programs/wcmd/wcmdmain.c

   1 /*
   2  * WCMD - Wine-compatible command line interface.
   3  *
   4  * Copyright (C) 1999 - 2001 D A Pickles
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /*
  22  * FIXME:
  23  * - Cannot handle parameters in quotes
  24  * - Lots of functionality missing from builtins
  25  */
  26
  27 #include "ntstatus.h"
  28 #include "wcmd.h"
  29
  30 const char * const inbuilt[] = {"ATTRIB", "CALL", "CD", "CHDIR", "CLS", "COPY", "CTTY",
  31                 "DATE", "DEL", "DIR", "ECHO", "ERASE", "FOR", "GOTO",
  32                 "HELP", "IF", "LABEL", "MD", "MKDIR", "MOVE", "PATH", "PAUSE",
  33                 "PROMPT", "REM", "REN", "RENAME", "RD", "RMDIR", "SET", "SHIFT",
  34                 "TIME", "TITLE", "TYPE", "VERIFY", "VER", "VOL",
  35                 "ENDLOCAL", "SETLOCAL", "EXIT" };
  36
  37 HINSTANCE hinst;
  38 DWORD errorlevel;
  39 int echo_mode = 1, verify_mode = 0;
  40 const char nyi[] = "Not Yet Implemented\n\n";
  41 const char newline[] = "\n";
  42 const char version_string[] = "WCMD Version 0.17\n\n";
  43 const char anykey[] = "Press Return key to continue: ";
  44 char quals[MAX_PATH], param1[MAX_PATH], param2[MAX_PATH];
  45 BATCH_CONTEXT *context = NULL;
  46 static HANDLE old_stdin = INVALID_HANDLE_VALUE, old_stdout = INVALID_HANDLE_VALUE;
  47
  48 /*****************************************************************************
  49  * Main entry point. This is a console application so we have a main() not a
  50  * winmain().
  51  */
  52
  53 int main (int argc, char *argv[])
  54 {
  55   char string[1024];
  56   char* cmd=NULL;
  57   DWORD count;
  58   HANDLE h;
  59   int opt_c, opt_k, opt_q;
  60
  61   argv++;
  62   opt_c=opt_k=opt_q=0;
  63   while (*argv!=NULL)
  64   {
  65       if (lstrcmpi(*argv,"/c")==0) {
  66           opt_c=1;
  67           argv++;
  68           break;
  69       } else if (lstrcmpi(*argv,"/q")==0) {
  70           opt_q=1;
  71       } else if (lstrcmpi(*argv,"/k")==0) {
  72           opt_k=1;
  73           argv++;
  74           break;
  75       } else if (lstrcmpi(*argv,"/t")==0 || lstrcmpi(*argv,"/x")==0 ||
  76                  lstrcmpi(*argv,"/y")==0) {
  77           /* Ignored for compatibility with Windows */
  78       } else {
  79           break;
  80       }
  81       argv++;
  82   }
  83
  84   if (opt_q) {
  85     WCMD_echo("OFF");
  86   }
  87
  88   if (opt_c || opt_k) {
  89       int len;
  90       char** arg;
  91       char* p;
  92
  93       /* Build the command to execute */
  94       len = 0;
  95       for (arg = argv; *arg; arg++)
  96       {
  97           int has_space,bcount;
  98           char* a;
  99
 100           has_space=0;
 101           bcount=0;
 102           a=*arg;
 103           if( !*a ) has_space=1;
 104           while (*a!='\0') {
 105               if (*a=='\\') {
 106                   bcount++;
 107               } else {
 108                   if (*a==' ' || *a=='\t') {
 109                       has_space=1;
 110                   } else if (*a=='"') {
 111                       /* doubling of '\' preceding a '"',
 112                        * plus escaping of said '"'
 113                        */
 114                       len+=2*bcount+1;
 115                   }
 116                   bcount=0;
 117               }
 118               a++;
 119           }
 120           len+=(a-*arg)+1 /* for the separating space */;
 121           if (has_space)
 122               len+=2; /* for the quotes */
 123       }
 124
 125       cmd = HeapAlloc(GetProcessHeap(), 0, len);
 126       if (!cmd)
 127           exit(1);
 128
 129       p = cmd;
 130       for (arg = argv; *arg; arg++)
 131       {
 132           int has_space,has_quote;
 133           char* a;
 134
 135           /* Check for quotes and spaces in this argument */
 136           has_space=has_quote=0;
