inno-diagram/src/utils/yumldoc-utils.js

It was created to develop Inno Linc.

const activityDiagram = require('../diagrams/activity-diagram.js');
const Viz = require("../../lib/viz-lite.js");
require('./svg-utils.js')();
const fs = require("fs");

module.exports = function()
{
    //Json 파일을 파싱하여 얻은 텍스트를 가지고 Diagram을 그림
    this.processJson = function(text, isDark)
    {
        var options = { dir: "TB", generate: true, dark: isDark};

        var dot = null;
        var svg = null;

        if (text.length == 0)
            return "";

        dot = activityDiagram(text, options);

        if (dot === null && svg === null)
            return "Error: unable to parse the yUML file";

        if (dot !== null)
        {

            try {
                svg = Viz(buildDotHeader(isDark) + dot);
                svg = processEmbeddedImages(svg, isDark);
            }
            catch (e) {
                return "Error composing the diagram";
            }
            
        }

        return svg;
    }

    this.processDirectives = function(line, options)
    {
        const directions = {
            leftToRight: "LR",
            rightToLeft: "RL",
            topDown: "TB"
        };

        var keyvalue = /^\/\/\s+\{\s*([\w]+)\s*:\s*([\w]+)\s*\}$/.exec(line);  // extracts directives as:  // {key:value}
        if (keyvalue != null && keyvalue.length == 3)
        {
            var key = keyvalue[1];
            var value = keyvalue[2];

            switch (key)
            {
                case "type":
                    if (/^(class|usecase|activity|state|deployment|package|sequence)$/.test(value))
                        options.type = value;
                    else {
                        options.error = "Error: invalid value for 'type'. Allowed values are: class, usecase, activity, state, deployment, package.";
                        return;
                    }
                    break;
                case "direction":
                    if (/^(leftToRight|rightToLeft|topDown)$/.test(value))
                        options.dir = directions[value];
                    else {
                        options.error = "Error: invalid value for 'direction'. Allowed values are: leftToRight, rightToLeft, topDown <i>(default)</i>.";
                        return;
                    }
                    break;
                case "generate":
                    if (/^(true|false)$/.test(value))
                        options.generate = (value === "true");
                    else {
                        options.error = "Error: invalid value for 'generate'. Allowed values are: true, false <i>(default)</i>.";
                        return;
                    }
            }
        }
    }
}