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125 lines
3.4 KiB
JavaScript
125 lines
3.4 KiB
JavaScript
import Handlebars from "handlebars/runtime";
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import URI from "urijs";
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module.exports = function(text) {
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text = Handlebars.Utils.escapeExpression(text);
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text = colors(text);
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text = channels(text);
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text = uri(text);
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return text;
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};
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function uri(text) {
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return URI.withinString(text, function(url) {
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if (url.indexOf("javascript:") === 0) {
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return url;
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}
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var split = url.split("<");
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url = "<a href='" + split[0].replace(/^www/, "http://www") + "' target='_blank' rel='noopener'>" + split[0] + "</a>";
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if (split.length > 1) {
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url += "<" + split.slice(1).join("<");
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}
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return url;
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});
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}
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/**
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* Channels names are strings of length up to fifty (50) characters.
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* The only restriction on a channel name is that it SHALL NOT contain
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* any spaces (' '), a control G (^G or ASCII 7), a comma (',').
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* Channel prefix '&' is handled as '&' because this parser is executed
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* after entities in the message have been escaped. This prevents a couple of bugs.
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*/
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function channels(text) {
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return text.replace(
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/(^|\s|\x07|,)((?:#|&)[^\x07\s,]{1,49})/g,
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'$1<span class="inline-channel" role="button" tabindex="0" data-chan="$2">$2</span>'
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);
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}
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/**
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* MIRC compliant colour and style parser
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* Unfortuanately this is a non trivial operation
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* See this branch for source and tests
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* https://github.com/megawac/irc-style-parser/tree/shout
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*/
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var styleCheck_Re = /[\x00-\x1F]/,
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back_re = /^([0-9]{1,2})(,([0-9]{1,2}))?/,
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colourKey = "\x03",
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// breaks all open styles ^O (\x0F)
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styleBreak = "\x0F";
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function styleTemplate(settings) {
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return "<span class='" + settings.style + "'>" + settings.text + "</span>";
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}
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var styles = [
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["normal", "\x00", ""], ["underline", "\x1F"],
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["bold", "\x02"], ["italic", "\x1D"]
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].map(function(style) {
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var escaped = encodeURI(style[1]).replace("%", "\\x");
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return {
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name: style[0],
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style: style[2] ? style[2] : "irc-" + style[0],
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key: style[1],
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keyregex: new RegExp(escaped + "(.*?)(" + escaped + "|$)")
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};
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});
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function colors(line) {
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// http://www.mirc.com/colors.html
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// http://www.aviran.org/stripremove-irc-client-control-characters/
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// https://github.com/perl6/mu/blob/master/examples/rules/Grammar-IRC.pm
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// regexs are cruel to parse this thing
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// already done?
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if (!styleCheck_Re.test(line)) {
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return line;
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}
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// split up by the irc style break character ^O
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if (line.indexOf(styleBreak) >= 0) {
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return line.split(styleBreak).map(colors).join("");
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}
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var result = line;
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var parseArr = result.split(colourKey);
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var text, match, colour, background = "";
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for (var i = 0; i < parseArr.length; i++) {
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text = parseArr[i];
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match = text.match(back_re);
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if (!match) {
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// ^C (no colour) ending. Escape current colour and carry on
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background = "";
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continue;
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}
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colour = "irc-fg" + +match[1];
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// set the background colour
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if (match[3]) {
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background = " irc-bg" + +match[3];
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}
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// update the parsed text result
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result = result.replace(colourKey + text, styleTemplate({
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style: colour + background,
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text: text.slice(match[0].length)
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}));
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}
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// Matching styles (italics/bold/underline)
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// if only colours were this easy...
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styles.forEach(function(style) {
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if (result.indexOf(style.key) < 0) {
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return;
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}
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result = result.replace(style.keyregex, function(matchedTrash, matchedText) {
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return styleTemplate({
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style: style.style,
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text: matchedText
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});
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});
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});
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return result;
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}
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