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 #if wxUSE_IOSTREAMH
  34 #include <iostream.h>
  35 #include <fstream.h>
  36 #else
  37 #include <iostream>
  38 #include <fstream>
  39 #  ifdef _MSC_VER
  40       using namespace std;
  41 #  endif
  42 #endif
  43
  44 #include <ctype.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #if !defined(__WATCOMC__)
  49 #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  50 #include <errno.h>
  51 #endif
  52 #endif
  53 #include <time.h>
  54 #ifndef __MWERKS__
  55 #include <sys/types.h>
  56 #include <sys/stat.h>
  57 #endif
  58
  59 // Pattern matching code.
  60 // Yes, this path is deliberate (for Borland compilation)
  61 #ifdef wx_mac /* MATTHEW: [5] Mac doesn't like paths with "/" */
  62 #include "glob.inc"
  63 #else
  64 #include "../common/glob.inc"
  65 #endif
  66
  67 #ifdef __WXMSW__
  68 #include "windows.h"
  69 #endif
  70
  71 #define _MAXPATHLEN 500
  72
  73 extern char *wxBuffer;
  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 #ifdef _MSC_VER
 163 #pragma warning (disable : 4245)
 164 #endif
 165
 166 #ifdef _MSC_VER
 167 #pragma warning (default : 4245)
 168 #endif
 169
 170 #else
 171 // This declaration is missing in SunOS!
 172 // (Yes, I know it is NOT ANSI-C but its in BSD libc)
 173 #if defined(__xlC) || defined(__AIX__) || defined(__GNUG__)
 174 extern "C"
 175 {
 176   int strcasecmp (const char *, const char *);
 177   int strncasecmp (const char *, const char *, size_t);
 178 }
 179 #endif
 180 #endif                          /* __WXMSW__ */
 181
 182
 183 char *
 184 copystring (const char *s)
 185 {
 186   if (s == NULL) s = "";
 187   size_t len = strlen (s) + 1;
 188
 189   char *news = new char[len];
 190   memcpy (news, s, len);        // Should be the fastest
 191
 192   return news;
 193 }
 194
 195 // Id generation
 196 static long wxCurrentId = 100;
 197
 198 long
 199 wxNewId (void)
 200 {
 201   return wxCurrentId++;
 202 }
 203
 204 long
 205 wxGetCurrentId(void) { return wxCurrentId; }
 206
 207 void
 208 wxRegisterId (long id)
 209 {
 210   if (id >= wxCurrentId)
 211     wxCurrentId = id + 1;
 212 }
 213
 214 void
 215 StringToFloat (char *s, float *number)
 216 {
 217   if (s && *s && number)
 218     *number = (float) strtod (s, (char **) NULL);
 219 }
 220
 221 void
 222 StringToDouble (char *s, double *number)
 223 {
 224   if (s && *s && number)
 225     *number = strtod (s, (char **) NULL);
 226 }
 227
 228 char *
 229 FloatToString (float number, const char *fmt)
 230 {
 231   static char buf[256];
 232
 233 //  sprintf (buf, "%.2f", number);
 234   sprintf (buf, fmt, number);
 235   return buf;
 236 }
 237
 238 char *
 239 DoubleToString (double number, const char *fmt)
 240 {
 241   static char buf[256];
 242
 243   sprintf (buf, fmt, number);
 244   return buf;
 245 }
 246
 247 void
 248 StringToInt (char *s, int *number)
 249 {
 250   if (s && *s && number)
 251     *number = (int) strtol (s, (char **) NULL, 10);
 252 }
 253
 254 void
 255 StringToLong (char *s, long *number)
 256 {
 257   if (s && *s && number)
 258     *number = strtol (s, (char **) NULL, 10);
 259 }
 260
 261 char *
 262 IntToString (int number)
 263 {
 264   static char buf[20];
 265
 266   sprintf (buf, "%d", number);
 267   return buf;
 268 }
 269
 270 char *
 271 LongToString (long number)
 272 {
 273   static char buf[20];
 274
 275   sprintf (buf, "%ld", number);
 276   return buf;
 277 }
 278
 279 // Array used in DecToHex conversion routine.
