src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utilscmn.cpp
   3 // Purpose:     Miscellaneous utility functions and classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "utils.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/defs.h"
  25 #include "wx/utils.h"
  26 #include "wx/window.h"
  27 #include "wx/menu.h"
  28 #include "wx/frame.h"
  29 #include "wx/msgdlg.h"
  30 #include "wx/textdlg.h"
  31 #endif
  32
  33 #include "wx/ioswrap.h"
  34
  35 #if wxUSE_IOSTREAMH
  36     #include <fstream.h>
  37 #else
  38     #include <fstream>
  39 #endif
  40
  41 #include <ctype.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #if !defined(__WATCOMC__)
  46     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  47         #include <errno.h>
  48     #endif
  49 #endif
  50 #include <time.h>
  51 #ifndef __MWERKS__
  52 #include <sys/types.h>
  53 #include <sys/stat.h>
  54 #endif
  55
  56 #ifdef __SALFORDC__
  57 #include <clib.h>
  58 #endif
  59
  60 // Pattern matching code.
  61 // Yes, this path is deliberate (for Borland compilation)
  62 #ifdef wx_mac /* MATTHEW: [5] Mac doesn't like paths with "/" */
  63 #include "glob.inc"
  64 #else
  65 #include "../common/glob.inc"
  66 #endif
  67
  68 #ifdef __WXMSW__
  69 #include "windows.h"
  70 #endif
  71
  72 #define _MAXPATHLEN 500
  73
  74 extern char *wxBuffer;
  75
  76 #ifdef __WXMAC__
  77 int strcasecmp(const char *str_1, const char *str_2)
  78 {
  79   register char c1, c2;
  80   do {
  81     c1 = tolower(*str_1++);
  82     c2 = tolower(*str_2++);
  83   } while ( c1 && (c1 == c2) );
  84
  85   return c1 - c2;
  86 }
  87
  88 int strncasecmp(const char *str_1, const char *str_2, size_t maxchar)
  89 {
  90
  91   register char c1, c2;
  92   while( maxchar--)
  93   {
  94     c1 = tolower(*str_1++);
  95     c2 = tolower(*str_2++);
  96
  97     if ( !c1 || c1!=c2 )
  98                   return c1 - c2;
  99
 100   } ;
 101
 102   return 0 ;
 103
 104 }
 105 #endif
 106 #ifdef __VMS__
 107 // we have no strI functions under VMS, therefore I have implemented
 108 // an inefficient but portable version: convert copies of strings to lowercase
 109 // and then use the normal comparison
 110 static void myLowerString(char *s)
 111 {
 112   while(*s){
 113     if(isalpha(*s)) *s = (char)tolower(*s);
 114     s++;
 115   }
 116 }
 117
 118 int strcasecmp(const char *str_1, const char *str_2)
 119 {
 120   char *temp1 = new char[strlen(str_1)+1];
 121   char *temp2 = new char[strlen(str_2)+1];
 122   strcpy(temp1,str_1);
 123   strcpy(temp2,str_2);
 124   myLowerString(temp1);
 125   myLowerString(temp2);
 126
 127   int result = strcmp(temp1,temp2);
 128   delete[] temp1;
 129   delete[] temp2;
 130
 131   return(result);
 132 }
 133
 134 int strncasecmp(const char *str_1, const char *str_2, size_t maxchar)
 135 {
 136   char *temp1 = new char[strlen(str_1)+1];
 137   char *temp2 = new char[strlen(str_2)+1];
 138   strcpy(temp1,str_1);
 139   strcpy(temp2,str_2);
 140   myLowerString(temp1);
 141   myLowerString(temp2);
 142
 143   int result = strncmp(temp1,temp2,maxchar);
 144   delete[] temp1;
 145   delete[] temp2;
 146
 147   return(result);
 148 }
 149 #endif
 150
 151 #ifdef __WINDOWS__
 152
 153 #ifndef __GNUWIN32__
 154 #ifndef __MWERKS__
 155 #define strcasecmp stricmp
 156 #define strncasecmp strnicmp
 157 #else
 158 #define strcasecmp _stricmp
 159 #define strncasecmp _strnicmp
 160 #endif
 161 #endif
 162
 163 #else
 164 // This declaration is missing in SunOS!
