mirror of
https://github.com/ONLYOFFICE/core.git
synced 2026-02-10 18:05:41 +08:00
137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
/*
|
|
* (c) Copyright Ascensio System SIA 2010-2019
|
|
*
|
|
* This program is a free software product. You can redistribute it and/or
|
|
* modify it under the terms of the GNU Affero General Public License (AGPL)
|
|
* version 3 as published by the Free Software Foundation. In accordance with
|
|
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
|
|
* that Ascensio System SIA expressly excludes the warranty of non-infringement
|
|
* of any third-party rights.
|
|
*
|
|
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
|
|
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
|
|
*
|
|
* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
|
|
* street, Riga, Latvia, EU, LV-1050.
|
|
*
|
|
* The interactive user interfaces in modified source and object code versions
|
|
* of the Program must display Appropriate Legal Notices, as required under
|
|
* Section 5 of the GNU AGPL version 3.
|
|
*
|
|
* Pursuant to Section 7(b) of the License you must retain the original Product
|
|
* logo when distributing the program. Pursuant to Section 7(e) we decline to
|
|
* grant you any rights under trademark law for use of our trademarks.
|
|
*
|
|
* All the Product's GUI elements, including illustrations and icon sets, as
|
|
* well as technical writing content are licensed under the terms of the
|
|
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
|
|
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
|
|
*
|
|
*/
|
|
#include "stream.h"
|
|
#include "../../DesktopEditor/common/File.h"
|
|
#include <algorithm>
|
|
|
|
|
|
_INT64 CFCPP::Length(const CFCPP::Stream& st)
|
|
{
|
|
if (st.get() == nullptr)
|
|
return 0;
|
|
|
|
auto curPos = st->tell();
|
|
st->seek(0, std::ios_base::end);
|
|
auto ssize = st->tell();
|
|
st->seek(curPos);
|
|
|
|
return ssize;
|
|
}
|
|
|
|
CFCPP::Stream CFCPP::OpenFileStream(std::wstring filename, bool bRewrite, bool trunc)
|
|
{
|
|
BYTE* pUtf8 = nullptr;
|
|
LONG lLen = 0;
|
|
NSFile::CUtf8Converter::GetUtf8StringFromUnicode(filename.c_str(), filename.length(), pUtf8, lLen, false);
|
|
std::string utf8filename(pUtf8, pUtf8 + lLen);
|
|
delete [] pUtf8;
|
|
|
|
return OpenFileStream(utf8filename, bRewrite, trunc);
|
|
}
|
|
|
|
CFCPP::Stream CFCPP::OpenFileStream(std::string filename, bool bRewrite, bool trunc)
|
|
{
|
|
CFCPP::Stream st;
|
|
|
|
// it's not good, but otherwise file doesn't create or if use ios::app, then the seek for writing will be blocked
|
|
if (bRewrite)
|
|
std::fstream create(filename, std::ios::app | std::ios::out);
|
|
|
|
if (trunc && bRewrite)
|
|
st.reset(new FStreamWrapper(filename, std::ios::binary | std::ios::in | std::ios::out | std::ios::trunc));
|
|
else if (bRewrite)
|
|
st.reset(new FStreamWrapper(filename, std::ios::binary | std::ios::in | std::ios::out));
|
|
else
|
|
st.reset(new FStreamWrapper(filename, std::ios::binary | std::ios::in));
|
|
|
|
return st;
|
|
}
|
|
|
|
bool CFCPP::IsOpen(const Stream &st)
|
|
{
|
|
if (std::dynamic_pointer_cast<FStreamWrapper>(st))
|
|
return std::static_pointer_cast<FStreamWrapper>(st)->is_open();
|
|
|
|
return false;
|
|
}
|
|
|
|
std::string CFCPP::CorrectUnixPath(const std::string original)
|
|
{
|
|
#if !defined(_WIN32) && !defined (_WIN64)
|
|
return original;
|
|
#else
|
|
auto str = original;
|
|
std::replace(str.begin(), str.end(), '/', '\\');
|
|
return str;
|
|
#endif
|
|
}
|
|
|
|
_INT64 CFCPP::FileLenght(std::wstring filename)
|
|
{
|
|
auto stream = OpenFileStream(filename);
|
|
auto lenght = Length(stream);
|
|
stream->close();
|
|
|
|
return lenght;
|
|
}
|
|
|
|
ULONG64 CFCPP::FileFNVHash(std::wstring filename, _INT64 len, _INT64 offset)
|
|
{
|
|
|
|
auto stream = OpenFileStream(filename);
|
|
if (!IsOpen(stream))
|
|
return 0;
|
|
|
|
if (len < 0)
|
|
len = Length(stream);
|
|
|
|
stream->seek(offset);
|
|
|
|
ULONG64 h = 2166136261;
|
|
constexpr _INT64 bufLen = 0x2000;
|
|
char buffer[bufLen];
|
|
while (len > 0)
|
|
{
|
|
memset(buffer, 0, bufLen);
|
|
_INT64 readLen = std::min(bufLen, len);
|
|
stream->read(buffer, readLen);
|
|
_INT64 i;
|
|
|
|
for (i = 0; i < readLen; i++)
|
|
h = (h * 16777619) ^ buffer[i];
|
|
|
|
len -= readLen;
|
|
}
|
|
|
|
return h;
|
|
}
|