 137           a=*arg;
 138           if( !*a ) has_space=1;
 139           while (*a!='\0') {
 140               if (*a==' ' || *a=='\t') {
 141                   has_space=1;
 142                   if (has_quote)
 143                       break;
 144               } else if (*a=='"') {
 145                   has_quote=1;
 146                   if (has_space)
 147                       break;
 148               }
 149               a++;
 150           }
 151
 152           /* Now transfer it to the command line */
 153           if (has_space)
 154               *p++='"';
 155           if (has_quote) {
 156               int bcount;
 157               char* a;
 158
 159               bcount=0;
 160               a=*arg;
 161               while (*a!='\0') {
 162                   if (*a=='\\') {
 163                       *p++=*a;
 164                       bcount++;
 165                   } else {
 166                       if (*a=='"') {
 167                           int i;
 168
 169                           /* Double all the '\\' preceding this '"', plus one */
 170                           for (i=0;i<=bcount;i++)
 171                               *p++='\\';
 172                           *p++='"';
 173                       } else {
 174                           *p++=*a;
 175                       }
 176                       bcount=0;
 177                   }
 178                   a++;
 179               }
 180           } else {
 181               strcpy(p,*arg);
 182               p+=strlen(*arg);
 183           }
 184           if (has_space)
 185               *p++='"';
 186           *p++=' ';
 187       }
 188       if (p > cmd)
 189           p--;  /* remove last space */
 190       *p = '\0';
 191   }
 192
 193   if (opt_c) {
 194       /* If we do a "wcmd /c command", we don't want to allocate a new
 195        * console since the command returns immediately. Rather, we use
 196        * the currently allocated input and output handles. This allows
 197        * us to pipe to and read from the command interpreter.
 198        */
 199       if (strchr(cmd,'|') != NULL)
 200           WCMD_pipe(cmd);
 201       else
 202           WCMD_process_command(cmd);
 203       HeapFree(GetProcessHeap(), 0, cmd);
 204       return 0;
 205   }
 206
 207   SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_LINE_INPUT |
 208                  ENABLE_ECHO_INPUT | ENABLE_PROCESSED_INPUT);
 209   SetConsoleTitle("Wine Command Prompt");
 210
 211   if (opt_k) {
 212       WCMD_process_command(cmd);
 213       HeapFree(GetProcessHeap(), 0, cmd);
 214   }
 215
 216 /*
 217  *      If there is an AUTOEXEC.BAT file, try to execute it.
 218  */
 219
 220   GetFullPathName ("\\autoexec.bat", sizeof(string), string, NULL);
 221   h = CreateFile (string, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 222   if (h != INVALID_HANDLE_VALUE) {
 223     CloseHandle (h);
 224 #if 0
 225     WCMD_batch_command (string);
 226 #endif
 227   }
 228
 229 /*
 230  *      Loop forever getting commands and executing them.
 231  */
 232
 233   WCMD_version ();
 234   while (TRUE) {
 235     WCMD_show_prompt ();
 236     ReadFile (GetStdHandle(STD_INPUT_HANDLE), string, sizeof(string), &count, NULL);
 237     if (count > 1) {
 238       string[count-1] = '\0'; /* ReadFile output is not null-terminated! */
 239       if (string[count-2] == '\r') string[count-2] = '\0'; /* Under Windoze we get CRLF! */
 240       if (lstrlen (string) != 0) {
 241         if (strchr(string,'|') != NULL) {
 242           WCMD_pipe (string);
 243         }
 244         else {
 245           WCMD_process_command (string);
 246         }
 247       }
 248     }
 249   }
 250 }
 251
 252
 253 /*****************************************************************************
 254  * Process one command. If the command is EXIT this routine does not return.
