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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2015-xxxx
license		=	bsd



%%	module

#include "dk4filei.h"

#ifndef DK4MEM_H_INCLUDED
#include "dk4mem.h"
#endif

#ifndef DK4STAT8_H_INCLUDED
#include "dk4stat8.h"
#endif

#ifndef DK4ERROR_H_INCLUDED
#include "dk4error.h"
#endif


int
dk4fileinfo_c8(dk4_file_info_t *dptr, const char *fn, dk4_er_t *erp)
{
  dk4_er_t	 	er;
#if DK4_ON_WINDOWS
  WIN32_FIND_DATAA	ffdata;
  HANDLE	 	ha;
  DWORD			dwatt;
  int		 	i;
  int		 	found;
  int			isdir;
#endif
  int		 	back = 0;
  if ((NULL != dptr) && (NULL != fn)) {
    dk4error_init(&er);
    DK4_MEMRES(dptr, sizeof(dk4_file_info_t));
    dptr->contents = 0;
#if DK4_ON_WINDOWS
    dptr->rppnt = (DWORD)0UL;
    dptr->fattr = GetFileAttributesA(fn);
    dptr->resio = 0UL;
    if (INVALID_FILE_ATTRIBUTES == dptr->fattr) {
      ha = FindFirstFileA(fn, &ffdata);
      if (INVALID_HANDLE_VALUE != ha) {
        dptr->fattr = ffdata.dwFileAttributes;
        FindClose(ha);
      }
    }
    if (INVALID_FILE_ATTRIBUTES != dptr->fattr) {
      isdir = 0;
      if (0 != (FILE_ATTRIBUTE_DIRECTORY & (dptr->fattr))) { isdir = 1; }
      /* Symlink */
      found = 0;
      for (i = 0; ((3 > i) && (0 == found)); i++) {
        dwatt =  dptr->fattr;
	dwatt |= FILE_FLAG_OPEN_REPARSE_POINT;
	if (0 != isdir) { dwatt |= FILE_FLAG_BACKUP_SEMANTICS; }
        ha = CreateFileA(
          fn,
	  (
	    (0 == i)
	    ? (0) : ((1 == i) ? (FILE_READ_ATTRIBUTES) : (GENERIC_READ))
	  ),
	  (FILE_SHARE_READ | FILE_SHARE_WRITE),
	  NULL,
	  OPEN_EXISTING,
	  dwatt,
	  NULL
        );
        if (INVALID_HANDLE_VALUE != ha) {
          if (GetFileInformationByHandle(ha, &(dptr->linfo))) {
	    found = 1;
	    back = 1;
            dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
	  } else {
	    if (1 == i) {
	      dk4error_set_ldetails(
	        &er, DK4_E_FILE_INFORMATION_FAILED,
	        (long)((unsigned long)GetLastError())
	      );
	    }
	  }
	  CloseHandle(ha);
        } else {
          if (1 == i) {
	    dk4error_set_ldetails(
	      &er, DK4_E_CREATE_FILE_FAILED,
	      (long)((unsigned long)GetLastError())
	    );
	  }
        }
      }
      /* Target */
      found = 0;
      for (i = 0; ((3 > i) && (0 == found)); i++) {
        dwatt =  dptr->fattr;
	if (0 != isdir) { dwatt |= FILE_FLAG_BACKUP_SEMANTICS; }
        ha = CreateFileA(
          fn,
	  (
	    (0 == i)
	    ? (0)
	    : ((1 == i) ? (FILE_READ_ATTRIBUTES) : (GENERIC_READ))
	  ),
	  (FILE_SHARE_READ | FILE_SHARE_WRITE),
	  NULL,
	  OPEN_EXISTING,
	  dwatt,
	  NULL
        );
        if (INVALID_HANDLE_VALUE != ha) {
          if (GetFileInformationByHandle(ha, &(dptr->tinfo))) {
	    found = 1;
	    back = 1;
            dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
	  } else {
	    if (1 == i) {
	      dk4error_set_ldetails(
	        &er, DK4_E_FILE_INFORMATION_FAILED,
	        (long)((unsigned long)GetLastError())
	      );
	    }
	  }
	  CloseHandle(ha);
        } else {
          if (1 == i) {
	    dk4error_set_ldetails(
	      &er, DK4_E_CREATE_FILE_FAILED,
	      (long)((unsigned long)GetLastError())
	    );
	  }
        }
      }
      /* FindFirstFile */
      if (0 != back) {
        ha = FindFirstFileA(fn, &ffdata);
        if (INVALID_HANDLE_VALUE != ha) {
          back = 1;
	  dptr->fattr = ffdata.dwFileAttributes;
	  dptr->rppnt = ffdata.dwReserved0;
          FindClose(ha);
        }
      } else {
        ha = FindFirstFileA(fn, &ffdata);
	if (INVALID_HANDLE_VALUE != ha) {
	  back = 1;
	  dptr->fattr = ffdata.dwFileAttributes;
	  dptr->rppnt = ffdata.dwReserved0;
	  dptr->resio = 1UL;
	  (dptr->linfo).dwFileAttributes = ffdata.dwFileAttributes;
	  (dptr->linfo).ftCreationTime = ffdata.ftCreationTime;
	  (dptr->linfo).ftLastAccessTime = ffdata.ftLastAccessTime;
	  (dptr->linfo).ftLastWriteTime = ffdata.ftLastWriteTime;
	  (dptr->linfo).nFileSizeHigh = ffdata.nFileSizeHigh;
	  (dptr->linfo).nFileSizeLow = ffdata.nFileSizeLow;
	  (dptr->tinfo).dwFileAttributes = ffdata.dwFileAttributes;
	  (dptr->tinfo).ftCreationTime = ffdata.ftCreationTime;
	  (dptr->tinfo).ftLastAccessTime = ffdata.ftLastAccessTime;
	  (dptr->tinfo).ftLastWriteTime = ffdata.ftLastWriteTime;
	  (dptr->tinfo).nFileSizeHigh = ffdata.nFileSizeHigh;
	  (dptr->tinfo).nFileSizeLow = ffdata.nFileSizeLow;
          dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
	  dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
	  FindClose(ha);
	}
      }
    } else {
      dk4error_set_ldetails(
        &er, DK4_E_SYSTEM,
	(long)((unsigned long)GetLastError())
      );
    }
#else
    if (0 != dk4stat_l_c8(&(dptr->lstb), fn, &er)) {
      back = 1;
      dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
    }
    if (0 != dk4stat_c8(&(dptr->tstb), fn, &er)) {
      back = 1;
      dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
    }
#endif
    if (0 == back) {
      dk4error_copy(erp, &er);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return  back;
}