Call wxApp::ProcessPendingEvents() from wxX11 event loop.

[wxWidgets.git] / src / unix / utilsunx.cpp

diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp
index 94ecc08e2da59b3782419b3ac50d899277c0d64b..18bea9bdef0163ffc782f8f1e38654411585f162 100644 (file)
--- a/src/unix/utilsunx.cpp
+++ b/src/unix/utilsunx.cpp
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        utilsunx.cpp
-// Purpose:     generic Unix implementation of many wx functions
+// Name:        src/unix/utilsunx.cpp
+// Purpose:     generic Unix implementation of many wx functions (for wxBase)

 // Author:      Vadim Zeitlin
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
 // Author:      Vadim Zeitlin
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin


@@ -15,36 +15,110 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#include "wx/defs.h"
-#include "wx/string.h"
-
-#include "wx/intl.h"
-#include "wx/log.h"
-#include "wx/app.h"
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

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

+
+#define USE_PUTENV (!defined(HAVE_SETENV) && defined(HAVE_PUTENV))
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/wxcrtvararg.h"
+    #if USE_PUTENV
+        #include "wx/module.h"
+        #include "wx/hashmap.h"
+    #endif
+#endif
+
+#include "wx/apptrait.h"
+

 #include "wx/process.h"
 #include "wx/thread.h"
 
 #include "wx/process.h"
 #include "wx/thread.h"
 

-#include "wx/stream.h"
+#include "wx/cmdline.h"
+
+#include "wx/wfstream.h"
+
+#include "wx/private/selectdispatcher.h"
+#include "wx/private/fdiodispatcher.h"
+#include "wx/unix/execute.h"
+#include "wx/unix/private.h"
+
+#ifdef wxHAS_GENERIC_PROCESS_CALLBACK
+#include "wx/private/fdiodispatcher.h"
+#endif
+
+#include <pwd.h>
+#include <sys/wait.h>       // waitpid()
+
+#ifdef HAVE_SYS_SELECT_H
+#   include <sys/select.h>
+#endif
+
+#define HAS_PIPE_INPUT_STREAM (wxUSE_STREAMS && wxUSE_FILE)
+
+#if HAS_PIPE_INPUT_STREAM
+
+// define this to let wxexec.cpp know that we know what we're doing
+#define _WX_USED_BY_WXEXECUTE_
+#include "../common/execcmn.cpp"
+
+#endif // HAS_PIPE_INPUT_STREAM
+
+#if defined(__MWERKS__) && defined(__MACH__)
+    #ifndef WXWIN_OS_DESCRIPTION
+        #define WXWIN_OS_DESCRIPTION "MacOS X"
+    #endif
+    #ifndef HAVE_NANOSLEEP
+        #define HAVE_NANOSLEEP
+    #endif
+    #ifndef HAVE_UNAME
+        #define HAVE_UNAME
+    #endif
+
+    // our configure test believes we can use sigaction() if the function is
+    // available but Metrowekrs with MSL run-time does have the function but
+    // doesn't have sigaction struct so finally we can't use it...
+    #ifdef __MSL__
+        #undef wxUSE_ON_FATAL_EXCEPTION
+        #define wxUSE_ON_FATAL_EXCEPTION 0
+    #endif
+#endif

 
 

+// not only the statfs syscall is called differently depending on platform, but
+// one of its incarnations, statvfs(), takes different arguments under
+// different platforms and even different versions of the same system (Solaris
+// 7 and 8): if you want to test for this, don't forget that the problems only
+// appear if the large files support is enabled

 #ifdef HAVE_STATFS
 #ifdef HAVE_STATFS

-#  ifdef __BSD__
-#    include <sys/param.h>
-#    include <sys/mount.h>
-#  else
-#    include <sys/vfs.h>
-#  endif
+    #ifdef __BSD__
+        #include <sys/param.h>
+        #include <sys/mount.h>
+    #else // !__BSD__
+        #include <sys/vfs.h>
+    #endif // __BSD__/!__BSD__
+
+    #define wxStatfs statfs
+
+    #ifndef HAVE_STATFS_DECL
+        // some systems lack statfs() prototype in the system headers (AIX 4)
+        extern "C" int statfs(const char *path, struct statfs *buf);
+    #endif

 #endif // HAVE_STATFS
 
 #ifdef HAVE_STATVFS
     #include <sys/statvfs.h>
 
 #endif // HAVE_STATFS
 
 #ifdef HAVE_STATVFS
     #include <sys/statvfs.h>
 

-    #define statfs statvfs
+    #define wxStatfs statvfs

 #endif // HAVE_STATVFS
 
 #endif // HAVE_STATVFS
 

-#if wxUSE_GUI
-    #include "wx/unix/execute.h"
+#if defined(HAVE_STATFS) || defined(HAVE_STATVFS)
+    // WX_STATFS_T is detected by configure
+    #define wxStatfs_t WX_STATFS_T

 #endif
 
 // SGI signal.h defines signal handler arguments differently depending on
 #endif
 
 // SGI signal.h defines signal handler arguments differently depending on


@@ -58,9 +132,8 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>

-#include <unistd.h>

 #include <sys/wait.h>
 #include <sys/wait.h>

-#include <pwd.h>
+#include <unistd.h>

 #include <errno.h>
 #include <netdb.h>
 #include <signal.h>
 #include <errno.h>
 #include <netdb.h>
 #include <signal.h>


@@ -73,6 +146,12 @@
     #include <sys/utsname.h> // for uname()
 #endif // HAVE_UNAME
 
     #include <sys/utsname.h> // for uname()
 #endif // HAVE_UNAME
 

+// Used by wxGetFreeMemory().
+#ifdef __SGI__
+    #include <sys/sysmp.h>
+    #include <sys/sysinfo.h>   // for SAGET and MINFO structures
+#endif
+

 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------


@@ -81,26 +160,22 @@
 // headers - please add your system here if it is the case for your OS.
 // SunOS < 5.6 (i.e. Solaris < 2.6) and DG-UX are like this.
 #if !defined(HAVE_USLEEP) && \
 // headers - please add your system here if it is the case for your OS.
 // SunOS < 5.6 (i.e. Solaris < 2.6) and DG-UX are like this.
 #if !defined(HAVE_USLEEP) && \

-    (defined(__SUN__) && !defined(__SunOs_5_6) && \
+    ((defined(__SUN__) && !defined(__SunOs_5_6) && \

                          !defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \
                          !defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \

-     defined(__osf__) || defined(__EMX__)
+     defined(__osf__) || defined(__EMX__))

     extern "C"
     {
     extern "C"
     {

-        #ifdef __SUN__
+        #ifdef __EMX__
+            /* I copied this from the XFree86 diffs. AV. */
+            #define INCL_DOSPROCESS
+            #include <os2.h>
+            inline void usleep(unsigned long delay)
+            {
+                DosSleep(delay ? (delay/1000l) : 1l);
+            }
+        #else // Unix

             int usleep(unsigned int usec);
             int usleep(unsigned int usec);

-        #else // !Sun
-            #ifdef __EMX__
-                /* I copied this from the XFree86 diffs. AV. */
-                #define INCL_DOSPROCESS
-                #include <os2.h>
-                inline void usleep(unsigned long delay)
-                {
-                    DosSleep(delay ? (delay/1000l) : 1l);
-                }
-            #else // !Sun && !EMX
-                void usleep(unsigned long usec);
-            #endif
-        #endif // Sun/EMX/Something else
+        #endif // __EMX__/Unix

     };
 
     #define HAVE_USLEEP 1
     };
 
     #define HAVE_USLEEP 1


@@ -119,15 +194,15 @@ void wxSleep(int nSecs)
     sleep(nSecs);
 }
 
     sleep(nSecs);
 }
 

-void wxUsleep(unsigned long milliseconds)
+void wxMicroSleep(unsigned long microseconds)

 {
 #if defined(HAVE_NANOSLEEP)
     timespec tmReq;
 {
 #if defined(HAVE_NANOSLEEP)
     timespec tmReq;

-    tmReq.tv_sec = (time_t)(milliseconds / 1000);
-    tmReq.tv_nsec = (milliseconds % 1000) * 1000 * 1000;
+    tmReq.tv_sec = (time_t)(microseconds / 1000000);
+    tmReq.tv_nsec = (microseconds % 1000000) * 1000;

 
     // we're not interested in remaining time nor in return value
 
     // we're not interested in remaining time nor in return value

-    (void)nanosleep(&tmReq, (timespec *)NULL);
+    (void)nanosleep(&tmReq, NULL);

 #elif defined(HAVE_USLEEP)
     // uncomment this if you feel brave or if you are sure that your version
     // of Solaris has a safe usleep() function but please notice that usleep()
 #elif defined(HAVE_USLEEP)
     // uncomment this if you feel brave or if you are sure that your version
     // of Solaris has a safe usleep() function but please notice that usleep()


@@ -137,25 +212,30 @@ void wxUsleep(unsigned long milliseconds)
         #error "usleep() cannot be used in MT programs under Solaris."
     #endif // Sun
 
         #error "usleep() cannot be used in MT programs under Solaris."
     #endif // Sun
 

-    usleep(milliseconds * 1000); // usleep(3) wants microseconds
+    usleep(microseconds);

 #elif defined(HAVE_SLEEP)
     // under BeOS sleep() takes seconds (what about other platforms, if any?)
 #elif defined(HAVE_SLEEP)
     // under BeOS sleep() takes seconds (what about other platforms, if any?)

