atlstl/shims/access/string/ccombstr.hpp

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/* /////////////////////////////////////////////////////////////////////////
 * File:        atlstl/shims/access/string/ccombstr.hpp
 *
 * Purpose:     Contains classes and functions for dealing with OLE/COM strings.
 *
 * Created:     27th May 2002
 * Updated:     10th August 2009
 *
 * Home:        http://stlsoft.org/
 *
 * Copyright (c) 2002-2009, Matthew Wilson and Synesis Software
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
 *   any contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * ////////////////////////////////////////////////////////////////////// */


#ifndef ATLSTL_INCL_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR
#define ATLSTL_INCL_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
# define ATLSTL_VER_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR_MAJOR       4
# define ATLSTL_VER_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR_MINOR       0
# define ATLSTL_VER_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR_REVISION    1
# define ATLSTL_VER_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR_EDIT        97
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * Includes
 */

#ifndef ATLSTL_INCL_ATLSTL_HPP_ATLSTL
# include <atlstl/atlstl.hpp>
#endif /* !ATLSTL_INCL_ATLSTL_HPP_ATLSTL */
#ifndef STLSOFT_INCL_STLSOFT_SHIMS_ACCESS_HPP_STRING
# include <stlsoft/shims/access/string.hpp>
#endif /* !STLSOFT_INCL_STLSOFT_SHIMS_ACCESS_HPP_STRING */
#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_CSTRING_MAKER
# include <stlsoft/string/cstring_maker.hpp>
#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_CSTRING_MAKER */
#ifdef STLSOFT_UNITTEST
# include <wchar.h>
#endif /* STLSOFT_UNITTEST */

/* /////////////////////////////////////////////////////////////////////////
 * Namespace
 */

#ifndef _ATLSTL_NO_NAMESPACE
# if defined(_STLSOFT_NO_NAMESPACE) || \
     defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
/* There is no stlsoft namespace, so must define ::atlstl */
namespace atlstl
{
# else
/* Define stlsoft::atlstl_project */

namespace stlsoft
{

namespace atlstl_project
{

# endif /* _STLSOFT_NO_NAMESPACE */
#endif /* !_ATLSTL_NO_NAMESPACE */

/* /////////////////////////////////////////////////////////////////////////
 * c_str_data
 *
 * This can be applied to an expression, and the return value is either a
 * pointer to the character string or to an empty string.
 */

inline LPCOLESTR c_str_data(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return c_str_ptr(s);
}

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
inline LPCOLESTR c_str_data_w(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return c_str_data(s);
}
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * c_str_len
 *
 * This can be applied to an expression, and the return value is the number
 * of characters in the character string in the expression.
 */

/* CComBSTR */

inline as_size_t c_str_len(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return s.Length();
}

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
inline as_size_t c_str_len_w(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return c_str_len(s);
}
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * c_str_ptr
 *
 * This can be applied to an expression, and the return value is either a
 * pointer to the character string or to an empty string.
 */

/* CComBSTR */

inline LPCOLESTR c_str_ptr(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    /* NULL is a valid BSTR value, so check for that */
    return (s.m_str != 0) ? s.m_str : L"";
}

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
inline LPCOLESTR c_str_ptr_w(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return c_str_ptr(s);
}
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * c_str_ptr_null
 *
 * This can be applied to an expression, and the return value is either a
 * pointer to the character string or NULL.
 */

/* CComBSTR */

inline LPCOLESTR c_str_ptr_null(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    /* NULL is a valid BSTR value, so may return that */
    return s.m_str;
}

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
inline LPCOLESTR c_str_ptr_null_w(atlstl_ns_qual_atl(CComBSTR) const& s)
{
    return c_str_ptr_null(s);
}
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

// Unit-testing

#ifdef STLSOFT_UNITTEST
# include "./unittest/ccombstr_unittest_.h"
#endif /* STLSOFT_UNITTEST */

/* ////////////////////////////////////////////////////////////////////// */

#ifndef _ATLSTL_NO_NAMESPACE
# if defined(_STLSOFT_NO_NAMESPACE) || \
     defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
} // namespace atlstl
# else
} // namespace stlsoft::atlstl_project
} // namespace stlsoft
# endif /* _STLSOFT_NO_NAMESPACE */
#endif /* !_ATLSTL_NO_NAMESPACE */

/* /////////////////////////////////////////////////////////////////////////
 * Namespace
 *
 * The string access shims exist either in the stlsoft namespace, or in the
 * global namespace. This is required by the lookup rules.
 *
 */

#ifndef _ATLSTL_NO_NAMESPACE
# if !defined(_STLSOFT_NO_NAMESPACE) && \
     !defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
namespace stlsoft
{
# else /* ? _STLSOFT_NO_NAMESPACE */
/* There is no stlsoft namespace, so must define in the global namespace */
# endif /* !_STLSOFT_NO_NAMESPACE */

using ::atlstl::c_str_data;
using ::atlstl::c_str_data_w;

using ::atlstl::c_str_len;
using ::atlstl::c_str_len_w;

using ::atlstl::c_str_ptr;
using ::atlstl::c_str_ptr_w;

using ::atlstl::c_str_ptr_null;
using ::atlstl::c_str_ptr_null_w;

# if !defined(_STLSOFT_NO_NAMESPACE) && \
     !defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
} // namespace stlsoft
# else /* ? _STLSOFT_NO_NAMESPACE */
/* There is no stlsoft namespace, so must define in the global namespace */
# endif /* !_STLSOFT_NO_NAMESPACE */
#endif /* !_ATLSTL_NO_NAMESPACE */

/* ////////////////////////////////////////////////////////////////////// */

#endif /* !ATLSTL_INCL_ATLSTL_SHIMS_ACCESS_STRING_HPP_CCOMBSTR */

/* ///////////////////////////// end of file //////////////////////////// */

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