dlls/msvcrt/console.c

   1 /*
   2  * msvcrt.dll console functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * Note: init and free don't need MT locking since they are called at DLL
  21  * (de)attachment time, which is synchronised for us
  22  */
  23
  24 #include "msvcrt.h"
  25 #include "winnls.h"
  26 #include "wincon.h"
  27 #include "mtdll.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  31
  32 /* MT */
  33 #define LOCK_CONSOLE   _lock(_CONIO_LOCK)
  34 #define UNLOCK_CONSOLE _unlock(_CONIO_LOCK)
  35
  36 static HANDLE MSVCRT_console_in = INVALID_HANDLE_VALUE;
  37 static HANDLE MSVCRT_console_out= INVALID_HANDLE_VALUE;
  38 static int __MSVCRT_console_buffer = EOF;
  39 static wchar_t __MSVCRT_console_buffer_w = WEOF;
  40
  41 /* INTERNAL: Initialise console handles */
  42 void msvcrt_init_console(void)
  43 {
  44   TRACE(":Opening console handles\n");
  45
  46   MSVCRT_console_in = CreateFileA("CONIN$", GENERIC_WRITE|GENERIC_READ,
  47                                   FILE_SHARE_WRITE|FILE_SHARE_READ,
  48                                   NULL, OPEN_EXISTING, 0, NULL);
  49   MSVCRT_console_out= CreateFileA("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE,
  50                                     NULL, OPEN_EXISTING, 0, NULL);
  51
  52   if ((MSVCRT_console_in == INVALID_HANDLE_VALUE) ||
  53       (MSVCRT_console_out== INVALID_HANDLE_VALUE))
  54     WARN(":Console handle Initialisation FAILED!\n");
  55 }
  56
  57 /* INTERNAL: Free console handles */
  58 void msvcrt_free_console(void)
  59 {
  60   TRACE(":Closing console handles\n");
  61   CloseHandle(MSVCRT_console_in);
  62   CloseHandle(MSVCRT_console_out);
  63 }
  64
  65 /*********************************************************************
  66  *              _cputs (MSVCRT.@)
  67  */
  68 int CDECL _cputs(const char* str)
  69 {
  70   DWORD count;
  71   int len, retval = -1;
  72
  73   if (!MSVCRT_CHECK_PMT(str != NULL)) return -1;
  74   len = strlen(str);
  75
  76   LOCK_CONSOLE;
  77   if (WriteConsoleA(MSVCRT_console_out, str, len, &count, NULL)
  78       && count == len)
  79     retval = 0;
  80   UNLOCK_CONSOLE;
  81   return retval;
  82 }
  83
  84 /*********************************************************************
  85  *              _cputws (MSVCRT.@)
  86  */
  87 int CDECL _cputws(const wchar_t* str)
  88 {
  89   DWORD count;
  90   int len, retval = -1;
  91
  92   if (!MSVCRT_CHECK_PMT(str != NULL)) return -1;
  93   len = MSVCRT_wcslen(str);
  94
  95   LOCK_CONSOLE;
  96   if (WriteConsoleW(MSVCRT_console_out, str, len, &count, NULL)
  97       && count == len)
  98     retval = 0;
  99   UNLOCK_CONSOLE;
 100   return retval;
 101 }
 102
 103 #define NORMAL_CHAR     0
 104 #define ALT_CHAR        1
 105 #define CTRL_CHAR       2
 106 #define SHIFT_CHAR      3
 107
 108 static const struct {unsigned short vk; unsigned char ch[4][2];} enh_map[] = {
 109     {0x47, {{0xE0, 0x47}, {0x00, 0x97}, {0xE0, 0x77}, {0xE0, 0x47}}},
 110     {0x48, {{0xE0, 0x48}, {0x00, 0x98}, {0xE0, 0x8D}, {0xE0, 0x48}}},
 111     {0x49, {{0xE0, 0x49}, {0x00, 0x99}, {0xE0, 0x86}, {0xE0, 0x49}}},
 112     {0x4B, {{0xE0, 0x4B}, {0x00, 0x9B}, {0xE0, 0x73}, {0xE0, 0x4B}}},
 113     {0x4D, {{0xE0, 0x4D}, {0x00, 0x9D}, {0xE0, 0x74}, {0xE0, 0x4D}}},
 114     {0x4F, {{0xE0, 0x4F}, {0x00, 0x9F}, {0xE0, 0x75}, {0xE0, 0x4F}}},
 115     {0x50, {{0xE0, 0x50}, {0x00, 0xA0}, {0xE0, 0x91}, {0xE0, 0x50}}},
 116     {0x51, {{0xE0, 0x51}, {0x00, 0xA1}, {0xE0, 0x76}, {0xE0, 0x51}}},
