programs/cmd/batch.c

   1 /*
   2  * CMD - Wine-compatible command line interface - batch interface.
   3  *
   4  * Copyright (C) 1999 D A Pickles
   5  * Copyright (C) 2007 J Edmeades
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "wcmd.h"
  23 #include "wine/debug.h"
  24
  25 extern struct env_stack *saved_environment;
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(cmd);
  28
  29 /****************************************************************************
  30  * WCMD_batch
  31  *
  32  * Open and execute a batch file.
  33  * On entry *command includes the complete command line beginning with the name
  34  * of the batch file (if a CALL command was entered the CALL has been removed).
  35  * *file is the name of the file, which might not exist and may not have the
  36  * .BAT suffix on. Called is 1 for a CALL, 0 otherwise.
  37  *
  38  * We need to handle recursion correctly, since one batch program might call another.
  39  * So parameters for this batch file are held in a BATCH_CONTEXT structure.
  40  *
  41  * To support call within the same batch program, another input parameter is
  42  * a label to goto once opened.
  43  */
  44
  45 void WCMD_batch (WCHAR *file, WCHAR *command, BOOL called, WCHAR *startLabel, HANDLE pgmHandle)
  46 {
  47   HANDLE h = INVALID_HANDLE_VALUE;
  48   BATCH_CONTEXT *prev_context;
  49
  50   if (startLabel == NULL) {
  51     h = CreateFileW (file, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  52                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
  53     if (h == INVALID_HANDLE_VALUE) {
  54       SetLastError (ERROR_FILE_NOT_FOUND);
  55       WCMD_print_error ();
  56       return;
  57     }
  58   } else {
  59     DuplicateHandle(GetCurrentProcess(), pgmHandle,
  60                     GetCurrentProcess(), &h,
  61                     0, FALSE, DUPLICATE_SAME_ACCESS);
  62   }
  63
  64 /*
  65  *      Create a context structure for this batch file.
  66  */
  67
  68   prev_context = context;
  69   context = LocalAlloc (LMEM_FIXED, sizeof (BATCH_CONTEXT));
  70   context -> h = h;
  71   context->batchfileW = heap_strdupW(file);
  72   context -> command = command;
  73   memset(context -> shift_count, 0x00, sizeof(context -> shift_count));
  74   context -> prev_context = prev_context;
  75   context -> skip_rest = FALSE;
  76
  77   /* If processing a call :label, 'goto' the label in question */
  78   if (startLabel) {
  79     strcpyW(param1, startLabel);
  80     WCMD_goto(NULL);
  81   }
  82
  83 /*
  84  *      Work through the file line by line. Specific batch commands are processed here,
  85  *      the rest are handled by the main command processor.
  86  */
  87
  88   while (context -> skip_rest == FALSE) {
  89       CMD_LIST *toExecute = NULL;         /* Commands left to be executed */
  90       if (!WCMD_ReadAndParseLine(NULL, &toExecute, h))
  91         break;
  92       /* Note: although this batch program itself may be called, we are not retrying
  93          the command as a result of a call failing to find a program, hence the
  94          retryCall parameter below is FALSE                                           */
  95       WCMD_process_commands(toExecute, FALSE, FALSE);
  96       WCMD_free_commands(toExecute);
  97       toExecute = NULL;
  98   }
  99   CloseHandle (h);
 100
 101 /*
 102  *  If there are outstanding setlocal's to the current context, unwind them.
 103  */
 104   while (saved_environment && saved_environment->batchhandle == context->h) {
 105       WCMD_endlocal();
 106   }
 107
 108 /*
 109  *      If invoked by a CALL, we return to the context of our caller. Otherwise return
 110  *      to the caller's caller.