 255  * We will recurse through here executing batch files.
 256  */
 257
 258
 259 void WCMD_process_command (char *command)
 260 {
 261     char *cmd, *p;
 262     int status, i, len;
 263     DWORD count, creationDisposition;
 264     HANDLE h;
 265     char *whichcmd;
 266     SECURITY_ATTRIBUTES sa;
 267
 268 /*
 269  *      Expand up environment variables.
 270  */
 271     len = ExpandEnvironmentStrings (command, NULL, 0);
 272     cmd = HeapAlloc( GetProcessHeap(), 0, len );
 273     status = ExpandEnvironmentStrings (command, cmd, len);
 274     if (!status) {
 275       WCMD_print_error ();
 276       HeapFree( GetProcessHeap(), 0, cmd );
 277       return;
 278     }
 279
 280 /*
 281  *      Changing default drive has to be handled as a special case.
 282  */
 283
 284     if ((cmd[1] == ':') && IsCharAlpha (cmd[0]) && (strlen(cmd) == 2)) {
 285       status = SetCurrentDirectory (cmd);
 286       if (!status) WCMD_print_error ();
 287       HeapFree( GetProcessHeap(), 0, cmd );
 288       return;
 289     }
 290
 291     /* Don't issue newline WCMD_output (newline);           @JED*/
 292
 293     sa.nLength = sizeof(sa);
 294     sa.lpSecurityDescriptor = NULL;
 295     sa.bInheritHandle = TRUE;
 296 /*
 297  *      Redirect stdin and/or stdout if required.
 298  */
 299
 300     if ((p = strchr(cmd,'<')) != NULL) {
 301       h = CreateFile (WCMD_parameter (++p, 0, NULL), GENERIC_READ, FILE_SHARE_READ, &sa, OPEN_EXISTING,
 302                 FILE_ATTRIBUTE_NORMAL, NULL);
 303       if (h == INVALID_HANDLE_VALUE) {
 304         WCMD_print_error ();
 305         HeapFree( GetProcessHeap(), 0, cmd );
 306         return;
 307       }
 308       old_stdin = GetStdHandle (STD_INPUT_HANDLE);
 309       SetStdHandle (STD_INPUT_HANDLE, h);
 310     }
 311     if ((p = strchr(cmd,'>')) != NULL) {
 312       *p++ = '\0';
 313       if ('>' == *p) {
 314         creationDisposition = OPEN_ALWAYS;
 315         p++;
 316       }
 317       else {
 318         creationDisposition = CREATE_ALWAYS;
 319       }
 320       h = CreateFile (WCMD_parameter (p, 0, NULL), GENERIC_WRITE, 0, &sa, creationDisposition,
 321                 FILE_ATTRIBUTE_NORMAL, NULL);
 322       if (h == INVALID_HANDLE_VALUE) {
 323         WCMD_print_error ();
 324         HeapFree( GetProcessHeap(), 0, cmd );
 325         return;
 326       }
 327       if (SetFilePointer (h, 0, NULL, FILE_END) ==
 328           INVALID_SET_FILE_POINTER) {
 329         WCMD_print_error ();
 330       }
 331       old_stdout = GetStdHandle (STD_OUTPUT_HANDLE);
 332       SetStdHandle (STD_OUTPUT_HANDLE, h);
 333     }
 334     if ((p = strchr(cmd,'<')) != NULL) *p = '\0';
 335
 336 /*
 337  * Strip leading whitespaces, and a '@' if supplied
 338  */
 339     whichcmd = WCMD_strtrim_leading_spaces(cmd);
 340     if (whichcmd[0] == '@') whichcmd++;
 341
 342 /*
 343  *      Check if the command entered is internal. If it is, pass the rest of the
 344  *      line down to the command. If not try to run a program.
