Add findFiles method

Task-number: QTIFW-1094
Change-Id: Ibc37e9b568f7f54e37f6ed6a5b040940cab5aebd
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Iikka Eklund <iikka.eklund@qt.io>

doc/scripting-api/qdesktopservices.qdoc

@@ -99,3 +99,11 @@
 
     Returns the specified \a location.
 */
+
+/*!
+    \qmlmethod array QDesktopServices::findFiles(string path, string pattern)
+
+    Returns file names matching \a pattern. Searches the files recursively from \a path.
+    \a Pattern understands * and ? wildcards.
+*/
+

src/libs/installer/scriptengine.cpp

@@ -72,6 +72,28 @@ QJSValue InstallerProxy::componentByName(const QString &componentName)
     return QJSValue();
 }
 
+QJSValue QDesktopServicesProxy::findFiles(const QString &path, const QString &pattern)
+{
+    QStringList result;
+    findRecursion(path, pattern, &result);
+
+    QJSValue scriptComponentsObject = m_engine->newArray(result.count());
+    for (int i = 0; i < result.count(); ++i) {
+        scriptComponentsObject.setProperty(i, result.at(i));
+    }
+    return scriptComponentsObject;
+}
+
+void QDesktopServicesProxy::findRecursion(const QString &path, const QString &pattern, QStringList *result)
+{
+    QDir currentDir(path);
+    const QString prefix = path + QLatin1Char('/');
+    foreach (const QString &match, currentDir.entryList(QStringList(pattern), QDir::Files | QDir::NoSymLinks))
+        result->append(prefix + match);
+    foreach (const QString &dir, currentDir.entryList(QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot))
+        findRecursion(prefix + dir, pattern, result);
+}
+
 GuiProxy::GuiProxy(ScriptEngine *engine, QObject *parent) :
     QObject(parent),
     m_engine(engine),
@@ -526,7 +548,7 @@ QJSValue ScriptEngine::generateDesktopServicesObject()
     SETPROPERTY(desktopServices, GenericCacheLocation, QStandardPaths)
     SETPROPERTY(desktopServices, GenericConfigLocation, QStandardPaths)
 
-    QJSValue object = m_engine.newQObject(new QDesktopServicesProxy);
+    QJSValue object = m_engine.newQObject(new QDesktopServicesProxy(this));
     object.setPrototype(desktopServices);   // attach the properties
     return object;
 }

src/libs/installer/scriptengine_p.h

@@ -93,7 +93,8 @@ class QDesktopServicesProxy : public QObject
     Q_DISABLE_COPY(QDesktopServicesProxy)
 
 public:
-    QDesktopServicesProxy() {}
+    QDesktopServicesProxy(ScriptEngine *engine)
+        : m_engine(engine){}
 
 public slots :
     bool openUrl(const QString &url) const {
@@ -108,6 +109,13 @@ public slots :
     QString storageLocation(qint32 location) const {
         return QStandardPaths::writableLocation(QStandardPaths::StandardLocation(location));
     }
+    QJSValue findFiles(const QString &path, const QString &pattern);
+
+private:
+    void findRecursion(const QString &path, const QString &pattern, QStringList *result);
+
+private:
+    ScriptEngine *m_engine;
 };
 
 #if QT_VERSION < 0x050400

tests/auto/installer/scriptengine/tst_scriptengine.cpp

@@ -198,6 +198,7 @@ private slots:
         m_core.appendRootComponent(component);
 
         m_scriptEngine = m_core.componentScriptEngine();
+        m_applicatonDirPath = qApp->applicationDirPath();
     }
 
     void testDefaultScriptEngineValues()
@@ -234,6 +235,8 @@ private slots:
             .hasProperty(QLatin1String("displayName")), true);
         QCOMPARE(global.property(QLatin1String("QDesktopServices"))
             .hasProperty(QLatin1String("storageLocation")), true);
+        QCOMPARE(global.property(QLatin1String("QDesktopServices"))
+                 .hasProperty(QLatin1String("findFiles")), true);
 
         QCOMPARE(global.hasProperty(QLatin1String("buttons")), true);
         QCOMPARE(global.hasProperty(QLatin1String("QInstaller")), true);
@@ -342,6 +345,30 @@ private slots:
       }
     }
 
+    void testFindFiles()
+    {
+        const QString expectedOutput = QString::fromLatin1("Found file %1/tst_scriptengine.moc").arg(m_applicatonDirPath);
+        QByteArray array = expectedOutput.toLatin1();
+        const char *c_str2 = array.data();
+
+        setExpectedScriptOutput(c_str2);
+        const QString script = QString::fromLatin1("var directory = \"C:/Qt/test\";"
+                                                   "\n"
+                                                   "var pattern = \"*.moc\";"
+                                                   "\n"
+                                                   "var fileArray = QDesktopServices.findFiles('%1', pattern)"
+                                                   "\n"
+                                                   "for (i = 0; i < fileArray.length; i++) {"
+                                                   "print(\"Found file \"+fileArray[i]);"
+                                                   "}").arg(m_applicatonDirPath);
+        const QJSValue result = m_scriptEngine->evaluate(script);
+        qDebug()<<result.isArray();
+        qDebug()<<result.isObject();
+        qDebug()<<result.isString();
+        qDebug()<<result.isVariant();
+        QCOMPARE(result.isError(), false);
+    }
+
     void loadSimpleComponentScript()
     {
        try {
@@ -585,6 +612,7 @@ private:
     PackageManagerCore m_core;
     Component *m_component;
     ScriptEngine *m_scriptEngine;
+    QString m_applicatonDirPath;
 
 };