 117     {0x52, {{0xE0, 0x52}, {0x00, 0xA2}, {0xE0, 0x92}, {0xE0, 0x52}}},
 118     {0x53, {{0xE0, 0x53}, {0x00, 0xA3}, {0xE0, 0x93}, {0xE0, 0x53}}},
 119 };
 120
 121 static BOOL handle_enhanced_keys(INPUT_RECORD *ir, unsigned char *ch1, unsigned char *ch2)
 122 {
 123     int i;
 124
 125     for (i = 0; i < ARRAY_SIZE(enh_map); i++)
 126     {
 127         if (ir->Event.KeyEvent.wVirtualScanCode == enh_map[i].vk)
 128         {
 129             unsigned idx;
 130
 131             if (ir->Event.KeyEvent.dwControlKeyState & (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED))
 132                 idx = ALT_CHAR;
 133             else if (ir->Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED) )
 134                 idx = CTRL_CHAR;
 135             else if (ir->Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED)
 136                 idx = SHIFT_CHAR;
 137             else
 138                 idx = NORMAL_CHAR;
 139
 140             *ch1 = enh_map[i].ch[idx][0];
 141             *ch2 = enh_map[i].ch[idx][1];
 142             return TRUE;
 143         }
 144     }
 145
 146     WARN("Unmapped char keyState=%x vk=%x\n",
 147             ir->Event.KeyEvent.dwControlKeyState, ir->Event.KeyEvent.wVirtualScanCode);
 148     return FALSE;
 149 }
 150
 151 /*********************************************************************
 152  *              _getch_nolock (MSVCR80.@)
 153  */
 154 int CDECL _getch_nolock(void)
 155 {
 156   int retval = EOF;
 157
 158   if (__MSVCRT_console_buffer != EOF)
 159   {
 160     retval = __MSVCRT_console_buffer;
 161     __MSVCRT_console_buffer = EOF;
 162   }
 163   else
 164   {
 165     INPUT_RECORD ir;
 166     DWORD count;
 167     DWORD mode = 0;
 168
 169     GetConsoleMode(MSVCRT_console_in, &mode);
 170     if(mode)
 171       SetConsoleMode(MSVCRT_console_in, 0);
 172
 173     do {
 174       if (ReadConsoleInputA(MSVCRT_console_in, &ir, 1, &count))
 175       {
 176         /* Only interested in ASCII chars */
 177         if (ir.EventType == KEY_EVENT &&
 178             ir.Event.KeyEvent.bKeyDown)
 179         {
 180             unsigned char ch1, ch2;
 181
 182             if (ir.Event.KeyEvent.uChar.AsciiChar)
 183             {
 184                 retval = ir.Event.KeyEvent.uChar.AsciiChar;
 185                 break;
 186             }
 187
 188             if (handle_enhanced_keys(&ir, &ch1, &ch2))
 189             {
 190                 retval = ch1;
 191                 __MSVCRT_console_buffer = ch2;
 192                 break;
 193             }
 194         }
 195       }
 196       else
 197         break;
 198     } while(1);
 199     if (mode)
 200       SetConsoleMode(MSVCRT_console_in, mode);
 201   }
 202   return retval;
 203 }
 204
 205 /*********************************************************************
 206  *              _getch (MSVCRT.@)
 207  */
 208 int CDECL _getch(void)
 209 {
 210     int ret;
 211
 212     LOCK_CONSOLE;
 213     ret = _getch_nolock();
 214     UNLOCK_CONSOLE;
 215     return ret;
 216 }
 217
 218 /*********************************************************************
 219  *              _getwch_nolock (MSVCR80.@)
 220  */
 221 wchar_t CDECL _getwch_nolock(void)
 222 {
 223     wchar_t retval = WEOF;
 224
 225     if (__MSVCRT_console_buffer_w != WEOF)
 226     {
 227         retval = __MSVCRT_console_buffer_w;
 228         __MSVCRT_console_buffer_w = WEOF;
 229     }
 230     else
 231     {
 232         INPUT_RECORD ir;
 233         DWORD count;
 234         DWORD mode = 0;
 235