 345  */
 346
 347     count = 0;
 348     while (IsCharAlphaNumeric(whichcmd[count])) {
 349       count++;
 350     }
 351     for (i=0; i<=WCMD_EXIT; i++) {
 352       if (CompareString (LOCALE_USER_DEFAULT, NORM_IGNORECASE | SORT_STRINGSORT,
 353           whichcmd, count, inbuilt[i], -1) == 2) break;
 354     }
 355     p = WCMD_strtrim_leading_spaces (&whichcmd[count]);
 356     WCMD_parse (p, quals, param1, param2);
 357     switch (i) {
 358
 359       case WCMD_ATTRIB:
 360         WCMD_setshow_attrib ();
 361         break;
 362       case WCMD_CALL:
 363         WCMD_batch (param1, p, 1);
 364         break;
 365       case WCMD_CD:
 366       case WCMD_CHDIR:
 367         WCMD_setshow_default ();
 368         break;
 369       case WCMD_CLS:
 370         WCMD_clear_screen ();
 371         break;
 372       case WCMD_COPY:
 373         WCMD_copy ();
 374         break;
 375       case WCMD_CTTY:
 376         WCMD_change_tty ();
 377         break;
 378       case WCMD_DATE:
 379         WCMD_setshow_date ();
 380         break;
 381       case WCMD_DEL:
 382       case WCMD_ERASE:
 383         WCMD_delete (0);
 384         break;
 385       case WCMD_DIR:
 386         WCMD_directory ();
 387         break;
 388       case WCMD_ECHO:
 389         WCMD_echo(&whichcmd[count]);
 390         break;
 391       case WCMD_FOR:
 392         WCMD_for (p);
 393         break;
 394       case WCMD_GOTO:
 395         WCMD_goto ();
 396         break;
 397       case WCMD_HELP:
 398         WCMD_give_help (p);
 399         break;
 400       case WCMD_IF:
 401         WCMD_if (p);
 402         break;
 403       case WCMD_LABEL:
 404         WCMD_volume (1, p);
 405         break;
 406       case WCMD_MD:
 407       case WCMD_MKDIR:
 408         WCMD_create_dir ();
 409         break;
 410       case WCMD_MOVE:
 411         WCMD_move ();
 412         break;
 413       case WCMD_PATH:
 414         WCMD_setshow_path (p);
 415         break;
 416       case WCMD_PAUSE:
 417         WCMD_pause ();
 418         break;
 419       case WCMD_PROMPT:
 420         WCMD_setshow_prompt ();
 421         break;
 422       case WCMD_REM:
 423         break;
 424       case WCMD_REN:
 425       case WCMD_RENAME:
 426         WCMD_rename ();
 427         break;
 428       case WCMD_RD:
 429       case WCMD_RMDIR:
 430         WCMD_remove_dir ();
 431         break;
 432       case WCMD_SETLOCAL:
 433         WCMD_setlocal(p);
 434         break;
 435       case WCMD_ENDLOCAL:
 436         WCMD_endlocal();
 437         break;
 438       case WCMD_SET:
 439         WCMD_setshow_env (p);
 440         break;
 441       case WCMD_SHIFT:
 442         WCMD_shift ();
 443         break;
 444       case WCMD_TIME:
 445         WCMD_setshow_time ();
 446         break;
 447       case WCMD_TITLE:
 448         if (strlen(&whichcmd[count]) > 0)
 449           WCMD_title(&whichcmd[count+1]);
 450         break;
 451       case WCMD_TYPE:
 452         WCMD_type ();
 453         break;
 454       case WCMD_VER:
 455         WCMD_version ();
 456         break;
 457       case WCMD_VERIFY:
 458         WCMD_verify (p);
 459         break;
 460       case WCMD_VOL:
 461         WCMD_volume (0, p);
 462         break;
 463       case WCMD_EXIT:
 464         ExitProcess (0);
 465       default:
 466         WCMD_run_program (whichcmd);
 467     }
 468     HeapFree( GetProcessHeap(), 0, cmd );
 469     if (old_stdin != INVALID_HANDLE_VALUE) {
 470       CloseHandle (GetStdHandle (STD_INPUT_HANDLE));
 471       SetStdHandle (STD_INPUT_HANDLE, old_stdin);
 472       old_stdin = INVALID_HANDLE_VALUE;
 473     }
 474     if (old_stdout != INVALID_HANDLE_VALUE) {
 475       CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE));
 476       SetStdHandle (STD_OUTPUT_HANDLE, old_stdout);
 477       old_stdout = INVALID_HANDLE_VALUE;
 478     }
 479 }
 480
 481 static void init_msvcrt_io_block(STARTUPINFO* st)
 482 {
 483     STARTUPINFO st_p;
 484     /* fetch the parent MSVCRT info block if any, so that the child can use the
 485      * same handles as its grand-father
 486      */
 487     st_p.cb = sizeof(STARTUPINFO);
 488     GetStartupInfo(&st_p);
 489     st->cbReserved2 = st_p.cbReserved2;
 490     st->lpReserved2 = st_p.lpReserved2;
 491     if (st_p.cbReserved2 && st_p.lpReserved2 &&
 492         (old_stdin != INVALID_HANDLE_VALUE || old_stdout != INVALID_HANDLE_VALUE))
 493     {
 494         /* Override the entries for fd 0,1,2 if we happened
 495          * to change those std handles (this depends on the way wcmd sets
 496          * it's new input & output handles)
 497          */
 498         size_t sz = max(sizeof(unsigned) + (sizeof(char) + sizeof(HANDLE)) * 3, st_p.cbReserved2);
 499         BYTE* ptr = HeapAlloc(GetProcessHeap(), 0, sz);
 500         if (ptr)
 501         {
 502             unsigned num = *(unsigned*)st_p.lpReserved2;
 503             char* flags = (char*)(ptr + sizeof(unsigned));
 504             HANDLE* handles = (HANDLE*)(flags + num * sizeof(char));
 505
 506             memcpy(ptr, st_p.lpReserved2, st_p.cbReserved2);
 507             st->cbReserved2 = sz;
 508             st->lpReserved2 = ptr;
 509
 510 #define WX_OPEN 0x01    /* see dlls/msvcrt/file.c */
 511             if (num <= 0 || (flags[0] & WX_OPEN))
 512             {
 513                 handles[0] = GetStdHandle(STD_INPUT_HANDLE);
 514                 flags[0] |= WX_OPEN;
 515             }
 516             if (num <= 1 || (flags[1] & WX_OPEN))
 517             {
 518                 handles[1] = GetStdHandle(STD_OUTPUT_HANDLE);
 519                 flags[1] |= WX_OPEN;
 520             }
 521             if (num <= 2 || (flags[2] & WX_OPEN))
 522             {
 523                 handles[2] = GetStdHandle(STD_ERROR_HANDLE);
 524                 flags[2] |= WX_OPEN;
 525             }
 526 #undef WX_OPEN
 527         }
 528     }
 529 }
 530
 531 /******************************************************************************
 532  * WCMD_run_program
 533  *
 534  *      Execute a command line as an external program. If no extension given then
 535  *      precedence is given to .BAT files. Must allow recursion.
 536  *
 537  *      FIXME: Case sensitivity in suffixes!
