82 lines
2.4 KiB
JavaScript
82 lines
2.4 KiB
JavaScript
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// Shamelessly copied from https://github.com/megawac/irc-style-parser/
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// Lol, I just gave credit, didn't I..
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// Dammit, well, there's that.
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let styleCheck_Re = /[\x00-\x1F]/, back_re = /^(\d{1,2})(,(\d{1,2}))?/,
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colourKey = "\x03", colour_re = /\x03/g,
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styleBreak = "\x0F"; // breaks all open styles ^O (\x0F)
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let 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] != null ? 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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//http://www.mirc.com/colors.html
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let colors = [
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"white", "black", "navy", "green", "red", "brown",
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"purple", "olive", "yellow", "lightgreen", "teal",
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"cyan", "blue", "pink", "gray", "lightgrey"
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].reduce(function(memo, name, index) {
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memo[index] = {
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name: name,
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fore: "irc-fg" + index,
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back: "irc-bg" + index,
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key: index
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};
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return memo;
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}, {});
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function stylize(line) {
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// Recheck
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if (!styleCheck_Re.test(line)) return line;
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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(stylize).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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colour = match && colors[+match[1]];
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if (!match || !colour) {
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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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// set the background colour
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// we don't overide the background local var to support nesting
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if (colors[+match[3]]) {
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background = " " + colors[+match[3]].back;
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}
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// update the parsed text result
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result = result.replace(colourKey + text,
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"<span class='{0}'>{1}</span>".format(colour.fore + background, text.slice(match[0].length)));
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}
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// Matching styles (italics/bold/underline)
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// if only colors were this easy...
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styles.forEach(function(style) {
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if (result.indexOf(style.key) < 0) return;
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result = result.replace(style.keyregex, function(match, text) {
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return "<span class='{0}'>{1}</span>".format(style.style, text)
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});
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});
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//replace the reminent colour terminations and be done with it
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return result.replace(colour_re, "");
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}
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window.colorizer.stylize = stylize;
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