Add ability to export databases to CSV files.

Based on implementation by Florian Geyer <blueice@fobos.de>

Closes #57

src/CMakeLists.txt

@@ -61,6 +61,7 @@ set(keepassx_SOURCES
     crypto/SymmetricCipher.cpp
     crypto/SymmetricCipherBackend.h
     crypto/SymmetricCipherGcrypt.cpp
+    format/CsvExporter.cpp
     format/KeePass1.h
     format/KeePass1Reader.cpp
     format/KeePass2.h

src/format/CsvExporter.cpp

@@ -0,0 +1,103 @@
+/*
+ *  Copyright (C) 2015 Florian Geyer <blueice@fobos.de>
+ *  Copyright (C) 2015 Felix Geyer <debfx@fobos.de>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CsvExporter.h"
+
+#include <QFile>
+
+#include "core/Database.h"
+#include "core/Group.h"
+
+bool CsvExporter::exportDatabase(const QString& filename, const Database* db)
+{
+    QFile file(filename);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+        m_error = file.errorString();
+        return false;
+    }
+    return exportDatabase(&file, db);
+}
+
+bool CsvExporter::exportDatabase(QIODevice* device, const Database* db)
+{
+    QString header;
+    addColumn(header, "Group");
+    addColumn(header, "Title");
+    addColumn(header, "Username");
+    addColumn(header, "Password");
+    addColumn(header, "URL");
+    addColumn(header, "Notes");
+    header.append("\n");
+
+    if (device->write(header.toUtf8()) == -1) {
+        m_error = device->errorString();
+        return false;
+    }
+
+    return writeGroup(device, db->rootGroup());
+}
+
+QString CsvExporter::errorString() const
+{
+    return m_error;
+}
+
+bool CsvExporter::writeGroup(QIODevice* device, const Group* group, QString groupPath)
+{
+    if (!groupPath.isEmpty()) {
+        groupPath.append("/");
+    }
+    groupPath.append(group->name());
+
+    Q_FOREACH (const Entry* entry, group->entries()) {
+        QString line;
+
+        addColumn(line, groupPath);
+        addColumn(line, entry->title());
+        addColumn(line, entry->username());
+        addColumn(line, entry->password());
+        addColumn(line, entry->url());
+        addColumn(line, entry->notes());
+
+        line.append("\n");
+
+        if (device->write(line.toUtf8()) == -1) {
+            m_error = device->errorString();
+            return false;
+        }
+    }
+
+    Q_FOREACH (const Group* child, group->children()) {
+        if (!writeGroup(device, child, groupPath)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+void CsvExporter::addColumn(QString& str, const QString& column)
+{
+    if (!str.isEmpty()) {
+        str.append(",");
+    }
+
+    str.append("\"");
+    str.append(QString(column).replace("\"", "\"\""));
+    str.append("\"");
+}

src/format/CsvExporter.h

@@ -0,0 +1,42 @@
+/*
+ *  Copyright (C) 2015 Florian Geyer <blueice@fobos.de>
+ *  Copyright (C) 2015 Felix Geyer <debfx@fobos.de>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef KEEPASSX_CSVEXPORTER_H
+#define KEEPASSX_CSVEXPORTER_H
+
+#include <QString>
+
+class Database;
+class Group;
+class QIODevice;
+
+class CsvExporter
+{
+public:
+    bool exportDatabase(const QString& filename, const Database* db);
+    bool exportDatabase(QIODevice* device, const Database* db);
+    QString errorString() const;
+
+private:
+    bool writeGroup(QIODevice* device, const Group* group, QString groupPath = QString());
+    void addColumn(QString& str, const QString& column);
+
+    QString m_error;
+};
+
+#endif // KEEPASSX_CSVEXPORTER_H

src/gui/DatabaseTabWidget.cpp

@@ -26,6 +26,7 @@
 #include "core/Group.h"
 #include "core/Metadata.h"
 #include "core/qsavefile.h"
+#include "format/CsvExporter.h"
 #include "gui/DatabaseWidget.h"
 #include "gui/DatabaseWidgetStateSync.h"
 #include "gui/DragTabBar.h"
@@ -399,6 +400,27 @@ bool DatabaseTabWidget::saveDatabaseAs(int index)
     return saveDatabaseAs(indexDatabase(index));
 }
 
