src/gtk/utilsgtk.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utils.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 //#ifdef __GNUG__
  13 //#pragma implementation "utils.h"
  14 //#endif
  15
  16 #include "wx/utils.h"
  17 #include "wx/string.h"
  18
  19 #include <stdarg.h>
  20 #include <dirent.h>
  21 #include <string.h>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24 #include <unistd.h>
  25 #include <sys/wait.h>
  26 #include <pwd.h>
  27 #include <errno.h>
  28 #include <netdb.h>
  29 #include <signal.h>
  30
  31 #ifdef __SVR4__
  32 #include <sys/systeminfo.h>
  33 #endif
  34
  35 //------------------------------------------------------------------------
  36 // misc.
  37 //------------------------------------------------------------------------
  38
  39 void wxBell(void)
  40 {
  41   gdk_beep();
  42 };
  43
  44 void wxSleep(int nSecs)
  45 {
  46   sleep(nSecs);
  47 };
  48
  49 int wxKill(long pid, int sig)
  50 {
  51   return kill(pid, sig);
  52 };
  53
  54 void wxDisplaySize( int *width, int *height )
  55 {
  56   if (width) *width = gdk_screen_width();
  57   if (height) *height = gdk_screen_height();
  58 }
  59
  60 void wxGetMousePosition( int* x, int* y )
  61 {
  62   wxFAIL_MSG( "GetMousePosition not yet implemented" );
  63   if (x) *x = 0;
  64   if (y) *y = 0;
  65 };
  66
  67 bool wxColourDisplay(void)
  68 {
  69   wxFAIL_MSG( "wxColourDisplay always returns TRUE" );
  70   return TRUE;
  71 }
  72
  73 int wxDisplayDepth(void)
  74 {
  75   wxFAIL_MSG( "wxDisplayDepth always returns 8" );
  76   return 8;
  77 }
  78
  79 //------------------------------------------------------------------------
  80 // user and home routines
  81 //------------------------------------------------------------------------
  82
  83 const char* wxGetHomeDir( wxString *home  )
  84 {
  85   *home = wxGetUserHome( wxString() );
  86   if (home->IsNull()) *home = "/";
  87   return *home;
  88 };
  89
  90 char *wxGetUserHome( const wxString &user )
  91 {
  92   struct passwd *who = (struct passwd *) NULL;
  93
  94   if (user.IsNull() || (user== ""))
  95   {
  96         register char *ptr;
  97
  98         if ((ptr = getenv("HOME")) != NULL)
  99             return ptr;
 100         if ((ptr = getenv("USER")) != NULL
 101         || (ptr = getenv("LOGNAME")) != NULL) {
 102             who = getpwnam(ptr);
 103         }
 104         // We now make sure the the user exists!
 105         if (who == NULL)
 106             who = getpwuid(getuid());
 107   }
 108   else
 109     who = getpwnam (user);
 110
 111   return who ? who->pw_dir : (char*)NULL;
 112 };
 113
 114 //------------------------------------------------------------------------
 115 // id routines
 116 //------------------------------------------------------------------------
 117
 118 bool wxGetHostName(char *buf, int sz)
 119 {
 120     *buf = '\0';
 121 #if defined(__SVR4__) && !defined(__sgi)
 122     return (sysinfo(SI_HOSTNAME, buf, sz) != -1);
 123 #else /* BSD Sockets */
 124     char name[255];
 125     struct hostent *h;
 126     // Get hostname
 127     if (gethostname(name, sizeof(name)/sizeof(char)-1) == -1)
 128         return FALSE;
 129     // Get official full name of host
 130     strncpy(buf, (h=gethostbyname(name))!=NULL ? h->h_name : name, sz-1);
 131     return TRUE;
 132 #endif
 133 }
 134
 135 bool wxGetUserId(char *buf, int sz)
 136 {
 137     struct passwd *who;
 138
 139     *buf = '\0';
 140     if ((who = getpwuid(getuid ())) != NULL) {
 141         strncpy (buf, who->pw_name, sz-1);
 142         return TRUE;
 143     }
 144     return FALSE;
 145 }
 146
 147 bool wxGetUserName(char *buf, int sz)
 148 {
 149     struct passwd *who;
 150
 151     *buf = '\0';
 152     if ((who = getpwuid (getuid ())) != NULL) {
 153         strncpy (buf, who->pw_gecos, sz - 1);
 154         return TRUE;
 155     }
 156     return FALSE;
 157 }
 158
 159 //------------------------------------------------------------------------
 160 // error and debug output routines
 161 //------------------------------------------------------------------------
 162
 163 void wxDebugMsg( const char *format, ... )
 164 {
 165   va_list ap;
 166   va_start( ap, format );
 167   vfprintf( stderr, format, ap );
 168   fflush( stderr );
 169   va_end(ap);
 170 };
 171
 172 void wxError( const wxString &msg, const wxString &title )
 173 {
 174   fprintf( stderr, "Error " );
 175   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 176   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 177   fprintf( stderr, ".\n" );
 178 };
 179
 180 void wxFatalError( const wxString &msg, const wxString &title )
 181 {
 182   fprintf( stderr, "Error " );
