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 <ctype.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #if !defined(__WATCOMC__)
  38     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  39         #include <errno.h>
  40     #endif
  41 #endif
  42 #include <time.h>
  43 #ifndef __MWERKS__
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #endif
  47
  48 #ifdef __SALFORDC__
  49 #include <clib.h>
  50 #endif
  51
  52 // Pattern matching code.
  53 // Yes, this path is deliberate (for Borland compilation)
  54 #ifdef wx_mac /* MATTHEW: [5] Mac doesn't like paths with "/" */
  55 #include "glob.inc"
  56 #else
  57 #include "../common/glob.inc"
  58 #endif
  59
  60 #ifdef __WXMSW__
  61 #include "windows.h"
  62 #endif
  63
  64 #define _MAXPATHLEN 500
  65
  66 extern wxChar *wxBuffer;
  67
  68 // ----------------------------------------------------------------------------
  69 // private functions
  70 // ----------------------------------------------------------------------------
  71
  72 static wxWindow *wxFindWindowByLabel1(const wxString& title, wxWindow * parent);
  73 static wxWindow *wxFindWindowByName1 (const wxString& title, wxWindow * parent);
  74
  75 #ifdef __WXMAC__
  76 int strcasecmp(const char *str_1, const char *str_2)
  77 {
  78   register char c1, c2;
  79   do {
  80     c1 = tolower(*str_1++);
  81     c2 = tolower(*str_2++);
  82   } while ( c1 && (c1 == c2) );
  83
  84   return c1 - c2;
  85 }
  86
  87 int strncasecmp(const char *str_1, const char *str_2, size_t maxchar)
  88 {
  89
  90   register char c1, c2;
  91   while( maxchar--)
  92   {
  93     c1 = tolower(*str_1++);
  94     c2 = tolower(*str_2++);
  95
  96     if ( !c1 || c1!=c2 )
  97                   return c1 - c2;
  98
  99   } ;
 100
 101   return 0 ;
 102
 103 }
 104 #endif
 105 #ifdef __VMS__
 106 // we have no strI functions under VMS, therefore I have implemented
 107 // an inefficient but portable version: convert copies of strings to lowercase
 108 // and then use the normal comparison
 109 static void myLowerString(char *s)
 110 {
 111   while(*s){
 112     if(isalpha(*s)) *s = (char)tolower(*s);
 113     s++;
 114   }
 115 }
 116
 117 int strcasecmp(const char *str_1, const char *str_2)
 118 {
 119   char *temp1 = new char[strlen(str_1)+1];
 120   char *temp2 = new char[strlen(str_2)+1];
 121   strcpy(temp1,str_1);
 122   strcpy(temp2,str_2);
 123   myLowerString(temp1);
 124   myLowerString(temp2);
 125
 126   int result = strcmp(temp1,temp2);
 127   delete[] temp1;
 128   delete[] temp2;
 129
 130   return(result);
 131 }
 132
 133 int strncasecmp(const char *str_1, const char *str_2, size_t maxchar)
 134 {
 135   char *temp1 = new char[strlen(str_1)+1];
 136   char *temp2 = new char[strlen(str_2)+1];
 137   strcpy(temp1,str_1);
 138   strcpy(temp2,str_2);
 139   myLowerString(temp1);
 140   myLowerString(temp2);
 141
 142   int result = strncmp(temp1,temp2,maxchar);
 143   delete[] temp1;
 144   delete[] temp2;
 145
 146   return(result);
 147 }
 148 #endif
 149
 150 #ifdef __WINDOWS__
 151
 152 #ifndef __GNUWIN32__
 153 #ifndef __MWERKS__
 154 #define strcasecmp stricmp
 155 #define strncasecmp strnicmp
 156 #else
 157 #define strcasecmp _stricmp
 158 #define strncasecmp _strnicmp
 159 #endif
 160 #endif
 161
 162 #else
 163
 164 #ifdef __EMX__
 165 #define strcasecmp stricmp
 166 #define strncasecmp strnicmp
 167 #endif
 168
 169 // This declaration is missing in SunOS!
