25 lines
761 B
C++
25 lines
761 B
C++
|
#pragma once
|
||
|
|
#include <fc/io/raw.hpp>
|
||
|
|
#include <fc/interprocess/file_mapping.hpp>
|
||
|
|
#include <fc/filesystem.hpp>
|
||
|
|
#include <fc/exception/exception.hpp>
|
||
|
|
|
||
|
|
namespace fc
|
||
|
|
{
|
||
|
|
namespace raw
|
||
|
|
{
|
||
|
|
template<typename T>
|
||
|
|
void unpack_file( const fc::path& filename, T& obj )
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
fc::file_mapping fmap( filename.generic_string().c_str(), fc::read_only);
|
||
|
|
fc::mapped_region mapr( fmap, fc::read_only, 0, fc::file_size(filename) );
|
||
|
|
auto cs = (const char*)mapr.get_address();
|
||
|
|
|
||
|
|
fc::datastream<const char*> ds( cs, mapr.get_size() );
|
||
|
|
fc::raw::unpack(ds,obj);
|
||
|
|
} FC_RETHROW_EXCEPTIONS( info, "unpacking file ${file}", ("file",filename) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|