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Refactored Linkifier class into single function
Modified design so that linkify interacts with MessageBodyBuilder through callbacks. Signed-off-by: RMidhunSuresh <rmidhunsuresh@gmail.com>
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RMidhunSuresh
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@ -1,173 +0,0 @@
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import { MessageBodyBuilder } from "./MessageBodyBuilder.js";
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export class Linkifier {
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/**
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* @param {String} text Text to linkify
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*/
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constructor(text) {
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this._text = text;
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this._curr = 0;
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this._message = new MessageBodyBuilder();
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}
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/**
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* Separate string into text, newlines and add them into message object.
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* @param {String} text
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*/
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_addTextToMessage(text) {
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const components = text.split("\n");
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components.slice(0, -1).forEach(t => {
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this._message.insertText(t);
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this._message.insertNewline();
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});
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const [last] = components.slice(-1);
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this._message.insertText(last);
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}
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/**
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* Add text from this._curr upto start of supplied match into message object.
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* If match is not provided, everything from this._curr to the end of
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* this._text is added as text to the message object.
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* @param {Array} [match] regex match
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*/
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_handleText(match) {
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const index = match?.index;
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const text = this._text.slice(this._curr, index);
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this._addTextToMessage(text);
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const len = match?.[0].length;
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this._curr = index + len;
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}
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/**
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* Splits message text into parts (text, newline and links)
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* @returns {MessageBodyBuilder} Object representation of chat message
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*/
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linkify() {
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const regex = /(?:https|http|ftp):\/\/[a-zA-Z0-9:.\[\]#-]+(?:\/[^\s]*[^\s.,?!]|[^\s\u{80}-\u{10ffff}.,?!])/gui
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const matches = this._text.matchAll(regex);
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for (let match of matches) {
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const link = match[0];
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this._handleText(match);
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this._message.insertLink(link, link);
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}
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this._handleText();
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return this._message;
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}
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}
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export function tests() {
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function linkify(text) {
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const obj = new Linkifier(text);
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return obj.linkify();
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}
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function test(assert, input, output) {
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output = new MessageBodyBuilder(output);
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input = linkify(input);
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assert.deepEqual(input, output);
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}
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function testLink(assert, link, expectFail = false) {
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const input = link;
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const output = expectFail ? [{ type: "text", text: input }] :
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[{ type: "link", url: input, text: input }];
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test(assert, input, output);
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}
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return {
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// Tests for text
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"Text only": assert => {
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const input = "This is a sentence";
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const output = [{ type: "text", text: input }];
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test(assert, input, output);
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},
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"Text with newline": assert => {
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const input = "This is a sentence.\nThis is another sentence.";
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const output = [
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{ type: "text", text: "This is a sentence." },
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{ type: "newline" },
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{ type: "text", text: "This is another sentence." }
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];
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test(assert, input, output);
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},
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"Text with newline & trailing newline": assert => {
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const input = "This is a sentence.\nThis is another sentence.\n";
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const output = [
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{ type: "text", text: "This is a sentence." },
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{ type: "newline" },
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{ type: "text", text: "This is another sentence." },
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{ type: "newline" }
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];
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test(assert, input, output);
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},
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// Tests for links
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"Link with host": assert => {
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testLink(assert, "https://matrix.org");
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},
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"Link with host & path": assert => {
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testLink(assert, "https://matrix.org/docs/develop");
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},
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"Link with host & fragment": assert => {
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testLink(assert, "https://matrix.org#test");
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},
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"Link with host & query": assert => {
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testLink(assert, "https://matrix.org/?foo=bar");
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},
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"Complex link": assert => {
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const link = "https://www.foobar.com/url?sa=t&rct=j&q=&esrc=s&source" +
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"=web&cd=&cad=rja&uact=8&ved=2ahUKEwjyu7DJ-LHwAhUQyzgGHc" +
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"OKA70QFjAAegQIBBAD&url=https%3A%2F%2Fmatrix.org%2Fdocs%" +
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"2Fprojects%2Fclient%2Felement%2F&usg=AOvVaw0xpENrPHv_R-" +
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"ERkyacR2Bd";
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testLink(assert, link);
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},
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"Localhost link": assert => {
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testLink(assert, "http://localhost");
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testLink(assert, "http://localhost:3000");
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},
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"IPV4 link": assert => {
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testLink(assert, "https://192.0.0.1");
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testLink(assert, "https://250.123.67.23:5924");
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},
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"IPV6 link": assert => {
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testLink(assert, "http://[2001:0db8:85a3:0000:0000:8a2e:0370:7334]");
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testLink(assert, "http://[2001:0db8:85a3:0000:0000:8a2e:0370:7334]:7000");
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},
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"Missing scheme must not linkify": assert => {
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testLink(assert, "matrix.org/foo/bar", true);
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},
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"Punctuation at end of link must not linkify": assert => {
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const link = "https://foo.bar/?nenjil=lal810";
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const end = ".,? ";
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for (const char of end) {
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const out = [{ type: "link", url: link, text: link }, { type: "text", text: char }];
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test(assert, link + char, out);
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}
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},
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"Unicode in hostname must not linkify": assert => {
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const link = "https://foo.bar\uD83D\uDE03.com";
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const out = [{ type: "link", url: "https://foo.bar", text: "https://foo.bar" },
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{ type: "text", text: "\uD83D\uDE03.com" }];
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test(assert, link, out);
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},
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"Link with unicode only after / must linkify": assert => {
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testLink(assert, "https://foo.bar.com/\uD83D\uDE03");
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}
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};
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}
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12
src/domain/session/room/timeline/linkify.js
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12
src/domain/session/room/timeline/linkify.js
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@ -0,0 +1,12 @@
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export function linkify(text, callback) {
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const regex = /(?:https|http|ftp):\/\/[a-zA-Z0-9:.\[\]#-]+(?:\/[^\s]*[^\s.,?!]|[^\s\u{80}-\u{10ffff}.,?!])/gui
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const matches = text.matchAll(regex);
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let curr = 0;
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for (let match of matches) {
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callback(match[0], true);
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callback(text.slice(curr, match.index), false);
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const len = match[0].length;
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curr = match.index + len;
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}
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callback(text.slice(curr), false);
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}
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