src/gtk1/utilsgtk.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utils.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   7 // Licence:           wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 //#ifdef __GNUG__
  12 //#pragma implementation "utils.h"
  13 //#endif
  14
  15 #include "wx/utils.h"
  16 #include "wx/string.h"
  17
  18 #include "wx/intl.h"
  19 #include "wx/log.h"
  20
  21 #include <stdarg.h>
  22 #include <dirent.h>
  23 #include <string.h>
  24 #include <sys/stat.h>
  25 #include <sys/types.h>
  26 #include <unistd.h>
  27 #include <sys/wait.h>
  28 #include <pwd.h>
  29 #include <errno.h>
  30 #include <netdb.h>
  31 #include <signal.h>
  32
  33 #include <X11/Xlib.h>
  34 #include <X11/Xutil.h>
  35 #include <X11/Xresource.h>
  36
  37 #include "glib.h"
  38 #include "gdk/gdk.h"
  39 #include "gtk/gtk.h"
  40 #include "gdk/gdkx.h"
  41
  42 #ifdef __SVR4__
  43   #include <sys/systeminfo.h>
  44 #endif
  45
  46 #ifdef __SOLARIS__
  47 // somehow missing from sys/wait.h but in the system's docs
  48 extern "C"
  49 {
  50    pid_t wait4(pid_t pid, int *statusp, int options, struct rusage
  51                *rusage);
  52 }
  53 #endif
  54
  55 //------------------------------------------------------------------------
  56 // misc.
  57 //------------------------------------------------------------------------
  58
  59 void wxBell(void)
  60 {
  61     gdk_beep();
  62 }
  63
  64 void wxSleep(int nSecs)
  65 {
  66     sleep(nSecs);
  67 }
  68
  69 int wxKill(long pid, int sig)
  70 {
  71     return kill(pid, sig);
  72 }
  73
  74 void wxDisplaySize( int *width, int *height )
  75 {
  76     if (width) *width = gdk_screen_width();
  77     if (height) *height = gdk_screen_height();
  78 }
  79
  80 void wxGetMousePosition( int* x, int* y )
  81 {
  82     Window       dumw;
  83     int          dumi;
  84     unsigned int dumu;
  85
  86     XQueryPointer( GDK_DISPLAY(),GDK_ROOT_WINDOW(),
  87                    &dumw,&dumw,x,y,&dumi,&dumi,&dumu );
  88 }
  89
  90 bool wxColourDisplay(void)
  91 {
  92     return TRUE;
  93 }
  94
  95 int wxDisplayDepth(void)
  96 {
  97     wxFAIL_MSG( "wxDisplayDepth always returns 8" );
  98     return 8;
  99 }
 100
 101 //------------------------------------------------------------------------
 102 // user and home routines
 103 //------------------------------------------------------------------------
 104
 105 const char* wxGetHomeDir( wxString *home  )
 106 {
 107     *home = wxGetUserHome( wxString() );
 108     if (home->IsNull()) *home = "/";
 109     return *home;
 110 }
 111
 112 char *wxGetUserHome( const wxString &user )
 113 {
 114     struct passwd *who = (struct passwd *) NULL;
 115
 116     if (user.IsNull() || (user== ""))
 117     {
 118         register char *ptr;
 119
 120         if ((ptr = getenv("HOME")) != NULL)
 121         {
 122             return ptr;
 123         }
 124         if ((ptr = getenv("USER")) != NULL || (ptr = getenv("LOGNAME")) != NULL)
 125         {
 126             who = getpwnam(ptr);
 127         }
 128         // We now make sure the the user exists!
 129         if (who == NULL)
 130         {
 131             who = getpwuid(getuid());
 132         }
 133     }
 134     else
 135     {
 136       who = getpwnam (user);
 137     }
 138
 139     return who ? who->pw_dir : (char*)NULL;
 140 }
 141
 142 //------------------------------------------------------------------------
 143 // id routines
 144 //------------------------------------------------------------------------
 145
 146 bool wxGetHostName(char *buf, int sz)
 147 {
 148     *buf = '\0';
 149 #if defined(__SVR4__) && !defined(__sgi)
 150     //KB: does this return the fully qualified host.domain name?