 236         GetConsoleMode(MSVCRT_console_in, &mode);
 237         if(mode)
 238             SetConsoleMode(MSVCRT_console_in, 0);
 239
 240         do {
 241             if (ReadConsoleInputW(MSVCRT_console_in, &ir, 1, &count))
 242             {
 243                 /* Only interested in ASCII chars */
 244                 if (ir.EventType == KEY_EVENT &&
 245                         ir.Event.KeyEvent.bKeyDown)
 246                 {
 247                     unsigned char ch1, ch2;
 248
 249                     if (ir.Event.KeyEvent.uChar.UnicodeChar)
 250                     {
 251                         retval = ir.Event.KeyEvent.uChar.UnicodeChar;
 252                         break;
 253                     }
 254
 255                     if (handle_enhanced_keys(&ir, &ch1, &ch2))
 256                     {
 257                         retval = ch1;
 258                         __MSVCRT_console_buffer_w = ch2;
 259                         break;
 260                     }
 261                 }
 262             }
 263             else
 264                 break;
 265         } while(1);
 266         if (mode)
 267             SetConsoleMode(MSVCRT_console_in, mode);
 268     }
 269     return retval;
 270 }
 271
 272 /*********************************************************************
 273  *              _getwch (MSVCRT.@)
 274  */
 275 wchar_t CDECL _getwch(void)
 276 {
 277     wchar_t ret;
 278
 279     LOCK_CONSOLE;
 280     ret = _getwch_nolock();
 281     UNLOCK_CONSOLE;
 282     return ret;
 283 }
 284
 285 /*********************************************************************
 286  *              _putch_nolock (MSVCR80.@)
 287  */
 288 int CDECL _putch_nolock(int c)
 289 {
 290   DWORD count;
 291   if (WriteConsoleA(MSVCRT_console_out, &c, 1, &count, NULL) && count == 1)
 292     return c;
 293   return EOF;
 294 }
 295
 296 /*********************************************************************
 297  *              _putch (MSVCRT.@)
 298  */
 299 int CDECL _putch(int c)
 300 {
 301     LOCK_CONSOLE;
 302     c = _putch_nolock(c);
 303     UNLOCK_CONSOLE;
 304     return c;
 305 }
 306
 307 /*********************************************************************
 308  *              _putwch_nolock (MSVCR80.@)
 309  */
 310 wchar_t CDECL _putwch_nolock(wchar_t c)
 311 {
 312     DWORD count;
 313     if (WriteConsoleW(MSVCRT_console_out, &c, 1, &count, NULL) && count==1)
 314         return c;
 315     return WEOF;
 316 }
 317
 318 /*********************************************************************
 319  *              _putwch (MSVCRT.@)
 320  */
 321 wchar_t CDECL _putwch(wchar_t c)
 322 {
 323     LOCK_CONSOLE;
 324     c = _putwch_nolock(c);
 325     UNLOCK_CONSOLE;
 326     return c;
 327 }
 328
 329 /*********************************************************************
 330  *              _getche_nolock (MSVCR80.@)
 331  */
 332 int CDECL _getche_nolock(void)
 333 {
 334   int retval;
 335   retval = _getch_nolock();
 336   if (retval != EOF)
 337     retval = _putch_nolock(retval);
 338   return retval;
 339 }
 340
 341 /*********************************************************************
 342  *              _getche (MSVCRT.@)
 343  */
 344 int CDECL _getche(void)
 345 {
 346     int ret;
 347
 348     LOCK_CONSOLE;
 349     ret = _getche_nolock();
 350     UNLOCK_CONSOLE;
 351     return ret;
 352 }
 353
 354 /*********************************************************************
 355  *              _getwche_nolock (MSVCR80.@)
 356  */
