[+] AURORA_BUILD_TIME

[+] AuGetBuildTime
[+] AuGetBuildTimeUnix

Include/auROXTL/auBuildTime.hpp

@@ -0,0 +1,122 @@
+/***
+    Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.
+
+    File: AuBuildTime.hpp
+    Date: 2023-2-22
+    Author: Reece
+    Credit: https://stackoverflow.com/a/44271643
+***/
+
+// extracts 1..4 characters from a string and interprets it as a decimal value
+#define __CONV_STR2DEC_1(str, i)  (str[i]>'0'?str[i]-'0':0)
+#define __CONV_STR2DEC_2(str, i)  (__CONV_STR2DEC_1(str, i)*10 + str[i+1]-'0')
+#define __CONV_STR2DEC_3(str, i)  (__CONV_STR2DEC_2(str, i)*10 + str[i+2]-'0')
+#define __CONV_STR2DEC_4(str, i)  (__CONV_STR2DEC_3(str, i)*10 + str[i+3]-'0')
+
+// Some definitions for calculation
+#define __SEC_PER_MIN             60UL
+#define __SEC_PER_HOUR            3600UL
+#define __SEC_PER_DAY             86400UL
+#define __SEC_PER_YEAR            (__SEC_PER_DAY*365)
+#define __UNIX_START_YEAR         1970UL
+
+// Custom "glue logic" to convert the month name to a usable number
+#define __GET_MONTH(str, i)      (str[i]=='J' && str[i+1]=='a' && str[i+2]=='n' ? 1 :     \
+                                  str[i]=='F' && str[i+1]=='e' && str[i+2]=='b' ? 2 :     \
+                                  str[i]=='M' && str[i+1]=='a' && str[i+2]=='r' ? 3 :     \
+                                  str[i]=='A' && str[i+1]=='p' && str[i+2]=='r' ? 4 :     \
+                                  str[i]=='M' && str[i+1]=='a' && str[i+2]=='y' ? 5 :     \
+                                  str[i]=='J' && str[i+1]=='u' && str[i+2]=='n' ? 6 :     \
+                                  str[i]=='J' && str[i+1]=='u' && str[i+2]=='l' ? 7 :     \
+                                  str[i]=='A' && str[i+1]=='u' && str[i+2]=='g' ? 8 :     \
+                                  str[i]=='S' && str[i+1]=='e' && str[i+2]=='p' ? 9 :     \
+                                  str[i]=='O' && str[i+1]=='c' && str[i+2]=='t' ? 10 :    \
+                                  str[i]=='N' && str[i+1]=='o' && str[i+2]=='v' ? 11 :    \
+                                  str[i]=='D' && str[i+1]=='e' && str[i+2]=='c' ? 12 : 0)
+
+#define __GET_MONTH2DAYS(month)  ((month == 1 ? 0 : 31 +                      \
+                                  (month == 2 ? 0 : 28 +                      \
+                                  (month == 3 ? 0 : 31 +                      \
+                                  (month == 4 ? 0 : 30 +                      \
+                                  (month == 5 ? 0 : 31 +                      \
+                                  (month == 6 ? 0 : 30 +                      \
+                                  (month == 7 ? 0 : 31 +                      \
+                                  (month == 8 ? 0 : 31 +                      \
+                                  (month == 9 ? 0 : 30 +                      \
+                                  (month == 10 ? 0 : 31 +                     \
+                                  (month == 11 ? 0 : 30))))))))))))
