1 | /* Handle list of needed message catalogs |
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2 | Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
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3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. |
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4 | |
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5 | This program is free software; you can redistribute it and/or modify |
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6 | it under the terms of the GNU General Public License as published by |
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7 | the Free Software Foundation; either version 2, or (at your option) |
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8 | any later version. |
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9 | |
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10 | This program 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 |
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13 | GNU 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 General Public License |
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16 | along with this program; if not, write to the Free Software Foundation, |
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17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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18 | |
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19 | #ifdef HAVE_CONFIG_H |
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20 | # include <config.h> |
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21 | #endif |
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22 | |
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23 | |
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24 | #if defined HAVE_STRING_H || defined _LIBC |
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25 | # ifndef _GNU_SOURCE |
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26 | # define _GNU_SOURCE 1 |
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27 | # endif |
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28 | # include <string.h> |
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29 | #else |
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30 | # include <strings.h> |
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31 | # ifndef memcpy |
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32 | # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) |
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33 | # endif |
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34 | #endif |
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35 | #if !HAVE_STRCHR && !defined _LIBC |
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36 | # ifndef strchr |
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37 | # define strchr index |
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38 | # endif |
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39 | #endif |
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40 | |
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41 | #if defined _LIBC || defined HAVE_ARGZ_H |
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42 | # include <argz.h> |
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43 | #endif |
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44 | #include <ctype.h> |
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45 | #include <sys/types.h> |
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46 | |
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47 | #if defined STDC_HEADERS || defined _LIBC |
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48 | # include <stdlib.h> |
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49 | #endif |
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50 | |
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51 | #include "loadinfo.h" |
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52 | |
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53 | /* On some strange systems still no definition of NULL is found. Sigh! */ |
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54 | #ifndef NULL |
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55 | # if defined __STDC__ && __STDC__ |
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56 | # define NULL ((void *) 0) |
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57 | # else |
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58 | # define NULL 0 |
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59 | # endif |
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60 | #endif |
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61 | |
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62 | /* @@ end of prolog @@ */ |
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63 | |
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64 | #ifdef _LIBC |
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65 | /* Rename the non ANSI C functions. This is required by the standard |
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66 | because some ANSI C functions will require linking with this object |
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67 | file and the name space must not be polluted. */ |
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68 | # ifndef stpcpy |
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69 | # define stpcpy(dest, src) __stpcpy(dest, src) |
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70 | # endif |
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71 | #else |
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72 | # ifndef HAVE_STPCPY |
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73 | static char *stpcpy PARAMS ((char *dest, const char *src)); |
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74 | # endif |
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75 | #endif |
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76 | |
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77 | /* Define function which are usually not available. */ |
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78 | |
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79 | #if !defined _LIBC && !defined HAVE___ARGZ_COUNT |
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80 | /* Returns the number of strings in ARGZ. */ |
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81 | static size_t argz_count__ PARAMS ((const char *argz, size_t len)); |
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82 | |
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83 | static size_t |
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84 | argz_count__ (argz, len) |
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85 | const char *argz; |
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86 | size_t len; |
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87 | { |
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88 | size_t count = 0; |
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89 | while (len > 0) |
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90 | { |
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91 | size_t part_len = strlen (argz); |
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92 | argz += part_len + 1; |
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93 | len -= part_len + 1; |
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94 | count++; |
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95 | } |
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96 | return count; |
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97 | } |
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98 | # undef __argz_count |
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99 | # define __argz_count(argz, len) argz_count__ (argz, len) |
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100 | #endif /* !_LIBC && !HAVE___ARGZ_COUNT */ |
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101 | |
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102 | #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY |
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103 | /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's |
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104 | except the last into the character SEP. */ |
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105 | static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep)); |
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106 | |
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107 | static void |
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108 | argz_stringify__ (argz, len, sep) |
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109 | char *argz; |
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110 | size_t len; |
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111 | int sep; |
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112 | { |
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113 | while (len > 0) |
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114 | { |
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115 | size_t part_len = strlen (argz); |
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116 | argz += part_len; |
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117 | len -= part_len + 1; |
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118 | if (len > 0) |
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119 | *argz++ = sep; |
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120 | } |
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121 | } |
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122 | # undef __argz_stringify |
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123 | # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep) |
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124 | #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */ |
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125 | |
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126 | #if !defined _LIBC && !defined HAVE___ARGZ_NEXT |
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127 | static char *argz_next__ PARAMS ((char *argz, size_t argz_len, |
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128 | const char *entry)); |
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129 | |
