sisula/Sisulator.hta at ETL · Roenbaeck/sisula · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="utf-8" />
   <title>Sisulator</title>

   <HTA:APPLICATION
        APPLICATIONNAME="Sisulator"
        SCROLL="yes"
        SINGLEINSTANCE="yes"
        WINDOWSTATE="minimize"
        ID="HTA"
    />

    <script type="text/javascript" language="JavaScript">
    var ERROR = 0;
    var LOG;

    var MAP = {
        Anchor: {
            description: 'models from Anchor Modeling, http://www.anchormodeling.com',
            // name of the root element and resulting JSON object
            root: 'schema',
            // define 'keys' for elements that may occur more than once
            // on the same level in the XML document
            key: {
                knot: function(xml, fragment) {
                    return fragment.getAttribute('mnemonic');
                },
                anchor: function(xml, fragment) {
                    return fragment.getAttribute('mnemonic');
                },
                attribute: function(xml, fragment) {
                    return fragment.getAttribute('mnemonic');
                },
                tie: function(xml, fragment) {
                    var roles = fragment.selectNodes('*[@role]');
                    var key = '', role;
                    for(var i = 0; i < roles.length; i++) {
                        role = roles.item(i);
                        key += role.getAttribute('type') + '_' + role.getAttribute('role');
                        if(i < roles.length - 1) key += '_';
                    }
                    return key;
                },
                anchorRole: function(xml, fragment) {
                    return fragment.getAttribute('type') + '_' + fragment.getAttribute('role');
                },
                knotRole: function(xml, fragment) {
                    return fragment.getAttribute('type') + '_' + fragment.getAttribute('role');
                }
            },
            // used to replace certain element names with others
            replacer: function(name) {
                switch(name) {
                    case 'anchorRoles':
                        return 'roles';
                    case 'knotRoles':
                        return 'roles';
                    default:
                        return name;
                }
            }
        },
        Workflow: {
            description: 'workflow for SQL Server Job Agent',
            root: 'workflow',
            key: {
                job: function(xml, fragment) {
                    return fragment.getAttribute('name');
                },
                jobstep: function(xml, fragment) {
                    return fragment.getAttribute('name');
                },
                variable: function(xml, fragment) {
                    return fragment.getAttribute('name');
                }
            }
        },
        Source: {
            description: 'source data format description',
            root: 'source',
            key: {
                part: function(xml, fragment) {
                    return fragment.getAttribute('name');
                },
                term: function(xml, fragment) {
                    return fragment.getAttribute('name');
                },
                key: function(xml, fragment) {
                    return fragment.getAttribute('name');
                },
                component: function(xml, fragment) {
                    return fragment.getAttribute('of');
                },
                calculation: function(xml, fragment) {
                    return fragment.getAttribute('name');
                }
            }
        },
        Target: {
            description: 'target loading description',
            root: 'target',
            key: {
                map: function(xml, fragment) {
                    return fragment.getAttribute('source') + '__' + fragment.getAttribute('target');
                },
                condition: function(xml, fragment) {
                    return 'singleton'; // there can be only one!
                },
                load: function(xml, fragment) {
                    var pass = fragment.getAttribute('pass');
                    pass = pass ? '__' + pass : '';
                    return fragment.getAttribute('source') + '__' + fragment.getAttribute('target') + pass;
                },
                sql: function(xml, fragment) {
                    return fragment.getAttribute('position');
                }
            }
        }
    }

