DirEntryAttr.h

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/*
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable 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 3
 * of the License, or any later version.
 *
 * Hypertable 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef Hyperspace_DirEntryAttr_h
#define Hyperspace_DirEntryAttr_h

#include <Common/Compat.h>
#include <Common/StaticBuffer.h>

#include <string>
#include <vector>

namespace Hyperspace {

  using namespace Hypertable;

  /*
   * Listing information for each node within a directory.  A vector
   * of these objects gets passed back to the application via a call to
   * Readdirfileattr()
   */
  class DirEntryAttr {
  public:

    DirEntryAttr() {}
    // This copy constructor violates the const-ness of the parameter since
    // this attr takes ownership of the other attr StaticBuffer
    DirEntryAttr(const DirEntryAttr &other) : name(other.name), has_attr(other.has_attr), is_dir(other.is_dir), sub_entries(other.sub_entries) {
      attr = (const_cast<DirEntryAttr&>(other)).attr;
    }

    // This assignment operator violates the const-ness of the parameter since
    // this attr takes ownership of the other attr StaticBuffer
    DirEntryAttr& operator =(const DirEntryAttr& other) { 
      name = other.name;
      has_attr = other.has_attr;
      is_dir = other.is_dir;
      sub_entries = other.sub_entries;
      attr.free();
      attr = (const_cast<DirEntryAttr&>(other)).attr;
      return *this;
    }

    std::string name;
    StaticBuffer attr;
    bool has_attr;
    bool is_dir;

    std::vector<DirEntryAttr> sub_entries;
  };

  struct LtDirEntryAttr {
    bool operator()(const class DirEntryAttr &x, const class DirEntryAttr &y) const {
      if (x.name == y.name)
        return (int)x.is_dir < (int)y.is_dir;
      return x.name < y.name;
    }
  };

  size_t encoded_length_dir_entry_attr(const DirEntryAttr &entry);

  void encode_dir_entry_attr(uint8_t **buf_ptr, const DirEntryAttr &entry);

  DirEntryAttr &decode_dir_entry_attr(const uint8_t **buf_ptr, size_t *remaining_ptr,
                                      DirEntryAttr &entry);

}

#endif // Hyperspace_DirEntryAttr_h