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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx
parentInitial commit. (diff)
downloadlibreoffice-upstream/4%7.4.7.tar.xz
libreoffice-upstream/4%7.4.7.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx')
-rw-r--r--shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx137
1 files changed, 137 insertions, 0 deletions
diff --git a/shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx b/shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx
new file mode 100644
index 000000000..76578ba70
--- /dev/null
+++ b/shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx
@@ -0,0 +1,137 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+
+#include <stdio.h>
+#include <objidl.h>
+#include <stream_helper.hxx>
+
+BufferStream::BufferStream(IStream *str) :
+ stream(str)
+{
+ // These next few lines work around the "Seek pointer" bug found on Vista.
+ char cBuf[20];
+ unsigned long nCount;
+ ULARGE_INTEGER nNewPosition;
+ LARGE_INTEGER nMove;
+ nMove.QuadPart = 0;
+ stream->Seek( nMove, STREAM_SEEK_SET, &nNewPosition );
+ stream->Read( cBuf, 20, &nCount );
+}
+
+BufferStream::~BufferStream()
+{
+}
+
+unsigned long BufferStream::sread (unsigned char *buf, unsigned long size)
+{
+ unsigned long newsize;
+ HRESULT hr;
+
+ hr = stream->Read (buf, size, &newsize);
+ if (hr == S_OK)
+ return newsize;
+ else
+ return static_cast<unsigned long>(0);
+}
+
+long BufferStream::stell ()
+{
+ HRESULT hr;
+ LARGE_INTEGER Move;
+ ULARGE_INTEGER NewPosition;
+ Move.QuadPart = 0;
+ NewPosition.QuadPart = 0;
+
+ hr = stream->Seek (Move, STREAM_SEEK_CUR, &NewPosition);
+ if (hr == S_OK)
+ return static_cast<long>(NewPosition.QuadPart);
+ else
+ return -1;
+}
+
+long BufferStream::sseek (long offset, int origin)
+{
+ HRESULT hr;
+ LARGE_INTEGER Move;
+ DWORD dwOrigin;
+ Move.QuadPart = static_cast<__int64>(offset);
+
+ switch (origin)
+ {
+ case SEEK_CUR:
+ dwOrigin = STREAM_SEEK_CUR;
+ break;
+ case SEEK_END:
+ dwOrigin = STREAM_SEEK_END;
+ break;
+ case SEEK_SET:
+ dwOrigin = STREAM_SEEK_SET;
+ break;
+ default:
+ return -1;
+ }
+
+ hr = stream->Seek (Move, dwOrigin, nullptr);
+ if (hr == S_OK)
+ return 0;
+ else
+ return -1;
+}
+
+FileStream::FileStream(const Filepath_char_t *filename) :
+ file(nullptr)
+{
+ // fdo#67534: avoid locking to not interfere with soffice opening the file
+ file = _wfsopen(filename, L"rb", _SH_DENYNO);
+}
+
+FileStream::~FileStream()
+{
+ if (file)
+ fclose(file);
+}
+
+unsigned long FileStream::sread (unsigned char *buf, unsigned long size)
+{
+ if (file)
+ return static_cast<unsigned long>(fread(buf, 1, size, file));
+ return 0;
+}
+
+long FileStream::stell ()
+{
+ if (file)
+ return ftell(file);
+ return -1;
+}
+
+long FileStream::sseek (long offset, int origin)
+{
+ if (file)
+ return fseek(file, offset, origin);
+ return -1;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */