120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
// -*- c++ -*-
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#ifndef _GLIBMM_UTILITY_H
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#define _GLIBMM_UTILITY_H
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/* $Id$ */
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/* Copyright 2002 The gtkmm Development Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <glib/gmacros.h>
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#include <glibmm/ustring.h>
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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extern "C" void g_free(void*);
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/* Occasionally, a struct variable has to be initialized after its definition,
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* i.e. when using structs as class member data. For convenience, the macro
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* GLIBMM_INITIALIZE_STRUCT(Var, Type) is provided. It even avoids creating
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* a temporary if the compiler is GCC.
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*/
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#if ((__GNUC__ >= 3) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)) && !defined(__STRICT_ANSI__)
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#define GLIBMM_INITIALIZE_STRUCT(Var, Type) __builtin_memset(&(Var), 0, sizeof(Type))
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#else
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#define GLIBMM_INITIALIZE_STRUCT(Var, Type) \
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G_STMT_START{ \
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Type const temp_initializer__ = { 0, }; \
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(Var) = temp_initializer__; \
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}G_STMT_END
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#endif /* ((__GNUC__ >= 3) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)) && !defined(__STRICT_ANSI__) */
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namespace Glib
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{
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// These are used by gtkmmproc-generated type conversions:
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// Helper to deal with memory allocated
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// by GLib functions in an exception-safe manner.
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template <typename T>
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class ScopedPtr
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{
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private:
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T* ptr_;
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ScopedPtr(const ScopedPtr<T>&);
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ScopedPtr<T>& operator=(const ScopedPtr<T>&);
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public:
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ScopedPtr() : ptr_ (0) {}
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explicit ScopedPtr(T* ptr) : ptr_ (ptr) {}
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~ScopedPtr() { g_free(ptr_); }
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T* get() const { return ptr_; }
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T** addr() { return &ptr_; }
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};
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// Removes the const nature of a ptr
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template <class T>
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inline T* unconst(const T* t)
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{ return const_cast<T*>(t); }
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// Convert const gchar* to ustring, while treating NULL as empty string.
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inline
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Glib::ustring convert_const_gchar_ptr_to_ustring(const char* str)
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{
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return (str) ? Glib::ustring(str) : Glib::ustring();
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}
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// Convert const gchar* to std::string, while treating NULL as empty string.
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inline
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std::string convert_const_gchar_ptr_to_stdstring(const char* str)
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{
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return (str) ? std::string(str) : std::string();
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}
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// Convert a non-const gchar* return value to ustring, freeing it too.
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inline
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Glib::ustring convert_return_gchar_ptr_to_ustring(char* str)
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{
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return (str) ? Glib::ustring(Glib::ScopedPtr<char>(str).get())
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: Glib::ustring();
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}
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// Convert a non-const gchar* return value to std::string, freeing it too.
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inline
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std::string convert_return_gchar_ptr_to_stdstring(char* str)
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{
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return (str) ? std::string(Glib::ScopedPtr<char>(str).get())
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: std::string();
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}
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// Append type_name to dest, while replacing special characters with '+'.
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void append_canonical_typename(std::string& dest, const char* type_name);
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} // namespace Glib
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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#endif /* _GLIBMM_UTILITY_H */
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