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