src/common/datstrm.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 // ---------------------------------------------------------------------------
  24 // wxDataInputStream
  25 // ---------------------------------------------------------------------------
  26
  27 #if wxUSE_UNICODE
  28 wxDataInputStream::wxDataInputStream(wxInputStream& s, wxMBConv& conv)
  29   : m_input(&s), m_be_order(false), m_conv(conv)
  30 #else
  31 wxDataInputStream::wxDataInputStream(wxInputStream& s)
  32   : m_input(&s), m_be_order(false)
  33 #endif
  34 {
  35 }
  36
  37 wxUint64 wxDataInputStream::Read64()
  38 {
  39   wxUint64 i64;
  40
  41   m_input->Read(&i64, 8);
  42
  43   if (m_be_order)
  44     return wxUINT64_SWAP_ON_LE(i64);
  45   else
  46     return wxUINT64_SWAP_ON_BE(i64);
  47 }
  48
  49 wxUint32 wxDataInputStream::Read32()
  50 {
  51   wxUint32 i32;
  52
  53   m_input->Read(&i32, 4);
  54
  55   if (m_be_order)
  56     return wxUINT32_SWAP_ON_LE(i32);
  57   else
  58     return wxUINT32_SWAP_ON_BE(i32);
  59 }
  60
  61 wxUint16 wxDataInputStream::Read16()
  62 {
  63   wxUint16 i16;
  64
  65   m_input->Read(&i16, 2);
  66
  67   if (m_be_order)
  68     return wxUINT16_SWAP_ON_LE(i16);
  69   else
  70     return wxUINT16_SWAP_ON_BE(i16);
  71 }
  72
  73 wxUint8 wxDataInputStream::Read8()
  74 {
  75   wxUint8 buf;
  76
  77   m_input->Read(&buf, 1);
  78   return (wxUint8)buf;
  79 }
  80
  81 // Must be at global scope for VC++ 5
  82 extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes);
  83
  84 double wxDataInputStream::ReadDouble()
  85 {
  86 #if wxUSE_APPLE_IEEE
  87   char buf[10];
  88
  89   m_input->Read(buf, 10);
  90   return ConvertFromIeeeExtended((unsigned char *)buf);
  91 #else
  92   return 0.0;
  93 #endif
  94 }
  95
  96 wxString wxDataInputStream::ReadString()
  97 {
  98   size_t len;
  99
 100   len = Read32();
 101
 102   if (len > 0)
 103   {
 104 #if wxUSE_UNICODE
 105     wxCharBuffer tmp(len + 1);
 106     m_input->Read(tmp.data(), len);
 107     tmp.data()[len] = '\0';
 108     wxString ret(m_conv.cMB2WX(tmp.data()));
 109 #else
 110     wxString ret;
 111     m_input->Read( wxStringBuffer(ret, len), len);
 112 #endif
 113     return ret;
 114   }
 115   else
 116     return wxEmptyString;
 117 }
 118
 119 void wxDataInputStream::Read64(wxUint64 *buffer, size_t size)
 120 {
 121   m_input->Read(buffer, size * 8);
 122
 123   if (m_be_order)
 124   {
 125     for (wxUint32 i=0; i<size; i++)
 126     {
 127       wxUint64 v = wxUINT64_SWAP_ON_LE(*buffer);
 128       *(buffer++) = v;
 129     }
 130   }
 131   else
 132   {
 133     for (wxUint32 i=0; i<size; i++)
 134     {
 135       wxUint64 v = wxUINT64_SWAP_ON_BE(*buffer);
 136       *(buffer++) = v;
 137     }
 138   }
 139 }
 140
 141 void wxDataInputStream::Read32(wxUint32 *buffer, size_t size)
 142 {
 143     m_input->Read(buffer, size * 4);
 144
 145     if (m_be_order)
 146     {
 147         for (wxUint32 i=0; i<size; i++)
 148         {
 149             wxUint32 v = wxUINT32_SWAP_ON_LE(*buffer);
 150             *(buffer++) = v;
 151         }
 152     }
 153     else
 154     {
 155         for (wxUint32 i=0; i<size; i++)
 156         {
 157             wxUint32 v = wxUINT32_SWAP_ON_BE(*buffer);
 158             *(buffer++) = v;
 159         }
 160     }
 161 }
 162
 163 void wxDataInputStream::Read16(wxUint16 *buffer, size_t size)
 164 {
 165   m_input->Read(buffer, size * 2);
 166
 167   if (m_be_order)
 168   {
 169     for (wxUint32 i=0; i<size; i++)
 170     {
 171       wxUint16 v = wxUINT16_SWAP_ON_LE(*buffer);
 172       *(buffer++) = v;
 173     }
 174   }
 175   else
 176   {
 177     for (wxUint32 i=0; i<size; i++)
 178     {
 179       wxUint16 v = wxUINT16_SWAP_ON_BE(*buffer);
