themes/docsy/assets/js/plantuml.js

{{ with .Site.Params.plantuml }}
{{ if .enable }}
(function($) {

    function encode64(data) {
        r = "";
        for (i = 0; i < data.length; i += 3) {
            if (i + 2 == data.length) {
                r += append3bytes(data.charCodeAt(i), data.charCodeAt(i + 1), 0);
            } else if (i + 1 == data.length) {
                r += append3bytes(data.charCodeAt(i), 0, 0);
            } else {
                r += append3bytes(data.charCodeAt(i), data.charCodeAt(i + 1),
                    data.charCodeAt(i + 2));
            }
        }
        return r;
    }

    function append3bytes(b1, b2, b3) {
        c1 = b1 >> 2;
        c2 = ((b1 & 0x3) << 4) | (b2 >> 4);
        c3 = ((b2 & 0xF) << 2) | (b3 >> 6);
        c4 = b3 & 0x3F;
        r = "";
        r += encode6bit(c1 & 0x3F);
        r += encode6bit(c2 & 0x3F);
        r += encode6bit(c3 & 0x3F);
        r += encode6bit(c4 & 0x3F);
        return r;
    }

    function encode6bit(b) {
        if (b < 10) {
            return String.fromCharCode(48 + b);
        }
        b -= 10;
        if (b < 26) {
            return String.fromCharCode(65 + b);
        }
        b -= 26;
        if (b < 26) {
            return String.fromCharCode(97 + b);
        }
        b -= 26;
        if (b == 0) {
            return '-';
        }
        if (b == 1) {
            return '_';
        }
        return '?';
    }

    var needPlantuml = false;
    $('.language-plantuml').parent().replaceWith(function() {
        let s = unescape(encodeURIComponent($(this).text()));
        return $('<img src="{{.svg_image_url | default "http://www.plantuml.com/plantuml/svg/"}}' + encode64(deflate(s, 9)) + '">')
    });
})(jQuery);
{{ end }}
{{ end }}