src/common/datstrm.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/datstrm.cpp
   3 // Purpose:     Data stream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by: Mickael Gilabert
   6 // Created:     28/06/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16   #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_STREAMS
  20
  21 #include "wx/datstrm.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/math.h"
  25 #endif //WX_PRECOMP
  26
  27 // ---------------------------------------------------------------------------
  28 // wxDataInputStream
  29 // ---------------------------------------------------------------------------
  30
  31 #if wxUSE_UNICODE
  32 wxDataInputStream::wxDataInputStream(wxInputStream& s, const wxMBConv& conv)
  33   : m_input(&s), m_be_order(false), m_conv(conv.Clone())
  34 #else
  35 wxDataInputStream::wxDataInputStream(wxInputStream& s)
  36   : m_input(&s), m_be_order(false)
  37 #endif
  38 {
  39 }
  40
  41 wxDataInputStream::~wxDataInputStream()
  42 {
  43 #if wxUSE_UNICODE
  44     delete m_conv;
  45 #endif // wxUSE_UNICODE
  46 }
  47
  48 #if wxHAS_INT64
  49 wxUint64 wxDataInputStream::Read64()
  50 {
  51   wxUint64 tmp;
  52   Read64(&tmp, 1);
  53   return tmp;
  54 }
  55 #endif // wxHAS_INT64
  56
  57 wxUint32 wxDataInputStream::Read32()
  58 {
  59   wxUint32 i32;
  60
  61   m_input->Read(&i32, 4);
  62
  63   if (m_be_order)
  64     return wxUINT32_SWAP_ON_LE(i32);
  65   else
  66     return wxUINT32_SWAP_ON_BE(i32);
  67 }
  68
  69 wxUint16 wxDataInputStream::Read16()
  70 {
  71   wxUint16 i16;
  72
  73   m_input->Read(&i16, 2);
  74
  75   if (m_be_order)
  76     return wxUINT16_SWAP_ON_LE(i16);
  77   else
  78     return wxUINT16_SWAP_ON_BE(i16);
  79 }
  80
  81 wxUint8 wxDataInputStream::Read8()
  82 {
  83   wxUint8 buf;
  84
  85   m_input->Read(&buf, 1);
  86   return (wxUint8)buf;
  87 }
  88
  89 double wxDataInputStream::ReadDouble()
  90 {
  91 #if wxUSE_APPLE_IEEE
  92   char buf[10];
  93
  94   m_input->Read(buf, 10);
  95   return ConvertFromIeeeExtended((const wxInt8 *)buf);
  96 #else
  97   return 0.0;
  98 #endif
  99 }
 100
 101 wxString wxDataInputStream::ReadString()
 102 {
 103   size_t len;
 104
 105   len = Read32();
 106
 107   if (len > 0)
 108   {
 109 #if wxUSE_UNICODE
 110     wxCharBuffer tmp(len + 1);
 111     m_input->Read(tmp.data(), len);
 112     tmp.data()[len] = '\0';
 113     wxString ret(m_conv->cMB2WX(tmp.data()));
 114 #else
 115     wxString ret;
 116     m_input->Read( wxStringBuffer(ret, len), len);
 117 #endif
 118     return ret;
 119   }
 120   else
 121     return wxEmptyString;
 122 }
 123
 124 #if wxUSE_LONGLONG
 125
 126 template <class T>
 127 static
 128 void DoReadLL(T *buffer, size_t size, wxInputStream *input, bool be_order)
 129 {
 130     typedef T DataType;
 131     unsigned char *pchBuffer = new unsigned char[size * 8];
 132     // TODO: Check for overflow when size is of type uint and is > than 512m
 133     input->Read(pchBuffer, size * 8);
 134     size_t idx_base = 0;
 135     if ( be_order )
 136     {
 137         for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
 138         {
 139             buffer[uiIndex] = 0l;
 140             for ( unsigned ui = 0; ui != 8; ++ui )
 141             {
 142                 buffer[uiIndex] = buffer[uiIndex] * 256l +
 143                             DataType((unsigned long) pchBuffer[idx_base + ui]);
 144             }
 145
 146             idx_base += 8;
 147         }
 148     }
 149     else // little endian
 150     {
 151         for ( size_t uiIndex=0; uiIndex!=size; ++uiIndex )
 152         {