 180       *(buffer++) = v;
 181     }
 182   }
 183 }
 184
 185 void wxDataInputStream::Read8(wxUint8 *buffer, size_t size)
 186 {
 187   m_input->Read(buffer, size);
 188 }
 189
 190 void wxDataInputStream::ReadDouble(double *buffer, size_t size)
 191 {
 192   for (wxUint32 i=0; i<size; i++)
 193   {
 194     *(buffer++) = ReadDouble();
 195   }
 196 }
 197
 198 wxDataInputStream& wxDataInputStream::operator>>(wxString& s)
 199 {
 200   s = ReadString();
 201   return *this;
 202 }
 203
 204 wxDataInputStream& wxDataInputStream::operator>>(wxInt8& c)
 205 {
 206   c = (wxInt8)Read8();
 207   return *this;
 208 }
 209
 210 wxDataInputStream& wxDataInputStream::operator>>(wxInt16& i)
 211 {
 212   i = (wxInt16)Read16();
 213   return *this;
 214 }
 215
 216 wxDataInputStream& wxDataInputStream::operator>>(wxInt32& i)
 217 {
 218   i = (wxInt32)Read32();
 219   return *this;
 220 }
 221
 222 wxDataInputStream& wxDataInputStream::operator>>(wxUint8& c)
 223 {
 224   c = Read8();
 225   return *this;
 226 }
 227
 228 wxDataInputStream& wxDataInputStream::operator>>(wxUint16& i)
 229 {
 230   i = Read16();
 231   return *this;
 232 }
 233
 234 wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i)
 235 {
 236   i = Read32();
 237   return *this;
 238 }
 239
 240 wxDataInputStream& wxDataInputStream::operator>>(wxUint64& i)
 241 {
 242   i = Read64();
 243   return *this;
 244 }
 245
 246 wxDataInputStream& wxDataInputStream::operator>>(double& i)
 247 {
 248   i = ReadDouble();
 249   return *this;
 250 }
 251
 252 wxDataInputStream& wxDataInputStream::operator>>(float& f)
 253 {
 254   f = (float)ReadDouble();
 255   return *this;
 256 }
 257
 258 // ---------------------------------------------------------------------------
 259 // wxDataOutputStream
 260 // ---------------------------------------------------------------------------
 261
 262 #if wxUSE_UNICODE
 263 wxDataOutputStream::wxDataOutputStream(wxOutputStream& s, wxMBConv& conv)
 264   : m_output(&s), m_be_order(false), m_conv(conv)
 265 #else
 266 wxDataOutputStream::wxDataOutputStream(wxOutputStream& s)
 267   : m_output(&s), m_be_order(false)
 268 #endif
 269 {
 270 }
 271
 272 void wxDataOutputStream::Write64(wxUint64 i)
 273 {
 274   wxUint64 i64;
 275
 276   if (m_be_order)
 277     i64 = wxUINT64_SWAP_ON_LE(i);
 278   else
 279     i64 = wxUINT64_SWAP_ON_BE(i);
 280   m_output->Write(&i64, 8);
 281 }
 282
 283 void wxDataOutputStream::Write32(wxUint32 i)
 284 {
 285   wxUint32 i32;
 286
 287   if (m_be_order)
 288     i32 = wxUINT32_SWAP_ON_LE(i);
 289   else
 290     i32 = wxUINT32_SWAP_ON_BE(i);
 291   m_output->Write(&i32, 4);
 292 }
 293
 294 void wxDataOutputStream::Write16(wxUint16 i)
 295 {
 296   wxUint16 i16;
 297
 298   if (m_be_order)
 299     i16 = wxUINT16_SWAP_ON_LE(i);
 300   else
 301     i16 = wxUINT16_SWAP_ON_BE(i);
 302
 303   m_output->Write(&i16, 2);
 304 }
 305
 306 void wxDataOutputStream::Write8(wxUint8 i)
 307 {
 308   m_output->Write(&i, 1);
 309 }
 310
 311 void wxDataOutputStream::WriteString(const wxString& string)
 312 {
 313 #if wxUSE_UNICODE
 314   const wxWX2MBbuf buf = string.mb_str(m_conv);
 315 #else
 316   const wxWX2MBbuf buf = string.mb_str();
 317 #endif
 318   size_t len = strlen(buf);
 319   Write32(len);
 320   if (len > 0)
 321       m_output->Write(buf, len);
 322 }
 323
 324 // Must be at global scope for VC++ 5
 325 extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes);
 326
 327 void wxDataOutputStream::WriteDouble(double d)
 328 {
 329   char buf[10];
 330
 331 #if wxUSE_APPLE_IEEE
 332   ConvertToIeeeExtended(d, (unsigned char *)buf);
 333 #else
 334 #if !defined(__VMS__) && !defined(__GNUG__)
 335 # pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!"
