#include "wx/intl.h"
#include "wx/log.h"
+#include "wx/app.h"
#include "wx/utils.h"
#include "wx/process.h"
+#include "wx/thread.h"
-#include "wx/unix/execute.h"
+#include "wx/stream.h"
+
+#ifdef HAVE_STATFS
+ #include <sys/vfs.h>
+#endif // HAVE_STATFS
+
+#if wxUSE_GUI
+ #include "wx/unix/execute.h"
+#endif
+
+// SGI signal.h defines signal handler arguments differently depending on
+// whether _LANGUAGE_C_PLUS_PLUS is set or not - do set it
+#if defined(__SGI__) && !defined(_LANGUAGE_C_PLUS_PLUS)
+ #define _LANGUAGE_C_PLUS_PLUS 1
+#endif // SGI hack
#include <stdarg.h>
#include <dirent.h>
#include <signal.h>
#include <fcntl.h> // for O_WRONLY and friends
#include <time.h> // nanosleep() and/or usleep()
+#include <ctype.h> // isspace()
+#include <sys/time.h> // needed for FD_SETSIZE
#ifdef HAVE_UNAME
#include <sys/utsname.h> // for uname()
#if !defined(HAVE_USLEEP) && \
(defined(__SUN__) && !defined(__SunOs_5_6) && \
!defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \
- defined(__osf__)
+ defined(__osf__) || defined(__EMX__)
extern "C"
{
#ifdef __SUN__
int usleep(unsigned int usec);
#else // !Sun
- void usleep(unsigned long usec);
- #endif // Sun/!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 // Unices without usleep()
-
-// many versions of Unices have this function, but it is not defined in system
-// headers - please add your system here if it is the case for your OS.
-// SunOS (and Solaris) and DG-UX are like this.
-#if defined(__SOLARIS__) || defined(__osf__)
- extern "C"
- {
- pid_t wait4(pid_t pid, int *statusp, int options,
- struct rusage *rusage);
- }
- #define wxWait4(pid, stat, flags, rusage) wait4(pid, stat, flags, rusage)
-#elif defined(__sgi) || defined(__HPUX__)
- // no wait4() at all on these systems
- // TODO verify whether wait3() really works in this situation
- #define wxWait4(pid, stat, flags, rusage) wait3(stat, flags, rusage)
-#else
- // other Unices: assume have wait4(), although it's not standard (but
- // Linux and FreeBSD do have it)
- #define wxWait4(pid, stat, flags, rusage) wait4(pid, stat, flags, rusage)
-#endif // wait4()
+ #define HAVE_USLEEP 1
+#endif // Unices without usleep()
// ============================================================================
// implementation
{
#if defined(HAVE_NANOSLEEP)
timespec tmReq;
- tmReq.tv_sec = milliseconds / 1000;
+ tmReq.tv_sec = (time_t)(milliseconds / 1000);
tmReq.tv_nsec = (milliseconds % 1000) * 1000 * 1000;
// we're not interested in remaining time nor in return value
// of Solaris has a safe usleep() function but please notice that usleep()
// is known to lead to crashes in MT programs in Solaris 2.[67] and is not
// documented as MT-Safe
- #if defined(__SUN__) && defined(wxUSE_THREADS)
+ #if defined(__SUN__) && wxUSE_THREADS
#error "usleep() cannot be used in MT programs under Solaris."
#endif // Sun
usleep(milliseconds * 1000); // usleep(3) wants microseconds
+#elif defined(HAVE_SLEEP)
+ // under BeOS sleep() takes seconds (what about other platforms, if any?)
