src/common/txtstrm.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/txtstrm.cpp
   3 // Purpose:     Text stream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   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/txtstrm.h"
  22 #include <ctype.h>
  23
  24
  25 // ----------------------------------------------------------------------------
  26 // constants
  27 // ----------------------------------------------------------------------------
  28
  29 // Unix: "\n"
  30 // Dos:  "\r\n"
  31 // Mac:  "\r"
  32
  33 // ----------------------------------------------------------------------------
  34 // wxTextInputStream
  35 // ----------------------------------------------------------------------------
  36
  37 #if wxUSE_UNICODE
  38 wxTextInputStream::wxTextInputStream(wxInputStream &s,
  39                                      const wxString &sep,
  40                                      const wxMBConv& conv)
  41   : m_input(s), m_separators(sep), m_conv(conv.Clone())
  42 {
  43     memset((void*)m_lastBytes, 0, 10);
  44 }
  45 #else
  46 wxTextInputStream::wxTextInputStream(wxInputStream &s, const wxString &sep)
  47   : m_input(s), m_separators(sep)
  48 {
  49     memset((void*)m_lastBytes, 0, 10);
  50 }
  51 #endif
  52
  53 wxTextInputStream::~wxTextInputStream()
  54 {
  55 #if wxUSE_UNICODE
  56     delete m_conv;
  57 #endif // wxUSE_UNICODE
  58 }
  59
  60 void wxTextInputStream::UngetLast()
  61 {
  62     size_t byteCount = 0;
  63     while(m_lastBytes[byteCount]) // pseudo ANSI strlen (even for Unicode!)
  64         byteCount++;
  65     m_input.Ungetch(m_lastBytes, byteCount);
  66     memset((void*)m_lastBytes, 0, 10);
  67 }
  68
  69 wxChar wxTextInputStream::NextChar()
  70 {
  71 #if wxUSE_UNICODE
  72     wxChar wbuf[2];
  73     memset((void*)m_lastBytes, 0, 10);
  74     for(size_t inlen = 0; inlen < 9; inlen++)
  75     {
  76         // actually read the next character
  77         m_lastBytes[inlen] = m_input.GetC();
  78
  79         if(m_input.LastRead() <= 0)
  80             return wxEOT;
  81
  82         if ( m_conv->ToWChar(wbuf, WXSIZEOF(wbuf), m_lastBytes, inlen + 1)
  83                 != wxCONV_FAILED )
  84             return wbuf[0];
  85     }
  86     // there should be no encoding which requires more than nine bytes for one character...
  87     return wxEOT;
  88 #else
  89     m_lastBytes[0] = m_input.GetC();
  90
  91     if(m_input.LastRead() <= 0)
  92         return wxEOT;
  93
  94     return m_lastBytes[0];
  95 #endif
  96
  97 }
  98
  99 wxChar wxTextInputStream::NextNonSeparators()
 100 {
 101     for (;;)
 102     {
 103         wxChar c = NextChar();
 104         if (c == wxEOT) return (wxChar) 0;
 105
 106         if (c != wxT('\n') &&
 107             c != wxT('\r') &&
 108             !m_separators.Contains(c))
 109           return c;
 110     }
 111
 112 }
 113
 114 bool wxTextInputStream::EatEOL(const wxChar &c)
 115 {
 116     if (c == wxT('\n')) return true; // eat on UNIX
 117
 118     if (c == wxT('\r')) // eat on both Mac and DOS
 119     {
 120         wxChar c2 = NextChar();
 121         if(c2 == wxEOT) return true; // end of stream reached, had enough :-)
 122
 123         if (c2 != wxT('\n')) UngetLast(); // Don't eat on Mac
 124         return true;
 125     }
 126
 127     return false;
 128 }
 129
 130 wxUint32 wxTextInputStream::Read32(int base)
 131 {
 132     wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
 133     if(!m_input) return 0;
 134
 135     wxString word = ReadWord();
 136     if(word.empty())
 137         return 0;
 138     return wxStrtoul(word.c_str(), 0, base);
 139 }
 140
 141 wxUint16 wxTextInputStream::Read16(int base)
 142 {
 143     return (wxUint16)Read32(base);
 144 }
 145
 146 wxUint8 wxTextInputStream::Read8(int base)
 147 {
 148     return (wxUint8)Read32(base);
 149 }
 150
 151 wxInt32 wxTextInputStream::Read32S(int base)
 152 {
 153     wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
 154     if(!m_input) return 0;
 155
 156     wxString word = ReadWord();
 157     if(word.empty())
 158         return 0;
 159     return wxStrtol(word.c_str(), 0, base);
