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[wxWidgets.git] / src / motif / utilsexc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        utilsexec.cpp
// Purpose:     Execution-related utilities
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
// #pragma implementation
#endif

#include "wx/utils.h"
#include "wx/app.h"
#include "wx/process.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#ifdef VMS
/*steve*/
#ifdef __HIDE_FORBIDDEN_NAMES
#undefine __HIDE_FORBIDDEN_NAMES
#endif
#include <socket.h>
#ifdef VAX
/*because 'noshare' is not valid in vax C++*/
#define CC$VAXCSHR 1
#endif
#include <unixlib.h>
#define unlink DELETE

#else

#if defined(__AIX__) || defined(__xlC__)
#include <sys/socket.h>
#include <sys/select.h>
#else
#ifndef __DATA_GENERAL__
#include <sys/syscall.h>
#endif
#endif

#include <sys/wait.h>
#include <unistd.h>
#include <dirent.h>
#include <pwd.h>

#endif

#ifdef __SVR4__
#include <sys/systeminfo.h>
#endif

#ifdef __SOLARIS__
// somehow missing from sys/wait.h but in the system's docs
extern "C"
{
    pid_t wait4(pid_t pid, int *statusp, int options, struct rusage
        *rusage);
}
#endif

#include <sys/time.h>
#include <errno.h>

#include <Xm/Xm.h>

struct wxLocalProcessData
{
    int pid, end_process;
    wxProcess *process;
};

#ifdef __SOLARIS__
// somehow missing from sys/wait.h but in the system's docs
extern "C"
{
    pid_t wait4(pid_t pid, int *statusp, int options, struct rusage
        *rusage);
}
#endif

void xt_notify_end_process(XtPointer client, int *fid,
                           XtInputId *id)
{
    wxLocalProcessData *process_data = (wxLocalProcessData *)client;
    
    int pid;
    
    pid = (process_data->pid > 0) ? process_data->pid : -(process_data->pid);
    
    /* wait4 is not part of any standard, use at own risk
    * not sure what wait4 does, but wait3 seems to be closest, whats a digit ;-)
    * --- offer@sgi.com */
#if !defined(__sgi) && !defined(__SGI__) && !defined(__ALPHA__) && !defined(__SUNCC__)
    wait4(process_data->pid, NULL, 0, NULL);
#else
    wait3((int *) NULL, 0, (rusage *) NULL);
#endif
    
    XtRemoveInput(*id);
    if (process_data->process)
      process_data->process->OnTerminate(process_data->pid, 0); // What should 'status' be?
    
    process_data->end_process = TRUE;
 /*
    if (process_data->pid > 0) // synchronous
        delete process_data;
    else
        process_data->pid = 0;
  */
    delete process_data;
}

long wxExecute(char **argv, bool sync, wxProcess *handler)
{
#ifdef VMS
    return(0);
#else
    if (*argv == NULL)
        return 0;	// Nothing???
    
    int proc_link[2];
    if (pipe(proc_link))
        return 0;
    
    /* fork the process */
#if defined(sun) || defined(__ultrix) || defined(__bsdi__)
    pid_t pid = vfork ();
#else
    pid_t pid = fork ();
#endif
    
    if (pid == -1)
    {
        return 0;
    }
    else if (pid == 0)
    {
        /* GUILHEM: Close all fds when sync == 0 */
        if (sync == 0)
            for (int fd=0;fd<FD_SETSIZE;fd++) {
                if (proc_link[1] != fd)
                    close(fd);
            }
            /* child */
#ifdef _AIX
            execvp ((const char *)*argv, (const char **)argv);
#else
            execvp (*argv, argv);
#endif
            /* GUILHEM: Reopen output stream */
            //      open("/dev/console", O_WRONLY);
            /* GUILHEM: End */
            if (errno == ENOENT)
                printf ("%s: command not found\n", *argv);
            else
                perror (*argv);
            printf ("wxWindows: could not execute '%s'\n", *argv);
            _exit (-1);
    }

    wxLocalProcessData *process_data = new wxLocalProcessData;
    
    process_data->end_process = 0;
    process_data->process = handler;
    process_data->pid = (sync) ? pid : -pid;
    
    close(proc_link[1]);
    XtAppAddInput((XtAppContext) wxTheApp->GetAppContext(), proc_link[0],
        (XtPointer *) XtInputReadMask,
        (XtInputCallbackProc) xt_notify_end_process,
        (XtPointer) process_data);
    
    if (sync)
    {
        while (!process_data->end_process)
            XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
        
        if (WIFEXITED(process_data->end_process) != 0)
        {
            return WEXITSTATUS(process_data->end_process);
        }
    }
    
    return pid;
#endif
    // end VMS
}

long wxExecute (const wxString& command, bool sync, wxProcess* handler)
{
#ifdef VMS
    return(0);
#else
    if (command.IsNull() || command == "")
        return 0; // Nothing to do
    
    // Run a program the recomended way under X (XView) 
    int argc = 0;
    char *argv[127];
    char tmp[1024];
    const char *IFS = " \t\n";
    
    // Build argument vector 
    strncpy (tmp, (const char*) command, sizeof (tmp) / sizeof (char) - 1);
    tmp[sizeof (tmp) / sizeof (char) - 1] = '\0';
    argv[argc++] = strtok (tmp, IFS);
    while ((argv[argc++] = strtok (NULL, IFS)) != NULL)
        /* loop */ ;
        
        return wxExecute(argv, sync, handler);
#endif
    // VMS
}