 111  */
 112
 113   heap_free(context->batchfileW);
 114   LocalFree (context);
 115   if ((prev_context != NULL) && (!called)) {
 116     WINE_TRACE("Batch completed, but was not 'called' so skipping outer batch too\n");
 117     prev_context -> skip_rest = TRUE;
 118     context = prev_context;
 119   }
 120   context = prev_context;
 121 }
 122
 123 /*******************************************************************
 124  * WCMD_parameter_with_delims
 125  *
 126  * Extracts a delimited parameter from an input string, providing
 127  * the delimiters characters to use
 128  *
 129  * PARAMS
 130  *  s     [I] input string, non NULL
 131  *  n     [I] # of the parameter to return, counted from 0
 132  *  start [O] Optional. Pointer to the first char of param n in s
 133  *  raw   [I] TRUE to return the parameter in raw format (quotes maintained)
 134  *            FALSE to return the parameter with quotes stripped (including internal ones)
 135  *  wholecmdline [I] TRUE to indicate this routine is being used to parse the
 136  *                   command line, and special logic for arg0->1 transition
 137  *                   needs to be applied.
 138  *  delims[I] The delimiter characters to use
 139  *
 140  * RETURNS
 141  *  Success: The nth delimited parameter found in s
 142  *           if start != NULL, *start points to the start of the param (quotes maintained)
 143  *  Failure: An empty string if the param is not found.
 144  *           *start == NULL
 145  *
 146  * NOTES
 147  *  Return value is stored in static storage (i.e. overwritten after each call).
 148  *  By default, the parameter is returned with quotes removed, ready for use with
 149  *  other API calls, e.g. c:\"a b"\c is returned as c:\a b\c. However, some commands
 150  *  need to preserve the exact syntax (echo, for, etc) hence the raw option.
 151  */
 152 WCHAR *WCMD_parameter_with_delims (WCHAR *s, int n, WCHAR **start,
 153                                    BOOL raw, BOOL wholecmdline, const WCHAR *delims)
 154 {
 155     int curParamNb = 0;
 156     static WCHAR param[MAXSTRING];
 157     WCHAR *p = s, *begin;
 158
 159     if (start != NULL) *start = NULL;
 160     param[0] = '\0';
 161
 162     while (TRUE) {
 163
 164         /* Absorb repeated word delimiters until we get to the next token (or the end!) */
 165         while (*p && (strchrW(delims, *p) != NULL))
 166             p++;
 167         if (*p == '\0') return param;
 168
 169         /* If we have reached the token number we want, remember the beginning of it */
 170         if (start != NULL && curParamNb == n) *start = p;
 171
 172         /* Return the whole word up to the next delimiter, handling quotes in the middle
 173            of it, e.g. a"\b c\"d is a single parameter.                                  */
 174         begin = p;
 175
 176         /* Loop character by character, but just need to special case quotes */
 177         while (*p) {
 178             /* Once we have found a delimiter, break */
 179             if (strchrW(delims, *p) != NULL) break;
 180
 181             /* Very odd special case - Seems as if a ( acts as a delimiter which is
 182                not swallowed but is effective only when it comes between the program
 183                name and the parameters. Need to avoid this triggering when used
 184                to walk parameters generally.                                         */
 185             if (wholecmdline && curParamNb == 0 && *p=='(') break;
 186
 187             /* If we find a quote, copy until we get the end quote */
 188             if (*p == '"') {
 189                 p++;
 190                 while (*p && *p != '"') p++;
 191             }
 192
 193             /* Now skip the character / quote */
 194             if (*p) p++;
 195         }
 196
 197         if (curParamNb == n) {
 198             /* Return the parameter in static storage either as-is (raw) or
 199                suitable for use with other win32 api calls (quotes stripped) */
 200             if (raw) {
 201                 memcpy(param, begin, (p - begin) * sizeof(WCHAR));
 202                 param[p-begin] = '\0';
 203             } else {
 204                 int i=0;
 205                 while (begin < p) {
 206                   if (*begin != '"') param[i++] = *begin;
 207                   begin++;
 208                 }
 209                 param[i] = '\0';
 210             }
 211             return param;
 212         }
 213         curParamNb++;
 214     }
 215 }
 216
 217 /*******************************************************************
 218  * WCMD_parameter
 219  *
 220  * Extracts a delimited parameter from an input string, using a
 221  * default set of delimiter characters. For parameters, see the main
 222  * function above.
