1 | /* Declarations for internal libc locale interfaces |
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2 | Copyright (C) 1995, 96, 97, 98, 99,2000,2001 Free Software Foundation, Inc. |
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3 | This file is part of the GNU C Library. |
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4 | |
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5 | The GNU C Library is free software; you can redistribute it and/or |
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6 | modify it under the terms of the GNU Lesser General Public |
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7 | License as published by the Free Software Foundation; either |
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8 | version 2.1 of the License, or (at your option) any later version. |
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9 | |
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10 | The GNU C Library is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | Lesser General Public License for more details. |
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14 | |
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15 | You should have received a copy of the GNU Lesser General Public |
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16 | License along with the GNU C Library; if not, write to the Free |
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17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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18 | 02111-1307 USA. */ |
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19 | |
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20 | #ifndef _LOCALEINFO_H |
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21 | #define _LOCALEINFO_H 1 |
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22 | |
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23 | #include <stddef.h> |
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24 | #include <langinfo.h> |
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25 | #include <limits.h> |
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26 | #include <time.h> |
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27 | #include <stdint.h> |
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28 | #include <sys/types.h> |
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29 | |
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30 | /* This has to be changed whenever a new locale is defined. */ |
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31 | #define __LC_LAST 13 |
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32 | |
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33 | #include "loadinfo.h" /* For loaded_l10nfile definition. */ |
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34 | |
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35 | /* Magic number at the beginning of a locale data file for CATEGORY. */ |
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36 | #define LIMAGIC(category) ((unsigned int) (0x20000828 ^ (category))) |
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37 | |
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38 | /* Two special weight constants for the collation data. */ |
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39 | #define IGNORE_CHAR 2 |
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40 | |
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41 | /* We use a special value for the usage counter in `locale_data' to |
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42 | signal that this data must never be removed anymore. */ |
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43 | #define MAX_USAGE_COUNT (UINT_MAX - 1) |
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44 | #define UNDELETABLE UINT_MAX |
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45 | |
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46 | /* Structure describing locale data in core for a category. */ |
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47 | struct locale_data |
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48 | { |
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49 | const char *name; |
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50 | const char *filedata; /* Region mapping the file data. */ |
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51 | off_t filesize; /* Size of the file (and the region). */ |
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52 | int mmaped; /* If nonzero the data is mmaped. */ |
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53 | |
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54 | unsigned int usage_count; /* Counter for users. */ |
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55 | |
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56 | int use_translit; /* Nonzero if the mb*towv*() and wc*tomb() |
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57 | functions should use transliteration. */ |
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58 | const char *options; /* Extra options from the locale name, |
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59 | not used in the path to the locale data. */ |
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60 | |
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61 | unsigned int nstrings; /* Number of strings below. */ |
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62 | union locale_data_value |
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63 | { |
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64 | const uint32_t *wstr; |
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65 | const char *string; |
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66 | unsigned int word; |
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67 | } |
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68 | values __flexarr; /* Items, usually pointers into `filedata'. */ |
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69 | }; |
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70 | |
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71 | /* We know three kinds of collation sorting rules. */ |
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72 | enum coll_sort_rule |
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73 | { |
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74 | illegal_0__, |
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75 | sort_forward, |
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76 | sort_backward, |
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77 | illegal_3__, |
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78 | sort_position, |
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79 | sort_forward_position, |
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80 | sort_backward_position, |
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81 | sort_mask |
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82 | }; |
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83 | |
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84 | /* We can map the types of the entries into a few categories. */ |
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85 | enum value_type |
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86 | { |
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87 | none, |
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88 | string, |
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89 | stringarray, |
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90 | byte, |
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91 | bytearray, |
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92 | word, |
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93 | stringlist, |
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94 | wordarray, |
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95 | wstring, |
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96 | wstringarray, |
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97 | wstringlist |
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98 | }; |
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99 | |
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100 | |
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101 | /* Definitions for `era' information from LC_TIME. */ |
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102 | #define ERA_NAME_FORMAT_MEMBERS 4 |
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103 | #define ERA_M_NAME 0 |
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104 | #define ERA_M_FORMAT 1 |
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105 | #define ERA_W_NAME 2 |
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106 | #define ERA_W_FORMAT 3 |
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107 | |
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108 | |
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109 | /* Structure to access `era' information from LC_TIME. */ |
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110 | struct era_entry |
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111 | { |
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112 | uint32_t direction; /* Contains '+' or '-'. */ |
