2c8e47380e
and also added a version which captures the programs output 2. fix for compilers which have void ftime() (my mingw does) in timercmn.cpp 3. updated console sample to test wxShell/wxExecute 4. treetest now can toggle images or change their size 5. wxTreeCtrl doesn't crash if it has no image list git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6404 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
818 lines
22 KiB
C++
818 lines
22 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: utilsunx.cpp
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// Purpose: generic Unix implementation of many wx functions
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// Author: Vadim Zeitlin
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// Id: $Id$
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// Copyright: (c) 1998 Robert Roebling, Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/defs.h"
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#include "wx/string.h"
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#include "wx/intl.h"
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#include "wx/log.h"
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#include "wx/utils.h"
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#include "wx/process.h"
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#include "wx/thread.h"
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#include "wx/stream.h"
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#if wxUSE_GUI
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#include "wx/unix/execute.h"
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#endif
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#include <stdarg.h>
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#include <dirent.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <pwd.h>
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#include <errno.h>
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#include <netdb.h>
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#include <signal.h>
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#include <fcntl.h> // for O_WRONLY and friends
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#include <time.h> // nanosleep() and/or usleep()
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#include <ctype.h> // isspace()
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#include <sys/time.h> // needed for FD_SETSIZE
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#ifdef HAVE_UNAME
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#include <sys/utsname.h> // for uname()
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#endif // HAVE_UNAME
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// ----------------------------------------------------------------------------
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// conditional compilation
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// ----------------------------------------------------------------------------
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// many versions of Unices have this function, but it is not defined in system
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// headers - please add your system here if it is the case for your OS.
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// SunOS < 5.6 (i.e. Solaris < 2.6) and DG-UX are like this.
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#if !defined(HAVE_USLEEP) && \
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(defined(__SUN__) && !defined(__SunOs_5_6) && \
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!defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \
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defined(__osf__) || defined(__EMX__)
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extern "C"
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{
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#ifdef __SUN__
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int usleep(unsigned int usec);
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#else // !Sun
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#ifdef __EMX__
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/* I copied this from the XFree86 diffs. AV. */
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#define INCL_DOSPROCESS
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#include <os2.h>
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inline void usleep(unsigned long delay)
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{
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DosSleep(delay ? (delay/1000l) : 1l);
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}
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#else // !Sun && !EMX
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void usleep(unsigned long usec);
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#endif
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#endif // Sun/EMX/Something else
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};
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#define HAVE_USLEEP 1
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#endif // Unices without usleep()
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// sleeping
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// ----------------------------------------------------------------------------
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void wxSleep(int nSecs)
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{
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sleep(nSecs);
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}
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void wxUsleep(unsigned long milliseconds)
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{
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#if defined(HAVE_NANOSLEEP)
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timespec tmReq;
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tmReq.tv_sec = (time_t)(milliseconds / 1000);
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tmReq.tv_nsec = (milliseconds % 1000) * 1000 * 1000;
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// we're not interested in remaining time nor in return value
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(void)nanosleep(&tmReq, (timespec *)NULL);
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#elif defined(HAVE_USLEEP)
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// uncomment this if you feel brave or if you are sure that your version
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// of Solaris has a safe usleep() function but please notice that usleep()
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// is known to lead to crashes in MT programs in Solaris 2.[67] and is not
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// documented as MT-Safe
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#if defined(__SUN__) && wxUSE_THREADS
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#error "usleep() cannot be used in MT programs under Solaris."
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#endif // Sun
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usleep(milliseconds * 1000); // usleep(3) wants microseconds
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#elif defined(HAVE_SLEEP)
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// under BeOS sleep() takes seconds (what about other platforms, if any?)
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sleep(milliseconds * 1000);
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#else // !sleep function
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#error "usleep() or nanosleep() function required for wxUsleep"
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#endif // sleep function
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}
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// ----------------------------------------------------------------------------
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// process management
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// ----------------------------------------------------------------------------
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int wxKill(long pid, wxSignal sig)
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{
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return kill((pid_t)pid, (int)sig);
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}
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#define WXEXECUTE_NARGS 127
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long wxExecute( const wxString& command, bool sync, wxProcess *process )
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{
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wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") );
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int argc = 0;
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wxChar *argv[WXEXECUTE_NARGS];
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wxString argument;
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const wxChar *cptr = command.c_str();
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wxChar quotechar = wxT('\0'); // is arg quoted?