 223  */
 224 WCHAR *WCMD_parameter (WCHAR *s, int n, WCHAR **start, BOOL raw,
 225                        BOOL wholecmdline)
 226 {
 227   static const WCHAR defaultDelims[] = { ' ', '\t', ',', '=', ';', '\0' };
 228   return WCMD_parameter_with_delims (s, n, start, raw, wholecmdline, defaultDelims);
 229 }
 230
 231 /****************************************************************************
 232  * WCMD_fgets
 233  *
 234  * Gets one line from a file/console and puts it into buffer buf
 235  * Pre:  buf has size noChars
 236  *       1 <= noChars <= MAXSTRING
 237  * Post: buf is filled with at most noChars-1 characters, and gets nul-terminated
 238          buf does not include EOL terminator
 239  * Returns:
 240  *       buf on success
 241  *       NULL on error or EOF
 242  */
 243
 244 WCHAR *WCMD_fgets(WCHAR *buf, DWORD noChars, HANDLE h)
 245 {
 246   DWORD charsRead;
 247   BOOL status;
 248   DWORD i;
 249
 250   /* We can't use the native f* functions because of the filename syntax differences
 251      between DOS and Unix. Also need to lose the LF (or CRLF) from the line. */
 252
 253   if (!WCMD_is_console_handle(h)) {
 254       LARGE_INTEGER filepos;
 255       char *bufA;
 256       UINT cp;
 257       const char *p;
 258
 259       cp = GetConsoleCP();
 260       bufA = heap_alloc(noChars);
 261
 262       /* Save current file position */
 263       filepos.QuadPart = 0;
 264       SetFilePointerEx(h, filepos, &filepos, FILE_CURRENT);
 265
 266       status = ReadFile(h, bufA, noChars, &charsRead, NULL);
 267       if (!status || charsRead == 0) {
 268           heap_free(bufA);
 269           return NULL;
 270       }
 271
 272       /* Find first EOL */
 273       for (p = bufA; p < (bufA + charsRead); p = CharNextExA(cp, p, 0)) {
 274           if (*p == '\n' || *p == '\r')
 275               break;
 276       }
 277
 278       /* Sets file pointer to the start of the next line, if any */
 279       filepos.QuadPart += p - bufA + 1 + (*p == '\r' ? 1 : 0);
 280       SetFilePointerEx(h, filepos, NULL, FILE_BEGIN);
 281
 282       i = MultiByteToWideChar(cp, 0, bufA, p - bufA, buf, noChars);
 283       heap_free(bufA);
 284   }
 285   else {
 286       status = WCMD_ReadFile(h, buf, noChars, &charsRead);
 287       if (!status || charsRead == 0) return NULL;
 288
 289       /* Find first EOL */
 290       for (i = 0; i < charsRead; i++) {
 291           if (buf[i] == '\n' || buf[i] == '\r')
 292               break;
 293       }
 294   }
 295
 296   /* Truncate at EOL (or end of buffer) */
 297   if (i == noChars)
 298     i--;
 299
 300   buf[i] = '\0';
 301
 302   return buf;
 303 }
 304
 305 /* WCMD_splitpath - copied from winefile as no obvious way to use it otherwise */
 306 void WCMD_splitpath(const WCHAR* path, WCHAR* drv, WCHAR* dir, WCHAR* name, WCHAR* ext)
 307 {
 308         const WCHAR* end; /* end of processed string */
 309         const WCHAR* p;  /* search pointer */
 310         const WCHAR* s;  /* copy pointer */
 311
 312         /* extract drive name */
 313         if (path[0] && path[1]==':') {
 314                 if (drv) {
 315                         *drv++ = *path++;
 316                         *drv++ = *path++;
 317                         *drv = '\0';
 318                 }
 319         } else if (drv)
 320                 *drv = '\0';
 321
 322         end = path + strlenW(path);
 323
 324         /* search for begin of file extension */
 325         for(p=end; p>path && *--p!='\\' && *p!='/'; )
 326                 if (*p == '.') {
 327                         end = p;
 328                         break;
 329                 }
 330
 331         if (ext)
