cpp-game-engine/util/files.cxx

//
//  files.cxx
//  gameutils
//
//  Created by Sam Jaffe on 5/19/19.
//  Copyright © 2019 Sam Jaffe. All rights reserved.
//

#include "game/util/files.hpp"

#include "scope_guard/scope_guard.hpp"

namespace files {
  std::unique_ptr<char[]> load(std::string const & absolute_path) {
    FILE * fp = fopen(absolute_path.c_str(), "r");
    if (!fp) { return nullptr; }

    scope(exit) { fclose(fp); };
    // Determine file size
    fseek(fp, 0, SEEK_END);
    long size = ftell(fp);
    if (size < 0) { return nullptr; }

    std::unique_ptr<char[]> buffer{new char[size + 1]};

    rewind(fp);
    size_t read = fread(buffer.get(), sizeof(char), size, fp);
    if (read != static_cast<size_t>(size)) {
      fputs("Error reading file", stderr);
      return nullptr;
    } else {
      buffer[read + 1] = '\0';
    }
    return buffer;
  }
}