 165 // (Yes, I know it is NOT ANSI-C but its in BSD libc)
 166 #if defined(__xlC) || defined(__AIX__) || defined(__GNUG__)
 167 extern "C"
 168 {
 169   int strcasecmp (const char *, const char *);
 170   int strncasecmp (const char *, const char *, size_t);
 171 }
 172 #endif
 173 #endif  /* __WXMSW__ */
 174
 175
 176 char *
 177 copystring (const char *s)
 178 {
 179   if (s == NULL) s = "";
 180   size_t len = strlen (s) + 1;
 181
 182   char *news = new char[len];
 183   memcpy (news, s, len);    // Should be the fastest
 184
 185   return news;
 186 }
 187
 188 // Id generation
 189 static long wxCurrentId = 100;
 190
 191 long
 192 wxNewId (void)
 193 {
 194   return wxCurrentId++;
 195 }
 196
 197 long
 198 wxGetCurrentId(void) { return wxCurrentId; }
 199
 200 void
 201 wxRegisterId (long id)
 202 {
 203   if (id >= wxCurrentId)
 204     wxCurrentId = id + 1;
 205 }
 206
 207 void
 208 StringToFloat (char *s, float *number)
 209 {
 210   if (s && *s && number)
 211     *number = (float) strtod (s, (char **) NULL);
 212 }
 213
 214 void
 215 StringToDouble (char *s, double *number)
 216 {
 217   if (s && *s && number)
 218     *number = strtod (s, (char **) NULL);
 219 }
 220
 221 char *
 222 FloatToString (float number, const char *fmt)
 223 {
 224   static char buf[256];
 225
 226 //  sprintf (buf, "%.2f", number);
 227   sprintf (buf, fmt, number);
 228   return buf;
 229 }
 230
 231 char *
 232 DoubleToString (double number, const char *fmt)
 233 {
 234   static char buf[256];
 235
 236   sprintf (buf, fmt, number);
 237   return buf;
 238 }
 239
 240 void
 241 StringToInt (char *s, int *number)
 242 {
 243   if (s && *s && number)
 244     *number = (int) strtol (s, (char **) NULL, 10);
 245 }
 246
 247 void
 248 StringToLong (char *s, long *number)
 249 {
 250   if (s && *s && number)
 251     *number = strtol (s, (char **) NULL, 10);
 252 }
 253
 254 char *
 255 IntToString (int number)
 256 {
 257   static char buf[20];
 258
 259   sprintf (buf, "%d", number);
 260   return buf;
 261 }
 262
 263 char *
 264 LongToString (long number)
 265 {
 266   static char buf[20];
 267
 268   sprintf (buf, "%ld", number);
 269   return buf;
 270 }
 271
 272 // Array used in DecToHex conversion routine.
 273 static char hexArray[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B',
 274   'C', 'D', 'E', 'F' };
 275
 276 // Convert 2-digit hex number to decimal
 277 int wxHexToDec(const wxString& buf)
 278 {
 279   int firstDigit, secondDigit;
 280
 281   if (buf.GetChar(0) >= 'A')
 282     firstDigit = buf.GetChar(0) - 'A' + 10;
 283   else
 284     firstDigit = buf.GetChar(0) - '0';
 285
 286   if (buf.GetChar(1) >= 'A')
 287     secondDigit = buf.GetChar(1) - 'A' + 10;
 288   else
 289     secondDigit = buf.GetChar(1) - '0';
 290
 291   return firstDigit * 16 + secondDigit;
 292 }
 293
 294 // Convert decimal integer to 2-character hex string
 295 void wxDecToHex(int dec, char *buf)
 296 {
 297   int firstDigit = (int)(dec/16.0);
 298   int secondDigit = (int)(dec - (firstDigit*16.0));
 299   buf[0] = hexArray[firstDigit];
 300   buf[1] = hexArray[secondDigit];
 301   buf[2] = 0;
 302 }
 303
 304 // Convert decimal integer to 2-character hex string
 305 wxString wxDecToHex(int dec)
 306 {
 307     char buf[3];
 308     wxDecToHex(dec, buf);
 309     return wxString(buf);
 310 }
 311
 312 // Match a string INDEPENDENT OF CASE
 313 bool
 314 StringMatch (char *str1, char *str2, bool subString, bool exact)
 315 {
 316   if (str1 == NULL || str2 == NULL)
 317     return FALSE;
 318   if (str1 == str2)
 319     return TRUE;
 320
 321   if (subString)
 322     {
 323       int len1 = strlen (str1);
 324       int len2 = strlen (str2);
 325       int i;
 326
 327       // Search for str1 in str2