 151     return (sysinfo(SI_HOSTNAME, buf, sz) != -1);
 152 #else /* BSD Sockets */
 153     char name[255], domain[255];
 154     //struct hostent *h;
 155     // Get hostname
 156     if (gethostname(name, sizeof(name)/sizeof(char)-1) == -1)
 157         return FALSE;
 158     if (getdomainname(domain, sizeof(domain)/sizeof(char)-1) == -1)
 159         return FALSE;
 160     // Get official full name of host
 161     // doesn't return the full qualified name, replaced by following
 162     // code (KB)
 163     // strncpy(buf, (h=gethostbyname(name))!=NULL ? h->h_name : name, sz-1);
 164     if((unsigned)sz > strlen(name)+strlen(domain)+1)
 165     {
 166         strcpy(buf, name);
 167         if(strcmp(domain,"(none)") == 0) // standalone machine
 168         {
 169             strcat(buf,".");
 170             strcat(buf,domain);
 171         }
 172     }
 173     else
 174         return FALSE;
 175     return TRUE;
 176 #endif
 177 }
 178
 179 bool wxGetUserId(char *buf, int sz)
 180 {
 181     struct passwd *who;
 182
 183     *buf = '\0';
 184     if ((who = getpwuid(getuid ())) != NULL) {
 185         strncpy (buf, who->pw_name, sz-1);
 186         return TRUE;
 187     }
 188     return FALSE;
 189 }
 190
 191 bool wxGetUserName(char *buf, int sz)
 192 {
 193     struct passwd *who;
 194     char *comma;
 195
 196     *buf = '\0';
 197     if ((who = getpwuid (getuid ())) != NULL) {
 198        comma = strchr(who->pw_gecos,'c');
 199        if(comma) *comma = '\0'; // cut off non-name comment fields
 200        strncpy (buf, who->pw_gecos, sz - 1);
 201         return TRUE;
 202     }
 203     return FALSE;
 204 }
 205
 206 //------------------------------------------------------------------------
 207 // error and debug output routines
 208 //------------------------------------------------------------------------
 209
 210 void wxDebugMsg( const char *format, ... )
 211 {
 212   va_list ap;
 213   va_start( ap, format );
 214   vfprintf( stderr, format, ap );
 215   fflush( stderr );
 216   va_end(ap);
 217 }
 218
 219 void wxError( const wxString &msg, const wxString &title )
 220 {
 221   fprintf( stderr, "Error " );
 222   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 223   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 224   fprintf( stderr, ".\n" );
 225 }
 226
 227 void wxFatalError( const wxString &msg, const wxString &title )
 228 {
 229   fprintf( stderr, "Error " );
 230   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 231   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 232   fprintf( stderr, ".\n" );
 233   exit(3); // the same exit code as for abort()
 234 }
 235
 236 //------------------------------------------------------------------------
 237 // directory routines
 238 //------------------------------------------------------------------------
 239
 240 bool wxDirExists( const wxString& dir )
 241 {
 242     char buf[500];
 243     strcpy( buf, WXSTRINGCAST(dir) );
 244     struct stat sbuf;
 245     return ((stat(buf, &sbuf) != -1) && S_ISDIR(sbuf.st_mode) ? TRUE : FALSE);
 246 }
 247
 248 //------------------------------------------------------------------------
 249 // subprocess routines
 250 //------------------------------------------------------------------------
 251
 252 struct wxEndProcessData
 253 {
 254   gint pid, tag;
 255   wxProcess *process;
 256 };
 257
 258 static void GTK_EndProcessDetector(gpointer data, gint source,
 259                                    GdkInputCondition WXUNUSED(condition) )
 260 {
 261   wxEndProcessData *proc_data = (wxEndProcessData *)data;
