mac cleanup, pure cgcolor

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

diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp
index 33caa09fb5690784f7c7d93fba68fc1cd7e3d9c9..7f275de250f23a9426564c9262d4723475fd1f64 100644 (file)
--- a/src/unix/utilsunx.cpp
+++ b/src/unix/utilsunx.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        unix/utilsunx.cpp
+// Name:        src/unix/utilsunx.cpp

 // Purpose:     generic Unix implementation of many wx functions
 // Author:      Vadim Zeitlin
 // Id:          $Id$
 // Purpose:     generic Unix implementation of many wx functions
 // Author:      Vadim Zeitlin
 // Id:          $Id$


@@ -15,34 +15,51 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#include <pwd.h>
-

 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

-#include "wx/defs.h"
-#include "wx/string.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/intl.h"
-#include "wx/log.h"
-#include "wx/app.h"

 #include "wx/apptrait.h"
 
 #include "wx/apptrait.h"
 

-#include "wx/utils.h"

 #include "wx/process.h"
 #include "wx/thread.h"
 
 #include "wx/wfstream.h"
 
 #include "wx/unix/execute.h"
 #include "wx/process.h"
 #include "wx/thread.h"
 
 #include "wx/wfstream.h"
 
 #include "wx/unix/execute.h"

+#include "wx/unix/private.h"
+
+#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 wxUSE_STREAMS
+#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"
 
 
 // define this to let wxexec.cpp know that we know what we're doing
 #define _WX_USED_BY_WXEXECUTE_
 #include "../common/execcmn.cpp"
 

-#endif // wxUSE_STREAMS
+#endif // HAS_PIPE_INPUT_STREAM

 
 #if wxUSE_BASE
 
 
 #if wxUSE_BASE
 


@@ -80,6 +97,11 @@
     #endif // __BSD__/!__BSD__
 
     #define wxStatfs statfs
     #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
 #endif // HAVE_STATFS
 
 #ifdef HAVE_STATVFS


@@ -118,6 +140,12 @@
     #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
 // ----------------------------------------------------------------------------


@@ -131,21 +159,17 @@
      defined(__osf__) || defined(__EMX__))
     extern "C"
     {
      defined(__osf__) || defined(__EMX__))
     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


@@ -246,7 +270,8 @@ long wxMacExecute(wxChar **argv,
 long wxExecute( const wxString& command, int flags, wxProcess *process )
 {
     wxCHECK_MSG( !command.empty(), 0, wxT("can't exec empty command") );
 long wxExecute( const wxString& command, int flags, wxProcess *process )
 {
     wxCHECK_MSG( !command.empty(), 0, wxT("can't exec empty command") );

-    wxLogDebug(wxString(wxT("Launching: ")) + command);
+
+    wxLogTrace(wxT("exec"), wxT("Executing \"%s\""), command.c_str());

 
 #if wxUSE_THREADS
     // fork() doesn't mix well with POSIX threads: on many systems the program
 
 #if wxUSE_THREADS
     // fork() doesn't mix well with POSIX threads: on many systems the program


@@ -268,7 +293,7 @@ long wxExecute( const wxString& command, int flags, wxProcess *process )
     // split the command line in arguments
     do
     {
     // split the command line in arguments
     do
     {

-        argument=wxT("");
+        argument = wxEmptyString;

         quotechar = wxT('\0');
 
         // eat leading whitespace:
         quotechar = wxT('\0');
 
         // eat leading whitespace:


@@ -316,10 +341,10 @@ long wxExecute( const wxString& command, int flags, wxProcess *process )
     long lRc;
 #if defined(__DARWIN__)
     // wxMacExecute only executes app bundles.
     long lRc;
 #if defined(__DARWIN__)
     // wxMacExecute only executes app bundles.

