FileReader.cpp

/*
 * FilReader.cpp
 *
 *  Created on: 04/12/2012
 *      Author: polymorpher
 */
#include"FileReader.hpp"
namespace AliasLDA {
char* FileReader::readFile(const char *filename) {
	FILE *fp;
	int err;
	int size;

	char *source;

	fp = fopen(filename, "rb");
	if (fp == NULL) {
		printf("Could not open file: %s\n", filename);
		exit(-1);
	}

	err = fseek(fp, 0, SEEK_END);
	if (err != 0) {
		printf("Error seeking to end of file\n");
		exit(-1);
	}

	size = ftell(fp);
	if (size < 0) {
		printf("Error getting file position\n");
		exit(-1);
	}

	err = fseek(fp, 0, SEEK_SET);
	if (err != 0) {
		printf("Error seeking to start of file\n");
		exit(-1);
	}

	source = (char*) malloc(size + 1);
	if (source == NULL) {
		printf("Error allocating %d bytes for the buffer\n", size + 1);
		exit(-1);
	}

	err = fread(source, 1, size, fp);
	if (err != size) {
		printf("only read %d bytes\n", err);
		exit(0);
	}

	source[size] = '\0';

	return source;
}

}