// Filename: internalNameCollection.cxx
// Created by:  drose (16Mar02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////

#include "internalNameCollection.h"

#include "indent.h"

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::Constructor
//       Access: Published
//  Description:
////////////////////////////////////////////////////////////////////
InternalNameCollection::
InternalNameCollection() {
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::Copy Constructor
//       Access: Published
//  Description:
////////////////////////////////////////////////////////////////////
InternalNameCollection::
InternalNameCollection(const InternalNameCollection &copy) :
  _names(copy._names)
{
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::Copy Assignment Operator
//       Access: Published
//  Description:
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
operator = (const InternalNameCollection &copy) {
  _names = copy._names;
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::add_name
//       Access: Published
//  Description: Adds a new InternalName to the collection.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
add_name(InternalName *name) {
  // If the pointer to our internal array is shared by any other
  // InternalNameCollections, we have to copy the array now so we won't
  // inadvertently modify any of our brethren InternalNameCollection
  // objects.

  if (_names.get_ref_count() > 1) {
    InternalNames old_names = _names;
    _names = InternalNames::empty_array(0);
    _names.v() = old_names.v();
  }

  _names.push_back(name);
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::remove_name
//       Access: Published
//  Description: Removes the indicated InternalName from the collection.
//               Returns true if the name was removed, false if it was
//               not a member of the collection.
////////////////////////////////////////////////////////////////////
bool InternalNameCollection::
remove_name(InternalName *name) {
  int name_index = -1;
  for (int i = 0; name_index == -1 && i < (int)_names.size(); i++) {
    if (_names[i] == name) {
      name_index = i;
    }
  }

  if (name_index == -1) {
    // The indicated name was not a member of the collection.
    return false;
  }

  // If the pointer to our internal array is shared by any other
  // InternalNameCollections, we have to copy the array now so we won't
  // inadvertently modify any of our brethren InternalNameCollection
  // objects.

  if (_names.get_ref_count() > 1) {
    InternalNames old_names = _names;
    _names = InternalNames::empty_array(0);
    _names.v() = old_names.v();
  }

  _names.erase(_names.begin() + name_index);
  return true;
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::add_names_from
//       Access: Published
//  Description: Adds all the InternalNames indicated in the other
//               collection to this name.  The other names are simply
//               appended to the end of the names in this list;
//               duplicates are not automatically removed.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
add_names_from(const InternalNameCollection &other) {
  int other_num_names = other.get_num_names();
  for (int i = 0; i < other_num_names; i++) {
    add_name(other.get_name(i));
  }
}


////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::remove_names_from
//       Access: Published
//  Description: Removes from this collection all of the InternalNames
//               listed in the other collection.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
remove_names_from(const InternalNameCollection &other) {
  InternalNames new_names;
  int num_names = get_num_names();
  for (int i = 0; i < num_names; i++) {
    PT(InternalName) name = get_name(i);
    if (!other.has_name(name)) {
      new_names.push_back(name);
    }
  }
  _names = new_names;
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::remove_duplicate_names
//       Access: Published
//  Description: Removes any duplicate entries of the same InternalNames
//               on this collection.  If a InternalName appears multiple
//               times, the first appearance is retained; subsequent
//               appearances are removed.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
remove_duplicate_names() {
  InternalNames new_names;

  int num_names = get_num_names();
  for (int i = 0; i < num_names; i++) {
    PT(InternalName) name = get_name(i);
    bool duplicated = false;

    for (int j = 0; j < i && !duplicated; j++) {
      duplicated = (name == get_name(j));
    }

    if (!duplicated) {
      new_names.push_back(name);
    }
  }

  _names = new_names;
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::has_name
//       Access: Published
//  Description: Returns true if the indicated InternalName appears in
//               this collection, false otherwise.
////////////////////////////////////////////////////////////////////
bool InternalNameCollection::
has_name(InternalName *name) const {
  for (int i = 0; i < get_num_names(); i++) {
    if (name == get_name(i)) {
      return true;
    }
  }
  return false;
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::clear
//       Access: Published
//  Description: Removes all InternalNames from the collection.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
clear() {
  _names.clear();
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::get_num_names
//       Access: Published
//  Description: Returns the number of InternalNames in the collection.
////////////////////////////////////////////////////////////////////
int InternalNameCollection::
get_num_names() const {
  return _names.size();
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::get_name
//       Access: Published
//  Description: Returns the nth InternalName in the collection.
////////////////////////////////////////////////////////////////////
InternalName *InternalNameCollection::
get_name(int index) const {
  nassertr(index >= 0 && index < (int)_names.size(), NULL);

  return _names[index];
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::operator []
//       Access: Published
//  Description: Returns the nth InternalName in the collection.  This is
//               the same as get_name(), but it may be a more
//               convenient way to access it.
////////////////////////////////////////////////////////////////////
InternalName *InternalNameCollection::
operator [] (int index) const {
  nassertr(index >= 0 && index < (int)_names.size(), NULL);

  return _names[index];
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::output
//       Access: Published
//  Description: Writes a brief one-line description of the
//               InternalNameCollection to the indicated output stream.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
output(ostream &out) const {
  if (get_num_names() == 1) {
    out << "1 InternalName";
  } else {
    out << get_num_names() << " InternalNames";
  }
}

////////////////////////////////////////////////////////////////////
//     Function: InternalNameCollection::write
//       Access: Published
//  Description: Writes a complete multi-line description of the
//               InternalNameCollection to the indicated output stream.
////////////////////////////////////////////////////////////////////
void InternalNameCollection::
write(ostream &out, int indent_level) const {
  for (int i = 0; i < get_num_names(); i++) {
    indent(out, indent_level) << *get_name(i) << "\n";
  }
}