-    sleep(milliseconds * 1000);
+    sleep(microseconds * 1000000);

 #else // !sleep function
 #else // !sleep function

-    #error "usleep() or nanosleep() function required for wxUsleep"
+    #error "usleep() or nanosleep() function required for wxMicroSleep"

 #endif // sleep function
 }
 
 #endif // sleep function
 }
 

+void wxMilliSleep(unsigned long milliseconds)
+{
+    wxMicroSleep(milliseconds*1000);
+}
+

 // ----------------------------------------------------------------------------
 // process management
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // process management
 // ----------------------------------------------------------------------------
 

-int wxKill(long pid, wxSignal sig, wxKillError *rc)
+int wxKill(long pid, wxSignal sig, wxKillError *rc, int flags)

 {
 {

-    int err = kill((pid_t)pid, (int)sig);
+    int err = kill((pid_t) (flags & wxKILL_CHILDREN) ? -pid : pid, (int)sig);

     if ( rc )
     {
     if ( rc )
     {

-        switch ( errno )
+        switch ( err ? errno : 0 )

         {
             case 0:
                 *rc = wxKILL_OK;
         {
             case 0:
                 *rc = wxKILL_OK;


@@ -175,7 +255,7 @@ int wxKill(long pid, wxSignal sig, wxKillError *rc)
 
             default:
                 // this goes against Unix98 docs so log it
 
             default:
                 // this goes against Unix98 docs so log it

-                wxLogDebug(_T("unexpected kill(2) return value %d"), err);
+                wxLogDebug(wxT("unexpected kill(2) return value %d"), err);

 
                 // something else...
                 *rc = wxKILL_ERROR;
 
                 // something else...
                 *rc = wxKILL_ERROR;


@@ -185,78 +265,80 @@ int wxKill(long pid, wxSignal sig, wxKillError *rc)
     return err;
 }
 
     return err;
 }
 

-#define WXEXECUTE_NARGS   127
-
-long wxExecute( const wxString& command, int flags, wxProcess *process )
+// Shutdown or reboot the PC
+bool wxShutdown(int flags)

 {
 {

-    wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") );
+    flags &= ~wxSHUTDOWN_FORCE;

 
 

-    int argc = 0;
-    wxChar *argv[WXEXECUTE_NARGS];
-    wxString argument;
-    const wxChar *cptr = command.c_str();
-    wxChar quotechar = wxT('\0'); // is arg quoted?
-    bool escaped = FALSE;
-
-    // split the command line in arguments
-    do
+    wxChar level;
+    switch ( flags )

     {
     {

-        argument=wxT("");
-        quotechar = wxT('\0');
+        case wxSHUTDOWN_POWEROFF:
+            level = wxT('0');
+            break;

 
 

-        // eat leading whitespace:
-        while ( wxIsspace(*cptr) )
-            cptr++;
+        case wxSHUTDOWN_REBOOT:
+            level = wxT('6');
+            break;

 
 

-        if ( *cptr == wxT('\'') || *cptr == wxT('"') )
-            quotechar = *cptr++;
+        case wxSHUTDOWN_LOGOFF:
+            // TODO: use dcop to log off?
+            return false;

 
 

-        do
-        {
-            if ( *cptr == wxT('\\') && ! escaped )
-            {
-                escaped = TRUE;
-                cptr++;
-                continue;
-            }
+        default:
+            wxFAIL_MSG( wxT("unknown wxShutdown() flag") );
+            return false;
+    }

 
 

-            // all other characters:
-            argument += *cptr++;
-            escaped = FALSE;
+    return system(wxString::Format("init %c", level).mb_str()) == 0;
+}

 
 

-            // have we reached the end of the argument?
-            if ( (*cptr == quotechar && ! escaped)
-                 || (quotechar == wxT('\0') && wxIsspace(*cptr))
-                 || *cptr == wxT('\0') )
-            {
-                wxASSERT_MSG( argc < WXEXECUTE_NARGS,
-                              wxT("too many arguments in wxExecute") );
+// ----------------------------------------------------------------------------
+// wxStream classes to support IO redirection in wxExecute
+// ----------------------------------------------------------------------------

 
 

-                argv[argc] = new wxChar[argument.length() + 1];
-                wxStrcpy(argv[argc], argument.c_str());
-                argc++;
+#if HAS_PIPE_INPUT_STREAM

 
 

-                // if not at end of buffer, swallow last character:
-                if(*cptr)
-                    cptr++;
+bool wxPipeInputStream::CanRead() const
+{
+    if ( m_lasterror == wxSTREAM_EOF )
+        return false;

 
 

-                break; // done with this one, start over
-            }
-        } while(*cptr);
-    } while(*cptr);
-    argv[argc] = NULL;
+    // check if there is any input available
+    struct timeval tv;
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+
+    const int fd = m_file->fd();
+
+    fd_set readfds;

 
 

-    // do execute the command
-    long lRc = wxExecute(argv, flags, process);
+    wxFD_ZERO(&readfds);
+    wxFD_SET(fd, &readfds);

 
 

-    // clean up
-    argc = 0;
-    while( argv[argc] )
-        delete [] argv[argc++];
+    switch ( select(fd + 1, &readfds, NULL, NULL, &tv) )
+    {
+        case -1:
+            wxLogSysError(_("Impossible to get child process input"));
+            // fall through
+
+        case 0:
+            return false;

 
 

-    return lRc;
+        default:
+            wxFAIL_MSG(wxT("unexpected select() return value"));
+            // still fall through
+
+        case 1:
+            // input available -- or maybe not, as select() returns 1 when a
+            // read() will complete without delay, but it could still not read
+            // anything
+            return !Eof();
+    }

 }
 
 }
 

+#endif // HAS_PIPE_INPUT_STREAM
+

 // ----------------------------------------------------------------------------
 // wxShell
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxShell
 // ----------------------------------------------------------------------------


@@ -267,12 +349,12 @@ static wxString wxMakeShellCommand(const wxString& command)
     if ( !command )
     {
         // just an interactive shell
     if ( !command )
     {
         // just an interactive shell

-        cmd = _T("xterm");
+        cmd = wxT("xterm");

     }
     else
     {
         // execute command in a shell
     }
     else
     {
         // execute command in a shell

-        cmd << _T("/bin/sh -c '") << command << _T('\'');
+        cmd << wxT("/bin/sh -c '") << command << wxT('\'');

     }
 
     return cmd;
     }
 
     return cmd;


@@ -285,242 +367,102 @@ bool wxShell(const wxString& command)
 
 bool wxShell(const wxString& command, wxArrayString& output)
 {
 
 bool wxShell(const wxString& command, wxArrayString& output)
 {

-    wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") );
+    wxCHECK_MSG( !command.empty(), false, wxT("can't exec shell non interactively") );

 
     return wxExecute(wxMakeShellCommand(command), output);
 }
 
 
     return wxExecute(wxMakeShellCommand(command), output);
 }
 

-#if wxUSE_GUI
-
-void wxHandleProcessTermination(wxEndProcessData *proc_data)
-{
-    // notify user about termination if required
-    if ( proc_data->process )
-    {
-        proc_data->process->OnTerminate(proc_data->pid, proc_data->exitcode);
-    }
-
-    // clean up
-    if ( proc_data->pid > 0 )
-    {
-       delete proc_data;
-    }
-    else
-    {
-       // let wxExecute() know that the process has terminated
-       proc_data->pid = 0;
-    }
-}
-
-#endif // wxUSE_GUI
-
-// ----------------------------------------------------------------------------
-// wxStream classes to support IO redirection in wxExecute
-// ----------------------------------------------------------------------------
-
-#if wxUSE_STREAMS
-
-class wxProcessFileInputStream : public wxInputStream
+namespace

 {
 {

-public:
-    wxProcessFileInputStream(int fd) { m_fd = fd; }
-    ~wxProcessFileInputStream() { close(m_fd); }
-
-    virtual bool Eof() const;
-
-protected:
-    size_t OnSysRead(void *buffer, size_t bufsize);
-
-protected:
-    int m_fd;
-};

 
 

-class wxProcessFileOutputStream : public wxOutputStream
+// helper class for storing arguments as char** array suitable for passing to
+// execvp(), whatever form they were passed to us
+class ArgsArray

 {
 public:
 {
 public:

-    wxProcessFileOutputStream(int fd) { m_fd = fd; }
-    ~wxProcessFileOutputStream() { close(m_fd); }
-
-protected:
-    size_t OnSysWrite(const void *buffer, size_t bufsize);
-
-protected:
-    int m_fd;
-};
-
-bool wxProcessFileInputStream::Eof() const
-{
-    if ( m_lasterror == wxSTREAM_EOF )
-        return TRUE;
+    ArgsArray(const wxArrayString& args)
+    {
+        Init(args.size());

 
 

-    // check if there is any input available
-    struct timeval tv;
-    tv.tv_sec = 0;
-    tv.tv_usec = 0;
+        for ( int i = 0; i < m_argc; i++ )
+        {
+            m_argv[i] = wxStrdup(args[i]);
+        }
+    }

 
 

-    fd_set readfds;
-    FD_ZERO(&readfds);
-    FD_SET(m_fd, &readfds);
-    switch ( select(m_fd + 1, &readfds, NULL, NULL, &tv) )
+#if wxUSE_UNICODE
+    ArgsArray(wchar_t **wargv)

     {
     {

-        case -1:
-            wxLogSysError(_("Impossible to get child process input"));
-            // fall through
-
-        case 0:
-            return TRUE;
+        int argc = 0;
+        while ( *wargv++ )
+            argc++;

 
 

-        default:
-            wxFAIL_MSG(_T("unexpected select() return value"));
-            // still fall through
+        Init(argc);

 
 

-        case 1:
-            // input available: check if there is any
-            return wxInputStream::Eof();
+        for ( int i = 0; i < m_argc; i++ )
+        {
+            m_argv[i] = wxSafeConvertWX2MB(wargv[i]).release();
+        }

     }
     }

-}
+#endif // wxUSE_UNICODE

 
 

-size_t wxProcessFileInputStream::OnSysRead(void *buffer, size_t bufsize)
-{
-    int ret = read(m_fd, buffer, bufsize);
-    if ( ret == 0 )
-    {
-        m_lasterror = wxSTREAM_EOF;
-    }
-    else if ( ret == -1 )
-    {
-        m_lasterror = wxSTREAM_READ_ERROR;
-        ret = 0;
-    }
-    else
+    ~ArgsArray()

     {
     {

-        m_lasterror = wxSTREAM_NOERROR;
+        for ( int i = 0; i < m_argc; i++ )
+        {
+            free(m_argv[i]);
+        }
+
+        delete [] m_argv;

     }
 
     }
 

-    return ret;
-}
+    operator char**() const { return m_argv; }

 
 

-size_t wxProcessFileOutputStream::OnSysWrite(const void *buffer, size_t bufsize)
-{
-    int ret = write(m_fd, buffer, bufsize);
-    if ( ret == -1 )
-    {
-        m_lasterror = wxSTREAM_WRITE_ERROR;
-        ret = 0;
-    }
-    else
+private:
+    void Init(int argc)

     {
     {

-        m_lasterror = wxSTREAM_NOERROR;
+        m_argc = argc;
+        m_argv = new char *[m_argc + 1];
+        m_argv[m_argc] = NULL;

     }
 
     }
 

-    return ret;
-}
-
-// ----------------------------------------------------------------------------
-// wxStreamTempBuffer
-// ----------------------------------------------------------------------------
-
-/*
-   Extract of a mail to wx-users to give the context of the problem we are
-   trying to solve here:
-
-    MC> If I run the command:
-    MC>    find . -name "*.h" -exec grep linux {} \;
-    MC> in the exec sample synchronously from the 'Capture command output'
-    MC> menu, wxExecute never returns.  I have to xkill it.  Has anyone
-    MC> else encountered this?
-
-     Yes, I can reproduce it too.
-
-     I even think I understand why it happens: before launching the external
-    command we set up a pipe with a valid file descriptor on the reading side
-    when the output is redirected. So the subprocess happily writes to it ...
-    until the pipe buffer (which is usually quite big on Unix, I think the
-    default is 4Mb) is full. Then the writing process stops and waits until we
-    read some data from the pipe to be able to continue writing to it but we
-    never do it because we wait until it terminates to start reading and so we
-    have a classical deadlock.
-
-   Here is the fix: we now read the output as soon as it appears into a temp
-   buffer (wxStreamTempBuffer object) and later just stuff it back into the
-   stream when the process terminates. See supporting code in wxExecute()
-   itself as well.   
-*/
-
-class wxStreamTempBuffer
-{
-public:
-    wxStreamTempBuffer();
-
-    // call to associate a stream with this buffer, otherwise nothing happens
-    // at all
-    void Init(wxInputStream *stream);
-
-    // check for input on our stream and cache it in our buffer if any
-    void Update();
+    int m_argc;
+    char **m_argv;

 
 

-    ~wxStreamTempBuffer();
+    wxDECLARE_NO_COPY_CLASS(ArgsArray);
+};

 
 

-private:
-    // the stream we're buffering, if NULL we don't do anything at all
-    wxInputStream *m_stream;
+} // anonymous namespace

 
 

-    // the buffer of size m_size (NULL if m_size == 0)
-    void *m_buffer;
+// ----------------------------------------------------------------------------
+// wxExecute implementations
+// ----------------------------------------------------------------------------

 
 

-    // the size of the buffer
-    size_t m_size;
-};
+#if defined(__DARWIN__)
+bool wxMacLaunch(char **argv);
+#endif

 
 

-wxStreamTempBuffer::wxStreamTempBuffer()
+long wxExecute(const wxString& command, int flags, wxProcess *process)

 {
 {

-    m_stream = NULL; 
-    m_buffer = NULL;
-    m_size = 0;
-}
+    ArgsArray argv(wxCmdLineParser::ConvertStringToArgs(command,
+                                                        wxCMD_LINE_SPLIT_UNIX));

 
 

-void wxStreamTempBuffer::Init(wxInputStream *stream)
-{
-    m_stream = stream;
+    return wxExecute(argv, flags, process);

 }
 
 }
 

-void wxStreamTempBuffer::Update()
-{
-    if ( m_stream && !m_stream->Eof() )
-    {
-        // realloc in blocks of 1Kb - surely not the best strategy but which
-        // one is?
-        static const size_t incSize = 1024;
-
-        void *buf = realloc(m_buffer, m_size + incSize);
-        if ( !buf )
-        {
-            // don't read any more, we don't have enough memory to do it
-            m_stream = NULL;
-        }
-        else // got memory for the buffer
-        {
-            m_buffer = buf;
-            m_stream->Read((char *)m_buffer + m_size, incSize);
-            m_size += incSize;
-        }
-    }
-}
+#if wxUSE_UNICODE

 
 

-wxStreamTempBuffer::~wxStreamTempBuffer()
+long wxExecute(wchar_t **wargv, int flags, wxProcess *process)

 {
 {

-    if ( m_buffer )
-    {
-        m_stream->Ungetch(m_buffer, m_size);
-        free(m_buffer);
-    }
+    ArgsArray argv(wargv);
+
+    return wxExecute(argv, flags, process);

 }
 
 }
 

-#endif // wxUSE_STREAMS
+#endif // wxUSE_UNICODE

 
 

-long wxExecute(wxChar **argv,
-               int flags,
-               wxProcess *process)
+// wxExecute: the real worker function
+long wxExecute(char **argv, int flags, wxProcess *process)

 {
     // for the sync execution, we return -1 to indicate failure, but for async
     // case we return 0 which is never a valid PID
 {
     // for the sync execution, we return -1 to indicate failure, but for async
     // case we return 0 which is never a valid PID


@@ -531,150 +473,116 @@ long wxExecute(wxChar **argv,
 
     wxCHECK_MSG( *argv, ERROR_RETURN_CODE, wxT("can't exec empty command") );
 
 
     wxCHECK_MSG( *argv, ERROR_RETURN_CODE, wxT("can't exec empty command") );
 

-#if wxUSE_UNICODE
-    int mb_argc = 0;
-    char *mb_argv[WXEXECUTE_NARGS];
-
-    while (argv[mb_argc])
+#if wxUSE_THREADS
+    // fork() doesn't mix well with POSIX threads: on many systems the program
+    // deadlocks or crashes for some reason. Probably our code is buggy and
+    // doesn't do something which must be done to allow this to work, but I
+    // don't know what yet, so for now just warn the user (this is the least we
+    // can do) about it
+    wxASSERT_MSG( wxThread::IsMain(),
+                    wxT("wxExecute() can be called only from the main thread") );
+#endif // wxUSE_THREADS
+
+#if defined(__WXCOCOA__) || ( defined(__WXOSX_MAC__) && wxOSX_USE_COCOA_OR_CARBON )
+    // wxMacLaunch() only executes app bundles and only does it asynchronously.
+    // It returns false if the target is not an app bundle, thus falling
+    // through to the regular code for non app bundles.
+    if ( !(flags & wxEXEC_SYNC) && wxMacLaunch(argv) )

     {
     {

-        wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
-        mb_argv[mb_argc] = strdup(mb_arg);
-        mb_argc++;
+        // we don't have any PID to return so just make up something non null
+        return -1;