 332                 for(s=end; (*ext=*s++); )
 333                         ext++;
 334
 335         /* search for end of directory name */
 336         for(p=end; p>path; )
 337                 if (*--p=='\\' || *p=='/') {
 338                         p++;
 339                         break;
 340                 }
 341
 342         if (name) {
 343                 for(s=p; s<end; )
 344                         *name++ = *s++;
 345
 346                 *name = '\0';
 347         }
 348
 349         if (dir) {
 350                 for(s=path; s<p; )
 351                         *dir++ = *s++;
 352
 353                 *dir = '\0';
 354         }
 355 }
 356
 357 /****************************************************************************
 358  * WCMD_HandleTildaModifiers
 359  *
 360  * Handle the ~ modifiers when expanding %0-9 or (%a-z/A-Z in for command)
 361  *    %~xxxxxV  (V=0-9 or A-Z, a-z)
 362  * Where xxxx is any combination of:
 363  *    ~ - Removes quotes
 364  *    f - Fully qualified path (assumes current dir if not drive\dir)
 365  *    d - drive letter
 366  *    p - path
 367  *    n - filename
 368  *    x - file extension
 369  *    s - path with shortnames
 370  *    a - attributes
 371  *    t - date/time
 372  *    z - size
 373  *    $ENVVAR: - Searches ENVVAR for (contents of V) and expands to fully
 374  *                   qualified path
 375  *
 376  *  To work out the length of the modifier:
 377  *
 378  *  Note: In the case of %0-9 knowing the end of the modifier is easy,
 379  *    but in a for loop, the for end WCHARacter may also be a modifier
 380  *    eg. for %a in (c:\a.a) do echo XXX
 381  *             where XXX = %~a    (just ~)
 382  *                         %~aa   (~ and attributes)
 383  *                         %~aaxa (~, attributes and extension)
 384  *                   BUT   %~aax  (~ and attributes followed by 'x')
 385  *
 386  *  Hence search forwards until find an invalid modifier, and then
 387  *  backwards until find for variable or 0-9
 388  */
 389 void WCMD_HandleTildaModifiers(WCHAR **start, BOOL atExecute)
 390 {
 391
 392 #define NUMMODIFIERS 11
 393   static const WCHAR validmodifiers[NUMMODIFIERS] = {
 394         '~', 'f', 'd', 'p', 'n', 'x', 's', 'a', 't', 'z', '$'
 395   };
 396
 397   WIN32_FILE_ATTRIBUTE_DATA fileInfo;
 398   WCHAR  outputparam[MAX_PATH];
 399   WCHAR  finaloutput[MAX_PATH];
 400   WCHAR  fullfilename[MAX_PATH];
 401   WCHAR  thisoutput[MAX_PATH];
 402   WCHAR  *pos            = *start+1;
 403   WCHAR  *firstModifier  = pos;
 404   WCHAR  *lastModifier   = NULL;
 405   int   modifierLen     = 0;
 406   BOOL  finished        = FALSE;
 407   int   i               = 0;
 408   BOOL  exists          = TRUE;
 409   BOOL  skipFileParsing = FALSE;
 410   BOOL  doneModifier    = FALSE;
 411
 412   /* Search forwards until find invalid character modifier */
 413   while (!finished) {
 414
 415     /* Work on the previous character */
 416     if (lastModifier != NULL) {
 417
 418       for (i=0; i<NUMMODIFIERS; i++) {
 419         if (validmodifiers[i] == *lastModifier) {
 420
 421           /* Special case '$' to skip until : found */
 422           if (*lastModifier == '$') {
 423             while (*pos != ':' && *pos) pos++;
 424             if (*pos == 0x00) return; /* Invalid syntax */
 425             pos++;                    /* Skip ':'       */
 426           }
 427           break;
 428         }
 429       }
 430
 431       if (i==NUMMODIFIERS) {
 432         finished = TRUE;
 433       }
 434     }
 435
 436     /* Save this one away */
 437     if (!finished) {
 438       lastModifier = pos;
 439       pos++;
 440     }
 441   }
 442
