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 licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "utils.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/defs.h"
  33     #include "wx/string.h"
  34     #include "wx/utils.h"
  35     #include "wx/intl.h"
  36     #include "wx/log.h"
  37
  38     #if wxUSE_GUI
  39         #include "wx/app.h"
  40         #include "wx/window.h"
  41         #include "wx/frame.h"
  42         #include "wx/menu.h"
  43         #include "wx/msgdlg.h"
  44         #include "wx/textdlg.h"
  45         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  46         #if wxUSE_ACCEL
  47             #include "wx/menuitem.h"
  48             #include "wx/accel.h"
  49         #endif // wxUSE_ACCEL
  50     #endif // wxUSE_GUI
  51 #endif // WX_PRECOMP
  52
  53 #ifndef __WIN16__
  54 #include "wx/process.h"
  55 #include "wx/txtstrm.h"
  56 #endif
  57
  58 #include <ctype.h>
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62
  63 #if !defined(__WATCOMC__)
  64     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  65         #include <errno.h>
  66     #endif
  67 #endif
  68
  69 #if wxUSE_GUI
  70     #include "wx/colordlg.h"
  71     #include "wx/fontdlg.h"
  72     #include "wx/notebook.h"
  73     #include "wx/frame.h"
  74     #include "wx/statusbr.h"
  75 #endif // wxUSE_GUI
  76
  77 #include <time.h>
  78
  79 #ifndef __MWERKS__
  80     #include <sys/types.h>
  81     #include <sys/stat.h>
  82 #endif
  83
  84 #ifdef __SALFORDC__
  85     #include <clib.h>
  86 #endif
  87
  88 #ifdef __WXMSW__
  89     #include "wx/msw/private.h"
  90 #endif
  91
  92 // ----------------------------------------------------------------------------
  93 // common data
  94 // ----------------------------------------------------------------------------
  95
  96 #if WXWIN_COMPATIBILITY_2_2
  97     const wxChar *wxInternalErrorStr = wxT("wxWindows Internal Error");
  98     const wxChar *wxFatalErrorStr = wxT("wxWindows Fatal Error");
  99 #endif // WXWIN_COMPATIBILITY_2_2
 100
 101 // ============================================================================
 102 // implementation
 103 // ============================================================================
 104
 105 wxChar *
 106 copystring (const wxChar *s)
 107 {
 108   if (s == NULL) s = wxT("");
 109   size_t len = wxStrlen (s) + 1;
 110
 111   wxChar *news = new wxChar[len];
 112   memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 113
 114   return news;
 115 }
 116
 117 // Id generation
 118 static long wxCurrentId = 100;
 119
 120 long
 121 wxNewId (void)
 122 {
 123   return wxCurrentId++;
 124 }
 125
 126 long
 127 wxGetCurrentId(void) { return wxCurrentId; }
 128
 129 void
 130 wxRegisterId (long id)
 131 {
 132   if (id >= wxCurrentId)
 133     wxCurrentId = id + 1;
 134 }
 135
 136 // ----------------------------------------------------------------------------
 137 // String <-> Number conversions (deprecated)
 138 // ----------------------------------------------------------------------------
 139
 140 #if WXWIN_COMPATIBILITY_2_4
 141
 142 WXDLLEXPORT_DATA(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 143 WXDLLEXPORT_DATA(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 144
 145 void
 146 StringToFloat (const wxChar *s, float *number)
 147 {
 148   if (s && *s && number)
 149     *number = (float) wxStrtod (s, (wxChar **) NULL);
 150 }
 151
 152 void
 153 StringToDouble (const wxChar *s, double *number)
 154 {
 155   if (s && *s && number)
 156     *number = wxStrtod (s, (wxChar **) NULL);
 157 }
 158
 159 wxChar *
 160 FloatToString (float number, const wxChar *fmt)
 161 {
 162   static wxChar buf[256];
 163
 164   wxSprintf (buf, fmt, number);
 165   return buf;
 166 }
 167
 168 wxChar *
 169 DoubleToString (double number, const wxChar *fmt)
 170 {
 171   static wxChar buf[256];
 172
 173   wxSprintf (buf, fmt, number);
 174   return buf;
 175 }
 176
 177 void
 178 StringToInt (const wxChar *s, int *number)
 179 {
 180   if (s && *s && number)
 181     *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 182 }
 183
 184 void
 185 StringToLong (const wxChar *s, long *number)
 186 {
 187   if (s && *s && number)
 188     *number = wxStrtol (s, (wxChar **) NULL, 10);
 189 }
 190
 191 wxChar *
 192 IntToString (int number)
 193 {
 194   static wxChar buf[20];
 195
 196   wxSprintf (buf, wxT("%d"), number);
 197   return buf;
 198 }
 199
 200 wxChar *
 201 LongToString (long number)
 202 {
 203   static wxChar buf[20];
 204
 205   wxSprintf (buf, wxT("%ld"), number);
 206   return buf;
 207 }
 208
 209 #endif // WXWIN_COMPATIBILITY_2_4
 210
 211 // Array used in DecToHex conversion routine.
