Read an entire file in C++

read-entire-file.cpp

#include <string>
#include <fstream>
#include <vector>

int ReadFileContents(const char *filename, int binaryMode, std::string &contentOut)
{
	contentOut = "";
	std::ios_base::openmode mode = (std::ios_base::openmode)0;
	if(binaryMode)
		mode ^= std::ios::binary;
	std::ifstream file(filename, mode);
	if(!file) return 0;

	file.seekg(0,std::ios::end);
	std::streampos length = file.tellg();
	file.seekg(0,std::ios::beg);

	std::vector<char> buffer(length);
	file.read(&buffer[0],length);

	contentOut.assign(&buffer[0], length);
	return 1;
}