| 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 | |
| 23 | #ifndef WX_PRECOMP |
| 24 | #include "wx/crt.h" |
| 25 | #endif |
| 26 | |
| 27 | #include <ctype.h> |
| 28 | |
| 29 | // ---------------------------------------------------------------------------- |
| 30 | // wxTextInputStream |
| 31 | // ---------------------------------------------------------------------------- |
| 32 | |
| 33 | #if wxUSE_UNICODE |
| 34 | wxTextInputStream::wxTextInputStream(wxInputStream &s, |
| 35 | const wxString &sep, |
| 36 | const wxMBConv& conv) |
| 37 | : m_input(s), m_separators(sep), m_conv(conv.Clone()) |
| 38 | { |
| 39 | memset((void*)m_lastBytes, 0, 10); |
| 40 | } |
| 41 | #else |
| 42 | wxTextInputStream::wxTextInputStream(wxInputStream &s, const wxString &sep) |
| 43 | : m_input(s), m_separators(sep) |
| 44 | { |
| 45 | memset((void*)m_lastBytes, 0, 10); |
| 46 | } |
| 47 | #endif |
| 48 | |
| 49 | wxTextInputStream::~wxTextInputStream() |
| 50 | { |
| 51 | #if wxUSE_UNICODE |
| 52 | delete m_conv; |
| 53 | #endif // wxUSE_UNICODE |
| 54 | } |
| 55 | |
| 56 | void wxTextInputStream::UngetLast() |
| 57 | { |
| 58 | size_t byteCount = 0; |
| 59 | while(m_lastBytes[byteCount]) // pseudo ANSI strlen (even for Unicode!) |
| 60 | byteCount++; |
| 61 | m_input.Ungetch(m_lastBytes, byteCount); |
| 62 | memset((void*)m_lastBytes, 0, 10); |
| 63 | } |
| 64 | |
| 65 | wxChar wxTextInputStream::NextChar() |
| 66 | { |
| 67 | #if wxUSE_UNICODE |
| 68 | wxChar wbuf[2]; |
| 69 | memset((void*)m_lastBytes, 0, 10); |
| 70 | for(size_t inlen = 0; inlen < 9; inlen++) |
| 71 | { |
| 72 | // actually read the next character |
| 73 | m_lastBytes[inlen] = m_input.GetC(); |
| 74 | |
| 75 | if(m_input.LastRead() <= 0) |
| 76 | return wxEOT; |
| 77 | |
| 78 | switch ( m_conv->ToWChar(wbuf, WXSIZEOF(wbuf), m_lastBytes, inlen + 1) ) |
| 79 | { |
| 80 | case 0: |
| 81 | // this is a bug in converter object as it should either fail |
| 82 | // or decode non-empty string to something non-empty |
| 83 | wxFAIL_MSG("ToWChar() can't return 0 for non-empty input"); |
| 84 | break; |
| 85 | |
| 86 | case wxCONV_FAILED: |
| 87 | // the buffer probably doesn't contain enough bytes to decode |
| 88 | // as a complete character, try with more bytes |
| 89 | break; |
| 90 | |
| 91 | default: |
| 92 | // if we couldn't decode a single character during the last |
| 93 | // loop iteration we shouldn't be able to decode 2 or more of |
| 94 | // them with an extra single byte, something fishy is going on |
| 95 | wxFAIL_MSG("unexpected decoding result"); |
| 96 | // fall through nevertheless and return at least something |
| 97 | |
| 98 | case 1: |
| 99 | // we finally decoded a character |
| 100 | return wbuf[0]; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | // there should be no encoding which requires more than nine bytes for one |
