#include "leparseutil.hpp"

std::vector<uint8_t> read_file_part(std::istream& is, std::streamsize offset, size_t length) {	
	is.clear();
	is.seekg(0, std::ios::beg);
	
	is.ignore(offset);
	
	std::vector<uint8_t> vec;
	vec.reserve(length);
	
	std::copy_n(std::istream_iterator<uint8_t>(is), length, std::back_inserter(vec));
	return vec;
}

std::vector<uint8_t> read_object(std::istream& is, le::File file, binparse::Value32 object_id) {
	auto object = file.object_table.entries[object_id];
	auto index = object.page_table_index;
	
	return read_file_part(is, file.le_header.data_page_offset, file.le_header.page_size * (object.nr_page_table_entries -(index -1)));
}

le::File parse_file(std::istream& is)
{
	is.clear();
	is.seekg(0, std::ios::beg);
	
	auto file = le::parse_file(is);
	
	return file;
}