+ sleep(milliseconds * 1000);
#else // !sleep function
#error "usleep() or nanosleep() function required for wxUsleep"
#endif // sleep function
// process management
// ----------------------------------------------------------------------------
-int wxKill(long pid, int sig)
+int wxKill(long pid, wxSignal sig, wxKillError *rc)
{
- return kill(pid, sig);
+ int err = kill((pid_t)pid, (int)sig);
+ if ( rc )
+ {
+ switch ( err )
+ {
+ case 0:
+ *rc = wxKILL_OK;
+ break;
+
+ case EINVAL:
+ *rc = wxKILL_BAD_SIGNAL;
+ break;
+
+ case EPERM:
+ *rc = wxKILL_ACCESS_DENIED;
+ break;
+
+ case ESRCH:
+ *rc = wxKILL_NO_PROCESS;
+ break;
+
+ default:
+ // this goes against Unix98 docs so log it
+ wxLogDebug(_T("unexpected kill(2) return value %d"), err);
+
+ // something else...
+ *rc = wxKILL_ERROR;
+ }
+ }
+
+ return err;
}
+#define WXEXECUTE_NARGS 127
+
long wxExecute( const wxString& command, bool sync, wxProcess *process )
{
- static const char *IFS = " \t\n";
-
- wxCHECK_MSG( !command.IsEmpty(), 0, "can't exec empty command" );
+ wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") );
int argc = 0;
- char *argv[127];
- char *tmp = new char[command.Len() + 1];
- strcpy(tmp, command);
+ 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
+ {
+ argument=wxT("");
+ quotechar = wxT('\0');
+
+ // eat leading whitespace:
+ while ( wxIsspace(*cptr) )
+ cptr++;
+
+ if ( *cptr == wxT('\'') || *cptr == wxT('"') )
+ quotechar = *cptr++;
+
+ do
+ {
+ if ( *cptr == wxT('\\') && ! escaped )
+ {
+ escaped = TRUE;
+ cptr++;
+ continue;
+ }
+
+ // all other characters:
+ argument += *cptr++;
+ escaped = FALSE;
+
+ // 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") );
+
+ argv[argc] = new wxChar[argument.length() + 1];
+ wxStrcpy(argv[argc], argument.c_str());
+ argc++;
- argv[argc++] = strtok(tmp, IFS);
- while ((argv[argc++] = strtok((char *) NULL, IFS)) != NULL)
- /* loop */ ;
+ // if not at end of buffer, swallow last character:
+ if(*cptr)
+ cptr++;
+ break; // done with this one, start over
+ }
+ } while(*cptr);
+ } while(*cptr);
+ argv[argc] = NULL;
+
+ // do execute the command
long lRc = wxExecute(argv, sync, process);
- delete [] tmp;
+ // clean up
+ argc = 0;
+ while( argv[argc] )
+ delete [] argv[argc++];
return lRc;
}
-bool wxShell(const wxString& command)
+// ----------------------------------------------------------------------------
+// wxShell
+// ----------------------------------------------------------------------------
+
+static wxString wxMakeShellCommand(const wxString& command)
{
wxString cmd;
- if ( !!command )
- cmd.Printf("xterm -e %s", command.c_str());
+ if ( !command )
+ {
+ // just an interactive shell
+ cmd = _T("xterm");
+ }
else
- cmd = command;
+ {
+ // execute command in a shell
+ cmd << _T("/bin/sh -c '") << command << _T('\'');
+ }
- return wxExecute(cmd) != 0;
+ return cmd;
}
+bool wxShell(const wxString& command)
+{
+ return wxExecute(wxMakeShellCommand(command), TRUE /* sync */) == 0;
+}
+
+bool wxShell(const wxString& command, wxArrayString& output)
+{
+ wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") );
+
+ return wxExecute(wxMakeShellCommand(command), output);
+}
+
+#if wxUSE_GUI
+
void wxHandleProcessTermination(wxEndProcessData *proc_data)
{
int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
+ // waitpid is POSIX so should be available everywhere, however on older
+ // systems wait() might be used instead in a loop (until the right pid
+ // terminates)
int status = 0;
- wxWait4(pid, &status, 0, (rusage *) NULL);
+ int rc;
+
+ // wait for child termination and if waitpid() was interrupted, try again
+ do
+ {
+ rc = waitpid(pid, &status, 0);
+ }
+ while ( rc == -1 && errno == EINTR );
+
+ if (rc == -1)
+ {
+ // JACS: this could happen if the process was terminated and waitpid called,
+ // so commenting out for now.