 443   while (lastModifier > firstModifier) {
 444     WINE_TRACE("Looking backwards for parameter id: %s\n",
 445                wine_dbgstr_w(lastModifier));
 446
 447     if (!atExecute && context && (*lastModifier >= '0' && *lastModifier <= '9')) {
 448       /* Its a valid parameter identifier - OK */
 449       break;
 450
 451     } else {
 452       int foridx = FOR_VAR_IDX(*lastModifier);
 453       /* Its a valid parameter identifier - OK */
 454       if ((foridx >= 0) && (forloopcontext.variable[foridx] != NULL)) break;
 455
 456       /* Its not a valid parameter identifier - step backwards */
 457       lastModifier--;
 458     }
 459   }
 460   if (lastModifier == firstModifier) return; /* Invalid syntax */
 461
 462   /* Extract the parameter to play with */
 463   if (*lastModifier == '0') {
 464     strcpyW(outputparam, context->batchfileW);
 465   } else if ((*lastModifier >= '1' && *lastModifier <= '9')) {
 466     strcpyW(outputparam,
 467             WCMD_parameter (context -> command,
 468                             *lastModifier-'0' + context -> shift_count[*lastModifier-'0'],
 469                             NULL, FALSE, TRUE));
 470   } else {
 471     int foridx = FOR_VAR_IDX(*lastModifier);
 472     strcpyW(outputparam, forloopcontext.variable[foridx]);
 473   }
 474
 475   /* So now, firstModifier points to beginning of modifiers, lastModifier
 476      points to the variable just after the modifiers. Process modifiers
 477      in a specific order, remembering there could be duplicates           */
 478   modifierLen = lastModifier - firstModifier;
 479   finaloutput[0] = 0x00;
 480
 481   /* 1. Handle '~' : Strip surrounding quotes */
 482   if (outputparam[0]=='"' &&
 483       memchrW(firstModifier, '~', modifierLen) != NULL) {
 484     int len = strlenW(outputparam);
 485     if (outputparam[len-1] == '"') {
 486         outputparam[len-1]=0x00;
 487         len = len - 1;
 488     }
 489     memmove(outputparam, &outputparam[1], (len * sizeof(WCHAR))-1);
 490   }
 491
 492   /* 2. Handle the special case of a $ */
 493   if (memchrW(firstModifier, '$', modifierLen) != NULL) {
 494     /* Special Case: Search envar specified in $[envvar] for outputparam
 495        Note both $ and : are guaranteed otherwise check above would fail */
 496     WCHAR *begin = strchrW(firstModifier, '$') + 1;
 497     WCHAR *end   = strchrW(firstModifier, ':');
 498     WCHAR env[MAX_PATH];
 499     WCHAR fullpath[MAX_PATH];
 500
 501     /* Extract the env var */
 502     memcpy(env, begin, (end-begin) * sizeof(WCHAR));
 503     env[(end-begin)] = 0x00;
 504
 505     /* If env var not found, return empty string */
 506     if ((GetEnvironmentVariableW(env, fullpath, MAX_PATH) == 0) ||
 507         (SearchPathW(fullpath, outputparam, NULL, MAX_PATH, outputparam, NULL) == 0)) {
 508       finaloutput[0] = 0x00;
 509       outputparam[0] = 0x00;
 510       skipFileParsing = TRUE;
 511     }
 512   }
 513
 514   /* After this, we need full information on the file,
 515     which is valid not to exist.  */
 516   if (!skipFileParsing) {
 517     if (GetFullPathNameW(outputparam, MAX_PATH, fullfilename, NULL) == 0) {
 518       exists = FALSE;
 519       fullfilename[0] = 0x00;
 520     } else {
 521       exists = GetFileAttributesExW(fullfilename, GetFileExInfoStandard,
 522                                     &fileInfo);
 523     }
 524
 525     /* 2. Handle 'a' : Output attributes (File doesn't have to exist) */
 526     if (memchrW(firstModifier, 'a', modifierLen) != NULL) {
 527
 528       WCHAR defaults[] = {'-','-','-','-','-','-','-','-','-','\0'};
 529       doneModifier = TRUE;
 530
 531       if (exists) {