 357 wchar_t CDECL _getwche_nolock(void)
 358 {
 359     wchar_t wch;
 360     wch = _getch_nolock();
 361     if (wch == WEOF)
 362         return wch;
 363     return _putwch_nolock(wch);
 364 }
 365
 366 /*********************************************************************
 367  *              _getwche (MSVCRT.@)
 368  */
 369 wchar_t CDECL _getwche(void)
 370 {
 371     wchar_t ret;
 372
 373     LOCK_CONSOLE;
 374     ret = _getwche_nolock();
 375     UNLOCK_CONSOLE;
 376     return ret;
 377 }
 378
 379 /*********************************************************************
 380  *              _cgets (MSVCRT.@)
 381  */
 382 char* CDECL _cgets(char* str)
 383 {
 384   char *buf = str + 2;
 385   DWORD got;
 386   DWORD conmode = 0;
 387
 388   TRACE("(%p)\n", str);
 389   str[1] = 0; /* Length */
 390   LOCK_CONSOLE;
 391   GetConsoleMode(MSVCRT_console_in, &conmode);
 392   SetConsoleMode(MSVCRT_console_in, ENABLE_LINE_INPUT|ENABLE_ECHO_INPUT|ENABLE_PROCESSED_INPUT);
 393
 394   if(ReadConsoleA(MSVCRT_console_in, buf, str[0], &got, NULL)) {
 395     if(buf[got-2] == '\r') {
 396       buf[got-2] = 0;
 397       str[1] = got-2;
 398     }
 399     else if(got == 1 && buf[got-1] == '\n') {
 400       buf[0] = 0;
 401       str[1] = 0;
 402     }
 403     else if(got == str[0] && buf[got-1] == '\r') {
 404       buf[got-1] = 0;
 405       str[1] = got-1;
 406     }
 407     else
 408       str[1] = got;
 409   }
 410   else
 411     buf = NULL;
 412   SetConsoleMode(MSVCRT_console_in, conmode);
 413   UNLOCK_CONSOLE;
 414   return buf;
 415 }
 416
 417 /*********************************************************************
 418  *              _ungetch_nolock (MSVCRT.@)
 419  */
 420 int CDECL _ungetch_nolock(int c)
 421 {
 422   int retval = EOF;
 423   if (c != EOF && __MSVCRT_console_buffer == EOF)
 424     retval = __MSVCRT_console_buffer = c;
 425   return retval;
 426 }
 427
 428 /*********************************************************************
 429  *              _ungetch (MSVCRT.@)
 430  */
 431 int CDECL _ungetch(int c)
 432 {
 433     LOCK_CONSOLE;
 434     c = _ungetch_nolock(c);
 435     UNLOCK_CONSOLE;
 436     return c;
 437 }
 438
 439 /*********************************************************************
 440  *              _ungetwch_nolock (MSVCR80.@)
 441  */
 442 wchar_t CDECL _ungetwch_nolock(wchar_t c)
 443 {
 444     wchar_t retval = WEOF;
 445     if (c != WEOF && __MSVCRT_console_buffer_w == WEOF)
 446         retval = __MSVCRT_console_buffer_w = c;
 447     return retval;
 448 }
 449
 450 /*********************************************************************
 451  *              _ungetwch (MSVCRT.@)
 452  */
 453 wchar_t CDECL _ungetwch(wchar_t c)
 454 {
 455     LOCK_CONSOLE;
 456     c = _ungetwch_nolock(c);
 457     UNLOCK_CONSOLE;
 458     return c;
 459 }
 460
 461 /*********************************************************************
 462  *              _kbhit (MSVCRT.@)
 463  */
 464 int CDECL _kbhit(void)
 465 {
 466   int retval = 0;
 467
 468   LOCK_CONSOLE;
 469   if (__MSVCRT_console_buffer != EOF)
 470     retval = 1;
 471   else
 472   {
 473     /* FIXME: There has to be a faster way than this in Win32.. */
 474     INPUT_RECORD *ir = NULL;
 475     DWORD count = 0, i;
 476
 477     GetNumberOfConsoleInputEvents(MSVCRT_console_in, &count);
 478
 479     if (count && (ir = malloc(count * sizeof(INPUT_RECORD))) &&
 480         PeekConsoleInputA(MSVCRT_console_in, ir, count, &count))
 481       for(i = 0; i < count - 1; i++)
 482       {
