Integrate tool-specific help into general help.

This is done by calling "qbs-<command> --help" when "qbs help <command>"
has been entered (after trying the internal commands).

Change-Id: I7eaf0cd2a7c6774c5edd3cc83a5a88d45ba577e8
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/app/qbs/qbstool.cpp b/src/app/qbs/qbstool.cpp
new file mode 100644
index 000000000..512e2ed9b
--- /dev/null
+++ b/src/app/qbs/qbstool.cpp
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Build Suite.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+#include "qbstool.h"
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QProcess>
+
+#include <iostream>
+
+static QString toolPrefix() { return QLatin1String("qbs-"); }
+static QString qbsBinDir() { return QCoreApplication::applicationDirPath(); }
+
+static QString qbsToolFilePath(const QString &toolName)
+{
+    return qbsBinDir() + QLatin1Char('/') + toolPrefix() + toolName;
+}
+
+void QbsTool::runTool(const QString &toolName, const QStringList &arguments)
+{
+    m_failedToStart = m_failedToFinish = false;
+    m_exitCode = -1;
+    QProcess toolProc;
+    toolProc.start(qbsToolFilePath(toolName), arguments);
+    if (!toolProc.waitForStarted())
+        m_failedToStart = true;
+     if (!toolProc.waitForFinished())
+        m_failedToFinish = true;
+    m_exitCode = toolProc.exitCode();
+    m_stdout = QString::fromLocal8Bit(toolProc.readAllStandardOutput());
+    m_stderr = QString::fromLocal8Bit(toolProc.readAllStandardError());
+}
+
+bool QbsTool::tryToRunTool(const QString &toolName, const QStringList &arguments, int *exitCode)
+{
+    QbsTool tool;
+    tool.runTool(toolName, arguments);
+    if (exitCode)
+        *exitCode = tool.exitCode();
+    if (tool.failedToStart())
+        return false;
+    std::cout << qPrintable(tool.stdOut());
+    std::cerr << qPrintable(tool.stdErr());
+    return true;
+}
+
+QStringList QbsTool::allToolNames()
+{
+    QStringList toolFileNames = QDir(qbsBinDir()).entryList(QStringList(toolPrefix()
+            + QLatin1Char('*')), QDir::Files, QDir::Name);
+    QStringList toolNames;
+    const int prefixLength = toolPrefix().count();
+    foreach (const QString &toolFileName, toolFileNames)
+        toolNames << toolFileName.mid(prefixLength);
+    return toolNames;
+}