forked from qt-creator/qt-creator
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "cdbpromptthread.h"
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#include <cstdio>
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#include <QtCore/QDebug>
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static const char help[] =
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"Special commands:\n\n"
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"H Display Help\n"
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"q Quit\n"
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"E expression Evaluate C++expression\n"
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"S binary args Start binary\n"
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"I Interrupt\n"
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"G Go\n"
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"\nThe remaining commands are passed to CDB.\n";
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CdbPromptThread::CdbPromptThread(QObject *parent) :
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QThread(parent)
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{
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}
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void CdbPromptThread::run()
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{
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enum { bufSize =1024 };
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QString cmd;
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char buf[bufSize];
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std::putc('>', stdout);
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while (true) {
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if (std::fgets(buf, bufSize, stdin) == NULL)
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break;
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cmd += QString::fromLatin1(buf);
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if (cmd.endsWith(QLatin1Char('\n'))) {
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cmd.truncate(cmd.size() - 1);
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if (!cmd.isEmpty() && !handleCommand(cmd.trimmed()))
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break;
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cmd.clear();
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}
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std::putc('>', stdout);
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}
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}
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// Determine the command
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static Command evaluateCommand(const QString &cmdToken)
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{
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if (cmdToken.size() == 1) {
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switch(cmdToken.at(0).toAscii()) {
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case 'I':
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return Async_Interrupt;
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case 'E':
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return Sync_EvalExpression;
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case 'G':
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return Execution_Go;
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case 'S':
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return Execution_StartBinary;
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default:
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break;
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}
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return UnknownCommand;
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}
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return UnknownCommand;
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}
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// Chop off command and return argument list
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static Command parseCommand(QString *s)
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{
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if (s->isEmpty())
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return UnknownCommand;
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int firstBlank = s->indexOf(QLatin1Char(' '));
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// No further arguments
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if (firstBlank == -1) {
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const Command rc1 = evaluateCommand(*s);
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if (rc1 != UnknownCommand) // pass through debugger cmds
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s->clear();
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return rc1;
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}
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// Chop
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const Command rc = evaluateCommand(s->left(firstBlank));
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if (rc != UnknownCommand) { // pass through debugger cmds)
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int nextToken = firstBlank + 1;
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for ( ; nextToken < s->size() && s->at(nextToken).isSpace(); nextToken++) ;
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s->remove(0, nextToken);
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}
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return rc;
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}
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bool CdbPromptThread::handleCommand(QString cmd)
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{
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if (cmd == QLatin1String("q"))
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return false;
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if (cmd == QLatin1String("H")) {
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std::fputs(help, stdout);
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return true;
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}
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const Command c = parseCommand(&cmd);
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if (c & AsyncCommand) {
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emit asyncCommand(c, cmd);
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return true;
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}
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if (c & ExecutionCommand) {
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emit executionCommand(c, cmd);
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return true;
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}
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// Let Unknown default to sync exeute
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emit syncCommand(c, cmd);
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return true;
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}
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