From e551301a64d62f121a01c4c2ac051a931c75d5e7 Mon Sep 17 00:00:00 2001
From: Niels Weber <niels.weber@digia.com>
Date: Wed, 15 May 2013 10:22:57 +0200
Subject: Implementation of time and date functions related to 7z.

Change-Id: Icb706d829f8470d8cc3cc50925c99255cf5f2b26
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
---
 src/libs/7zip/unix/CPP/myWindows/myDateAndTime.cpp | 95 +++++++++++++++++++---
 1 file changed, 85 insertions(+), 10 deletions(-)

(limited to 'src/libs/7zip/unix/CPP/myWindows')

diff --git a/src/libs/7zip/unix/CPP/myWindows/myDateAndTime.cpp b/src/libs/7zip/unix/CPP/myWindows/myDateAndTime.cpp
index 984954979..1773feb86 100644
--- a/src/libs/7zip/unix/CPP/myWindows/myDateAndTime.cpp
+++ b/src/libs/7zip/unix/CPP/myWindows/myDateAndTime.cpp
@@ -39,33 +39,108 @@
 **
 **************************************************************************/
 
-#include <time.h>
+#include <QDebug>
+#include <QDateTime>
 #include "windows.h"
 
+void FileTimeToDateTime(const FILETIME *source, QDateTime *target)
+{
+    ULARGE_INTEGER store;
+    QDateTime tempDateTime(QDate(1601, 1, 1));
+
+    store.QuadPart  = source->dwHighDateTime;
+    store.QuadPart  = store.QuadPart << 32;
+    store.QuadPart += source->dwLowDateTime;
+
+    *target = tempDateTime.addMSecs(store.QuadPart / 10000);
+}
+
+void DateTimeToSystemTime(const QDateTime *source, SYSTEMTIME *target)
+{
+    target->wYear = source->date().year();
+    target->wMonth = source->date().month();
+    target->wDayOfWeek = source->date().dayOfWeek();
+    target->wDay = source->date().day();
+    target->wHour = source->time().hour();
+    target->wMinute = source->time().minute();
+    target->wSecond = source->time().second();
+    target->wMilliseconds = source->time().msec();
+}
+
+
 BOOL WINAPI FileTimeToSystemTime(CONST FILETIME *source,SYSTEMTIME *target)
 {
-    // TODO: Implementation!
+    QDateTime tempDateTime;
+    FileTimeToDateTime(source, &tempDateTime);
+    DateTimeToSystemTime(&tempDateTime, target);
+
     return TRUE;
 }
 
-BOOLEAN WINAPI RtlTimeToSecondsSince1970(const LARGE_INTEGER *Time, DWORD *Seconds)
+BOOL WINAPI SystemTimeToFileTime(const SYSTEMTIME *source,FILETIME *target)
 {
     // TODO: Implementation!
+    // This doesn't seem to be called at all
+
+    qDebug() << "SystemTimeToFileTime";
+
+    target->dwHighDateTime = 0;
+    target->dwLowDateTime = 0;
+
+    qWarning() << Q_FUNC_INFO;
+
     return TRUE;
 }
 
-void WINAPI RtlSecondsSince1970ToFileTime(DWORD Seconds, FILETIME *ft)
+BOOL WINAPI FileTimeToLocalFileTime(CONST FILETIME *source,FILETIME *target)
 {
-    // TODO: Implementation!
+    target->dwHighDateTime = source->dwHighDateTime;
+    target->dwLowDateTime  = source->dwLowDateTime;
+
+    QDateTime tempDateTime;
+    FileTimeToDateTime(source, &tempDateTime);
+
+    tempDateTime = tempDateTime.toLocalTime();
+
+    return TRUE;
 }
 
-VOID WINAPI GetSystemTime(SYSTEMTIME *st)
+BOOLEAN WINAPI RtlTimeToSecondsSince1970(const LARGE_INTEGER *Time, DWORD *Seconds)
 {
-    // TODO: Implementation!
+    SYSTEMTIME tempSystemTime;
+    FILETIME fileTime;
+
+    fileTime.dwLowDateTime = Time->QuadPart;
+    fileTime.dwHighDateTime = Time->QuadPart >> 32;
+
+    FileTimeToSystemTime(&fileTime, &tempSystemTime);
+
+    QDate targetDate(tempSystemTime.wYear, tempSystemTime.wMonth, tempSystemTime.wDay);
+    QTime targetTime(tempSystemTime.wHour, tempSystemTime.wMinute, tempSystemTime.wSecond, tempSystemTime.wMilliseconds);
+    QDateTime targetDateTime(targetDate, targetTime, Qt::UTC);
+
+    quint64 secsSince1970 = targetDateTime.toMSecsSinceEpoch() / 1000;
+
+    *Seconds = secsSince1970;
+
+    return TRUE;
 }
 
-BOOL WINAPI SystemTimeToFileTime(const SYSTEMTIME *source,FILETIME *target)
+void WINAPI RtlSecondsSince1970ToFileTime(DWORD Seconds, FILETIME *ft)
 {
-    // TODO: Implementation!
-    return TRUE;
+    QDateTime fileTimeStartDate(QDate(1601, 1, 1));
+    quint64 hnseconds = Seconds;
+    QDateTime sourceDateTime = QDateTime::fromMSecsSinceEpoch(hnseconds * 1000);
+
+    hnseconds = fileTimeStartDate.msecsTo(sourceDateTime);
+    hnseconds *= 10000;
+
+    ft->dwLowDateTime = hnseconds;
+    ft->dwHighDateTime = hnseconds >> 32;
+}
+
+VOID WINAPI GetSystemTime(SYSTEMTIME *st)
+{
+    QDateTime nowDateTime = QDateTime::currentDateTimeUtc();
+    DateTimeToSystemTime(&nowDateTime, st);
 }
-- 
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