     }
     }

-    mb_argv[mb_argc] = (char *) NULL;
+#endif // __DARWIN__

 
 

-    // this macro will free memory we used above
-    #define ARGS_CLEANUP                                 \
-        for ( mb_argc = 0; mb_argv[mb_argc]; mb_argc++ ) \
-            free(mb_argv[mb_argc])
-#else // ANSI
-    // no need for cleanup
-    #define ARGS_CLEANUP

 
 

-    wxChar **mb_argv = argv;
-#endif // Unicode/ANSI
+    // this struct contains all information which we use for housekeeping
+    wxExecuteData execData;
+    execData.flags = flags;
+    execData.process = process;

 
 

-#if wxUSE_GUI

     // create pipes
     // create pipes

-    int end_proc_detect[2];
-    if ( pipe(end_proc_detect) == -1 )
+    if ( !execData.pipeEndProcDetect.Create() )

     {
     {

-        wxLogSysError( _("Pipe creation failed") );

         wxLogError( _("Failed to execute '%s'\n"), *argv );
 
         wxLogError( _("Failed to execute '%s'\n"), *argv );
 

-        ARGS_CLEANUP;
-

         return ERROR_RETURN_CODE;
     }
         return ERROR_RETURN_CODE;
     }

-#endif // wxUSE_GUI

 
     // pipes for inter process communication
 
     // pipes for inter process communication

-    int pipeIn[2],      // stdin
-        pipeOut[2],     // stdout
-        pipeErr[2];     // stderr
-
-    pipeIn[0] = pipeIn[1] =
-    pipeOut[0] = pipeOut[1] =
-    pipeErr[0] = pipeErr[1] = -1;
+    wxPipe pipeIn,      // stdin
+           pipeOut,     // stdout
+           pipeErr;     // stderr

 
     if ( process && process->IsRedirected() )
     {
 
     if ( process && process->IsRedirected() )
     {

-        if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 || pipe(pipeErr) == -1 )
+        if ( !pipeIn.Create() || !pipeOut.Create() || !pipeErr.Create() )

         {
         {

-#if wxUSE_GUI
-            // free previously allocated resources
-            close(end_proc_detect[0]);
-            close(end_proc_detect[1]);
-#endif // wxUSE_GUI
-
-            wxLogSysError( _("Pipe creation failed") );

             wxLogError( _("Failed to execute '%s'\n"), *argv );
 
             wxLogError( _("Failed to execute '%s'\n"), *argv );
 

-            ARGS_CLEANUP;
-

             return ERROR_RETURN_CODE;
         }
     }
 
     // fork the process
             return ERROR_RETURN_CODE;
         }
     }
 
     // fork the process

-#ifdef HAVE_VFORK
-    pid_t pid = vfork();
+    //
+    // NB: do *not* use vfork() here, it completely breaks this code for some
+    //     reason under Solaris (and maybe others, although not under Linux)
+    //     But on OpenVMS we do not have fork so we have to use vfork and
+    //     cross our fingers that it works.
+#ifdef __VMS
+   pid_t pid = vfork();

 #else
 #else

-    pid_t pid = fork();
+   pid_t pid = fork();

 #endif
 #endif

-
-    if ( pid == -1 )     // error?
+   if ( pid == -1 )     // error?

     {
     {

-#if wxUSE_GUI
-        close(end_proc_detect[0]);
-        close(end_proc_detect[1]);
-        close(pipeIn[0]);
-        close(pipeIn[1]);
-        close(pipeOut[0]);
-        close(pipeOut[1]);
-        close(pipeErr[0]);
-        close(pipeErr[1]);
-#endif // wxUSE_GUI
-

         wxLogSysError( _("Fork failed") );
 
         wxLogSysError( _("Fork failed") );
 

-        ARGS_CLEANUP;
-

         return ERROR_RETURN_CODE;
     }
     else if ( pid == 0 )  // we're in child
     {
         return ERROR_RETURN_CODE;
     }
     else if ( pid == 0 )  // we're in child
     {

-#if wxUSE_GUI
-        close(end_proc_detect[0]); // close reading side
-#endif // wxUSE_GUI
-
-        // These lines close the open file descriptors to to avoid any
-        // input/output which might block the process or irritate the user. If
-        // one wants proper IO for the subprocess, the right thing to do is to
-        // start an xterm executing it.
-        if ( !(flags & wxEXEC_SYNC) )
-        {
-            for ( int fd = 0; fd < FD_SETSIZE; fd++ )
-            {
-                if ( fd == pipeIn[0] || fd == pipeOut[1] || fd == pipeErr[1]
-#if wxUSE_GUI
-                     || fd == end_proc_detect[1]
-#endif // wxUSE_GUI
-                   )
-                {
-                    // don't close this one, we still need it
-                    continue;
-                }
-
-                // leave stderr opened too, it won't do any hurm
-                if ( fd != STDERR_FILENO )
-                    close(fd);
-            }
+        // NB: we used to close all the unused descriptors of the child here
+        //     but this broke some programs which relied on e.g. FD 1 being
+        //     always opened so don't do it any more, after all there doesn't
+        //     seem to be any real problem with keeping them opened

 
 

-            if ( flags & wxEXEC_MAKE_GROUP_LEADER )
-            {
-                // Set process group to child process' pid.  Then killing -pid
-                // of the parent will kill the process and all of its children.
-                setsid();
-            }
+#if !defined(__VMS) && !defined(__EMX__)
+        if ( flags & wxEXEC_MAKE_GROUP_LEADER )
+        {
+            // Set process group to child process' pid.  Then killing -pid
+            // of the parent will kill the process and all of its children.
+            setsid();

         }
         }

+#endif // !__VMS
+
+        // reading side can be safely closed but we should keep the write one
+        // opened, it will be only closed when the process terminates resulting
+        // in a read notification to the parent
+        execData.pipeEndProcDetect.Detach(wxPipe::Write);
+        execData.pipeEndProcDetect.Close();

 
 

-        // redirect stdio, stdout and stderr
-        if ( pipeIn[0] != -1 )
+        // redirect stdin, stdout and stderr
+        if ( pipeIn.IsOk() )

         {
         {

-            if ( dup2(pipeIn[0], STDIN_FILENO) == -1 ||
-                 dup2(pipeOut[1], STDOUT_FILENO) == -1 ||
-                 dup2(pipeErr[1], STDERR_FILENO) == -1 )
+            if ( dup2(pipeIn[wxPipe::Read], STDIN_FILENO) == -1 ||
+                 dup2(pipeOut[wxPipe::Write], STDOUT_FILENO) == -1 ||
+                 dup2(pipeErr[wxPipe::Write], STDERR_FILENO) == -1 )

             {
                 wxLogSysError(_("Failed to redirect child process input/output"));
             }
 
             {
                 wxLogSysError(_("Failed to redirect child process input/output"));
             }
 

-            close(pipeIn[0]);
-            close(pipeOut[1]);
-            close(pipeErr[1]);
+            pipeIn.Close();
+            pipeOut.Close();
+            pipeErr.Close();

         }
 
         }
 

-        execvp (*mb_argv, mb_argv);
+        execvp(*argv, argv);
+
+        fprintf(stderr, "execvp(");
+        for ( char **a = argv; *a; a++ )
+            fprintf(stderr, "%s%s", a == argv ? "" : ", ", *a);
+        fprintf(stderr, ") failed with error %d!\n", errno);

 
         // there is no return after successful exec()
         _exit(-1);
 
         // there is no return after successful exec()
         _exit(-1);


@@ -682,107 +590,75 @@ long wxExecute(wxChar **argv,
         // some compilers complain about missing return - of course, they
         // should know that exit() doesn't return but what else can we do if
         // they don't?
         // some compilers complain about missing return - of course, they
         // should know that exit() doesn't return but what else can we do if
         // they don't?

+        //
+        // and, sure enough, other compilers complain about unreachable code
+        // after exit() call, so we can just always have return here...