 483         if (ir[i].EventType == KEY_EVENT &&
 484             ir[i].Event.KeyEvent.bKeyDown &&
 485             ir[i].Event.KeyEvent.uChar.AsciiChar)
 486         {
 487           retval = 1;
 488           break;
 489         }
 490       }
 491     free(ir);
 492   }
 493   UNLOCK_CONSOLE;
 494   return retval;
 495 }
 496
 497 static int puts_clbk_console_a(void *ctx, int len, const char *str)
 498 {
 499     LOCK_CONSOLE;
 500     if(!WriteConsoleA(MSVCRT_console_out, str, len, NULL, NULL))
 501         len = -1;
 502     UNLOCK_CONSOLE;
 503     return len;
 504 }
 505
 506 static int puts_clbk_console_w(void *ctx, int len, const wchar_t *str)
 507 {
 508     LOCK_CONSOLE;
 509     if(!WriteConsoleW(MSVCRT_console_out, str, len, NULL, NULL))
 510         len = -1;
 511     UNLOCK_CONSOLE;
 512     return len;
 513 }
 514
 515 /*********************************************************************
 516  *              _vcprintf (MSVCRT.@)
 517  */
 518 int CDECL _vcprintf(const char* format, __ms_va_list valist)
 519 {
 520     return pf_printf_a(puts_clbk_console_a, NULL, format, NULL, 0, arg_clbk_valist, NULL, &valist);
 521 }
 522
 523 /*********************************************************************
 524  *              _cprintf (MSVCRT.@)
 525  */
 526 int WINAPIV _cprintf(const char* format, ...)
 527 {
 528   int retval;
 529   __ms_va_list valist;
 530
 531   __ms_va_start( valist, format );
 532   retval = _vcprintf(format, valist);
 533   __ms_va_end(valist);
 534
 535   return retval;
 536 }
 537
 538
 539 /*********************************************************************
 540  *              _vcwprintf (MSVCRT.@)
 541  */
 542 int CDECL _vcwprintf(const wchar_t* format, __ms_va_list valist)
 543 {
 544     return pf_printf_w(puts_clbk_console_w, NULL, format, NULL, 0, arg_clbk_valist, NULL, &valist);
 545 }
 546
 547 /*********************************************************************
 548  *              _cwprintf (MSVCRT.@)
 549  */
 550 int WINAPIV _cwprintf(const wchar_t* format, ...)
 551 {
 552   int retval;
 553   __ms_va_list valist;
 554
 555   __ms_va_start( valist, format );
 556   retval = _vcwprintf(format, valist);
 557   __ms_va_end(valist);
 558
 559   return retval;
 560 }
 561
 562 #if _MSVCR_VER>=140
 563
 564 /*********************************************************************
 565  *              __conio_common_vcprintf (UCRTBASE.@)
 566  */
 567 int CDECL __conio_common_vcprintf(unsigned __int64 options, const char* format,
 568                                         _locale_t locale, __ms_va_list valist)
 569 {
 570     if (options & ~UCRTBASE_PRINTF_MASK)
 571         FIXME("options %s not handled\n", wine_dbgstr_longlong(options));
 572     return pf_printf_a(puts_clbk_console_a, NULL, format, locale,
 573              options & UCRTBASE_PRINTF_MASK, arg_clbk_valist, NULL, &valist);
 574 }
 575
 576 /*********************************************************************
 577  *              __conio_common_vcwprintf (UCRTBASE.@)
 578  */
 579 int CDECL __conio_common_vcwprintf(unsigned __int64 options, const wchar_t* format,
 580                                          _locale_t locale, __ms_va_list valist)
 581 {
 582     if (options & ~UCRTBASE_PRINTF_MASK)
 583         FIXME("options %s not handled\n", wine_dbgstr_longlong(options));
 584     return pf_printf_w(puts_clbk_console_w, NULL, format, locale,
 585              options & UCRTBASE_PRINTF_MASK, arg_clbk_valist, NULL, &valist);
 586 }
 587
 588 #endif /* _MSVCR_VER>=140 */