 153             buffer[uiIndex] = 0l;
 154             for ( unsigned ui=0; ui!=8; ++ui )
 155                 buffer[uiIndex] = buffer[uiIndex] * 256l +
 156                     DataType((unsigned long) pchBuffer[idx_base + 7 - ui]);
 157             idx_base += 8;
 158         }
 159     }
 160     delete[] pchBuffer;
 161 }
 162
 163 template <class T>
 164 static void DoWriteLL(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
 165 {
 166     typedef T DataType;
 167     unsigned char *pchBuffer = new unsigned char[size * 8];
 168     size_t idx_base = 0;
 169     if ( be_order )
 170     {
 171         for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
 172         {
 173             DataType i64 = buffer[uiIndex];
 174             for ( unsigned ui = 0; ui != 8; ++ui )
 175             {
 176                 pchBuffer[idx_base + 7 - ui] =
 177                     (unsigned char) (i64.GetLo() & 255l);
 178                 i64 >>= 8l;
 179             }
 180
 181             idx_base += 8;
 182         }
 183     }
 184     else // little endian
 185     {
 186         for ( size_t uiIndex=0; uiIndex != size; ++uiIndex )
 187         {
 188             DataType i64 = buffer[uiIndex];
 189             for (unsigned ui=0; ui!=8; ++ui)
 190             {
 191                 pchBuffer[idx_base + ui] =
 192                     (unsigned char) (i64.GetLo() & 255l);
 193                 i64 >>= 8l;
 194             }
 195
 196             idx_base += 8;
 197         }
 198     }
 199
 200     // TODO: Check for overflow when size is of type uint and is > than 512m
 201     output->Write(pchBuffer, size * 8);
 202     delete[] pchBuffer;
 203 }
 204
 205 #endif // wxUSE_LONGLONG
 206
 207 #ifdef wxLongLong_t
 208
 209 template <class T>
 210 static
 211 void DoReadI64(T *buffer, size_t size, wxInputStream *input, bool be_order)
 212 {
 213     typedef T DataType;
 214     unsigned char *pchBuffer = (unsigned char*) buffer;
 215     // TODO: Check for overflow when size is of type uint and is > than 512m
 216     input->Read(pchBuffer, size * 8);
 217     if ( be_order )
 218     {
 219         for ( wxUint32 i = 0; i < size; i++ )
 220         {
 221             DataType v = wxUINT64_SWAP_ON_LE(*buffer);
 222             *(buffer++) = v;
 223         }
 224     }
 225     else // little endian
 226     {
 227         for ( wxUint32 i=0; i<size; i++ )
 228         {
 229             DataType v = wxUINT64_SWAP_ON_BE(*buffer);
 230             *(buffer++) = v;
 231         }
 232     }
 233 }
 234
 235 template <class T>
 236 static
 237 void DoWriteI64(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
 238 {
 239   typedef T DataType;
 240   if ( be_order )
 241   {
 242     for ( size_t i = 0; i < size; i++ )
 243     {
 244       DataType i64 = wxUINT64_SWAP_ON_LE(*buffer);
 245       buffer++;
 246       output->Write(&i64, 8);
 247     }
 248   }
 249   else // little endian
 250   {
 251     for ( size_t i=0; i < size; i++ )
 252     {
 253       DataType i64 = wxUINT64_SWAP_ON_BE(*buffer);
 254       buffer++;
 255       output->Write(&i64, 8);
 256     }
 257   }
 258 }
 259
 260 #endif // wxLongLong_t
 261
 262
 263 #if wxHAS_INT64
 264 void wxDataInputStream::Read64(wxUint64 *buffer, size_t size)
 265 {
 266 #ifndef wxLongLong_t
 267     DoReadLL(buffer, size, m_input, m_be_order);
 268 #else
 269     DoReadI64(buffer, size, m_input, m_be_order);
 270 #endif
 271 }
 272
 273 void wxDataInputStream::Read64(wxInt64 *buffer, size_t size)
 274 {
 275 #ifndef wxLongLong_t
 276     DoReadLL(buffer, size, m_input, m_be_order);
 277 #else
 278     DoReadI64(buffer, size, m_input, m_be_order);
 279 #endif
