file_utils.cpp

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#include <storage_common/file_utils.hpp>
 
#include <fstream>
#include <stdexcept>
 
namespace storage {
 
namespace {
 
template <typename Container>
Container load_file_bytes(std::string const &file_name)
{
    static_assert(sizeof(typename Container::value_type) == sizeof(char),
              "load_file_bytes requires container to contain byte sized objects");
    std::ifstream file{file_name, std::ios::binary | std::ios::ate};
    if (!file) {
        throw std::runtime_error{"Unable to open file: \"" + file_name + "\""};
    }
 
    Container result;
    result.resize(file.tellg());
 
    file.seekg(0);
    if (!file.read(reinterpret_cast<char *>(result.data()), result.size())) {
        throw std::runtime_error{"Failed to read content of file: \"" + file_name + "\""};
    }
 
    return result;
}
 
} // namespace
 
std::vector<uint8_t> load_file_bytes(std::string const &file_name)
{
    return load_file_bytes<std::vector<uint8_t>>(file_name);
}
 
} // namespace storage