X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ea18eed94c637bee3343b929e09cae78a1b80928..55e18dbe2faca047b2008734782d52a6eb140115:/src/unix/utilsunx.cpp?ds=inline diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp index f7b9b01140..be66b6c9e4 100644 --- a/src/unix/utilsunx.cpp +++ b/src/unix/utilsunx.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: utilsunx.cpp +// Name: unix/utilsunx.cpp // Purpose: generic Unix implementation of many wx functions // Author: Vadim Zeitlin // Id: $Id$ @@ -20,11 +20,55 @@ #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/wfstream.h" + +#if defined( __MWERKS__ ) && defined(__MACH__) +#define WXWIN_OS_DESCRIPTION "MacOS X" +#define HAVE_NANOSLEEP +#endif + +// not only the statfs syscall is called differently depending on platform, but +// one of its incarnations, statvfs(), takes different arguments under +// different platforms and even different versions of the same system (Solaris +// 7 and 8): if you want to test for this, don't forget that the problems only +// appear if the large files support is enabled +#ifdef HAVE_STATFS + #ifdef __BSD__ + #include + #include + #else // !__BSD__ + #include + #endif // __BSD__/!__BSD__ + + #define wxStatfs statfs +#endif // HAVE_STATFS + +#ifdef HAVE_STATVFS + #include + + #define wxStatfs statvfs +#endif // HAVE_STATVFS + +#if defined(HAVE_STATFS) || defined(HAVE_STATVFS) + // WX_STATFS_T is detected by configure + #define wxStatfs_t WX_STATFS_T +#endif + +#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 #include @@ -40,11 +84,9 @@ #include // for O_WRONLY and friends #include // nanosleep() and/or usleep() #include // isspace() +#include // needed for FD_SETSIZE -// JACS: needed for FD_SETSIZE -#include - -#if HAVE_UNAME +#ifdef HAVE_UNAME #include // for uname() #endif // HAVE_UNAME @@ -58,15 +100,27 @@ #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 + 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 }; + + #define HAVE_USLEEP 1 #endif // Unices without usleep() // ============================================================================ @@ -84,14 +138,14 @@ void wxSleep(int nSecs) void wxUsleep(unsigned long milliseconds) { -#if HAVE_NANOSLEEP +#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 (void)nanosleep(&tmReq, (timespec *)NULL); -#elif HAVE_USLEEP +#elif defined(HAVE_USLEEP) // uncomment this if you feel brave or if you are sure that your version // of Solaris has a safe usleep() function but please notice that usleep() // is known to lead to crashes in MT programs in Solaris 2.[67] and is not @@ -101,6 +155,9 @@ void wxUsleep(unsigned long milliseconds) #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 @@ -110,40 +167,80 @@ void wxUsleep(unsigned long milliseconds) // process management // ---------------------------------------------------------------------------- -int wxKill(long pid, wxSignal sig) +int wxKill(long pid, wxSignal sig, wxKillError *rc) { - return kill(pid, (int)sig); + int err = kill((pid_t)pid, (int)sig); + if ( rc ) + { + switch ( errno ) + { + 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 ) +long wxExecute( const wxString& command, int flags, wxProcess *process ) { - wxCHECK_MSG( !command.IsEmpty(), 0, "can't exec empty command" ); + wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") ); + +#if wxUSE_THREADS + // fork() doesn't mix well with POSIX threads: on many systems the program + // deadlocks or crashes for some reason. Probably our code is buggy and + // doesn't do something which must be done to allow this to work, but I + // don't know what yet, so for now just warn the user (this is the least we + // can do) about it + wxASSERT_MSG( wxThread::IsMain(), + _T("wxExecute() can be called only from the main thread") ); +#endif // wxUSE_THREADS int argc = 0; - char *argv[WXEXECUTE_NARGS]; + wxChar *argv[WXEXECUTE_NARGS]; wxString argument; - const char *cptr = command.c_str(); - char quotechar = '\0'; // is arg quoted? + const wxChar *cptr = command.c_str(); + wxChar quotechar = wxT('\0'); // is arg quoted? bool escaped = FALSE; // split the command line in arguments do { - argument=""; - quotechar = '\0'; + argument=wxT(""); + quotechar = wxT('\0'); // eat leading whitespace: - while ( isspace(*cptr) ) + while ( wxIsspace(*cptr) ) cptr++; - if ( *cptr == '\'' || *cptr == '"' ) + if ( *cptr == wxT('\'') || *cptr == wxT('"') ) quotechar = *cptr++; do { - if ( *cptr == '\\' && ! escaped ) + if ( *cptr == wxT('\\') && ! escaped ) { escaped = TRUE; cptr++; @@ -156,14 +253,14 @@ long wxExecute( const wxString& command, bool sync, wxProcess *process ) // have we reached the end of the argument? if ( (*cptr == quotechar && ! escaped) - || (quotechar == '\0' && isspace(*cptr)) - || *cptr == '\0' ) + || (quotechar == wxT('\0') && wxIsspace(*cptr)) + || *cptr == wxT('\0') ) { wxASSERT_MSG( argc < WXEXECUTE_NARGS, - "too many arguments in wxExecute" ); + wxT("too many arguments in wxExecute") ); - argv[argc] = new char[argument.length() + 1]; - strcpy(argv[argc], argument.c_str()); + argv[argc] = new wxChar[argument.length() + 1]; + wxStrcpy(argv[argc], argument.c_str()); argc++; // if not at end of buffer, swallow last character: @@ -177,7 +274,7 @@ long wxExecute( const wxString& command, bool sync, wxProcess *process ) argv[argc] = NULL; // do execute the command - long lRc = wxExecute(argv, sync, process); + long lRc = wxExecute(argv, flags, process); // clean up argc = 0; @@ -187,132 +284,494 @@ long wxExecute( const wxString& command, bool sync, wxProcess *process ) 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; } -void wxHandleProcessTermination(wxEndProcessData *proc_data) +bool wxShell(const wxString& command) +{ + return wxExecute(wxMakeShellCommand(command), wxEXEC_SYNC) == 0; +} + +bool wxShell(const wxString& command, wxArrayString& output) { - int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid); + wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") ); - // 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; - if ( waitpid(pid, &status, 0) == -1 || !WIFEXITED(status) ) + return wxExecute(wxMakeShellCommand(command), output); +} + +// Shutdown or reboot the PC +bool wxShutdown(wxShutdownFlags wFlags) +{ + wxChar level; + switch ( wFlags ) { - wxLogSysError(_("Waiting for subprocess termination failed")); + case wxSHUTDOWN_POWEROFF: + level = _T('0'); + break; + + case wxSHUTDOWN_REBOOT: + level = _T('6'); + break; + + default: + wxFAIL_MSG( _T("unknown wxShutdown() flag") ); + return FALSE; } - else + + return system(wxString::Format(_T("init %c"), level).mb_str()) == 0; +} + + +#if wxUSE_GUI + +void wxHandleProcessTermination(wxEndProcessData *proc_data) +{ + // notify user about termination if required + if ( proc_data->process ) { - // notify user about termination if required - if (proc_data->process) - { - proc_data->process->OnTerminate(proc_data->pid, - WEXITSTATUS(status)); - } + proc_data->process->OnTerminate(proc_data->pid, proc_data->exitcode); } // clean up if ( proc_data->pid > 0 ) { - delete proc_data; + delete proc_data; } else { - // wxExecute() will know about it - proc_data->exitcode = status; + // let wxExecute() know that the process has terminated + proc_data->pid = 0; + } +} + +#endif // wxUSE_GUI + +// ---------------------------------------------------------------------------- +// wxStream classes to support IO redirection in wxExecute +// ---------------------------------------------------------------------------- + +#if wxUSE_STREAMS - proc_data->pid = 0; +// ---------------------------------------------------------------------------- +// wxPipeInputStream: stream for reading from a pipe +// ---------------------------------------------------------------------------- + +class wxPipeInputStream : public wxFileInputStream +{ +public: + wxPipeInputStream(int fd) : wxFileInputStream(fd) { } + + // return TRUE if the pipe is still opened + bool IsOpened() const { return !Eof(); } + + // return TRUE if we have anything to read, don't block + virtual bool CanRead() const; +}; + +bool wxPipeInputStream::CanRead() const +{ + if ( m_lasterror == wxSTREAM_EOF ) + return FALSE; + + // check if there is any input available + struct timeval tv; + tv.tv_sec = 0; + tv.tv_usec = 0; + + const int fd = m_file->fd(); + + fd_set readfds; + FD_ZERO(&readfds); + FD_SET(fd, &readfds); + switch ( select(fd + 1, &readfds, NULL, NULL, &tv) ) + { + case -1: + wxLogSysError(_("Impossible to get child process input")); + // fall through + + case 0: + return FALSE; + + default: + wxFAIL_MSG(_T("unexpected select() return