#include "pifile.h"


bool PIFile::open(const string & path_, Flags<Mode> mode_) {
	cpath = path_;
	cmode = mode_;
	if (cmode[New]) {
		stream.open(cpath.c_str(), fstream::in | fstream::out | fstream::trunc);
		stream.close();
		cmode &= ~New;
		stream.open(cpath.c_str(), (fstream::openmode)(int)cmode | fstream::binary);
	} else stream.open(cpath.c_str(), (fstream::openmode)(int)cmode | fstream::binary);
	return isOpened();
}


string PIFile::readLine() {
	char * buff = new char[4096];
	stream.getline(buff, 4096);
	return string(buff);
}


int PIFile::size() {
	int s, cp = stream.tellg();
	stream.seekg(0, fstream::end);
	s = stream.tellg();
	stream.seekg(cp);
	return s;
}


void PIFile::seek(int position) {
	if (cmode[Read]) stream.seekg(position);
	if (cmode[Write]) stream.seekp(position);
}


void PIFile::resize(int new_size, char fill_) {
	int ds = new_size - size();
	if (ds == 0) return;
	if (ds > 0) {
		char * buff = new char[ds];
		memset(buff, fill_, ds);
		stream.write(buff, ds);
		delete buff;
		return;
	}
	cout << "[PIFile] Downsize is not support yet :-(" << endl;
}


int PIFile::pos() {
	if (cmode[Read]) return stream.tellg();
	if (cmode[Write]) return stream.tellp();
	return -1;
}