 212 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 213
 214 // Convert 2-digit hex number to decimal
 215 int wxHexToDec(const wxString& buf)
 216 {
 217   int firstDigit, secondDigit;
 218
 219   if (buf.GetChar(0) >= wxT('A'))
 220     firstDigit = buf.GetChar(0) - wxT('A') + 10;
 221   else
 222     firstDigit = buf.GetChar(0) - wxT('0');
 223
 224   if (buf.GetChar(1) >= wxT('A'))
 225     secondDigit = buf.GetChar(1) - wxT('A') + 10;
 226   else
 227     secondDigit = buf.GetChar(1) - wxT('0');
 228
 229   return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 230 }
 231
 232 // Convert decimal integer to 2-character hex string
 233 void wxDecToHex(int dec, wxChar *buf)
 234 {
 235   int firstDigit = (int)(dec/16.0);
 236   int secondDigit = (int)(dec - (firstDigit*16.0));
 237   buf[0] = hexArray[firstDigit];
 238   buf[1] = hexArray[secondDigit];
 239   buf[2] = 0;
 240 }
 241
 242 // Convert decimal integer to 2-character hex string
 243 wxString wxDecToHex(int dec)
 244 {
 245     wxChar buf[3];
 246     wxDecToHex(dec, buf);
 247     return wxString(buf);
 248 }
 249
 250 #if WXWIN_COMPATIBILITY_2
 251 bool
 252 StringMatch (const wxChar *str1, const wxChar *str2, bool subString, bool exact)
 253 {
 254   if (str1 == NULL || str2 == NULL)
 255     return FALSE;
 256   if (str1 == str2)
 257     return TRUE;
 258
 259   if (subString)
 260     {
 261       int len1 = wxStrlen (str1);
 262       int len2 = wxStrlen (str2);
 263       int i;
 264
 265       // Search for str1 in str2
 266       // Slow .... but acceptable for short strings
 267       for (i = 0; i <= len2 - len1; i++)
 268         {
 269           if (wxStrnicmp (str1, str2 + i, len1) == 0)
 270             return TRUE;
 271         }
 272     }
 273   else if (exact)
 274     {
 275       if (wxStricmp (str1, str2) == 0)
 276         return TRUE;
 277     }
 278   else
 279     {
 280       int len1 = wxStrlen (str1);
 281       int len2 = wxStrlen (str2);
 282
 283       if (wxStrnicmp (str1, str2, wxMin (len1, len2)) == 0)
 284         return TRUE;
 285     }
 286
 287   return FALSE;
 288 }
 289 #endif
 290
 291 // Return the current date/time
 292 // [volatile]
 293 wxString wxNow()
 294 {
 295     time_t now = time((time_t *) NULL);
 296     char *date = ctime(&now);
 297     date[24] = '\0';
 298     return wxString::FromAscii(date);
 299 }
 300
 301 #if wxUSE_GUI
 302
 303 #if wxUSE_MENUS
 304
 305 // ----------------------------------------------------------------------------
 306 // Menu accelerators related functions
 307 // ----------------------------------------------------------------------------
 308
 309 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 310 {
 311     wxString s = wxMenuItem::GetLabelFromText(in);
 312     if ( out )
 313     {
 314         // go smash their buffer if it's not big enough - I love char * params
 315         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 316     }
 317     else
 318     {
 319         out = copystring(s);
 320     }
 321
 322     return out;
 323 }
 324
 325 wxString wxStripMenuCodes(const wxString& in)
 326 {
 327     wxString out;
 328
 329     size_t len = in.length();
 330     out.reserve(len);
 331
 332     for ( size_t n = 0; n < len; n++ )
 333     {
 334         wxChar ch = in[n];
 335         if ( ch == _T('&') )
 336         {
 337             // skip it, it is used to introduce the accel char (or to quote
 338             // itself in which case it should still be skipped): note that it
 339             // can't be the last character of the string
 340             if ( ++n == len )
 341             {
 342                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 343             }
 344             else
 345             {
 346                 // use the next char instead
 347                 ch = in[n];
 348             }
 349         }
 350         else if ( ch == _T('\t') )
 351         {
 352             // everything after TAB is accel string, exit the loop
 353             break;
 354         }
 355
 356         out += ch;
 357     }
 358
 359     return out;
 360 }
 361
 362 #endif // wxUSE_MENUS
 363
 364 // ----------------------------------------------------------------------------
 365 // Window search functions
 366 // ----------------------------------------------------------------------------
 367
 368 /*
 369  * If parent is non-NULL, look through children for a label or title
 370  * matching the specified string. If NULL, look through all top-level windows.