-    // It returns -1 if the target is not an app bundle, thus falling through
-    // to the regular wxExecute for non app bundles.
+    // It returns an error code if the target is not an app bundle, thus falling
+    // through to the regular wxExecute for non app bundles.

     lRc = wxMacExecute(argv, flags, process);
     lRc = wxMacExecute(argv, flags, process);

-    if( lRc != -1)
+    if( lRc != ((flags & wxEXEC_SYNC) ? -1 : 0))

         return lRc;
 #endif
 
         return lRc;
 #endif
 


@@ -389,23 +414,11 @@ bool wxShutdown(wxShutdownFlags wFlags)
     return system(wxString::Format(_T("init %c"), level).mb_str()) == 0;
 }
 
     return system(wxString::Format(_T("init %c"), level).mb_str()) == 0;
 }
 

-wxPowerType wxGetPowerType()
-{
-    // TODO
-    return wxPOWER_UNKNOWN;
-}
-
-wxBatteryState wxGetBatteryState()
-{
-    // TODO
-    return wxBATTERY_UNKNOWN_STATE;
-}
-

 // ----------------------------------------------------------------------------
 // wxStream classes to support IO redirection in wxExecute
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxStream classes to support IO redirection in wxExecute
 // ----------------------------------------------------------------------------
 

-#if wxUSE_STREAMS
+#if HAS_PIPE_INPUT_STREAM

 
 bool wxPipeInputStream::CanRead() const
 {
 
 bool wxPipeInputStream::CanRead() const
 {


@@ -420,8 +433,10 @@ bool wxPipeInputStream::CanRead() const
     const int fd = m_file->fd();
 
     fd_set readfds;
     const int fd = m_file->fd();
 
     fd_set readfds;

-    FD_ZERO(&readfds);
-    FD_SET(fd, &readfds);
+
+    wxFD_ZERO(&readfds);
+    wxFD_SET(fd, &readfds);
+

     switch ( select(fd + 1, &readfds, NULL, NULL, &tv) )
     {
         case -1:
     switch ( select(fd + 1, &readfds, NULL, NULL, &tv) )
     {
         case -1:


@@ -443,19 +458,13 @@ bool wxPipeInputStream::CanRead() const
     }
 }
 
     }
 }
 

-#endif // wxUSE_STREAMS
+#endif // HAS_PIPE_INPUT_STREAM

 
 // ----------------------------------------------------------------------------
 // wxExecute: the real worker function
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // wxExecute: the real worker function
 // ----------------------------------------------------------------------------
 

-#ifdef __VMS
-    #pragma message disable codeunreachable
-#endif
-               
-long wxExecute(wxChar **argv,
-               int flags,
-               wxProcess *process)
+long wxExecute(wxChar **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


@@ -472,7 +481,7 @@ long wxExecute(wxChar **argv,
 
     while (argv[mb_argc])
     {
 
     while (argv[mb_argc])
     {

-        wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
+        wxWX2MBbuf mb_arg = wxSafeConvertWX2MB(argv[mb_argc]);

         mb_argv[mb_argc] = strdup(mb_arg);
         mb_argc++;
     }
         mb_argv[mb_argc] = strdup(mb_arg);
         mb_argc++;
     }


@@ -604,7 +613,7 @@ long wxExecute(wxChar **argv,
         }
 
         execvp (*mb_argv, mb_argv);
         }
 
         execvp (*mb_argv, mb_argv);

-       
+

         fprintf(stderr, "execvp(");
         // CS changed ppc to ppc_ as ppc is not available under mac os CW Mach-O
         for ( char **ppc_ = mb_argv; *ppc_; ppc_++ )
         fprintf(stderr, "execvp(");
         // CS changed ppc to ppc_ as ppc is not available under mac os CW Mach-O
         for ( char **ppc_ = mb_argv; *ppc_; ppc_++ )


@@ -633,16 +642,16 @@ long wxExecute(wxChar **argv,
 
         // prepare for IO redirection
 
 
         // prepare for IO redirection
 

-#if 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;
         // the input buffer bufOut is connected to stdout, this is why it is
         // called bufOut and not bufIn
         wxStreamTempInputBuffer bufOut,
                                 bufErr;