+ //wxLogSysError(_("Waiting for subprocess termination failed (return code = -1)"));
+ }
+ else if (! (WIFEXITED(status)))
+ {
+ wxLogSysError(_("Waiting for subprocess termination failed (WIFEXITED returned zero)"));
+
+ /* AFAIK, this can only happen if something went wrong within
+ wxGTK, i.e. due to a race condition or some serious bug.
+ After having fixed the order of statements in
+ GTK_EndProcessDetector(). (KB)
+ */
+ }
+ else if (WIFSIGNALED(status))
+ {
+ wxLogSysError(_("Waiting for subprocess termination failed (signal not caught)"));
+
+ /* AFAIK, this can only happen if something went wrong within
+ wxGTK, i.e. due to a race condition or some serious bug.
+ After having fixed the order of statements in
+ GTK_EndProcessDetector(). (KB)
+ */
+ }
+ // else
+ {
+ // notify user about termination if required
+ if (proc_data->process)
+ {
+ proc_data->process->OnTerminate(proc_data->pid,
+ WEXITSTATUS(status));
+ }
+ // clean up
+ if ( proc_data->pid > 0 )
+ {
+ delete proc_data;
+ }
+ else
+ {
+ // wxExecute() will know about it
+ proc_data->exitcode = status;
+
+ proc_data->pid = 0;
+ }
+ }
+}
+
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// wxStream classes to support IO redirection in wxExecute
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STREAMS
+
+class wxProcessFileInputStream : public wxInputStream
+{
+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
+{
+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;
- if (proc_data->process)
- proc_data->process->OnTerminate(proc_data->pid, status);
+ // check if there is any input available
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
- if (proc_data->pid > 0)
+ fd_set readfds;
+ FD_ZERO(&readfds);
+ FD_SET(m_fd, &readfds);
+ switch ( select(m_fd + 1, &readfds, NULL, NULL, &tv) )
+ {
+ case -1:
+ wxLogSysError(_("Impossible to get child process input"));
+ // fall through
+
+ case 0:
+ return TRUE;
+
+ default:
+ wxFAIL_MSG(_T("unexpected select() return value"));
+ // still fall through
+
+ case 1:
+ // input available: check if there is any
+ return wxInputStream::Eof();
+ }
+}
+
+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 )
{
- delete proc_data;
+ m_lasterror = wxSTREAM_READ_ERROR;
+ ret = 0;
}
else
{
- // wxExecute() will know about it
- proc_data->exitcode = status;
+ m_lasterror = wxSTREAM_NOERROR;
+ }
+
+ return ret;
+}
- proc_data->pid = 0;
+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
+ {
+ m_lasterror = wxSTREAM_NOERROR;
+ }
+
+ return ret;
}
-long wxExecute( char **argv, bool sync, wxProcess *process )
+// ----------------------------------------------------------------------------
+// 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
{
- wxCHECK_MSG( *argv, 0, "can't exec empty command" );
+public:
+ wxStreamTempBuffer();
- int end_proc_detect[2];
+ // 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();
+
+ ~wxStreamTempBuffer();
+
+private:
+ // the stream we're buffering, if NULL we don't do anything at all
+ wxInputStream *m_stream;
+
+ // the buffer of size m_size (NULL if m_size == 0)
+ void *m_buffer;
+
+ // the size of the buffer
+ size_t m_size;
+};
+
+wxStreamTempBuffer::wxStreamTempBuffer()
+{
+ m_stream = NULL;
+ m_buffer = NULL;
+ m_size = 0;
