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