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 char* wxGetHomeDir( char *dest )
  84 {
  85   wxString tmp = wxGetUserHome( wxString() );
  86   if (tmp.IsNull())
  87     strcpy( wxBuffer, "/" );
  88   else
  89     strcpy( wxBuffer, tmp );
  90   if (dest) strcpy( dest, WXSTRINGCAST tmp );
  91   return wxBuffer;
  92 };
  93
  94 char *wxGetUserHome( const wxString &user )
  95 {
  96   struct passwd *who = (struct passwd *) NULL;
  97
  98   if (user.IsNull() || (user== ""))
  99   {
 100         register char *ptr;
 101
 102         if ((ptr = getenv("HOME")) != NULL)
 103             return ptr;
 104         if ((ptr = getenv("USER")) != NULL
 105         || (ptr = getenv("LOGNAME")) != NULL) {
 106             who = getpwnam(ptr);
 107         }
 108         // We now make sure the the user exists!
 109         if (who == NULL)
 110             who = getpwuid(getuid());
 111   }
 112   else
 113     who = getpwnam (user);
 114
 115   return who ? who->pw_dir : (char*)NULL;
 116 };
 117
 118 //------------------------------------------------------------------------
 119 // id routines
 120 //------------------------------------------------------------------------
 121
 122 bool wxGetHostName(char *buf, int sz)
 123 {
 124     *buf = '\0';
 125 #if defined(__SVR4__) && !defined(__sgi)
 126     return (sysinfo(SI_HOSTNAME, buf, sz) != -1);
 127 #else /* BSD Sockets */
 128     char name[255];
 129     struct hostent *h;
 130     // Get hostname
 131     if (gethostname(name, sizeof(name)/sizeof(char)-1) == -1)
 132         return FALSE;
 133     // Get official full name of host
 134     strncpy(buf, (h=gethostbyname(name))!=NULL ? h->h_name : name, sz-1);
 135     return TRUE;
 136 #endif
 137 }
 138
 139 bool wxGetUserId(char *buf, int sz)
 140 {
 141     struct passwd *who;
 142
 143     *buf = '\0';
 144     if ((who = getpwuid(getuid ())) != NULL) {
 145         strncpy (buf, who->pw_name, sz-1);
 146         return TRUE;
 147     }
 148     return FALSE;
 149 }
 150
 151 bool wxGetUserName(char *buf, int sz)
 152 {
 153     struct passwd *who;
 154
 155     *buf = '\0';
 156     if ((who = getpwuid (getuid ())) != NULL) {
 157         strncpy (buf, who->pw_gecos, sz - 1);
 158         return TRUE;
 159     }
 160     return FALSE;
 161 }
 162
 163 //------------------------------------------------------------------------
 164 // error and debug output routines
 165 //------------------------------------------------------------------------
 166
 167 void wxDebugMsg( const char *format, ... )
 168 {
 169   va_list ap;
 170   va_start( ap, format );
 171   vfprintf( stderr, format, ap );
 172   fflush( stderr );
 173   va_end(ap);
 174 };
 175
 176 void wxError( const wxString &msg, const wxString &title )
 177 {
 178   fprintf( stderr, "Error " );
 179   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 180   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 181   fprintf( stderr, ".\n" );
 182 };
 183
 184 void wxFatalError( const wxString &msg, const wxString &title )
 185 {
 186   fprintf( stderr, "Error " );
 187   if (!title.IsNull()) fprintf( stderr, "%s ", WXSTRINGCAST(title) );
 188   if (!msg.IsNull()) fprintf( stderr, ": %s", WXSTRINGCAST(msg) );
 189   fprintf( stderr, ".\n" );
 190   exit(1);
 191 };
 192
 193 //------------------------------------------------------------------------
 194 // directory routines
 195 //------------------------------------------------------------------------
 196
 197 bool wxDirExists( const wxString& dir )
 198 {
 199   char buf[500];
 200   strcpy( buf, WXSTRINGCAST(dir) );
 201   struct stat sbuf;
 202   return ((stat(buf, &sbuf) != -1) && S_ISDIR(sbuf.st_mode) ? TRUE : FALSE);
 203 };
 204
 205 //------------------------------------------------------------------------
 206 // wild character routines
 207 //------------------------------------------------------------------------
 208
 209 bool wxIsWild( const wxString& pattern )
 210 {
 211   wxString tmp = pattern;
 212   char *pat = WXSTRINGCAST(tmp);
 213     while (*pat) {
 214         switch (*pat++) {
 215         case '?': case '*': case '[': case '{':
 216             return TRUE;
 217         case '\\':
 218             if (!*pat++)
 219                 return FALSE;
 220         }
 221     }
 222     return FALSE;
 223 };
 224
 225
 226 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
 227 {
 228   wxString tmp1 = pat;
 229   char *pattern = WXSTRINGCAST(tmp1);
 230   wxString tmp2 = text;
 231   char *str = WXSTRINGCAST(tmp2);
 232     char c;
 233     char *cp;
 234     bool done = FALSE, ret_code, ok;
 235     // Below is for vi fans
 236     const char OB = '{', CB = '}';
 237
 238     // dot_special means '.' only matches '.'
