source: trunk/dll/grep.c@ 1000

/***********************************************************************

  $Id: grep.c 985 2008-03-01 01:37:14Z gyoung $

  grep tools

  Copyright (c) 1993-98 M. Kimes
  Copyright (c) 2001, 2008 Steven H. Levine

  12 Feb 03 SHL InsertGrepFile: standardize EA math
  12 Feb 03 SHL doonefile: standardize EA math
  25 May 05 SHL Rework for ULONGLONG
  25 May 05 SHL Rework for FillInRecordFromFFB
  06 Jun 05 SHL Drop unused code
  24 Oct 05 SHL dononefile: do not free EA list twice
  22 Jul 06 SHL Use Runtime_Error
  26 Jul 06 SHL Check more run time errors
  19 Oct 06 SHL Correct . and .. detect
  03 Nov 06 SHL Count thread usage
  03 Aug 07 GKY Enlarged and made setable everywhere Findbuf (speed file loading)
  06 Aug 07 GKY Reduce DosSleep times (ticket 148)
  13 Aug 07 SHL Avoid pointer errors; sanitize code
  13 Aug 07 SHL Move #pragma alloc_text to end for OpenWatcom compat
  15 Aug 07 SHL Use FilesToGet directly
  26 Aug 07 GKY Improved performance of FillDups
  26 Aug 07 GKY DosSleep(1) in loops changed to (0)
  21 Sep 07 GKY Fix trap on search that includes filenames that exceed maxpath
  07 Feb 08 SHL Use ITIMER_DESC to control sleeps and reporting
  29 Feb 08 GKY Use xfree where appropriate

***********************************************************************/

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <share.h>

#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_WIN
#define INCL_LONGLONG

#include "fm3str.h"
#include "grep.h"
#include "pathutil.h"                   // BldFullPathName
#include "filldir.h"                    // FillInRecordFromFFB
#include "makelist.h"                   // AddToList
#include "errutil.h"                    // Dos_Error...
#include "strutil.h"                    // GetPString
#include "tmrsvcs.h"                    // ITIMER_DESC
#include "fm3dll.h"

#pragma data_seg(DATA2)

static PSZ pszSrcFile = __FILE__;

static VOID DoAllSubdirs(GREP *grep,
                         CHAR *searchPath,
                         BOOL recursing,
                         char **fle,
                         UINT numfls,
                         ITIMER_DESC *pitdSleep,
                         ITIMER_DESC *pitdReport);
static INT DoMatchingFiles(GREP *grep,
                           CHAR *path,
                           CHAR **fle,
                           UINT numfls,
                           ITIMER_DESC *pitdSleep,
                           ITIMER_DESC *pitdReport);
static BOOL DoOneFile(GREP *grep,
                      CHAR *fileName,
                      FILEFINDBUF4L *pffb,
                      ITIMER_DESC *pitdSleep,
                      ITIMER_DESC *pitdReport);
static BOOL DoInsertion(GREP *grep,
                        ITIMER_DESC *pitdSleep,
                        ITIMER_DESC *pitdReport);
static BOOL InsertDupe(GREP *grep, CHAR *dir, FILEFINDBUF4L *pffb);
static VOID FillDupes(GREP *grep,
                      ITIMER_DESC *pitdSleep,
                      ITIMER_DESC *pitdReport);

static VOID FreeDupes(GREP *grep);

#define GREPCHARS "*?[] \\"

#define isleap(year) ((((year%4)==0) && ((year%100)!=0)) || \
        ((year%400)==0))

static INT monthdays[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

ULONG SecsSince1980(FDATE *date, FTIME *time)
{
  ULONG total = 0;
  UINT x;

  for (x = 1980; x < date->year + 1980; x++) {
    if (isleap(x))
      total += (366 * (24 * 60 * 60));
    else
      total += (365 * (24 * 60 * 60));
  }
  for (x = 1; x < date->month; x++) {
    if (x == 2 && isleap(date->year + 1980))
      total += (29 * (24 * 60 * 60));
    else
      total += ((long)monthdays[x - 1] * (24 * 60 * 60));
  }
  total += (((long)date->day - 1) * (24 * 60 * 60));
  total += ((long)time->hours * (60 * 60));
  total += ((long)time->minutes * 60);
  total += ((long)time->twosecs * 2);
  return total;
}

/*
 * this function originally from C_ECHO's Snippets -- modified
 * brute force methodology
 */

static BOOL m_match(CHAR *string, CHAR *pattern, BOOL absolute, BOOL ignore,
                    LONG len)
{
  // return TRUE if pattern found in string
  register CHAR *tn = pattern;
  register LONG len2 = 0;
  LONG lastlen = 0;
  CHAR lo, hi;

  if (len && string && pattern) {
    if (absolute)                       // no pattern matching
      return (findstring(pattern, strlen(pattern), string, len,
                         (ignore == FALSE)) != NULL);

    while (*tn && len2 < len) {
      switch (*tn) {
      case ' ':
        while (*tn == ' ')
          tn++;
        while (len2 < len && isspace(string[len2]))
          len2++;
        break;

      case '*':
        while (*tn == '*' || *tn == '?')
          tn++;
        if (!*tn)
          return TRUE;
        if (ignore) {
          while (len2 < len && string[len2] != *tn)
            len2++;
        }
        else {
          while (len2 < len && toupper(string[len2] != *tn))
            len2++;
        }
        break;

      case '[':
        tn++;
        if (!*tn)
          return FALSE;
        lo = *tn;
        tn++;
        if (*tn != '-')
          return FALSE;
        tn++;
        if (!*tn)
          return FALSE;
        hi = *tn;
        tn++;
        if (*tn != ']')
          return FALSE;
        tn++;
        if (ignore) {
          if ((toupper(string[len2]) >= toupper(lo)) &&
              (toupper(string[len2]) <= toupper(hi)))
            len2++;
          else {
            tn = pattern;
            len2 = lastlen = lastlen + 1;
          }
        }
        else {
          if ((string[len2] >= lo) && (string[len2] <= hi))
            len2++;
          else {
            tn = pattern;
            len2 = lastlen = lastlen + 1;
          }
        }
        break;

      case '?':
        tn++;
        len2++;
        break;

      case '\\':
        tn++;
        if (!*tn)
          return FALSE;
        // else intentional fallthru
      default:
        if (ignore) {
          if (toupper(*tn) == toupper(string[len2])) {
            tn++;
            len2++;
          }
          else {
            tn = pattern;
            len2 = lastlen = lastlen + 1;
          }
        }
        else {
          if (*tn == string[len2]) {
            tn++;
            len2++;
          }
          else {
            tn = pattern;
            len2 = lastlen = lastlen + 1;
          }
        }
        break;
      }
    }
    while (*tn == '*')
      tn++;

    if (!*tn)
      return TRUE;
  }
  return FALSE;
}

static BOOL match(CHAR *string, CHAR *patterns, BOOL absolute, BOOL ignore,
                  LONG len, ULONG numlines, CHAR *matched, BOOL matchall)
{
  BOOL ret = FALSE;
  register CHAR *p;
  register ULONG x = 0;

  p = patterns;
  while (!ret && *p) {
    ret = m_match(string, p, absolute, ignore, len);
    if (matchall && ret)
      break;
    if (matched && ret && x < numlines)
      matched[x] = 1;
    p += strlen(p);                     // check each pattern in 0-terminated list
    p++;
    x++;
  }
  return ret;
}