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bool escaped = FALSE;
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// split the command line in arguments
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do
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{
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argument=wxT("");
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quotechar = wxT('\0');
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// eat leading whitespace:
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while ( wxIsspace(*cptr) )
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cptr++;
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if ( *cptr == wxT('\'') || *cptr == wxT('"') )
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quotechar = *cptr++;
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do
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{
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if ( *cptr == wxT('\\') && ! escaped )
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{
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escaped = TRUE;
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cptr++;
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continue;
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}
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// all other characters:
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argument += *cptr++;
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escaped = FALSE;
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// have we reached the end of the argument?
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if ( (*cptr == quotechar && ! escaped)
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|| (quotechar == wxT('\0') && wxIsspace(*cptr))
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|| *cptr == wxT('\0') )
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{
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wxASSERT_MSG( argc < WXEXECUTE_NARGS,
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wxT("too many arguments in wxExecute") );
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argv[argc] = new wxChar[argument.length() + 1];
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wxStrcpy(argv[argc], argument.c_str());
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argc++;
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// if not at end of buffer, swallow last character:
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if(*cptr)
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cptr++;
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break; // done with this one, start over
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}
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} while(*cptr);
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} while(*cptr);
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argv[argc] = NULL;
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// do execute the command
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long lRc = wxExecute(argv, sync, process);
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// clean up
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argc = 0;
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while( argv[argc] )
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delete [] argv[argc++];
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return lRc;
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}
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// ----------------------------------------------------------------------------
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// wxShell
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// ----------------------------------------------------------------------------
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static wxString wxMakeShellCommand(const wxString& command)
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{
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wxString cmd;
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if ( !command )
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{
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// just an interactive shell
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cmd = _T("xterm");
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}
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else
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{
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// execute command in a shell
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cmd << _T("/bin/sh -c '") << command << _T('\'');
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}
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return cmd;
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}
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bool wxShell(const wxString& command)
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{
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return wxExecute(wxMakeShellCommand(command), TRUE /* sync */) == 0;
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}
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bool wxShell(const wxString& command, wxArrayString& output)
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{
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wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") );
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return wxExecute(wxMakeShellCommand(command), output);
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}
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#if wxUSE_GUI
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void wxHandleProcessTermination(wxEndProcessData *proc_data)
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{
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int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
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// waitpid is POSIX so should be available everywhere, however on older
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// systems wait() might be used instead in a loop (until the right pid
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// terminates)
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int status = 0;
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int rc;
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// wait for child termination and if waitpid() was interrupted, try again
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do
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{
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rc = waitpid(pid, &status, 0);
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}
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while ( rc == -1 && errno == EINTR );
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if( rc == -1 || ! (WIFEXITED(status) || WIFSIGNALED(status)) )
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{
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wxLogSysError(_("Waiting for subprocess termination failed"));
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/* AFAIK, this can only happen if something went wrong within
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wxGTK, i.e. due to a race condition or some serious bug.
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After having fixed the order of statements in
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GTK_EndProcessDetector(). (KB)
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*/
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}
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else
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{
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// notify user about termination if required
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if (proc_data->process)
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{
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proc_data->process->OnTerminate(proc_data->pid,
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WEXITSTATUS(status));
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}
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// clean up
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if ( proc_data->pid > 0 )
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{
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delete proc_data;
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}
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else
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{
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// wxExecute() will know about it
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proc_data->exitcode = status;
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proc_data->pid = 0;
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}
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}
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}
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#endif // wxUSE_GUI
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// ----------------------------------------------------------------------------
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// wxStream classes to support IO redirection in wxExecute
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// ----------------------------------------------------------------------------
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class wxProcessFileInputStream : public wxInputStream
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{
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public:
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wxProcessFileInputStream(int fd) { m_fd = fd; }
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~wxProcessFileInputStream() { close(m_fd); }
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virtual bool Eof() const;
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protected:
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size_t OnSysRead(void *buffer, size_t bufsize);
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protected:
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int m_fd;
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};
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class wxProcessFileOutputStream : public wxOutputStream
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{
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public:
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wxProcessFileOutputStream(int fd) { m_fd = fd; }
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~wxProcessFileOutputStream() { close(m_fd); }
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protected:
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size_t OnSysWrite(const void *buffer, size_t bufsize);
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protected:
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int m_fd;
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};
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bool wxProcessFileInputStream::Eof() const
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{
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if ( m_lasterror == wxSTREAM_EOF )
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return TRUE;
