From 38a94040a2409a0856cee918075cf555f8c7b885 Mon Sep 17 00:00:00 2001
From: Lucas <Coquinho@users.noreply.github.com>
Date: Tue, 28 Jul 2020 09:15:59 -0300
Subject: evil: Implement evil_localtime_r using localtime

Implements `evil_localtime_r` using win32 [localtime
function](https://docs.microsoft.com/pt-br/cpp/c-runtime-library/reference/localtime-localtime32-localtime64?view=vs-2019).
If `HAVE_lOCALTIME_R` is not defined, define `localtime_r`
as `evil_localtime_r`

Co-authored-by: Felipe Magno de Almeida <felipe@expertise.dev>
---
 header_checks/meson.build |  1 +
 src/lib/evil/evil_time.c  | 22 +++++++++++++++++++++-
 src/lib/evil/evil_time.h  |  6 ++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/header_checks/meson.build b/header_checks/meson.build
index c71fdbf216..a2a0e097eb 100644
--- a/header_checks/meson.build
+++ b/header_checks/meson.build
@@ -88,6 +88,7 @@ function_checks = [
   ['getxattr', ['sys/types.h', 'sys/xattr.h']],
   ['iconv', ['iconv.h']],
   ['listxattr', ['sys/types.h', 'sys/xattr.h']],
+  ['localtime_r', ['time.h']],
   ['malloc_info', ['malloc.h']],
   ['malloc_usable_size', ['malloc.h']],
   ['mkdirat', ['sys/stat.h']],
diff --git a/src/lib/evil/evil_time.c b/src/lib/evil/evil_time.c
index 2262fc1a7b..868d8c0aae 100644
--- a/src/lib/evil/evil_time.c
+++ b/src/lib/evil/evil_time.c
@@ -61,6 +61,19 @@ int evil_gettimeofday(struct timeval *tv, struct timezone *tz)
    return res;
 }
 
+EVIL_API struct tm *
+evil_localtime_r(const time_t * time, struct tm * result)
+{
+   struct tm* _result = localtime(time);
+
+   if (_result)
+     {
+        *result = *_result;
+        return result;
+     }
+   return NULL;
+}
+
 /*
  * strptime
  * based on http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/time/strptime.c?rev=HEAD
@@ -468,8 +481,15 @@ strptime(const char *buf, const char *fmt, struct tm *tm)
               }
               else
                 {
+                   TIME_ZONE_INFORMATION zone_info;
+                   GetTimeZoneInformation(&zone_info);
+                   const char timezone_table[3] = {
+                       zone_info.StandardName,
+                       zone_info.DaylightName,
+                       NULL,
+                   };
                    ep = find_string(bp, &i,
-                                    (const char * const *)tzname,
+                                    (const char * const *)timezone_table,
                                     NULL, 2);
                    if (ep != NULL)
                      {
diff --git a/src/lib/evil/evil_time.h b/src/lib/evil/evil_time.h
index 591900df4f..16fdfc0059 100644
--- a/src/lib/evil/evil_time.h
+++ b/src/lib/evil/evil_time.h
@@ -43,6 +43,12 @@ EVIL_API int evil_gettimeofday(struct timeval *tv, struct timezone *tz);
 # define HAVE_GETTIMEOFDAY 1
 #endif
 
+EVIL_API struct tm *evil_localtime_r(const time_t * time, struct tm * result);
+
+#ifndef HAVE_LOCALTIME_R
+# define HAVE_LOCALTIME_R
+# define localtime_r evil_localtime_r
+#endif
 
 /**
  * @brief Convert a string representation of time to a time tm structure .
-- 
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