 328       // Slow .... but acceptable for short strings
 329       for (i = 0; i <= len2 - len1; i++)
 330         {
 331           if (strncasecmp (str1, str2 + i, len1) == 0)
 332             return TRUE;
 333         }
 334     }
 335   else if (exact)
 336     {
 337       if (strcasecmp (str1, str2) == 0)
 338         return TRUE;
 339     }
 340   else
 341     {
 342       int len1 = strlen (str1);
 343       int len2 = strlen (str2);
 344
 345       if (strncasecmp (str1, str2, wxMin (len1, len2)) == 0)
 346         return TRUE;
 347     }
 348
 349   return FALSE;
 350 }
 351
 352 // Return the current date/time
 353 // [volatile]
 354 wxString wxNow( void )
 355 {
 356   time_t now = time((time_t *) NULL);
 357   char *date = ctime(&now);
 358   date[24] = '\0';
 359   return wxString(date);
 360 }
 361
 362 /*
 363  * Strip out any menu codes
 364  */
 365
 366 char *wxStripMenuCodes (char *in, char *out)
 367 {
 368   if (!in)
 369     return (char *) NULL;
 370
 371   if (!out)
 372     out = copystring(in);
 373
 374   char *tmpOut = out;
 375
 376   while (*in)
 377     {
 378       if (*in == '&')
 379         {
 380           // Check && -> &, &x -> x
 381           if (*++in == '&')
 382             *out++ = *in++;
 383         }
 384       else if (*in == '\t')
 385         {
 386           // Remove all stuff after \t in X mode, and let the stuff as is
 387           // in Windows mode.
 388           // Accelerators are handled in wx_item.cc for Motif, and are not
 389           // YET supported in XView
 390           break;
 391         }
 392       else
 393         *out++ = *in++;
 394     }                                // while
 395
 396   *out = '\0';
 397
 398   return tmpOut;
 399 }
 400
 401 wxString wxStripMenuCodes(const wxString& str)
 402 {
 403     char *buf = new char[str.Length() + 1];
 404     wxStripMenuCodes((char*) (const char*) str, buf);
 405     wxString str1(buf);
 406     delete[] buf;
 407     return str1;
 408 }
 409
 410 /*
 411  * Window search functions
 412  *
 413  */
 414
 415 /*
 416  * If parent is non-NULL, look through children for a label or title
 417  * matching the specified string. If NULL, look through all top-level windows.
 418  *
 419  */
 420
 421 static wxWindow *wxFindWindowByLabel1 (const wxString& title, wxWindow * parent);
 422
 423 wxWindow *
 424 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 425 {
 426   if (parent)
 427     {
 428       return wxFindWindowByLabel1 (title, parent);
 429     }
 430   else
 431     {
 432       for (wxNode * node = wxTopLevelWindows.First (); node; node = node->Next ())
 433         {
 434           wxWindow *win = (wxWindow *) node->Data ();
 435           wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 436           if (retwin)
 437             return retwin;
 438         }                        // for()
 439
 440     }
 441   return (wxWindow *) NULL;
 442 }
 443
 444 // Recursive
 445 static wxWindow *
 446 wxFindWindowByLabel1 (const wxString& title, wxWindow * parent)
 447 {
 448   if (parent)
 449     {
 450       if (parent->GetLabel() == title)
 451                 return parent;
 452     }
 453
 454   if (parent)
 455     {
 456       for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 457         {
 458           wxWindow *win = (wxWindow *) node->Data ();
 459           wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 460           if (retwin)
 461             return retwin;
 462         }                        // for()
 463
 464     }
 465
 466   return (wxWindow *) NULL;                        // Not found
 467
 468 }
 469
 470 /*
 471  * If parent is non-NULL, look through children for a name
 472  * matching the specified string. If NULL, look through all top-level windows.
