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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file
File related timestamps (timestamp comparison, converstion to text.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif
#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif
#ifndef DK4TIMEC_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4timec.h"
#else
#include <dktools-4/dk4timec.h>
#endif
#endif
#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define WINDOWS_H_INCLUDED 1
#endif
#else
#if DK4_HAVE_SYS_TYPES_H
#ifndef SYS_TYPES_H_INCLUDED
#include <sys/types.h>
#define SYS_TYPES_H_INCLUDED 1
#endif
#endif
#if DK4_TIME_WITH_SYS_TIME
#ifndef SYS_TIME_H_INCLUDED
#include <sys/time.h>
#define SYS_TIME_H_INCLUDED 1
#endif
#ifndef TIME_H_INCLUDED
#include <time.h>
#define TIME_H_INCLUDED 1
#endif
#else
#if DK4_HAVE_TIME_H
#ifndef TIME_H_INCLUDED
#include <time.h>
#define TIME_H_INCLUDED 1
#endif
#else
#if DK4_HAVE_SYS_TIME_H
#ifndef SYS_TIME_H_INCLUDED
#include <sys/time.h>
#define SYS_TIME_H_INCLUDED 1
#endif
#endif
#endif
#endif
#ifndef DK4TIME_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4time.h"
#else
#include <dktools-4/dk4time.h>
#endif
#endif
#endif
#if DK4_ON_WINDOWS
/** File related timestamp.
*/
typedef FILETIME dk4_file_time_t;
#else
/** File related timestamp.
*/
typedef dk4_time_t dk4_file_time_t;
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Compare two timestamps.
CRT on Windows: Not used.
@param l Left timestamp.
@param r Right timestamp.
@return 1 if l>r, 0 if l=r, -1 if l<r.
*/
int
dk4filetime_compare(const dk4_file_time_t *l, const dk4_file_time_t *r);
/** Convert timestamp to text ``yyyy-mm-dd hh:mm:ss''.
CRT on Windows: Optional.
@param dptr Result buffer address.
@param dsz Result buffer size (number of dkChar).
@param fit Timestamp to convert.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if dptr or fit is NULL or dsz is 0,
- DK4_E_MATH_OVERFLOW<br>
if a mathematical overflow occures in a size calculation,
- DK4_E_BUFFER_TOO_SMALL<br>
if the buffer is too small,
- DK4_E_BUG<br>
if CRT or Windows API functions failed to convert the timestamp to
local time information.
*/
int
dk4filetime_to_text_c8(
char *dptr,
size_t dsz,
const dk4_file_time_t *fit,
dk4_er_t *erp
);
/** Convert timestamp to text ``yyyy-mm-dd hh:mm:ss''.
CRT on Windows: Optional.
@param dptr Result buffer address.
@param dsz Result buffer size (number of dkChar).
@param fit Timestamp to convert.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if dptr or fit is NULL or dsz is 0,
- DK4_E_MATH_OVERFLOW<br>
if a mathematical overflow occures in a size calculation,
- DK4_E_BUFFER_TOO_SMALL<br>
if the buffer is too small,
- DK4_E_BUG<br>
if CRT or Windows API functions failed to convert the timestamp to
local time information.
*/
int
dk4filetime_to_text_wc(
wchar_t *dptr,
size_t dsz,
const dk4_file_time_t *fit,
dk4_er_t *erp
);
/** Convert timestamp to text ``yyyy-mm-dd hh:mm:ss''.
CRT on Windows: Optional.
@param dptr Result buffer address.
@param dsz Result buffer size (number of dkChar).
@param fit Timestamp to convert.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if dptr or fit is NULL or dsz is 0,
- DK4_E_MATH_OVERFLOW<br>
if a mathematical overflow occures in a size calculation,
- DK4_E_BUFFER_TOO_SMALL<br>
if the buffer is too small,
- DK4_E_BUG<br>
if CRT or Windows API functions failed to convert the timestamp to
local time information.
*/
int
dk4filetime_to_text(
dkChar *dptr,
size_t dsz,
const dk4_file_time_t *fit,
dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4conf.h"
#include "dk4ftime.h"
#if !DK4_ON_WINDOWS
#include "dk4timedk.h"
#endif
int
dk4filetime_compare(const dk4_file_time_t *l, const dk4_file_time_t *r)
{
int back = 0;
if (NULL != l) {
if (NULL != r) {
#if DK4_ON_WINDOWS
if (l->dwHighDateTime > r->dwHighDateTime) {
back = 1;
} else {
if (l->dwHighDateTime < r->dwHighDateTime) {
back = -1;
} else {
if (l->dwLowDateTime > r->dwLowDateTime) {
back = 1;
} else {
if (l->dwLowDateTime < r->dwLowDateTime) {
back = -1;
}
}
}
}
#else
if (*l > *r) {
back = 1;
} else {
if (*l < *r) {
back = -1;
}
}
#endif
} else {
back = 1;
}
} else {
if (NULL != r) {
back = -1;
}
}
return back;
}
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