 538  */
 539
 540 void WCMD_run_program (char *command) {
 541
 542 STARTUPINFO st;
 543 PROCESS_INFORMATION pe;
 544 SHFILEINFO psfi;
 545 DWORD console;
 546 BOOL status;
 547 HANDLE h;
 548 HINSTANCE hinst;
 549 char filetorun[MAX_PATH];
 550
 551   WCMD_parse (command, quals, param1, param2);  /* Quick way to get the filename */
 552   if (!(*param1) && !(*param2))
 553     return;
 554   if (strpbrk (param1, "/\\:") == NULL) {  /* No explicit path given */
 555     char *ext = strrchr( param1, '.' );
 556     if (!ext || !strcasecmp( ext, ".bat"))
 557     {
 558       if (SearchPath (NULL, param1, ".bat", sizeof(filetorun), filetorun, NULL)) {
 559         WCMD_batch (filetorun, command, 0);
 560         return;
 561       }
 562     }
 563     if (!ext || !strcasecmp( ext, ".cmd"))
 564     {
 565       if (SearchPath (NULL, param1, ".cmd", sizeof(filetorun), filetorun, NULL)) {
 566         WCMD_batch (filetorun, command, 0);
 567         return;
 568       }
 569     }
 570   }
 571   else {                                        /* Explicit path given */
 572     char *ext = strrchr( param1, '.' );
 573     if (ext && (!strcasecmp( ext, ".bat" ) || !strcasecmp( ext, ".cmd" )))
 574     {
 575       WCMD_batch (param1, command, 0);
 576       return;
 577     }
 578
 579     if (ext && strpbrk( ext, "/\\:" )) ext = NULL;
 580     if (!ext)
 581     {
 582       strcpy (filetorun, param1);
 583       strcat (filetorun, ".bat");
 584       h = CreateFile (filetorun, GENERIC_READ, FILE_SHARE_READ,
 585                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 586       if (h != INVALID_HANDLE_VALUE) {
 587         CloseHandle (h);
 588         WCMD_batch (param1, command, 0);
 589         return;
 590       }
 591     }
 592   }
 593
 594         /* No batch file found, assume executable */
 595
 596   hinst = FindExecutable (param1, NULL, filetorun);
 597   if ((int)hinst < 32) {
 598     WCMD_print_error ();
 599     return;
 600   }
 601   console = SHGetFileInfo (filetorun, 0, &psfi, sizeof(psfi), SHGFI_EXETYPE);
 602   ZeroMemory (&st, sizeof(STARTUPINFO));
 603   st.cb = sizeof(STARTUPINFO);
 604   init_msvcrt_io_block(&st);
 605
 606   status = CreateProcess (NULL, command, NULL, NULL, TRUE,
 607                           0, NULL, NULL, &st, &pe);
 608   if (!status) {
 609     WCMD_print_error ();
 610     return;
 611   }
 612   if (!console) errorlevel = 0;
 613   else
 614   {
 615       if (!HIWORD(console)) WaitForSingleObject (pe.hProcess, INFINITE);
 616       GetExitCodeProcess (pe.hProcess, &errorlevel);
 617       if (errorlevel == STILL_ACTIVE) errorlevel = 0;
 618   }
 619   CloseHandle(pe.hProcess);
 620   CloseHandle(pe.hThread);
 621 }
 622
 623 /******************************************************************************
 624  * WCMD_show_prompt
 625  *
 626  *      Display the prompt on STDout
 627  *
 628  */
 629
 630 void WCMD_show_prompt (void) {
 631
 632 int status;
 633 char out_string[MAX_PATH], curdir[MAX_PATH], prompt_string[MAX_PATH];
 634 char *p, *q;
 635
 636   status = GetEnvironmentVariable ("PROMPT", prompt_string, sizeof(prompt_string));
 637   if ((status == 0) || (status > sizeof(prompt_string))) {
 638     lstrcpy (prompt_string, "$P$G");
 639   }
 640   p = prompt_string;
 641   q = out_string;
 642   *q = '\0';
 643   while (*p != '\0') {
 644     if (*p != '$') {
 645       *q++ = *p++;
 646       *q = '\0';
 647     }
 648     else {
 649       p++;
 650       switch (toupper(*p)) {
 651         case '$':
 652           *q++ = '$';
 653           break;
 654         case 'B':
 655           *q++ = '|';
 656           break;
 657         case 'D':
 658           GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, NULL, NULL, q, MAX_PATH);