 160 }
 161
 162 wxInt16 wxTextInputStream::Read16S(int base)
 163 {
 164     return (wxInt16)Read32S(base);
 165 }
 166
 167 wxInt8 wxTextInputStream::Read8S(int base)
 168 {
 169     return (wxInt8)Read32S(base);
 170 }
 171
 172 double wxTextInputStream::ReadDouble()
 173 {
 174     if(!m_input) return 0;
 175     wxString word = ReadWord();
 176     if(word.empty())
 177         return 0;
 178     return wxStrtod(word.c_str(), 0);
 179 }
 180
 181 #if WXWIN_COMPATIBILITY_2_6
 182
 183 wxString wxTextInputStream::ReadString()
 184 {
 185     return ReadLine();
 186 }
 187
 188 #endif // WXWIN_COMPATIBILITY_2_6
 189
 190 wxString wxTextInputStream::ReadLine()
 191 {
 192     wxString line;
 193
 194     while ( !m_input.Eof() )
 195     {
 196         wxChar c = NextChar();
 197         if(c == wxEOT)
 198             break;
 199
 200         if (EatEOL(c))
 201             break;
 202
 203         line += c;
 204     }
 205
 206     return line;
 207 }
 208
 209 wxString wxTextInputStream::ReadWord()
 210 {
 211     wxString word;
 212
 213     if ( !m_input )
 214         return word;
 215
 216     wxChar c = NextNonSeparators();
 217     if ( !c )
 218         return word;
 219
 220     word += c;
 221
 222     while ( !m_input.Eof() )
 223     {
 224         c = NextChar();
 225         if(c == wxEOT)
 226             break;
 227
 228         if (m_separators.Contains(c))
 229             break;
 230
 231         if (EatEOL(c))
 232             break;
 233
 234         word += c;
 235     }
 236
 237     return word;
 238 }
 239
 240 wxTextInputStream& wxTextInputStream::operator>>(wxString& word)
 241 {
 242     word = ReadWord();
 243     return *this;
 244 }
 245
 246 wxTextInputStream& wxTextInputStream::operator>>(char& c)
 247 {
 248     c = m_input.GetC();
 249     if(m_input.LastRead() <= 0) c = 0;
 250
 251     if (EatEOL(c))
 252         c = '\n';
 253
 254     return *this;
 255 }
 256
 257 #if wxUSE_UNICODE && wxWCHAR_T_IS_REAL_TYPE
 258
 259 wxTextInputStream& wxTextInputStream::operator>>(wchar_t& wc)
 260 {
 261     wc = GetChar();
 262
 263     return *this;
 264 }
 265
 266 #endif // wxUSE_UNICODE
 267
 268 wxTextInputStream& wxTextInputStream::operator>>(wxInt16& i)
 269 {
 270     i = (wxInt16)Read16();
 271     return *this;
 272 }
 273
 274 wxTextInputStream& wxTextInputStream::operator>>(wxInt32& i)
 275 {
 276     i = (wxInt32)Read32();
 277     return *this;
 278 }
 279
 280 wxTextInputStream& wxTextInputStream::operator>>(wxUint16& i)
 281 {
 282     i = Read16();
 283     return *this;
 284 }
 285
 286 wxTextInputStream& wxTextInputStream::operator>>(wxUint32& i)
 287 {
 288     i = Read32();
 289     return *this;
 290 }
 291
 292 wxTextInputStream& wxTextInputStream::operator>>(double& i)
 293 {
 294     i = ReadDouble();
 295     return *this;
 296 }
 297
 298 wxTextInputStream& wxTextInputStream::operator>>(float& f)
 299 {
 300     f = (float)ReadDouble();
 301     return *this;
 302 }
 303
 304
 305
 306 #if wxUSE_UNICODE
 307 wxTextOutputStream::wxTextOutputStream(wxOutputStream& s,
 308                                        wxEOL mode,
 309                                        const wxMBConv& conv)
 310   : m_output(s), m_conv(conv.Clone())
 311 #else
 312 wxTextOutputStream::wxTextOutputStream(wxOutputStream& s, wxEOL mode)
 313   : m_output(s)
 314 #endif
 315 {
 316     m_mode = mode;
 317     if (m_mode == wxEOL_NATIVE)
 318     {
 319 #if defined(__WXMSW__) || defined(__WXPM__)
 320         m_mode = wxEOL_DOS;
 321 #elif defined(__WXMAC__) && !defined(__DARWIN__)
 322         m_mode = wxEOL_MAC;
 323 #else
 324         m_mode = wxEOL_UNIX;
 325 #endif
 326     }
 327 }
 328
 329 wxTextOutputStream::~wxTextOutputStream()
 330 {
 331 #if wxUSE_UNICODE
 332     delete m_conv;
 333 #endif // wxUSE_UNICODE
 334 }
 335
 336 void wxTextOutputStream::SetMode(wxEOL mode)
 337 {
 338     m_mode = mode;
 339     if (m_mode == wxEOL_NATIVE)
 340     {
 341 #if defined(__WXMSW__) || defined(__WXPM__)
 342         m_mode = wxEOL_DOS;
 343 #elif defined(__WXMAC__) && !defined(__DARWIN__)
 344         m_mode = wxEOL_MAC;
 345 #else
 346         m_mode = wxEOL_UNIX;