 371  *
 372  */
 373
 374 wxWindow *
 375 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 376 {
 377     return wxWindow::FindWindowByLabel( title, parent );
 378 }
 379
 380
 381 /*
 382  * If parent is non-NULL, look through children for a name
 383  * matching the specified string. If NULL, look through all top-level windows.
 384  *
 385  */
 386
 387 wxWindow *
 388 wxFindWindowByName (const wxString& name, wxWindow * parent)
 389 {
 390     return wxWindow::FindWindowByName( name, parent );
 391 }
 392
 393 // Returns menu item id or -1 if none.
 394 int
 395 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 396 {
 397 #if wxUSE_MENUS
 398   wxMenuBar *menuBar = frame->GetMenuBar ();
 399   if ( menuBar )
 400       return menuBar->FindMenuItem (menuString, itemString);
 401 #endif // wxUSE_MENUS
 402
 403   return -1;
 404 }
 405
 406 // Try to find the deepest child that contains 'pt'.
 407 // We go backwards, to try to allow for controls that are spacially
 408 // within other controls, but are still siblings (e.g. buttons within
 409 // static boxes). Static boxes are likely to be created _before_ controls
 410 // that sit inside them.
 411 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 412 {
 413     if (!win->IsShown())
 414         return NULL;
 415
 416     // Hack for wxNotebook case: at least in wxGTK, all pages
 417     // claim to be shown, so we must only deal with the selected one.
 418 #if wxUSE_NOTEBOOK
 419     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 420     {
 421       wxNotebook* nb = (wxNotebook*) win;
 422       int sel = nb->GetSelection();
 423       if (sel >= 0)
 424       {
 425         wxWindow* child = nb->GetPage(sel);
 426         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 427         if (foundWin)
 428            return foundWin;
 429       }
 430     }
 431 #endif
 432
 433     /* Doesn't work
 434     // Frame case
 435     else if (win->IsKindOf(CLASSINFO(wxFrame)))
 436     {
 437       // Pseudo-children that may not be mentioned in the child list
 438       wxWindowList extraChildren;
 439       wxFrame* frame = (wxFrame*) win;
 440       if (frame->GetStatusBar())
 441         extraChildren.Append(frame->GetStatusBar());
 442       if (frame->GetToolBar())
 443         extraChildren.Append(frame->GetToolBar());
 444
 445       wxNode* node = extraChildren.GetFirst();
 446       while (node)
 447       {
 448           wxWindow* child = (wxWindow*) node->GetData();
 449           wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 450           if (foundWin)
 451             return foundWin;
 452           node = node->Next();
 453       }
 454     }
 455     */
 456
 457     wxWindowList::Node  *node = win->GetChildren().GetLast();
 458     while (node)
 459     {
 460         wxWindow* child = node->GetData();
 461         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 462         if (foundWin)
 463           return foundWin;
 464         node = node->GetPrevious();
 465     }
 466
 467     wxPoint pos = win->GetPosition();
 468     wxSize sz = win->GetSize();
 469     if (win->GetParent())
 470     {
 471         pos = win->GetParent()->ClientToScreen(pos);
 472     }
 473
 474     wxRect rect(pos, sz);
 475     if (rect.Inside(pt))
 476         return win;
 477     else
 478         return NULL;
 479 }
 480
 481 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 482 {
 483     // Go backwards through the list since windows
 484     // on top are likely to have been appended most
 485     // recently.
