get_root_dir.h

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/*
 * Copyright (C) 2015 - Erik Nelson
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef UTILS_STRINGS_GET_ROOT_DIR_H
#define UTILS_STRINGS_GET_ROOT_DIR_H

#include <string>
#include <vector>

#include "tokenize_file_string.h"

namespace strings {

// Given a path to a file (e.g. /home/erik/test.png), return the first
// '/'-separated token (i.e. home). There are no checks to ensure that the
// resulting string is actually a directory.
std::string GetRootDir(const std::string &path) {
  std::vector<std::string> path_tokens;
  TokenizeFileString(path, &path_tokens);

  // If there are no tokens or only one token in the file path, return an empty string.
  if (path_tokens.size() <= 1)
    return std::string("");

  return path_tokens.front();
}

} //\namespace strings

#endif