 532         strcpyW(thisoutput, defaults);
 533         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 534           thisoutput[0]='d';
 535         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
 536           thisoutput[1]='r';
 537         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE)
 538           thisoutput[2]='a';
 539         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
 540           thisoutput[3]='h';
 541         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM)
 542           thisoutput[4]='s';
 543         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)
 544           thisoutput[5]='c';
 545         /* FIXME: What are 6 and 7? */
 546         if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
 547           thisoutput[8]='l';
 548         strcatW(finaloutput, thisoutput);
 549       }
 550     }
 551
 552     /* 3. Handle 't' : Date+time (File doesn't have to exist) */
 553     if (memchrW(firstModifier, 't', modifierLen) != NULL) {
 554
 555       SYSTEMTIME systime;
 556       int datelen;
 557
 558       doneModifier = TRUE;
 559
 560       if (exists) {
 561         if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
 562
 563         /* Format the time */
 564         FileTimeToSystemTime(&fileInfo.ftLastWriteTime, &systime);
 565         GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &systime,
 566                           NULL, thisoutput, MAX_PATH);
 567         strcatW(thisoutput, spaceW);
 568         datelen = strlenW(thisoutput);
 569         GetTimeFormatW(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &systime,
 570                           NULL, (thisoutput+datelen), MAX_PATH-datelen);
 571         strcatW(finaloutput, thisoutput);
 572       }
 573     }
 574
 575     /* 4. Handle 'z' : File length (File doesn't have to exist) */
 576     if (memchrW(firstModifier, 'z', modifierLen) != NULL) {
 577       /* FIXME: Output full 64 bit size (sprintf does not support I64 here) */
 578       ULONG/*64*/ fullsize = /*(fileInfo.nFileSizeHigh << 32) +*/
 579                                   fileInfo.nFileSizeLow;
 580       static const WCHAR fmt[] = {'%','u','\0'};
 581
 582       doneModifier = TRUE;
 583       if (exists) {
 584         if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
 585         wsprintfW(thisoutput, fmt, fullsize);
 586         strcatW(finaloutput, thisoutput);
 587       }
 588     }
 589
 590     /* 4. Handle 's' : Use short paths (File doesn't have to exist) */
 591     if (memchrW(firstModifier, 's', modifierLen) != NULL) {
 592       if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
 593       /* Don't flag as doneModifier - %~s on its own is processed later */
 594       GetShortPathNameW(outputparam, outputparam, sizeof(outputparam)/sizeof(outputparam[0]));
 595     }
 596
 597     /* 5. Handle 'f' : Fully qualified path (File doesn't have to exist) */
 598     /*      Note this overrides d,p,n,x                                 */
 599     if (memchrW(firstModifier, 'f', modifierLen) != NULL) {
 600       doneModifier = TRUE;
 601       if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
 602       strcatW(finaloutput, fullfilename);
 603     } else {
 604
 605       WCHAR drive[10];
 606       WCHAR dir[MAX_PATH];
 607       WCHAR fname[MAX_PATH];
 608       WCHAR ext[MAX_PATH];
 609       BOOL doneFileModifier = FALSE;
 610       BOOL addSpace = (finaloutput[0] != 0x00);
 611
 612       /* Split into components */
 613       WCMD_splitpath(fullfilename, drive, dir, fname, ext);
 614
 615       /* 5. Handle 'd' : Drive Letter */
 616       if (memchrW(firstModifier, 'd', modifierLen) != NULL) {