 486     wxWindowList::Node  *node = wxTopLevelWindows.GetLast();
 487     while (node)
 488     {
 489         wxWindow* win = node->GetData();
 490         wxWindow* found = wxFindWindowAtPoint(win, pt);
 491         if (found)
 492             return found;
 493         node = node->GetPrevious();
 494     }
 495     return NULL;
 496 }
 497
 498 #endif // wxUSE_GUI
 499
 500 /*
 501 On Fri, 21 Jul 1995, Paul Craven wrote:
 502
 503 > Is there a way to find the path of running program's executable? I can get
 504 > my home directory, and the current directory, but I don't know how to get the
 505 > executable directory.
 506 >
 507
 508 The code below (warty as it is), does what you want on most Unix,
 509 DOS, and Mac platforms (it's from the ALS Prolog main).
 510
 511 || Ken Bowen      Applied Logic Systems, Inc.         PO Box 180,
 512 ||====            Voice:  +1 (617)965-9191            Newton Centre,
 513 ||                FAX:    +1 (617)965-1636            MA  02159  USA
 514                   Email:  ken@als.com        WWW: http://www.als.com
 515 ------------------------------------------------------------------------
 516 */
 517
 518 // This code is commented out but it may be integrated with wxWin at
 519 // a later date, after testing. Thanks Ken!
 520 #if 0
 521
 522 /*--------------------------------------------------------------------*
 523  | whereami is given a filename f in the form:  whereami(argv[0])
 524  | It returns the directory in which the executable file (containing
 525  | this code [main.c] ) may be found.  A dot will be returned to indicate
 526  | the current directory.
 527  *--------------------------------------------------------------------*/
 528
 529 static void
 530 whereami(name)
 531     char *name;
 532 {
 533     register char *cutoff = NULL;        /* stifle -Wall */
 534     register char *s;
 535     register char *t;
 536     int   cc;
 537     char  ebuf[4096];
 538
 539     /*
 540      * See if the file is accessible either through the current directory
 541      * or through an absolute path.
 542      */
 543
 544     if (access(name, R_OK) == 0) {
 545
 546         /*-------------------------------------------------------------*
 547          * The file was accessible without any other work.  But the current
 548          * working directory might change on us, so if it was accessible
 549          * through the cwd, then we should get it for later accesses.
 550          *-------------------------------------------------------------*/
 551
 552         t = imagedir;
 553         if (!absolute_pathname(name)) {
 554 #if defined(__DOS__) || defined(__WIN32__)
 555             int   drive;
 556             char *newrbuf;
 557
 558             newrbuf = imagedir;
 559 #ifndef __DJGPP__
 560             if (*(name + 1) == ':') {
 561                 if (*name >= 'a' && *name <= 'z')
 562                     drive = (int) (*name - 'a' + 1);
 563                 else
 564                     drive = (int) (*name - 'A' + 1);
 565                 *newrbuf++ = *name;
 566                 *newrbuf++ = *(name + 1);
 567                 *newrbuf++ = DIR_SEPARATOR;
 568             }
 569             else {
 570                 drive = 0;
 571                 *newrbuf++ = DIR_SEPARATOR;
 572             }
 573             if (getcwd(newrbuf, drive) == 0) {        /* } */
 574 #else
 575             if (getcwd(newrbuf, 1024) == 0) {        /* } */
 576 #endif
 577 #else  /* DOS */
 578 #ifdef HAVE_GETWD
 579             if (getwd(imagedir) == 0) {                /* } */
 580 #else  /* !HAVE_GETWD */
 581             if (getcwd(imagedir, 1024) == 0) {
 582 #endif /* !HAVE_GETWD */
 583 #endif /* DOS */
 584                 fatal_error(FE_GETCWD, 0);
 585             }
 586             for (; *t; t++)        /* Set t to end of buffer */
 587                 ;
 588             if (*(t - 1) == DIR_SEPARATOR)        /* leave slash if already
 589                                                  * last char
 590                                                  */
 591                 cutoff = t - 1;
 592             else {
 593                 cutoff = t;        /* otherwise put one in */
 594                 *t++ = DIR_SEPARATOR;
 595             }
 596         }
 597 #if (!defined(__MAC__) && !defined(__DJGPP__) && !defined(__GO32__) && !defined(__WIN32__))
 598         else
 599                 (*t++ = DIR_SEPARATOR);
 600 #endif
 601
 602         /*-------------------------------------------------------------*
 603          * Copy the rest of the string and set the cutoff if it was not
 604          * already set.  If the first character of name is a slash, cutoff
 605          * is not presently set but will be on the first iteration of the
 606          * loop below.