 239     if (dot_special && *str == '.' && *pattern != *str)
 240         return FALSE;
 241
 242     while ((*pattern != '\0') && (!done)
 243     && (((*str=='\0')&&((*pattern==OB)||(*pattern=='*')))||(*str!='\0'))) {
 244         switch (*pattern) {
 245         case '\\':
 246             pattern++;
 247             if (*pattern != '\0')
 248                 pattern++;
 249             break;
 250         case '*':
 251             pattern++;
 252             ret_code = FALSE;
 253             while ((*str!='\0')
 254             && (!(ret_code=wxMatchWild(pattern, str++, FALSE))))
 255                 /*loop*/;
 256             if (ret_code) {
 257                 while (*str != '\0')
 258                     str++;
 259                 while (*pattern != '\0')
 260                     pattern++;
 261             }
 262             break;
 263         case '[':
 264             pattern++;
 265           repeat:
 266             if ((*pattern == '\0') || (*pattern == ']')) {
 267                 done = TRUE;
 268                 break;
 269             }
 270             if (*pattern == '\\') {
 271                 pattern++;
 272                 if (*pattern == '\0') {
 273                     done = TRUE;
 274                     break;
 275                 }
 276             }
 277             if (*(pattern + 1) == '-') {
 278                 c = *pattern;
 279                 pattern += 2;
 280                 if (*pattern == ']') {
 281                     done = TRUE;
 282                     break;
 283                 }
 284                 if (*pattern == '\\') {
 285                     pattern++;
 286                     if (*pattern == '\0') {
 287                         done = TRUE;
 288                         break;
 289                     }
 290                 }
 291                 if ((*str < c) || (*str > *pattern)) {
 292                     pattern++;
 293                     goto repeat;
 294                 }
 295             } else if (*pattern != *str) {
 296                 pattern++;
 297                 goto repeat;
 298             }
 299             pattern++;
 300             while ((*pattern != ']') && (*pattern != '\0')) {
 301                 if ((*pattern == '\\') && (*(pattern + 1) != '\0'))
 302                     pattern++;
 303                 pattern++;
 304             }
 305             if (*pattern != '\0') {
 306                 pattern++, str++;
 307             }
 308             break;
 309         case '?':
 310             pattern++;
 311             str++;
 312             break;
 313         case OB:
 314             pattern++;
 315             while ((*pattern != CB) && (*pattern != '\0')) {
 316                 cp = str;
 317                 ok = TRUE;
 318                 while (ok && (*cp != '\0') && (*pattern != '\0')
 319                 &&  (*pattern != ',') && (*pattern != CB)) {
 320                     if (*pattern == '\\')
 321                         pattern++;
 322                     ok = (*pattern++ == *cp++);
 323                 }
 324                 if (*pattern == '\0') {
 325                     ok = FALSE;
 326                     done = TRUE;
 327                     break;
 328                 } else if (ok) {
 329                     str = cp;
 330                     while ((*pattern != CB) && (*pattern != '\0')) {
 331                         if (*++pattern == '\\') {
 332                             if (*++pattern == CB)
 333                                 pattern++;
 334                         }
 335                     }
 336                 } else {
 337                     while (*pattern!=CB && *pattern!=',' && *pattern!='\0') {
 338                         if (*++pattern == '\\') {
 339                             if (*++pattern == CB || *pattern == ',')
 340                                 pattern++;
 341                         }
 342                     }
 343                 }