value")); + // still fall through + + case 1: + // input available -- or maybe not, as select() returns 1 when a + // read() will complete without delay, but it could still not read + // anything + return !Eof(); } } -long wxExecute( char **argv, bool sync, wxProcess *process ) +// 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 + +// ---------------------------------------------------------------------------- +// wxPipe: this encapsulates pipe() system call +// ---------------------------------------------------------------------------- + +class wxPipe { - wxCHECK_MSG( *argv, 0, "can't exec empty command" ); +public: + // the symbolic names for the pipe ends + enum Direction + { + Read, + Write + }; + + enum + { + INVALID_FD = -1 + }; + + // default ctor doesn't do anything + wxPipe() { m_fds[Read] = m_fds[Write] = INVALID_FD; } + + // create the pipe, return TRUE if ok, FALSE on error + bool Create() + { + if ( pipe(m_fds) == -1 ) + { + wxLogSysError(_("Pipe creation failed")); + + return FALSE; + } + + return TRUE; + } + + // return TRUE if we were created successfully + bool IsOk() const { return m_fds[Read] != INVALID_FD; } + + // return the descriptor for one of the pipe ends + int operator[](Direction which) const + { + wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_fds), + _T("invalid pipe index") ); + + return m_fds[which]; + } - int end_proc_detect[2]; + // detach a descriptor, meaning that the pipe dtor won't close it, and + // return it + int Detach(Direction which) + { + wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_fds), + _T("invalid pipe index") ); + + int fd = m_fds[which]; + m_fds[which] = INVALID_FD; + + return fd; + } + + // close the pipe descriptors + void Close() + { + for ( size_t n = 0; n < WXSIZEOF(m_fds); n++ ) + { + if ( m_fds[n] != INVALID_FD ) + close(m_fds[n]); + } + } + + // dtor closes the pipe descriptors + ~wxPipe() { Close(); } + +private: + int m_fds[2]; +}; + +// ---------------------------------------------------------------------------- +// wxExecute: the real worker function +// ---------------------------------------------------------------------------- + +#ifdef __VMS + #pragma message disable codeunreachable +#endif + +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 + // + // 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 ((flags & wxEXEC_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 && !(defined(__DARWIN__) && defined(__WXMAC__)) // create pipes - if (pipe(end_proc_detect) == -1) + wxPipe pipeEndProcDetect; + if ( !pipeEndProcDetect.Create() ) { - wxLogSysError( _("Pipe creation failed") ); - return 0; + wxLogError( _("Failed to execute '%s'\n"), *argv ); + + ARGS_CLEANUP; + + return ERROR_RETURN_CODE; + } +#endif // wxUSE_GUI && !(defined(__DARWIN__) && defined(__WXMAC__)) + + // pipes for inter process communication + wxPipe pipeIn, // stdin + pipeOut, // stdout + pipeErr; // stderr + + if ( process && process->IsRedirected() ) + { + if ( !pipeIn.Create() || !pipeOut.Create() || !pipeErr.Create() ) + { + wxLogError( _("Failed to execute '%s'\n"), *argv ); + + ARGS_CLEANUP; + + return ERROR_RETURN_CODE; + } } // fork the process -#ifdef HAVE_VFORK - pid_t pid = vfork(); + // + // NB: do *not* use vfork() here, it completely breaks this code for some + // reason under Solaris (and maybe others, although not under Linux) + // But on OpenVMS we do not have fork so we have to use vfork and + // cross our fingers that it works. +#ifdef __VMS + pid_t pid = vfork(); #else - pid_t pid = fork(); + pid_t pid = fork(); #endif - if (pid == -1) + if ( pid == -1 ) // error? { 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 - close(end_proc_detect[0]); // close reading side - - // 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 ( !(flags & wxEXEC_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[wxPipe::Read] + || fd == pipeOut[wxPipe::Write] + || fd == pipeErr[wxPipe::Write] +#if wxUSE_GUI && !(defined(__DARWIN__) && defined(__WXMAC__)) + || fd == pipeEndProcDetect[wxPipe::Write] +#endif // wxUSE_GUI && !