VOID GrepThread(VOID *arg)
{
  HAB ghab;
  HMQ ghmq;
  GREP grep;
  UINT x;
  UINT numfls;
  static CHAR *fle[512];                // 06 Feb 08 SHL fixme to not be static
  CHAR *p, *pp, searchPath[CCHMAXPATH * 2];

  ITIMER_DESC itdSleep = { 0 };         // 06 Feb 08 SHL
  ITIMER_DESC itdReport = { 0 };

  if (!arg) {
    Runtime_Error(pszSrcFile, __LINE__, "no data");
    return;
  }

  grep = *(GREP *)arg;
  *grep.stopflag = 0;                   // reset thread-killing flag
  DosError(FERR_DISABLEHARDERR);
  priority_normal();

  ghab = WinInitialize(0);
  if (ghab) {
    grep.ghab = ghab;
    ghmq = WinCreateMsgQueue(ghab, 0);
    if (ghmq) {
      WinCancelShutdown(ghmq, TRUE);
      IncrThreadUsage();
      // DosSleep(100); //05 Aug 07 GKY 128     // 07 Feb 08 SHL
      // hwndStatus does not exist for applet
      WinSetWindowText(hwndStatus ? hwndStatus : grep.hwndCurFile,
                       GetPString(grep.finddupes ? IDS_GREPDUPETEXT :
                                                   IDS_GREPSCANTEXT));

      pp = grep.searchPattern;
      while (*pp) {
        if (!grep.absFlag) {
          p = GREPCHARS;                // see if any sense in pattern matching
          while (*p) {
            if (strchr(pp, *p))
              break;
            p++;
          }
          if (!*p)                      // nope, turn it off
            grep.absFlag = TRUE;
        }
        pp = pp + strlen(pp) + 1;
      }

      grep.attrFile &= (~FILE_DIRECTORY);
      grep.antiattr &= (~FILE_DIRECTORY);
      if (grep.antiattr & FILE_READONLY)
        grep.antiattr |= MUST_HAVE_READONLY;
      if (grep.antiattr & FILE_HIDDEN)
        grep.antiattr |= MUST_HAVE_HIDDEN;
      if (grep.antiattr & FILE_SYSTEM)
        grep.antiattr |= MUST_HAVE_SYSTEM;
      if (grep.antiattr & FILE_ARCHIVED)
        grep.antiattr |= MUST_HAVE_ARCHIVED;

      grep.anyexcludes = FALSE;
      numfls = 0;
      fle[numfls++] = strtok(grep.tosearch, ";");

      while ((fle[numfls] = strtok(NULL, ";")) != NULL && numfls < 511) {
        if (*fle[numfls] == '/')
          grep.anyexcludes = TRUE;
        numfls++;
      }

      InitITimer(&itdSleep, 500);       // Sleep every 500 mSec
      InitITimer(&itdReport, 2000);     // Report every 2 sec

      // loop through search masks
      for (x = 0; x < numfls; x++) {

        if (*fle[x] == '/')             // is an exclude mask only
          goto ExcludeSkip;

        // first, separate any path from mask

        p = (char *)(fle[x] + (strlen(fle[x]) - 1));
        while (*p != '\\' && *p != ':' && p != fle[x])
          --p;

        if (p == fle[x]) {              // no path
          strcpy(searchPath, grep.curdir);
          strncpy(grep.fileMask, fle[x], CCHMAXPATH);
          grep.fileMask[CCHMAXPATH - 1] = 0;
        }
        else {                          // got to deal with a path
          if (*p == ':') {              // just a drive, start in root dir
            *p = 0;
            p++;
            strncpy(searchPath, fle[x], CCHMAXPATH - 2);
            searchPath[CCHMAXPATH - 3] = 0;
            strcat(searchPath, ":\\");
            strcpy(grep.fileMask, p);
          }
          if (*p == '\\') {
            // got a 'full' path
            CHAR temp;

            p++;
            temp = *p;
            *p = 0;
            strncpy(searchPath, fle[x], CCHMAXPATH);
            searchPath[CCHMAXPATH - 1] = 0;
            *p = temp;
            strcpy(grep.fileMask, p);
          }
          if (!*grep.fileMask)
            strcpy(grep.fileMask, "*");
        }
        if (*grep.stopflag)
          break;
        // do single directory
        DoMatchingFiles(&grep, searchPath, fle, numfls, &itdSleep, &itdReport);
        if (grep.dirFlag)               // do subdirs
          DoAllSubdirs(&grep, searchPath, FALSE, fle, numfls, &itdSleep, &itdReport);
      ExcludeSkip:
        if (*grep.stopflag)
          break;
        if (WinIsWindow(grep.ghab, grep.hwndFiles))
          DoInsertion(&grep, &itdSleep, &itdReport);    // insert any remaining objects
      } // for

      if (WinIsWindow(grep.ghab, grep.hwndFiles))
        DoInsertion(&grep, &itdSleep, &itdReport);      // insert any remaining objects

      if (WinIsWindow(grep.ghab, grep.hwndFiles) &&
          grep.finddupes &&
          !*grep.stopflag)
      {
        FillDupes(&grep, &itdSleep, &itdReport);
      }

      if (!PostMsg(grep.hwndFiles, UM_CONTAINER_FILLED, MPVOID, MPVOID))        // tell window we're done
        WinSendMsg(grep.hwndFiles, UM_CONTAINER_FILLED, MPVOID, MPVOID);
      WinDestroyMsgQueue(ghmq);
    }
    DecrThreadUsage();
    WinTerminate(ghab);
  }
  if (!ghmq || !ghab)
    WinPostMsg(grep.hwndFiles, UM_CONTAINER_FILLED, MPVOID, MPVOID);
  if (grep.dupehead)
    FreeDupes(&grep);
  if (grep.numlines && grep.matched)
    free(grep.matched);
  // 07 Feb 08 SHL fixme to free grep here when not static
  DosPostEventSem(CompactSem);
}