 262   int pid;
 263
 264   pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 265
 266   /* wait4 is not part of any standard, use at own risk
 267    * not sure what wait4 does, but wait3 seems to be closest, whats a digit ;-)
 268    * --- offer@sgi.com */
 269 #if !defined(__sgi)
 270   wait4(proc_data->pid, NULL, 0, NULL);
 271 #else
 272   wait3((int *) NULL, 0, (rusage *) NULL);
 273 #endif
 274
 275   close(source);
 276   gdk_input_remove(proc_data->tag);
 277
 278   if (proc_data->process)
 279     proc_data->process->OnTerminate(proc_data->pid);
 280
 281   if (proc_data->pid > 0)
 282     delete proc_data;
 283   else
 284     proc_data->pid = 0;
 285 }
 286
 287 long wxExecute( char **argv, bool sync, wxProcess *process )
 288 {
 289     wxEndProcessData *data = new wxEndProcessData;
 290     int end_proc_detect[2];
 291
 292     wxCHECK_MSG( *argv, 0, "can't exec empty command" );
 293
 294     /* Create pipes */
 295     if (pipe(end_proc_detect) == -1) {
 296       wxLogSysError(_("Pipe creation failed"));
 297       return 0;
 298     }
 299
 300     /* fork the process */
 301 #if defined(sun) || defined(__ultrix) || defined(__bsdi__)
 302     pid_t pid = vfork();
 303 #else
 304     pid_t pid = fork();
 305 #endif
 306     if (pid == -1) {
 307         // error
 308         wxLogSysError(_("Fork failed"));
 309         return 0;
 310     }
 311     else if (pid == 0) {
 312         // we're in child
 313         close(end_proc_detect[0]); // close reading side
 314         // These three lines close the open file descriptors to
 315         // to avoid any input/output which might block the process
 316         // or irritate the user. If one wants proper IO for the sub-
 317         // process, the "right thing to do" is to start an xterm executing
 318         // it.
 319         close(STDIN_FILENO);
 320         close(STDOUT_FILENO);
 321         close(STDERR_FILENO);
 322
 323 #ifdef _AIX
 324         execvp ((const char *)*argv, (const char **)argv);
 325 #else
 326         execvp (*argv, argv);
 327 #endif
 328         // there is no return after successful exec()
 329         wxLogSysError(_("Can't execute '%s'"), *argv);
 330
 331         _exit(-1);
 332     }
 333     else {
 334       // we're in parent
 335       close(end_proc_detect[1]); // close writing side
 336       data->tag = gdk_input_add(end_proc_detect[0], GDK_INPUT_READ,
 337                                 GTK_EndProcessDetector, (gpointer)data);
 338       data->pid = pid;
 339       if (!sync) {
 340         data->process = process;
 341       }
 342       else {
 343         data->process = (wxProcess *) NULL;
 344         data->pid = -(data->pid);
 345
 346         while (data->pid != 0)
 347           wxYield();
 348
 349         delete data;
 350       }
 351
 352       // @@@ our return value indicates success even if execvp() in the child
 353       //     failed!
 354       return pid;
 355     }
 356 }
 357
 358 long wxExecute( const wxString& command, bool sync, wxProcess *process )
 359 {
 360     static const char *IFS = " \t\n";
 361
 362     wxCHECK_MSG( !command.IsEmpty(), 0, "can't exec empty command" );
 363
 364     int argc = 0;
 365     char *argv[127];
 366     char *tmp = new char[command.Len() + 1];
 367     strcpy(tmp, command);
 368
 369     argv[argc++] = strtok(tmp, IFS);
 370     while ((argv[argc++] = strtok((char *) NULL, IFS)) != NULL)
 371         /* loop */ ;
 372
 373     long lRc = wxExecute(argv, sync, process);
 374
 375     delete [] tmp;
 376
 377     return lRc;
 378 }