+}
+
+void wxStreamTempBuffer::Init(wxInputStream *stream)
+{
+ m_stream = stream;
+}
+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;
+ }
+ }
+}
+
+wxStreamTempBuffer::~wxStreamTempBuffer()
+{
+ if ( m_buffer )
+ {
+ m_stream->Ungetch(m_buffer, m_size);
+ free(m_buffer);
+ }
+}
+
+#endif // wxUSE_STREAMS
+
+long wxExecute(wxChar **argv,
+ bool sync,
+ 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
+ //
+ // we define this as a macro, not a variable, to avoid compiler warnings
+ // about "ERROR_RETURN_CODE value may be clobbered by fork()"
+ #define ERROR_RETURN_CODE ((sync) ? -1 : 0)
+
+ 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])
+ {
+ wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
+ mb_argv[mb_argc] = strdup(mb_arg);
+ mb_argc++;
+ }
+ mb_argv[mb_argc] = (char *) NULL;
+
+ // 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
+
+#if wxUSE_GUI
// create pipes
- if (pipe(end_proc_detect) == -1)
+ int end_proc_detect[2];
+ if ( pipe(end_proc_detect) == -1 )
{
wxLogSysError( _("Pipe creation failed") );
- return 0;
+ wxLogError( _("Failed to execute '%s'\n"), *argv );
+
+ ARGS_CLEANUP;
+
+ return ERROR_RETURN_CODE;
+ }
+#endif // wxUSE_GUI
+
+ // 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;
+
+ if ( process && process->IsRedirected() )
+ {
+ if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 || pipe(pipeErr) == -1 )
+ {
+#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 );
+
+ ARGS_CLEANUP;
+
+ return ERROR_RETURN_CODE;
+ }
}
// fork the process
#else
pid_t pid = fork();
#endif
- if (pid == -1)
+
+ 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") );
- return 0;
+
+ ARGS_CLEANUP;
+
+ return ERROR_RETURN_CODE;
}
- else if (pid == 0)
+ else if ( pid == 0 ) // we're in child
{
- // we're in child
+#if wxUSE_GUI
close(end_proc_detect[0]); // close reading side
+#endif // wxUSE_GUI
- // These three lines close the open file descriptors to to avoid any
+ // 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 (sync == 0)
+ // one wants proper IO for the subprocess, the right thing to do is to
+ // start an xterm executing it.
+ if ( !sync )
{
- // leave stderr opened, it won't do any hurm
for ( int fd = 0; fd < FD_SETSIZE; fd++ )
{
- if ( fd != end_proc_detect[1] && fd != STDERR_FILENO )
+ 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);
}
}
-#if 0
- close(STDERR_FILENO);
+ // redirect stdio, stdout and stderr
+ if ( pipeIn[0] != -1 )
+ {
+ if ( dup2(pipeIn[0], STDIN_FILENO) == -1 ||
+ dup2(pipeOut[1], STDOUT_FILENO) == -1 ||
+ dup2(pipeErr[1], STDERR_FILENO) == -1 )
+ {
+ wxLogSysError(_("Failed to redirect child process input/output"));
+ }
- // some programs complain about stderr not being open, so redirect
- // them:
- open("/dev/null", O_RDONLY); // stdin
- open("/dev/null", O_WRONLY); // stdout
- open("/dev/null", O_WRONLY); // stderr
-#endif
+ close(pipeIn[0]);
+ close(pipeOut[1]);
+ close(pipeErr[1]);
+ }
-#ifdef _AIX
- execvp ((const char *)*argv, (const char **)argv);
-#else
- execvp (*argv, argv);
-#endif
+ execvp (*mb_argv, mb_argv);
// there is no return after successful exec()
- fprintf(stderr, _("Can't execute '%s'\n"), *argv);
-
_exit(-1);
+
+ // 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?