static BOOL IsExcluded(CHAR *name, CHAR **fle, UINT numfls)
{
  UINT x;
  CHAR *n;

  n = strrchr(name, '\\');
  if (!n)
    n = strrchr(name, ':');
  if (n)
    n++;
  else
    n = name;
  for (x = 0; x < numfls; x++) {
    if (*fle[x] == '/' &&
        wildcard((strchr(fle[x], '\\') ||
                  strchr(fle[x], ':')) ? name : n, fle[x] + 1, FALSE))
      return TRUE;
  }
  return FALSE;
}

static VOID DoAllSubdirs(GREP *grep,
                         CHAR *searchPath,
                         BOOL recursing,
                         CHAR **fle,
                         UINT numfls,
                         ITIMER_DESC *pitdSleep,
                         ITIMER_DESC *pitdReport)
{
  // process all subdirectories

  FILEFINDBUF4 ffb;
  HDIR findHandle = HDIR_CREATE;
  LONG ulFindCnt = 1;
  CHAR *p = NULL;

  // add a mask to search path
  if (searchPath[strlen(searchPath) - 1] != '\\')
    strcat(searchPath, "\\");
  strcat(searchPath, "*");
  // step through all subdirectories
  DosError(FERR_DISABLEHARDERR);
  if (!DosFindFirst(searchPath, &findHandle, (MUST_HAVE_DIRECTORY |
                    FILE_ARCHIVED | FILE_SYSTEM | FILE_HIDDEN | FILE_READONLY),
                    &ffb, (ULONG) sizeof(ffb),
                    (PULONG) & ulFindCnt, FIL_QUERYEASIZE)) {

    // get rid of mask portion, save end-of-directory

    p = strrchr(searchPath, '\\');
    if (p)
      p++;
    else
      p = searchPath;
    do {                                // Process each directory that matches the mask
      priority_normal();
      if (*grep->stopflag)
        break;
      // Skip . and ..
      if (ffb.achName[0] != '.' ||
          (ffb.achName[1] &&
           (ffb.achName[1] != '.' || ffb.achName[2]))) {
        strcpy(p, ffb.achName);
        if (!grep->anyexcludes || !IsExcluded(searchPath, fle, numfls)) {
          // 07 Feb 08 SHL
          if (IsITimerExpired(pitdReport)) {
            if (!hwndStatus)
              WinSetWindowText(grep->hwndCurFile, searchPath);
            else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles) {
              CHAR s[CCHMAXPATH + 64];
              sprintf(s, "%s %s", GetPString(IDS_SCANNINGTEXT), searchPath);
              WinSetWindowText(hwndStatus, s);
            }
          }
          DoMatchingFiles(grep, searchPath, fle, numfls, pitdSleep, pitdReport);
          // 07 Feb 08 SHL
          if (IsITimerExpired(pitdReport)) {
            if (!hwndStatus)
              WinSetWindowText(grep->hwndCurFile, searchPath);
            else {
              if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles) {
                CHAR s[CCHMAXPATH + 64];
                sprintf(s, "%s %s", GetPString(IDS_SCANNINGTEXT), searchPath);
                WinSetWindowText(hwndStatus, s);
              }
            }
          }
          DoAllSubdirs(grep, searchPath, TRUE, fle, numfls, pitdSleep, pitdReport);
          // DosSleep(0); //26 Aug 07 GKY 1     // 07 Feb 08 SHL
        }
      }
      ulFindCnt = 1;
    } while (!DosFindNext(findHandle,
                          &ffb,
                          sizeof(ffb), (PULONG) & ulFindCnt));
    DosFindClose(findHandle);
    priority_normal();
  }
  if (p)                                // strip off last directory addition
    *p = 0;
}

/**
 * Scan for files matching filespecs in single directory
 */

static INT DoMatchingFiles(GREP *grep,
                           CHAR *path,
                           CHAR **fle,
                           UINT numfls,
                           ITIMER_DESC *pitdSleep,
                           ITIMER_DESC *pitdReport)
{
  // process all matching files in a directory

  PFILEFINDBUF4L pffbArray;
  PFILEFINDBUF4L pffbFile;
  ULONG x;
  HDIR findHandle = HDIR_CREATE;
  ULONG ulFindCnt;
  CHAR szFindPath[CCHMAXPATH];
  PSZ p;
  APIRET rc;
  // 06 Oct 07 SHL Correct size for xDosFindFirst
  ULONG ulBufBytes = FilesToGet * sizeof(FILEFINDBUF4L);
  static BOOL fDone;

  pffbArray = xmalloc(ulBufBytes, pszSrcFile, __LINE__);
  if (!pffbArray)
    return 0;

  BldFullPathName(szFindPath, path, grep->fileMask);

  MakeFullName(szFindPath);

  // find and save end-of-dir position
  p = strrchr(szFindPath, '\\');
  if (p)
    p++;
  else
    p = szFindPath;

  // step through matching files
  DosError(FERR_DISABLEHARDERR);
  ulFindCnt = FilesToGet;
  rc = xDosFindFirst(szFindPath,
                     &findHandle,
                     FILE_NORMAL | grep->attrFile | grep->antiattr,
                     pffbArray,
                     ulBufBytes,
                     &ulFindCnt,
                     FIL_QUERYEASIZEL);
  if (!rc) {
    do {
      // Process each file that matches the mask
      priority_normal();
      pffbFile = pffbArray;
      for (x = 0; x < ulFindCnt; x++) {
        if (*grep->stopflag)
          break;
        if (*pffbFile->achName != '.' ||
            (pffbFile->achName[1] && pffbFile->achName[1] != '.')) {
          strcpy(p, pffbFile->achName); // build filename
          if (strlen(szFindPath) > CCHMAXPATH){
            // Complain if pathnames exceeds max
            DosFindClose(findHandle);
            xfree(pffbArray);
            if (!fDone) {
              fDone = TRUE;
              saymsg(MB_OK | MB_ICONASTERISK,
                     HWND_DESKTOP,
                     GetPString(IDS_WARNINGTEXT),
                     "One or more of your files has a full path name that exceeds the OS/2 maximum");
            }
            return 1;
          }