 170 // (Yes, I know it is NOT ANSI-C but its in BSD libc)
 171 #if defined(__xlC) || defined(__AIX__) || defined(__GNUG__)
 172 extern "C"
 173 {
 174   int strcasecmp (const char *, const char *);
 175   int strncasecmp (const char *, const char *, size_t);
 176 }
 177 #endif
 178 #endif  /* __WXMSW__ */
 179
 180
 181 wxChar *
 182 copystring (const wxChar *s)
 183 {
 184   if (s == NULL) s = _T("");
 185   size_t len = wxStrlen (s) + 1;
 186
 187   wxChar *news = new wxChar[len];
 188   memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 189
 190   return news;
 191 }
 192
 193 // Id generation
 194 static long wxCurrentId = 100;
 195
 196 long
 197 wxNewId (void)
 198 {
 199   return wxCurrentId++;
 200 }
 201
 202 long
 203 wxGetCurrentId(void) { return wxCurrentId; }
 204
 205 void
 206 wxRegisterId (long id)
 207 {
 208   if (id >= wxCurrentId)
 209     wxCurrentId = id + 1;
 210 }
 211
 212 void
 213 StringToFloat (wxChar *s, float *number)
 214 {
 215   if (s && *s && number)
 216     *number = (float) wxStrtod (s, (wxChar **) NULL);
 217 }
 218
 219 void
 220 StringToDouble (wxChar *s, double *number)
 221 {
 222   if (s && *s && number)
 223     *number = wxStrtod (s, (wxChar **) NULL);
 224 }
 225
 226 wxChar *
 227 FloatToString (float number, const wxChar *fmt)
 228 {
 229   static wxChar buf[256];
 230
 231 //  sprintf (buf, "%.2f", number);
 232   wxSprintf (buf, fmt, number);
 233   return buf;
 234 }
 235
 236 wxChar *
 237 DoubleToString (double number, const wxChar *fmt)
 238 {
 239   static wxChar buf[256];
 240
 241   wxSprintf (buf, fmt, number);
 242   return buf;
 243 }
 244
 245 void
 246 StringToInt (wxChar *s, int *number)
 247 {
 248   if (s && *s && number)
 249     *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 250 }
 251
 252 void
 253 StringToLong (wxChar *s, long *number)
 254 {
 255   if (s && *s && number)
 256     *number = wxStrtol (s, (wxChar **) NULL, 10);
 257 }
 258
 259 wxChar *
 260 IntToString (int number)
 261 {
 262   static wxChar buf[20];
 263
 264   wxSprintf (buf, _T("%d"), number);
 265   return buf;
 266 }
 267
 268 wxChar *
 269 LongToString (long number)
 270 {
 271   static wxChar buf[20];
 272
 273   wxSprintf (buf, _T("%ld"), number);
 274   return buf;
 275 }
 276
 277 // Array used in DecToHex conversion routine.
 278 static wxChar hexArray[] = _T("0123456789ABCDEF");
 279
 280 // Convert 2-digit hex number to decimal
 281 int wxHexToDec(const wxString& buf)
 282 {
 283   int firstDigit, secondDigit;
 284
 285   if (buf.GetChar(0) >= _T('A'))
 286     firstDigit = buf.GetChar(0) - _T('A') + 10;
 287   else
 288     firstDigit = buf.GetChar(0) - _T('0');
 289
 290   if (buf.GetChar(1) >= _T('A'))
 291     secondDigit = buf.GetChar(1) - _T('A') + 10;
 292   else
 293     secondDigit = buf.GetChar(1) - _T('0');
 294
 295   return firstDigit * 16 + secondDigit;
 296 }
 297
 298 // Convert decimal integer to 2-character hex string
 299 void wxDecToHex(int dec, wxChar *buf)
 300 {
 301   int firstDigit = (int)(dec/16.0);
 302   int secondDigit = (int)(dec - (firstDigit*16.0));
 303   buf[0] = hexArray[firstDigit];
 304   buf[1] = hexArray[secondDigit];
 305   buf[2] = 0;
 306 }
 307
 308 // Convert decimal integer to 2-character hex string
 309 wxString wxDecToHex(int dec)
 310 {
 311     wxChar buf[3];
 312     wxDecToHex(dec, buf);
 313     return wxString(buf);
 314 }
 315
 316 // Match a string INDEPENDENT OF CASE
 317 bool
 318 StringMatch (char *str1, char *str2, bool subString, bool exact)
 319 {
 320   if (str1 == NULL || str2 == NULL)
 321     return FALSE;
 322   if (str1 == str2)
 323     return TRUE;
 324
 325   if (subString)
 326     {
 327       int len1 = strlen (str1);
 328       int len2 = strlen (str2);
 329       int i;
 330
 331       // Search for str1 in str2
 332       // Slow .... but acceptable for short strings
 333       for (i = 0; i <= len2 - len1; i++)
 334         {
 335           if (strncasecmp (str1, str2 + i, len1) == 0)
 336             return TRUE;
 337         }
 338     }
 339   else if (exact)
 340     {
 341       if (strcasecmp (str1, str2) == 0)
 342         return TRUE;
 343     }
 344   else
 345     {
 346       int len1 = strlen (str1);
 347       int len2 = strlen (str2);
 348
 349       if (strncasecmp (str1, str2, wxMin (len1, len2)) == 0)
 350         return TRUE;
 351     }
 352
 353   return FALSE;
 354 }
 355
 356 // Don't synthesize KeyUp events holding down a key and producing
 357 // KeyDown events with autorepeat. On by default and always on
 358 // on in wxMSW. wxGTK version in utilsgtk.cpp.