 280 static char hexArray[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B',
 281   'C', 'D', 'E', 'F' };
 282
 283 // Convert 2-digit hex number to decimal
 284 int wxHexToDec(const wxString& buf)
 285 {
 286   int firstDigit, secondDigit;
 287
 288   if (buf.GetChar(0) >= 'A')
 289     firstDigit = buf.GetChar(0) - 'A' + 10;
 290   else
 291     firstDigit = buf.GetChar(0) - '0';
 292
 293   if (buf.GetChar(1) >= 'A')
 294     secondDigit = buf.GetChar(1) - 'A' + 10;
 295   else
 296     secondDigit = buf.GetChar(1) - '0';
 297
 298   return firstDigit * 16 + secondDigit;
 299 }
 300
 301 // Convert decimal integer to 2-character hex string
 302 void wxDecToHex(int dec, char *buf)
 303 {
 304   int firstDigit = (int)(dec/16.0);
 305   int secondDigit = (int)(dec - (firstDigit*16.0));
 306   buf[0] = hexArray[firstDigit];
 307   buf[1] = hexArray[secondDigit];
 308   buf[2] = 0;
 309 }
 310
 311 // Convert decimal integer to 2-character hex string
 312 wxString wxDecToHex(int dec)
 313 {
 314     char buf[3];
 315     wxDecToHex(dec, buf);
 316     return wxString(buf);
 317 }
 318
 319 // Match a string INDEPENDENT OF CASE
 320 bool
 321 StringMatch (char *str1, char *str2, bool subString, bool exact)
 322 {
 323   if (str1 == NULL || str2 == NULL)
 324     return FALSE;
 325   if (str1 == str2)
 326     return TRUE;
 327
 328   if (subString)
 329     {
 330       int len1 = strlen (str1);
 331       int len2 = strlen (str2);
 332       int i;
 333
 334       // Search for str1 in str2
 335       // Slow .... but acceptable for short strings
 336       for (i = 0; i <= len2 - len1; i++)
 337         {
 338           if (strncasecmp (str1, str2 + i, len1) == 0)
 339             return TRUE;
 340         }
 341     }
 342   else if (exact)
 343     {
 344       if (strcasecmp (str1, str2) == 0)
 345         return TRUE;
 346     }
 347   else
 348     {
 349       int len1 = strlen (str1);
 350       int len2 = strlen (str2);
 351
 352       if (strncasecmp (str1, str2, wxMin (len1, len2)) == 0)
 353         return TRUE;
 354     }
 355
 356   return FALSE;
 357 }
 358
 359 // Return the current date/time
 360 // [volatile]
 361 wxString wxNow( void )
 362 {
 363   time_t now = time((time_t *) NULL);
 364   char *date = ctime(&now);
 365   date[24] = '\0';
 366   return wxString(date);
 367 }
 368
 369 /* Get Full RFC822 style email address */
 370 bool
 371 wxGetEmailAddress (char *address, int maxSize)
 372 {
 373   char host[65];
 374   char user[65];
 375
 376   if (wxGetHostName(host, 64) == FALSE)
 377     return FALSE;
 378   if (wxGetUserId(user, 64) == FALSE)
 379     return FALSE;
 380
 381   char tmp[130];
 382   strcpy(tmp, user);
 383   strcat(tmp, "@");
 384   strcat(tmp, host);
 385
 386   strncpy(address, tmp, maxSize - 1);
 387   address[maxSize-1] = '\0';
 388   return TRUE;
 389 }
 390
 391 /*
 392  * Strip out any menu codes
 393  */
 394
 395 char *wxStripMenuCodes (char *in, char *out)
 396 {
 397   if (!in)
 398     return (char *) NULL;
 399
 400   if (!out)
 401     out = copystring(in);
 402
 403   char *tmpOut = out;
 404
 405   while (*in)
 406     {
 407       if (*in == '&')
 408         {
 409           // Check && -> &, &x -> x
 410           if (*++in == '&')
 411             *out++ = *in++;
 412         }
 413       else if (*in == '\t')
 414         {
 415           // Remove all stuff after \t in X mode, and let the stuff as is
 416           // in Windows mode.
 417           // Accelerators are handled in wx_item.cc for Motif, and are not
 418           // YET supported in XView
 419           break;
 420         }
 421       else
 422         *out++ = *in++;
 423     }                           // while
 424
 425   *out = '\0';
 426
 427   return tmpOut;
 428 }
 429
 430 wxString wxStripMenuCodes(const wxString& str)
 431 {
 432     char *buf = new char[str.Length() + 1];
 433     wxStripMenuCodes((char*) (const char*) str, buf);
 434     wxString str1(buf);
 435     delete[] buf;
 436     return str1;
 437 }
 438
 439 /*
 440  * Window search functions
 441  *
 442  */
 443
 444 /*
 445  * If parent is non-NULL, look through children for a label or title
 446  * matching the specified string. If NULL, look through all top-level windows.