          // 07 Feb 08 SHL
          if (IsITimerExpired(pitdReport)) {
            if (!hwndStatus)
              WinSetWindowText(grep->hwndCurFile, szFindPath);
            else {
              if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles) {
                CHAR s[CCHMAXPATH + 64];
                sprintf(s, "%s %s", GetPString(IDS_SCANNINGTEXT), szFindPath);
                WinSetWindowText(hwndStatus, s);
              }
            }
          }

          if (!grep->anyexcludes || !IsExcluded(szFindPath, fle, numfls)) {
            if (!grep->finddupes)
              DoOneFile(grep, szFindPath, pffbFile, pitdSleep, pitdReport);
            else if (!InsertDupe(grep, szFindPath, pffbFile)) {
              DosFindClose(findHandle);
              xfree(pffbArray);
              return 1;
            }
          }
        }
        if (!pffbFile->oNextEntryOffset)
          break;
        pffbFile = (PFILEFINDBUF4L)((PBYTE)pffbFile + pffbFile->oNextEntryOffset);
      } // for
      if (*grep->stopflag)
        break;
      SleepIfNeeded(pitdSleep, 1);
      // DosSleep(0); //26 Aug 07 GKY 1 // 07 Feb 08 SHL
      ulFindCnt = FilesToGet;
      rc = xDosFindNext(findHandle, pffbArray, ulBufBytes, &ulFindCnt, FIL_QUERYEASIZEL);
    } while (!rc);

    DosFindClose(findHandle);
    priority_normal();
  } // if

  if (rc && rc != ERROR_NO_MORE_FILES) {
    Dos_Error(MB_ENTER, rc, HWND_DESKTOP, pszSrcFile, __LINE__,
              GetPString(IDS_CANTFINDDIRTEXT), szFindPath);
  }

  xfree(pffbArray);
  return 0;
}

static VOID freegreplist(GREP *grep)
{
  UINT x;

  if (grep) {
    if (grep->insertffb) {
      for (x = 0; grep->insertffb[x]; x++)
        free(grep->insertffb[x]);
      free(grep->insertffb);
    }
    if (grep->dir) {
      for (x = 0; grep->dir[x]; x++)
        free(grep->dir[x]);
      free(grep->dir);
    }
    grep->dir = NULL;
    grep->insertffb = NULL;
    grep->toinsert = 0L;
    grep->insertedbytes = 0L;
  }
}

/**
 * Insert record into container
 */

static BOOL DoInsertion(GREP *grep,
                        ITIMER_DESC *pitdSleep,
                        ITIMER_DESC *pitdReport)
{
  RECORDINSERT ri;
  DIRCNRDATA *dcd;
  PCNRITEM pci, pciFirst;
  UINT x;

  if (!grep || !grep->toinsert || !grep->insertffb || !grep->dir)
    return FALSE;

  pci = WinSendMsg(grep->hwndFiles,
                   CM_ALLOCRECORD,
                   MPFROMLONG(EXTRA_RECORD_BYTES),
                   MPFROMLONG(grep->toinsert));
  if (!pci) {
    Win_Error(grep->hwndFiles, grep->hwndFiles, pszSrcFile, __LINE__,
              "CM_ALLOCRECORD %u failed", grep->toinsert);
  }
  else {
    if (grep->sayfiles) {
      if (!hwndStatus)
        WinSetWindowText(grep->hwndCurFile, GetPString(IDS_GREPINSERTINGTEXT));
      else {
        if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
          WinSetWindowText(hwndStatus, GetPString(IDS_GREPINSERTINGTEXT));
      }
    }
    pciFirst = pci;
    dcd = INSTDATA(grep->hwndFiles);
    for (x = 0; grep->insertffb[x]; x++) {
      FillInRecordFromFFB(grep->hwndFiles,
                          pci, grep->dir[x], grep->insertffb[x], FALSE, dcd);
      pci = (PCNRITEM) pci->rc.preccNextRecord;
      SleepIfNeeded(pitdSleep, 1);
    } // for
    memset(&ri, 0, sizeof(RECORDINSERT));
    ri.cb = sizeof(RECORDINSERT);
    ri.pRecordOrder = (PRECORDCORE) CMA_END;
    ri.pRecordParent = (PRECORDCORE) NULL;
    ri.zOrder = (USHORT) CMA_TOP;
    ri.cRecordsInsert = grep->toinsert;
    ri.fInvalidateRecord = TRUE;
    WinSendMsg(grep->hwndFiles,
               CM_INSERTRECORD, MPFROMP(pciFirst), MPFROMP(&ri));
    if (dcd) {
      DosEnterCritSec();
      dcd->ullTotalBytes += grep->insertedbytes;
      DosExitCritSec();
    }
    SleepIfNeeded(pitdSleep, 1);
    // if (grep->toinsert == FilesToGet)        // 07 Feb 08 SHL
    //  DosSleep(0);  //26 Aug 07 GKY 1 // 07 Feb 08 SHL
    freegreplist(grep);
    PostMsg(grep->hwndFiles, UM_RESCAN, MPVOID, MPVOID);
    return TRUE;
  }
  freegreplist(grep);
  return FALSE;
}

/**
 * Insert file ffb and directory name into lists
 */

static BOOL InsertGrepFile(GREP *grep,
                           CHAR *pszFileName,
                           PFILEFINDBUF4L pffb,
                           ITIMER_DESC *pitdSleep,
                           ITIMER_DESC *pitdReport)
{
  PSZ p;
  CHAR szDirectory[CCHMAXPATH];

  if (!WinIsWindow(grep->ghab, grep->hwndFiles)) {
    // Window closed - clean up and go away
    freegreplist(grep);
  }
  else {
    grep->numfiles++;
    strcpy(szDirectory, pszFileName);
    p = strrchr(szDirectory, '\\');

    if (p) {
      // Got directory
      if (p < szDirectory + 4)
        p++;                            // Include root backslash
      *p = 0;

      if (!grep->insertffb) {
        // Allocate 1 extra for end marker?
        grep->insertffb = xmallocz(sizeof(PFILEFINDBUF4L) * (FilesToGet + 1),
                                   pszSrcFile, __LINE__);
        if (!grep->insertffb)
          return FALSE;
        grep->dir = xmallocz(sizeof(CHAR *) * (FilesToGet + 1),
                             pszSrcFile, __LINE__);
        if (!grep->dir) {
          xfree(grep->insertffb);
          return FALSE;
        }
      }

      grep->insertffb[grep->toinsert] =
        xmalloc(sizeof(FILEFINDBUF4L), pszSrcFile, __LINE__);
      if (!grep->insertffb[grep->toinsert])
        return FALSE;
      memcpy(grep->insertffb[grep->toinsert], pffb, sizeof(FILEFINDBUF4L));

      grep->dir[grep->toinsert] = xstrdup(szDirectory, pszSrcFile, __LINE__);
      if (!grep->dir) {
        xfree(grep->insertffb[grep->toinsert]);
        return FALSE;
      }

      grep->insertedbytes += pffb->cbFile + CBLIST_TO_EASIZE(pffb->cbList);
      grep->toinsert++;
      if (grep->toinsert == FilesToGet)
        return DoInsertion(grep, pitdSleep, pitdReport);
      return TRUE;
    }
  }
  return FALSE;
}