 659           while (*q) q++;
 660           break;
 661         case 'E':
 662           *q++ = '\E';
 663           break;
 664         case 'G':
 665           *q++ = '>';
 666           break;
 667         case 'L':
 668           *q++ = '<';
 669           break;
 670         case 'N':
 671           status = GetCurrentDirectory (sizeof(curdir), curdir);
 672           if (status) {
 673             *q++ = curdir[0];
 674           }
 675           break;
 676         case 'P':
 677           status = GetCurrentDirectory (sizeof(curdir), curdir);
 678           if (status) {
 679             lstrcat (q, curdir);
 680             while (*q) q++;
 681           }
 682           break;
 683         case 'Q':
 684           *q++ = '=';
 685           break;
 686         case 'T':
 687           GetTimeFormat (LOCALE_USER_DEFAULT, 0, NULL, NULL, q, MAX_PATH);
 688           while (*q) q++;
 689           break;
 690        case 'V':
 691            lstrcat (q, version_string);
 692            while (*q) q++;
 693          break;
 694         case '_':
 695           *q++ = '\n';
 696           break;
 697       }
 698       p++;
 699       *q = '\0';
 700     }
 701   }
 702   WCMD_output (out_string);
 703 }
 704
 705 /****************************************************************************
 706  * WCMD_print_error
 707  *
 708  * Print the message for GetLastError
 709  */
 710
 711 void WCMD_print_error (void) {
 712 LPVOID lpMsgBuf;
 713 DWORD error_code;
 714 int status;
 715
 716   error_code = GetLastError ();
 717   status = FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
 718                         NULL, error_code, 0, (LPTSTR) &lpMsgBuf, 0, NULL);
 719   if (!status) {
 720     WCMD_output ("FIXME: Cannot display message for error %d, status %d\n",
 721                         error_code, GetLastError());
 722     return;
 723   }
 724   WCMD_output (lpMsgBuf);
 725   LocalFree ((HLOCAL)lpMsgBuf);
 726   WCMD_output (newline);
 727   return;
 728 }
 729
 730 /*******************************************************************
 731  * WCMD_parse - parse a command into parameters and qualifiers.
 732  *
 733  *      On exit, all qualifiers are concatenated into q, the first string
 734  *      not beginning with "/" is in p1 and the
 735  *      second in p2. Any subsequent non-qualifier strings are lost.
 736  *      Parameters in quotes are handled.
 737  */
 738
 739 void WCMD_parse (char *s, char *q, char *p1, char *p2) {
 740
 741 int p = 0;
 742
 743   *q = *p1 = *p2 = '\0';
 744   while (TRUE) {
 745     switch (*s) {
 746       case '/':
 747         *q++ = *s++;
 748         while ((*s != '\0') && (*s != ' ') && *s != '/') {
 749           *q++ = toupper (*s++);
 750         }
 751         *q = '\0';
 752         break;
 753       case ' ':
 754       case '\t':
 755         s++;
 756         break;
 757       case '"':
 758         s++;
 759         while ((*s != '\0') && (*s != '"')) {
 760           if (p == 0) *p1++ = *s++;
 761           else if (p == 1) *p2++ = *s++;
 762           else s++;
 763         }
 764         if (p == 0) *p1 = '\0';
 765         if (p == 1) *p2 = '\0';
 766         p++;
 767         if (*s == '"') s++;
 768         break;
 769       case '\0':
 770         return;
 771       default:
 772         while ((*s != '\0') && (*s != ' ') && (*s != '\t')) {
 773           if (p == 0) *p1++ = *s++;
 774           else if (p == 1) *p2++ = *s++;
 775           else s++;
 776         }
 777         if (p == 0) *p1 = '\0';
 778         if (p == 1) *p2 = '\0';
 779         p++;
 780     }
 781   }
 782 }
 783
 784 /*******************************************************************
 785  * WCMD_output - send output to current standard output device.
