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#include "xmlcustomcode.h" |
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|
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XmlCustomCode* XmlCustomCode::uniqueInstance = NULL; |
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|
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QScriptValue echo(QScriptContext *context, QScriptEngine*) |
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{ |
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std::cout << context->argument(0).toString().toUtf8().constData() << std::endl; |
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|
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return ""; |
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} |
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XmlCustomCode::XmlCustomCode(): numThreads(QThread::idealThreadCount()) |
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{ |
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myThreadPool.setMaxThreadCount(numThreads); |
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myThreadPool.setExpiryTimeout(-1); // don't let threads expire |
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|
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// create individual thread script engines |
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this->jsScriptEngines.reserve(this->numThreads); |
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|
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QString jsxmlString; |
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QFile jsxmlfile(":/resources/libs/jsxml.js"); |
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jsxmlfile.open(QFile::ReadOnly | QFile::Text); |
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|
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jsxmlString=QTextStream(&jsxmlfile).readAll(); |
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for(int i=0; i<this->numThreads; i++){ |
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jsCustomCodeEngine e; |
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e.scriptEngine = new QScriptEngine(); |
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e.jsFunction = new QScriptValue(); |
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|
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// main needs to be called so the user code is evaluated |
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// alternatively you can do: myFunc=engine.evaluate('(function main(){})'); myFunc.call(); |
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// Note the () around the function |
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e.getXmlDataFunction = new QScriptValue(e.scriptEngine->evaluate("(function getXmlData() { return $xmlData; })")); |
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e.setXmlDataFunction = new QScriptValue(e.scriptEngine->evaluate("(function setXmlData(newXmlData) { $xmlData=newXmlData; })")); |
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e.isAvailable = true; |
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|
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// Add echo function so user can debug the code |
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QScriptValue echoFunction = e.scriptEngine->newFunction(echo); |
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e.scriptEngine->globalObject().setProperty("echo", echoFunction); |
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|
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// Add the js library for XmlEditing |
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e.scriptEngine->evaluate(jsxmlString); |
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|
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this->jsScriptEngines.append(e); |
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} |
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} |
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|
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XmlCustomCode* XmlCustomCode::getInstance(){ |
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if (uniqueInstance==NULL){ // allow only one instance |
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uniqueInstance = new XmlCustomCode(); |
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} |
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return uniqueInstance; |
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} |
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|
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void XmlCustomCode::executeCustomCode(const QString &jsString, const QVector<QString> &filesToProcess, const bool backupsEnabled, const bool verboseEnabled){ |
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|
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// Reconstruct script functions |
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for(int i=0; i<this->numThreads; i++){ |
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*(jsScriptEngines[i].jsFunction) = jsScriptEngines.at(i).scriptEngine->evaluate("(function main() {"+jsString+"})"); |
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} |
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QString currXmlFileString; |
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QScriptValue engineResult; // variable to check for js_errors |
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double elapsed_secs=0; // elapsed seconds that a user script took |
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clock_t begin; // seconds that a script started |
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// Single tread if small number of files or number of threads = 1 |
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if(filesToProcess.size()<=CUSTOM_FILES_PER_THREAD || numThreads == 1){ |
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jsCustomCodeEngine &jsEngine = getAvailableJsEngine(); |
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// Process all XmlFiles |
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for(int i=0; i<filesToProcess.size(); i++){ |
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customCodeUnwinding(filesToProcess.at(i),currXmlFileString,*jsEngine.scriptEngine,begin,elapsed_secs,engineResult, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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} |
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} |
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else{ // Multithread if there are many files |
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// Process all XmlFiles |
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QVector<QFuture<void>> executingThreads; |
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for(int i=0; i<=filesToProcess.size()-CUSTOM_FILES_PER_THREAD; i+=CUSTOM_FILES_PER_THREAD){ |
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executingThreads << |
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QtConcurrent::run(&this->myThreadPool, [=]() |
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{ |
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mutexIsAvailable.lock(); |
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jsCustomCodeEngine &jsEngine = getAvailableJsEngine(); |
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jsEngine.isAvailable = false; |
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mutexIsAvailable.unlock(); |
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|
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QString currXmlFileStringThread; |
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|
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QScriptValue engineResultThread; // variable to check for js_errors |
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double elapsedSecsThread=0; // elapsed seconds that a user script took |
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clock_t beginThread; // seconds that a script started |
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customCodeUnwinding(filesToProcess.at(i),currXmlFileStringThread,*jsEngine.scriptEngine,beginThread,elapsedSecsThread,engineResultThread, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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|
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customCodeUnwinding(filesToProcess.at(i+1),currXmlFileStringThread,*jsEngine.scriptEngine,beginThread,elapsedSecsThread,engineResultThread, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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|
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customCodeUnwinding(filesToProcess.at(i+2),currXmlFileStringThread,*jsEngine.scriptEngine,beginThread,elapsedSecsThread,engineResultThread, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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|
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customCodeUnwinding(filesToProcess.at(i+3),currXmlFileStringThread,*jsEngine.scriptEngine,beginThread,elapsedSecsThread,engineResultThread, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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|
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mutexIsAvailable.lock(); |
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jsEngine.isAvailable = true; |
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mutexIsAvailable.unlock(); |
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}); |
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} |
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|
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// Wait for all threads to finish |
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for(QFuture<void> &f :executingThreads){ |
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f.waitForFinished(); |
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} |
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if(filesToProcess.size()%CUSTOM_FILES_PER_THREAD!=0){ |
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int alreadyProcessedFiles=(filesToProcess.size()/CUSTOM_FILES_PER_THREAD)*CUSTOM_FILES_PER_THREAD; |
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jsCustomCodeEngine &jsEngine = getAvailableJsEngine(); |
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for(int i=alreadyProcessedFiles; i<filesToProcess.size(); i++){ |
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customCodeUnwinding(filesToProcess.at(i),currXmlFileString,*jsEngine.scriptEngine,begin,elapsed_secs,engineResult, |
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*jsEngine.jsFunction,*jsEngine.getXmlDataFunction,*jsEngine.setXmlDataFunction,backupsEnabled,verboseEnabled); |
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} |
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} |
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} |
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} |
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|
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void XmlCustomCode::displayJsException(QScriptEngine &engine, QScriptValue &engineResult){ |
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if (engine.hasUncaughtException()) { |
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UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","Uncaught js exception (user code) at line " +QString::number(engine.uncaughtExceptionLineNumber()) + ":\n" + engineResult.toString()); |
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} |
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} |
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|
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XmlCustomCode::jsCustomCodeEngine& XmlCustomCode::getAvailableJsEngine(){ |
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for(jsCustomCodeEngine &e : this->jsScriptEngines){ |
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if(e.isAvailable){ |
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return e; |
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} |
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} |
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|
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throw std::runtime_error("Could't find an available js engine for custom command."); |
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} |