+
+#define __TIME_SECONDS__        __CONV_STR2DEC_2(__TIME__, 6)
+#define __TIME_MINUTES__        __CONV_STR2DEC_2(__TIME__, 3)
+#define __TIME_HOURS__          __CONV_STR2DEC_2(__TIME__, 0)
+#define __TIME_DAYS__           __CONV_STR2DEC_2(__DATE__, 4)
+#define __TIME_MONTH__          __GET_MONTH(__DATE__, 0)
+#define __TIME_YEARS__          __CONV_STR2DEC_4(__DATE__, 7)
+
+#define GET_LEAP_DAYS           ((__TIME_YEARS__-1968)/4 - (__TIME_MONTH__ <=2 ? 1 : 0))
+
+// Days in February
+#define _UNIX_TIMESTAMP_FDAY(year) \
+    (((year) % 400) == 0UL ? 29UL : \
+        (((year) % 100) == 0UL ? 28UL : \
+            (((year) % 4) == 0UL ? 29UL : \
+                28UL)))
+
+// Days in the year
+#define _UNIX_TIMESTAMP_YDAY(year, month, day) \
+    ( \
+        /* January */    day \
+        /* February */ + (month >=  2 ? 31UL : 0UL) \
+        /* March */    + (month >=  3 ? _UNIX_TIMESTAMP_FDAY(year) : 0UL) \
+        /* April */    + (month >=  4 ? 31UL : 0UL) \
+        /* May */      + (month >=  5 ? 30UL : 0UL) \
+        /* June */     + (month >=  6 ? 31UL : 0UL) \
+        /* July */     + (month >=  7 ? 30UL : 0UL) \
+        /* August */   + (month >=  8 ? 31UL : 0UL) \
+        /* September */+ (month >=  9 ? 31UL : 0UL) \
+        /* October */  + (month >= 10 ? 30UL : 0UL) \
+        /* November */ + (month >= 11 ? 31UL : 0UL) \
+        /* December */ + (month >= 12 ? 30UL : 0UL) \
+    )
+
+// get the UNIX timestamp from a digits representation
+#define _UNIX_TIMESTAMP(year, month, day, hour, minute, second) \
+    ( /* time */ second \
+                + minute *__SEC_PER_MIN \
+                + hour *__SEC_PER_HOUR \
+    + /* year day (month + day) */ (_UNIX_TIMESTAMP_YDAY(year, month, day) - 1) *__SEC_PER_DAY \
+    + /* year */ (year - 1970UL) *__SEC_PER_YEAR \
+                + ((year - 1969UL) / 4UL) *__SEC_PER_DAY \
+                - ((year - 1901UL) / 100UL) *__SEC_PER_DAY \
+                + ((year - 1601UL) / 400UL) *__SEC_PER_DAY \
+    )
+
+static constexpr AuUInt64 AuGetBuildTimeUnix()
+{
+    return _UNIX_TIMESTAMP(__TIME_YEARS__, __TIME_MONTH__, __TIME_DAYS__, __TIME_HOURS__, __TIME_MINUTES__, __TIME_SECONDS__);
+}
+
+static constexpr AuUInt64 AuGetBuildTime()
+{
+    return AuGetBuildTimeUnix() - 999'080'100ull;
+}
+
+#undef __TIME_SECONDS__
+#undef __TIME_MINUTES__
+#undef __TIME_HOURS__
+#undef __TIME_DAYS__
+#undef __TIME_MONTH__
+#undef __TIME_YEARS__
+#undef __GET_MONTH
+#undef __GET_MONTH2DAYS
+#undef __CONV_STR2DEC_1
+#undef __CONV_STR2DEC_2
+#undef __CONV_STR2DEC_3
+#undef __CONV_STR2DEC_4
+#undef __SEC_PER_MIN    
+#undef __SEC_PER_HOUR   
+#undef __SEC_PER_DAY    
+#undef __SEC_PER_YEAR   
+#undef __UNIX_START_YEAR
+
+#define AURORA_BUILD_TIME AuGetBuildTime()

Include/auROXTLUtils.hpp

@@ -53,6 +53,8 @@
 #include <auROXTL/Objects/SafeDestroy.hpp>
 #include <auROXTL/Objects/ResetMember.hpp>
 
+#include <auROXTL/auBuildTime.hpp>
+
 struct IAuNullDelegate
 {
     virtual void OnCall() = 0;