JUCE/modules/juce_core/threads/juce_ChildProcess.cpp

/*
  ==============================================================================

   This file is part of the JUCE library - "Jules' Utility Class Extensions"
   Copyright 2004-11 by Raw Material Software Ltd.

  ------------------------------------------------------------------------------

   JUCE can be redistributed and/or modified under the terms of the GNU General
   Public License (Version 2), as published by the Free Software Foundation.
   A copy of the license is included in the JUCE distribution, or can be found
   online at www.gnu.org/licenses.

   JUCE 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.

  ------------------------------------------------------------------------------

   To release a closed-source product which uses JUCE, commercial licenses are
   available: visit www.rawmaterialsoftware.com/juce for more information.

  ==============================================================================
*/

BEGIN_JUCE_NAMESPACE

ChildProcess::ChildProcess() {}
ChildProcess::~ChildProcess() {}

bool ChildProcess::waitForProcessToFinish (const int timeoutMs) const
{
    const int64 timeoutTime = Time::getMillisecondCounter() + timeoutMs;

    do
    {
        if (! isRunning())
            return true;
    }
    while (timeoutMs < 0 || Time::getMillisecondCounter() < timeoutTime);

    return false;
}

String ChildProcess::readAllProcessOutput()
{
    MemoryOutputStream result;

    for (;;)
    {
        char buffer [512];
        const int num = readProcessOutput (buffer, sizeof (buffer));

        if (num <= 0)
            break;

        result.write (buffer, num);
    }

    return result.toString();
}

//==============================================================================
#if JUCE_UNIT_TESTS

class ChildProcessTests  : public UnitTest
{
public:
    ChildProcessTests() : UnitTest ("ChildProcess") {}

    void runTest()
    {
        beginTest ("Child Processes");

      #if JUCE_WINDOWS || JUCE_MAC || JUCE_LINUX
        ChildProcess p;

       #if JUCE_WINDOWS
        expect (p.start ("tasklist"));
       #else
        expect (p.start ("ls /"));
       #endif

        String output (p.readAllProcessOutput());
        expect (output.isNotEmpty());
      #endif
    }
};

static ChildProcessTests childProcessUnitTests;

#endif


END_JUCE_NAMESPACE