source: trunk/src/scripttools/debugging/qscriptdebuggerconsole.cpp@ 506

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtSCriptTools module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qscriptdebuggerconsole_p.h"
#include "qscriptdebuggerconsolecommandjob_p.h"
#include "qscriptdebuggerconsolecommandmanager_p.h"
#include "qscriptdebuggerscriptedconsolecommand_p.h"
#include "qscriptmessagehandlerinterface_p.h"

#include <QtCore/qdir.h>
#include <QtCore/qfileinfo.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdebug.h>
#include <QtScript/qscriptengine.h>

QT_BEGIN_NAMESPACE

/*!
  \since 4.5
  \class QScriptDebuggerConsole
  \internal

  \brief The QScriptDebuggerConsole class provides the core functionality of a debugger console.
*/

class QScriptDebuggerConsolePrivate
{
    Q_DECLARE_PUBLIC(QScriptDebuggerConsole)
public:
    QScriptDebuggerConsolePrivate(QScriptDebuggerConsole*);
    ~QScriptDebuggerConsolePrivate();

    void loadScriptedCommands(const QString &scriptsPath,
                              QScriptMessageHandlerInterface *messageHandler);
    QScriptDebuggerConsoleCommandJob *createJob(
        const QString &command,
        QScriptMessageHandlerInterface *messageHandler,
        QScriptDebuggerCommandSchedulerInterface *commandScheduler);

    QScriptDebuggerConsoleCommandManager *commandManager;
    QString commandPrefix;
    QString input;
    QStringList commandHistory;
    int currentFrameIndex;
    qint64 currentScriptId;
    int currentLineNumber;
    int evaluateAction;
    qint64 sessionId;

    QScriptDebuggerConsole *q_ptr;
};

QScriptDebuggerConsolePrivate::QScriptDebuggerConsolePrivate(QScriptDebuggerConsole* parent)
    : q_ptr(parent)
{
    sessionId = 0;
    currentFrameIndex = 0;
    currentScriptId = -1;
    currentLineNumber = -1;
    evaluateAction = 0;
    commandPrefix = QLatin1String(".");
    commandManager = new QScriptDebuggerConsoleCommandManager();
}

QScriptDebuggerConsolePrivate::~QScriptDebuggerConsolePrivate()
{
    delete commandManager;
}

/*!
  Loads command definitions from scripts located in the given \a scriptsPath.
*/
void QScriptDebuggerConsolePrivate::loadScriptedCommands(
    const QString &scriptsPath,
    QScriptMessageHandlerInterface *messageHandler)
{
    QDir dir(scriptsPath);
    QFileInfoList entries = dir.entryInfoList(QStringList()
                                              << QLatin1String("*.qs"));
    for (int i = 0; i < entries.size(); ++i) {
        const QFileInfo &fi = entries.at(i);
        QString fileName = fi.fileName();
        QFile file(scriptsPath + QLatin1Char('/') + fileName);
        if (!file.open(QIODevice::ReadOnly))
            continue;
        QTextStream stream(&file);
        QString program = stream.readAll();
        QScriptDebuggerScriptedConsoleCommand *command;
        command = QScriptDebuggerScriptedConsoleCommand::parse(
            program, fileName, messageHandler);
        if (!command)
            continue;
        commandManager->addCommand(command);
    }
}


/*!
  Creates a job that will execute the given debugger \a command.
  Returns the new job, or 0 if the command is undefined.
*/
QScriptDebuggerConsoleCommandJob *QScriptDebuggerConsolePrivate::createJob(
    const QString &command, QScriptMessageHandlerInterface *messageHandler,
    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
{
    QString name;
    int i = command.indexOf(QLatin1Char(' '));
    if (i == -1) {
        name = command;
        i = name.size();
    } else {
        name = command.left(i);
    }
    if (name.isEmpty())
        return 0;
    QScriptDebuggerConsoleCommand *cmd = commandManager->findCommand(name);
    if (!cmd) {
        // try to auto-complete
        QStringList completions = commandManager->completions(name);
        if (!completions.isEmpty()) {
            if (completions.size() > 1) {
                QString msg;
                msg.append(QString::fromLatin1("Ambiguous command \"%0\": ")
                           .arg(name));
                for (int j = 0; j < completions.size(); ++j) {
                    if (j > 0)
                        msg.append(QString::fromLatin1(", "));
                    msg.append(completions.at(j));
                }
                msg.append(QString::fromLatin1("."));
                messageHandler->message(QtWarningMsg, msg);