 359 #ifndef __WXGTK__
 360 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
 361 {
 362    return TRUE;          // detectable auto-repeat is the only mode MSW supports
 363 }
 364 #endif
 365
 366 // Return the current date/time
 367 // [volatile]
 368 wxString wxNow( void )
 369 {
 370   time_t now = time((time_t *) NULL);
 371   char *date = ctime(&now);
 372   date[24] = '\0';
 373   return wxString(date);
 374 }
 375
 376 /*
 377  * Strip out any menu codes
 378  */
 379
 380 wxChar *wxStripMenuCodes (wxChar *in, wxChar *out)
 381 {
 382   if (!in)
 383     return (wxChar *) NULL;
 384
 385   if (!out)
 386     out = copystring(in);
 387
 388   wxChar *tmpOut = out;
 389
 390   while (*in)
 391     {
 392       if (*in == _T('&'))
 393         {
 394           // Check && -> &, &x -> x
 395           if (*++in == _T('&'))
 396             *out++ = *in++;
 397         }
 398       else if (*in == _T('\t'))
 399         {
 400           // Remove all stuff after \t in X mode, and let the stuff as is
 401           // in Windows mode.
 402           // Accelerators are handled in wx_item.cc for Motif, and are not
 403           // YET supported in XView
 404           break;
 405         }
 406       else
 407         *out++ = *in++;
 408     }                                // while
 409
 410   *out = _T('\0');
 411
 412   return tmpOut;
 413 }
 414
 415 wxString wxStripMenuCodes(const wxString& str)
 416 {
 417     wxChar *buf = new wxChar[str.Length() + 1];
 418     wxStripMenuCodes(WXSTRINGCAST str, buf);
 419     wxString str1(buf);
 420     delete[] buf;
 421     return str1;
 422 }
 423
 424 /*
 425  * Window search functions
 426  *
 427  */
 428
 429 /*
 430  * If parent is non-NULL, look through children for a label or title
 431  * matching the specified string. If NULL, look through all top-level windows.
 432  *
 433  */
 434
 435 wxWindow *
 436 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 437 {
 438     if (parent)
 439     {
 440         return wxFindWindowByLabel1(title, parent);
 441     }
 442     else
 443     {
 444         for ( wxWindowList::Node * node = wxTopLevelWindows.GetFirst();
 445               node;
 446               node = node->GetNext() )
 447         {
 448             wxWindow *win = node->GetData();
 449             wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 450             if (retwin)
 451                 return retwin;
 452         }                        // for()
 453
 454     }
 455     return (wxWindow *) NULL;
 456 }
 457
 458 // Recursive
 459 static wxWindow *
 460 wxFindWindowByLabel1 (const wxString& title, wxWindow * parent)
 461 {
 462     if (parent)
 463     {
 464         if (parent->GetLabel() == title)
 465             return parent;
 466     }
 467
 468     if (parent)
 469     {
 470         for ( wxWindowList::Node * node = parent->GetChildren().GetFirst();
 471               node;
 472               node = node->GetNext() )
 473         {
 474             wxWindow *win = (wxWindow *)node->GetData();
 475             wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 476             if (retwin)
 477                 return retwin;
 478         }
 479
 480     }
 481
 482     return (wxWindow *) NULL;                        // Not found
 483 }
 484
 485 /*
 486  * If parent is non-NULL, look through children for a name
 487  * matching the specified string. If NULL, look through all top-level windows.