 473  *
 474  */
 475
 476 static wxWindow *wxFindWindowByName1 (const wxString& title, wxWindow * parent);
 477
 478 wxWindow *
 479 wxFindWindowByName (const wxString& title, wxWindow * parent)
 480 {
 481   if (parent)
 482     {
 483       return wxFindWindowByName1 (title, parent);
 484     }
 485   else
 486     {
 487       for (wxNode * node = wxTopLevelWindows.First (); node; node = node->Next ())
 488         {
 489           wxWindow *win = (wxWindow *) node->Data ();
 490           wxWindow *retwin = wxFindWindowByName1 (title, win);
 491           if (retwin)
 492             return retwin;
 493         }                        // for()
 494
 495     }
 496   // Failed? Try by label instead.
 497   return wxFindWindowByLabel(title, parent);
 498 }
 499
 500 // Recursive
 501 static wxWindow *
 502 wxFindWindowByName1 (const wxString& title, wxWindow * parent)
 503 {
 504   if (parent)
 505     {
 506             if ( parent->GetName() == title )
 507                         return parent;
 508     }
 509
 510   if (parent)
 511     {
 512       for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 513         {
 514           wxWindow *win = (wxWindow *) node->Data ();
 515           wxWindow *retwin = wxFindWindowByName1 (title, win);
 516           if (retwin)
 517             return retwin;
 518         }                        // for()
 519
 520     }
 521
 522   return (wxWindow *) NULL;                        // Not found
 523
 524 }
 525
 526 // Returns menu item id or -1 if none.
 527 int
 528 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 529 {
 530   wxMenuBar *menuBar = frame->GetMenuBar ();
 531   if (!menuBar)
 532     return -1;
 533   return menuBar->FindMenuItem (menuString, itemString);
 534 }
 535
 536 /*
 537 On Fri, 21 Jul 1995, Paul Craven wrote:
 538
 539 > Is there a way to find the path of running program's executable? I can get
 540 > my home directory, and the current directory, but I don't know how to get the
 541 > executable directory.
 542 >
 543
 544 The code below (warty as it is), does what you want on most Unix,
 545 DOS, and Mac platforms (it's from the ALS Prolog main).
 546
 547 || Ken Bowen      Applied Logic Systems, Inc.         PO Box 180,
 548 ||====            Voice:  +1 (617)965-9191            Newton Centre,
 549 ||                FAX:    +1 (617)965-1636            MA  02159  USA
 550                   Email:  ken@als.com        WWW: http://www.als.com
 551 ------------------------------------------------------------------------
 552 */
 553
 554 // This code is commented out but it may be integrated with wxWin at
 555 // a later date, after testing. Thanks Ken!
 556 #if 0
 557
 558 /*--------------------------------------------------------------------*
 559  | whereami is given a filename f in the form:  whereami(argv[0])
 560  | It returns the directory in which the executable file (containing
 561  | this code [main.c] ) may be found.  A dot will be returned to indicate
 562  | the current directory.
 563  *--------------------------------------------------------------------*/
 564
 565 static void
 566 whereami(name)
 567     char *name;
 568 {
 569     register char *cutoff = NULL;        /* stifle -Wall */
 570     register char *s;
 571     register char *t;
 572     int   cc;
 573     char  ebuf[4096];
 574
 575     /*
 576      * See if the file is accessible either through the current directory
 577      * or through an absolute path.
 578      */
 579
 580     if (access(name, R_OK) == 0) {
 581
 582         /*-------------------------------------------------------------*
 583          * The file was accessible without any other work.  But the current
 584          * working directory might change on us, so if it was accessible
 585          * through the cwd, then we should get it for later accesses.