 344                 if (*pattern != '\0')
 345                     pattern++;
 346             }
 347             break;
 348         default:
 349             if (*str == *pattern) {
 350                 str++, pattern++;
 351             } else {
 352                 done = TRUE;
 353             }
 354         }
 355     }
 356     while (*pattern == '*')
 357         pattern++;
 358     return ((*str == '\0') && (*pattern == '\0'));
 359 };
 360
 361 //------------------------------------------------------------------------
 362 // subprocess routines
 363 //------------------------------------------------------------------------
 364
 365 typedef struct {
 366   gint pid, tag;
 367   wxProcess *process;
 368 } wxEndProcessData;
 369
 370 static void GTK_EndProcessDetector(gpointer data, gint source,
 371                                    GdkInputCondition WXUNUSED(condition) )
 372 {
 373   wxEndProcessData *proc_data = (wxEndProcessData *)data;
 374   int pid;
 375
 376   pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 377
 378   /* wait4 is not part of any standard, use at own risk
 379    * not sure what wait4 does, but wait3 seems to be closest, whats a digit ;-)
 380    * --- offer@sgi.com */
 381 #if !defined(__sgi)
 382   wait4(proc_data->pid, NULL, 0, NULL);
 383 #else
 384   wait3((int *) NULL, 0, (rusage *) NULL);
 385 #endif
 386
 387   close(source);
 388   gdk_input_remove(proc_data->tag);
 389
 390   if (proc_data->process)
 391     proc_data->process->OnTerminate(proc_data->pid);
 392
 393   if (proc_data->pid > 0)
 394     delete proc_data;
 395   else
 396     proc_data->pid = 0;
 397 };
 398
 399 long wxExecute( char **argv, bool sync, wxProcess *process )
 400 {
 401     wxEndProcessData *data = new wxEndProcessData;
 402     int end_proc_detect[2];
 403
 404     if (*argv == NULL)
 405         return 0;
 406
 407     /* Create pipes */
 408     if (pipe(end_proc_detect) == -1) {
 409       perror("pipe failed");
 410       return 0;
 411     }
 412
 413     /* fork the process */
 414 #if defined(sun) || defined(__ultrix) || defined(__bsdi__)
 415     pid_t pid = vfork();
 416 #else
 417     pid_t pid = fork();
 418 #endif
 419     if (pid == -1) {
 420         perror ("fork failed");
 421         return 0;
 422     } else if (pid == 0) {
 423         /* Close fd not useful */
 424         close(end_proc_detect[0]); // close reading side
 425
 426         /* child */
 427 #ifdef _AIX
 428         execvp ((const char *)*argv, (const char **)argv);
 429 #else
 430         execvp (*argv, argv);
 431 #endif
 432         if (errno == ENOENT)
 433             wxError("command not found", *argv);
 434         else
 435             perror (*argv);
 436         wxError("could not execute", *argv);
 437         _exit (-1);
 438     }
 439
 440     close(end_proc_detect[1]); // close writing side
 441     data->tag = gdk_input_add(end_proc_detect[0], GDK_INPUT_READ,
 442                               GTK_EndProcessDetector, (gpointer)data);
 443     data->pid = pid;
 444     if (!sync) {
 445       data->process = process;
 446     } else {
 447       data->process = (wxProcess *) NULL;
 448       data->pid = -(data->pid);
 449
 450       while (data->pid != 0)
 451         wxYield();
 452
 453       delete data;
 454     }
 455
 456     return pid;
 457 };
 458
 459 long wxExecute( const wxString& command, bool sync, wxProcess *process )
 460 {
 461     if (command.IsNull() || command == "") return FALSE;
 462
 463     int argc = 0;
 464     char *argv[127];
 465     char tmp[1024];
 466     const char *IFS = " \t\n";
 467
 468     strncpy (tmp, command, sizeof(tmp) / sizeof(char) - 1);
 469     tmp[sizeof (tmp) / sizeof (char) - 1] = '\0';
 470     argv[argc++] = strtok (tmp, IFS);
 471     while ((argv[argc++] = strtok((char *) NULL, IFS)) != NULL)
 472         /* loop */ ;
 473     return wxExecute(argv, sync, process);
 474 };
 475
 476