Method FindProc

Libraries/unrar/scantree.cpp:240–447

SCAN_CODE ScanTree::FindProc(FindData *FD)
{
  if (*CurMask==0)
    return SCAN_NEXT;
  bool FastFindFile=false;
  
  if (FindStack[Depth]==NULL) // No FindFile object for this depth yet.
  {
    bool Wildcards=IsWildcard(CurMask);

    // If we have a file name without wildcards, we can try to use
    // FastFind to optimize speed. For example, in Unix it results in
    // stat call instead of opendir/readdir/closedir.
    bool FindCode=!Wildcards && FindFile::FastFind(CurMask,FD,GetLinks);

    // Link check is important for NTFS, where links can have "Directory"
    // attribute, but we do not want to recurse to them in "get links" mode.
    bool IsDir=FindCode && FD->IsDir && (!GetLinks || !FD->IsLink);

    // SearchAll means that we'll use "*" mask for search, so we'll find
    // subdirectories and will be able to recurse into them.
    // We do not use "*" for directories at any level or for files
    // at top level in recursion mode. We always comrpess the entire directory
    // if folder wildcard is specified.
    bool SearchAll=!IsDir && (Depth>0 || Recurse==RECURSE_ALWAYS ||
                   FolderWildcards && Recurse!=RECURSE_DISABLE || 
                   Wildcards && Recurse==RECURSE_WILDCARDS || 
                   ScanEntireDisk && Recurse!=RECURSE_DISABLE);
    if (Depth==0)
      SearchAllInRoot=SearchAll;
    if (SearchAll || Wildcards)
    {
      // Create the new FindFile object for wildcard based search.
      FindStack[Depth]=new FindFile;

      wchar SearchMask[NM];
      wcsncpyz(SearchMask,CurMask,ASIZE(SearchMask));
      if (SearchAll)
        SetName(SearchMask,MASKALL,ASIZE(SearchMask));
      FindStack[Depth]->SetMask(SearchMask);
    }
    else
    {
      // Either we failed to fast find or we found a file or we found
      // a directory in RECURSE_DISABLE mode, so we do not need to scan it.
      // We can return here and do not need to process further.
      // We need to process further only if we fast found a directory.
      if (!FindCode || !IsDir || Recurse==RECURSE_DISABLE)
      {
         // Return SCAN_SUCCESS if we found a file.
        SCAN_CODE RetCode=SCAN_SUCCESS;

        if (!FindCode)
        {
          // Return SCAN_ERROR if problem is more serious than just
          // "file not found".
          RetCode=FD->Error ? SCAN_ERROR:SCAN_NEXT;