kc3-lang/gnulib/lib/readdir.c

• Show log

  Commit

• Hash : 281b825e
  Author :
  Date : 2018-01-01T00:57:25
  

  maint: Run 'make update-copyright'
  

Download

• lib/readdir.c

• /* Read the next entry of a directory.
     Copyright (C) 2011-2018 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <dirent.h>
  
  #include <errno.h>
  #include <stddef.h>
  
  #include "dirent-private.h"
  
  struct dirent *
  readdir (DIR *dirp)
  {
    char type;
    struct dirent *result;
  
    /* There is no need to add code to produce entries for "." and "..".
       According to the POSIX:2008 section "4.12 Pathname Resolution"
       <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html>
       "." and ".." are syntactic entities.
       POSIX also says:
         "If entries for dot or dot-dot exist, one entry shall be returned
          for dot and one entry shall be returned for dot-dot; otherwise,
          they shall not be returned."  */
  
    switch (dirp->status)
      {
      case -2:
        /* End of directory already reached.  */
        return NULL;
      case -1:
        break;
      case 0:
        if (!FindNextFile (dirp->current, &dirp->entry))
          {
            switch (GetLastError ())
              {
              case ERROR_NO_MORE_FILES:
                dirp->status = -2;
                return NULL;
              default:
                errno = EIO;
                return NULL;
              }
          }
        break;
      default:
        errno = dirp->status;
        return NULL;
      }
  
    dirp->status = 0;
  
    if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
      type = DT_DIR;
    else if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
      type = DT_LNK;
    else if ((dirp->entry.dwFileAttributes
              & ~(FILE_ATTRIBUTE_READONLY
                  | FILE_ATTRIBUTE_HIDDEN
                  | FILE_ATTRIBUTE_SYSTEM
                  | FILE_ATTRIBUTE_ARCHIVE
                  | FILE_ATTRIBUTE_NORMAL
                  | FILE_ATTRIBUTE_TEMPORARY
                  | FILE_ATTRIBUTE_SPARSE_FILE
                  | FILE_ATTRIBUTE_COMPRESSED
                  | FILE_ATTRIBUTE_NOT_CONTENT_INDEXED
                  | FILE_ATTRIBUTE_ENCRYPTED)) == 0)
      /* Devices like COM1, LPT1, NUL would also have the attributes 0x20 but
         they cannot occur here.  */
      type = DT_REG;
    else
      type = DT_UNKNOWN;
  
    /* Reuse the memory of dirp->entry for the result.  */
    result =
      (struct dirent *)
      ((char *) dirp->entry.cFileName - offsetof (struct dirent, d_name[0]));
    result->d_type = type;
  
    return result;
  }
  

Download