/**
 * Check file matches search criteria
 */

static BOOL DoOneFile(GREP *grep,
                      CHAR *pszFileName,
                      FILEFINDBUF4L *pffb,
                      ITIMER_DESC *pitdSleep,
                      ITIMER_DESC *pitdReport)
{
  // process a single file
  CHAR *input;
  FILE *inputFile;
  ULONG pos;
  BOOL ret = FALSE, strmatch = FALSE;

  grep->fileCount++;
  if (grep->sayfiles) {
    if (!hwndStatus)
      WinSetWindowText(grep->hwndCurFile, pszFileName);
    else {
      if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
        WinSetWindowText(hwndStatus, pszFileName);
    }
  }

  if (grep->greaterthan || grep->lessthan) {

    BOOL keep = TRUE;
    ULONG adjsize;

    adjsize = pffb->cbFile + (grep->searchEAs ? CBLIST_TO_EASIZE(pffb->cbList) : 0);
    if (grep->greaterthan) {
      if (adjsize < grep->greaterthan)
        keep = FALSE;
    }
    if (keep && grep->lessthan) {
      if (adjsize > grep->lessthan)
        keep = FALSE;
    }
    if (!keep)
      return ret;
  }

  if (grep->newerthan || grep->olderthan) {

    BOOL keep = TRUE;
    ULONG numsecs;

    numsecs = SecsSince1980(&pffb->fdateLastWrite, &pffb->ftimeLastWrite);
    if (grep->newerthan) {
      if (numsecs < grep->newerthan)
        keep = FALSE;
    }
    if (keep && grep->olderthan) {
      if (numsecs > grep->olderthan)
        keep = FALSE;
    }
    if (!keep)
      return ret;
  }

  if ((!grep->searchEAs && !grep->searchFiles) || !*grep->searchPattern)        // just a find
    return InsertGrepFile(grep, pszFileName, pffb, pitdSleep, pitdReport);

  if (grep->searchEAs) {

    HOLDFEA *head, *info;
    USHORT type, len;
    BOOL alltext;
    CHAR *data, temp;

    head = GetFileEAs(pszFileName, FALSE, TRUE);
    if (head) {
      info = head;
      while (info && !strmatch) {
        alltext = TRUE;
        switch (*(USHORT *)info->value) {
        case EAT_ASCII:
          if (match(info->value + (sizeof(USHORT) * 2),
                    grep->searchPattern, grep->absFlag,
                    grep->caseFlag == FALSE,
                    info->cbValue - (sizeof(USHORT) * 2),
                    grep->numlines,
                    grep->matched,
                    !grep->findifany)) {
            strmatch = TRUE;
          }
          break;
        case EAT_MVST:
          type = *(USHORT *)(info->value + (sizeof(USHORT) * 3));
          if (type == EAT_ASCII) {
            data = info->value + (sizeof(USHORT) * 4);
            len = *(USHORT *) data;
            data += sizeof(USHORT);
            while ((data - info->value) + len <= info->cbValue) {
              temp = *(data + len);
              *(data + len) = 0;
              if (match(data,
                        grep->searchPattern,
                        grep->absFlag,
                        (grep->caseFlag == FALSE),
                        len,
                        grep->numlines, grep->matched, !grep->findifany)) {
                strmatch = TRUE;
                break;
              }
              data += len;
              if (data - info->value >= info->cbValue)
                break;
              *data = temp;
              len = *(USHORT *) data;
              data += sizeof(USHORT);
            }
          }
          break;
        case EAT_MVMT:
          data = info->value + (sizeof(USHORT) * 3);
          type = *(USHORT *) data;
          data += sizeof(USHORT);
          len = *(USHORT *) data;
          data += sizeof(USHORT);
          while ((data - info->value) - len <= info->cbValue) {
            if (type != EAT_ASCII) {
              alltext = FALSE;
              break;
            }
            data += len;
            if (data - info->value >= info->cbValue)
              break;
            type = *(USHORT *) data;
            data += sizeof(USHORT);
            len = *(USHORT *) data;
            data += sizeof(USHORT);
          }
          if (alltext) {
            data = info->value + (sizeof(USHORT) * 3);
            type = *(USHORT *) data;
            data += sizeof(USHORT);
            len = *(USHORT *) data;
            data += sizeof(USHORT);
            while ((data - info->value) - len <= info->cbValue) {
              temp = *(data + len);
              *(data + len) = 0;
              if (match(data,
                        grep->searchPattern,
                        grep->absFlag,
                        (grep->caseFlag == FALSE),
                        len,
                        grep->numlines, grep->matched, !grep->findifany)) {
                strmatch = TRUE;
                break;
              }
              data += len;
              *data = temp;
              if (data - info->value >= info->cbValue)
                break;
              type = *(USHORT *) data;
              data += sizeof(USHORT);
              len = *(USHORT *) data;
              data += sizeof(USHORT);
            }
          }
          break;
        default:
          break;
        }
        info = info->next;
      }                                 // while
      Free_FEAList(head);
      // DosSleep(1);                   // 07 Feb 08 SHL
    }
  }

  if (grep->searchFiles) {
    input = xmalloc(65537, pszSrcFile, __LINE__);
    if (input) {
      LONG len;

      inputFile = _fsopen(pszFileName, "rb", SH_DENYNO);
      if (inputFile) {
        pos = ftell(inputFile);
        while (!feof(inputFile)) {
          if (pos)
            fseek(inputFile, pos - 1024, SEEK_SET);
          len = fread(input, 1, 65536, inputFile);
          if (len >= 0) {
            if (*grep->stopflag)
              break;
            if (match(input,
                      grep->searchPattern,
                      grep->absFlag,
                      (grep->caseFlag == FALSE),
                      len, grep->numlines, grep->matched, !grep->findifany)) {
              strmatch = TRUE;
              break;
            }
          }
          else
            break;
        }
        fclose(inputFile);
      }
      xfree(input);
      // DosSleep(1);                   // 07 Feb 08 SHL
    }
  } // if

  if (strmatch)
    ret = InsertGrepFile(grep, pszFileName, pffb, pitdSleep, pitdReport);
  return ret;
}

static LONG cr3tab[] = {                // CRC polynomial 0xEDB88320

  0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
  0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
  0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
  0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
  0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
  0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
  0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
  0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
  0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
  0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
  0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
  0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
  0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
  0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
  0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
  0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
  0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
  0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
  0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
  0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
  0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
  0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
  0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
  0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
  0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
  0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
  0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
  0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
  0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
  0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
  0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
  0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
  0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
  0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
  0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
  0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
  0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
  0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
  0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
  0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
  0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
  0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
  0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

