src/common/txtstrm.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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         int retlen = (int) m_conv->MB2WC(wbuf, m_lastBytes, 2); // returns -1 for failure
  83         if(retlen >= 0) // res == 0 could happen for '\0' char
  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 wxString wxTextInputStream::ReadString()
 182 {
 183     return ReadLine();
 184 }
 185
 186 wxString wxTextInputStream::ReadLine()
 187 {
 188     wxString line;
 189
 190     while ( !m_input.Eof() )
 191     {
 192         wxChar c = NextChar();
 193         if(c == wxEOT)
 194             break;
 195
 196         if ( !m_input )
 197             break;
 198
 199         if (EatEOL(c))
 200             break;
 201
 202         line += c;
 203     }
 204
 205     return line;
 206 }
 207
 208 wxString wxTextInputStream::ReadWord()
 209 {
 210     wxString word;
 211
 212     if ( !m_input )
 213         return word;
 214
 215     wxChar c = NextNonSeparators();
 216     if ( !c )
 217         return word;
 218
 219     word += c;
 220
 221     while ( !m_input.Eof() )
 222     {
 223         c = NextChar();
 224         if(c == wxEOT)
 225             break;
 226
 227         if (m_separators.Contains(c))
 228             break;
 229
 230         if (EatEOL(c))
 231             break;
 232
 233         word += c;
 234     }
 235
 236     return word;
 237 }
 238
 239 wxTextInputStream& wxTextInputStream::operator>>(wxString& word)
 240 {
 241     word = ReadWord();
 242     return *this;
 243 }
 244
 245 wxTextInputStream& wxTextInputStream::operator>>(char& c)
 246 {
 247     c = m_input.GetC();
 248     if(m_input.LastRead() <= 0) c = 0;
 249
 250     if (EatEOL(c))
 251         c = '\n';
 252
 253     return *this;
 254 }
 255
 256 #if wxUSE_UNICODE && wxWCHAR_T_IS_REAL_TYPE
 257
 258 wxTextInputStream& wxTextInputStream::operator>>(wchar_t& wc)
 259 {
 260     wc = GetChar();
 261
 262     return *this;
 263 }
 264
 265 #endif // wxUSE_UNICODE
 266
 267 wxTextInputStream& wxTextInputStream::operator>>(wxInt16& i)
 268 {
 269     i = (wxInt16)Read16();
 270     return *this;
 271 }
 272
 273 wxTextInputStream& wxTextInputStream::operator>>(wxInt32& i)
 274 {
 275     i = (wxInt32)Read32();
 276     return *this;
 277 }
 278
 279 wxTextInputStream& wxTextInputStream::operator>>(wxUint16& i)
 280 {
 281     i = Read16();
 282     return *this;
 283 }
 284
 285 wxTextInputStream& wxTextInputStream::operator>>(wxUint32& i)
 286 {
 287     i = Read32();
 288     return *this;
 289 }
 290
 291 wxTextInputStream& wxTextInputStream::operator>>(double& i)
 292 {
 293     i = ReadDouble();
 294     return *this;
 295 }
 296
 297 wxTextInputStream& wxTextInputStream::operator>>(float& f)
 298 {
 299     f = (float)ReadDouble();
 300     return *this;
 301 }
 302
 303
 304
 305 #if wxUSE_UNICODE
 306 wxTextOutputStream::wxTextOutputStream(wxOutputStream& s,
 307                                        wxEOL mode,
 308                                        const wxMBConv& conv)
 309   : m_output(s), m_conv(conv.Clone())
 310 #else
 311 wxTextOutputStream::wxTextOutputStream(wxOutputStream& s, wxEOL mode)
 312   : m_output(s)
 313 #endif
 314 {
 315     m_mode = mode;
 316     if (m_mode == wxEOL_NATIVE)
 317     {
 318 #if defined(__WXMSW__) || defined(__WXPM__)
 319         m_mode = wxEOL_DOS;
 320 #elif defined(__WXMAC__) && !defined(__DARWIN__)
 321         m_mode = wxEOL_MAC;
 322 #else
 323         m_mode = wxEOL_UNIX;
 324 #endif
 325     }
 326 }
 327
 328 wxTextOutputStream::~wxTextOutputStream()
 329 {
 330 #if wxUSE_UNICODE
 331     delete m_conv;
 332 #endif // wxUSE_UNICODE
 333 }
 334
 335 void wxTextOutputStream::SetMode(wxEOL mode)
 336 {
 337     m_mode = mode;
 338     if (m_mode == wxEOL_NATIVE)
 339     {
 340 #if defined(__WXMSW__) || defined(__WXPM__)
 341         m_mode = wxEOL_DOS;
 342 #elif defined(__WXMAC__) && !defined(__DARWIN__)
 343         m_mode = wxEOL_MAC;
 344 #else
 345         m_mode = wxEOL_UNIX;
 346 #endif
 347     }
 348 }
 349
 350 void wxTextOutputStream::Write32(wxUint32 i)
 351 {
 352     wxString str;
 353     str.Printf(wxT("%u"), i);
 354
 355     WriteString(str);
 356 }
 357
 358 void wxTextOutputStream::Write16(wxUint16 i)
 359 {
 360     wxString str;
 361     str.Printf(wxT("%u"), (unsigned)i);
 362
 363     WriteString(str);
 364 }
 365
 366 void wxTextOutputStream::Write8(wxUint8 i)
 367 {
 368     wxString str;
 369     str.Printf(wxT("%u"), (unsigned)i);
 370
 371     WriteString(str);
 372 }
 373
 374 void wxTextOutputStream::WriteDouble(double d)
 375 {
 376     wxString str;
 377
 378     str.Printf(wxT("%f"), d);
 379     WriteString(str);
 380 }
 381
 382 void wxTextOutputStream::WriteString(const wxString& string)
 383 {
 384     size_t len = string.length();
 385
 386     wxString out;
 387     out.reserve(len);
 388
 389     for ( size_t i = 0; i < len; i++ )
 390     {
 391         const wxChar c = string[i];
 392         if ( c == wxT('\n') )
 393         {
 394             switch ( m_mode )
 395             {
 396                 case wxEOL_DOS:
 397                     out << _T("\r\n");
 398                     continue;
 399
 400                 case wxEOL_MAC:
 401                     out << _T('\r');
 402                     continue;
 403
 404                 default:
 405                     wxFAIL_MSG( _T("unknown EOL mode in wxTextOutputStream") );
 406                     // fall through
 407
 408                 case wxEOL_UNIX:
 409                     // don't treat '\n' specially
 410                     ;
 411             }
 412         }
 413
 414         out << c;
 415     }
 416
 417     // We must not write the trailing NULL here
 418 #if wxUSE_UNICODE
 419     wxCharBuffer buffer = m_conv->cWC2MB( out );
 420     m_output.Write( (const char*) buffer, strlen( (const char*) buffer ) );
 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