Nikolay Sivov : opcservices: Update content stream position on Read().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 55af98d1a3158b7a8b061d2162050902b80782a9
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=55af98d1a3158b7a8b061d2162050902b80782a9

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Fri Sep 21 09:23:30 2018 +0300

opcservices: Update content stream position on Read().

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/opcservices/package.c           | 2 ++
 dlls/opcservices/tests/opcservices.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/dlls/opcservices/package.c b/dlls/opcservices/package.c
index fb07d4d..5534fe6 100644
--- a/dlls/opcservices/package.c
+++ b/dlls/opcservices/package.c
@@ -560,6 +560,8 @@ static HRESULT WINAPI opc_content_stream_Read(IStream *iface, void *buff, ULONG
     if (*num_read)
         memcpy(buff, stream->content->data + stream->pos.QuadPart, *num_read);
 
+    stream->pos.QuadPart += *num_read;
+
     return S_OK;
 }
 
diff --git a/dlls/opcservices/tests/opcservices.c b/dlls/opcservices/tests/opcservices.c
index 2ef5677..6bb0c54 100644
--- a/dlls/opcservices/tests/opcservices.c
+++ b/dlls/opcservices/tests/opcservices.c
@@ -159,6 +159,11 @@ static void test_package(void)
     ok(hr == S_OK, "Failed to read content, hr %#x.\n", hr);
     ok(!memcmp(buff, "abc", 3), "Unexpected content.\n");
 
+    move.QuadPart = 0;
+    hr = IStream_Seek(stream2, move, STREAM_SEEK_CUR, &pos);
+    ok(SUCCEEDED(hr), "Seek failed, hr %#x.\n", hr);
+    ok(pos.QuadPart == 3, "Unexpected position.\n");
+
     IStream_Release(stream);
     IStream_Release(stream2);