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%%	options

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

%%	header

/**	@file
	File statistics (retrieve information from
	stat() and lstat() results).

	Note: The stat() and lstat() functions are sufficient for
	non-Windows systems.
	On Windows systems the st_dev and st_ino components may contain
	dummy contents, the stat structure does not contain information
	about symbolic links.

	For a portable (both Windows and non-Windows) check whether a file
	is a symbolic link, reparse point... use the dk4_file_info_t
	data type from dk4fileit.h and the functions from dk4filei.h.

	CRT on Windows: Required.
*/

#include "dk4statt.h"

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

#ifdef __cplusplus
extern "C" {
#endif

/**	Check whether the file information is about a regular file.
	@param	stb	Stat buffer filled previously.
	@param	erp	Error report, may be NULL.
	@return	1 for regular file, 0 otherwise.

*/
int
dk4stat_is_regular(const dk4_stat_t *stb, dk4_er_t *erp);

/**	Check whether the file information is about a directory.
	@param	stb	Stat buffer filled previously.
	@param	erp	Error report, may be NULL.
	@return	1 for regular file, 0 otherwise.

*/
int
dk4stat_is_directory(const dk4_stat_t *stb, dk4_er_t *erp);

/**	Check whether the file information is about a symbolic link.
	@param	stb	Stat buffer filled previously.
	@param	erp	Error report, may be NULL.
	@return	1 for regular file, 0 otherwise.

*/
int
dk4stat_is_symlink(const dk4_stat_t *stb, dk4_er_t *erp);

/**	Check whether the file information is about UNIX domain socket.
	@param	stb	Stat buffer filled previously.
	@param	erp	Error report, may be NULL.
	@return	1 for regular file, 0 otherwise.

*/
int
dk4stat_is_unix_domain_socket(const dk4_stat_t *stb, dk4_er_t *erp);

#ifdef __cplusplus
}
#endif


%%	module

#include "dk4stat.h"
#if DK4_CHAR_SIZE > 1
#include "dk4statw.h"
#else
#include "dk4stat8.h"
#endif

$!trace-include



int
dk4stat_is_regular(const dk4_stat_t *stb, dk4_er_t *erp)
{
  int		back	=	0;
  if (NULL != stb) {
#if DK4_ON_WINDOWS
    if (((stb->st_mode) & _S_IFMT) == _S_IFREG) {
      back = 1;
    }
#else
    if (((stb->st_mode) & S_IFMT) == S_IFREG) {
      back = 1;
    }
#endif
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



int
dk4stat_is_directory(const dk4_stat_t *stb, dk4_er_t *erp)
{
  int		back	=	0;
  if (NULL != stb) {
#if DK4_ON_WINDOWS
    if (((stb->st_mode) & _S_IFMT) == _S_IFDIR) {
      back = 1;
    }
#else
    if (((stb->st_mode) & S_IFMT) == S_IFDIR) {
      back = 1;
    }
#endif
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}


int
dk4stat_is_symlink(const dk4_stat_t *stb, dk4_er_t *erp)
{
  int		back	=	0;
  if (NULL != stb) {
#if DK4_ON_WINDOWS

#else
#if defined(S_IFMT) && defined(S_IFLNK)
    if (S_IFLNK == ((stb->st_mode) & S_IFMT)) {
      back = 1;
    }
#endif
#endif
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



int
dk4stat_is_unix_domain_socket(const dk4_stat_t *stb, dk4_er_t *erp)
{
  int		 back	= 0;
  if (NULL != stb) {
#if DK4_ON_WINDOWS

#else
#if defined(S_IFMT) && defined(S_IFSOCK)
    if (S_IFSOCK == ((stb->st_mode) & S_IFMT)) {
      back = 1;
    }
#endif
#endif
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}