 #if defined(__VMS) || defined(__INTEL_COMPILER)
         return 0;
 #endif
     }
     else // we're in parent
     {
 #if defined(__VMS) || defined(__INTEL_COMPILER)
         return 0;
 #endif
     }
     else // we're in parent
     {

-        ARGS_CLEANUP;
-
-        // pipe initialization: construction of the wxStreams
-#if wxUSE_STREAMS
-        wxStreamTempBuffer bufIn, bufErr;
-#endif // wxUSE_STREAMS
-
-        if ( process && process->IsRedirected() )
-        {
-#if wxUSE_STREAMS
-            // in/out for subprocess correspond to our out/in
-            wxOutputStream *outStream = new wxProcessFileOutputStream(pipeIn[1]);
-            wxInputStream *inStream = new wxProcessFileInputStream(pipeOut[0]);
-            wxInputStream *errStream = new wxProcessFileInputStream(pipeErr[0]);
+        // save it for WaitForChild() use
+        execData.pid = pid;
+        if (execData.process)
+            execData.process->SetPid(pid);  // and also in the wxProcess

 
 

-            process->SetPipeStreams(inStream, outStream, errStream);
+        // prepare for IO redirection

 
 

-            bufIn.Init(inStream);
-            bufErr.Init(inStream);
-#endif // wxUSE_STREAMS
+#if HAS_PIPE_INPUT_STREAM
+        // the input buffer bufOut is connected to stdout, this is why it is
+        // called bufOut and not bufIn
+        wxStreamTempInputBuffer bufOut,
+                                bufErr;

 
 

-            close(pipeIn[0]); // close reading side
-            close(pipeOut[1]); // close writing side
-            close(pipeErr[1]); // close writing side
-        }
-
-#if wxUSE_GUI && !defined(__WXMICROWIN__)
-        wxEndProcessData *data = new wxEndProcessData;
-
-        if ( flags & wxEXEC_SYNC )
+        if ( process && process->IsRedirected() )

         {
         {

-            // we may have process for capturing the program output, but it's
-            // not used in wxEndProcessData in the case of sync execution
-            data->process = NULL;
+            wxOutputStream *inStream =
+                new wxFileOutputStream(pipeIn.Detach(wxPipe::Write));

 
 

-            // sync execution: indicate it by negating the pid
-            data->pid = -pid;
-            data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
+            const int fdOut = pipeOut.Detach(wxPipe::Read);
+            wxPipeInputStream *outStream = new wxPipeInputStream(fdOut);

 
 

-            close(end_proc_detect[1]); // close writing side
+            const int fdErr = pipeErr.Detach(wxPipe::Read);
+            wxPipeInputStream *errStream = new wxPipeInputStream(fdErr);

 
 

-            wxBusyCursor bc;
-            wxWindowDisabler wd;
+            process->SetPipeStreams(outStream, inStream, errStream);

 
 

-            // data->pid will be set to 0 from GTK_EndProcessDetector when the
-            // process terminates
-            while ( data->pid != 0 )
-            {
-#if wxUSE_STREAMS
-                bufIn.Update();
-                bufErr.Update();
-#endif // wxUSE_STREAMS
-
-                // give GTK+ a chance to call GTK_EndProcessDetector here and
-                // also repaint the GUI
-                wxYield();
-            }
+            bufOut.Init(outStream);
+            bufErr.Init(errStream);

 
 

-            int exitcode = data->exitcode;
+            execData.bufOut = &bufOut;
+            execData.bufErr = &bufErr;

 
 

-            delete data;
-
-            return exitcode;
-        }
-        else // async execution
-        {
-            // async execution, nothing special to do - caller will be
-            // notified about the process termination if process != NULL, data
-            // will be deleted in GTK_EndProcessDetector
-            data->process  = process;
-            data->pid      = pid;
-            data->tag      = wxAddProcessCallback(data, end_proc_detect[0]);
-
-            close(end_proc_detect[1]); // close writing side
-
-            return pid;
+            execData.fdOut = fdOut;
+            execData.fdErr = fdErr;

         }
         }

-#else // !wxUSE_GUI
-
-        wxASSERT_MSG( flags & wxEXEC_SYNC,
-                      wxT("async execution not supported yet") );
+#endif // HAS_PIPE_INPUT_STREAM

 
 

-        int exitcode = 0;
-        if ( waitpid(pid, &exitcode, 0) == -1 || !WIFEXITED(exitcode) )
+        if ( pipeIn.IsOk() )

         {
         {

-            wxLogSysError(_("Waiting for subprocess termination failed"));
+            pipeIn.Close();
+            pipeOut.Close();
+            pipeErr.Close();

         }
 
         }
 

-        return exitcode;
-#endif // wxUSE_GUI
+        // we want this function to work even if there is no wxApp so ensure
+        // that we have a valid traits pointer
+        wxConsoleAppTraits traitsConsole;
+        wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+        if ( !traits )
+            traits = &traitsConsole;
+
+        return traits->WaitForChild(execData);

     }
     }

+
+#if !defined(__VMS) && !defined(__INTEL_COMPILER)
+    return ERROR_RETURN_CODE;
+#endif

 }
 
 #undef ERROR_RETURN_CODE
 }
 
 #undef ERROR_RETURN_CODE

-#undef ARGS_CLEANUP

 
 // ----------------------------------------------------------------------------
 // file and directory functions
 
 // ----------------------------------------------------------------------------
 // file and directory functions


@@ -790,23 +666,19 @@ long wxExecute(wxChar **argv,
 
 const wxChar* wxGetHomeDir( wxString *home  )
 {
 
 const wxChar* wxGetHomeDir( wxString *home  )
 {

-    *home = wxGetUserHome( wxString() );
-   wxString tmp;
-    if ( home->IsEmpty() )
+    *home = wxGetUserHome();
+    wxString tmp;
+    if ( home->empty() )

         *home = wxT("/");
 #ifdef __VMS
         *home = wxT("/");
 #ifdef __VMS

-   tmp = *home;
-   if ( tmp.Last() != wxT(']'))
-     if ( tmp.Last() != wxT('/')) *home << wxT('/');
+    tmp = *home;
+    if ( tmp.Last() != wxT(']'))
+        if ( tmp.Last() != wxT('/')) *home << wxT('/');

 #endif
     return home->c_str();
 }
 
 #endif
     return home->c_str();
 }
 

-#if wxUSE_UNICODE
-const wxMB2WXbuf wxGetUserHome( const wxString &user )
-#else // just for binary compatibility -- there is no 'const' here
-char *wxGetUserHome( const wxString &user )
-#endif
+wxString wxGetUserHome( const wxString &user )

 {
     struct passwd *who = (struct passwd *) NULL;
 
 {
     struct passwd *who = (struct passwd *) NULL;
 


@@ -818,13 +690,15 @@ char *wxGetUserHome( const wxString &user )
         {
             return ptr;
         }
         {
             return ptr;
         }

-        if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)
+
+        if ((ptr = wxGetenv(wxT("USER"))) != NULL ||
+             (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)

         {
         {

-            who = getpwnam(wxConvertWX2MB(ptr));
+            who = getpwnam(wxSafeConvertWX2MB(ptr));

         }
 
         }
 

-        // We now make sure the the user exists!
-        if (who == NULL)
+        // make sure the user exists!
+        if ( !who )

         {
             who = getpwuid(getuid());
         }
         {
             who = getpwuid(getuid());
         }


@@ -834,19 +708,48 @@ char *wxGetUserHome( const wxString &user )
       who = getpwnam (user.mb_str());
     }
 
       who = getpwnam (user.mb_str());
     }
 

-    return wxConvertMB2WX(who ? who->pw_dir : 0);
+    return wxSafeConvertMB2WX(who ? who->pw_dir : 0);

 }
 
 // ----------------------------------------------------------------------------
 // network and user id routines
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // network and user id routines
 // ----------------------------------------------------------------------------
 

+// private utility function which returns output of the given command, removing
+// the trailing newline
+static wxString wxGetCommandOutput(const wxString &cmd)
+{
+    FILE *f = popen(cmd.ToAscii(), "r");
+    if ( !f )
+    {
+        wxLogSysError(wxT("Executing \"%s\" failed"), cmd.c_str());
+        return wxEmptyString;
+    }
+
+    wxString s;
+    char buf[256];
+    while ( !feof(f) )
+    {
+        if ( !fgets(buf, sizeof(buf), f) )
+            break;
+
+        s += wxString::FromAscii(buf);
+    }
+
+    pclose(f);
+
+    if ( !s.empty() && s.Last() == wxT('\n') )
+        s.RemoveLast();
+
+    return s;
+}
+

 // retrieve either the hostname or FQDN depending on platform (caller must
 // check whether it's one or the other, this is why this function is for
 // private use only)
 static bool wxGetHostNameInternal(wxChar *buf, int sz)
 {
 // retrieve either the hostname or FQDN depending on platform (caller must
 // check whether it's one or the other, this is why this function is for
 // private use only)
 static bool wxGetHostNameInternal(wxChar *buf, int sz)
 {

-    wxCHECK_MSG( buf, FALSE, wxT("NULL pointer in wxGetHostNameInternal") );
+    wxCHECK_MSG( buf, false, wxT("NULL pointer in wxGetHostNameInternal") );

 
     *buf = wxT('\0');
 
 
     *buf = wxT('\0');
 


@@ -856,15 +759,19 @@ static bool wxGetHostNameInternal(wxChar *buf, int sz)
     bool ok = uname(&uts) != -1;
     if ( ok )
     {
     bool ok = uname(&uts) != -1;
     if ( ok )
     {

-        wxStrncpy(buf, wxConvertMB2WX(uts.nodename), sz - 1);
-        buf[sz] = wxT('\0');
+        wxStrlcpy(buf, wxSafeConvertMB2WX(uts.nodename), sz);

     }
 #elif defined(HAVE_GETHOSTNAME)
     }
 #elif defined(HAVE_GETHOSTNAME)