 488  *
 489  */
 490
 491 wxWindow *
 492 wxFindWindowByName (const wxString& title, wxWindow * parent)
 493 {
 494     if (parent)
 495     {
 496         return wxFindWindowByName1 (title, parent);
 497     }
 498     else
 499     {
 500         for ( wxWindowList::Node * node = wxTopLevelWindows.GetFirst();
 501               node;
 502               node = node->GetNext() )
 503         {
 504             wxWindow *win = node->GetData();
 505             wxWindow *retwin = wxFindWindowByName1 (title, win);
 506             if (retwin)
 507                 return retwin;
 508         }
 509
 510     }
 511
 512     // Failed? Try by label instead.
 513     return wxFindWindowByLabel(title, parent);
 514 }
 515
 516 // Recursive
 517 static wxWindow *
 518 wxFindWindowByName1 (const wxString& title, wxWindow * parent)
 519 {
 520   if (parent)
 521     {
 522             if ( parent->GetName() == title )
 523                         return parent;
 524     }
 525
 526   if (parent)
 527     {
 528       for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 529         {
 530           wxWindow *win = (wxWindow *) node->Data ();
 531           wxWindow *retwin = wxFindWindowByName1 (title, win);
 532           if (retwin)
 533             return retwin;
 534         }                        // for()
 535
 536     }
 537
 538   return (wxWindow *) NULL;                        // Not found
 539
 540 }
 541
 542 // Returns menu item id or -1 if none.
 543 int
 544 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 545 {
 546   wxMenuBar *menuBar = frame->GetMenuBar ();
 547   if (!menuBar)
 548     return -1;
 549   return menuBar->FindMenuItem (menuString, itemString);
 550 }
 551
 552 /*
 553 On Fri, 21 Jul 1995, Paul Craven wrote:
 554
 555 > Is there a way to find the path of running program's executable? I can get
 556 > my home directory, and the current directory, but I don't know how to get the
 557 > executable directory.
 558 >
 559
 560 The code below (warty as it is), does what you want on most Unix,
 561 DOS, and Mac platforms (it's from the ALS Prolog main).
 562
 563 || Ken Bowen      Applied Logic Systems, Inc.         PO Box 180,
 564 ||====            Voice:  +1 (617)965-9191            Newton Centre,
 565 ||                FAX:    +1 (617)965-1636            MA  02159  USA
 566                   Email:  ken@als.com        WWW: http://www.als.com
 567 ------------------------------------------------------------------------
 568 */
 569
 570 // This code is commented out but it may be integrated with wxWin at
 571 // a later date, after testing. Thanks Ken!
 572 #if 0
 573
 574 /*--------------------------------------------------------------------*
 575  | whereami is given a filename f in the form:  whereami(argv[0])
 576  | It returns the directory in which the executable file (containing
 577  | this code [main.c] ) may be found.  A dot will be returned to indicate
 578  | the current directory.
 579  *--------------------------------------------------------------------*/
 580
 581 static void
 582 whereami(name)
 583     char *name;
 584 {
 585     register char *cutoff = NULL;        /* stifle -Wall */
 586     register char *s;
 587     register char *t;
 588     int   cc;
 589     char  ebuf[4096];
 590
 591     /*
 592      * See if the file is accessible either through the current directory
 593      * or through an absolute path.
 594      */
 595
 596     if (access(name, R_OK) == 0) {
 597
 598         /*-------------------------------------------------------------*
 599          * The file was accessible without any other work.  But the current
 600          * working directory might change on us, so if it was accessible
 601          * through the cwd, then we should get it for later accesses.