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// check if there is any input available
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struct timeval tv;
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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fd_set readfds;
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FD_ZERO(&readfds);
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FD_SET(m_fd, &readfds);
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switch ( select(m_fd + 1, &readfds, NULL, NULL, &tv) )
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{
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case -1:
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wxLogSysError(_("Impossible to get child process input"));
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// fall through
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case 0:
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return TRUE;
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default:
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wxFAIL_MSG(_T("unexpected select() return value"));
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// still fall through
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case 1:
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// input available: check if there is any
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return wxInputStream::Eof();
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}
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}
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size_t wxProcessFileInputStream::OnSysRead(void *buffer, size_t bufsize)
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{
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int ret = read(m_fd, buffer, bufsize);
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if ( ret == 0 )
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{
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m_lasterror = wxSTREAM_EOF;
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}
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else if ( ret == -1 )
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{
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m_lasterror = wxSTREAM_READ_ERROR;
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ret = 0;
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}
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else
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{
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m_lasterror = wxSTREAM_NOERROR;
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}
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return ret;
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}
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size_t wxProcessFileOutputStream::OnSysWrite(const void *buffer, size_t bufsize)
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{
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int ret = write(m_fd, buffer, bufsize);
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if ( ret == -1 )
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{
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m_lasterror = wxSTREAM_WRITE_ERROR;
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ret = 0;
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}
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else
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{
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m_lasterror = wxSTREAM_NOERROR;
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}
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return ret;
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}
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long wxExecute(wxChar **argv,
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bool sync,
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wxProcess *process)
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{
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wxCHECK_MSG( *argv, 0, wxT("can't exec empty command") );
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#if wxUSE_UNICODE
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int mb_argc = 0;
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char *mb_argv[WXEXECUTE_NARGS];
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while (argv[mb_argc])
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{
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wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
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mb_argv[mb_argc] = strdup(mb_arg);
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mb_argc++;
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}
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mb_argv[mb_argc] = (char *) NULL;
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// this macro will free memory we used above
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#define ARGS_CLEANUP \
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for ( mb_argc = 0; mb_argv[mb_argc]; mb_argc++ ) \
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free(mb_argv[mb_argc])
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#else // ANSI
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// no need for cleanup
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#define ARGS_CLEANUP
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wxChar **mb_argv = argv;
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#endif // Unicode/ANSI
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#if wxUSE_GUI
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// create pipes
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int end_proc_detect[2];
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if ( pipe(end_proc_detect) == -1 )
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{
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wxLogSysError( _("Pipe creation failed") );
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wxLogError( _("Failed to execute '%s'\n"), *argv );
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ARGS_CLEANUP;
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return 0;
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}
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#endif // wxUSE_GUI
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int pipeIn[2];
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int pipeOut[2];
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pipeIn[0] = pipeIn[1] =
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pipeOut[0] = pipeOut[1] = -1;
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if ( process && process->IsRedirected() )
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{
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if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 )
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{
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#if wxUSE_GUI
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// free previously allocated resources
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close(end_proc_detect[0]);
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close(end_proc_detect[1]);
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#endif // wxUSE_GUI
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wxLogSysError( _("Pipe creation failed") );
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wxLogError( _("Failed to execute '%s'\n"), *argv );
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ARGS_CLEANUP;
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return 0;
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}
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}
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// fork the process
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#ifdef HAVE_VFORK
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pid_t pid = vfork();
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#else
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pid_t pid = fork();
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#endif
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if ( pid == -1 ) // error?
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{
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#if wxUSE_GUI
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close(end_proc_detect[0]);
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close(end_proc_detect[1]);
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close(pipeIn[0]);
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close(pipeIn[1]);
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close(pipeOut[0]);
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close(pipeOut[1]);
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#endif // wxUSE_GUI
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wxLogSysError( _("Fork failed") );
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ARGS_CLEANUP;
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return 0;
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}
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else if ( pid == 0 ) // we're in child
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{
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#if wxUSE_GUI
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close(end_proc_detect[0]); // close reading side
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#endif // wxUSE_GUI
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// These lines close the open file descriptors to to avoid any
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// input/output which might block the process or irritate the user. If
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// one wants proper IO for the subprocess, the right thing to do is to
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// start an xterm executing it.
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if ( !sync )
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{
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for ( int fd = 0; fd < FD_SETSIZE; fd++ )
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{
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if ( fd == pipeIn[0] || fd == pipeOut[1]
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#if wxUSE_GUI
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|| fd == end_proc_detect[1]
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#endif // wxUSE_GUI
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)
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{
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// don't close this one, we still need it
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continue;
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}
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// leave stderr opened too, it won't do any hurm
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if ( fd != STDERR_FILENO )
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close(fd);
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}
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}
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// redirect stdio and stdout
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// (TODO: what about stderr?)