| 105 | // character so something must be wrong with our conversion but we have no |
| 106 | // way to signal it from here |
| 107 | return wxEOT; |
| 108 | #else |
| 109 | m_lastBytes[0] = m_input.GetC(); |
| 110 | |
| 111 | if(m_input.LastRead() <= 0) |
| 112 | return wxEOT; |
| 113 | |
| 114 | return m_lastBytes[0]; |
| 115 | #endif |
| 116 | |
| 117 | } |
| 118 | |
| 119 | wxChar wxTextInputStream::NextNonSeparators() |
| 120 | { |
| 121 | for (;;) |
| 122 | { |
| 123 | wxChar c = NextChar(); |
| 124 | if (c == wxEOT) return (wxChar) 0; |
| 125 | |
| 126 | if (c != wxT('\n') && |
| 127 | c != wxT('\r') && |
| 128 | m_separators.Find(c) < 0) |
| 129 | return c; |
| 130 | } |
| 131 | |
| 132 | } |
| 133 | |
| 134 | bool wxTextInputStream::EatEOL(const wxChar &c) |
| 135 | { |
| 136 | if (c == wxT('\n')) return true; // eat on UNIX |
| 137 | |
| 138 | if (c == wxT('\r')) // eat on both Mac and DOS |
| 139 | { |
| 140 | wxChar c2 = NextChar(); |
| 141 | if(c2 == wxEOT) return true; // end of stream reached, had enough :-) |
| 142 | |
| 143 | if (c2 != wxT('\n')) UngetLast(); // Don't eat on Mac |
| 144 | return true; |
| 145 | } |
| 146 | |
| 147 | return false; |
| 148 | } |
| 149 | |
| 150 | wxUint32 wxTextInputStream::Read32(int base) |
| 151 | { |
| 152 | wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") ); |
| 153 | if(!m_input) return 0; |
| 154 | |
| 155 | wxString word = ReadWord(); |
| 156 | if(word.empty()) |
| 157 | return 0; |
| 158 | return wxStrtoul(word.c_str(), 0, base); |
| 159 | } |
| 160 | |
| 161 | wxUint16 wxTextInputStream::Read16(int base) |
| 162 | { |
| 163 | return (wxUint16)Read32(base); |
| 164 | } |
| 165 | |
| 166 | wxUint8 wxTextInputStream::Read8(int base) |
| 167 | { |
| 168 | return (wxUint8)Read32(base); |
| 169 | } |
| 170 | |
| 171 | wxInt32 wxTextInputStream::Read32S(int base) |
| 172 | { |
| 173 | wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") ); |
| 174 | if(!m_input) return 0; |
| 175 | |
| 176 | wxString word = ReadWord(); |
| 177 | if(word.empty()) |
| 178 | return 0; |
| 179 | return wxStrtol(word.c_str(), 0, base); |
| 180 | } |
| 181 | |
| 182 | wxInt16 wxTextInputStream::Read16S(int base) |
| 183 | { |
| 184 | return (wxInt16)Read32S(base); |
| 185 | } |
| 186 | |
| 187 | wxInt8 wxTextInputStream::Read8S(int base) |
| 188 | { |
| 189 | return (wxInt8)Read32S(base); |
| 190 | } |
| 191 | |
| 192 | double wxTextInputStream::ReadDouble() |
| 193 | { |
| 194 | if(!m_input) return 0; |
| 195 | wxString word = ReadWord(); |
| 196 | if(word.empty()) |
| 197 | return 0; |
| 198 | return wxStrtod(word.c_str(), 0); |
| 199 | } |
| 200 | |
| 201 | #if WXWIN_COMPATIBILITY_2_6 |
| 202 | |
| 203 | wxString wxTextInputStream::ReadString() |
| 204 | { |
| 205 | return ReadLine(); |
| 206 | } |
| 207 | |
| 208 | #endif // WXWIN_COMPATIBILITY_2_6 |
| 209 | |