    var Sisulator = {
        // this function will recursively traverse the XML document and
        // create a 'hash' object that mimics the structure using the given map
        // to handle siblings using the same tag
        objectify: function(xml, map) {
            var listSuffix = 's';
            function objectifier(xmlFragment, map, object) {
                // element node
                if(xmlFragment.nodeType === 1) {
                    // if there are children or attributes we need a container
                    if(xmlFragment.attributes.length > 0 || xmlFragment.firstChild) {
                        if(!object[xmlFragment.nodeName])
                            object[xmlFragment.nodeName] = new Object();
                        var partialObject = object[xmlFragment.nodeName];
                        if(typeof map.key[xmlFragment.nodeName] === 'function') {
                            var key = map.key[xmlFragment.nodeName](xml, xmlFragment);
                            if(key) {
                                partialObject = partialObject[key] = new Object();
                                partialObject.id = key;
                                var name = xmlFragment.nodeName + listSuffix;
                                name = map.replacer ? map.replacer(name) : name;
                                // reference the object from the array
                                if(!object[name])
                                    object[name] = [];
                                object[name].push(key);
                            }
                        }
                        // process attributes
                        if (xmlFragment.attributes.length > 0) {
                            for (var j = 0; j < xmlFragment.attributes.length; j++) {
                                var attribute = xmlFragment.attributes.item(j);
                                partialObject[attribute.nodeName] = attribute.nodeValue;
                            }
                        }
                        // process children
                        var child = xmlFragment.firstChild;
                        if(child) objectifier(child, map, partialObject);
                    }
                }
                // text node
                else if(xmlFragment.nodeType === 3) {
                    // add content with underscore naming
                    if(xmlFragment.nodeValue)
                        object['_' + xmlFragment.parentNode.nodeName] = xmlFragment.nodeValue;
                }
                // process siblings
                var sibling = xmlFragment.nextSibling;
                if(sibling) objectifier(sibling, map, object);
                return object;
            }
            // just initialize and return the result
            return objectifier(xml.documentElement, map, {});
        },
        sisulate: function(xml, map, directive) {
            // objectify the xml
            var jsonObject = Sisulator.objectify(xml, map);
            // consistent with other line breaks and without comments
            jsonObject[map.root]._xml = xml.xml.replace(/(\r\n|\n|\r)/g, '\n').replace(/<!--[\s\S]*?-->/g, '');
            eval("var " + map.root + " = jsonObject." + map.root);
            // this variable holds the result
            var _sisula_ = '';
            // process and evaluate all sisulas in the directive
            var reader = new ActiveXObject("Scripting.FileSystemObject");
            var file = reader.OpenTextFile(directive);
            var scripts = file.ReadAll();
            file.Close();
            scripts = scripts.replace(/\r/g, ''); // unify line breaks
            // only non-empty lines that are not comments (starts with #)
            scripts = scripts.match(/^[^#].+/gm);
            if(scripts) {
                var script;
                var splitter = /\/\*~|~\*\//g; // split JS /*~ sisula template ~*/ JS
                // process every sisula
                for(var scriptIndex = 0; script = scripts[scriptIndex]; scriptIndex++) {
                    script = script.replace(/^\s+/,'').replace(/\s+$/,''); // trim
                    file = reader.OpenTextFile(script);
                    var sisula = file.ReadAll();
                    file.Close();
                    // make sure everything starts with JavaScript (empty row)
                    sisula = '\n' + sisula;
                    // split language into JavaScript and SQL template components
                    var sisulets = sisula.split(splitter);
                    // substitute from SQL template to JavaScript
                    for(var i = 1; i < sisulets.length; i+=2) {
                        // honor escaped dollar signs
                        sisulets[i] = sisulets[i].replace(/[$]{2}/g, '§DOLLAR§'); // escaping dollar signs
                        sisulets[i] = sisulets[i].replace(/["]{2}/g, '§DOUBLE§'); // escaping double quotes
                        sisulets[i] = sisulets[i].replace(/["]{1}/g, '§SINGLE§'); // escaping single quotes
                        sisulets[i] = sisulets[i].replace(/[$]{([\S\s]*?)}[$]/g, '" + $1 + "'); // multi-expression
                        sisulets[i] = sisulets[i].replace(/[$]\(([\S\s]*?)\)\?[^\S\n]*([^:\n]*)[:]?[^\S\n]*(.*)/g, '" + ($1 ? "$2" : "$3") + "'); // conditional
                        sisulets[i] = sisulets[i].replace(/[\$]([\w.]*?)(?:([\$])|([^\w.]|$))/g, '" + ($1 ? $1 : "") + "$3'); // single
                        sisulets[i] = sisulets[i].replace(/(\r\n|\n|\r)/g, '\\n" +\n'); // line breaks
                        sisulets[i] = sisulets[i].replace(/^/gm, '"'); // start of line
                        sisulets[i] = '_sisula_+=' + sisulets[i] + '";'; // variable assignment
                    }
                    // join the parts together again (now all JavaScript)
                    sisula = sisulets.join('');
                    try {
                        // this eval needs schema and _sisula_ to be defined
                        eval(sisula);
                    }
                    catch(e) {
                        LOG.nodeValue += 'Error in script: ' + script + '\r';
                        LOG.nodeValue += sisula + '\r';
                        ERROR = 42;
                        throw e;
                    }
                }
                _sisula_ = _sisula_.replace(/§DOLLAR§/g, '$'); // unescaping dollar signs
                _sisula_ = _sisula_.replace(/§SINGLE§/g, '\"'); // unescaping double quotes
                _sisula_ = _sisula_.replace(/§QUOTED§/g, '"'); // unescaping double quotes
                _sisula_ = _sisula_.replace(/^\s*[\r\n]/gm, ''); // remove empty lines
                _sisula_ = _sisula_.replace(/(\S+[^\S\n])(?:[^\S\n]+)/gm, '$1'); // consume multiple spaces, but not indentation
            }
            return _sisula_;
        }
    };

