1/* 2 * Copyright (c) 1999 3 * Silicon Graphics Computer Systems, Inc. 4 * 5 * Copyright (c) 1999 6 * Boris Fomitchev 7 * 8 * This material is provided "as is", with absolutely no warranty expressed 9 * or implied. Any use is at your own risk. 10 * 11 * Permission to use or copy this software for any purpose is hereby granted 12 * without fee, provided the above notices are retained on all copies. 13 * Permission to modify the code and to distribute modified code is granted, 14 * provided the above notices are retained, and a notice that the code was 15 * modified is included with the above copyright notice. 16 * 17 */ 18#ifndef MESSAGE_FACETS_H 19#define MESSAGE_FACETS_H 20 21#include <string> 22#include <locale> 23#include <hash_map> 24 25#include "c_locale.h" 26 27_STLP_BEGIN_NAMESPACE 28_STLP_MOVE_TO_PRIV_NAMESPACE 29 30// Class _Catalog_locale_map. The reason for this is that, internally, 31// a message string is always a char*. We need a ctype facet to convert 32// a string to and from wchar_t, and the user is permitted to provide such 33// a facet when calling open(). 34 35struct _Catalog_locale_map { 36 _Catalog_locale_map() : M(0) {} 37 ~_Catalog_locale_map() { if (M) delete M; } 38 39 void insert(nl_catd_type key, const locale& L); 40 locale lookup(nl_catd_type key) const; 41 void erase(nl_catd_type key); 42 43 typedef hash_map<nl_catd_type, locale, hash<nl_catd_type>, equal_to<nl_catd_type>, 44 allocator<pair<_STLP_CONST nl_catd_type, locale> > > map_type; 45 map_type *M; 46 47private: // Invalidate copy constructor and assignment 48 _Catalog_locale_map(const _Catalog_locale_map&); 49 void operator=(const _Catalog_locale_map&); 50}; 51 52/* 53 * In glibc nl_catd type is void *, but messages_base::catalog is defined as int 54 * by ISO/IEC 14882; The int may be too short to store pointer on 64-bit platforms; 55 * Another problem, is that do_open() may return negative value to indicate that no 56 * catalog open---this case can't be represented with pointers. 57 * The class _Catalog_nl_catd_map intended to make relation between 58 * messages_base::catalog and nl_catd handler. 59 * 60 */ 61 62#if defined (_STLP_USE_GLIBC2_LOCALIZATION) 63# define _STLP_USE_NL_CATD_MAPPING 64#else 65/* If no mapping a message_base::catalog entry, int typedef according C++ Standard 22.2.7.1, 66 * has to be large enough to contain a nl_catd_type value. 67 */ 68_STLP_STATIC_ASSERT(sizeof(nl_catd_type) <= sizeof(int)) 69#endif 70 71class _STLP_CLASS_DECLSPEC _Catalog_nl_catd_map { 72public: 73 _Catalog_nl_catd_map() 74 {} 75 ~_Catalog_nl_catd_map() 76 {} 77 78 typedef hash_map<messages_base::catalog, nl_catd_type, hash<messages_base::catalog>, equal_to<messages_base::catalog>, 79 allocator<pair<_STLP_CONST messages_base::catalog, nl_catd_type> > > map_type; 80 typedef hash_map<nl_catd_type, messages_base::catalog, hash<nl_catd_type>, equal_to<nl_catd_type>, 81 allocator<pair<_STLP_CONST nl_catd_type, messages_base::catalog> > > rmap_type; 82 // typedef map<messages_base::catalog,nl_catd_type> map_type; 83 // typedef map<nl_catd_type,messages_base::catalog> rmap_type; 84 85 messages_base::catalog insert(nl_catd_type cat) 86#if !defined (_STLP_USE_NL_CATD_MAPPING) 87 { return (messages_base::catalog)cat; } 88#else 89 ; 90#endif 91 92 void erase(messages_base::catalog) 93#if !defined (_STLP_USE_NL_CATD_MAPPING) 94 {} 95#else 96 ; 97#endif 98 99 nl_catd_type operator [] ( messages_base::catalog cat ) 100#if !defined (_STLP_USE_NL_CATD_MAPPING) 101 { return cat; } 102#else 103 { return cat < 0 ? 0 : M[cat]; } 104#endif 105 106private: 107 _Catalog_nl_catd_map(const _Catalog_nl_catd_map&); 108 _Catalog_nl_catd_map& operator =(const _Catalog_nl_catd_map&); 109 110#if defined (_STLP_USE_NL_CATD_MAPPING) 111 map_type M; 112 rmap_type Mr; 113 static _STLP_VOLATILE __stl_atomic_t _count; 114#endif 115}; 116 117class _Messages { 118public: 119 typedef messages_base::catalog catalog; 120 121 _Messages(bool, const char *name); 122 _Messages(bool, _Locale_messages*); 123 124 catalog do_open(const string& __fn, const locale& __loc) const; 125 string do_get(catalog __c, int __set, int __msgid, 126 const string& __dfault) const; 127#if !defined (_STLP_NO_WCHAR_T) 128 wstring do_get(catalog __c, int __set, int __msgid, 129 const wstring& __dfault) const; 130#endif 131 void do_close(catalog __c) const; 132 ~_Messages(); 133 134private: 135 _Locale_messages* _M_message_obj; 136 _Catalog_locale_map* _M_map; 137 mutable _Catalog_nl_catd_map _M_cat; 138 139 //private definition to avoid warning (with ICL) 140 _Messages(const _Messages&); 141 _Messages& operator=(const _Messages&); 142}; 143 144_STLP_MOVE_TO_STD_NAMESPACE 145 146_STLP_END_NAMESPACE 147 148#endif 149 150// Local Variables: 151// mode:C++ 152// End: 153