 607          *-------------------------------------------------------------*/
 608
 609         for ((*name == DIR_SEPARATOR ? (s = name+1) : (s = name));;) {
 610             if (*s == DIR_SEPARATOR)
 611                         cutoff = t;
 612             if (!(*t++ = *s++))
 613                         break;
 614         }
 615
 616     }
 617     else {
 618
 619         /*-------------------------------------------------------------*
 620          * Get the path list from the environment.  If the path list is
 621          * inaccessible for any reason, leave with fatal error.
 622          *-------------------------------------------------------------*/
 623
 624 #ifdef __MAC__
 625         if ((s = getenv("Commands")) == (char *) 0)
 626 #else
 627         if ((s = getenv("PATH")) == (char *) 0)
 628 #endif
 629             fatal_error(FE_PATH, 0);
 630
 631         /*
 632          * Copy path list into ebuf and set the source pointer to the
 633          * beginning of this buffer.
 634          */
 635
 636         strcpy(ebuf, s);
 637         s = ebuf;
 638
 639         for (;;) {
 640             t = imagedir;
 641             while (*s && *s != PATH_SEPARATOR)
 642                 *t++ = *s++;
 643             if (t > imagedir && *(t - 1) == DIR_SEPARATOR)
 644                 ;                /* do nothing -- slash already is in place */
 645             else
 646                 *t++ = DIR_SEPARATOR;        /* put in the slash */
 647             cutoff = t - 1;        /* set cutoff */
 648             strcpy(t, name);
 649             if (access(imagedir, R_OK) == 0)
 650                 break;
 651
 652             if (*s)
 653                 s++;                /* advance source pointer */
 654             else
 655                 fatal_error(FE_INFND, 0);
 656         }
 657
 658     }
 659
 660     /*-------------------------------------------------------------*
 661      | At this point the full pathname should exist in imagedir and
 662      | cutoff should be set to the final slash.  We must now determine
 663      | whether the file name is a symbolic link or not and chase it down
 664      | if it is.  Note that we reuse ebuf for getting the link.
 665      *-------------------------------------------------------------*/
 666
 667 #ifdef HAVE_SYMLINK
 668     while ((cc = readlink(imagedir, ebuf, 512)) != -1) {
 669         ebuf[cc] = 0;
 670         s = ebuf;
 671         if (*s == DIR_SEPARATOR) {
 672             t = imagedir;
 673         }
 674         else {
 675             t = cutoff + 1;
 676         }
 677         for (;;) {
 678             if (*s == DIR_SEPARATOR)
 679                 cutoff = t;        /* mark the last slash seen */
 680             if (!(*t++ = *s++))        /* copy the character */
 681                 break;
 682         }
 683     }
 684
 685 #endif /* HAVE_SYMLINK */
 686
 687     strcpy(imagename, cutoff + 1);        /* keep the image name */
 688     *(cutoff + 1) = 0;                /* chop off the filename part */
 689 }
 690
 691 #endif
 692
 693 #if wxUSE_GUI
 694
 695 // ----------------------------------------------------------------------------
 696 // GUI helpers
 697 // ----------------------------------------------------------------------------
 698
 699 /*
 700  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 701  * since otherwise the generic code may be pulled in unnecessarily.
