44 lines
824 B
C++
44 lines
824 B
C++
#include "Data.h"
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#include <stdexcept>
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using std::istream;
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using std::ofstream;
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using std::ifstream;
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using std::ios;
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namespace bf = boost::filesystem;
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namespace cpputils {
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boost::optional<Data> Data::LoadFromFile(const bf::path &filepath) {
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ifstream file(filepath.c_str(), ios::binary);
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if (!file.good()) {
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return boost::none;
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}
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size_t size = _getStreamSize(file);
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Data result(size);
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result._readFromStream(file);
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return std::move(result);
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}
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size_t Data::_getStreamSize(istream &stream) {
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auto current_pos = stream.tellg();
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//Retrieve length
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stream.seekg(0, stream.end);
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auto endpos = stream.tellg();
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//Restore old position
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stream.seekg(current_pos, stream.beg);
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return endpos - current_pos;
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}
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void Data::_readFromStream(istream &stream) {
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stream.read((char*)_data, _size);
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}
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}
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