-    bool ok = gethostname(buf, sz) != -1;
+    char cbuf[sz];
+    bool ok = gethostname(cbuf, sz) != -1;
+    if ( ok )
+    {
+        wxStrlcpy(buf, wxSafeConvertMB2WX(cbuf), sz);
+    }

 #else // no uname, no gethostname
     wxFAIL_MSG(wxT("don't know host name for this machine"));
 
 #else // no uname, no gethostname
     wxFAIL_MSG(wxT("don't know host name for this machine"));
 

-    bool ok = FALSE;
+    bool ok = false;

 #endif // uname/gethostname
 
     if ( !ok )
 #endif // uname/gethostname
 
     if ( !ok )


@@ -902,17 +809,17 @@ bool wxGetFullHostName(wxChar *buf, int sz)
     {
         if ( !wxStrchr(buf, wxT('.')) )
         {
     {
         if ( !wxStrchr(buf, wxT('.')) )
         {

-            struct hostent *host = gethostbyname(wxConvertWX2MB(buf));
+            struct hostent *host = gethostbyname(wxSafeConvertWX2MB(buf));

             if ( !host )
             {
                 wxLogSysError(_("Cannot get the official hostname"));
 
             if ( !host )
             {
                 wxLogSysError(_("Cannot get the official hostname"));
 

-                ok = FALSE;
+                ok = false;

             }
             else
             {
                 // the canonical name
             }
             else
             {
                 // the canonical name

-                wxStrncpy(buf, wxConvertMB2WX(host->h_name), sz);
+                wxStrlcpy(buf, wxSafeConvertMB2WX(host->h_name), sz);

             }
         }
         //else: it's already a FQDN (BSD behaves this way)
             }
         }
         //else: it's already a FQDN (BSD behaves this way)


@@ -928,72 +835,108 @@ bool wxGetUserId(wxChar *buf, int sz)
     *buf = wxT('\0');
     if ((who = getpwuid(getuid ())) != NULL)
     {
     *buf = wxT('\0');
     if ((who = getpwuid(getuid ())) != NULL)
     {

-        wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1);
-        return TRUE;
+        wxStrlcpy (buf, wxSafeConvertMB2WX(who->pw_name), sz);
+        return true;

     }
 
     }
 

-    return FALSE;
+    return false;

 }
 
 bool wxGetUserName(wxChar *buf, int sz)
 {
 }
 
 bool wxGetUserName(wxChar *buf, int sz)
 {

+#ifdef HAVE_PW_GECOS

     struct passwd *who;
 
     *buf = wxT('\0');
     if ((who = getpwuid (getuid ())) != NULL)
     {
     struct passwd *who;
 
     *buf = wxT('\0');
     if ((who = getpwuid (getuid ())) != NULL)
     {

-        // pw_gecos field in struct passwd is not standard
-#ifdef HAVE_PW_GECOS

        char *comma = strchr(who->pw_gecos, ',');
        if (comma)
            *comma = '\0'; // cut off non-name comment fields
        char *comma = strchr(who->pw_gecos, ',');
        if (comma)
            *comma = '\0'; // cut off non-name comment fields

-       wxStrncpy (buf, wxConvertMB2WX(who->pw_gecos), sz - 1);
+       wxStrlcpy(buf, wxSafeConvertMB2WX(who->pw_gecos), sz);
+       return true;
+    }
+
+    return false;

 #else // !HAVE_PW_GECOS
 #else // !HAVE_PW_GECOS

-       wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1);
+    return wxGetUserId(buf, sz);

 #endif // HAVE_PW_GECOS/!HAVE_PW_GECOS
 #endif // HAVE_PW_GECOS/!HAVE_PW_GECOS

-       return TRUE;
-    }
+}

 
 

-    return FALSE;
+bool wxIsPlatform64Bit()
+{
+    const wxString machine = wxGetCommandOutput(wxT("uname -m"));
+
+    // the test for "64" is obviously not 100% reliable but seems to work fine
+    // in practice
+    return machine.Contains(wxT("64")) ||
+                machine.Contains(wxT("alpha"));

 }
 
 }
 

-#ifndef __WXMAC__
-wxString wxGetOsDescription()
+#ifdef __LINUX__
+wxLinuxDistributionInfo wxGetLinuxDistributionInfo()

 {
 {

-#ifndef WXWIN_OS_DESCRIPTION
-    #error WXWIN_OS_DESCRIPTION should be defined in config.h by configure
-#else
-    return WXWIN_OS_DESCRIPTION;
-#endif
+    const wxString id = wxGetCommandOutput(wxT("lsb_release --id"));
+    const wxString desc = wxGetCommandOutput(wxT("lsb_release --description"));
+    const wxString rel = wxGetCommandOutput(wxT("lsb_release --release"));
+    const wxString codename = wxGetCommandOutput(wxT("lsb_release --codename"));
+
+    wxLinuxDistributionInfo ret;
+
+    id.StartsWith("Distributor ID:\t", &ret.Id);
+    desc.StartsWith("Description:\t", &ret.Description);
+    rel.StartsWith("Release:\t", &ret.Release);
+    codename.StartsWith("Codename:\t", &ret.CodeName);
+
+    return ret;

 }
 #endif
 
 }
 #endif
 

-// this function returns the GUI toolkit version in GUI programs, but OS
-// version in non-GUI ones
-#if !wxUSE_GUI
+// these functions are in src/osx/utilsexc_base.cpp for wxMac
+#ifndef __WXMAC__

 
 

-int wxGetOsVersion(int *majorVsn, int *minorVsn)
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)

 {
 {

+    // get OS version

     int major, minor;
     int major, minor;

-    char name[256];
-
-    if ( sscanf(WXWIN_OS_DESCRIPTION, "%s %d.%d", name, &major, &minor) != 3 )
+    wxString release = wxGetCommandOutput(wxT("uname -r"));
+    if ( release.empty() ||
+         wxSscanf(release.c_str(), wxT("%d.%d"), &major, &minor) != 2 )

     {
     {

-        // unreckognized uname string format
-        major = minor = -1;
+        // failed to get version string or unrecognized format
+        major =
+        minor = -1;

     }
 
     }
 

-    if ( majorVsn )
-        *majorVsn = major;
-    if ( minorVsn )
-        *minorVsn = minor;
+    if ( verMaj )
+        *verMaj = major;
+    if ( verMin )
+        *verMin = minor;

 
 

-    return wxUNIX;
+    // try to understand which OS are we running
+    wxString kernel = wxGetCommandOutput(wxT("uname -s"));
+    if ( kernel.empty() )
+        kernel = wxGetCommandOutput(wxT("uname -o"));
+
+    if ( kernel.empty() )
+        return wxOS_UNKNOWN;
+
+    return wxPlatformInfo::GetOperatingSystemId(kernel);

 }
 
 }
 

-#endif // !wxUSE_GUI
+wxString wxGetOsDescription()
+{
+    return wxGetCommandOutput(wxT("uname -s -r -m"));
+}
+
+#endif // !__WXMAC__
+
+unsigned long wxGetProcessId()
+{
+    return (unsigned long)getpid();
+}

 
 

-long wxGetFreeMemory()
+wxMemorySize wxGetFreeMemory()

 {
 #if defined(__LINUX__)
     // get it from /proc/meminfo
 {
 #if defined(__LINUX__)
     // get it from /proc/meminfo


@@ -1005,16 +948,43 @@ long wxGetFreeMemory()
         char buf[1024];
         if ( fgets(buf, WXSIZEOF(buf), fp) && fgets(buf, WXSIZEOF(buf), fp) )
         {
         char buf[1024];
         if ( fgets(buf, WXSIZEOF(buf), fp) && fgets(buf, WXSIZEOF(buf), fp) )
         {

-            long memTotal, memUsed;
-            sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree);
+            // /proc/meminfo changed its format in kernel 2.6
+            if ( wxPlatformInfo().CheckOSVersion(2, 6) )
+            {
+                unsigned long cached, buffers;
+                sscanf(buf, "MemFree: %ld", &memFree);
+
+                fgets(buf, WXSIZEOF(buf), fp);
+                sscanf(buf, "Buffers: %lu", &buffers);
+
+                fgets(buf, WXSIZEOF(buf), fp);
+                sscanf(buf, "Cached: %lu", &cached);
+
+                // add to "MemFree" also the "Buffers" and "Cached" values as
+                // free(1) does as otherwise the value never makes sense: for
+                // kernel 2.6 it's always almost 0
+                memFree += buffers + cached;
+
+                // values here are always expressed in kB and we want bytes
+                memFree *= 1024;
+            }
+            else // Linux 2.4 (or < 2.6, anyhow)
+            {
+                long memTotal, memUsed;
+                sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree);
+            }

         }
 
         fclose(fp);
 
         }
 
         fclose(fp);
 

-        return memFree;
+        return (wxMemorySize)memFree;

