mirror of
https://github.com/uroni/urbackup_backend.git
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114 lines
2.2 KiB
C++
114 lines
2.2 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011-2016 Martin Raiber
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "file_memory.h"
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#ifndef _WIN32
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#include <memory.h>
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#endif
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CMemoryFile::CMemoryFile()
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{
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pos=0;
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}
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std::string CMemoryFile::Read(_u32 tr)
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{
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if(pos>=data.size() )
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return "";
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size_t rtr=(std::min)((size_t)tr, data.size()-pos);
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std::string ret;
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ret.resize(rtr);
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memcpy(&ret[0], &data[pos], rtr);
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pos+=rtr;
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return ret;
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}
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_u32 CMemoryFile::Read(char* buffer, _u32 bsize)
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{
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if(pos>=data.size() )
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return 0;
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size_t rtr=(std::min)((size_t)bsize, data.size()-pos);
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memcpy(buffer, &data[pos], rtr);
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pos+=rtr;
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return (_u32)rtr;
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}
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_u32 CMemoryFile::Write(const std::string &tw)
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{
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return Write(tw.c_str(), (_u32)tw.size());
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}
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_u32 CMemoryFile::Write(const char* buffer, _u32 bsize)
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{
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if(pos+bsize>data.size())
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{
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data.resize(pos+bsize);
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memcpy(&data[pos], buffer, bsize);
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pos+=bsize;
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return bsize;
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}
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else
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{
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memcpy(&data[pos], buffer, bsize);
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pos+=bsize;
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return bsize;
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}
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}
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bool CMemoryFile::Seek(_i64 spos)
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{
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if((size_t)spos<data.size() && spos>=0)
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{
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pos=(size_t)spos;
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return true;
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}
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else
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{
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return false;
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}
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}
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_i64 CMemoryFile::Size(void)
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{
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return data.size();
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}
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_i64 CMemoryFile::RealSize()
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{
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return Size();
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}
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std::string CMemoryFile::getFilename()
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{
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return "_MEMORY_";
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}
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bool CMemoryFile::PunchHole( _i64 spos, _i64 size )
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{
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return false;
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}
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bool CMemoryFile::Sync()
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{
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return false;
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}
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