 447  *
 448  */
 449
 450 static wxWindow *wxFindWindowByLabel1 (const wxString& title, wxWindow * parent);
 451
 452 wxWindow *
 453 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 454 {
 455   if (parent)
 456     {
 457       return wxFindWindowByLabel1 (title, parent);
 458     }
 459   else
 460     {
 461       for (wxNode * node = wxTopLevelWindows.First (); node; node = node->Next ())
 462         {
 463           wxWindow *win = (wxWindow *) node->Data ();
 464           wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 465           if (retwin)
 466             return retwin;
 467         }                       // for()
 468
 469     }
 470   return (wxWindow *) NULL;
 471 }
 472
 473 // Recursive
 474 static wxWindow *
 475 wxFindWindowByLabel1 (const wxString& title, wxWindow * parent)
 476 {
 477   if (parent)
 478     {
 479       if (parent->GetLabel() == title)
 480                 return parent;
 481     }
 482
 483   if (parent)
 484     {
 485       for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 486         {
 487           wxWindow *win = (wxWindow *) node->Data ();
 488           wxWindow *retwin = wxFindWindowByLabel1 (title, win);
 489           if (retwin)
 490             return retwin;
 491         }                       // for()
 492
 493     }
 494
 495   return (wxWindow *) NULL;                     // Not found
 496
 497 }
 498
 499 /*
 500  * If parent is non-NULL, look through children for a name
 501  * matching the specified string. If NULL, look through all top-level windows.
 502  *
 503  */
 504
 505 static wxWindow *wxFindWindowByName1 (const wxString& title, wxWindow * parent);
 506
 507 wxWindow *
 508 wxFindWindowByName (const wxString& title, wxWindow * parent)
 509 {
 510   if (parent)
 511     {
 512       return wxFindWindowByName1 (title, parent);
 513     }
 514   else
 515     {
 516       for (wxNode * node = wxTopLevelWindows.First (); node; node = node->Next ())
 517         {
 518           wxWindow *win = (wxWindow *) node->Data ();
 519           wxWindow *retwin = wxFindWindowByName1 (title, win);
 520           if (retwin)
 521             return retwin;
 522         }                       // for()
 523
 524     }
 525   // Failed? Try by label instead.
 526   return wxFindWindowByLabel(title, parent);
 527 }
 528
 529 // Recursive
 530 static wxWindow *
 531 wxFindWindowByName1 (const wxString& title, wxWindow * parent)
 532 {
 533   if (parent)
 534     {
 535         if ( parent->GetName() == title )
 536                         return parent;
 537     }
 538
 539   if (parent)
 540     {
 541       for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 542         {
 543           wxWindow *win = (wxWindow *) node->Data ();
 544           wxWindow *retwin = wxFindWindowByName1 (title, win);
 545           if (retwin)
 546             return retwin;
 547         }                       // for()
 548
 549     }
 550
 551   return (wxWindow *) NULL;                     // Not found
 552
 553 }
 554
 555 // Returns menu item id or -1 if none.
 556 int
 557 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 558 {
 559   wxMenuBar *menuBar = frame->GetMenuBar ();
 560   if (!menuBar)
 561     return -1;
 562   return menuBar->FindMenuItem (menuString, itemString);
 563 }
 564
 565 /*
 566  * wxDebugStreamBuf
 567  */
 568 #if !defined(_WINDLL)
 569
 570 wxDebugStreamBuf::wxDebugStreamBuf(void)
 571 {
 572         // <iostream> usage doesn't need this, and i have no idea how to simulate it.
 573 #if wxUSE_IOSTREAMH
 574         if (allocate())
 575           setp(base(),ebuf());
 576 #endif
 577 }
 578
 579 int wxDebugStreamBuf::overflow(int WXUNUSED(i))
 580 {
 581   int len = pptr() - pbase();
 582   char *txt = new char[len+1];
 583   strncpy(txt, pbase(), len);
 584   txt[len] = '\0';
 585 #ifdef __WXMSW__
 586   OutputDebugString((LPCSTR)txt);
 587 #else
 588   fprintf(stderr, txt);
 589 #endif
 590   setp(pbase(), epptr());
 591   delete[] txt;
 592   return EOF;
 593 }
 594
 595 int wxDebugStreamBuf::sync(void)
 596 {
 597   int len = pptr() - pbase();
 598   char *txt = new char[len+1];
 599   strncpy(txt, pbase(), len);
 600   txt[len] = '\0';
 601 #ifdef __WXMSW__
 602   OutputDebugString((LPCSTR)txt);
 603 #else
 604   fprintf(stderr, txt);
 605 #endif
 606   setp(pbase(), epptr());
 607   delete[] txt;
 608   return 0;
 609 }
 610
 611 #endif
 612
 613 /*
 614 On Fri, 21 Jul 1995, Paul Craven wrote:
 615
 616 > Is there a way to find the path of running program's executable? I can get
 617 > my home directory, and the current directory, but I don't know how to get the
 618 > executable directory.
