vastly simplify by getting rid of Module as a base class

just a move slightly more towards functional

1 files changed, 85 insertions, 0 deletions

diff --git a/akonadi2_cli/modules/core_syntax.cpp b/akonadi2_cli/modules/core_syntax.cpp
new file mode 100644
index 0000000..8324c31
--- /dev/null
+++ b/akonadi2_cli/modules/core_syntax.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2014 Aaron Seigo <aseigo@kde.org>
+ *
+ *   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 of the License, or
+ *   (at your option) any later version.
+ *
+ *   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, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#include "core_syntax.h"
+
+#include <QObject> // tr()
+#include <QSet>
+#include <QTextStream>
+
+namespace CoreSyntax
+{
+
+Module::SyntaxList syntax()
+{
+    Module::SyntaxList syntax;
+    syntax << Module::Syntax("exit", QObject::tr("Exits the application. Ctrl-d also works!"), &CoreSyntax::exit);
+    syntax << Module::Syntax(QObject::tr("help"), QObject::tr("Print command information: help [command]"), &CoreSyntax::showHelp);
+    return syntax;
+}
+
+bool exit(const QStringList &, State &)
+{
+    ::exit(0);
+    return true;
+}
+
+bool showHelp(const QStringList &commands, State &)
+{
+    Module::Command command = Module::self()->match(commands);
+    QTextStream stream(stdout);
+    if (commands.isEmpty()) {
+        stream << QObject::tr("Welcome to the Akonadi2 command line tool!") << "\n";
+        stream << QObject::tr("Top-level commands:") << "\n";
+        QSet<QString> sorted;
+        for (auto syntax: Module::self()->syntax()) {
+            sorted.insert(syntax.keyword);
+        }
+
+        for (auto keyword: sorted) {
+            stream << "\t" << keyword << "\n";
+        }
+    } else if (const Module::Syntax *syntax = command.first) {
+        //TODO: get parent!
+        stream << QObject::tr("Command `%1`").arg(syntax->keyword);
+
+        if (!syntax->help.isEmpty()) {
+            stream << ": " << syntax->help;
+        }
+        stream << "\n";
+
+        if (!syntax->children.isEmpty()) {
+            stream << "\tSub-commands:\n";
+            QSet<QString> sorted;
+            for (auto childSyntax: syntax->children) {
+                sorted.insert(childSyntax.keyword);
+            }
+
+            for (auto keyword: sorted) {
+                stream << "\t" << keyword << "\n";
+            }
+        }
+    } else {
+        stream << "Unknown command: " << commands.join(" ") << "\n";
+    }
+    return true;
+}
+
+} // namespace CoreSyntax
+