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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);
}
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
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