| 210 | wxString wxTextInputStream::ReadLine() |
| 211 | { |
| 212 | wxString line; |
| 213 | |
| 214 | while ( !m_input.Eof() ) |
| 215 | { |
| 216 | wxChar c = NextChar(); |
| 217 | if(c == wxEOT) |
| 218 | break; |
| 219 | |
| 220 | if (EatEOL(c)) |
| 221 | break; |
| 222 | |
| 223 | line += c; |
| 224 | } |
| 225 | |
| 226 | return line; |
| 227 | } |
| 228 | |
| 229 | wxString wxTextInputStream::ReadWord() |
| 230 | { |
| 231 | wxString word; |
| 232 | |
| 233 | if ( !m_input ) |
| 234 | return word; |
| 235 | |
| 236 | wxChar c = NextNonSeparators(); |
| 237 | if ( !c ) |
| 238 | return word; |
| 239 | |
| 240 | word += c; |
| 241 | |
| 242 | while ( !m_input.Eof() ) |
| 243 | { |
| 244 | c = NextChar(); |
| 245 | if(c == wxEOT) |
| 246 | break; |
| 247 | |
| 248 | if (m_separators.Find(c) >= 0) |
| 249 | break; |
| 250 | |
| 251 | if (EatEOL(c)) |
| 252 | break; |
| 253 | |
| 254 | word += c; |
| 255 | } |
| 256 | |
| 257 | return word; |
| 258 | } |
| 259 | |
| 260 | wxTextInputStream& wxTextInputStream::operator>>(wxString& word) |
| 261 | { |
| 262 | word = ReadWord(); |
| 263 | return *this; |
| 264 | } |
| 265 | |
| 266 | wxTextInputStream& wxTextInputStream::operator>>(char& c) |
| 267 | { |
| 268 | c = m_input.GetC(); |
| 269 | if(m_input.LastRead() <= 0) c = 0; |
| 270 | |
| 271 | if (EatEOL(c)) |
| 272 | c = '\n'; |
| 273 | |
| 274 | return *this; |
| 275 | } |
| 276 | |
| 277 | #if wxUSE_UNICODE && wxWCHAR_T_IS_REAL_TYPE |
| 278 | |
| 279 | wxTextInputStream& wxTextInputStream::operator>>(wchar_t& wc) |
| 280 | { |
| 281 | wc = GetChar(); |
| 282 | |
| 283 | return *this; |
| 284 | } |
| 285 | |
| 286 | #endif // wxUSE_UNICODE |
| 287 | |
| 288 | wxTextInputStream& wxTextInputStream::operator>>(wxInt16& i) |
| 289 | { |
| 290 | i = (wxInt16)Read16(); |
| 291 | return *this; |
| 292 | } |
| 293 | |
| 294 | wxTextInputStream& wxTextInputStream::operator>>(wxInt32& i) |
| 295 | { |
| 296 | i = (wxInt32)Read32(); |
| 297 | return *this; |
| 298 | } |
| 299 | |
| 300 | wxTextInputStream& wxTextInputStream::operator>>(wxUint16& i) |
| 301 | { |
| 302 | i = Read16(); |
| 303 | return *this; |
| 304 | } |
| 305 | |
| 306 | wxTextInputStream& wxTextInputStream::operator>>(wxUint32& i) |
| 307 | { |
| 308 | i = Read32(); |
| 309 | return *this; |
| 310 | } |
| 311 | |
| 312 | wxTextInputStream& wxTextInputStream::operator>>(double& i) |
| 313 | { |
| 314 | i = ReadDouble(); |
| 315 | return *this; |
| 316 | } |
| 317 | |
| 318 | wxTextInputStream& wxTextInputStream::operator>>(float& f) |
| 319 | { |
| 320 | f = (float)ReadDouble(); |
| 321 | return *this; |
| 322 | } |
| 323 | |
| 324 | |
| 325 | |
| 326 | #if wxUSE_UNICODE |
| 327 | wxTextOutputStream::wxTextOutputStream(wxOutputStream& s, |
| 328 | wxEOL mode, |
| 329 | const wxMBConv& conv) |
| 330 | : m_output(s), m_conv(conv.Clone()) |