 586          *-------------------------------------------------------------*/
 587
 588         t = imagedir;
 589         if (!absolute_pathname(name)) {
 590 #if defined(DOS) || defined(__WIN32__)
 591             int   drive;
 592             char *newrbuf;
 593
 594             newrbuf = imagedir;
 595 #ifndef __DJGPP__
 596             if (*(name + 1) == ':') {
 597                 if (*name >= 'a' && *name <= 'z')
 598                     drive = (int) (*name - 'a' + 1);
 599                 else
 600                     drive = (int) (*name - 'A' + 1);
 601                 *newrbuf++ = *name;
 602                 *newrbuf++ = *(name + 1);
 603                 *newrbuf++ = DIR_SEPARATOR;
 604             }
 605             else {
 606                 drive = 0;
 607                 *newrbuf++ = DIR_SEPARATOR;
 608             }
 609             if (getcwd(newrbuf, drive) == 0) {        /* } */
 610 #else
 611             if (getcwd(newrbuf, 1024) == 0) {        /* } */
 612 #endif
 613 #else  /* DOS */
 614 #ifdef HAVE_GETWD
 615             if (getwd(imagedir) == 0) {                /* } */
 616 #else  /* !HAVE_GETWD */
 617             if (getcwd(imagedir, 1024) == 0) {
 618 #endif /* !HAVE_GETWD */
 619 #endif /* DOS */
 620                 fatal_error(FE_GETCWD, 0);
 621             }
 622             for (; *t; t++)        /* Set t to end of buffer */
 623                 ;
 624             if (*(t - 1) == DIR_SEPARATOR)        /* leave slash if already
 625                                                  * last char
 626                                                  */
 627                 cutoff = t - 1;
 628             else {
 629                 cutoff = t;        /* otherwise put one in */
 630                 *t++ = DIR_SEPARATOR;
 631             }
 632         }
 633 #if (!defined(__MAC__) && !defined(__DJGPP__) && !defined(__GO32__) && !defined(__WIN32__))
 634         else
 635                 (*t++ = DIR_SEPARATOR);
 636 #endif
 637
 638         /*-------------------------------------------------------------*
 639          * Copy the rest of the string and set the cutoff if it was not
 640          * already set.  If the first character of name is a slash, cutoff
 641          * is not presently set but will be on the first iteration of the
 642          * loop below.
 643          *-------------------------------------------------------------*/
 644
 645         for ((*name == DIR_SEPARATOR ? (s = name+1) : (s = name));;) {
 646             if (*s == DIR_SEPARATOR)
 647                         cutoff = t;
 648             if (!(*t++ = *s++))
 649                         break;
 650         }
 651
 652     }
 653     else {
 654
 655         /*-------------------------------------------------------------*
 656          * Get the path list from the environment.  If the path list is
 657          * inaccessible for any reason, leave with fatal error.
 658          *-------------------------------------------------------------*/
 659
 660 #ifdef __MAC__
 661         if ((s = getenv("Commands")) == (char *) 0)
 662 #else
 663         if ((s = getenv("PATH")) == (char *) 0)
 664 #endif
 665             fatal_error(FE_PATH, 0);
 666
 667         /*
 668          * Copy path list into ebuf and set the source pointer to the
 669          * beginning of this buffer.
 670          */
 671
 672         strcpy(ebuf, s);
 673         s = ebuf;
 674
 675         for (;;) {
 676             t = imagedir;
 677             while (*s && *s != PATH_SEPARATOR)
 678                 *t++ = *s++;
 679             if (t > imagedir && *(t - 1) == DIR_SEPARATOR)
 680                 ;                /* do nothing -- slash already is in place */
 681             else
 682                 *t++ = DIR_SEPARATOR;        /* put in the slash */
 683             cutoff = t - 1;        /* set cutoff */
 684             strcpy(t, name);
 685             if (access(imagedir, R_OK) == 0)
 686                 break;
 687
 688             if (*s)
 689                 s++;                /* advance source pointer */
 690             else
 691                 fatal_error(FE_INFND, 0);
 692         }
 693
 694     }
 695
 696     /*-------------------------------------------------------------*
 697      | At this point the full pathname should exist in imagedir and
 698      | cutoff should be set to the final slash.  We must now determine
 699      | whether the file name is a symbolic link or not and chase it down
 700      | if it is.  Note that we reuse ebuf for getting the link.