LONG CRCBlock(register CHAR *str, register INT blklen, register LONG crc)
{
  while (blklen--) {
    crc =
      cr3tab[((INT) crc ^ *str) & 0xff] ^ (((ULONG) crc >> 8) & 0x00FFFFFF);
    str++;
  }
  return crc;
}

LONG CRCFile(CHAR *pszFileName, INT *error)
{
  LONG CRC = -1L, len;
  FILE *fp;
  CHAR *buffer;

  *error = 0;
  buffer = xmalloc(65535, pszSrcFile, __LINE__);
  if (!buffer)
    *error = -1;
  else {
    fp = _fsopen(pszFileName, "rb", SH_DENYNO);
    if (!fp)
      *error = -2;
    else {
      while (!feof(fp)) {
        len = fread(buffer, 1, 65535, fp);
        if (len && len < 65536L)
          CRC = CRCBlock(buffer, len, CRC);
        else
          break;
        // DosSleep(0); //26 Aug 07 GKY 1       // 07 Feb 08 SHL
      }
      fclose(fp);
      // DosSleep(1);                   // 07 Feb 08 SHL
    }
    xfree(buffer);
  }
  return CRC;
}

static VOID FreeDupes(GREP *grep)
{
  DUPES *i, *next;

  i = grep->dupehead;
  while (i) {
    next = i->next;
    if (i->name)
      free(i->name);
    free(i);
    i = next;
  }
  grep->dupehead = grep->dupelast = NULL;
  xfree(grep->dupenames);
  xfree(grep->dupesizes);
  grep->dupesizes = grep->dupenames = NULL;
}

INT comparenamesq(const VOID *v1, const VOID *v2)
{
  DUPES *d1 = *(DUPES **) v1;
  DUPES *d2 = *(DUPES **) v2;
  CHAR *p1, *p2;

  p1 = strrchr(d1->name, '\\');
  if (p1)
    p1++;
  else
    p1 = d1->name;
  p2 = strrchr(d2->name, '\\');
  if (p2)
    p2++;
  else
    p2 = d2->name;
  return stricmp(p1, p2);
}

INT comparenamesqe(const VOID *v1, const VOID *v2)
{
  DUPES *d1 = *(DUPES **) v1;
  DUPES *d2 = *(DUPES **) v2;
  CHAR *p1, *p2, *p1e, *p2e, e1, e2;
  INT ret;

  p1 = strrchr(d1->name, '\\');
  if (p1)
    p1++;
  else
    p1 = d1->name;
  p1e = strrchr(p1, '.');
  if (p1e) {
    e1 = *p1e;
    *p1e = 0;
  }
  p2 = strrchr(d2->name, '\\');
  if (p2)
    p2++;
  else
    p2 = d2->name;
  p2e = strrchr(p2, '.');
  if (p2e) {
    e2 = *p2e;
    *p2e = 0;
  }
  ret = stricmp(p1, p2);
  if (p1e)
    *p1e = e1;
  if (p2e)
    *p2e = e2;
  return ret;
}

INT comparesizesq(const void *v1, const void *v2)
{
  DUPES *d1 = *(DUPES **) v1;
  DUPES *d2 = *(DUPES **) v2;

  return (d1->size > d2->size) ? 1 : (d1->size == d2->size) ? 0 : -1;
}

INT comparenamesb(const void *v1, const void *v2)
{
  DUPES *d1 = (DUPES *) v1;
  DUPES *d2 = *(DUPES **) v2;
  CHAR *p1, *p2;

  p1 = strrchr(d1->name, '\\');
  if (p1)
    p1++;
  else
    p1 = d1->name;
  p2 = strrchr(d2->name, '\\');
  if (p2)
    p2++;
  else
    p2 = d2->name;
  return stricmp(p1, p2);
}

INT comparenamesbe(const VOID *v1, const VOID *v2)
{
  DUPES *d1 = (DUPES *) v1;
  DUPES *d2 = *(DUPES **) v2;
  CHAR *p1, *p2, *p1e, *p2e, e1, e2;
  INT ret;

  p1 = strrchr(d1->name, '\\');
  if (p1)
    p1++;
  else
    p1 = d1->name;
  p1e = strrchr(p1, '.');
  if (p1e) {
    e1 = *p1e;
    *p1e = 0;
  }
  p2 = strrchr(d2->name, '\\');
  if (p2)
    p2++;
  else
    p2 = d2->name;
  p2e = strrchr(p2, '.');
  if (p2e) {
    e2 = *p2e;
    *p2e = 0;
  }
  ret = stricmp(p1, p2);
  if (p1e)
    *p1e = e1;
  if (p2e)
    *p2e = e2;
  return ret;
}

INT comparesizesb(const VOID *v1, const VOID *v2)
{
  DUPES *d1 = (DUPES *) v1;
  DUPES *d2 = *(DUPES **) v2;

  return (d1->size > d2->size) ? 1 : (d1->size == d2->size) ? 0 : -1;
}

static VOID FillDupes(GREP *grep,
                      ITIMER_DESC *pitdSleep,
                      ITIMER_DESC *pitdReport)
{
  DUPES *c, *i, **r;
  register CHAR *pc, *pi;
  CHAR **list = NULL;
  UINT numfiles = 0, numalloced = 0;
  INT error;
  ULONG x;
  ULONG y;
  // ULONG cntr = 1000;                 // 09 Feb 08 SHL

  // if (grep->CRCdupes)                // 09 Feb 08 SHL
  //  cntr = 100;                       // 09 Feb 08 SHL
  x = 0;
  for (i = grep->dupehead; i; i = i->next)
    x++;                                // Count

  if (x) {
    if (!hwndStatus)
      WinSetWindowText(grep->hwndCurFile, GetPString(IDS_GREPDUPESORTINGTEXT));
    else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
      WinSetWindowText(hwndStatus, GetPString(IDS_GREPDUPESORTINGTEXT));
    // DosSleep(0);  //26 Aug 07 GKY 1  // 07 Feb 08 SHL
    grep->dupenames = xmalloc(sizeof(DUPES *) * (x + 1), pszSrcFile, __LINE__);
    if (!grep->nosizedupes)
      grep->dupesizes = xmalloc(sizeof(DUPES *) * (x + 1), pszSrcFile, __LINE__);
    if (grep->dupenames && (grep->nosizedupes || grep->dupesizes)) {
      y = 0;
      for (i = grep->dupehead; i; i = i->next) {
        grep->dupenames[y] = i;
        if (!grep->nosizedupes)
          grep->dupesizes[y] = i;
        y++;
      }
      grep->dupenames[y] = NULL;        // Mark end
      if (!grep->nosizedupes)
        grep->dupesizes[y] = NULL;