| 331 | #else |
| 332 | wxTextOutputStream::wxTextOutputStream(wxOutputStream& s, wxEOL mode) |
| 333 | : m_output(s) |
| 334 | #endif |
| 335 | { |
| 336 | m_mode = mode; |
| 337 | if (m_mode == wxEOL_NATIVE) |
| 338 | { |
| 339 | #if defined(__WINDOWS__) || defined(__WXPM__) |
| 340 | m_mode = wxEOL_DOS; |
| 341 | #else |
| 342 | m_mode = wxEOL_UNIX; |
| 343 | #endif |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | wxTextOutputStream::~wxTextOutputStream() |
| 348 | { |
| 349 | #if wxUSE_UNICODE |
| 350 | delete m_conv; |
| 351 | #endif // wxUSE_UNICODE |
| 352 | } |
| 353 | |
| 354 | void wxTextOutputStream::SetMode(wxEOL mode) |
| 355 | { |
| 356 | m_mode = mode; |
| 357 | if (m_mode == wxEOL_NATIVE) |
| 358 | { |
| 359 | #if defined(__WINDOWS__) || defined(__WXPM__) |
| 360 | m_mode = wxEOL_DOS; |
| 361 | #else |
| 362 | m_mode = wxEOL_UNIX; |
| 363 | #endif |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | void wxTextOutputStream::Write32(wxUint32 i) |
| 368 | { |
| 369 | wxString str; |
| 370 | str.Printf(wxT("%u"), i); |
| 371 | |
| 372 | WriteString(str); |
| 373 | } |
| 374 | |
| 375 | void wxTextOutputStream::Write16(wxUint16 i) |
| 376 | { |
| 377 | wxString str; |
| 378 | str.Printf(wxT("%u"), (unsigned)i); |
| 379 | |
| 380 | WriteString(str); |
| 381 | } |
| 382 | |
| 383 | void wxTextOutputStream::Write8(wxUint8 i) |
| 384 | { |
| 385 | wxString str; |
| 386 | str.Printf(wxT("%u"), (unsigned)i); |
| 387 | |
| 388 | WriteString(str); |
| 389 | } |
| 390 | |
| 391 | void wxTextOutputStream::WriteDouble(double d) |
| 392 | { |
| 393 | wxString str; |
| 394 | |
| 395 | str.Printf(wxT("%f"), d); |
| 396 | WriteString(str); |
| 397 | } |
| 398 | |
| 399 | void wxTextOutputStream::WriteString(const wxString& string) |
| 400 | { |
| 401 | size_t len = string.length(); |
| 402 | |
| 403 | wxString out; |
| 404 | out.reserve(len); |
| 405 | |
| 406 | for ( size_t i = 0; i < len; i++ ) |
| 407 | { |
| 408 | const wxChar c = string[i]; |
| 409 | if ( c == wxT('\n') ) |
| 410 | { |
| 411 | switch ( m_mode ) |
| 412 | { |
| 413 | case wxEOL_DOS: |
| 414 | out << wxT("\r\n"); |
| 415 | continue; |
| 416 | |
| 417 | case wxEOL_MAC: |
| 418 | out << wxT('\r'); |
| 419 | continue; |
| 420 | |
| 421 | default: |
| 422 | wxFAIL_MSG( wxT("unknown EOL mode in wxTextOutputStream") ); |
| 423 | // fall through |
| 424 | |
| 425 | case wxEOL_UNIX: |
| 426 | // don't treat '\n' specially |
| 427 | ; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | out << c; |
| 432 | } |
| 433 | |
| 434 | #if wxUSE_UNICODE |
| 435 | // FIXME-UTF8: use wxCharBufferWithLength if/when we have it |
| 436 | wxCharBuffer buffer = m_conv->cWC2MB(out.wc_str(), out.length(), &len); |
| 437 | m_output.Write(buffer, len); |
| 438 | #else |
| 439 | m_output.Write(out.c_str(), out.length() ); |
| 440 | #endif |
| 441 | } |
