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%%	options

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



%%	header

/**	@file	dk4fileia.h	File information with application support.
*/

#include "dk4fileit.h"
#include "dk4app.h"

#ifdef __cplusplus
extern "C" {
#endif

/**	Retrieve full information for a path name.
	For symbolic links attempt to retrieve information both
	about the link and about the link target.
	@param	dptr	Pointer to result structure.
	@param	fn	File path name.
	@param	app	Application structure for diagnostics, may be NULL.
	@return	1 if information is found, 0 otherwise.
	If information about the link is found and no information about
	the target, the function returns 1 as we can recognize the
	directory item as a dangling link (link with non-existing target).
*/
int
dk4fileinfo_app(dk4_file_info_t *dptr, const dkChar *fn, dk4_app_t *app);

/**	Report errors from the stat() function.
	@param	app	Application structure.
	@param	path	Path name for which stat failed.
	@param	errc	Error code from errno variable.
*/
void
dk4fileinfo_report_stat_failed(dk4_app_t *app, const dkChar *path, int errc);

#if DK4_ON_WINDOWS
/**	Report errors from Windows functions.
	@param	app	Application structure.
	@param	path	Path name for which the functions failed.
	@param	errc	Error code from GetLastError().
*/
void
dk4fileinfo_report_win_failed(dk4_app_t *app, const dkChar *path, long errc);
#endif

#ifdef __cplusplus
}
#endif


%%	module

#include "dk4conf.h"
#include "dk4const.h"

#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define WINDOWS_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#include "dk4filei.h"
#include "dk4fileia.h"
#include "dk4error.h"
#include "dk4mem.h"

#if DK4_ON_WINDOWS
#include "dk4maodd.h"
#include "dk4maodh.h"
#endif



$!trace-include



#if DK4_ON_WINDOWS
void
dk4fileinfo_report_win_failed(dk4_app_t *app, const dkChar *path, long errc)
{
  dkChar	eb1[8 * sizeof(DWORD) + 16];
  dkChar	eb2[8 * sizeof(DWORD) + 16];
  int		res   = 0;
  int		found = 0;

  if (ERROR_FILE_NOT_FOUND == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 51, path);
    found = 1;
    goto finished;
  }
  if (ERROR_PATH_NOT_FOUND == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 51, path);
    found = 1;
    goto finished;
  }
  if (ERROR_ACCESS_DENIED == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 55, path);
    found = 1;
    goto finished;
  }
  if (ERROR_BAD_NET_NAME == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 74, path);
    found = 1;
    goto finished;
  }
  if (ERROR_BAD_NETPATH == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 75, path);
    found = 1;
    goto finished;
  }
  if (ERROR_SHARING_VIOLATION == errc) {
    dk4app_log_base3(app, DK4_LL_ERROR, 149, 151, path);
    found = 1;
    goto finished;
  }
  if (0 == found) {
    res = dk4ma_write_decimal_unsigned(
      eb1, DK4_SIZEOF(eb1,dkChar), (dk4_um_t)(errc), 0, NULL
    );
    if (0 != res) {
      res = dk4ma_write_hex_unsigned(
        eb2, DK4_SIZEOF(eb2,dkChar), (dk4_um_t)(errc),
	0, NULL
      );
    }
    if (0 != res) {
      dk4app_log_base7(app,DK4_LL_ERROR,149,69,70,71,path,eb1,eb2);
    } else {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 40, path);
    }
  }
  finished: ;
}
#endif



void
dk4fileinfo_report_stat_failed(dk4_app_t *app, const dkChar *path, int errc)
{
  $? "+ dk4fileinfo_report_stat_failed \"%!ds\"", path
  switch (errc) {
#ifdef EACCES
    case EACCES : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 138, path);
    } break;
#endif
#ifdef EFAULT
    case EFAULT : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 123, path);
    } break;
#endif
#ifdef ELOOP
    case ELOOP : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 61, path);
    } break;
#endif
#ifdef ENAMETOOLONG
    case ENAMETOOLONG : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 42, path);
    } break;
#endif
#ifdef ENOENT
    case ENOENT : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 51, path);
    } break;
#endif
#ifdef ENOMEM
    case ENOMEM : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 142, path);
    } break;
#endif
#ifdef ENOTDIR
    case ENOTDIR : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 150, path);
    } break;
#endif
#ifdef EOVERFLOW
    case EOVERFLOW : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 117, path);
    } break;
#endif
#ifdef EIO
    case EIO : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 126, path);
    } break;
#endif
    default : {
      dk4app_log_base3(app, DK4_LL_ERROR, 149, 101, path);
    } break;
  }
  $? "- dk4fileinfo_report_stat_failed"
}



int
dk4fileinfo_app(dk4_file_info_t *dptr, const dkChar *fn, dk4_app_t *app)
{
  dk4_er_t	 er;
  int		 back	= 0;
  if ((NULL != dptr) && (NULL != fn)) {
    dk4error_init(&er);
    back = dk4fileinfo(dptr, fn, &er);
    if (0 == back) {
      switch (er.ec) {
#if DK4_ON_WINDOWS
	case DK4_E_CREATE_FILE_FAILED :
	case DK4_E_FILE_INFORMATION_FAILED :
	case DK4_E_FINDFIRSTFILE_FAILED :
	case DK4_E_SYSTEM : {
	  dk4fileinfo_report_win_failed(app, fn, er.dt.lDetails1);
	} break;
#else
	case DK4_E_SYSTEM : {
	  dk4fileinfo_report_stat_failed(app, fn, er.dt.iDetails1);
	} break;
#endif
      }
    }
  }
  return back;
}