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if ( pipeIn[0] != -1 )
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{
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if ( dup2(pipeIn[0], STDIN_FILENO) == -1 ||
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dup2(pipeOut[1], STDOUT_FILENO) == -1 )
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{
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wxLogSysError(_("Failed to redirect child process "
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"input/output"));
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}
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close(pipeIn[0]);
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close(pipeOut[1]);
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}
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execvp (*mb_argv, mb_argv);
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// there is no return after successful exec()
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_exit(-1);
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}
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else // we're in parent
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{
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ARGS_CLEANUP;
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// pipe initialization: construction of the wxStreams
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if ( process && process->IsRedirected() )
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{
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// These two streams are relative to this process.
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wxOutputStream *outStream = new wxProcessFileOutputStream(pipeIn[1]);
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wxInputStream *inStream = new wxProcessFileInputStream(pipeOut[0]);
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close(pipeIn[0]); // close reading side
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close(pipeOut[1]); // close writing side
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process->SetPipeStreams(inStream, outStream);
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}
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#if wxUSE_GUI
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wxEndProcessData *data = new wxEndProcessData;
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if ( sync )
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{
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// we may have process for capturing the program output, but it's
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// not used in wxEndProcessData in the case of sync execution
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data->process = NULL;
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// sync execution: indicate it by negating the pid
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data->pid = -pid;
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data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
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close(end_proc_detect[1]); // close writing side
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wxBusyCursor bc;
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wxWindowDisabler wd;
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// it will be set to 0 from GTK_EndProcessDetector
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while (data->pid != 0)
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wxYield();
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int exitcode = data->exitcode;
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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;
|
|
}
|
|
#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
|
|
}
|
|
|
|
return 0;
|
|
|
|
#undef ARGS_CLEANUP
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// file and directory functions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
const wxChar* wxGetHomeDir( wxString *home )
|
|
{
|
|
*home = wxGetUserHome( wxString() );
|
|
if ( home->IsEmpty() )
|
|
*home = wxT("/");
|
|
|
|
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 )
|
|
{
|
|
wxChar *ptr;
|
|
|
|
if ((ptr = wxGetenv(wxT("HOME"))) != NULL)
|
|
{
|
|
return ptr;
|
|
}
|
|
if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)
|
|
{
|
|
who = getpwnam(wxConvertWX2MB(ptr));
|
|
}
|
|
|
|
// We now make sure the the user exists!
|
|
if (who == NULL)
|
|
{
|
|
who = getpwuid(getuid());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
who = getpwnam (user.mb_str());
|
|
}
|
|
|
|
return wxConvertMB2WX(who ? who->pw_dir : 0);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// network and user id routines
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// 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") );
|
|
|
|
*buf = wxT('\0');
|
|
|
|
// we're using uname() which is POSIX instead of less standard sysinfo()
|
|
#if defined(HAVE_UNAME)
|
|
struct utsname uts;
|
|
bool ok = uname(&uts) != -1;
|
|
if ( ok )
|
|
{
|
|
wxStrncpy(buf, wxConvertMB2WX(uts.nodename), sz - 1);
|
|
buf[sz] = wxT('\0');
|
|
}
|
|
#elif defined(HAVE_GETHOSTNAME)
|
|
bool ok = gethostname(buf, sz) != -1;
|
|
#else // no uname, no gethostname
|
|
wxFAIL_MSG(wxT("don't know host name for this machine"));
|
|
|
|
bool ok = FALSE;
|
|
#endif // uname/gethostname
|
|
|
|
if ( !ok )
|
|
{
|
|
wxLogSysError(_("Cannot get the hostname"));
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
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 = wxT('\0');
|
|
if ((who = getpwuid(getuid ())) != NULL)
|
|
{
|
|
wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
bool wxGetUserName(wxChar *buf, int sz)
|
|
{
|
|
struct passwd *who;
|
|
|
|
*buf = wxT('\0');
|
|
if ((who = getpwuid (getuid ())) != NULL)
|
|
{
|
|
// pw_gecos field in struct passwd is not standard
|
|
#if HAVE_PW_GECOS
|
|
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
|
|
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
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// error and debug output routines (deprecated, use wxLog)
|
|
// ----------------------------------------------------------------------------
|
|
|
|
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()
|
|
}
|
|
|