    // This is the main() where we start with parsing the command line
    var commandLineOptions = {
        _opts_:         {
                                // option, description, mandatory
            xmlFilename:        ['x', 'XML file made available as a JSON object in the sisulets.', true],
            mappingType:        ['m', 'XML to object mapping type.', true],
            directiveFilename:  ['d', 'Directive file specifying a list of sisulets that will be processed.', true],
            outputFilename:     ['o', 'Output file where the result is stored.', false]
        }
    };

    function window.onload() {
        LOG = document.createTextNode('');
        document.getElementById('log').appendChild(LOG);
        LOG.nodeValue += 'Starting ' + new Date().toLocaleString() + '\r';

        var o, option, description, map, list = 'Command line options:';
        var argumentString = HTA.commandLine.substring(HTA.commandLine.indexOf('"', 1) + 1);
        var arguments = argumentString.split(/\s-/);

        // if no arguments were provided then list the options and exit
        if(arguments == 0) {
            for(o in commandLineOptions._opts_) {
                option = commandLineOptions._opts_[o][0];
                description = commandLineOptions._opts_[o][1];
                list += '\r-' + option + '\t' + description;
            }
            list += '\r\rAvailable mapping types:'
            for(map in MAP) {
                list += '\r' + map + ', ' + MAP[map].description;
            }
            LOG.nodeValue += list + '\r';
            ERROR = 42;
        }

        // parse the given arguments
        var pattern, argument, delim = ';';
        var joinedArguments = arguments.join(delim);
        // LOG.nodeValue += 'joinedArguments: ' + joinedArguments + '\r';
        for(o in commandLineOptions._opts_) {
            option = commandLineOptions._opts_[o][0];
            if(joinedArguments.indexOf(option) >= 0) {
                pattern = new RegExp(option + '\\s([^' + delim + ']*)');
                argumentMatch = joinedArguments.match(pattern);
                if(argumentMatch) {
                    commandLineOptions[o] = argumentMatch[1];
                    // LOG.nodeValue += argumentMatch[1] + '\r';
                }
            }
        }

        // check mandatory options and exit if not provided
        var mandatory;
        for(o in commandLineOptions._opts_) {
            mandatory = commandLineOptions._opts_[o][2];
            if(mandatory) {
                if(!commandLineOptions[o] || commandLineOptions[o].length == 0) {
                    option = commandLineOptions._opts_[o][0];
                    description = commandLineOptions._opts_[o][1];
                    LOG.nodeValue += "The option -" + option + " is mandatory with the description:\r" + description + "\r";
                    ERROR = 42;
                }
            }
        }

        if(!ERROR) {
            // instantiate a DOM object at run time
            var xmlObject = new ActiveXObject("MSXML2.DOMDOCUMENT");
            xmlObject.async = false;
            xmlObject.resolveExternals = false;
            xmlObject.validateOnParse = false;
            var inputFilename = commandLineOptions.xmlFilename.replace(/"/g, '');
            LOG.nodeValue += 'Loading file: ' + inputFilename + '\r';
            // load an XML file into the DOM instance
            if(!xmlObject.load(inputFilename)) {
                LOG.nodeValue += "The XML file: " + inputFilename + " could not be loaded\r";
                if(xmlObject.parseError && xmlObject.parseError.reason) {
                    LOG.nodeValue += xmlObject.parseError.reason + "\r";
                }
                ERROR = 42;
            }
        }

        if(!ERROR) {
            // objectify the XML and apply the sisulets to get some output text
            var sisulaOutput = Sisulator.sisulate(
                                    xmlObject,
                                    MAP[commandLineOptions.mappingType],
                                    commandLineOptions.directiveFilename
                               );

            // save the output
            var outputFilename = commandLineOptions.outputFilename || commandLineOptions.directiveFilename + '.output';
            outputFilename = outputFilename.replace(/"/g, '');
            LOG.nodeValue += 'Writing file: ' + outputFilename + '\r';
            var adTypeBinary = 1;
            var adTypeText = 2;
            var adSaveCreateOverwrite = 2;
            var stream = new ActiveXObject("ADODB.Stream");
            stream.Type = adTypeText;
            stream.Charset = "utf-8";
            stream.Open();
            stream.WriteText(sisulaOutput);
            stream.Flush();
            stream.Position = 0;
            stream.Type = adTypeBinary;
            stream.Position = 3;
            var bomless = new ActiveXObject("ADODB.Stream");
            bomless.Open();
            bomless.Type = adTypeBinary;
            stream.CopyTo(bomless);
            stream.Close();
            bomless.SaveToFile(outputFilename, adSaveCreateOverwrite);
            bomless.Close();
        }

        LOG.nodeValue += 'Ending ' + new Date().toLocaleString() + '\r';
        // when debugging
        // ERROR = 42;
        if(ERROR) { window.moveTo(0, 0); window.focus(); }
        else window.close();
    }

    </script>
    </head>
    <body>
        <pre id="log"/>
    </body>
</html>