 280 }
 281 #endif // wxHAS_INT64
 282
 283 #if defined(wxLongLong_t) && wxUSE_LONGLONG
 284 void wxDataInputStream::Read64(wxULongLong *buffer, size_t size)
 285 {
 286     DoReadLL(buffer, size, m_input, m_be_order);
 287 }
 288
 289 void wxDataInputStream::Read64(wxLongLong *buffer, size_t size)
 290 {
 291     DoReadLL(buffer, size, m_input, m_be_order);
 292 }
 293 #endif // wxLongLong_t
 294
 295 #if wxUSE_LONGLONG
 296 void wxDataInputStream::ReadLL(wxULongLong *buffer, size_t size)
 297 {
 298     DoReadLL(buffer, size, m_input, m_be_order);
 299 }
 300
 301 void wxDataInputStream::ReadLL(wxLongLong *buffer, size_t size)
 302 {
 303     DoReadLL(buffer, size, m_input, m_be_order);
 304 }
 305
 306 wxLongLong wxDataInputStream::ReadLL(void)
 307 {
 308     wxLongLong ll;
 309     DoReadLL(&ll, (size_t)1, m_input, m_be_order);
 310     return ll;
 311 }
 312 #endif // wxUSE_LONGLONG
 313
 314 void wxDataInputStream::Read32(wxUint32 *buffer, size_t size)
 315 {
 316     m_input->Read(buffer, size * 4);
 317
 318     if (m_be_order)
 319     {
 320         for (wxUint32 i=0; i<size; i++)
 321         {
 322             wxUint32 v = wxUINT32_SWAP_ON_LE(*buffer);
 323             *(buffer++) = v;
 324         }
 325     }
 326     else
 327     {
 328         for (wxUint32 i=0; i<size; i++)
 329         {
 330             wxUint32 v = wxUINT32_SWAP_ON_BE(*buffer);
 331             *(buffer++) = v;
 332         }
 333     }
 334 }
 335
 336 void wxDataInputStream::Read16(wxUint16 *buffer, size_t size)
 337 {
 338   m_input->Read(buffer, size * 2);
 339
 340   if (m_be_order)
 341   {
 342     for (wxUint32 i=0; i<size; i++)
 343     {
 344       wxUint16 v = wxUINT16_SWAP_ON_LE(*buffer);
 345       *(buffer++) = v;
 346     }
 347   }
 348   else
 349   {
 350     for (wxUint32 i=0; i<size; i++)
 351     {
 352       wxUint16 v = wxUINT16_SWAP_ON_BE(*buffer);
 353       *(buffer++) = v;
 354     }
 355   }
 356 }
 357
 358 void wxDataInputStream::Read8(wxUint8 *buffer, size_t size)
 359 {
 360   m_input->Read(buffer, size);
 361 }
 362
 363 void wxDataInputStream::ReadDouble(double *buffer, size_t size)
 364 {
 365   for (wxUint32 i=0; i<size; i++)
 366   {
 367     *(buffer++) = ReadDouble();
 368   }
 369 }
 370
 371 wxDataInputStream& wxDataInputStream::operator>>(wxString& s)
 372 {
 373   s = ReadString();
 374   return *this;
 375 }
 376
 377 wxDataInputStream& wxDataInputStream::operator>>(wxInt8& c)
 378 {
 379   c = (wxInt8)Read8();
 380   return *this;
 381 }
 382
 383 wxDataInputStream& wxDataInputStream::operator>>(wxInt16& i)
 384 {
 385   i = (wxInt16)Read16();
 386   return *this;
 387 }
 388
 389 wxDataInputStream& wxDataInputStream::operator>>(wxInt32& i)
 390 {
 391   i = (wxInt32)Read32();
 392   return *this;
 393 }
 394
 395 wxDataInputStream& wxDataInputStream::operator>>(wxUint8& c)
 396 {
 397   c = Read8();
 398   return *this;
 399 }
 400
 401 wxDataInputStream& wxDataInputStream::operator>>(wxUint16& i)
 402 {
 403   i = Read16();
 404   return *this;
 405 }
 406
 407 wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i)
 408 {
 409   i = Read32();
 410   return *this;
 411 }
 412
 413 #if wxHAS_INT64
 414 wxDataInputStream& wxDataInputStream::operator>>(wxUint64& i)
 415 {
 416   i = Read64();
 417   return *this;
 418 }
 419
 420 wxDataInputStream& wxDataInputStream::operator>>(wxInt64& i)
 421 {
 422   i = Read64();
 423   return *this;
 424 }
 425 #endif // wxHAS_INT64
 426
 427 #if defined(wxLongLong_t) && wxUSE_LONGLONG
 428 wxDataInputStream& wxDataInputStream::operator>>(wxULongLong& i)
 429 {
 430   i = ReadLL();
 431   return *this;
 432 }
 433