 617         if (addSpace) {
 618           strcatW(finaloutput, spaceW);
 619           addSpace = FALSE;
 620         }
 621
 622         strcatW(finaloutput, drive);
 623         doneModifier = TRUE;
 624         doneFileModifier = TRUE;
 625       }
 626
 627       /* 6. Handle 'p' : Path */
 628       if (memchrW(firstModifier, 'p', modifierLen) != NULL) {
 629         if (addSpace) {
 630           strcatW(finaloutput, spaceW);
 631           addSpace = FALSE;
 632         }
 633
 634         strcatW(finaloutput, dir);
 635         doneModifier = TRUE;
 636         doneFileModifier = TRUE;
 637       }
 638
 639       /* 7. Handle 'n' : Name */
 640       if (memchrW(firstModifier, 'n', modifierLen) != NULL) {
 641         if (addSpace) {
 642           strcatW(finaloutput, spaceW);
 643           addSpace = FALSE;
 644         }
 645
 646         strcatW(finaloutput, fname);
 647         doneModifier = TRUE;
 648         doneFileModifier = TRUE;
 649       }
 650
 651       /* 8. Handle 'x' : Ext */
 652       if (memchrW(firstModifier, 'x', modifierLen) != NULL) {
 653         if (addSpace) {
 654           strcatW(finaloutput, spaceW);
 655           addSpace = FALSE;
 656         }
 657
 658         strcatW(finaloutput, ext);
 659         doneModifier = TRUE;
 660         doneFileModifier = TRUE;
 661       }
 662
 663       /* If 's' but no other parameter, dump the whole thing */
 664       if (!doneFileModifier &&
 665           memchrW(firstModifier, 's', modifierLen) != NULL) {
 666         doneModifier = TRUE;
 667         if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
 668         strcatW(finaloutput, outputparam);
 669       }
 670     }
 671   }
 672
 673   /* If No other modifier processed,  just add in parameter */
 674   if (!doneModifier) strcpyW(finaloutput, outputparam);
 675
 676   /* Finish by inserting the replacement into the string */
 677   WCMD_strsubstW(*start, lastModifier+1, finaloutput, -1);
 678 }
 679
 680 /*******************************************************************
 681  * WCMD_call - processes a batch call statement
 682  *
 683  *      If there is a leading ':', calls within this batch program
 684  *      otherwise launches another program.
 685  */
 686 void WCMD_call (WCHAR *command) {
 687
 688   /* Run other program if no leading ':' */
 689   if (*command != ':') {
 690     WCMD_run_program(command, TRUE);
 691     /* If the thing we try to run does not exist, call returns 1 */
 692     if (errorlevel) errorlevel=1;
 693   } else {
 694
 695     WCHAR gotoLabel[MAX_PATH];
 696
 697     strcpyW(gotoLabel, param1);
 698
 699     if (context) {
 700
 701       LARGE_INTEGER li;
 702       FOR_CONTEXT oldcontext;
 703
 704       /* Save the for variable context, then start with an empty context
 705          as for loop variables do not survive a call                    */
 706       oldcontext = forloopcontext;
 707       memset(&forloopcontext, 0, sizeof(forloopcontext));
 708
 709       /* Save the current file position, call the same file,
 710          restore position                                    */
 711       li.QuadPart = 0;
 712       li.u.LowPart = SetFilePointer(context -> h, li.u.LowPart,
 713                      &li.u.HighPart, FILE_CURRENT);
 714       WCMD_batch (param1, command, TRUE, gotoLabel, context->h);
 715       SetFilePointer(context -> h, li.u.LowPart,
 716                      &li.u.HighPart, FILE_BEGIN);
 717
 718       /* Restore the for loop context */
 719       forloopcontext = oldcontext;
 720     } else {
 721       WCMD_output_asis_stderr(WCMD_LoadMessage(WCMD_CALLINSCRIPT));
 722     }
 723   }
 724 }