 701      *-------------------------------------------------------------*/
 702
 703 #ifdef HAVE_SYMLINK
 704     while ((cc = readlink(imagedir, ebuf, 512)) != -1) {
 705         ebuf[cc] = 0;
 706         s = ebuf;
 707         if (*s == DIR_SEPARATOR) {
 708             t = imagedir;
 709         }
 710         else {
 711             t = cutoff + 1;
 712         }
 713         for (;;) {
 714             if (*s == DIR_SEPARATOR)
 715                 cutoff = t;        /* mark the last slash seen */
 716             if (!(*t++ = *s++))        /* copy the character */
 717                 break;
 718         }
 719     }
 720
 721 #endif /* HAVE_SYMLINK */
 722
 723     strcpy(imagename, cutoff + 1);        /* keep the image name */
 724     *(cutoff + 1) = 0;                /* chop off the filename part */
 725 }
 726
 727 #endif
 728
 729
 730 // Yield to other apps/messages and disable user input
 731 bool wxSafeYield(wxWindow *win)
 732 {
 733    wxNode *node;
 734    for ( node = wxTopLevelWindows.GetFirst();
 735          node;
 736          node = node->GetNext() )
 737       ((wxWindow*)node->GetData())->Enable(FALSE);
 738
 739    // always enable ourselves
 740    if(win) win->Enable(true);
 741    bool rc = wxYield();
 742
 743    for ( node = wxTopLevelWindows.GetFirst();
 744          node;
 745          node = node->GetNext() )
 746       ((wxWindow*)node->GetData())->Enable(TRUE);
 747    return rc;
 748 }
 749
 750 /*
 751  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 752  * since otherwise the generic code may be pulled in unnecessarily.
 753  */
 754
 755 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 756                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 757 {
 758     wxMessageDialog dialog(parent, message, caption, style);
 759
 760     int ans = dialog.ShowModal();
 761     switch ( ans )
 762     {
 763         case wxID_OK:
 764             return wxOK;
 765             break;
 766         case wxID_YES:
 767             return wxYES;
 768             break;
 769         case wxID_NO:
 770             return wxNO;
 771             break;
 772         default:
 773         case wxID_CANCEL:
 774             return wxCANCEL;
 775             break;
 776     }
 777     return ans;
 778 }
 779
 780 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 781                         const wxString& defaultValue, wxWindow *parent,
 782                         int x, int y, bool WXUNUSED(centre) )
 783 {
 784     wxTextEntryDialog dialog(parent, message, caption, defaultValue, wxOK|wxCANCEL, wxPoint(x, y));
 785     if (dialog.ShowModal() == wxID_OK)
 786         return dialog.GetValue();
 787     else
 788         return wxString("");
 789 }
 790
 791 #ifdef __MWERKS__
 792 char *strdup(const char *s)
 793 {
 794         return strcpy( (char*) malloc( strlen( s ) + 1 ) , s ) ;
 795 }
 796
 797 int isascii( int c )
 798 {
 799         return ( c >= 0 && c < 128 ) ;
 800 }
 801 #endif
 802
 803 // ----------------------------------------------------------------------------
 804 // network and user id functions
 805 // ----------------------------------------------------------------------------
 806
 807 // Get Full RFC822 style email address
 808 bool wxGetEmailAddress(char *address, int maxSize)
 809 {
 810     wxString email = wxGetEmailAddress();
 811     if ( !email )
 812         return FALSE;
 813
 814     strncpy(address, email, maxSize - 1);
 815     address[maxSize - 1] = '\0';
 816
 817     return TRUE;
 818 }
 819
 820 wxString wxGetEmailAddress()
 821 {
 822     wxString email;
 823
 824     wxString host = wxGetHostName();
 825     if ( !!host )
 826     {
 827         wxString user = wxGetUserId();
 828         if ( !!user )
 829         {
 830             wxString email(user);
 831             email << '@' << host;
 832         }
 833     }
 834
 835     return email;
 836 }
 837
 838 wxString wxGetUserId()
 839 {
 840     static const int maxLoginLen = 256; // FIXME arbitrary number
 841
 842     wxString buf;
 843     bool ok = wxGetUserId(buf.GetWriteBuf(maxLoginLen), maxLoginLen);
 844     buf.UngetWriteBuf();
 845
 846     if ( !ok )
 847         buf.Empty();
 848
 849     return buf;
 850 }
 851
 852 wxString wxGetUserName()
 853 {
 854     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 855
 856     wxString buf;
 857     bool ok = wxGetUserName(buf.GetWriteBuf(maxUserNameLen), maxUserNameLen);
 858     buf.UngetWriteBuf();
 859
 860     if ( !ok )
 861         buf.Empty();
 862
 863     return buf;
 864 }
 865
 866 wxString wxGetHostName()
 867 {
 868     static const size_t hostnameSize = 257;
 869
 870     wxString buf;
 871     bool ok = wxGetHostName(buf.GetWriteBuf(hostnameSize), hostnameSize);
 872
 873     buf.UngetWriteBuf();
 874
 875     if ( !ok )
 876         buf.Empty();
 877
 878     return buf;
 879 }
 880