-#endif // wxUSE_STREAMS
+#endif // HAS_PIPE_INPUT_STREAM

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

-#if wxUSE_STREAMS
+#if HAS_PIPE_INPUT_STREAM

             wxOutputStream *inStream =
                 new wxFileOutputStream(pipeIn.Detach(wxPipe::Write));
 
             wxOutputStream *inStream =
                 new wxFileOutputStream(pipeIn.Detach(wxPipe::Write));
 


@@ -659,7 +668,7 @@ long wxExecute(wxChar **argv,
 
             execData.bufOut = &bufOut;
             execData.bufErr = &bufErr;
 
             execData.bufOut = &bufOut;
             execData.bufErr = &bufErr;

-#endif // wxUSE_STREAMS
+#endif // HAS_PIPE_INPUT_STREAM

         }
 
         if ( pipeIn.IsOk() )
         }
 
         if ( pipeIn.IsOk() )


@@ -672,12 +681,10 @@ long wxExecute(wxChar **argv,
         return traits->WaitForChild(execData);
     }
 
         return traits->WaitForChild(execData);
     }
 

+#if !defined(__VMS) && !defined(__INTEL_COMPILER)

     return ERROR_RETURN_CODE;
     return ERROR_RETURN_CODE;

-}
-
-#ifdef __VMS
-    #pragma message enable codeunreachable

 #endif
 #endif

+}

 
 #undef ERROR_RETURN_CODE
 #undef ARGS_CLEANUP
 
 #undef ERROR_RETURN_CODE
 #undef ARGS_CLEANUP


@@ -688,7 +695,7 @@ long wxExecute(wxChar **argv,
 
 const wxChar* wxGetHomeDir( wxString *home  )
 {
 
 const wxChar* wxGetHomeDir( wxString *home  )
 {

-    *home = wxGetUserHome( wxEmptyString );
+    *home = wxGetUserHome();

     wxString tmp;
     if ( home->empty() )
         *home = wxT("/");
     wxString tmp;
     if ( home->empty() )
         *home = wxT("/");


@@ -700,11 +707,7 @@ const wxChar* wxGetHomeDir( wxString *home  )
     return home->c_str();
 }
 
     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;
 


@@ -714,20 +717,17 @@ char *wxGetUserHome( const wxString &user )
 
         if ((ptr = wxGetenv(wxT("HOME"))) != NULL)
         {
 
         if ((ptr = wxGetenv(wxT("HOME"))) != NULL)
         {

-#if wxUSE_UNICODE
-            wxWCharBuffer buffer( ptr );
-            return buffer;
-#else

             return ptr;
             return ptr;

-#endif

         }
         }

-        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());
         }


@@ -737,13 +737,42 @@ 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(_T("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() == _T('\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)
 // 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)


@@ -759,11 +788,17 @@ 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);
+        wxStrncpy(buf, wxSafeConvertMB2WX(uts.nodename), sz - 1);

         buf[sz] = wxT('\0');
     }
 #elif defined(HAVE_GETHOSTNAME)
         buf[sz] = wxT('\0');
     }
 #elif defined(HAVE_GETHOSTNAME)

-    bool ok = gethostname(buf, sz) != -1;
+    char cbuf[sz];
+    bool ok = gethostname(cbuf, sz) != -1;
+    if ( ok )
+    {
+        wxStrncpy(buf, wxSafeConvertMB2WX(cbuf), sz - 1);
+        buf[sz] = wxT('\0');
+    }

 #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"));
 


@@ -805,7 +840,7 @@ 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"));


@@ -815,7 +850,7 @@ bool wxGetFullHostName(wxChar *buf, int sz)
             else
             {
                 // the canonical name
             else
             {
                 // the canonical name