 336 #endif
 337    buf[0] = '\0';
 338 #endif
 339   m_output->Write(buf, 10);
 340 }
 341
 342 void wxDataOutputStream::Write64(const wxUint64 *buffer, size_t size)
 343 {
 344   if (m_be_order)
 345   {
 346     for (wxUint32 i=0; i<size ;i++)
 347     {
 348       wxUint64 i64 = wxUINT64_SWAP_ON_LE(*buffer);
 349       buffer++;
 350       m_output->Write(&i64, 8);
 351     }
 352   }
 353   else
 354   {
 355     for (wxUint32 i=0; i<size ;i++)
 356     {
 357       wxUint64 i64 = wxUINT64_SWAP_ON_BE(*buffer);
 358       buffer++;
 359       m_output->Write(&i64, 8);
 360     }
 361   }
 362 }
 363
 364 void wxDataOutputStream::Write32(const wxUint32 *buffer, size_t size)
 365 {
 366   if (m_be_order)
 367   {
 368     for (wxUint32 i=0; i<size ;i++)
 369     {
 370       wxUint32 i32 = wxUINT32_SWAP_ON_LE(*buffer);
 371       buffer++;
 372       m_output->Write(&i32, 4);
 373     }
 374   }
 375   else
 376   {
 377     for (wxUint32 i=0; i<size ;i++)
 378     {
 379       wxUint32 i32 = wxUINT32_SWAP_ON_BE(*buffer);
 380       buffer++;
 381       m_output->Write(&i32, 4);
 382     }
 383   }
 384 }
 385
 386 void wxDataOutputStream::Write16(const wxUint16 *buffer, size_t size)
 387 {
 388   if (m_be_order)
 389   {
 390     for (wxUint32 i=0; i<size ;i++)
 391     {
 392       wxUint16 i16 = wxUINT16_SWAP_ON_LE(*buffer);
 393       buffer++;
 394       m_output->Write(&i16, 2);
 395     }
 396   }
 397   else
 398   {
 399     for (wxUint32 i=0; i<size ;i++)
 400     {
 401       wxUint16 i16 = wxUINT16_SWAP_ON_BE(*buffer);
 402       buffer++;
 403       m_output->Write(&i16, 2);
 404     }
 405   }
 406 }
 407
 408 void wxDataOutputStream::Write8(const wxUint8 *buffer, size_t size)
 409 {
 410   m_output->Write(buffer, size);
 411 }
 412
 413 void wxDataOutputStream::WriteDouble(const double *buffer, size_t size)
 414 {
 415   for (wxUint32 i=0; i<size; i++)
 416   {
 417     WriteDouble(*(buffer++));
 418   }
 419 }
 420
 421 wxDataOutputStream& wxDataOutputStream::operator<<(const wxChar *string)
 422 {
 423   Write32(wxStrlen(string));
 424   m_output->Write((const char *)string, wxStrlen(string)*sizeof(wxChar));
 425   return *this;
 426 }
 427
 428 wxDataOutputStream& wxDataOutputStream::operator<<(const wxString& string)
 429 {
 430   WriteString(string);
 431   return *this;
 432 }
 433
 434 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt8 c)
 435 {
 436   Write8((wxUint8)c);
 437   return *this;
 438 }
 439
 440 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt16 i)
 441 {
 442   Write16((wxUint16)i);
 443   return *this;
 444 }
 445
 446 wxDataOutputStream& wxDataOutputStream::operator<<(wxInt32 i)
 447 {
 448   Write32((wxUint32)i);
 449   return *this;
 450 }
 451
 452 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint8 c)
 453 {
 454   Write8(c);
 455   return *this;
 456 }
 457
 458 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint16 i)
 459 {
 460   Write16(i);
 461   return *this;
 462 }
 463
 464 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint32 i)
 465 {
 466   Write32(i);
 467   return *this;
 468 }
 469
 470 wxDataOutputStream& wxDataOutputStream::operator<<(wxUint64 i)
 471 {
 472   Write64(i);
 473   return *this;
 474 }
 475
 476 wxDataOutputStream& wxDataOutputStream::operator<<(double f)
 477 {
 478   WriteDouble(f);
 479   return *this;
 480 }
 481
 482 wxDataOutputStream& wxDataOutputStream::operator<<(float f)
 483 {
 484   WriteDouble((double)f);
 485   return *this;
 486 }
 487
 488 #endif
 489   // wxUSE_STREAMS
 490