+#if defined(__VMS) || defined(__INTEL_COMPILER)
+ return 0;
+#endif
}
- else
+ else // we're in parent
{
- // we're in parent
- close(end_proc_detect[1]); // close writing side
+ 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]);
+
+ process->SetPipeStreams(inStream, outStream, errStream);
+
+ bufIn.Init(inStream);
+ bufErr.Init(inStream);
+#endif // wxUSE_STREAMS
+
+ 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;
- data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
if ( sync )
{
- wxASSERT_MSG( !process, "wxProcess param ignored for sync exec" );
+ // 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;
// sync execution: indicate it by negating the pid
data->pid = -pid;
+ data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
- // it will be set to 0 from GTK_EndProcessDetector
- while (data->pid != 0)
+ close(end_proc_detect[1]); // close writing side
+
+ wxBusyCursor bc;
+ wxWindowDisabler wd;
+
+ // 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();
+ }
int exitcode = data->exitcode;
return exitcode;
}
- else
+ else // async execution
{
// async execution, nothing special to do - caller will be
- // notified about the process terminationif process != NULL, data
+ // notified about the process termination if process != NULL, data
// will be deleted in GTK_EndProcessDetector
- data->process = process;
- data->pid = pid;
+ data->process = process;
+ data->pid = pid;
+ data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
+
+ close(end_proc_detect[1]); // close writing side
return pid;
}
+#else // !wxUSE_GUI
+ wxASSERT_MSG( sync, wxT("async execution not supported yet") );
+
+ int exitcode = 0;
+ if ( waitpid(pid, &exitcode, 0) == -1 || !WIFEXITED(exitcode) )
+ {
+ wxLogSysError(_("Waiting for subprocess termination failed"));
+ }
+
+ return exitcode;
+#endif // wxUSE_GUI
}
}
+#undef ERROR_RETURN_CODE
+#undef ARGS_CLEANUP
+
// ----------------------------------------------------------------------------
// file and directory functions
// ----------------------------------------------------------------------------
-const char* wxGetHomeDir( wxString *home )
+const wxChar* wxGetHomeDir( wxString *home )
{
*home = wxGetUserHome( wxString() );
+ wxString tmp;
if ( home->IsEmpty() )
- *home = "/";
-
+ *home = wxT("/");
+#ifdef __VMS
+ tmp = *home;
+ if ( tmp.Last() != wxT(']'))
+ if ( tmp.Last() != wxT('/')) *home << wxT('/');
+#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
{
struct passwd *who = (struct passwd *) NULL;
- if (user.IsNull() || (user== ""))
+ if ( !user )
{
- register char *ptr;
+ wxChar *ptr;
- if ((ptr = getenv("HOME")) != NULL)
+ if ((ptr = wxGetenv(wxT("HOME"))) != NULL)
{
return ptr;
}
- if ((ptr = getenv("USER")) != NULL || (ptr = getenv("LOGNAME")) != NULL)
+ if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)
{
- who = getpwnam(ptr);
+ who = getpwnam(wxConvertWX2MB(ptr));
}
// We now make sure the the user exists!
}
else
{
- who = getpwnam (user);
+ who = getpwnam (user.mb_str());
}
- return who ? who->pw_dir : (char*)NULL;
+ return wxConvertMB2WX(who ? who->pw_dir : 0);
}
// ----------------------------------------------------------------------------
-// id routines
+// network and user id routines
// ----------------------------------------------------------------------------
-bool wxGetHostName(char *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, "NULL pointer in wxGetHostName" );
+ wxCHECK_MSG( buf, FALSE, wxT("NULL pointer in wxGetHostNameInternal") );
- *buf = '\0';
+ *buf = wxT('\0');
// we're using uname() which is POSIX instead of less standard sysinfo()
#if defined(HAVE_UNAME)
bool ok = uname(&uts) != -1;
if ( ok )
{
- strncpy(buf, uts.nodename, sz - 1);