 602          *-------------------------------------------------------------*/
 603
 604         t = imagedir;
 605         if (!absolute_pathname(name)) {
 606 #if defined(DOS) || defined(__WIN32__)
 607             int   drive;
 608             char *newrbuf;
 609
 610             newrbuf = imagedir;
 611 #ifndef __DJGPP__
 612             if (*(name + 1) == ':') {
 613                 if (*name >= 'a' && *name <= 'z')
 614                     drive = (int) (*name - 'a' + 1);
 615                 else
 616                     drive = (int) (*name - 'A' + 1);
 617                 *newrbuf++ = *name;
 618                 *newrbuf++ = *(name + 1);
 619                 *newrbuf++ = DIR_SEPARATOR;
 620             }
 621             else {
 622                 drive = 0;
 623                 *newrbuf++ = DIR_SEPARATOR;
 624             }
 625             if (getcwd(newrbuf, drive) == 0) {        /* } */
 626 #else
 627             if (getcwd(newrbuf, 1024) == 0) {        /* } */
 628 #endif
 629 #else  /* DOS */
 630 #ifdef HAVE_GETWD
 631             if (getwd(imagedir) == 0) {                /* } */
 632 #else  /* !HAVE_GETWD */
 633             if (getcwd(imagedir, 1024) == 0) {
 634 #endif /* !HAVE_GETWD */
 635 #endif /* DOS */
 636                 fatal_error(FE_GETCWD, 0);
 637             }
 638             for (; *t; t++)        /* Set t to end of buffer */
 639                 ;
 640             if (*(t - 1) == DIR_SEPARATOR)        /* leave slash if already
 641                                                  * last char
 642                                                  */
 643                 cutoff = t - 1;
 644             else {
 645                 cutoff = t;        /* otherwise put one in */
 646                 *t++ = DIR_SEPARATOR;
 647             }
 648         }
 649 #if (!defined(__MAC__) && !defined(__DJGPP__) && !defined(__GO32__) && !defined(__WIN32__))
 650         else
 651                 (*t++ = DIR_SEPARATOR);
 652 #endif
 653
 654         /*-------------------------------------------------------------*
 655          * Copy the rest of the string and set the cutoff if it was not
 656          * already set.  If the first character of name is a slash, cutoff
 657          * is not presently set but will be on the first iteration of the
 658          * loop below.
 659          *-------------------------------------------------------------*/
 660
 661         for ((*name == DIR_SEPARATOR ? (s = name+1) : (s = name));;) {
 662             if (*s == DIR_SEPARATOR)
 663                         cutoff = t;
 664             if (!(*t++ = *s++))
 665                         break;
 666         }
 667
 668     }
 669     else {
 670
 671         /*-------------------------------------------------------------*
 672          * Get the path list from the environment.  If the path list is
 673          * inaccessible for any reason, leave with fatal error.
 674          *-------------------------------------------------------------*/
 675
 676 #ifdef __MAC__
 677         if ((s = getenv("Commands")) == (char *) 0)
 678 #else
 679         if ((s = getenv("PATH")) == (char *) 0)
 680 #endif
 681             fatal_error(FE_PATH, 0);
 682
 683         /*
 684          * Copy path list into ebuf and set the source pointer to the
 685          * beginning of this buffer.
 686          */
 687
 688         strcpy(ebuf, s);
 689         s = ebuf;
 690
 691         for (;;) {
 692             t = imagedir;
 693             while (*s && *s != PATH_SEPARATOR)
 694                 *t++ = *s++;
 695             if (t > imagedir && *(t - 1) == DIR_SEPARATOR)
 696                 ;                /* do nothing -- slash already is in place */
 697             else
 698                 *t++ = DIR_SEPARATOR;        /* put in the slash */
 699             cutoff = t - 1;        /* set cutoff */
 700             strcpy(t, name);
 701             if (access(imagedir, R_OK) == 0)
 702                 break;
 703
 704             if (*s)
 705                 s++;                /* advance source pointer */
 706             else
 707                 fatal_error(FE_INFND, 0);
 708         }
 709
 710     }
 711
 712     /*-------------------------------------------------------------*
 713      | At this point the full pathname should exist in imagedir and
 714      | cutoff should be set to the final slash.  We must now determine
 715      | whether the file name is a symbolic link or not and chase it down
 716      | if it is.  Note that we reuse ebuf for getting the link.
 717      *-------------------------------------------------------------*/
 718
 719 #ifdef HAVE_SYMLINK
 720     while ((cc = readlink(imagedir, ebuf, 512)) != -1) {
 721         ebuf[cc] = 0;
 722         s = ebuf;
 723         if (*s == DIR_SEPARATOR) {
 724             t = imagedir;
 725         }
 726         else {
 727             t = cutoff + 1;
 728         }
 729         for (;;) {
 730             if (*s == DIR_SEPARATOR)
 731                 cutoff = t;        /* mark the last slash seen */
 732             if (!(*t++ = *s++))        /* copy the character */
 733                 break;
 734         }
 735     }
 736
 737 #endif /* HAVE_SYMLINK */
 738
 739     strcpy(imagename, cutoff + 1);        /* keep the image name */
 740     *(cutoff + 1) = 0;                /* chop off the filename part */
 741 }
 742
 743 #endif
 744 void wxEnableTopLevelWindows(bool enable)
 745 {
 746    wxWindowList::Node *node;
 747    for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 748       node->GetData()->Enable(enable);
 749 }
 750
 751 // Yield to other apps/messages and disable user input
 752 bool wxSafeYield(wxWindow *win)
 753 {
 754    wxEnableTopLevelWindows(FALSE);
 755    // always enable ourselves
 756    if ( win )
 757       win->Enable(TRUE);
 758    bool rc = wxYield();
 759    wxEnableTopLevelWindows(TRUE);
 760    return rc;
 761 }
 762
 763 /*
 764  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 765  * since otherwise the generic code may be pulled in unnecessarily.
