Linkify Plus Plus

Based on Linkify Plus. Turn plain text URLs into links.

נכון ליום 24-07-2018. ראה הגרסה האחרונה.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name Linkify Plus Plus
// @version 8.2.2
// @description Based on Linkify Plus. Turn plain text URLs into links.
// @license BSD-3-Clause
// @homepageURL https://github.com/eight04/linkify-plus-plus
// @supportURL https://github.com/eight04/linkify-plus-plus/issues
// @namespace eight04.blogspot.com
// @include *
// @exclude https://www.google.*/search*
// @exclude https://www.google.*/webhp*
// @exclude https://music.google.com/*
// @exclude https://mail.google.com/*
// @exclude https://docs.google.com/*
// @exclude https://encrypted.google.com/*
// @exclude http://mxr.mozilla.org/*
// @exclude http://w3c*.github.io/*
// @require https://greatest.deepsurf.us/scripts/7212-gm-config-eight-s-version/code/GM_config%20(eight's%20version).js?version=156587
// @require https://greatest.deepsurf.us/scripts/27630-linkify-plus-plus-core/code/linkify-plus-plus-core.js?version=213494
// @grant GM_addStyle
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// @grant unsafeWindow
// @compatible firefox Tampermonkey latest
// @compatible chrome Tampermonkey latest
// ==/UserScript==

/* globals GM_config */

(function(){

// Limit contentType to "text/plain" or "text/html"
if (document.contentType != undefined && document.contentType != "text/plain" && document.contentType != "text/html") {
	return;
}

var {linkify, UrlMatcher, INVALID_TAGS} = window.linkifyPlusPlusCore;

const BUFFER_SIZE = 100;

// Valid root node before linkifing
function validRoot(node, validator) {
	// Cache valid state in node.VALID
	if (node.VALID !== undefined) {
		return node.VALID;
	}

	// Loop through ancestor
	var cache = [], isValid;
	while (node != document.documentElement) {
		cache.push(node);

		// It is invalid if it has invalid ancestor
		if (!validator(node) || INVALID_TAGS[node.nodeName]) {
			isValid = false;
			break;
		}

		// The node was removed from DOM tree
		if (!node.parentNode) {
			return false;
		}

		node = node.parentNode;

		if (node.VALID !== undefined) {
			isValid = node.VALID;
			break;
		}
	}

	// All ancestors are fine
	if (isValid === undefined) {
		isValid = true;
	}

	// Cache the result
	var i;
	for (i = 0; i < cache.length; i++) {
		cache[i].VALID = isValid;
	}

	return isValid;
}

function createValidator({selector, skipSelector}) {
	return function(node) {
		if (node.isContentEditable) {
			return false;
		}
		if (selector && node.matches && node.matches(selector)) {
			return true;
		}
		if (skipSelector && node.matches && node.matches(skipSelector)) {
			return false;
		}
		return true;
	};
}

function selectorTest(selector) {
	try {
		document.documentElement.matches(selector);
	} catch (err) {
		alert(`Invalid selector: ${selector}`);
		return false;
	}
	return true;
}

function createList(text) {
	text = text.trim();
	if (!text) {
		return null;
	}
	return text.split("\n");
}

function createBuffer(size) {
  const set = new Set;
  const buff = Array(size);
  const eventBus = document.createElement("span");
  let start = 0;
  let end = 0;
  return {push, eventBus, shift};
  
  function push(item) {
    if (set.has(item)) {
      return;
    }
    if (set.size && start === end) {
      // overflow
      eventBus.dispatchEvent(new CustomEvent("overflow"));
      set.clear();
      return;
    }
    set.add(item);
    buff[end] = item;
    end = (end + 1) % size;
    eventBus.dispatchEvent(new CustomEvent("add"));
  }
  
  function shift() {
    if (!set.size) {
      return;
    }
    const item = buff[start];
    set.delete(item);
    buff[start] = null;
    start = (start + 1) % size;
    return item;
  }
}

function createLinkifyProcess(options) {
  const buffer = createBuffer(BUFFER_SIZE);
  let overflowed = false;
  let started = false;
  buffer.eventBus.addEventListener("add", start);
  buffer.eventBus.addEventListener("overflow", () => overflowed = true);
  return {process};
  
  function process(root) {
    if (overflowed) {
      return false
    }
    if (validRoot(root, options.validator)) {
      buffer.push(root);
    }
    return true;
  }
  
  function start() {
    if (started) {
      return;
    }
    started = true;
    deque();
  }
  
  function deque() {
    let root;
    if (overflowed) {
      root = document.body;
      overflowed = false;
    } else {
      root = buffer.shift();
    }
    if (!root) {
      started = false;
      return;
    }
    
