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