msvcrt: Added wctob implementation.

dlls/msvcr100/msvcr100.spec

@@ -1659,7 +1659,7 @@
 @ cdecl wcstombs_s(ptr ptr long wstr long) msvcrt.wcstombs_s
 @ cdecl wcstoul(wstr ptr long) msvcrt.wcstoul
 @ stub wcsxfrm
-@ stub wctob
+@ cdecl wctob(long) msvcrt.wctob
 @ cdecl wctomb(ptr long) msvcrt.wctomb
 @ stub wctomb_s
 @ stub wmemcpy_s

dlls/msvcr80/msvcr80.spec

@@ -1513,7 +1513,7 @@
 @ cdecl wcstombs_s(ptr ptr long wstr long) msvcrt.wcstombs_s
 @ cdecl wcstoul(wstr ptr long) msvcrt.wcstoul
 @ stub wcsxfrm
-@ stub wctob
+@ cdecl wctob(long) msvcrt.wctob
 @ cdecl wctomb(ptr long) msvcrt.wctomb
 @ stub wctomb_s
 @ varargs wprintf(wstr) msvcrt.wprintf

dlls/msvcr90/msvcr90.spec

@@ -1497,7 +1497,7 @@
 @ cdecl wcstombs_s(ptr ptr long wstr long) msvcrt.wcstombs_s
 @ cdecl wcstoul(wstr ptr long) msvcrt.wcstoul
 @ stub wcsxfrm
-@ stub wctob
+@ cdecl wctob(long) msvcrt.wctob
 @ cdecl wctomb(ptr long) msvcrt.wctomb
 @ stub wctomb_s
 @ varargs wprintf(wstr) msvcrt.wprintf

dlls/msvcrt/msvcrt.spec

@@ -1468,7 +1468,7 @@
 @ cdecl wcstombs_s(ptr ptr long wstr long) MSVCRT_wcstombs_s
 @ cdecl wcstoul(wstr ptr long) ntdll.wcstoul
 @ stub wcsxfrm #(ptr wstr long) MSVCRT_wcsxfrm
-# stub wctob
+@ cdecl wctob(long) MSVCRT_wctob
 @ cdecl wctomb(ptr long) MSVCRT_wctomb
 # stub wctomb_s
 @ varargs wprintf(wstr) MSVCRT_wprintf

dlls/msvcrt/tests/string.c

@@ -78,6 +78,7 @@ static _invalid_parameter_handler (__cdecl *p_set_invalid_parameter_handler)(_in
 static int (__cdecl *p_wcslwr_s)(wchar_t*,size_t);
 static errno_t (__cdecl *p_mbsupr_s)(unsigned char *str, size_t numberOfElements);
 static errno_t (__cdecl *p_mbslwr_s)(unsigned char *str, size_t numberOfElements);
+static int (__cdecl *p_wctob)(wint_t);
 
 #define SETNOFAIL(x,y) x = (void*)GetProcAddress(hMsvcrt,y)
 #define SET(x,y) SETNOFAIL(x,y); ok(x != NULL, "Export '%s' not found\n", y)
@@ -1913,6 +1914,40 @@ static void test__ultoa_s(void)
        buffer);
 }
 
+static void test_wctob(void)
+{
+    int ret;
+
+    if(!p_wctob || !setlocale(LC_ALL, "chinese-traditional")) {
+        win_skip("Skipping wctob tests\n");
+        return;
+    }
+
+    ret = p_wctob(0x8141);
+    ok(ret == EOF, "ret = %x\n", ret);
+
+    ret = p_wctob(0x81);
+    ok(ret == EOF, "ret = %x\n", ret);
+
+    ret = p_wctob(0xe0);
+    ok(ret == 0x61, "ret = %x\n", ret);
+
+    _setmbcp(1250);
+    ret = p_wctob(0x81);
+    /* wctob should not be affected by _setmbcp */
+    todo_wine ok(ret == EOF, "ret = %x\n", ret);
+
+    setlocale(LC_ALL, "C");
+    ret = p_wctob(0x8141);
+    ok(ret == EOF, "ret = %x\n", ret);
+
+    ret = p_wctob(0x81);
+    ok(ret == (int)(char)0x81, "ret = %x\n", ret);
+
+    ret = p_wctob(0xe0);
+    ok(ret == (int)(char)0xe0, "ret = %x\n", ret);
+}
+
 START_TEST(string)
 {
     char mem[100];
@@ -1947,6 +1982,7 @@ START_TEST(string)
     p_wcslwr_s = (void*)GetProcAddress(hMsvcrt, "_wcslwr_s");
     p_mbsupr_s = (void*)GetProcAddress(hMsvcrt, "_mbsupr_s");
     p_mbslwr_s = (void*)GetProcAddress(hMsvcrt, "_mbslwr_s");
+    p_wctob = (void*)GetProcAddress(hMsvcrt, "wctob");
 
     /* MSVCRT memcpy behaves like memmove for overlapping moves,
        MFC42 CString::Insert seems to rely on that behaviour */
@@ -1989,4 +2025,7 @@ START_TEST(string)
     test__wcslwr_s();
     test__mbsupr_s();
     test__mbslwr_s();
+
+    /* This test is changing locale */
+    test_wctob();
 }

dlls/msvcrt/wcs.c

@@ -1500,12 +1500,27 @@ MSVCRT_wchar_t * CDECL MSVCRT_wcstok( MSVCRT_wchar_t *str, const MSVCRT_wchar_t
     return wcstok_s(str, delim, &msvcrt_get_thread_data()->wcstok_next);
 }
 
+/*********************************************************************
+ *		wctob (MSVCRT.@)
+ */
+INT CDECL MSVCRT_wctob( MSVCRT_wint_t wchar )
+{
+    MSVCRT__locale_t locale = get_locale();
+    char out;
+    BOOL error;
+
+    if(WideCharToMultiByte( locale->locinfo->lc_codepage, 0, &wchar, 1, &out, 1, NULL, &error ) && !error)
+        return (INT)out;
+    return MSVCRT_EOF;
+}
+
 /*********************************************************************
  *		wctomb (MSVCRT.@)
  */
 INT CDECL MSVCRT_wctomb( char *dst, MSVCRT_wchar_t ch )
 {
-  return WideCharToMultiByte( CP_ACP, 0, &ch, 1, dst, 6, NULL, NULL );
+    MSVCRT__locale_t locale = get_locale();
+    return WideCharToMultiByte( locale->locinfo->lc_codepage, 0, &ch, 1, dst, 6, NULL, NULL );
 }
 
 /*********************************************************************