 183   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 184   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 185   fprintf( stderr, ".\n" );
 186   exit(1);
 187 };
 188
 189 //------------------------------------------------------------------------
 190 // directory routines
 191 //------------------------------------------------------------------------
 192
 193 bool wxDirExists( const wxString& dir )
 194 {
 195   char buf[500];
 196   strcpy( buf, WXSTRINGCAST(dir) );
 197   struct stat sbuf;
 198   return ((stat(buf, &sbuf) != -1) && S_ISDIR(sbuf.st_mode) ? TRUE : FALSE);
 199 };
 200
 201 //------------------------------------------------------------------------
 202 // wild character routines
 203 //------------------------------------------------------------------------
 204
 205 bool wxIsWild( const wxString& pattern )
 206 {
 207   wxString tmp = pattern;
 208   char *pat = WXSTRINGCAST(tmp);
 209     while (*pat) {
 210         switch (*pat++) {
 211         case '?': case '*': case '[': case '{':
 212             return TRUE;
 213         case '\\':
 214             if (!*pat++)
 215                 return FALSE;
 216         }
 217     }
 218     return FALSE;
 219 };
 220
 221
 222 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
 223 {
 224   wxString tmp1 = pat;
 225   char *pattern = WXSTRINGCAST(tmp1);
 226   wxString tmp2 = text;
 227   char *str = WXSTRINGCAST(tmp2);
 228     char c;
 229     char *cp;
 230     bool done = FALSE, ret_code, ok;
 231     // Below is for vi fans
 232     const char OB = '{', CB = '}';
 233
 234     // dot_special means '.' only matches '.'
 235     if (dot_special && *str == '.' && *pattern != *str)
 236         return FALSE;
 237
 238     while ((*pattern != '\0') && (!done)
 239     && (((*str=='\0')&&((*pattern==OB)||(*pattern=='*')))||(*str!='\0'))) {
 240         switch (*pattern) {
 241         case '\\':
 242             pattern++;
 243             if (*pattern != '\0')
 244                 pattern++;
 245             break;
 246         case '*':
 247             pattern++;
 248             ret_code = FALSE;
 249             while ((*str!='\0')
 250             && (!(ret_code=wxMatchWild(pattern, str++, FALSE))))
 251                 /*loop*/;
 252             if (ret_code) {
 253                 while (*str != '\0')
 254                     str++;
 255                 while (*pattern != '\0')
 256                     pattern++;
 257             }
 258             break;
 259         case '[':
 260             pattern++;
 261           repeat:
 262             if ((*pattern == '\0') || (*pattern == ']')) {
 263                 done = TRUE;
 264                 break;
 265             }
 266             if (*pattern == '\\') {
 267                 pattern++;
 268                 if (*pattern == '\0') {
 269                     done = TRUE;
 270                     break;
 271                 }
 272             }
 273             if (*(pattern + 1) == '-') {
 274                 c = *pattern;
 275                 pattern += 2;
 276                 if (*pattern == ']') {
 277                     done = TRUE;
 278                     break;
 279                 }
 280                 if (*pattern == '\\') {
 281                     pattern++;
 282                     if (*pattern == '\0') {
 283                         done = TRUE;
 284                         break;
 285                     }
 286                 }
 287                 if ((*str < c) || (*str > *pattern)) {
 288                     pattern++;
 289                     goto repeat;
 290                 }
 291             } else if (*pattern != *str) {
 292                 pattern++;
 293                 goto repeat;
 294             }
 295             pattern++;
 296             while ((*pattern != ']') && (*pattern != '\0')) {
 297                 if ((*pattern == '\\') && (*(pattern + 1) != '\0'))
 298                     pattern++;
 299                 pattern++;
 300             }
 301             if (*pattern != '\0') {
 302                 pattern++, str++;
 303             }
 304             break;
 305         case '?':
 306             pattern++;
 307             str++;
 308             break;
 309         case OB:
 310             pattern++;
 311             while ((*pattern != CB) && (*pattern != '\0')) {
 312                 cp = str;
 313                 ok = TRUE;
 314                 while (ok && (*cp != '\0') && (*pattern != '\0')
 315                 &&  (*pattern != ',') && (*pattern != CB)) {
 316                     if (*pattern == '\\')
 317                         pattern++;
 318                     ok = (*pattern++ == *cp++);
 319                 }
 320                 if (*pattern == '\0') {
 321                     ok = FALSE;