 434 wxDataInputStream& wxDataInputStream::operator>>(wxLongLong& i)
 435 {
 436   i = ReadLL();
 437   return *this;
 438 }
 439 #endif // wxLongLong_t
 440
 441 wxDataInputStream& wxDataInputStream::operator>>(double& i)
 442 {
 443   i = ReadDouble();
 444   return *this;
 445 }
 446
 447 wxDataInputStream& wxDataInputStream::operator>>(float& f)
 448 {
 449   f = (float)ReadDouble();
 450   return *this;
 451 }
 452
 453 // ---------------------------------------------------------------------------
 454 // wxDataOutputStream
 455 // ---------------------------------------------------------------------------
 456
 457 #if wxUSE_UNICODE
 458 wxDataOutputStream::wxDataOutputStream(wxOutputStream& s, const wxMBConv& conv)
 459   : m_output(&s), m_be_order(false), m_conv(conv.Clone())
 460 #else
 461 wxDataOutputStream::wxDataOutputStream(wxOutputStream& s)
 462   : m_output(&s), m_be_order(false)
 463 #endif
 464 {
 465 }
 466
 467 wxDataOutputStream::~wxDataOutputStream()
 468 {
 469 #if wxUSE_UNICODE
 470     delete m_conv;
 471 #endif // wxUSE_UNICODE
 472 }
 473
 474 #if wxHAS_INT64
 475 void wxDataOutputStream::Write64(wxUint64 i)
 476 {
 477   Write64(&i, 1);
 478 }
 479
 480 void wxDataOutputStream::Write64(wxInt64 i)
 481 {
 482   Write64(&i, 1);
 483 }
 484 #endif // wxHAS_INT64
 485
 486 void wxDataOutputStream::Write32(wxUint32 i)
 487 {
 488   wxUint32 i32;
 489
 490   if (m_be_order)
 491     i32 = wxUINT32_SWAP_ON_LE(i);
 492   else
 493     i32 = wxUINT32_SWAP_ON_BE(i);
 494   m_output->Write(&i32, 4);
 495 }
 496
 497 void wxDataOutputStream::Write16(wxUint16 i)
 498 {
 499   wxUint16 i16;
 500
 501   if (m_be_order)
 502     i16 = wxUINT16_SWAP_ON_LE(i);
 503   else
 504     i16 = wxUINT16_SWAP_ON_BE(i);
 505
 506   m_output->Write(&i16, 2);
 507 }
 508
 509 void wxDataOutputStream::Write8(wxUint8 i)
 510 {
 511   m_output->Write(&i, 1);
 512 }
 513
 514 void wxDataOutputStream::WriteString(const wxString& string)
 515 {
 516 #if wxUSE_UNICODE
 517   const wxWX2MBbuf buf = string.mb_str(*m_conv);
 518 #else
 519   const wxWX2MBbuf buf = string.mb_str();
 520 #endif
 521   size_t len = strlen(buf);
 522   Write32(len);
 523   if (len > 0)
 524       m_output->Write(buf, len);
 525 }
 526
 527 void wxDataOutputStream::WriteDouble(double d)
 528 {
 529   char buf[10];
 530
 531 #if wxUSE_APPLE_IEEE
 532   ConvertToIeeeExtended(d, (wxInt8 *)buf);
 533 #else
 534 #if !defined(__VMS__) && !defined(__GNUG__)
 535 # pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!"
 536 #endif
 537    buf[0] = '\0';
 538 #endif
 539   m_output->Write(buf, 10);
 540 }
 541
 542 #if wxHAS_INT64
 543 void wxDataOutputStream::Write64(const wxUint64 *buffer, size_t size)
 544 {
 545 #ifndef wxLongLong_t
 546     DoWriteLL(buffer, size, m_output, m_be_order);
 547 #else
 548     DoWriteI64(buffer, size, m_output, m_be_order);
 549 #endif
 550 }
 551
 552 void wxDataOutputStream::Write64(const wxInt64 *buffer, size_t size)
 553 {
 554 #ifndef wxLongLong_t
 555     DoWriteLL(buffer, size, m_output, m_be_order);
 556 #else
 557     DoWriteI64(buffer, size, m_output, m_be_order);
 558 #endif
 559 }
 560 #endif // wxHAS_INT64
 561
 562 #if defined(wxLongLong_t) && wxUSE_LONGLONG
 563 void wxDataOutputStream::Write64(const wxULongLong *buffer, size_t size)
 564 {
 565     DoWriteLL(buffer, size, m_output, m_be_order);
 566 }
 567
 568 void wxDataOutputStream::Write64(const wxLongLong *buffer, size_t size)
 569 {
 570     DoWriteLL(buffer, size, m_output, m_be_order);
 571 }
 572 #endif // wxLongLong_t
 573
 574 #if wxUSE_LONGLONG
 575 void wxDataOutputStream::WriteLL(const wxULongLong *buffer, size_t size)
 576 {
