1 files changed, 91 insertions, 0 deletions

diff --git a/sinksh/repl/repl.cpp b/sinksh/repl/repl.cpp
new file mode 100644
index 0000000..21209fc
--- /dev/null
+++ b/sinksh/repl/repl.cpp
@@ -0,0 +1,91 @@
+/*
+ * 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 "repl.h"
+
+#include <readline/history.h>
+
+#include <QDir>
+#include <QFile>
+#include <QFinalState>
+#include <QStandardPaths>
+#include <QTextStream>
+
+#include "replStates.h"
+#include "syntaxtree.h"
+
+Repl::Repl(QObject *parent)
+    : QStateMachine(parent)
+{
+    // readline history setup
+    using_history();
+    read_history(commandHistoryPath().toLocal8Bit());
+
+    // create all states
+    ReadState *read = new ReadState(this);
+    UnfinishedReadState *unfinishedRead = new UnfinishedReadState(this);
+    EvalState *eval = new EvalState(this);
+    PrintState *print = new PrintState(this);
+    QFinalState *final = new QFinalState(this);
+
+    // connect the transitions
+    read->addTransition(read, SIGNAL(command(QString)), eval);
+    read->addTransition(read, SIGNAL(exitRequested()), final);
+
+    unfinishedRead->addTransition(unfinishedRead, SIGNAL(command(QString)), eval);
+    unfinishedRead->addTransition(unfinishedRead, SIGNAL(exitRequested()), final);
+
+    eval->addTransition(eval, SIGNAL(completed()), read);
+    eval->addTransition(eval, SIGNAL(continueInput()), unfinishedRead);
+    eval->addTransition(eval, SIGNAL(output(QString)), print);
+
+    print->addTransition(print, SIGNAL(completed()), eval);
+
+    setInitialState(read);
+    printWelcomeBanner();
+    start();
+}
+
+Repl::~Repl()
+{
+    // readline history writing
+    write_history(commandHistoryPath().toLocal8Bit());
+}
+
+void Repl::printWelcomeBanner()
+{
+    QTextStream out(stdout);
+    out << QObject::tr("Welcome to the Sink interative shell!\n");
+    out << QObject::tr("Type `help` for information on the available commands.\n");
+    out.flush();
+}
+
+QString Repl::commandHistoryPath()
+{
+    const QString path = QStandardPaths::writableLocation(QStandardPaths::DataLocation);
+
+    if (!QFile::exists(path)) {
+        QDir dir;
+        dir.mkpath(path);
+    }
+
+    return  path + "/repl_history";
+}
+
+#include "moc_repl.cpp"