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


@@ -831,7 +866,7 @@ 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);
+        wxStrncpy (buf, wxSafeConvertMB2WX(who->pw_name), sz - 1);

         return true;
     }
 
         return true;
     }
 


@@ -840,45 +875,70 @@ bool wxGetUserId(wxChar *buf, int sz)
 
 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);
-#else // !HAVE_PW_GECOS
-       wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1);
-#endif // HAVE_PW_GECOS/!HAVE_PW_GECOS
+       wxStrncpy (buf, wxSafeConvertMB2WX(who->pw_gecos), sz - 1);

        return true;
     }
 
     return false;
        return true;
     }
 
     return false;

+#else // !HAVE_PW_GECOS
+    return wxGetUserId(buf, sz);
+#endif // HAVE_PW_GECOS/!HAVE_PW_GECOS
+}
+
+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"));

 }
 
 }
 

-// this function is in mac/utils.cpp for wxMac
+// these functions are in mac/utils.cpp for wxMac

 #ifndef __WXMAC__
 
 #ifndef __WXMAC__
 

-wxString wxGetOsDescription()
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)

 {
 {

-    FILE *f = popen("uname -s -r -m", "r");
-    if (f)
+    // get OS version
+    int major, minor;
+    wxString release = wxGetCommandOutput(wxT("uname -r"));
+    if ( release.empty() ||
+         wxSscanf(release.c_str(), wxT("%d.%d"), &major, &minor) != 2 )

     {
     {

-        char buf[256];
-        size_t c = fread(buf, 1, sizeof(buf) - 1, f);
-        pclose(f);
-        // Trim newline from output.
-        if (c && buf[c - 1] == '\n')
-            --c;
-        buf[c] = '\0';
-        return wxString::FromAscii( buf );
+        // failed to get version string or unrecognized format
+        major =
+        minor = -1;

     }
     }

-    wxFAIL_MSG( _T("uname failed") );
-    return _T("");
+
+    if ( verMaj )
+        *verMaj = major;
+    if ( verMin )
+        *verMin = minor;
+
+    // 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);
+}
+
+wxString wxGetOsDescription()
+{
+    return wxGetCommandOutput(wxT("uname -s -r -m"));

 }
 
 #endif // !__WXMAC__
 }
 
 #endif // !__WXMAC__


@@ -900,16 +960,43 @@ wxMemorySize 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);
 
         return (wxMemorySize)memFree;
     }
         }
 
         fclose(fp);
 
         return (wxMemorySize)memFree;
     }

-#elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES)
-    return (wxMemorySize)(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
 


@@ -917,7 +1004,7 @@ wxMemorySize 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


@@ -932,19 +1019,19 @@ bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
     // 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
     // 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

-    wxLongLong blockSize = fs.f_frsize;
+    wxDiskspaceSize_t blockSize = fs.f_frsize;

 #else // HAVE_STATFS
 #else // HAVE_STATFS

-    wxLongLong blockSize = fs.f_bsize;
+    wxDiskspaceSize_t blockSize = fs.f_bsize;

 #endif // HAVE_STATVFS/HAVE_STATFS
 
     if ( pTotal )
     {
 #endif // HAVE_STATVFS/HAVE_STATFS
 
     if ( pTotal )
     {

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

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

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

     }
 
     return true;
     }
 
     return true;


@@ -957,10 +1044,39 @@ bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 // 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 )
         return false;
 
     if ( !p )
         return false;
 


@@ -972,13 +1088,22 @@ bool wxGetEnv(const wxString& var, wxString *value)
     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 )


@@ -987,16 +1112,37 @@ bool wxSetEnv(const wxString& variable, const wxChar *value)
     // transform to ANSI
     const wxWX2MBbuf p = s.mb_str();
 
     // transform to ANSI
     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 false;
 #endif
 }
 
     return putenv(buf) == 0;
 #else // no way to set an env var
     return false;
 #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
 // ----------------------------------------------------------------------------