(defined(__DARWIN__) && defined(__WXMAC__)) + ) + { + // don't close this one, we still need it + continue; + } + + // leave stderr opened too, it won't do any harm + if ( fd != STDERR_FILENO ) close(fd); } } -#if 0 - close(STDERR_FILENO); +#if !defined(__VMS) && !defined(__EMX__) + if ( flags & wxEXEC_MAKE_GROUP_LEADER ) + { + // Set process group to child process' pid. Then killing -pid + // of the parent will kill the process and all of its children. + setsid(); + } +#endif // !__VMS - // 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 +#if wxUSE_GUI && !(defined(__DARWIN__) && defined(__WXMAC__)) + // reading side can be safely closed but we should keep the write one + // opened + pipeEndProcDetect.Detach(wxPipe::Write); + pipeEndProcDetect.Close(); +#endif // wxUSE_GUI && !(defined(__DARWIN__) && defined(__WXMAC__)) - execvp (*argv, argv); + // redirect stdin, stdout and stderr + if ( pipeIn.IsOk() ) + { + if ( dup2(pipeIn[wxPipe::Read], STDIN_FILENO) == -1 || + dup2(pipeOut[wxPipe::Write], STDOUT_FILENO) == -1 || + dup2(pipeErr[wxPipe::Write], STDERR_FILENO) == -1 ) + { + wxLogSysError(_("Failed to redirect child process input/output")); + } - // there is no return after successful exec() - fprintf(stderr, _("Can't execute '%s'\n"), *argv); + pipeIn.Close(); + pipeOut.Close(); + pipeErr.Close(); + } + + 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, "%s%s", ppc_ == mb_argv ? "" : ", ", *ppc_); + fprintf(stderr, ") failed with error %d!\n", errno); + + // there is no return after successful exec() _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? + // + // and, sure enough, other compilers complain about unreachable code + // after exit() call, so we can just always have return here... +#if defined(__VMS) || defined(__INTEL_COMPILER) + return 0; +#endif } - else + else // we're in parent { - // we're in parent - close(end_proc_detect[1]); // close writing side + ARGS_CLEANUP; + + // prepare for IO redirection + +#if wxUSE_STREAMS + // the input buffer bufOut is connected to stdout, this is why it is + // called bufOut and not bufIn + wxStreamTempInputBuffer bufOut, + bufErr; +#endif // wxUSE_STREAMS + + if ( process && process->IsRedirected() ) + { +#if wxUSE_STREAMS + wxOutputStream *inStream = + new wxFileOutputStream(pipeIn.Detach(wxPipe::Write)); + + wxPipeInputStream *outStream = + new wxPipeInputStream(pipeOut.Detach(wxPipe::Read)); + + wxPipeInputStream *errStream = + new wxPipeInputStream(pipeErr.Detach(wxPipe::Read)); + + process->SetPipeStreams(outStream, inStream, errStream); + bufOut.Init(outStream); + bufErr.Init(errStream); +#endif // wxUSE_STREAMS + } + + if ( pipeIn.IsOk() ) + { + pipeIn.Close(); + pipeOut.Close(); + pipeErr.Close(); + } + +#if wxUSE_GUI && !defined(__WXMICROWIN__) wxEndProcessData *data = new wxEndProcessData; - data->tag = wxAddProcessCallback(data, end_proc_detect[0]); - if ( sync ) + // wxAddProcessCallback is now (with DARWIN) allowed to call the + // callback function directly if the process terminates before + // the callback can be added to the run loop. Set up the data. + if ( flags & wxEXEC_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; + } + else + { + // 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; + } + + +#if defined(__DARWIN__) && defined(__WXMAC__) + data->tag = wxAddProcessCallbackForPid(data,pid); +#else + data->tag = wxAddProcessCallback + ( + data, + pipeEndProcDetect.Detach(wxPipe::Read) + ); + + pipeEndProcDetect.Close(); +#endif // defined(__DARWIN__) && defined(__WXMAC__) + + if ( flags & wxEXEC_SYNC ) + { + 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 + bufOut.Update(); + bufErr.Update(); +#endif // wxUSE_STREAMS - // it will be set to 0 from GTK_EndProcessDetector - while (data->pid != 0) + // give GTK+ a chance to call GTK_EndProcessDetector here and + // also repaint the GUI wxYield(); + } int exitcode = data->exitcode; @@ -320,47 +779,77 @@ long wxExecute( char **argv, bool sync, wxProcess *process ) return exitcode; } - else + else // async execution { - // async execution, nothing special to do - caller will be - // notified about the process terminationif process != NULL, data - // will be deleted in GTK_EndProcessDetector - data->process = process; - data->pid = pid; - return pid; } +#else // !wxUSE_GUI + + wxASSERT_MSG( flags & wxEXEC_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 ERROR_RETURN_CODE; } +#ifdef __VMS + #pragma message enable codeunreachable +#endif + +#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 ) { - register char *ptr; + wxChar *ptr; - if ((ptr = getenv("HOME")) != NULL) + if ((ptr = wxGetenv(wxT("HOME"))) != NULL) { +#if wxUSE_UNICODE + wxWCharBuffer buffer( ptr ); + return buffer; +#else return ptr; +#endif } - 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! @@ -371,10 +860,10 @@ char *wxGetUserHome( const wxString &user ) } else { - who = getpwnam (user); + who = getpwnam (user.mb_str()); } - return who ? who->pw_dir : (char*)NULL; + return wxConvertMB2WX(who ? who->pw_dir : 0); } // ---------------------------------------------------------------------------- @@ -384,11 +873,11 @@ char *wxGetUserHome( const wxString &user ) // 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(char *buf, int sz) +static bool wxGetHostNameInternal(wxChar *buf, int sz) { - wxCHECK_MSG( buf, FALSE, "NULL pointer in wxGetHostNameInternal" ); + 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) @@ -396,13 +885,13 @@ static bool wxGetHostNameInternal(char *buf, int sz) 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 // no uname, no gethostname - wxFAIL_MSG("don't know host name for this machibe"); + wxFAIL_MSG(wxT("don't know host name for this machine")); bool ok = FALSE; #endif // uname/gethostname @@ -415,7 +904,7 @@ static bool wxGetHostNameInternal(char *buf, int sz) return ok; } -bool wxGetHostName(char *buf, int sz) +bool wxGetHostName(wxChar *buf, int sz) { bool ok = wxGetHostNameInternal(buf, sz); @@ -423,26 +912,26 @@ bool wxGetHostName(char *buf, int sz) { // BSD systems return the FQDN, we only want the hostname, so extract // it (we consider that dots are domain separators) - char *dot = strchr(buf, '.'); + wxChar *dot = wxStrchr(buf, wxT('.')); if ( dot ) { // nuke it - *dot = '\0'; + *dot = wxT('\0'); } } return ok; } -bool wxGetFullHostName(char *buf, int sz) +bool wxGetFullHostName(wxChar *buf, int sz) { bool ok = wxGetHostNameInternal(buf, sz); if ( ok ) { - if ( !strchr(buf, '.') ) + if ( !wxStrchr(buf, wxT('.')) ) { - struct hostent *host = gethostbyname(buf); + struct hostent *host = gethostbyname(wxConvertWX2MB(buf)); if ( !host ) { wxLogSysError(_("Cannot get the official hostname")); @@ -452,7 +941,7 @@ bool wxGetFullHostName(char *buf, int sz) else { // the canonical name - strncpy(buf, host->h_name, sz); + wxStrncpy(buf, wxConvertMB2WX(host->h_name), sz); } } //else: it's already a FQDN (BSD behaves this way) @@ -461,41 +950,271 @@ bool wxGetFullHostName(char *buf, int sz) return ok; } -bool wxGetUserId(char *buf, int sz) +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; } +#ifndef __WXMAC__ +wxString wxGetOsDescription() +{ +#ifndef WXWIN_OS_DESCRIPTION + #error WXWIN_OS_DESCRIPTION should be defined in config.h by configure +#else + return wxString::FromAscii( WXWIN_OS_DESCRIPTION ); +#endif +} +#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 + +unsigned long wxGetProcessId() +{ + return (unsigned long)getpid(); +} + +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) +{ +#if defined(HAVE_STATFS) || defined(HAVE_STATVFS) + // the case to "char *" is needed for AIX 4.3 + wxStatfs_t fs; + if ( wxStatfs((char *)(const char*)path.fn_str(), &fs) != 0 ) + { + wxLogSysError( wxT("Failed to get file system statistics") ); + + return FALSE; + } + + // 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; +#else // HAVE_STATFS + wxLongLong blockSize = fs.f_bsize; +#endif // HAVE_STATVFS/HAVE_STATFS + + if ( pTotal ) + { + *pTotal = wxLongLong(fs.f_blocks) * blockSize; + } + + if ( pFree ) + { + *pFree = wxLongLong(fs.f_bavail) * blockSize; + } + + return TRUE; +#else // !HAVE_STATFS && !HAVE_STATVFS + return FALSE; +#endif // HAVE_STATFS +} + +// ---------------------------------------------------------------------------- +// 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 ? (const char *)wxString(value).mb_str() + : 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 + +extern "C" 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) // ---------------------------------------------------------------------------- +#if WXWIN_COMPATIBILITY_2_2 + void wxDebugMsg( const char *format, ... ) { va_list ap; @@ -507,18 +1226,20 @@ void wxDebugMsg( const char *format, ... ) 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() } +#endif // WXWIN_COMPATIBILITY_2_2 +