urbackup_backend/Interface/File.h
2014-04-15 22:39:33 +02:00

93 lines
1.6 KiB
C++

#ifndef IFILE_H
#define IFILE_H
#include <string>
#include "Types.h"
#include "Object.h"
#include "Server.h"
const int MODE_READ=0;
const int MODE_WRITE=1;
const int MODE_APPEND=2;
const int MODE_RW=3;
const int MODE_RW_CREATE=5;
const int MODE_READ_DEVICE=6;
const int MODE_READ_SEQUENTIAL=7;
const int MODE_READ_SEQUENTIAL_BACKUP=8;
const int MODE_RW_SEQUENTIAL=9;
//Linux only
const int MODE_RW_READNONE=10;
class IFile : public IObject
{
public:
virtual std::string Read(_u32 tr)=0;
virtual _u32 Read(char* buffer, _u32 bsize)=0;
virtual _u32 Write(const std::string &tw)=0;
virtual _u32 Write(const char* buffer, _u32 bsize)=0;
virtual bool Seek(_i64 spos)=0;
virtual _i64 Size(void)=0;
virtual std::string getFilename(void)=0;
virtual std::wstring getFilenameW(void)=0;
};
class ScopedDeleteFile
{
public:
ScopedDeleteFile(IFile *file)
: file(file) {}
~ScopedDeleteFile(void){
del();
}
void clear() {
del();
}
void reset(IFile *pfile) {
del();
file=pfile;
}
void release() {
file=NULL;
}
private:
void del() {
if(file!=NULL) {
std::wstring tmpfn=file->getFilenameW();
file->Remove();
Server->deleteFile(tmpfn);
}
file=NULL;
}
IFile *file;
};
namespace
{
std::string readToString(IFile* f)
{
std::string ret;
ret.resize(static_cast<size_t>(f->Size()));
f->Seek(0);
size_t pos = 0;
while (pos < static_cast<size_t>(f->Size()) )
{
_u32 r = f->Read(&ret[pos], static_cast<_u32>(f->Size())-static_cast<_u32>(pos));
if(r==0)
{
break;
}
pos += r;
}
if(pos!=f->Size())
{
ret.resize(pos);
}
return ret;
}
}
#endif //IFILE_H