Add ability to export databases to CSV files.

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

Closes #57

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("\"");
+}