 577     DoWriteLL(buffer, size, m_output, m_be_order);
 578 }
 579
 580 void wxDataOutputStream::WriteLL(const wxLongLong *buffer, size_t size)
 581 {
 582     DoWriteLL(buffer, size, m_output, m_be_order);
 583 }
 584
 585 void wxDataOutputStream::WriteLL(const wxLongLong &ll)
 586 {
 587     WriteLL(&ll, 1);
 588 }
 589
 590 void wxDataOutputStream::WriteLL(const wxULongLong &ll)
 591 {
 592     WriteLL(&ll, 1);
 593 }
 594 #endif // wxUSE_LONGLONG
 595
 596 void wxDataOutputStream::Write32(const wxUint32 *buffer, size_t size)
 597 {
 598   if (m_be_order)
 599   {
 600     for (wxUint32 i=0; i<size ;i++)
 601     {
 602       wxUint32 i32 = wxUINT32_SWAP_ON_LE(*buffer);
 603       buffer++;
 604       m_output->Write(&i32, 4);
 605     }
 606   }
 607   else
 608   {
 609     for (wxUint32 i=0; i<size ;i++)
 610     {
 611       wxUint32 i32 = wxUINT32_SWAP_ON_BE(*buffer);
 612       buffer++;
 613       m_output->Write(&i32, 4);
 614     }
 615   }
 616 }
 617
 618 void wxDataOutputStream::Write16(const wxUint16 *buffer, size_t size)
 619 {
 620   if (m_be_order)
 621   {
 622     for (wxUint32 i=0; i<size ;i++)
 623     {
 624       wxUint16 i16 = wxUINT16_SWAP_ON_LE(*buffer);
 625       buffer++;
 626       m_output->Write(&i16, 2);
 627     }
 628   }
 629   else
 630   {
 631     for (wxUint32 i=0; i<size ;i++)
 632     {
 633       wxUint16 i16 = wxUINT16_SWAP_ON_BE(*buffer);
 634       buffer++;
 635       m_output->Write(&i16, 2);
 636     }
 637   }
 638 }
 639
 640 void wxDataOutputStream::Write8(const wxUint8 *buffer, size_t size)
 641 {
 642   m_output->Write(buffer, size);
 643 }
 644
 645 void wxDataOutputStream::WriteDouble(const double *buffer, size_t size)
 646 {
 647   for (wxUint32 i=0; i<size; i++)
 648   {
 649     WriteDouble(*(buffer++));
 650   }
 651 }
 652
 653 wxDataOutputStream& wxDataOutputStream::operator<<(const wxString& string)
 654 {
 655   WriteString(string);
 656   return *this;
 657 }
 658
 659 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt8 c)
 660 {
 661   Write8((wxUint8)c);
 662   return *this;
 663 }
 664
 665 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt16 i)
 666 {
 667   Write16((wxUint16)i);
 668   return *this;
 669 }
 670
 671 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt32 i)
 672 {
 673   Write32((wxUint32)i);
 674   return *this;
 675 }
 676
 677 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint8 c)
 678 {
 679   Write8(c);
 680   return *this;
 681 }
 682
 683 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint16 i)
 684 {
 685   Write16(i);
 686   return *this;
 687 }
 688
 689 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint32 i)
 690 {
 691   Write32(i);
 692   return *this;
 693 }
 694
 695 #if wxHAS_INT64
 696 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint64 i)
 697 {
 698   Write64(i);
 699   return *this;
 700 }
 701
 702 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt64 i)
 703 {
 704   Write64(i);
 705   return *this;
 706 }
 707 #endif // wxHAS_INT64
 708
 709 #if defined(wxLongLong_t) && wxUSE_LONGLONG
 710 wxDataOutputStream& wxDataOutputStream::operator<<(const wxULongLong &i)
 711 {
 712   WriteLL(i);
 713   return *this;
 714 }
 715
 716 wxDataOutputStream& wxDataOutputStream::operator<<(const wxLongLong &i)
 717 {
 718   WriteLL(i);
 719   return *this;
 720 }
 721 #endif // wxLongLong_t
 722
 723 wxDataOutputStream& wxDataOutputStream::operator<<(double f)
 724 {
 725   WriteDouble(f);
 726   return *this;
 727 }
 728
 729 wxDataOutputStream& wxDataOutputStream::operator<<(float f)
 730 {
 731   WriteDouble((double)f);
 732   return *this;
 733 }
 734
 735 #endif
 736   // wxUSE_STREAMS