Create a branch for header work.

svn path=/branches/header-work/; revision=45691
2025-08-05 20:33:04 +00:00 · 2010-02-26 22:57:55 +00:00 · 2010-02-26 22:57:55 +00:00 · 9ea495ba33
commit 9ea495ba33
parent 14fe274b1c
19538 changed files with 0 additions and 1063950 deletions
--- a/lib/sdk/crt/time/mktime.c
+++ b/lib/sdk/crt/time/mktime.c
@ -0,0 +1,151 @@
+/*
+ * COPYRIGHT:   LGPL, See LGPL.txt in the top level directory
+ * PROJECT:     ReactOS CRT library
+ * FILE:        lib/sdk/crt/time/mktime.c
+ * PURPOSE:     Implementation of mktime, _mkgmtime
+ * PROGRAMERS:  Timo Kreuzer
+ */
+#include <precomp.h>
+#include "bitsfixup.h"
+
+#define MAX_32BIT_TIME 0xFFFFFFFFULL
+
+static int g_monthdays[13] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365};
+
+__time64_t
+mktime_worker(struct tm * ptm, int utc)
+{
+    struct tm *ptm2;
+    __time64_t time;
+    int mons, years, leapyears;
+    TIME_ZONE_INFORMATION tzi;
+    DWORD ret;
+
+    /* Normalize year and month */
+    if (ptm->tm_mon < 0)
+    {
+        mons = -ptm->tm_mon - 1;
+        ptm->tm_year -= 1 + mons / 12;
+        ptm->tm_mon = 11 - (mons % 12);
+    }
+    else if (ptm->tm_mon > 11)
+    {
+        mons = ptm->tm_mon;
+        ptm->tm_year += (mons / 12);
+        ptm->tm_mon = mons % 12;
+    }
+
+    /* Is it inside margins */
+    if (ptm->tm_year < 70 || ptm->tm_year > 139) // FIXME: max year for 64 bits
+    {
+        return -1;
+    }
+
+    years = ptm->tm_year - 70;
+
+    /* Number of leapyears passed since 1970 */
+    leapyears = (years + 1) / 4;
+
+    /* Calculate days up to 1st of Jan */
+    time = years * 365 + leapyears;
+
+    /* Calculate days up to 1st of month */
+    time += g_monthdays[ptm->tm_mon];
+
+    /* Check if we need to add a leap day */
+    if (((years + 2) % 4) == 0)
+    {
+        if (ptm->tm_mon > 2)
+        {
+            time++;
+        }
+    }
+
+    time += ptm->tm_mday - 1;
+
+    time *= 24;
+    time += ptm->tm_hour;
+
+    time *= 60;
+    time += ptm->tm_min;
+
+    time *= 60;
+    time += ptm->tm_sec;
+
+    if (time < 0)
+    {
+        return -1;
+    }
+
+    /* Finally get normalized tm struct */
+    ptm2 = _gmtime64(&time);
+    if (!ptm2)
+    {
+        return -1;
+    }
+    *ptm = *ptm2;
+
+    /* Finally adjust by the difference to GMT in seconds */
+    ret = GetTimeZoneInformation(&tzi);
+    if (ret != TIME_ZONE_ID_INVALID)
+    {
+        time += tzi.Bias * 60;
+    }
+
+    return time;
+}
+
+/*    int tm_sec;
+    int tm_min;
+    int tm_hour;
+    int tm_mday;
+    int tm_mon;
+    int tm_year;
+    int tm_wday;
+    int tm_yday;
+    int tm_isdst;
+*/
+
+/** 
+ * \name _mkgmtime
+ * 
+ */
+time_t
+_mkgmtime(struct tm *ptm)
+{
+    time_t time = mktime_worker(ptm, 1);
+    return (time > MAX_32BIT_TIME) ? -1 : time;
+}
+
+time_t
+mktime(struct tm *ptm)
+{
+    time_t time = mktime_worker(ptm, 0);
+    return (time > MAX_32BIT_TIME) ? -1 : time;
+}
+
+__time32_t
+_mkgmtime32(struct tm *ptm)
+{
+    time_t time = mktime_worker(ptm, 1);
+    return (time > MAX_32BIT_TIME) ? -1 : time;
+}
+
+__time32_t
+_mktime32(struct tm *ptm)
+{
+    time_t time = mktime_worker(ptm, 0);
+    return (time > MAX_32BIT_TIME) ? -1 : time;
+}
+
+__time64_t
+_mkgmtime64(struct tm *ptm)
+{
+    return mktime_worker(ptm, 1);
+}
+
+__time64_t
+_mktime64(struct tm *ptm)
+{
+    return mktime_worker(ptm, 0);
+}