+void DatabaseTabWidget::exportToCsv()
+{
+    Database* db = indexDatabase(currentIndex());
+    if (!db) {
+        Q_ASSERT(false);
+        return;
+    }
+
+    QString fileName = fileDialog()->getSaveFileName(this, tr("Export database to CSV file"),
+                                                     QString(), tr("CSV file").append(" (*.csv)"));
+    if (fileName.isEmpty()) {
+        return;
+    }
+
+    CsvExporter csvExporter;
+    if (!csvExporter.exportDatabase(fileName, db)) {
+        MessageBox::critical(this, tr("Error"), tr("Writing the CSV file failed.") + "\n\n"
+                             + csvExporter.errorString());
+    }
+}
+
 void DatabaseTabWidget::changeMasterKey()
 {
     currentDatabaseWidget()->switchToMasterKeyChange();

src/gui/DatabaseTabWidget.h

@@ -66,6 +66,7 @@ public Q_SLOTS:
     void importKeePass1Database();
     bool saveDatabase(int index = -1);
     bool saveDatabaseAs(int index = -1);
+    void exportToCsv();
     bool closeDatabase(int index = -1);
     void closeDatabaseFromSender();
     bool closeAllDatabases();

src/gui/MainWindow.cpp

@@ -163,6 +163,8 @@ MainWindow::MainWindow()
             SLOT(changeDatabaseSettings()));
     connect(m_ui->actionImportKeePass1, SIGNAL(triggered()), m_ui->tabWidget,
             SLOT(importKeePass1Database()));
+    connect(m_ui->actionExportCsv, SIGNAL(triggered()), m_ui->tabWidget,
+            SLOT(exportToCsv()));
     connect(m_ui->actionLockDatabases, SIGNAL(triggered()), m_ui->tabWidget,
             SLOT(lockDatabases()));
     connect(m_ui->actionQuit, SIGNAL(triggered()), SLOT(close()));
@@ -303,6 +305,7 @@ void MainWindow::setMenuActionState(DatabaseWidget::Mode mode)
             m_ui->actionChangeDatabaseSettings->setEnabled(true);
             m_ui->actionDatabaseSave->setEnabled(true);
             m_ui->actionDatabaseSaveAs->setEnabled(true);
+            m_ui->actionExportCsv->setEnabled(true);
             break;
         }
         case DatabaseWidget::EditMode:
@@ -326,6 +329,7 @@ void MainWindow::setMenuActionState(DatabaseWidget::Mode mode)
             m_ui->actionChangeDatabaseSettings->setEnabled(false);
             m_ui->actionDatabaseSave->setEnabled(false);
             m_ui->actionDatabaseSaveAs->setEnabled(false);
+            m_ui->actionExportCsv->setEnabled(false);
             break;
         default:
             Q_ASSERT(false);
@@ -354,6 +358,7 @@ void MainWindow::setMenuActionState(DatabaseWidget::Mode mode)
         m_ui->actionDatabaseSaveAs->setEnabled(false);
 
         m_ui->actionDatabaseClose->setEnabled(false);
+        m_ui->actionExportCsv->setEnabled(false);
     }
 
     bool inDatabaseTabWidgetOrWelcomeWidget = inDatabaseTabWidget || inWelcomeWidget;

src/gui/MainWindow.ui

@@ -120,6 +120,7 @@
     <addaction name="actionChangeDatabaseSettings"/>
     <addaction name="separator"/>
     <addaction name="actionImportKeePass1"/>
+    <addaction name="actionExportCsv"/>
     <addaction name="separator"/>
     <addaction name="actionQuit"/>
    </widget>
@@ -413,6 +414,14 @@
     <string>Notes</string>
    </property>
   </action>
+  <action name="actionExportCsv">
+   <property name="enabled">
+    <bool>false</bool>
+   </property>
+   <property name="text">
+    <string>Export to CSV file</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>