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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /shell/source/win32/shlxthandler/ooofilt/stream_helper.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.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.cxx | 137 |
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: */ |