mirror of https://git.sr.ht/~cadence/bibliogram
57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
const constants = require("../constants")
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function tryMatch(text, against, callback) {
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let matched = text.match(against)
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if (matched) callback(matched)
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}
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function textToParts(text) {
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return [{type: "text", text: text}]
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}
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function replacePart(parts, index, match, replacements) {
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const toReplace = parts.splice(index, 1)[0]
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const before = toReplace.text.slice(0, match.index)
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const after = toReplace.text.slice(match.index + match[0].length)
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parts.splice(index, 0, ...textToParts(before), ...replacements, ...textToParts(after))
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}
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function partsUsername(parts) {
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for (let i = 0; i < parts.length; i++) {
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if (parts[i].type === "text") {
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tryMatch(parts[i].text, `@(${constants.external.username_regex})`, match => {
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replacePart(parts, i, match, [
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{type: "user", text: match[0], user: match[1]}
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])
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i += 1 // skip parts: user
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})
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}
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}
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return parts
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}
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function partsHashtag(parts) {
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for (let i = 0; i < parts.length; i++) {
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if (parts[i].type === "text") {
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tryMatch(parts[i].text, `#(${constants.external.hashtag_regex})`, match => {
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replacePart(parts, i, match, [
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{type: "hashtag", text: match[0], hashtag: match[1]}
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])
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i += 1 // skip parts: hashtag
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})
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}
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}
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return parts
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}
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function structure(text) {
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const parts = textToParts(text)
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partsUsername(parts)
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partsHashtag(parts)
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return parts
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}
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module.exports.structure = structure
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module.exports.partsUsername = partsUsername
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module.exports.partsHashtag = partsHashtag
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