| 442 | |
| 443 | wxTextOutputStream& wxTextOutputStream::PutChar(wxChar c) |
| 444 | { |
| 445 | #if wxUSE_UNICODE |
| 446 | WriteString( wxString(&c, *m_conv, 1) ); |
| 447 | #else |
| 448 | WriteString( wxString(&c, wxConvLocal, 1) ); |
| 449 | #endif |
| 450 | return *this; |
| 451 | } |
| 452 | |
| 453 | void wxTextOutputStream::Flush() |
| 454 | { |
| 455 | #if wxUSE_UNICODE |
| 456 | const size_t len = m_conv->FromWChar(NULL, 0, L"", 1); |
| 457 | if ( len > m_conv->GetMBNulLen() ) |
| 458 | { |
| 459 | wxCharBuffer buf(len); |
| 460 | m_conv->FromWChar(buf.data(), len, L"", 1); |
| 461 | m_output.Write(buf, len - m_conv->GetMBNulLen()); |
| 462 | } |
| 463 | #endif // wxUSE_UNICODE |
| 464 | } |
| 465 | |
| 466 | wxTextOutputStream& wxTextOutputStream::operator<<(const wxString& string) |
| 467 | { |
| 468 | WriteString( string ); |
| 469 | return *this; |
| 470 | } |
| 471 | |
| 472 | wxTextOutputStream& wxTextOutputStream::operator<<(char c) |
| 473 | { |
| 474 | WriteString( wxString::FromAscii(c) ); |
| 475 | |
| 476 | return *this; |
| 477 | } |
| 478 | |
| 479 | #if wxUSE_UNICODE && wxWCHAR_T_IS_REAL_TYPE |
| 480 | |
| 481 | wxTextOutputStream& wxTextOutputStream::operator<<(wchar_t wc) |
| 482 | { |
| 483 | WriteString( wxString(&wc, *m_conv, 1) ); |
| 484 | |
| 485 | return *this; |
| 486 | } |
| 487 | |
| 488 | #endif // wxUSE_UNICODE |
| 489 | |
| 490 | wxTextOutputStream& wxTextOutputStream::operator<<(wxInt16 c) |
| 491 | { |
| 492 | wxString str; |
| 493 | str.Printf(wxT("%d"), (signed int)c); |
| 494 | WriteString(str); |
| 495 | |
| 496 | return *this; |
| 497 | } |
| 498 | |
| 499 | wxTextOutputStream& wxTextOutputStream::operator<<(wxInt32 c) |
| 500 | { |
| 501 | wxString str; |
| 502 | str.Printf(wxT("%ld"), (signed long)c); |
| 503 | WriteString(str); |
| 504 | |
| 505 | return *this; |
| 506 | } |
| 507 | |
| 508 | wxTextOutputStream& wxTextOutputStream::operator<<(wxUint16 c) |
| 509 | { |
| 510 | wxString str; |
| 511 | str.Printf(wxT("%u"), (unsigned int)c); |
| 512 | WriteString(str); |
| 513 | |
| 514 | return *this; |
| 515 | } |
| 516 | |
| 517 | wxTextOutputStream& wxTextOutputStream::operator<<(wxUint32 c) |
| 518 | { |
| 519 | wxString str; |
| 520 | str.Printf(wxT("%lu"), (unsigned long)c); |
| 521 | WriteString(str); |
| 522 | |
| 523 | return *this; |
| 524 | } |
| 525 | |
| 526 | wxTextOutputStream &wxTextOutputStream::operator<<(double f) |
| 527 | { |
| 528 | WriteDouble(f); |
| 529 | return *this; |
| 530 | } |
| 531 | |
| 532 | wxTextOutputStream& wxTextOutputStream::operator<<(float f) |
| 533 | { |
| 534 | WriteDouble((double)f); |
| 535 | return *this; |
| 536 | } |
| 537 | |
| 538 | wxTextOutputStream &endl( wxTextOutputStream &stream ) |
| 539 | { |
| 540 | return stream.PutChar(wxT('\n')); |
| 541 | } |
| 542 | |
| 543 | #endif |
| 544 | // wxUSE_STREAMS |