      InitITimer(pitdSleep, 0);         // Reset rate estimator
      SleepIfNeeded(pitdSleep, 1);
      // DosSleep(0); //26 Aug 07 GKY 1 // 07 Feb 08 SHL

      qsort(grep->dupenames,
            x,
            sizeof(DUPES *),
            grep->ignoreextdupes ? comparenamesqe : comparenamesq);
      SleepIfNeeded(pitdSleep, 1);
      // DosSleep(0); //26 Aug 07 GKY 1 // 07 Feb 08 SHL
      if (!grep->nosizedupes) {
        qsort(grep->dupesizes, x, sizeof(DUPES *), comparesizesq);
        SleepIfNeeded(pitdSleep, 1);
        // DosSleep(0); //26 Aug 07 GKY 1       // 07 Feb 08 SHL
      }

      if (!hwndStatus)
        WinSetWindowText(grep->hwndCurFile, GetPString(IDS_GREPDUPECOMPARINGTEXT));
      else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
        WinSetWindowText(hwndStatus, GetPString(IDS_GREPDUPECOMPARINGTEXT));

      InitITimer(pitdSleep, 0);         // Reset rate estimator
      i = grep->dupehead;
      y = 0;
      while (i) {
        if (*grep->stopflag)
          break;
        SleepIfNeeded(pitdSleep, 1);    // 07 Feb 08 SHL
        if (!(i->flags & GF_SKIPME)) {
          r = (DUPES **) bsearch(i, grep->dupenames, x, sizeof(DUPES *),
                                 ((grep->ignoreextdupes) ? comparenamesbe :
                                  comparenamesb));
          if (r) {
            while (r > grep->dupenames && ((grep->ignoreextdupes) ?
                                        !comparenamesqe((r - 1), &i) :
                                        !comparenamesq((r - 1), &i)))
              r--;
            while (*r && ((grep->ignoreextdupes) ?
                          !comparenamesqe(r, &i) : !comparenamesq(r, &i))) {
              if (*r == i || ((*r)->flags & (GF_INSERTED | GF_SKIPME))) {
                r++;
                continue;
              }
              if (grep->CRCdupes) {
                if ((*r)->CRC == -1L) {
                  (*r)->CRC = CRCFile((*r)->name, &error);
                  if (error)
                    (*r)->CRC = -1L;
                  else if ((*r)->CRC == -1L)
                    (*r)->CRC = 0L;
                }
                if (i->CRC == -1L) {
                  i->CRC = CRCFile(i->name, &error);
                  if (error)
                    i->CRC = -1L;
                  else if (i->CRC == -1L)
                    i->CRC = 0L;
                }
                if (((*r)->size != i->size) || ((*r)->CRC != -1L &&
                                                i->CRC != -1L
                                                && (*r)->CRC != i->CRC)) {
                  r++;
                  continue;
                }
              }
              if (!AddToList((*r)->name, &list, &numfiles, &numalloced)) {
                (*r)->flags |= GF_INSERTED;
                if (grep->sayfiles) {
                  if (!hwndStatus)
                    WinSetWindowText(grep->hwndFiles, (*r)->name);
                  else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
                    WinSetWindowText(hwndStatus, (*r)->name);
                }
                if ((*r)->size == i->size &&
                    (i->date.year == (*r)->date.year &&
                     i->date.month == (*r)->date.month &&
                     i->date.day == (*r)->date.day &&
                     i->time.hours == (*r)->time.hours &&
                     i->time.minutes == (*r)->time.minutes &&
                     i->time.twosecs == (*r)->time.twosecs))
                  (*r)->flags |= GF_SKIPME;
              }
              if (!(i->flags & (GF_INSERTED | GF_SKIPME))) {
                if (!AddToList(i->name, &list, &numfiles, &numalloced)) {
                  i->flags |= GF_INSERTED;
                  if ((*r)->flags & GF_SKIPME)
                    i->flags |= GF_SKIPME;
                }
              }
              r++;
            }
          }
          if (!grep->nosizedupes) {
            r = (DUPES **) bsearch(i,
                                   grep->dupesizes,
                                   x, sizeof(DUPES *), comparesizesb);
            if (r) {
              while (r > grep->dupesizes && !comparesizesq((r - 1), &i))
                r--;
              while (*r && !comparesizesq(r, &i)) {
                if (*r == i || ((*r)->flags & (GF_INSERTED | GF_SKIPME)) ||
                    (i->date.year != (*r)->date.year ||
                     i->date.month != (*r)->date.month ||
                     i->date.day != (*r)->date.day ||
                     i->time.hours != (*r)->time.hours ||
                     i->time.minutes != (*r)->time.minutes ||
                     i->time.twosecs != (*r)->time.twosecs)) {
                  r++;
                  continue;
                }
                if (grep->CRCdupes) {
                  if ((*r)->CRC == -1L) {
                    (*r)->CRC = CRCFile((*r)->name, &error);
                    if (error)
                      (*r)->CRC = -1L;
                    else if ((*r)->CRC == -1L)
                      (*r)->CRC = 0L;
                  }
                  if (i->CRC == -1L) {
                    i->CRC = CRCFile(i->name, &error);
                    if (error)
                      i->CRC = -1L;
                    else if (i->CRC == -1L)
                      i->CRC = 0L;
                  }
                  if ((*r)->CRC != -1L && i->CRC != -1L &&
                      (*r)->CRC != i->CRC) {
                    *r += 1;
                    continue;
                  }
                }
                if (!AddToList((*r)->name, &list, &numfiles, &numalloced)) {
                  if (grep->sayfiles) {
                    if (!hwndStatus)
                      WinSetWindowText(grep->hwndCurFile, (*r)->name);
                    else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
                      WinSetWindowText(hwndStatus, (*r)->name);
                  }
                  (*r)->flags |= GF_INSERTED;
                  if (((grep->ignoreextdupes) ?
                       comparenamesqe(r, &i) : comparenamesq(r, &i)))
                    (*r)->flags |= GF_SKIPME;
                }
                if (!(i->flags & (GF_INSERTED | GF_SKIPME))) {
                  if (!AddToList(i->name, &list, &numfiles, &numalloced)) {
                    i->flags |= GF_INSERTED;
                    if ((*r)->flags & GF_SKIPME)
                      i->flags |= GF_SKIPME;
                  }
                }
                r++;
              }
            }
          }
        }
        i = i->next;
        y++;
        // 08 Feb 08 SHL
        if (IsITimerExpired(pitdReport)) {
          CHAR s[44];
          sprintf(s, GetPString(IDS_GREPDUPECHECKPROGTEXT), y, grep->numfiles);
          if (!hwndStatus)
            WinSetWindowText(grep->hwndCurFile, s);
          else {
            if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
              WinSetWindowText(hwndStatus, s);
          }
        }
        // DosSleep(0); //26 Aug 07 GKY 1
      } // while
    }
    else {
      // Insufficient memory - fall back to slow method - fixme to saymsg?
      DosBeep(50, 100);
      if (!hwndStatus)
        WinSetWindowText(grep->hwndCurFile, GetPString(IDS_GREPDUPECOMPARINGTEXT));
      else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
        WinSetWindowText(hwndStatus, GetPString(IDS_GREPDUPECOMPARINGTEXT));
      x = y = 0;
      xfree(grep->dupenames);
      grep->dupenames = NULL;
      xfree(grep->dupesizes);
      grep->dupesizes = NULL;