 702  */
 703
 704 #if wxUSE_MSGDLG
 705
 706 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 707                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 708 {
 709     wxMessageDialog dialog(parent, message, caption, style);
 710
 711     int ans = dialog.ShowModal();
 712     switch ( ans )
 713     {
 714         case wxID_OK:
 715             return wxOK;
 716         case wxID_YES:
 717             return wxYES;
 718         case wxID_NO:
 719             return wxNO;
 720         case wxID_CANCEL:
 721             return wxCANCEL;
 722     }
 723
 724     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 725
 726     return wxCANCEL;
 727 }
 728
 729 #endif // wxUSE_MSGDLG
 730
 731 #if wxUSE_TEXTDLG
 732
 733 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 734                         const wxString& defaultValue, wxWindow *parent,
 735                         int x, int y, bool WXUNUSED(centre) )
 736 {
 737     wxString str;
 738     wxTextEntryDialog dialog(parent, message, caption, defaultValue, wxOK|wxCANCEL, wxPoint(x, y));
 739     if (dialog.ShowModal() == wxID_OK)
 740     {
 741         str = dialog.GetValue();
 742     }
 743
 744     return str;
 745 }
 746
 747 wxString wxGetPasswordFromUser(const wxString& message,
 748                                const wxString& caption,
 749                                const wxString& defaultValue,
 750                                wxWindow *parent)
 751 {
 752     wxString str;
 753     wxTextEntryDialog dialog(parent, message, caption, defaultValue,
 754                              wxOK | wxCANCEL | wxTE_PASSWORD);
 755     if ( dialog.ShowModal() == wxID_OK )
 756     {
 757         str = dialog.GetValue();
 758     }
 759
 760     return str;
 761 }
 762
 763 #endif // wxUSE_TEXTDLG
 764
 765 #if wxUSE_COLOURDLG
 766
 767 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit)
 768 {
 769     wxColourData data;
 770     data.SetChooseFull(TRUE);
 771     if ( colInit.Ok() )
 772     {
 773         data.SetColour((wxColour &)colInit); // const_cast
 774     }
 775
 776     wxColour colRet;
 777     wxColourDialog dialog(parent, &data);
 778     if ( dialog.ShowModal() == wxID_OK )
 779     {
 780         colRet = dialog.GetColourData().GetColour();
 781     }
 782     //else: leave it invalid
 783
 784     return colRet;
 785 }
 786
 787 #endif // wxUSE_COLOURDLG
 788
 789 #if wxUSE_FONTDLG
 790
 791 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit)
 792 {
 793     wxFontData data;
 794     if ( fontInit.Ok() )
 795     {
 796         data.SetInitialFont(fontInit);
 797     }
 798
 799     wxFont fontRet;
 800     wxFontDialog dialog(parent, data);
 801     if ( dialog.ShowModal() == wxID_OK )
 802     {
 803         fontRet = dialog.GetFontData().GetChosenFont();
 804     }
 805     //else: leave it invalid
 806
 807     return fontRet;
 808 }
 809
 810 #endif // wxUSE_FONTDLG
 811 // ----------------------------------------------------------------------------
 812 // missing C RTL functions (FIXME shouldn't be here at all)
 813 // ----------------------------------------------------------------------------
 814
 815 #if defined( __MWERKS__ ) && !defined(__MACH__)
 816 char *strdup(const char *s)
 817 {
 818         return strcpy( (char*) malloc( strlen( s ) + 1 ) , s ) ;
 819 }
 820 int isascii( int c )
 821 {
 822         return ( c >= 0 && c < 128 ) ;
 823 }
 824 #endif // __MWERKS__
 825
 826 // ----------------------------------------------------------------------------
 827 // wxSafeYield and supporting functions
 828 // ----------------------------------------------------------------------------
 829
 830 void wxEnableTopLevelWindows(bool enable)
 831 {
 832     wxWindowList::Node *node;
 833     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 834         node->GetData()->Enable(enable);
 835 }
 836
 837 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
 838 {
 839     // remember the top level windows which were already disabled, so that we
 840     // don't reenable them later
 841     m_winDisabled = NULL;
 842
 843     wxWindowList::Node *node;
 844     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 845     {
 846         wxWindow *winTop = node->GetData();
 847         if ( winTop == winToSkip )
 848             continue;
 849
 850         if ( winTop->IsEnabled() )
 851         {
 852             winTop->Disable();
 853         }
 854         else
 855         {
 856             if ( !m_winDisabled )
 857             {
 858                 m_winDisabled = new wxWindowList;
 859             }
 860
 861             m_winDisabled->Append(winTop);
 862         }
 863     }
 864 }
 865
 866 wxWindowDisabler::~wxWindowDisabler()
 867 {
 868     wxWindowList::Node *node;
 869     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 870     {
 871         wxWindow *winTop = node->GetData();
 872         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
 873         {
 874             winTop->Enable();
 875         }
 876         //else: had been already disabled, don't reenable
 877     }
 878
 879     delete m_winDisabled;
 880 }
 881
 882 // Yield to other apps/messages and disable user input to all windows except
 883 // the given one
 884 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
 885 {
 886     wxWindowDisabler wd(win);
 887
 888     bool rc;
 889     if (onlyIfNeeded)
 890         rc = wxYieldIfNeeded();
 891     else
 892         rc = wxYield();
 893
 894     return rc;
 895 }
 896
 897 // ----------------------------------------------------------------------------
 898 // misc functions
 899 // ----------------------------------------------------------------------------
 900
 901 // Don't synthesize KeyUp events holding down a key and producing KeyDown
 902 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
 903 // in utilsgtk.cpp.
