52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
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import get from 'lodash/get'
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export default (query, page, additionalStr = null) => {
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let domain = get(page, 'title', '')
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if (get(page, 'frontmatter.tags')) {
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domain += ` ${page.frontmatter.tags.join(' ')}`
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}
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if (additionalStr) {
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domain += ` ${additionalStr}`
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}
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return matchTest(query, domain)
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}
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const matchTest = (query, domain) => {
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const escapeRegExp = str => str.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&')
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// eslint-disable-next-line no-control-regex
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const nonASCIIRegExp = new RegExp('[^\x00-\x7F]')
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const words = query
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.split(/\s+/g)
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.map(str => str.trim())
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.filter(str => !!str)
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if (!nonASCIIRegExp.test(query)) {
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// if the query only has ASCII chars, treat as English
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const hasTrailingSpace = query.endsWith(' ')
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const searchRegex = new RegExp(
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words
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.map((word, index) => {
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if (words.length === index + 1 && !hasTrailingSpace) {
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// The last word - ok with the word being "startswith"-like
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return `(?=.*\\b${escapeRegExp(word)})`
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} else {
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// Not the last word - expect the whole word exactly
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return `(?=.*\\b${escapeRegExp(word)}\\b)`
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}
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})
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.join('') + '.+',
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'gi'
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)
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return searchRegex.test(domain)
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} else {
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// if the query has non-ASCII chars, treat as other languages
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return words.some(word => domain.toLowerCase().indexOf(word) > -1)
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}
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}
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