1 files changed, 204 insertions, 0 deletions

diff --git a/sinksh/syntax_modules/core_syntax.cpp b/sinksh/syntax_modules/core_syntax.cpp
new file mode 100644
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+++ b/sinksh/syntax_modules/core_syntax.cpp
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+/*
+ * 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 <QDebug>
+#include <QObject> // tr()
+#include <QSet>
+#include <QTextStream>
+
+#include "state.h"
+#include "syntaxtree.h"
+#include "utils.h"
+
+namespace CoreSyntax
+{
+
+bool exit(const QStringList &, State &)
+{
+    ::exit(0);
+    return true;
+}
+
+bool showHelp(const QStringList &commands, State &state)
+{
+    SyntaxTree::Command command = SyntaxTree::self()->match(commands);
+    if (commands.isEmpty()) {
+        state.printLine(QObject::tr("Welcome to the Sink command line tool!"));
+        state.printLine(QObject::tr("Top-level commands:"));
+
+        QSet<QString> sorted;
+        for (auto syntax: SyntaxTree::self()->syntax()) {
+            sorted.insert(syntax.keyword);
+        }
+
+        for (auto keyword: sorted) {
+            state.printLine(keyword, 1);
+        }
+    } else if (const Syntax *syntax = command.first) {
+        //TODO: get parent!
+        state.print(QObject::tr("Command `%1`").arg(syntax->keyword));
+
+        if (!syntax->help.isEmpty()) {
+            state.print(": " + syntax->help);
+        }
+        state.printLine();
+
+        if (!syntax->children.isEmpty()) {
+            state.printLine("Sub-commands:", 1);
+            QSet<QString> sorted;
+            for (auto childSyntax: syntax->children) {
+                sorted.insert(childSyntax.keyword);
+            }
+
+            for (auto keyword: sorted) {
+                state.printLine(keyword, 1);
+            }
+        }
+    } else {
+        state.printError("Unknown command: " + commands.join(" "));
+    }
+
+    return true;
+}
+
+QStringList showHelpCompleter(const QStringList &commands, const QString &fragment, State &)
+{
+    QStringList items;
+
+    for (auto syntax: SyntaxTree::self()->syntax()) {
+        if (syntax.keyword != QObject::tr("help") &&
+            (fragment.isEmpty() || syntax.keyword.startsWith(fragment))) {
+            items << syntax.keyword;
+        }
+    }
+
+    qSort(items);
+    return items;
+}
+
+bool setDebugLevel(const QStringList &commands, State &state)
+{
+    if (commands.count() != 1) {
+        state.printError(QObject::tr("Wrong number of arguments; expected 1 got %1").arg(commands.count()));
+        return false;
+    }
+
+    bool ok = false;
+    int level = commands[0].toUInt(&ok);
+
+    if (!ok) {
+        state.printError(QObject::tr("Expected a number between 0 and 6, got %1").arg(commands[0]));
+        return false;
+    }
+
+    state.setDebugLevel(level);
+    return true;
+}
+
+bool printDebugLevel(const QStringList &, State &state)
+{
+    state.printLine(QString::number(state.debugLevel()));
+    return true;
+}
+
+bool printCommandTiming(const QStringList &, State &state)
+{
+    state.printLine(state.commandTiming() ? QObject::tr("on") : QObject::tr("off"));
+    return true;
+}
+
+void printSyntaxBranch(State &state, const Syntax::List &list, int depth)
+{
+    if (list.isEmpty()) {
+        return;
+    }
+
+    if (depth > 0) {
+        state.printLine("\\", depth);
+    }
+
+    for (auto syntax: list) {
+        state.print("|-", depth);
+        state.printLine(syntax.keyword);
+        printSyntaxBranch(state, syntax.children, depth + 1);
+    }
+}
+
+bool printSyntaxTree(const QStringList &, State &state)
+{
+    printSyntaxBranch(state, SyntaxTree::self()->syntax(), 0);
+    return true;
+}
+
+bool setLoggingLevel(const QStringList &commands, State &state)
+{
+    if (commands.count() != 1) {
+        state.printError(QObject::tr("Wrong number of arguments; expected 1 got %1").arg(commands.count()));
+        return false;
+    }
+
+    state.setLoggingLevel(commands.at(0));
+    return true;
+}
+
+bool printLoggingLevel(const QStringList &commands, State &state)
+{
+    const QString level = state.loggingLevel();
+    state.printLine(level);
+    return true;
+}
+
+Syntax::List syntax()
+{
+    Syntax::List syntax;
+    syntax << Syntax("exit", QObject::tr("Exits the application. Ctrl-d also works!"), &CoreSyntax::exit);
+
+    Syntax help("help", QObject::tr("Print command information: help [command]"), &CoreSyntax::showHelp);
+    help.completer = &CoreSyntax::showHelpCompleter;
+    syntax << help;
+
+    syntax << Syntax("syntaxtree", QString(), &printSyntaxTree);
+
+    Syntax set("set", QObject::tr("Sets settings for the session"));
+    set.children << Syntax("debug", QObject::tr("Set the debug level from 0 to 6"), &CoreSyntax::setDebugLevel);
+
+    Syntax setTiming = Syntax("timing", QObject::tr("Whether or not to print the time commands take to complete"));
+    setTiming.children << Syntax("on", QString(), [](const QStringList &, State &state) -> bool { state.setCommandTiming(true); return true; });
+    setTiming.children << Syntax("off", QString(), [](const QStringList &, State &state) -> bool { state.setCommandTiming(false); return true; });
+    set.children << setTiming;
+
+    Syntax logging("logging", QObject::tr("Set the logging level to one of Trace, Log, Warning or Error"), &CoreSyntax::setLoggingLevel);
+    logging.completer = [](const QStringList &, const QString &fragment, State &state) -> QStringList { return Utils::filteredCompletions(QStringList() << "trace" << "log" << "warning" << "error", fragment, Qt::CaseInsensitive); };
+    set.children << logging;
+
+    syntax << set;
+
+    Syntax get("get", QObject::tr("Gets settings for the session"));
+    get.children << Syntax("debug", QObject::tr("The current debug level from 0 to 6"), &CoreSyntax::printDebugLevel);
+    get.children << Syntax("timing", QObject::tr("Whether or not to print the time commands take to complete"), &CoreSyntax::printCommandTiming);
+    get.children << Syntax("logging", QObject::tr("The current logging level"), &CoreSyntax::printLoggingLevel);
+    syntax << get;
+
+    return syntax;
+}
+
+REGISTER_SYNTAX(CoreSyntax)
+
+} // namespace CoreSyntax
+