@@ -1070,51 +1216,31 @@ bool wxHandleFatalExceptions(bool doit)
 
 #endif // wxUSE_ON_FATAL_EXCEPTION
 
 
 #endif // wxUSE_ON_FATAL_EXCEPTION
 

-// ----------------------------------------------------------------------------
-// error and debug output routines (deprecated, use wxLog)
-// ----------------------------------------------------------------------------
-
-#if WXWIN_COMPATIBILITY_2_2
-
-void wxDebugMsg( const char *format, ... )
-{
-  va_list ap;
-  va_start( ap, format );
-  vfprintf( stderr, format, ap );
-  fflush( stderr );
-  va_end(ap);
-}
-
-void wxError( const wxString &msg, const wxString &title )
-{
-  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") );
-}
-
-void wxFatalError( const wxString &msg, const wxString &title )
-{
-  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()
-}
-
-#endif // WXWIN_COMPATIBILITY_2_2
-

 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
 
 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
 

+#ifdef __DARWIN__
+    #include <sys/errno.h>
+#endif

 // ----------------------------------------------------------------------------
 // wxExecute support
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxExecute support
 // ----------------------------------------------------------------------------
 

-// Darwin doesn't use the same process end detection mechanisms so we don't
-// need wxExecute-related helpers for it
-#if !(defined(__DARWIN__) && defined(__WXMAC__))
+/*
+    NOTE: If this proves not to work well for wxMac then move back to the old
+    behavior.  If, however, it proves to work just fine, nuke all of the code
+    for the old behavior.  I strongly suggest backporting this to 2.8 as well.
+    However, beware that while you can nuke the old code here, you cannot
+    nuke the wxAddProcessCallbackForPid from the 2.8 branch (found in
+    utilsexc_cf since it's an exported symbol).
+ */
+// #define USE_OLD_DARWIN_END_PROCESS_DETECT (defined(__DARWIN__) && defined(__WXMAC__))
+#define USE_OLD_DARWIN_END_PROCESS_DETECT 0
+
+// wxMac/wxCocoa don't use the same process end detection mechanisms so we don't
+// need wxExecute-related helpers for them
+#if !USE_OLD_DARWIN_END_PROCESS_DETECT

 
 bool wxGUIAppTraits::CreateEndProcessPipe(wxExecuteData& execData)
 {
 
 bool wxGUIAppTraits::CreateEndProcessPipe(wxExecuteData& execData)
 {


@@ -1182,55 +1308,122 @@ int wxGUIAppTraits::WaitForChild(wxExecuteData& execData)
     }
 
 
     }
 
 

-#if defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
-    endProcData->tag = wxAddProcessCallbackForPid(endProcData, execData.pid);
+    if ( !(flags & wxEXEC_NOEVENTS) )
+    {
+#if USE_OLD_DARWIN_END_PROCESS_DETECT
+        endProcData->tag = wxAddProcessCallbackForPid(endProcData, execData.pid);

 #else
 #else

-    endProcData->tag = wxAddProcessCallback
-                (
-                    endProcData,
-                    execData.pipeEndProcDetect.Detach(wxPipe::Read)
-                );
-
-    execData.pipeEndProcDetect.Close();
-#endif // defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
+        endProcData->tag = wxAddProcessCallback
+                           (
+                             endProcData,
+                             execData.pipeEndProcDetect.Detach(wxPipe::Read)
+                           );
+
+        execData.pipeEndProcDetect.Close();
+#endif // USE_OLD_DARWIN_END_PROCESS_DETECT
+    }

 
     if ( flags & wxEXEC_SYNC )
     {
         wxBusyCursor bc;
 
     if ( flags & wxEXEC_SYNC )
     {
         wxBusyCursor bc;

-        wxWindowDisabler *wd = flags & wxEXEC_NODISABLE ? NULL
-                                                        : new wxWindowDisabler;
+        int exitcode = 0;

 
 