 786  *
 787  */
 788
 789 void WCMD_output (const char *format, ...) {
 790
 791 va_list ap;
 792 char string[1024];
 793
 794   va_start(ap,format);
 795   vsprintf (string, format, ap);
 796   va_end(ap);
 797   WCMD_output_asis(string);
 798 }
 799
 800
 801 static int line_count;
 802 static int max_height;
 803 static BOOL paged_mode;
 804
 805 void WCMD_enter_paged_mode(void)
 806 {
 807 CONSOLE_SCREEN_BUFFER_INFO consoleInfo;
 808
 809   if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &consoleInfo))
 810     max_height = consoleInfo.dwSize.Y;
 811   else
 812     max_height = 25;
 813   paged_mode = TRUE;
 814   line_count = 5; /* keep 5 lines from previous output */
 815 }
 816
 817 void WCMD_leave_paged_mode(void)
 818 {
 819   paged_mode = FALSE;
 820 }
 821
 822 /*******************************************************************
 823  * WCMD_output_asis - send output to current standard output device.
 824  *        without formatting eg. when message contains '%'
 825  */
 826
 827 void WCMD_output_asis (const char *message) {
 828   DWORD count;
 829   char* ptr;
 830   char string[1024];
 831
 832   if (paged_mode) {
 833     do {
 834       if ((ptr = strchr(message, '\n')) != NULL) ptr++;
 835       WriteFile (GetStdHandle(STD_OUTPUT_HANDLE), message,
 836                  (ptr) ? ptr - message : lstrlen(message), &count, NULL);
 837       if (ptr) {
 838         if (++line_count >= max_height - 1) {
 839           line_count = 0;
 840           WCMD_output_asis (anykey);
 841           ReadFile (GetStdHandle(STD_INPUT_HANDLE), string, sizeof(string), &count, NULL);
 842         }
 843       }
 844     } while ((message = ptr) != NULL);
 845   } else {
 846       WriteFile (GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlen(message), &count, NULL);
 847   }
 848 }
 849
 850
 851 /***************************************************************************
 852  * WCMD_strtrim_leading_spaces
 853  *
 854  *      Remove leading spaces from a string. Return a pointer to the first
 855  *      non-space character. Does not modify the input string
 856  */
 857
 858 char *WCMD_strtrim_leading_spaces (char *string) {
 859
 860 char *ptr;
 861
 862   ptr = string;
 863   while (*ptr == ' ') ptr++;
 864   return ptr;
 865 }
 866
 867 /*************************************************************************
 868  * WCMD_strtrim_trailing_spaces
 869  *
 870  *      Remove trailing spaces from a string. This routine modifies the input
 871  *      string by placing a null after the last non-space character
 872  */
 873
 874 void WCMD_strtrim_trailing_spaces (char *string) {
 875
 876 char *ptr;
 877
 878   ptr = string + lstrlen (string) - 1;
 879   while ((*ptr == ' ') && (ptr >= string)) {
 880     *ptr = '\0';
 881     ptr--;
 882   }
 883 }
 884
 885 /*************************************************************************
 886  * WCMD_pipe
 887  *
 888  *      Handle pipes within a command - the DOS way using temporary files.
 889  */
 890
 891 void WCMD_pipe (char *command) {
 892
 893 char *p;
 894 char temp_path[MAX_PATH], temp_file[MAX_PATH], temp_file2[MAX_PATH], temp_cmd[1024];
 895
 896   GetTempPath (sizeof(temp_path), temp_path);
 897   GetTempFileName (temp_path, "WCMD", 0, temp_file);
 898   p = strchr(command, '|');
 899   *p++ = '\0';
 900   wsprintf (temp_cmd, "%s > %s", command, temp_file);
 901   WCMD_process_command (temp_cmd);
 902   command = p;
 903   while ((p = strchr(command, '|'))) {
 904     *p++ = '\0';
 905     GetTempFileName (temp_path, "WCMD", 0, temp_file2);
 906     wsprintf (temp_cmd, "%s < %s > %s", command, temp_file, temp_file2);
 907     WCMD_process_command (temp_cmd);
 908     DeleteFile (temp_file);
 909     lstrcpy (temp_file, temp_file2);
 910     command = p;
 911   }
 912   wsprintf (temp_cmd, "%s < %s", command, temp_file);
 913   WCMD_process_command (temp_cmd);
 914   DeleteFile (temp_file);
 915 }