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113 | int32_t offset; |
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114 | int32_t start_date[3]; |
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115 | int32_t stop_date[3]; |
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116 | const char *era_name; |
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117 | const char *era_format; |
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118 | const wchar_t *era_wname; |
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119 | const wchar_t *era_wformat; |
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120 | int absolute_direction; |
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121 | /* absolute direction: |
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122 | +1 indicates that year number is higher in the future. (like A.D.) |
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123 | -1 indicates that year number is higher in the past. (like B.C.) */ |
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124 | }; |
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125 | |
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126 | |
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127 | /* LC_CTYPE specific: |
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128 | Hardwired indices for standard wide character translation mappings. */ |
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129 | enum |
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130 | { |
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131 | __TOW_toupper = 0, |
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132 | __TOW_tolower = 1 |
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133 | }; |
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134 | |
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135 | |
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136 | /* LC_CTYPE specific: |
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137 | Access a wide character class with a single character index. |
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138 | _ISCTYPE (c, desc) = iswctype (btowc (c), desc). |
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139 | c must be an `unsigned char'. desc must be a nonzero wctype_t. */ |
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140 | #define _ISCTYPE(c, desc) \ |
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141 | (((((const uint32_t *) (desc)) - 8)[(c) >> 5] >> ((c) & 0x1f)) & 1) |
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142 | |
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143 | |
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144 | /* For each category declare the variable for the current locale data. */ |
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145 | #define DEFINE_CATEGORY(category, category_name, items, a) \ |
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146 | extern struct locale_data *_nl_current_##category; |
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147 | #include "categories.def" |
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148 | #undef DEFINE_CATEGORY |
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149 | |
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150 | extern const char *const _nl_category_names[__LC_LAST]; |
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151 | extern const size_t _nl_category_name_sizes[__LC_LAST]; |
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152 | extern struct locale_data * *const _nl_current[__LC_LAST]; |
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153 | |
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154 | /* Extract the current CATEGORY locale's string for ITEM. */ |
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155 | #define _NL_CURRENT(category, item) \ |
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156 | (_nl_current_##category->values[_NL_ITEM_INDEX (item)].string) |
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157 | |
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158 | /* Extract the current CATEGORY locale's string for ITEM. */ |
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159 | #define _NL_CURRENT_WSTR(category, item) \ |
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160 | ((wchar_t *) (_nl_current_##category->values[_NL_ITEM_INDEX (item)].wstr)) |
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161 | |
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162 | /* Extract the current CATEGORY locale's word for ITEM. */ |
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163 | #define _NL_CURRENT_WORD(category, item) \ |
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164 | (_nl_current_##category->values[_NL_ITEM_INDEX (item)].word) |
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165 | |
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166 | /* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY. */ |
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167 | #define _NL_CURRENT_DEFINE(category) \ |
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168 | extern struct locale_data _nl_C_##category; \ |
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169 | struct locale_data *_nl_current_##category = &_nl_C_##category |
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170 | |
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171 | /* Load the locale data for CATEGORY from the file specified by *NAME. |
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172 | If *NAME is "", use environment variables as specified by POSIX, |
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173 | and fill in *NAME with the actual name used. The directories |
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174 | listed in LOCALE_PATH are searched for the locale files. */ |
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175 | extern struct locale_data *_nl_find_locale (const char *locale_path, |
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176 | size_t locale_path_len, |
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177 | int category, const char **name); |
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178 | |
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179 | /* Try to load the file described by FILE. */ |
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180 | extern void _nl_load_locale (struct loaded_l10nfile *file, int category); |
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181 | |
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182 | /* Free all resource. */ |
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183 | extern void _nl_unload_locale (struct locale_data *locale); |
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184 | |
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185 | /* Free the locale and give back all memory if the usage count is one. */ |
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186 | extern void _nl_remove_locale (int locale, struct locale_data *data); |
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187 | |
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188 | |
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189 | /* Return `era' entry which corresponds to TP. Used in strftime. */ |
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190 | extern struct era_entry *_nl_get_era_entry (const struct tm *tp); |
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191 | |
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192 | /* Return `era' cnt'th entry . Used in strptime. */ |
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193 | extern struct era_entry *_nl_select_era_entry (int cnt); |
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194 | |
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195 | /* Return `alt_digit' which corresponds to NUMBER. Used in strftime. */ |
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196 | extern const char *_nl_get_alt_digit (unsigned int number); |
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197 | |
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198 | /* Similar, but now for wide characters. */ |
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199 | extern const wchar_t *_nl_get_walt_digit (unsigned int number); |
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200 | |
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201 | /* Parse string as alternative digit and return numeric value. */ |
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202 | extern int _nl_parse_alt_digit (const char **strp); |
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203 | |
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204 | /* Postload processing. */ |
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205 | extern void _nl_postload_ctype (void); |
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206 | extern void _nl_postload_time (void); |
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207 | |
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208 | |
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209 | #endif /* localeinfo.h */ |
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