    linkify(root, options)
      .then(() => {
        var p = Promise.resolve();
        if (options.selector) {
          for (var node of root.querySelectorAll(options.selector)) {
            p = p.then(linkify.bind(null, node, options));
          }
        }
        return p;
      })
      .catch(err => {
        console.error(err);
      })
      .then(deque);
  }
}

function createOptions() {
  const options = {};
  setup();
  return options;
  
  function setup() {
    GM_config.setup({
      ip: {
        label: "Match 4 digits IP",
        type: "checkbox",
        default: true
      },
      image: {
        label: "Embed images",
        type: "checkbox",
        default: true
      },
      imageSkipSelector: {
        label: "Don't embed images under following elements",
        type: "textarea",
        default: ".hljs, .highlight, .brush\\:"
      },
      unicode: {
        label: "Allow non-ascii character",
        type: "checkbox",
        default: false
      },
      newTab: {
        label: "Open link in new tab",
        type: "checkbox",
        default: false
      },
      standalone: {
        label: "URL must be surrounded by whitespace",
        type: "checkbox",
        default: false
      },
      boundaryLeft: {
        label: "Boundary characters between whitespace and URL (left)",
        type: "text",
        default: "{[(\"'"
      },
      boundaryRight: {
        label: "Boundary characters between whitespace and URL (right)",
        type: "text",
        default: "'\")]},.;?!"
      },
      skipSelector: {
        label: "Do not linkify these elements. (CSS selector)",
        type: "textarea",
        default: ".highlight, .editbox, .brush\\:, .bdsug, .spreadsheetinfo"
      },
      selector: {
        label: "Always linkify these elements, override above. (CSS selector)",
        type: "textarea",
        default: ""
      },
      timeout: {
        label: "Max execution time (ms).",
        type: "number",
        default: 10000
      },
      maxRunTime: {
        label: "Max script run time (ms). If the script is freezing your browser, try to decrease this value.",
        type: "number",
        default: 100
      },
      customRules: {
        label: "Custom rules. One pattern per line. (RegExp)",
        type: "textarea",
        default: ""
      }
    }, function() {
      Object.assign(options, GM_config.get());
      if (options.selector && !selectorTest(options.selector)) {
        options.selector = null;
      }
      if (options.skipSelector && !selectorTest(options.skipSelector)) {
        options.skipSelector = null;
      }
      if (options.customRules) {
        options.customRules = createList(options.customRules);
      }
      options.validator = createValidator(options);
      options.fuzzyIp = options.ip;
      options.ignoreMustache = unsafeWindow.angular || unsafeWindow.Vue;
      options.embedImage = options.image;
      options.matcher = new UrlMatcher(options);
      options.onlink = options.imageSkipSelector ? onlink : null;
    });
  }
  
  function onlink({link, range, content}) {
    if (link.childNodes[0].nodeName != "IMG") return;
    
    var parent = range.startContainer;
    // it might be a text node
    if (!parent.closest) {
      parent = parent.parentNode;
    }
    if (!parent.closest(options.imageSkipSelector)) return;
    // remove image
    link.innerHTML = "";
    link.appendChild(content);
  }
}

// Program init
GM_addStyle(".linkifyplus img { max-width: 90%; }");
const linkifyProcess = createLinkifyProcess(createOptions());
const observer = new MutationObserver(function(mutations){
	// Filter out mutations generated by LPP
	var lastRecord = mutations[mutations.length - 1],
		nodes = lastRecord.addedNodes,
		i;

	if (nodes.length >= 2) {
		for (i = 0; i < 2; i++) {
			if (nodes[i].className == "linkifyplus") {
				return;
			}
		}
	}

  for (var record of mutations) {
    if (record.addedNodes.length) {
      if (!linkifyProcess.process(record.target)) {
        // it's full
        break;
      }
    }
  }
});

function init() {
  observer.observe(document.body, {
    childList: true,
    subtree: true
  });
  linkifyProcess.process(document.body);
}

function prepare() {
  // wait till everything is ready
  return Promise.all([prepareApp(), prepareBody()]);
  
  function prepareApp() {
    const appRoot = document.querySelector("[data-server-rendered]");
    if (!appRoot) {
      return;
    }
    return new Promise(resolve => {
      const onChange = () => {
        if (!appRoot.hasAttribute("data-server-rendered")) {
          resolve();
          observer.disconnect();
        }
      };
      const observer = new MutationObserver(onChange);
      observer.observe(appRoot, {attributes: true});
    });
  }
  
  function prepareBody() {
    if (document.body) {
      return;
    }
    return new Promise(resolve => {
      // https://github.com/Tampermonkey/tampermonkey/issues/485
      document.addEventListener("DOMContentLoaded", resolve, {once: true});
    });
  }
}

prepare().then(init);

})();