 347 #endif
 348     }
 349 }
 350
 351 void wxTextOutputStream::Write32(wxUint32 i)
 352 {
 353     wxString str;
 354     str.Printf(wxT("%u"), i);
 355
 356     WriteString(str);
 357 }
 358
 359 void wxTextOutputStream::Write16(wxUint16 i)
 360 {
 361     wxString str;
 362     str.Printf(wxT("%u"), (unsigned)i);
 363
 364     WriteString(str);
 365 }
 366
 367 void wxTextOutputStream::Write8(wxUint8 i)
 368 {
 369     wxString str;
 370     str.Printf(wxT("%u"), (unsigned)i);
 371
 372     WriteString(str);
 373 }
 374
 375 void wxTextOutputStream::WriteDouble(double d)
 376 {
 377     wxString str;
 378
 379     str.Printf(wxT("%f"), d);
 380     WriteString(str);
 381 }
 382
 383 void wxTextOutputStream::WriteString(const wxString& string)
 384 {
 385     size_t len = string.length();
 386
 387     wxString out;
 388     out.reserve(len);
 389
 390     for ( size_t i = 0; i < len; i++ )
 391     {
 392         const wxChar c = string[i];
 393         if ( c == wxT('\n') )
 394         {
 395             switch ( m_mode )
 396             {
 397                 case wxEOL_DOS:
 398                     out << _T("\r\n");
 399                     continue;
 400
 401                 case wxEOL_MAC:
 402                     out << _T('\r');
 403                     continue;
 404
 405                 default:
 406                     wxFAIL_MSG( _T("unknown EOL mode in wxTextOutputStream") );
 407                     // fall through
 408
 409                 case wxEOL_UNIX:
 410                     // don't treat '\n' specially
 411                     ;
 412             }
 413         }
 414
 415         out << c;
 416     }
 417
 418 #if wxUSE_UNICODE
 419     wxCharBuffer buffer = m_conv->cWC2MB(out, out.length(), &len);
 420     m_output.Write(buffer, len);
 421 #else
 422     m_output.Write(out.c_str(), out.length() );
 423 #endif
 424 }
 425
 426 wxTextOutputStream& wxTextOutputStream::PutChar(wxChar c)
 427 {
 428 #if wxUSE_UNICODE
 429     WriteString( wxString(&c, *m_conv, 1) );
 430 #else
 431     WriteString( wxString(&c, wxConvLocal, 1) );
 432 #endif
 433     return *this;
 434 }
 435
 436 wxTextOutputStream& wxTextOutputStream::operator<<(const wxChar *string)
 437 {
 438     WriteString( wxString(string) );
 439     return *this;
 440 }
 441
 442 wxTextOutputStream& wxTextOutputStream::operator<<(const wxString& string)
 443 {
 444     WriteString( string );
 445     return *this;
 446 }
 447
 448 wxTextOutputStream& wxTextOutputStream::operator<<(char c)
 449 {
 450     WriteString( wxString::FromAscii(c) );
 451
 452     return *this;
 453 }
 454
 455 #if wxUSE_UNICODE && wxWCHAR_T_IS_REAL_TYPE
 456
 457 wxTextOutputStream& wxTextOutputStream::operator<<(wchar_t wc)
 458 {
 459     WriteString( wxString(&wc, *m_conv, 1) );
 460
 461     return *this;
 462 }
 463
 464 #endif // wxUSE_UNICODE
 465
 466 wxTextOutputStream& wxTextOutputStream::operator<<(wxInt16 c)
 467 {
 468     wxString str;
 469     str.Printf(wxT("%d"), (signed int)c);
 470     WriteString(str);
 471
 472     return *this;
 473 }
 474
 475 wxTextOutputStream& wxTextOutputStream::operator<<(wxInt32 c)
 476 {
 477     wxString str;
 478     str.Printf(wxT("%ld"), (signed long)c);
 479     WriteString(str);
 480
 481     return *this;
 482 }
 483
 484 wxTextOutputStream& wxTextOutputStream::operator<<(wxUint16 c)
 485 {
 486     wxString str;
 487     str.Printf(wxT("%u"), (unsigned int)c);
 488     WriteString(str);
 489
 490     return *this;
 491 }
 492
 493 wxTextOutputStream& wxTextOutputStream::operator<<(wxUint32 c)
 494 {
 495     wxString str;
 496     str.Printf(wxT("%lu"), (unsigned long)c);
 497     WriteString(str);
 498
 499     return *this;
 500 }
 501
 502 wxTextOutputStream &wxTextOutputStream::operator<<(double f)
 503 {
 504     WriteDouble(f);
 505     return *this;
 506 }
 507
 508 wxTextOutputStream& wxTextOutputStream::operator<<(float f)
 509 {
 510     WriteDouble((double)f);
 511     return *this;
 512 }
 513
 514 wxTextOutputStream &endl( wxTextOutputStream &stream )
 515 {
 516     return stream.PutChar(wxT('\n'));
 517 }
 518
 519 #endif
 520   // wxUSE_STREAMS