      InitITimer(pitdSleep, 0);         // Reset rate estimator
      i = grep->dupehead;
      while (i) {
        if (*grep->stopflag)
          break;
        SleepIfNeeded(pitdSleep, 1);
        if (!(i->flags & GF_SKIPME)) {
          if (IsITimerExpired(pitdReport)) {
            // if (!(y % cntr)) { }
            CHAR s[44];
            sprintf(s, GetPString(IDS_GREPDUPECHECKPROGTEXT), y, grep->numfiles);
            if (!hwndStatus)
              WinSetWindowText(grep->hwndCurFile, s);
            else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
              WinSetWindowText(hwndStatus, s);
            // DosSleep(0); //26 Aug 07 GKY 1   // 07 Feb 08 SHL
          }
          y++;
          pi = strrchr(i->name, '\\');
          if (pi)
            pi++;
          else
            pi = i->name;
          c = grep->dupehead;
          while (c) {
            if (*grep->stopflag)
              break;
            if (c != i && !(c->flags & (GF_INSERTED | GF_SKIPME))) {
              x++;
              pc = strrchr(c->name, '\\');
              if (pc)
                pc++;
              else
                pc = c->name;
              if ((!grep->nosizedupes && i->size == c->size && i->date.year == c->date.year && i->date.month == c->date.month && i->date.day == c->date.day && i->time.hours == c->time.hours && i->time.minutes == c->time.minutes && i->time.twosecs == c->time.twosecs) || !stricmp(pc, pi)) {       // potential dupe
                if (grep->CRCdupes) {
                  if (grep->CRCdupes) {
                    if (c->CRC == -1L) {
                      c->CRC = CRCFile(c->name, &error);
                      if (error)
                        c->CRC = -1L;
                      else if (c->CRC == -1L)
                        c->CRC = 0L;
                    }
                    if (i->CRC == -1L) {
                      i->CRC = CRCFile(i->name, &error);
                      if (error)
                        i->CRC = -1L;
                      else if (i->CRC == -1L)
                        i->CRC = 0L;
                    }
                    if ((c->size != i->size) || (c->CRC != -1L &&
                                                 i->CRC != -1L
                                                 && c->CRC != i->CRC)) {
                      c = c->next;
                      continue;
                    }
                  }
                }
                if (AddToList(c->name, &list, &numfiles, &numalloced))
                  goto BreakOut;        // Failed
                if (!(i->flags & GF_INSERTED)) {
                  if (AddToList(i->name, &list, &numfiles, &numalloced))
                    goto BreakOut;      // Failed
                }
                if (grep->sayfiles) {
                  if (!hwndStatus)
                    WinSetWindowText(grep->hwndCurFile, pc);
                  else if (WinQueryFocus(HWND_DESKTOP) == grep->hwndFiles)
                    WinSetWindowText(hwndStatus, pc);
                }
                c->flags |= GF_INSERTED;
                i->flags |= GF_INSERTED;
                if (!stricmp(pc, pi)) {
                  c->flags |= GF_SKIPME;
                  i->flags |= GF_SKIPME;
                }
              }
              // else if (!(x % 100))   // 07 Feb 08 SHL
              //        DosSleep(0);  //26 Aug 07 GKY 1 // 07 Feb 08 SHL
            }
            c = c->next;
          }
        }
        i = i->next;
      } // while
    }
  }
BreakOut:
  FreeDupes(grep);
  if (numfiles && list) {
    if (!PostMsg(grep->hwndFiles,
                 WM_COMMAND,
                 MPFROM2SHORT(IDM_COLLECTOR, 0),
                 MPFROMP(list)))
      FreeList(list);
  }
  else
    DosPostEventSem(CompactSem);
}

static BOOL InsertDupe(GREP *grep, CHAR *dir, FILEFINDBUF4L *pffb)
{
  DUPES *info;

  if (*dir) {
    info = xmallocz(sizeof(DUPES), pszSrcFile, __LINE__);
    if (!info)
      return FALSE;

    info->name = xstrdup(dir, pszSrcFile, __LINE__);
    if (!info->name) {
      xfree(info);
      return FALSE;
    }

    info->size = pffb->cbFile;
    info->date = pffb->fdateLastWrite;
    info->time = pffb->ftimeLastWrite;
    info->CRC = -1L;
    grep->numfiles++;
    if (!grep->dupehead)
      grep->dupehead = info;
    if (grep->dupelast)
      grep->dupelast->next = info;
    grep->dupelast = info;
    info->next = NULL;
  }
  return TRUE;
}

#pragma alloc_text(GREP,InsertGrepFile,DoOneFile,DoInsertion,freegreplist)
#pragma alloc_text(GREP,SecsSince1980,match,mmatch,GrepThread)
#pragma alloc_text(GREP,DoAllSubdirs,DoMatchingFiles,InsertDupes,FreeDupes)

#pragma alloc_text(DUPES,InsertDupe,FillDupes,FreeDupes,CRCFile,CRCBlock)
#pragma alloc_text(DUPES,comparenamesq,comparenamesqe,comparenamesb)
#pragma alloc_text(DUPES,comparenamesbe,comparesizesq,comparesizesb)