     }
     }

-#elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES)
-    return sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE);
+#elif defined(__SGI__)
+    struct rminfo realmem;
+    if ( sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0 )
+        return ((wxMemorySize)realmem.physmem * sysconf(_SC_PAGESIZE));
+#elif defined(_SC_AVPHYS_PAGES)
+    return ((wxMemorySize)sysconf(_SC_AVPHYS_PAGES))*sysconf(_SC_PAGESIZE);

 //#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably
 #endif
 
 //#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably
 #endif
 


@@ -1022,81 +992,145 @@ long wxGetFreeMemory()
     return -1;
 }
 
     return -1;
 }
 

-bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
+bool wxGetDiskSpace(const wxString& path, wxDiskspaceSize_t *pTotal, wxDiskspaceSize_t *pFree)

 {
 #if defined(HAVE_STATFS) || defined(HAVE_STATVFS)
     // the case to "char *" is needed for AIX 4.3
 {
 #if defined(HAVE_STATFS) || defined(HAVE_STATVFS)
     // the case to "char *" is needed for AIX 4.3

-    struct statfs fs;
-    if ( statfs((char *)path.fn_str(), &fs) != 0 )
+    wxStatfs_t fs;
+    if ( wxStatfs((char *)(const char*)path.fn_str(), &fs) != 0 )

     {
     {

-        wxLogSysError("Failed to get file system statistics");
+        wxLogSysError( wxT("Failed to get file system statistics") );

 
 

-        return FALSE;
+        return false;

     }
 
     }
 

-    // under Solaris we might have to use fs.f_frsize instead as I think it
-    // may be a multiple of the block size in general (TODO)
+    // under Solaris we also have to use f_frsize field instead of f_bsize
+    // which is in general a multiple of f_frsize
+#ifdef HAVE_STATVFS
+    wxDiskspaceSize_t blockSize = fs.f_frsize;
+#else // HAVE_STATFS
+    wxDiskspaceSize_t blockSize = fs.f_bsize;
+#endif // HAVE_STATVFS/HAVE_STATFS

 
     if ( pTotal )
     {
 
     if ( pTotal )
     {

-        *pTotal = wxLongLong(fs.f_blocks) * fs.f_bsize;
+        *pTotal = wxDiskspaceSize_t(fs.f_blocks) * blockSize;

     }
 
     if ( pFree )
     {
     }
 
     if ( pFree )
     {

-        *pFree = wxLongLong(fs.f_bavail) * fs.f_bsize;
+        *pFree = wxDiskspaceSize_t(fs.f_bavail) * blockSize;

     }
 
     }
 

-    return TRUE;
+    return true;
+#else // !HAVE_STATFS && !HAVE_STATVFS
+    return false;

 #endif // HAVE_STATFS
 #endif // HAVE_STATFS

-
-    return FALSE;

 }
 
 // ----------------------------------------------------------------------------
 // env vars
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // env vars
 // ----------------------------------------------------------------------------
 

+#if USE_PUTENV
+
+WX_DECLARE_STRING_HASH_MAP(char *, wxEnvVars);
+
+static wxEnvVars gs_envVars;
+
+class wxSetEnvModule : public wxModule
+{
+public:
+    virtual bool OnInit() { return true; }
+    virtual void OnExit()
+    {
+        for ( wxEnvVars::const_iterator i = gs_envVars.begin();
+              i != gs_envVars.end();
+              ++i )
+        {
+            free(i->second);
+        }
+
+        gs_envVars.clear();
+    }
+
+    DECLARE_DYNAMIC_CLASS(wxSetEnvModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxSetEnvModule, wxModule)
+
+#endif // USE_PUTENV
+

 bool wxGetEnv(const wxString& var, wxString *value)
 {
     // wxGetenv is defined as getenv()
 bool wxGetEnv(const wxString& var, wxString *value)
 {
     // wxGetenv is defined as getenv()

-    wxChar *p = wxGetenv(var);
+    char *p = wxGetenv(var);

     if ( !p )
     if ( !p )

-        return FALSE;
+        return false;

 
     if ( value )
     {
         *value = p;
     }
 
 
     if ( value )
     {
         *value = p;
     }
 

-    return TRUE;
+    return true;

 }
 
 }
 

-bool wxSetEnv(const wxString& variable, const wxChar *value)
+static bool wxDoSetEnv(const wxString& variable, const char *value)

 {
 #if defined(HAVE_SETENV)
 {
 #if defined(HAVE_SETENV)

-    return setenv(variable.mb_str(),
-                  value ? (const char *)wxString(value).mb_str()
-                        : NULL,
-                  1 /* overwrite */) == 0;
+    if ( !value )
+    {
+#ifdef HAVE_UNSETENV
+        // don't test unsetenv() return value: it's void on some systems (at
+        // least Darwin)
+        unsetenv(variable.mb_str());
+        return true;
+#else
+        value = ""; // we can't pass NULL to setenv()
+#endif
+    }
+
+    return setenv(variable.mb_str(), value, 1 /* overwrite */) == 0;

 #elif defined(HAVE_PUTENV)
     wxString s = variable;
     if ( value )
 #elif defined(HAVE_PUTENV)
     wxString s = variable;
     if ( value )

-        s << _T('=') << value;
+        s << wxT('=') << value;

 
     // transform to ANSI
 
     // transform to ANSI

-    const char *p = s.mb_str();
+    const wxWX2MBbuf p = s.mb_str();

 
 

-    // the string will be free()d by libc

     char *buf = (char *)malloc(strlen(p) + 1);
     strcpy(buf, p);
 
     char *buf = (char *)malloc(strlen(p) + 1);
     strcpy(buf, p);
 

+    // store the string to free() it later
+    wxEnvVars::iterator i = gs_envVars.find(variable);
+    if ( i != gs_envVars.end() )
+    {
+        free(i->second);
+        i->second = buf;
+    }
+    else // this variable hadn't been set before
+    {
+        gs_envVars[variable] = buf;
+    }
+

     return putenv(buf) == 0;
 #else // no way to set an env var
     return putenv(buf) == 0;
 #else // no way to set an env var

-    return FALSE;
+    return false;

 #endif
 }
 
 #endif
 }
 

+bool wxSetEnv(const wxString& variable, const wxString& value)
+{
+    return wxDoSetEnv(variable, value.mb_str());
+}
+
+bool wxUnsetEnv(const wxString& variable)
+{
+    return wxDoSetEnv(variable, NULL);
+}
+

 // ----------------------------------------------------------------------------
 // signal handling
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // signal handling
 // ----------------------------------------------------------------------------


@@ -1119,13 +1153,13 @@ extern "C" void wxFatalSignalHandler(wxTYPE_SA_HANDLER)
 bool wxHandleFatalExceptions(bool doit)
 {
     // old sig handlers
 bool wxHandleFatalExceptions(bool doit)
 {
     // old sig handlers

-    static bool s_savedHandlers = FALSE;
+    static bool s_savedHandlers = false;

     static struct sigaction s_handlerFPE,
                             s_handlerILL,
                             s_handlerBUS,
                             s_handlerSEGV;
 
     static struct sigaction s_handlerFPE,
                             s_handlerILL,
                             s_handlerBUS,
                             s_handlerSEGV;
 

-    bool ok = TRUE;
+    bool ok = true;

     if ( doit && !s_savedHandlers )
     {
         // install the signal handler
     if ( doit && !s_savedHandlers )
     {
         // install the signal handler


@@ -1144,10 +1178,10 @@ bool wxHandleFatalExceptions(bool doit)
         ok &= sigaction(SIGSEGV, &act, &s_handlerSEGV) == 0;
         if ( !ok )
         {
         ok &= sigaction(SIGSEGV, &act, &s_handlerSEGV) == 0;
         if ( !ok )
         {

-            wxLogDebug(_T("Failed to install our signal handler."));
+            wxLogDebug(wxT("Failed to install our signal handler."));

         }
 
         }
 

-        s_savedHandlers = TRUE;
+        s_savedHandlers = true;

     }
     else if ( s_savedHandlers )
     {
     }
     else if ( s_savedHandlers )
     {


@@ -1158,10 +1192,10 @@ bool wxHandleFatalExceptions(bool doit)
         ok &= sigaction(SIGSEGV, &s_handlerSEGV, NULL) == 0;
         if ( !ok )
         {
         ok &= sigaction(SIGSEGV, &s_handlerSEGV, NULL) == 0;
         if ( !ok )
         {

-            wxLogDebug(_T("Failed to uninstall our signal handler."));
+            wxLogDebug(wxT("Failed to uninstall our signal handler."));

         }
 
         }
 

-        s_savedHandlers = FALSE;
+        s_savedHandlers = false;

     }
     //else: nothing to do
 
     }
     //else: nothing to do
 


@@ -1171,36 +1205,262 @@ bool wxHandleFatalExceptions(bool doit)
 #endif // wxUSE_ON_FATAL_EXCEPTION
 
 // ----------------------------------------------------------------------------
 #endif // wxUSE_ON_FATAL_EXCEPTION
 
 // ----------------------------------------------------------------------------

-// error and debug output routines (deprecated, use wxLog)
+// wxExecute support

