/usr/include/cxxtools/stringdata.h is in libcxxtools-dev 2.0-4ubuntu2.
This file is owned by root:root, with mode 0o644.
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* Copyright (C) 2004-2007 Marc Boris Duerner
*
* 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.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CXXTOOLS_STRINGDATA_H
#define CXXTOOLS_STRINGDATA_H
#include <cxxtools/api.h>
#include <cxxtools/atomicity.h>
#include <cxxtools/char.h>
#include <string>
#include <iterator>
#include <algorithm>
namespace std {
template<>
class allocator<cxxtools::Char>
{
public:
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef cxxtools::Char* pointer;
typedef const cxxtools::Char* const_pointer;
typedef cxxtools::Char& reference;
typedef const cxxtools::Char& const_reference;
typedef cxxtools::Char value_type;
template<typename U>
struct rebind
{ typedef allocator<U> other; };
allocator()
{ }
template<typename U>
allocator(const allocator<U>&)
{ }
~allocator()
{ }
pointer address(reference x) const
{ return &x; }
const_pointer address(const_reference x) const
{ return &x; }
pointer allocate(size_type n, const void* = 0)
{
return static_cast<value_type*>(::operator new(n * sizeof(value_type)));
}
void deallocate(pointer p, size_type)
{ ::operator delete(p); }
size_type max_size() const throw()
{ return size_t(-1) / sizeof(value_type); }
void construct(pointer p, const value_type& val)
{ ::new(p) value_type(val); }
void destroy(pointer p)
{ p->~value_type(); }
};
} // namespace std
namespace cxxtools {
/** @internal
*/
class StringData {
public:
typedef atomic_t atomic_type;
typedef size_t size_type;
typedef cxxtools::Char value_type;
typedef std::char_traits<cxxtools::Char> traits_type;
typedef std::allocator<cxxtools::Char> allocator_type;
public:
StringData(const allocator_type& a = allocator_type());
StringData(const cxxtools::Char* s, size_type length, const allocator_type& a = allocator_type());
StringData(const wchar_t* wstr, size_type length, const allocator_type& a);
StringData(size_type length, cxxtools::Char ch);
~StringData();
allocator_type get_allocator() const
{ return _allocator; }
atomic_type refs() const;
atomic_type ref();
atomic_type unref();
void setInitial()
{ atomicSet(_n, atomic_type(1)); }
/** @brief Check if in busy state
Busy mode means that a modifying action that requires more than one
call by the caller was started. This is the case if a non-const
iterator was aquired or the index operator is used. Busy mode will
be ended if the client calls a modifying action which would also
invalidate an iterator even if the class was not shared.
*/
bool busy() const
{ return refs() == atomic_type(-1); }
/** @brief Enter busy state
For example a mutating iterator is aquired, so we can not allow any
data sharing until the caller calls a modifying method that would
normally invalidate any iterator as well.
*/
void setBusy()
{ atomicSet(_n, atomic_type(-1)); }
bool shared() const
{
atomic_t n = refs();
return (n > 1) && ( n != atomic_type(-1) );
}
cxxtools::Char* str();
cxxtools::Char* end();
size_type length() const;
size_type capacity() const;
void clear();
void assign(const cxxtools::Char* s, size_type length);
void assign(size_type length, cxxtools::Char ch);
void append(size_type n, cxxtools::Char ch);
void append(const cxxtools::Char* str, size_type n);
void insert(size_type pos, const cxxtools::Char* str, size_type n);
void insert(size_type pos, size_type n, cxxtools::Char ch);
value_type* erase(value_type* pos, size_type n);
void replace(size_type pos, size_type n, const cxxtools::Char* str, size_type n2);
void replace(size_type pos, size_type n, size_type n2, cxxtools::Char ch);
void reserve(size_type length);
static StringData& emptyInstance()
{
static StringData empty;
return empty;
}
protected:
void allocate(size_type length);
public:
// the allocated size is the capacity plus 1
cxxtools::Char* _str;
size_type _length;
size_type _capacity;
allocator_type _allocator;
volatile mutable atomic_type _n;
};
//! @internal
static struct StringStaticInitializer
{
StringStaticInitializer()
{
StringData::emptyInstance();
}
} pt_string_static_initializer;
} // namespace cxxtools
// Include the implementation header
#include <cxxtools/stringdata.tpp>
#endif
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