-        // endProcData->pid will be set to 0 from GTK_EndProcessDetector when the
-        // process terminates
-        while ( endProcData->pid != 0 )
-        {
-            bool idle = true;
+        wxWindowDisabler *wd = flags & (wxEXEC_NODISABLE | wxEXEC_NOEVENTS)
+                                    ? NULL
+                                    : new wxWindowDisabler;

 
 

-#if wxUSE_STREAMS
-            if ( execData.bufOut )
+        if ( flags & wxEXEC_NOEVENTS )
+        {
+            // just block waiting for the child to exit
+            int status = 0;
+
+            int result = waitpid(execData.pid, &status, 0);
+#ifdef __DARWIN__
+            /*  DE: waitpid manpage states that waitpid can fail with EINTR
+                if the call is interrupted by a caught signal.  I suppose
+                that means that this ought to be a while loop.
+
+                The odd thing is that it seems to fail EVERY time.  It fails
+                with a quickly exiting process (e.g. echo), and fails with a
+                slowly exiting process (e.g. sleep 2) but clearly after
+                having waited for the child to exit. Maybe it's a bug in
+                my particular version.
+
+                It works, however, from the CFSocket callback without this
+                trick but in that case it's used only after CFSocket calls
+                the callback and with the WNOHANG flag which would seem to
+                preclude it from being interrupted or at least make it much
+                less likely since it would not then be waiting.
+
+                If Darwin's man page is to be believed then this is definitely
+                necessary.  It's just weird that I've never seen it before
+                and apparently no one else has either or you'd think they'd
+                have reported it by now.  Perhaps blocking the GUI while
+                waiting for a child process to exit is simply not that common.
+             */
+            if(result == -1 && errno == EINTR)

             {
             {

-                execData.bufOut->Update();
-                idle = false;
+                result = waitpid(execData.pid, &status, 0);

             }
 
             }
 

-            if ( execData.bufErr )
+#endif
+
+            if ( result == -1 )

             {
             {

-                execData.bufErr->Update();
-                idle = false;
+                wxLogLastError(_T("waitpid"));
+                exitcode = -1;

             }
             }

-#endif // wxUSE_STREAMS
-
-            // don't consume 100% of the CPU while we're sitting in this
-            // loop
-            if ( idle )
-                wxMilliSleep(1);
+            else
+            {
+                wxASSERT_MSG( result == execData.pid,
+                              _T("unexpected waitpid() return value") );

 
 

-            // give GTK+ a chance to call GTK_EndProcessDetector here and
-            // also repaint the GUI
-            wxYield();
+                if ( WIFEXITED(status) )
+                {
+                    exitcode = WEXITSTATUS(status);
+                }
+                else // abnormal termination?
+                {
+                    wxASSERT_MSG( WIFSIGNALED(status),
+                                  _T("unexpected child wait status") );
+                    exitcode = -1;
+                }
+            }

         }
         }

+        else // !wxEXEC_NOEVENTS
+        {
+            // endProcData->pid will be set to 0 from GTK_EndProcessDetector when the
+            // process terminates
+            while ( endProcData->pid != 0 )
+            {
+                bool idle = true;

 
 

-        int exitcode = endProcData->exitcode;
+#if HAS_PIPE_INPUT_STREAM
+                if ( execData.bufOut )
+                {
+                    execData.bufOut->Update();
+                    idle = false;
+                }
+
+                if ( execData.bufErr )
+                {
+                    execData.bufErr->Update();
+                    idle = false;
+                }
+#endif // HAS_PIPE_INPUT_STREAM
+
+                // don't consume 100% of the CPU while we're sitting in this
+                // loop
+                if ( idle )
+                    wxMilliSleep(1);
+
+                // give GTK+ a chance to call GTK_EndProcessDetector here and
+                // also repaint the GUI
+                wxYield();
+            }
+
+            exitcode = endProcData->exitcode;
+        }

 
         delete wd;
         delete endProcData;
 
         delete wd;
         delete endProcData;