Akihiro Sagawa : kernel32: Fix LCMapString buffer calculation with LCMAP_KATAKANA and LCMAP_HALFWIDTH.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b02cdd36150d7afc6cac52725e3b659db0ec68f8
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b02cdd36150d7afc6cac52725e3b659db0ec68f8

Author: Akihiro Sagawa <sagawa.aki at gmail.com>
Date:   Tue Oct 16 00:31:23 2018 +0900

kernel32: Fix LCMapString buffer calculation with LCMAP_KATAKANA and LCMAP_HALFWIDTH.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45982
Signed-off-by: Akihiro Sagawa <sagawa.aki at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernel32/locale.c       | 10 +++++++++-
 dlls/kernel32/tests/locale.c |  1 -
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/dlls/kernel32/locale.c b/dlls/kernel32/locale.c
index 0f37027..4d1eac6 100644
--- a/dlls/kernel32/locale.c
+++ b/dlls/kernel32/locale.c
@@ -3557,8 +3557,16 @@ INT WINAPI LCMapStringEx(LPCWSTR name, DWORD flags, LPCWSTR src, INT srclen, LPW
         else if (flags & LCMAP_HALFWIDTH)
         {
             for (len = 0; srclen; src++, srclen--, len++)
-                if (decompose_katakana(*src, NULL, 0) == 2)
+            {
+                WCHAR wch = *src;
+                /* map Hiragana to Katakana before decomposition if needed */
+                if ((flags & LCMAP_KATAKANA) &&
+                    ((wch >= 0x3041 && wch <= 0x3096) || wch == 0x309D || wch == 0x309E))
+                    wch += 0x60;
+
+                if (decompose_katakana(wch, NULL, 0) == 2)
                     len++;
+            }
         }
         else
             len = srclen;
diff --git a/dlls/kernel32/tests/locale.c b/dlls/kernel32/tests/locale.c
index b8ced50..d3eb2ec 100644
--- a/dlls/kernel32/tests/locale.c
+++ b/dlls/kernel32/tests/locale.c
@@ -2537,7 +2537,6 @@ static void test_lcmapstring_unicode(lcmapstring_wrapper func_ptr, const char *f
     ok(!lstrcmpW(buf, halfwidth_text2), "%s string compare mismatch\n", func_name);
 
     ret2 = func_ptr(LCMAP_HALFWIDTH | LCMAP_KATAKANA, japanese_text, -1, NULL, 0);
-    todo_wine
     ok(ret == ret2, "%s ret %d, expected value %d\n", func_name, ret, ret2);
 
     /* test buffer overflow */