 619 >
 620
 621 The code below (warty as it is), does what you want on most Unix,
 622 DOS, and Mac platforms (it's from the ALS Prolog main).
 623
 624 || Ken Bowen      Applied Logic Systems, Inc.         PO Box 180,
 625 ||====            Voice:  +1 (617)965-9191            Newton Centre,
 626 ||                FAX:    +1 (617)965-1636            MA  02159  USA
 627                   Email:  ken@als.com        WWW: http://www.als.com
 628 ------------------------------------------------------------------------
 629 */
 630
 631 // This code is commented out but it may be integrated with wxWin at
 632 // a later date, after testing. Thanks Ken!
 633 #if 0
 634
 635 /*--------------------------------------------------------------------*
 636  | whereami is given a filename f in the form:  whereami(argv[0])
 637  | It returns the directory in which the executable file (containing
 638  | this code [main.c] ) may be found.  A dot will be returned to indicate
 639  | the current directory.
 640  *--------------------------------------------------------------------*/
 641
 642 static void
 643 whereami(name)
 644     char *name;
 645 {
 646     register char *cutoff = NULL;       /* stifle -Wall */
 647     register char *s;
 648     register char *t;
 649     int   cc;
 650     char  ebuf[4096];
 651
 652     /*
 653      * See if the file is accessible either through the current directory
 654      * or through an absolute path.
 655      */
 656
 657     if (access(name, R_OK) == 0) {
 658
 659         /*-------------------------------------------------------------*
 660          * The file was accessible without any other work.  But the current
 661          * working directory might change on us, so if it was accessible
 662          * through the cwd, then we should get it for later accesses.
 663          *-------------------------------------------------------------*/
 664
 665         t = imagedir;
 666         if (!absolute_pathname(name)) {
 667 #if defined(DOS) || defined(__WIN32__)
 668             int   drive;
 669             char *newrbuf;
 670
 671             newrbuf = imagedir;
 672 #ifndef __DJGPP__
 673             if (*(name + 1) == ':') {
 674                 if (*name >= 'a' && *name <= 'z')
 675                     drive = (int) (*name - 'a' + 1);
 676                 else
 677                     drive = (int) (*name - 'A' + 1);
 678                 *newrbuf++ = *name;
 679                 *newrbuf++ = *(name + 1);
 680                 *newrbuf++ = DIR_SEPARATOR;
 681             }
 682             else {
 683                 drive = 0;
 684                 *newrbuf++ = DIR_SEPARATOR;
 685             }
 686             if (getcwd(newrbuf, drive) == 0) {  /* } */
 687 #else
 688             if (getcwd(newrbuf, 1024) == 0) {   /* } */
 689 #endif
 690 #else  /* DOS */
 691 #ifdef HAVE_GETWD
 692             if (getwd(imagedir) == 0) {         /* } */
 693 #else  /* !HAVE_GETWD */
 694             if (getcwd(imagedir, 1024) == 0) {
 695 #endif /* !HAVE_GETWD */
 696 #endif /* DOS */
 697                 fatal_error(FE_GETCWD, 0);
 698             }
 699             for (; *t; t++)     /* Set t to end of buffer */
 700                 ;
 701             if (*(t - 1) == DIR_SEPARATOR)      /* leave slash if already
 702                                                  * last char
 703                                                  */
 704                 cutoff = t - 1;
 705             else {
 706                 cutoff = t;     /* otherwise put one in */
 707                 *t++ = DIR_SEPARATOR;
 708             }
 709         }
 710 #if (!defined(__MAC__) && !defined(__DJGPP__) && !defined(__GO32__) && !defined(__WIN32__))
 711         else
 712                 (*t++ = DIR_SEPARATOR);
 713 #endif
 714
 715         /*-------------------------------------------------------------*
 716          * Copy the rest of the string and set the cutoff if it was not
 717          * already set.  If the first character of name is a slash, cutoff
 718          * is not presently set but will be on the first iteration of the
 719          * loop below.