 322                     done = TRUE;
 323                     break;
 324                 } else if (ok) {
 325                     str = cp;
 326                     while ((*pattern != CB) && (*pattern != '\0')) {
 327                         if (*++pattern == '\\') {
 328                             if (*++pattern == CB)
 329                                 pattern++;
 330                         }
 331                     }
 332                 } else {
 333                     while (*pattern!=CB && *pattern!=',' && *pattern!='\0') {
 334                         if (*++pattern == '\\') {
 335                             if (*++pattern == CB || *pattern == ',')
 336                                 pattern++;
 337                         }
 338                     }
 339                 }
 340                 if (*pattern != '\0')
 341                     pattern++;
 342             }
 343             break;
 344         default:
 345             if (*str == *pattern) {
 346                 str++, pattern++;
 347             } else {
 348                 done = TRUE;
 349             }
 350         }
 351     }
 352     while (*pattern == '*')
 353         pattern++;
 354     return ((*str == '\0') && (*pattern == '\0'));
 355 };
 356
 357 //------------------------------------------------------------------------
 358 // subprocess routines
 359 //------------------------------------------------------------------------
 360
 361 typedef struct {
 362   gint pid, tag;
 363   wxProcess *process;
 364 } wxEndProcessData;
 365
 366 static void GTK_EndProcessDetector(gpointer data, gint source,
 367                                    GdkInputCondition WXUNUSED(condition) )
 368 {
 369   wxEndProcessData *proc_data = (wxEndProcessData *)data;
 370   int pid;
 371
 372   pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 373
 374   /* wait4 is not part of any standard, use at own risk
 375    * not sure what wait4 does, but wait3 seems to be closest, whats a digit ;-)
 376    * --- offer@sgi.com */
 377 #if !defined(__sgi)
 378   wait4(proc_data->pid, NULL, 0, NULL);
 379 #else
 380   wait3((int *) NULL, 0, (rusage *) NULL);
 381 #endif
 382
 383   close(source);
 384   gdk_input_remove(proc_data->tag);
 385
 386   if (proc_data->process)
 387     proc_data->process->OnTerminate(proc_data->pid);
 388
 389   if (proc_data->pid > 0)
 390     delete proc_data;
 391   else
 392     proc_data->pid = 0;
 393 };
 394
 395 long wxExecute( char **argv, bool sync, wxProcess *process )
 396 {
 397     wxEndProcessData *data = new wxEndProcessData;
 398     int end_proc_detect[2];
 399
 400     if (*argv == NULL)
 401         return 0;
 402
 403     /* Create pipes */
 404     if (pipe(end_proc_detect) == -1) {
 405       perror("pipe failed");
 406       return 0;
 407     }
 408
 409     /* fork the process */
 410 #if defined(sun) || defined(__ultrix) || defined(__bsdi__)
 411     pid_t pid = vfork();
 412 #else
 413     pid_t pid = fork();
 414 #endif
 415     if (pid == -1) {
 416         perror ("fork failed");
 417         return 0;
 418     } else if (pid == 0) {
 419         /* Close fd not useful */
 420         close(end_proc_detect[0]); // close reading side
 421
 422         /* child */
 423 #ifdef _AIX
 424         execvp ((const char *)*argv, (const char **)argv);
 425 #else
 426         execvp (*argv, argv);
 427 #endif
 428         if (errno == ENOENT)
 429             wxError("command not found", *argv);
 430         else
 431             perror (*argv);
 432         wxError("could not execute", *argv);
 433         _exit (-1);
 434     }
 435
 436     close(end_proc_detect[1]); // close writing side
 437     data->tag = gdk_input_add(end_proc_detect[0], GDK_INPUT_READ,
 438                               GTK_EndProcessDetector, (gpointer)data);
 439     data->pid = pid;
 440     if (!sync) {
 441       data->process = process;
 442     } else {
 443       data->process = (wxProcess *) NULL;
 444       data->pid = -(data->pid);
 445
 446       while (data->pid != 0)
 447         wxYield();
 448
 449       delete data;
 450     }
 451
 452     return pid;
 453 };
 454
 455 long wxExecute( const wxString& command, bool sync, wxProcess *process )
 456 {
 457     if (command.IsNull() || command == "") return FALSE;
 458
 459     int argc = 0;
 460     char *argv[127];
 461     char tmp[1024];
 462     const char *IFS = " \t\n";
 463
 464     strncpy (tmp, command, sizeof(tmp) / sizeof(char) - 1);
 465     tmp[sizeof (tmp) / sizeof (char) - 1] = '\0';
 466     argv[argc++] = strtok (tmp, IFS);
 467     while ((argv[argc++] = strtok((char *) NULL, IFS)) != NULL)
 468         /* loop */ ;
 469     return wxExecute(argv, sync, process);
 470 };
 471
 472