 766  */
 767
 768 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 769                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 770 {
 771     wxMessageDialog dialog(parent, message, caption, style);
 772
 773     int ans = dialog.ShowModal();
 774     switch ( ans )
 775     {
 776         case wxID_OK:
 777             return wxOK;
 778             break;
 779         case wxID_YES:
 780             return wxYES;
 781             break;
 782         case wxID_NO:
 783             return wxNO;
 784             break;
 785         default:
 786         case wxID_CANCEL:
 787             return wxCANCEL;
 788             break;
 789     }
 790     return ans;
 791 }
 792
 793 #if wxUSE_TEXTDLG
 794 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 795                         const wxString& defaultValue, wxWindow *parent,
 796                         int x, int y, bool WXUNUSED(centre) )
 797 {
 798     wxTextEntryDialog dialog(parent, message, caption, defaultValue, wxOK|wxCANCEL, wxPoint(x, y));
 799     if (dialog.ShowModal() == wxID_OK)
 800         return dialog.GetValue();
 801     else
 802         return wxString("");
 803 }
 804 #endif // wxUSE_TEXTDLG
 805
 806 #ifdef __MWERKS__
 807 char *strdup(const char *s)
 808 {
 809         return strcpy( (char*) malloc( strlen( s ) + 1 ) , s ) ;
 810 }
 811
 812 int isascii( int c )
 813 {
 814         return ( c >= 0 && c < 128 ) ;
 815 }
 816 #endif
 817
 818 // ----------------------------------------------------------------------------
 819 // network and user id functions
 820 // ----------------------------------------------------------------------------
 821
 822 // Get Full RFC822 style email address
 823 bool wxGetEmailAddress(wxChar *address, int maxSize)
 824 {
 825     wxString email = wxGetEmailAddress();
 826     if ( !email )
 827         return FALSE;
 828
 829     wxStrncpy(address, email, maxSize - 1);
 830     address[maxSize - 1] = _T('\0');
 831
 832     return TRUE;
 833 }
 834
 835 wxString wxGetEmailAddress()
 836 {
 837     wxString email;
 838
 839     wxString host = wxGetHostName();
 840     if ( !!host )
 841     {
 842         wxString user = wxGetUserId();
 843         if ( !!user )
 844         {
 845             wxString email(user);
 846             email << _T('@') << host;
 847         }
 848     }
 849
 850     return email;
 851 }
 852
 853 wxString wxGetUserId()
 854 {
 855     static const int maxLoginLen = 256; // FIXME arbitrary number
 856
 857     wxString buf;
 858     bool ok = wxGetUserId(buf.GetWriteBuf(maxLoginLen), maxLoginLen);
 859     buf.UngetWriteBuf();
 860
 861     if ( !ok )
 862         buf.Empty();
 863
 864     return buf;
 865 }
 866
 867 wxString wxGetUserName()
 868 {
 869     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 870
 871     wxString buf;
 872     bool ok = wxGetUserName(buf.GetWriteBuf(maxUserNameLen), maxUserNameLen);
 873     buf.UngetWriteBuf();
 874
 875     if ( !ok )
 876         buf.Empty();
 877
 878     return buf;
 879 }
 880
 881 wxString wxGetHostName()
 882 {
 883     static const size_t hostnameSize = 257;
 884
 885     wxString buf;
 886     bool ok = wxGetHostName(buf.GetWriteBuf(hostnameSize), hostnameSize);
 887
 888     buf.UngetWriteBuf();
 889
 890     if ( !ok )
 891         buf.Empty();
 892
 893     return buf;
 894 }
 895
 896 wxString wxGetFullHostName()
 897 {
 898     static const size_t hostnameSize = 257;
 899
 900     wxString buf;
 901     bool ok = wxGetFullHostName(buf.GetWriteBuf(hostnameSize), hostnameSize);
 902
 903     buf.UngetWriteBuf();
 904
 905     if ( !ok )
 906         buf.Empty();
 907
 908     return buf;
 909 }
 910