 720          *-------------------------------------------------------------*/
 721
 722         for ((*name == DIR_SEPARATOR ? (s = name+1) : (s = name));;) {
 723             if (*s == DIR_SEPARATOR)
 724                         cutoff = t;
 725             if (!(*t++ = *s++))
 726                         break;
 727         }
 728
 729     }
 730     else {
 731
 732         /*-------------------------------------------------------------*
 733          * Get the path list from the environment.  If the path list is
 734          * inaccessible for any reason, leave with fatal error.
 735          *-------------------------------------------------------------*/
 736
 737 #ifdef __MAC__
 738         if ((s = getenv("Commands")) == (char *) 0)
 739 #else
 740         if ((s = getenv("PATH")) == (char *) 0)
 741 #endif
 742             fatal_error(FE_PATH, 0);
 743
 744         /*
 745          * Copy path list into ebuf and set the source pointer to the
 746          * beginning of this buffer.
 747          */
 748
 749         strcpy(ebuf, s);
 750         s = ebuf;
 751
 752         for (;;) {
 753             t = imagedir;
 754             while (*s && *s != PATH_SEPARATOR)
 755                 *t++ = *s++;
 756             if (t > imagedir && *(t - 1) == DIR_SEPARATOR)
 757                 ;               /* do nothing -- slash already is in place */
 758             else
 759                 *t++ = DIR_SEPARATOR;   /* put in the slash */
 760             cutoff = t - 1;     /* set cutoff */
 761             strcpy(t, name);
 762             if (access(imagedir, R_OK) == 0)
 763                 break;
 764
 765             if (*s)
 766                 s++;            /* advance source pointer */
 767             else
 768                 fatal_error(FE_INFND, 0);
 769         }
 770
 771     }
 772
 773     /*-------------------------------------------------------------*
 774      | At this point the full pathname should exist in imagedir and
 775      | cutoff should be set to the final slash.  We must now determine
 776      | whether the file name is a symbolic link or not and chase it down
 777      | if it is.  Note that we reuse ebuf for getting the link.
 778      *-------------------------------------------------------------*/
 779
 780 #ifdef HAVE_SYMLINK
 781     while ((cc = readlink(imagedir, ebuf, 512)) != -1) {
 782         ebuf[cc] = 0;
 783         s = ebuf;
 784         if (*s == DIR_SEPARATOR) {
 785             t = imagedir;
 786         }
 787         else {
 788             t = cutoff + 1;
 789         }
 790         for (;;) {
 791             if (*s == DIR_SEPARATOR)
 792                 cutoff = t;     /* mark the last slash seen */
 793             if (!(*t++ = *s++)) /* copy the character */
 794                 break;
 795         }
 796     }
 797
 798 #endif /* HAVE_SYMLINK */
 799
 800     strcpy(imagename, cutoff + 1);      /* keep the image name */
 801     *(cutoff + 1) = 0;          /* chop off the filename part */
 802 }
 803
 804 #endif
 805
 806 /*
 807  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 808  * since otherwise the generic code may be pulled in unnecessarily.
 809  */
 810
 811 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 812                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 813 {
 814     wxMessageDialog dialog(parent, message, caption, style);
 815
 816     int ans = dialog.ShowModal();
 817     switch ( ans )
 818     {
 819         case wxID_OK:
 820             return wxOK;
 821             break;
 822         case wxID_YES:
 823             return wxYES;
 824             break;
 825         case wxID_NO:
 826             return wxNO;
 827             break;
 828         default:
 829         case wxID_CANCEL:
 830             return wxCANCEL;
 831             break;
 832     }
 833     return ans;
 834 }
 835
 836 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 837                         const wxString& defaultValue, wxWindow *parent,
 838                         int x, int y, bool WXUNUSED(centre) )
 839 {
 840     wxTextEntryDialog dialog(parent, message, caption, defaultValue, wxOK|wxCANCEL, wxPoint(x, y));
 841     if (dialog.ShowModal() == wxID_OK)
 842         return dialog.GetValue();
 843     else
 844         return wxString("");
 845 }
 846
 847 #ifdef __MWERKS__
 848 char *strdup(const char *s)
 849 {
 850         return strcpy( (char*) malloc( strlen( s ) + 1 ) , s ) ;
 851 }
 852
 853 int     isascii( int c )
 854 {
 855         return ( c >= 0 && c < 128 ) ;
 856 }
 857 #endif