- buf[sz] = '\0';
+ wxStrncpy(buf, wxConvertMB2WX(uts.nodename), sz - 1);
+ buf[sz] = wxT('\0');
}
#elif defined(HAVE_GETHOSTNAME)
bool ok = gethostname(buf, sz) != -1;
-#else
- wxFAIL_MSG("don't know host name for this machibe");
+#else // no uname, no gethostname
+ wxFAIL_MSG(wxT("don't know host name for this machine"));
bool ok = FALSE;
-#endif
+#endif // uname/gethostname
if ( !ok )
{
return ok;
}
-bool wxGetUserId(char *buf, int sz)
+bool wxGetHostName(wxChar *buf, int sz)
+{
+ bool ok = wxGetHostNameInternal(buf, sz);
+
+ if ( ok )
+ {
+ // BSD systems return the FQDN, we only want the hostname, so extract
+ // it (we consider that dots are domain separators)
+ wxChar *dot = wxStrchr(buf, wxT('.'));
+ if ( dot )
+ {
+ // nuke it
+ *dot = wxT('\0');
+ }
+ }
+
+ return ok;
+}
+
+bool wxGetFullHostName(wxChar *buf, int sz)
+{
+ bool ok = wxGetHostNameInternal(buf, sz);
+
+ if ( ok )
+ {
+ if ( !wxStrchr(buf, wxT('.')) )
+ {
+ struct hostent *host = gethostbyname(wxConvertWX2MB(buf));
+ if ( !host )
+ {
+ wxLogSysError(_("Cannot get the official hostname"));
+
+ ok = FALSE;
+ }
+ else
+ {
+ // the canonical name
+ wxStrncpy(buf, wxConvertMB2WX(host->h_name), sz);
+ }
+ }
+ //else: it's already a FQDN (BSD behaves this way)
+ }
+
+ return ok;
+}
+
+bool wxGetUserId(wxChar *buf, int sz)
{
struct passwd *who;
- *buf = '\0';
+ *buf = wxT('\0');
if ((who = getpwuid(getuid ())) != NULL)
{
- strncpy (buf, who->pw_name, sz - 1);
+ wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1);
return TRUE;
}
return FALSE;
}
-bool wxGetUserName(char *buf, int sz)
+bool wxGetUserName(wxChar *buf, int sz)
{
struct passwd *who;
- char *comma;
- *buf = '\0';
- if ((who = getpwuid (getuid ())) != NULL) {
- comma = strchr(who->pw_gecos, ',');
+ *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
- strncpy (buf, who->pw_gecos, sz - 1);
+ 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
return TRUE;
}
return FALSE;
}
+wxString wxGetOsDescription()
+{
+#ifndef WXWIN_OS_DESCRIPTION
+ #error WXWIN_OS_DESCRIPTION should be defined in config.h by configure
+#else
+ return WXWIN_OS_DESCRIPTION;
+#endif
+}
+
+// this function returns the GUI toolkit version in GUI programs, but OS
+// version in non-GUI ones
+#if !wxUSE_GUI
+
+int wxGetOsVersion(int *majorVsn, int *minorVsn)
+{
+ int major, minor;
+ char name[256];
+
+ if ( sscanf(WXWIN_OS_DESCRIPTION, "%s %d.%d", name, &major, &minor) != 3 )
+ {
+ // unreckognized uname string format
+ major = minor = -1;
+ }
+
+ if ( majorVsn )
+ *majorVsn = major;
+ if ( minorVsn )
+ *minorVsn = minor;
+
+ return wxUNIX;
+}
+
+#endif // !wxUSE_GUI
+
+long wxGetFreeMemory()
+{
+#if defined(__LINUX__)
+ // get it from /proc/meminfo
+ FILE *fp = fopen("/proc/meminfo", "r");
+ if ( fp )
+ {
+ long memFree = -1;
+
+ 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);
+ }
+
+ fclose(fp);
+
+ return memFree;
+ }
+#elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES)
+ return sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE);
+//#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably
+#endif
+
+ // can't find it out
+ return -1;
+}
+
+bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
+{
+#ifdef HAVE_STATFS
+
+ struct statfs fs;
+ if ( statfs(path, &fs) != 0 )
+ {
+ wxLogSysError("Failed to get file system statistics");
+
+ return FALSE;
+ }
+
+ if ( pTotal )
+ {
+ *pTotal = wxLongLong(fs.f_blocks) * fs.f_bsize;
+ }
+
+ if ( pFree )
+ {
+ *pFree = wxLongLong(fs.f_bavail) * fs.f_bsize;
+ }
+
+ return TRUE;
+#endif // HAVE_STATFS
+
+ return FALSE;
+}
+
+// ----------------------------------------------------------------------------
+// env vars
+// ----------------------------------------------------------------------------
