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117 lines
3.5 KiB
117 lines
3.5 KiB
15 years ago
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//
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// MAIN -- a little demo of the capabilities of the "KProcess" class
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//
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// version 0.2, Aug 2nd 1997
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// $Id$
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//
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// (C) Christian Czezatke
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// e9025461@student.tuwien.ac.at
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//
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#include "kprocess.h"
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#include <stdio.h>
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#include <string.h>
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#include <kapplication.h>
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#include <signal.h>
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#include "kprocesstest.h"
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#define PROCNO 10
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//
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// A nice input for "sort"... ;- )
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//
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static const char txt[] = "hat\nder\nalte\nhexenmeister\nsich\ndoch\neinmal\nwegbegeben\n\
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und\nnun\nsollen\nseine\ngeister\nsich\nnach\nmeinem\nwillen\nregen\nseine\nwort\nund\n\
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werke\nmerkt\nich\nund\nden\nbrauch\nund\nmit\ngeistesstaerke\ntu\nich\nwunder\nauch\n";
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int main(int argc, char *argv[])
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{
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KProcess p1, p2, p3, p4;
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Dummy dummy;
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KApplication app(argc, argv, "kprocesstest");
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printf("Welcome to the KProcess Demo Application!\n");
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//
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// The kghostview demo -- Starts a kghostview instance blocking. -- After
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// kghostview has exited, kghostview is restarted non-blocking. When the process exits,
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// the signal "processExited" will be emitted.
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//
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p1 << "kghostview";
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QObject::connect(&p1, SIGNAL(processExited(KProcess *)), &dummy, SLOT(printMessage(KProcess *)));
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printf("starting kghostview blocking (close to continue)\n");
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p1.start(KProcess::Block);
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printf("restarting kghostview non blocking\n");
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p1.start();
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//
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// A konsole with tcsh to demonstrate how to pass command line options to a process
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// with "KProcess" (is run blocking)
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//
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printf("Starting konsole with /bin/tcsh as shell (close to continue)\n");
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p2 << "konsole" << "-e" << "/bin/tcsh";
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p2.setWorkingDirectory("/tmp");
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QObject::connect(&p2, SIGNAL(processExited(KProcess *)), &dummy, SLOT(printMessage(KProcess *)));
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p2.start(KProcess::Block);
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//
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// Getting the output from a process. "ls" with parameter "-l" is called and it output is captured
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//
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p3 << "ls" << "-l";
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QObject::connect(&p3, SIGNAL(processExited(KProcess *)),
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&dummy, SLOT(printMessage(KProcess *)));
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QObject::connect(&p3, SIGNAL(receivedStdout(KProcess *, char *, int)),
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&dummy, SLOT(gotOutput(KProcess *, char *, int)));
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QObject::connect(&p3, SIGNAL(receivedStderr(KProcess *, char *, int)),
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&dummy, SLOT(gotOutput(KProcess *, char *, int)));
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p3.start(KProcess::NotifyOnExit, KProcess::AllOutput);
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//
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// An even more advanced example of communicating with a child proces. -- A "sort" command
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// is started. After it has been started a list of words (as stored in "txt") is written
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// to its stdin. When the sort command has absorbed all its input it will emit the signal
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// "inputSent". -- This signal is connected to "outputDone" in the Dummy object.
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//
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// "OutputDone" will do a "sendEof" to p4. -- This will cause "sort" to perform its task.
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// The output of sort is then captured once more by connecting to the signal "outputWaiting"
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//
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//
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p4 << "sort";
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QObject::connect(&p4, SIGNAL(processExited(KProcess *)),
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&dummy, SLOT(printMessage(KProcess *)));
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QObject::connect(&p4, SIGNAL(receivedStdout(KProcess *, char *, int)),
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&dummy, SLOT(gotOutput(KProcess *, char *, int)));
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QObject::connect(&p4, SIGNAL(receivedStderr(KProcess *, char *, int)),
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&dummy, SLOT(gotOutput(KProcess *, char *, int)));
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QObject::connect(&p4, SIGNAL(wroteStdin(KProcess *)),
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&dummy, SLOT(outputDone(KProcess *)));
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p4.start(KProcess::NotifyOnExit, KProcess::All);
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printf("after p4.start");
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p4.writeStdin(txt, strlen(txt));
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printf("Entering man Qt event loop -- press <CTRL><C> to abort\n");
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app.exec();
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return 0;
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}
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#include "kprocesstest.moc"
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