 904 #ifndef __WXGTK__
 905 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
 906 {
 907     return TRUE;    // detectable auto-repeat is the only mode MSW supports
 908 }
 909 #endif // !wxGTK
 910
 911 #endif // wxUSE_GUI
 912
 913 const wxChar *wxGetInstallPrefix()
 914 {
 915     wxString prefix;
 916
 917     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 918         return prefix.c_str();
 919
 920 #ifdef wxINSTALL_PREFIX
 921     return wxT(wxINSTALL_PREFIX);
 922 #else
 923     return wxT("");
 924 #endif
 925 }
 926
 927 wxString wxGetDataDir()
 928 {
 929     wxString format = wxGetInstallPrefix();
 930     format <<  wxFILE_SEP_PATH
 931            << wxT("share") << wxFILE_SEP_PATH
 932            << wxT("wx") << wxFILE_SEP_PATH
 933            << wxT("%i.%i");
 934     wxString dir;
 935     dir.Printf(format.c_str(), wxMAJOR_VERSION, wxMINOR_VERSION);
 936     return dir;
 937 }
 938
 939
 940 // ----------------------------------------------------------------------------
 941 // network and user id functions
 942 // ----------------------------------------------------------------------------
 943
 944 // Get Full RFC822 style email address
 945 bool wxGetEmailAddress(wxChar *address, int maxSize)
 946 {
 947     wxString email = wxGetEmailAddress();
 948     if ( !email )
 949         return FALSE;
 950
 951     wxStrncpy(address, email, maxSize - 1);
 952     address[maxSize - 1] = wxT('\0');
 953
 954     return TRUE;
 955 }
 956
 957 wxString wxGetEmailAddress()
 958 {
 959     wxString email;
 960
 961     wxString host = wxGetFullHostName();
 962     if ( !!host )
 963     {
 964         wxString user = wxGetUserId();
 965         if ( !!user )
 966         {
 967             email << user << wxT('@') << host;
 968         }
 969     }
 970
 971     return email;
 972 }
 973
 974 wxString wxGetUserId()
 975 {
 976     static const int maxLoginLen = 256; // FIXME arbitrary number
 977
 978     wxString buf;
 979     bool ok = wxGetUserId(buf.GetWriteBuf(maxLoginLen), maxLoginLen);
 980     buf.UngetWriteBuf();
 981
 982     if ( !ok )
 983         buf.Empty();
 984
 985     return buf;
 986 }
 987
 988 wxString wxGetUserName()
 989 {
 990     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 991
 992     wxString buf;
 993     bool ok = wxGetUserName(buf.GetWriteBuf(maxUserNameLen), maxUserNameLen);
 994     buf.UngetWriteBuf();
 995
 996     if ( !ok )
 997         buf.Empty();
 998
 999     return buf;
1000 }
1001
1002 wxString wxGetHostName()
1003 {
1004     static const size_t hostnameSize = 257;
1005
1006     wxString buf;
1007     bool ok = wxGetHostName(buf.GetWriteBuf(hostnameSize), hostnameSize);
1008
1009     buf.UngetWriteBuf();
1010
1011     if ( !ok )
1012         buf.Empty();
1013
1014     return buf;
1015 }
1016
1017 wxString wxGetFullHostName()
1018 {
1019     static const size_t hostnameSize = 257;
1020
1021     wxString buf;
1022     bool ok = wxGetFullHostName(buf.GetWriteBuf(hostnameSize), hostnameSize);
1023
1024     buf.UngetWriteBuf();
1025
1026     if ( !ok )
1027         buf.Empty();
1028
1029     return buf;
1030 }
1031
1032 wxString wxGetHomeDir()
1033 {
1034     wxString home;
1035     wxGetHomeDir(&home);
1036
1037     return home;
1038 }
1039
1040 #if 0
1041
1042 wxString wxGetCurrentDir()
1043 {
1044     wxString dir;
1045     size_t len = 1024;
1046     bool ok;
1047     do
1048     {
1049         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
1050         dir.UngetWriteBuf();
1051
1052         if ( !ok )
1053         {
1054             if ( errno != ERANGE )
