From bfe02fc747611b6f7bb70ae1f2bbba175eb7382d Mon Sep 17 00:00:00 2001
From: Andrew Eikum <aeikum@codeweavers.com>
Date: Fri, 27 Sep 2019 09:28:26 -0500
Subject: [PATCH] msvcrt: Implement %T format for strftime.

Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/msvcrt/tests/time.c   |  5 +++++
 dlls/msvcrt/time.c         | 12 ++++++++++++
 dlls/ucrtbase/tests/misc.c | 18 ++++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/dlls/msvcrt/tests/time.c b/dlls/msvcrt/tests/time.c
index 2b1c781b059..fea7ca19db4 100644
--- a/dlls/msvcrt/tests/time.c
+++ b/dlls/msvcrt/tests/time.c
@@ -608,6 +608,11 @@ static void test_strftime(void)
     gmt_tm = p_gmtime(&gmt);
     ok(gmt_tm != NULL, "gmtime failed\n");
 
+    errno = 0xdeadbeef;
+    retA = p_strftime(bufA, 256, "%T", gmt_tm);
+    ok(retA == 0, "expected 0, got %ld\n", retA);
+    ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);
+
     errno = 0xdeadbeef;
     retA = p_strftime(NULL, 0, "copy", gmt_tm);
     ok(retA == 0, "expected 0, got %ld\n", retA);
diff --git a/dlls/msvcrt/time.c b/dlls/msvcrt/time.c
index e6493b09aff..b7d11e0543a 100644
--- a/dlls/msvcrt/time.c
+++ b/dlls/msvcrt/time.c
@@ -1193,6 +1193,18 @@ static MSVCRT_size_t strftime_helper(char *str, MSVCRT_size_t max, const char *f
             if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, 59))
                 return 0;
             break;
+#if _MSVCR_VER>=140
+        case 'T':
+            if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
+                return 0;
+            str[ret++] = ':';
+            if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
+                return 0;
+            str[ret++] = ':';
+            if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, 59))
+                return 0;
+            break;
+#endif
         case 'w':
             if(!strftime_int(str, &ret, max, mstm->tm_wday, 0, 0, 6))
                 return 0;
diff --git a/dlls/ucrtbase/tests/misc.c b/dlls/ucrtbase/tests/misc.c
index 4da6abff73e..bb0c2e3a0a2 100644
--- a/dlls/ucrtbase/tests/misc.c
+++ b/dlls/ucrtbase/tests/misc.c
@@ -136,6 +136,7 @@ static int (CDECL *p_fesetround)(int);
 static void (CDECL *p___setusermatherr)(MSVCRT_matherr_func);
 static int* (CDECL *p_errno)(void);
 static char* (CDECL *p_asctime)(const struct tm *);
+static size_t (__cdecl *p_strftime)(char *, size_t, const char *, const struct tm *);
 static void (CDECL *p_exit)(int);
 static int (CDECL *p__crt_atexit)(void (CDECL*)(void));
 static int (__cdecl *p_crt_at_quick_exit)(void (__cdecl *func)(void));
@@ -499,6 +500,7 @@ static BOOL init(void)
     p___setusermatherr = (void*)GetProcAddress(module, "__setusermatherr");
     p_errno = (void*)GetProcAddress(module, "_errno");
     p_asctime = (void*)GetProcAddress(module, "asctime");
+    p_strftime = (void*)GetProcAddress(module, "strftime");
     p__crt_atexit = (void*)GetProcAddress(module, "_crt_atexit");
     p_exit = (void*)GetProcAddress(module, "exit");
     p_crt_at_quick_exit = (void*)GetProcAddress(module, "_crt_at_quick_exit");
@@ -887,6 +889,21 @@ static void test_asctime(void)
     ok(!strcmp(ret, "Thu Jan  1 00:00:00 1970\n"), "asctime returned %s\n", ret);
 }
 
+static void test_strftime(void)
+{
+    const struct tm epoch = { 0, 0, 0, 1, 0, 70, 4, 0, 0 };
+    char bufA[256];
+    size_t retA;
+
+    retA = p_strftime(bufA, sizeof(bufA), "%T", &epoch);
+    ok(retA == 8, "expected 8, got %d\n", (int)retA);
+    ok(!strcmp(bufA, "00:00:00"), "got %s\n", bufA);
+
+    retA = p_strftime(bufA, sizeof(bufA), "%#T", &epoch);
+    ok(retA == 5, "expected 5, got %d\n", (int)retA);
+    ok(!strcmp(bufA, "0:0:0"), "got %s\n", bufA);
+}
+
 static LONG* get_failures_counter(HANDLE *map)
 {
     *map = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
@@ -1132,6 +1149,7 @@ START_TEST(misc)
     test_isblank();
     test_math_errors();
     test_asctime();
+    test_strftime();
     test_exit(arg_v[0]);
     test_quick_exit(arg_v[0]);
     test__stat32();