file.cpp

//This code is public domain, taken from https://gitorious.org/wikibooks-opengl

#include "file.h"

char* file_read(const char* filename, long* size_ret)
{
	FILE* input = fopen(filename, "rb");

	if (size_ret) *size_ret = 0;

	if(input == NULL) return NULL;

	if(fseek(input, 0, SEEK_END) == -1) return NULL;
	long size = ftell(input);
	if(size == -1) return NULL;
	if(fseek(input, 0, SEEK_SET) == -1) return NULL;

	char* content = new char[(size_t)size+1];
	if(content == NULL)
		return NULL;

	fread(content, 1, (size_t)size, input);
	if(ferror(input))
	{
		delete [] content;
		return NULL;
	}

	if (size_ret) *size_ret = size;

	fclose(input);
	content[size] = '\0';
	return content;
}