
|
||||
@ -1,10 +1,12 @@
|
||||
<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 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/npm/flexsearch@0.7.21/dist/flexsearch.bundle.js" integrity="sha256-i3A0NZGkhsKjVMzFxv3ksk0DZh3aXqu0l49Bbh0MdjE=" crossorigin="anonymous" defer></script>
|
||||
{{ $js := resources.Get "js/search.js" | resources.Fingerprint "md5" | resources.Minify }}
|
||||
<script src="https://cdn.jsdelivr.net/npm/flexsearch@0.7.21/dist/flexsearch.bundle.js"
|
||||
integrity="sha256-i3A0NZGkhsKjVMzFxv3ksk0DZh3aXqu0l49Bbh0MdjE=" crossorigin="anonymous" defer></script>
|
||||
{{ $js := resources.Get "js/search.js" | resources.Fingerprint "md5" | resources.Minify }}
|
||||
<script defer src="{{ $js.Permalink }}"></script>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user