/usr/include/xmms2/xmmsclient/xmmsclient++/list.h is in libxmmsclient++-dev 0.8+dfsg-18.1build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2003-2011 XMMS2 Team
*
* PLUGINS ARE NOT CONSIDERED TO BE DERIVED WORK !!!
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*/
#ifndef XMMSCLIENTPP_LIST_H
#define XMMSCLIENTPP_LIST_H
#include <xmmsclient/xmmsclient.h>
#include <boost/any.hpp>
#include <boost/shared_ptr.hpp>
#include <xmmsclient/xmmsclient++/dict.h>
#include <xmmsclient/xmmsclient++/typedefs.h>
#include <xmmsclient/xmmsclient++/exceptions.h>
#include <string>
#include <iostream>
#include <iterator>
namespace Xmms
{
template< typename T >
struct type_traits;
template<>
struct type_traits< int32_t >
{
typedef int32_t type;
static int (*get_func)( const xmmsv_t*, int32_t* );
};
template<>
struct type_traits< std::string >
{
typedef const char* type;
static int (*get_func)( const xmmsv_t*, const char** );
};
template<>
struct type_traits< Dict >
{
};
namespace {
template< typename T >
T construct( xmmsv_t* elem )
{
typename type_traits< T >::type temp = 0;
if( !type_traits< T >::get_func( elem, &temp ) ) {
throw wrong_type_error( "Failed to retrieve a value"
" from the list" );
}
return T( temp );
}
template<>
Dict construct( xmmsv_t* elem )
{
return Dict( elem );
}
}
template< typename T >
class List;
template< typename T >
class List_const_iterator_
{
private:
List_const_iterator_( xmmsv_t*, int );
friend class List< T >;
public:
typedef ptrdiff_t difference_type;
typedef std::bidirectional_iterator_tag iterator_category;
typedef T value_type;
typedef const value_type& reference;
typedef const value_type* pointer;
List_const_iterator_();
List_const_iterator_( const List_const_iterator_& );
List_const_iterator_& operator=( const List_const_iterator_& );
~List_const_iterator_();
const value_type& operator*() const;
const value_type* operator->() const;
List_const_iterator_& operator++();
List_const_iterator_ operator++( int );
List_const_iterator_& operator--();
List_const_iterator_ operator--( int );
bool equal( const List_const_iterator_& rh ) const;
private:
xmmsv_t* getElement() const
{
xmmsv_t *elem = NULL;
xmmsv_list_iter_entry( it_, &elem );
return elem;
}
xmmsv_t* list_;
xmmsv_list_iter_t* it_;
};
/** @class List list.h "xmmsclient/xmmsclient++/list.h"
* @brief This class acts as a wrapper for list type values.
* This is actually a virtual class and is specialized with T being
* - std::string
* - int
* - unsigned int
* - Dict
*
* If any other type is used, a compile-time error should occur.
*/
template< typename T >
class List
{
public:
typedef List_const_iterator_< T > const_iterator;
typedef std::reverse_iterator< const_iterator > const_reverse_iterator;
/** Constructor
*/
List( xmmsv_t* value ) :
value_( 0 )
{
if( xmmsv_is_error( value ) ) {
const char *buf;
xmmsv_get_error( value, &buf );
throw value_error( buf );
}
if( !xmmsv_is_type( value, XMMSV_TYPE_LIST ) ) {
throw not_list_error( "Provided value is not a list" );
}
value_ = value;
xmmsv_ref( value_ );
}
/** Copy-constructor.
*/
List( const List<T>& list ) :
value_( list.value_ )
{
xmmsv_ref( value_ );
}
/** Copy assignment operator.
*/
List<T>& operator=( const List<T>& list )
{
value_ = list.value_;
xmmsv_ref( value_ );
return *this;
}
/** Destructor.
*/
~List()
{
xmmsv_unref( value_ );
}
const_iterator begin() const
{
return const_iterator( value_, 0 );
}
const_iterator end() const
{
return const_iterator( value_, xmmsv_list_get_size(value_) );
}
const_reverse_iterator rbegin() const
{
return const_reverse_iterator(end());
}
const_reverse_iterator rend() const
{
return const_reverse_iterator(begin());
}
/** @cond */
private:
xmmsv_t* value_;
/** @endcond */
};
template< typename T >
inline
bool operator==( const List_const_iterator_< T >& lh, const List_const_iterator_< T >& rh )
{
return lh.equal( rh );
}
template< typename T >
inline
bool operator!=( const List_const_iterator_< T >& lh, const List_const_iterator_< T >& rh )
{
return !( lh == rh );
}
template< typename T >
List_const_iterator_< T >::List_const_iterator_( xmmsv_t* list, int pos )
: list_( list ), it_( 0 )
{
xmmsv_get_list_iter( list_, &it_ );
xmmsv_list_iter_seek( it_, pos );
}
template< typename T >
List_const_iterator_< T >::List_const_iterator_()
: list_( 0 ), it_( 0 )
{
}
template< typename T >
List_const_iterator_< T >::List_const_iterator_( const List_const_iterator_& rh )
: list_( rh.list_ ), it_( 0 )
{
if( list_ ) {
xmmsv_t* rh_parent( xmmsv_list_iter_get_parent( rh.it_ ) );
xmmsv_get_list_iter( rh_parent, &it_ );
xmmsv_list_iter_seek( it_, xmmsv_list_iter_tell( rh.it_ ) );
}
}
template< typename T >
List_const_iterator_< T >&
List_const_iterator_< T >::operator=( const List_const_iterator_& rh )
{
list_ = rh.list_;
if ( it_ ) {
xmmsv_list_iter_explicit_destroy( it_ );
}
if( list_ ) {
xmmsv_t* rh_parent( xmmsv_list_iter_get_parent( rh.it_ ) );
xmmsv_get_list_iter( rh_parent, &it_ );
xmmsv_list_iter_seek( it_, xmmsv_list_iter_tell( rh.it_ ) );
}
else {
it_ = 0;
}
return *this;
}
template< typename T >
List_const_iterator_< T >::~List_const_iterator_()
{
if ( it_ ) {
xmmsv_list_iter_explicit_destroy( it_ );
}
}
template< typename T >
const typename List_const_iterator_< T >::value_type&
List_const_iterator_<T>::operator*() const
{
static value_type value;
value = construct< T >( getElement() );
return value;
}
template< typename T >
const typename List_const_iterator_< T >::value_type*
List_const_iterator_<T>::operator->() const
{
return &( operator*() );
}
template< typename T >
List_const_iterator_< T >&
List_const_iterator_< T >::operator++()
{
xmmsv_list_iter_next( it_ );
return *this;
}
template< typename T >
List_const_iterator_< T >
List_const_iterator_< T >::operator++( int )
{
List_const_iterator_ tmp( *this );
++*this;
return tmp;
}
template< typename T >
List_const_iterator_< T >&
List_const_iterator_< T >::operator--()
{
xmmsv_list_iter_prev( it_ );
return *this;
}
template< typename T >
List_const_iterator_< T >
List_const_iterator_< T >::operator--( int )
{
List_const_iterator_ tmp( *this );
--*this;
return tmp;
}
template< typename T >
bool List_const_iterator_< T >::equal( const List_const_iterator_& rh ) const
{
if( list_ == rh.list_ ) {
return xmmsv_list_iter_tell( it_ ) == xmmsv_list_iter_tell( rh.it_ );
}
return false;
}
}
#endif // XMMSCLIENTPP_LIST_H
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