yuml-diagram/src/utils/svg-utils.js

UML diagramming package based on the yUML syntax

module.exports = function()
{
    var shapes = {
        actor: [`<circle cx="0" cy="-20" r="7.5" />
                <line x1="0" y1="-12.5" x2="0" y2="5" />
                <line x1="-15" y1="-5" x2="15" y2="-5" />
                <line x1="0" y1="5" x2="-15" y2="17" />
                <line x1="0" y1="5" x2="15" y2="17" />`, 0, 25 ]
    }

    this.processEmbeddedImages = function(svg, isDark)
    {
        var expr = /<text\s.*>{img:.*}.*<\/text>/g;

        svg = svg.replace(expr, function(match) {
            try {
                var parts = /<text\s(.*)>{img:(.*)}(.*)<\/text>/.exec(match);
                var text = "<text " + parts[1] + ">" + parts[3].trim() + "</text>";

                if (!shapes.hasOwnProperty(parts[2]))
                    return text;

                var translate = /<text\s.*x=\"(-?[0-9\.]+)\" y=\"(-?[0-9\.]+)\"/.exec(text);
                var x = translate[1];
                var y = translate[2];

                var img = shapes[parts[2]];
                text = text.replace(' x="' + x + '"', ' x="' + (parseFloat(x)+img[1]) + '"');
                text = text.replace(' y="' + y + '"', ' y="' + (parseFloat(y)+img[2]) + '"');

                return '<g transform="translate(' + x + ',' + y + ')" style="fill:none;stroke:'
                    + (isDark?"white":"black") + ';stroke-width:1px">' + img[0] + "</g>\r\n" + text;
            }
            catch (e) {
                return match;
            }
        });

        return svg;
    }
}