+
+bool wxGetEnv(const wxString& var, wxString *value)
+{
+ // wxGetenv is defined as getenv()
+ wxChar *p = wxGetenv(var);
+ if ( !p )
+ return FALSE;
+
+ if ( value )
+ {
+ *value = p;
+ }
+
+ return TRUE;
+}
+
+bool wxSetEnv(const wxString& variable, const wxChar *value)
+{
+#if defined(HAVE_SETENV)
+ return setenv(variable.mb_str(), value ? wxString(value).mb_str().data()
+ : NULL, 1 /* overwrite */) == 0;
+#elif defined(HAVE_PUTENV)
+ wxString s = variable;
+ if ( value )
+ s << _T('=') << value;
+
+ // transform to ANSI
+ const char *p = s.mb_str();
+
+ // the string will be free()d by libc
+ char *buf = (char *)malloc(strlen(p) + 1);
+ strcpy(buf, p);
+
+ return putenv(buf) == 0;
+#else // no way to set an env var
+ return FALSE;
+#endif
+}
+
+// ----------------------------------------------------------------------------
+// signal handling
+// ----------------------------------------------------------------------------
+
+#if wxUSE_ON_FATAL_EXCEPTION
+
+#include <signal.h>
+
+static void wxFatalSignalHandler(wxTYPE_SA_HANDLER)
+{
+ if ( wxTheApp )
+ {
+ // give the user a chance to do something special about this
+ wxTheApp->OnFatalException();
+ }
+
+ abort();
+}
+
+bool wxHandleFatalExceptions(bool doit)
+{
+ // old sig handlers
+ static bool s_savedHandlers = FALSE;
+ static struct sigaction s_handlerFPE,
+ s_handlerILL,
+ s_handlerBUS,
+ s_handlerSEGV;
+
+ bool ok = TRUE;
+ if ( doit && !s_savedHandlers )
+ {
+ // install the signal handler
+ struct sigaction act;
+
+ // some systems extend it with non std fields, so zero everything
+ memset(&act, 0, sizeof(act));
+
+ act.sa_handler = wxFatalSignalHandler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+
+ ok &= sigaction(SIGFPE, &act, &s_handlerFPE) == 0;
+ ok &= sigaction(SIGILL, &act, &s_handlerILL) == 0;
+ ok &= sigaction(SIGBUS, &act, &s_handlerBUS) == 0;
+ ok &= sigaction(SIGSEGV, &act, &s_handlerSEGV) == 0;
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to install our signal handler."));
+ }
+
+ s_savedHandlers = TRUE;
+ }
+ else if ( s_savedHandlers )
+ {
+ // uninstall the signal handler
+ ok &= sigaction(SIGFPE, &s_handlerFPE, NULL) == 0;
+ ok &= sigaction(SIGILL, &s_handlerILL, NULL) == 0;
+ ok &= sigaction(SIGBUS, &s_handlerBUS, NULL) == 0;
+ ok &= sigaction(SIGSEGV, &s_handlerSEGV, NULL) == 0;
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to uninstall our signal handler."));
+ }
+
+ s_savedHandlers = FALSE;
+ }
+ //else: nothing to do
+
+ return ok;
+}
+
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
// ----------------------------------------------------------------------------
// error and debug output routines (deprecated, use wxLog)
// ----------------------------------------------------------------------------
void wxError( const wxString &msg, const wxString &title )
{
- fprintf( stderr, _("Error ") );
- if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
- if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
- fprintf( stderr, ".\n" );
+ 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 )
{
- fprintf( stderr, _("Error ") );
- if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
- if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
- fprintf( stderr, ".\n" );
+ 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()
}
-//------------------------------------------------------------------------
-// directory routines
-//------------------------------------------------------------------------
-
-bool wxDirExists( const wxString& dir )
-{
- char buf[500];
- strcpy( buf, WXSTRINGCAST(dir) );
- struct stat sbuf;
- return ((stat(buf, &sbuf) != -1) && S_ISDIR(sbuf.st_mode) ? TRUE : FALSE);
-}
projects / wxWidgets.git / blobdiff