thelounge/client/js/libs/handlebars/parse.js
2018-05-01 14:31:46 +03:00

118 lines
4.1 KiB
JavaScript

"use strict";
const Handlebars = require("handlebars/runtime");
const parseStyle = require("./ircmessageparser/parseStyle");
const findChannels = require("./ircmessageparser/findChannels");
const findLinks = require("./ircmessageparser/findLinks");
const findEmoji = require("./ircmessageparser/findEmoji");
const findNames = require("./ircmessageparser/findNames");
const merge = require("./ircmessageparser/merge");
const colorClass = require("./colorClass");
const emojiMap = require("../fullnamemap.json");
// Create an HTML `span` with styling information for a given fragment
function createFragment(fragment) {
const classes = [];
if (fragment.bold) {
classes.push("irc-bold");
}
if (fragment.textColor !== undefined) {
classes.push("irc-fg" + fragment.textColor);
}
if (fragment.bgColor !== undefined) {
classes.push("irc-bg" + fragment.bgColor);
}
if (fragment.italic) {
classes.push("irc-italic");
}
if (fragment.underline) {
classes.push("irc-underline");
}
if (fragment.strikethrough) {
classes.push("irc-strikethrough");
}
if (fragment.monospace) {
classes.push("irc-monospace");
}
let attributes = classes.length ? ` class="${classes.join(" ")}"` : "";
const escapedText = Handlebars.Utils.escapeExpression(fragment.text);
if (fragment.hexColor) {
attributes += ` style="color:#${fragment.hexColor}`;
if (fragment.hexBgColor) {
attributes += `;background-color:#${fragment.hexBgColor}`;
}
attributes += '"';
}
if (attributes.length) {
return `<span${attributes}>${escapedText}</span>`;
}
return escapedText;
}
// Transform an IRC message potentially filled with styling control codes, URLs,
// nicknames, and channels into a string of HTML elements to display on the client.
module.exports = function parse(text, users) {
// if it's not the users we're expecting, but rather is passed from Handlebars (occurs when users passed to template is null or undefined)
if (users && users.hash) {
users = [];
}
// Extract the styling information and get the plain text version from it
const styleFragments = parseStyle(text);
const cleanText = styleFragments.map((fragment) => fragment.text).join("");
// On the plain text, find channels and URLs, returned as "parts". Parts are
// arrays of objects containing start and end markers, as well as metadata
// depending on what was found (channel or link).
const channelPrefixes = ["#", "&"]; // TODO Channel prefixes should be RPL_ISUPPORT.CHANTYPES
const userModes = ["!", "@", "%", "+"]; // TODO User modes should be RPL_ISUPPORT.PREFIX
const channelParts = findChannels(cleanText, channelPrefixes, userModes);
const linkParts = findLinks(cleanText);
const emojiParts = findEmoji(cleanText);
const nameParts = findNames(cleanText, (users || []));
const parts = channelParts
.concat(linkParts)
.concat(emojiParts)
.concat(nameParts);
// Merge the styling information with the channels / URLs / nicks / text objects and
// generate HTML strings with the resulting fragments
return merge(parts, styleFragments).map((textPart) => {
// Create HTML strings with styling information
const fragments = textPart.fragments.map(createFragment).join("");
// Wrap these potentially styled fragments with links and channel buttons
if (textPart.link) {
const escapedLink = Handlebars.Utils.escapeExpression(textPart.link);
return `<a href="${escapedLink}" target="_blank" rel="noopener">${fragments}</a>`;
} else if (textPart.channel) {
const escapedChannel = Handlebars.Utils.escapeExpression(textPart.channel);
return `<span class="inline-channel" role="button" tabindex="0" data-chan="${escapedChannel}">${fragments}</span>`;
} else if (textPart.emoji) {
if (!emojiMap[textPart.emoji]) {
return `<span class="emoji" role="img">${fragments}</span>`;
}
return `<span class="emoji" role="img" aria-label="Emoji: ${emojiMap[textPart.emoji]}" title="${emojiMap[textPart.emoji]}">${fragments}</span>`;
} else if (textPart.nick) {
const nick = Handlebars.Utils.escapeExpression(textPart.nick);
return `<span role="button" class="user ${colorClass(textPart.nick)}" data-name="${nick}">${fragments}</span>`;
}
return fragments;
}).join("");
};