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-#if WXWIN_COMPATIBILITY_2_2
+int wxAppTraits::AddProcessCallback(wxEndProcessData *data, int fd)
+{
+    // define a custom handler processing only the closure of the descriptor
+    struct wxEndProcessFDIOHandler : public wxFDIOHandler
+    {
+        wxEndProcessFDIOHandler(wxEndProcessData *data, int fd)
+            : m_data(data), m_fd(fd)
+        {
+        }
+
+        virtual void OnReadWaiting()
+        {
+            wxFDIODispatcher::Get()->UnregisterFD(m_fd);
+            close(m_fd);
+
+            wxHandleProcessTermination(m_data);
+
+            delete this;
+        }
+
+        virtual void OnWriteWaiting() { wxFAIL_MSG("unreachable"); }
+        virtual void OnExceptionWaiting() { wxFAIL_MSG("unreachable"); }
+
+        wxEndProcessData * const m_data;
+        const int m_fd;
+    };

 
 

-void wxDebugMsg( const char *format, ... )
+    wxFDIODispatcher::Get()->RegisterFD
+                             (
+                                 fd,
+                                 new wxEndProcessFDIOHandler(data, fd),
+                                 wxFDIO_INPUT
+                             );
+    return fd; // unused, but return something unique for the tag
+}
+
+bool wxAppTraits::CheckForRedirectedIO(wxExecuteData& execData)

 {
 {

-  va_list ap;
-  va_start( ap, format );
-  vfprintf( stderr, format, ap );
-  fflush( stderr );
-  va_end(ap);
+#if HAS_PIPE_INPUT_STREAM
+    bool hasIO = false;
+
+    if ( execData.bufOut && execData.bufOut->Update() )
+        hasIO = true;
+
+    if ( execData.bufErr && execData.bufErr->Update() )
+        hasIO = true;
+
+    return hasIO;
+#else // !HAS_PIPE_INPUT_STREAM
+    return false;
+#endif // HAS_PIPE_INPUT_STREAM/!HAS_PIPE_INPUT_STREAM

 }
 
 }
 

-void wxError( const wxString &msg, const wxString &title )
+// helper classes/functions used by WaitForChild()
+namespace
+{
+
+// convenient base class for IO handlers which are registered for read
+// notifications only and which also stores the FD we're reading from
+//
+// the derived classes still have to implement OnReadWaiting()
+class wxReadFDIOHandler : public wxFDIOHandler
+{
+public:
+    wxReadFDIOHandler(wxFDIODispatcher& disp, int fd) : m_fd(fd)
+    {
+        if ( fd )
+            disp.RegisterFD(fd, this, wxFDIO_INPUT);
+    }
+
+    virtual void OnWriteWaiting() { wxFAIL_MSG("unreachable"); }
+    virtual void OnExceptionWaiting() { wxFAIL_MSG("unreachable"); }
+
+protected:
+    const int m_fd;
+
+    wxDECLARE_NO_COPY_CLASS(wxReadFDIOHandler);
+};
+
+// class for monitoring our end of the process detection pipe, simply sets a
+// flag when input on the pipe (which must be due to EOF) is detected
+class wxEndHandler : public wxReadFDIOHandler
+{
+public:
+    wxEndHandler(wxFDIODispatcher& disp, int fd)
+        : wxReadFDIOHandler(disp, fd)
+    {
+        m_terminated = false;
+    }
+
+    bool Terminated() const { return m_terminated; }
+
+    virtual void OnReadWaiting() { m_terminated = true; }
+
+private:
+    bool m_terminated;
+
+    wxDECLARE_NO_COPY_CLASS(wxEndHandler);
+};
+
+#if HAS_PIPE_INPUT_STREAM
+
+// class for monitoring our ends of child stdout/err, should be constructed
+// with the FD and stream from wxExecuteData and will do nothing if they're
+// invalid
+//
+// unlike wxEndHandler this class registers itself with the provided dispatcher
+class wxRedirectedIOHandler : public wxReadFDIOHandler

 {
 {

-  wxFprintf( stderr, _("Error ") );
-  if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) );
-  if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) );
-  wxFprintf( stderr, wxT(".\n") );
+public:
+    wxRedirectedIOHandler(wxFDIODispatcher& disp,
+                          int fd,
+                          wxStreamTempInputBuffer *buf)
+        : wxReadFDIOHandler(disp, fd),
+          m_buf(buf)
+    {
+    }
+
+    virtual void OnReadWaiting()
+    {
+        m_buf->Update();
+    }
+
+private:
+    wxStreamTempInputBuffer * const m_buf;
+
+    wxDECLARE_NO_COPY_CLASS(wxRedirectedIOHandler);
+};
+
+#endif // HAS_PIPE_INPUT_STREAM
+
+// helper function which calls waitpid() and analyzes the result
+int DoWaitForChild(int pid, int flags = 0)
+{
+    wxASSERT_MSG( pid > 0, "invalid PID" );
+
+    int status, rc;
+
+    // loop while we're getting EINTR
+    for ( ;; )
+    {
+        rc = waitpid(pid, &status, flags);
+
+        if ( rc != -1 || errno != EINTR )
+            break;
+    }
+
+    if ( rc == 0 )
+    {
+        // This can only happen if the child application closes our dummy pipe
+        // that is used to monitor its lifetime; in that case, our best bet is
+        // to pretend the process did terminate, because otherwise wxExecute()
+        // would hang indefinitely (OnReadWaiting() won't be called again, the
+        // descriptor is closed now).
+        wxLogDebug("Child process (PID %d) still alive but pipe closed so "
+                   "generating a close notification", pid);
+    }
+    else if ( rc == -1 )
+    {
+        wxLogLastError(wxString::Format("waitpid(%d)", pid));
+    }
+    else // child did terminate
+    {
+        wxASSERT_MSG( rc == pid, "unexpected waitpid() return value" );
+
+        if ( WIFEXITED(status) )
+            return WEXITSTATUS(status);
+        else if ( WIFSIGNALED(status) )
+            return -WTERMSIG(status);
+        else
+        {
+            wxLogError("Child process (PID %d) exited for unknown reason, "
+                       "status = %d", pid, status);
+        }
+    }
+
+    return -1;

 }
 
 }
 

-void wxFatalError( const wxString &msg, const wxString &title )
+} // anonymous namespace
+
+int wxAppTraits::WaitForChild(wxExecuteData& execData)

 {
 {

-  wxFprintf( stderr, _("Error ") );
-  if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) );
-  if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) );
-  wxFprintf( stderr, wxT(".\n") );
-  exit(3); // the same exit code as for abort()
+    if ( !(execData.flags & wxEXEC_SYNC) )
+    {
+        // asynchronous execution: just launch the process and return,
+        // endProcData will be destroyed when it terminates (currently we leak
+        // it if the process doesn't terminate before we do and this should be
+        // fixed but it's not a real leak so it's not really very high
+        // priority)
+        wxEndProcessData *endProcData = new wxEndProcessData;
+        endProcData->process = execData.process;
+        endProcData->pid = execData.pid;
+        endProcData->tag = AddProcessCallback
+                           (
+                             endProcData,
+                             execData.GetEndProcReadFD()
+                           );
+        endProcData->async = true;
+
+        return execData.pid;
+    }
+    //else: synchronous execution case
+
+#if HAS_PIPE_INPUT_STREAM
+    wxProcess * const process = execData.process;
+    if ( process && process->IsRedirected() )
+    {
+        // we can't simply block waiting for the child to terminate as we would
+        // dead lock if it writes more than the pipe buffer size (typically
+        // 4KB) bytes of output -- it would then block waiting for us to read
+        // the data while we'd block waiting for it to terminate
+        //
+        // so multiplex here waiting for any input from the child or closure of
+        // the pipe used to indicate its termination
+        wxSelectDispatcher disp;
+
+        wxEndHandler endHandler(disp, execData.GetEndProcReadFD());
+
+        wxRedirectedIOHandler outHandler(disp, execData.fdOut, execData.bufOut),
+                              errHandler(disp, execData.fdErr, execData.bufErr);
+
+        while ( !endHandler.Terminated() )
+        {
+            disp.Dispatch();
+        }
+    }
+    //else: no IO redirection, just block waiting for the child to exit
+#endif // HAS_PIPE_INPUT_STREAM
+
+    return DoWaitForChild(execData.pid);

 }
 
 }
 

-#endif // WXWIN_COMPATIBILITY_2_2
+void wxHandleProcessTermination(wxEndProcessData *data)
+{
+    data->exitcode = DoWaitForChild(data->pid, WNOHANG);
+
+    // notify user about termination if required
+    if ( data->process )
+    {
+        data->process->OnTerminate(data->pid, data->exitcode);
+    }
+
+    if ( data->async )
+    {
+        // in case of asynchronous execution we don't need this data any more
+        // after the child terminates
+        delete data;
+    }
+    else // sync execution
+    {
+        // let wxExecute() know that the process has terminated
+        data->pid = 0;
+    }
+}