diff --git a/src/domain/Linkifier.js b/src/domain/Linkifier.js new file mode 100644 index 00000000..a429c8d3 --- /dev/null +++ b/src/domain/Linkifier.js @@ -0,0 +1,57 @@ +import { MessageObjectFormat } from "./MessageObjectFormat.js"; + +export class Linkifier { + + /** + * @param {String} text Text to linkify + */ + constructor(text) { + this._text = text; + this._curr = 0; + this._message = new MessageObjectFormat(); + } + + /** + * Separate string into text, newlines and add them into message object. + * @param {String} text + */ + _addTextToMessage(text) { + const components = text.split("\n"); + components.slice(0, -1).forEach(t => { + this._message.insertText(t); + this._message.insertNewline(); + }); + const [last] = components.slice(-1); + this._message.insertText(last); + } + + /** + * Add text from this._curr upto start of supplied match into message object. + * If match is not provided, everything from this._curr to the end of + * this._text is added as text to the message object. + * @param {Array} [match] regex match + */ + _handleText(match) { + const index = match?.index; + const text = this._text.slice(this._curr, index); + this._addTextToMessage(text); + const len = match?.[0].length; + this._curr = index + len; + } + + /** + * Splits message text into parts (text, newline and links) + * @returns {MessageObjectFormat} Object representation of chat message + */ + linkify() { + const regex = /(?:https|http|ftp):\/\/[a-zA-Z0-9:.\[\]#-]+(?:\/[^\s]*[^\s.,?!]|[^\s\u{80}-\u{10ffff}.,?!])/gui + const matches = this._text.matchAll(regex); + for (let match of matches) { + const link = match[0]; + this._handleText(match); + this._message.insertLink(link, link); + } + this._handleText(); + return this._message; + } +}