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1 /* |
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2 * Copyright (c) 1999 |
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3 * Silicon Graphics Computer Systems, Inc. |
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4 * |
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5 * Copyright (c) 1999 |
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6 * Boris Fomitchev |
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7 * |
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8 * This material is provided "as is", with absolutely no warranty expressed |
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9 * or implied. Any use is at your own risk. |
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10 * |
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11 * Permission to use or copy this software for any purpose is hereby granted |
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12 * without fee, provided the above notices are retained on all copies. |
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13 * Permission to modify the code and to distribute modified code is granted, |
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14 * provided the above notices are retained, and a notice that the code was |
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15 * modified is included with the above copyright notice. |
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16 * |
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17 */ |
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18 #ifndef MESSAGE_FACETS_H |
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19 #define MESSAGE_FACETS_H |
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20 |
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21 #include <string> |
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22 #include <locale> |
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23 #include <typeinfo> |
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24 #include <hash_map> |
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25 |
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26 #include "c_locale.h" |
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27 #include "acquire_release.h" |
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28 |
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29 _STLP_BEGIN_NAMESPACE |
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30 _STLP_MOVE_TO_PRIV_NAMESPACE |
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31 |
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32 // Class _Catalog_locale_map. The reason for this is that, internally, |
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33 // a message string is always a char*. We need a ctype facet to convert |
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34 // a string to and from wchar_t, and the user is permitted to provide such |
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35 // a facet when calling open(). |
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36 |
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37 struct _Catalog_locale_map { |
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38 _Catalog_locale_map() : M(0) {} |
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39 ~_Catalog_locale_map() { if (M) delete M; } |
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40 |
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41 void insert(nl_catd_type key, const locale& L); |
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42 locale lookup(nl_catd_type key) const; |
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43 void erase(nl_catd_type key); |
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44 |
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45 typedef hash_map<nl_catd_type, locale, hash<nl_catd_type>, equal_to<nl_catd_type> > map_type; |
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46 map_type *M; |
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47 |
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48 private: // Invalidate copy constructor and assignment |
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49 _Catalog_locale_map(const _Catalog_locale_map&); |
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50 void operator=(const _Catalog_locale_map&); |
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51 }; |
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52 |
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53 /* |
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54 * In glibc nl_catd type is void *, but messages_base::catalog is defined as int |
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55 * by ISO/IEC 14882; The int may be too short to store pointer on 64-bit platforms; |
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56 * Another problem, is that do_open() may return negative value to indicate that no |
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57 * catalog open---this case can't be represented with pointers. |
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58 * The class _Catalog_nl_catd_map intended to make relation between |
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59 * messages_base::catalog and nl_catd handler. |
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60 * |
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61 */ |
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62 |
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63 #if defined (_STLP_REAL_LOCALE_IMPLEMENTED) && (defined (_STLP_USE_GLIBC) && !defined (__CYGWIN__)) |
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64 # define _STLP_USE_NL_CATD_MAPPING |
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65 #else |
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66 /* If no mapping a message_base::catalog entry, int typedef according C++ Standard 22.2.7.1, |
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67 * has to be large enough to contain a nl_catd_type value. |
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68 */ |
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69 _STLP_STATIC_ASSERT(sizeof(nl_catd_type) <= sizeof(int)) |
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70 #endif |
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71 |
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72 class _STLP_CLASS_DECLSPEC _Catalog_nl_catd_map { |
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73 public: |
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74 _Catalog_nl_catd_map() |
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75 {} |
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76 ~_Catalog_nl_catd_map() |
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77 {} |
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78 |
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79 typedef hash_map<messages_base::catalog, nl_catd_type, hash<messages_base::catalog>, equal_to<messages_base::catalog> > map_type; |
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80 typedef hash_map<nl_catd_type, messages_base::catalog, hash<nl_catd_type>, equal_to<nl_catd_type> > rmap_type; |
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81 // typedef map<messages_base::catalog,nl_catd_type> map_type; |
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82 // typedef map<nl_catd_type,messages_base::catalog> rmap_type; |
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83 |
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84 messages_base::catalog insert(nl_catd_type cat) |
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85 #if !defined (_STLP_USE_NL_CATD_MAPPING) |
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86 { return (messages_base::catalog)cat; } |
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87 #else |
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88 ; |
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89 #endif |
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90 |
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91 void erase(messages_base::catalog) |
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92 #if !defined (_STLP_USE_NL_CATD_MAPPING) |
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93 {} |
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94 #else |
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95 ; |
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96 #endif |
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97 |
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98 nl_catd_type operator [] ( messages_base::catalog cat ) const |
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99 #if !defined (_STLP_USE_NL_CATD_MAPPING) |
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100 { return cat; } |
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101 #else |
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102 { return cat < 0 ? 0 : M[cat]; } |
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103 #endif |
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104 |
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105 private: |
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106 _Catalog_nl_catd_map(const _Catalog_nl_catd_map&); |
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107 _Catalog_nl_catd_map& operator =(const _Catalog_nl_catd_map&); |
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108 |
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109 #if defined (_STLP_USE_NL_CATD_MAPPING) |
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110 mutable map_type M; |
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111 mutable rmap_type Mr; |
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112 static _STLP_VOLATILE __stl_atomic_t _count; |
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113 #endif |
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114 }; |
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115 |
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116 class _STLP_CLASS_DECLSPEC _Messages { |
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117 public: |
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118 typedef messages_base::catalog catalog; |
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119 |
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120 _Messages(); |
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121 |
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122 virtual catalog do_open(const string& __fn, const locale& __loc) const; |
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123 virtual string do_get(catalog __c, int __set, int __msgid, |
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124 const string& __dfault) const; |
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125 #if !defined (_STLP_NO_WCHAR_T) |
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126 virtual wstring do_get(catalog __c, int __set, int __msgid, |
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127 const wstring& __dfault) const; |
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128 #endif |
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129 virtual void do_close(catalog __c) const; |
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130 virtual ~_Messages(); |
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131 bool _M_delete; |
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132 }; |
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133 |
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134 class _STLP_CLASS_DECLSPEC _Messages_impl : public _Messages { |
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135 public: |
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136 _Messages_impl(bool, _Locale_name_hint* hint = 0); |
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137 _Messages_impl(bool, _Locale_messages*); |
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138 |
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139 catalog do_open(const string& __fn, const locale& __loc) const; |
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140 string do_get(catalog __c, int __set, int __msgid, |
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141 const string& __dfault) const; |
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142 #if !defined (_STLP_NO_WCHAR_T) |
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143 wstring do_get(catalog __c, int __set, int __msgid, |
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144 const wstring& __dfault) const; |
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145 #endif |
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146 void do_close(catalog __c) const; |
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147 |
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148 ~_Messages_impl(); |
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149 |
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150 private: |
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151 _Locale_messages* _M_message_obj; |
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152 _Catalog_locale_map* _M_map; |
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153 mutable _Catalog_nl_catd_map _M_cat; |
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154 |
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155 //private definition to avoid warning (with ICL) |
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156 _Messages_impl(const _Messages_impl&); |
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157 _Messages_impl& operator=(const _Messages_impl&); |
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158 }; |
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159 |
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160 _STLP_MOVE_TO_STD_NAMESPACE |
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161 |
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162 _STLP_END_NAMESPACE |
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163 |
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164 #endif |
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165 |
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166 // Local Variables: |
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167 // mode:C++ |
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168 // End: |