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time_util.cpp

@@ -1,9 +1,22 @@
 #include "time_util.h"
+#include "utils_config.h"
 
 #if _WIN32
 #include <Windows.h>
 #endif
 
+#include <stdio.h>
+
+#ifndef HAVE_STRPTIME
+#include "strptime/strptime.h"
+#endif
+
+#if HAVE_PRINTF_S
+#define printf printf_s
+#endif
+
+#include "err.h"
+
 #if _WIN32
 void time_util::time_t_to_file_time(time_t t, LPFILETIME pft) {
     ULARGE_INTEGER time_value;
@@ -12,3 +25,41 @@ void time_util::time_t_to_file_time(time_t t, LPFILETIME pft) {
     pft->dwHighDateTime = time_value.HighPart;
 }
 #endif
+
+char* time_util::strptime(const char* s, const char* format, struct tm* tm) {
+    return ::strptime(s, format, tm);
+}
+
+long time_util::get_timezone() {
+#if HAVE__GET_TIMEZONE
+    long t = 0;
+    int err = _get_timezone(&t);
+    if (!err) {
+        std::string msg ;
+        if (!err::get_errno_message(msg, err)) {
+            msg = "Unknown error";
+        }
+        printf("get_timezone failed: %s\n", msg.c_str());
+        return 0;
+    } else {
+        return t;
+    }
+#elif HAVE_TIMEZONE && HAVE_TZSET
+    tzset();
+    return timezone;
+#else
+    printf("get_timezone failed: not implemented\n");
+    return 0;
+#endif
+}
+
+time_t time_util::timegm(struct tm* tm) {
+#if HAVE__MKGMTIME
+    return _mkgmtime(tm);
+#elif HAVE_TIMEGM
+    return ::timegm(tm);
+#else
+    time_t now = ::mktime(tm);
+    return now + get_timezone();
+#endif
+}