1055             {
1056                 wxLogSysError(_T("Failed to get current directory"));
1057
1058                 return wxEmptyString;
1059             }
1060             else
1061             {
1062                 // buffer was too small, retry with a larger one
1063                 len *= 2;
1064             }
1065         }
1066         //else: ok
1067     } while ( !ok );
1068
1069     return dir;
1070 }
1071
1072 #endif // 0
1073
1074 // ----------------------------------------------------------------------------
1075 // wxExecute
1076 // ----------------------------------------------------------------------------
1077
1078 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
1079 //
1080 // returns TRUE if ok, FALSE if error
1081 #if wxUSE_STREAMS
1082 static bool ReadAll(wxInputStream *is, wxArrayString& output)
1083 {
1084     wxCHECK_MSG( is, FALSE, _T("NULL stream in wxExecute()?") );
1085
1086     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
1087     is->Reset();
1088
1089     wxTextInputStream tis(*is);
1090
1091     bool cont = TRUE;
1092     while ( cont )
1093     {
1094         wxString line = tis.ReadLine();
1095         if ( is->Eof() )
1096             break;
1097
1098         if ( !*is )
1099         {
1100             cont = FALSE;
1101         }
1102         else
1103         {
1104             output.Add(line);
1105         }
1106     }
1107
1108     return cont;
1109 }
1110 #endif // wxUSE_STREAMS
1111
1112 // this is a private function because it hasn't a clean interface: the first
1113 // array is passed by reference, the second by pointer - instead we have 2
1114 // public versions of wxExecute() below
1115 static long wxDoExecuteWithCapture(const wxString& command,
1116                                    wxArrayString& output,
1117                                    wxArrayString* error)
1118 {
1119 #ifdef __WIN16__
1120     wxFAIL_MSG("Sorry, this version of wxExecute not implemented on WIN16.");
1121
1122     return 0;
1123 #else // !Win16
1124     // create a wxProcess which will capture the output
1125     wxProcess *process = new wxProcess;
1126     process->Redirect();
1127
1128     long rc = wxExecute(command, wxEXEC_SYNC, process);
1129
1130 #if wxUSE_STREAMS
1131     if ( rc != -1 )
1132     {
1133         if ( !ReadAll(process->GetInputStream(), output) )
1134             rc = -1;
1135
1136         if ( error )
1137         {
1138             if ( !ReadAll(process->GetErrorStream(), *error) )
1139                 rc = -1;
1140         }
1141
1142     }
1143 #endif // wxUSE_STREAMS
1144
1145     delete process;
1146
1147     return rc;
1148 #endif // IO redirection supoprted
1149 }
1150
1151 long wxExecute(const wxString& command, wxArrayString& output)
1152 {
1153     return wxDoExecuteWithCapture(command, output, NULL);
1154 }
1155
1156 long wxExecute(const wxString& command,
1157                wxArrayString& output,
1158                wxArrayString& error)
1159 {
1160     return wxDoExecuteWithCapture(command, output, &error);
1161 }
1162
1163 // ----------------------------------------------------------------------------
1164 // wxApp::Yield() wrappers for backwards compatibility
1165 // ----------------------------------------------------------------------------
1166
1167 bool wxYield()
1168 {
1169 #if wxUSE_GUI
1170     return wxTheApp && wxTheApp->Yield();
1171 #else
1172     return FALSE;
1173 #endif
1174 }
1175
1176 bool wxYieldIfNeeded()
1177 {
1178 #if wxUSE_GUI
1179     return wxTheApp && wxTheApp->Yield(TRUE);
1180 #else
1181     return FALSE;
1182 #endif
1183 }
1184