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130 | static char * |
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131 | argz_next__ (argz, argz_len, entry) |
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132 | char *argz; |
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133 | size_t argz_len; |
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134 | const char *entry; |
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135 | { |
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136 | if (entry) |
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137 | { |
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138 | if (entry < argz + argz_len) |
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139 | entry = strchr (entry, '\0') + 1; |
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140 | |
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141 | return entry >= argz + argz_len ? NULL : (char *) entry; |
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142 | } |
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143 | else |
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144 | if (argz_len > 0) |
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145 | return argz; |
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146 | else |
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147 | return 0; |
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148 | } |
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149 | # undef __argz_next |
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150 | # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry) |
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151 | #endif /* !_LIBC && !HAVE___ARGZ_NEXT */ |
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152 | |
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153 | |
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154 | /* Return number of bits set in X. */ |
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155 | static int pop PARAMS ((int x)); |
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156 | |
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157 | static inline int |
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158 | pop (x) |
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159 | int x; |
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160 | { |
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161 | /* We assume that no more than 16 bits are used. */ |
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162 | x = ((x & ~0x5555) >> 1) + (x & 0x5555); |
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163 | x = ((x & ~0x3333) >> 2) + (x & 0x3333); |
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164 | x = ((x >> 4) + x) & 0x0f0f; |
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165 | x = ((x >> 8) + x) & 0xff; |
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166 | |
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167 | return x; |
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168 | } |
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169 | |
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170 | |
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171 | struct loaded_l10nfile * |
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172 | _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, |
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173 | territory, codeset, normalized_codeset, modifier, special, |
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174 | sponsor, revision, filename, do_allocate) |
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175 | struct loaded_l10nfile **l10nfile_list; |
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176 | const char *dirlist; |
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177 | size_t dirlist_len; |
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178 | int mask; |
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179 | const char *language; |
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180 | const char *territory; |
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181 | const char *codeset; |
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182 | const char *normalized_codeset; |
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183 | const char *modifier; |
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184 | const char *special; |
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185 | const char *sponsor; |
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186 | const char *revision; |
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187 | const char *filename; |
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188 | int do_allocate; |
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189 | { |
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190 | char *abs_filename; |
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191 | struct loaded_l10nfile *last = NULL; |
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192 | struct loaded_l10nfile *retval; |
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193 | char *cp; |
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194 | size_t entries; |
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195 | int cnt; |
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196 | |
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197 | /* Allocate room for the full file name. */ |
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198 | abs_filename = (char *) malloc (dirlist_len |
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199 | + strlen (language) |
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200 | + ((mask & TERRITORY) != 0 |
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201 | ? strlen (territory) + 1 : 0) |
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202 | + ((mask & XPG_CODESET) != 0 |
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203 | ? strlen (codeset) + 1 : 0) |
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204 | + ((mask & XPG_NORM_CODESET) != 0 |
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205 | ? strlen (normalized_codeset) + 1 : 0) |
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206 | + (((mask & XPG_MODIFIER) != 0 |
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207 | || (mask & CEN_AUDIENCE) != 0) |
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208 | ? strlen (modifier) + 1 : 0) |
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209 | + ((mask & CEN_SPECIAL) != 0 |
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210 | ? strlen (special) + 1 : 0) |
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211 | + (((mask & CEN_SPONSOR) != 0 |
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212 | || (mask & CEN_REVISION) != 0) |
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213 | ? (1 + ((mask & CEN_SPONSOR) != 0 |
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214 | ? strlen (sponsor) + 1 : 0) |
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215 | + ((mask & CEN_REVISION) != 0 |
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216 | ? strlen (revision) + 1 : 0)) : 0) |
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217 | + 1 + strlen (filename) + 1); |
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218 | |
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219 | if (abs_filename == NULL) |
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220 | return NULL; |
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221 | |
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222 | retval = NULL; |
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223 | last = NULL; |
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224 | |
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225 | /* Construct file name. */ |
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226 | memcpy (abs_filename, dirlist, dirlist_len); |
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227 | __argz_stringify (abs_filename, dirlist_len, ':'); |
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228 | cp = abs_filename + (dirlist_len - 1); |
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229 | *cp++ = '/'; |
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230 | cp = stpcpy (cp, language); |
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231 | |
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232 | if ((mask & TERRITORY) != 0) |
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233 | { |
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234 | *cp++ = '_'; |
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235 | cp = stpcpy (cp, territory); |
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236 | } |
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237 | if ((mask & XPG_CODESET) != 0) |
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238 | { |
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239 | *cp++ = '.'; |
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240 | cp = stpcpy (cp, codeset); |
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241 | } |
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242 | if ((mask & XPG_NORM_CODESET) != 0) |
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243 | { |
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244 | *cp++ = '.'; |
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245 | cp = stpcpy (cp, normalized_codeset); |
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246 | } |
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247 | if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0) |
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248 | { |
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249 | /* This component can be part of both syntaces but has different |
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250 | leading characters. For CEN we use `+', else `@'. */ |
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251 | *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@'; |
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252 | cp = stpcpy (cp, modifier); |
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253 | } |
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254 | if ((mask & CEN_SPECIAL) != 0) |
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255 | { |
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256 | *cp++ = '+'; |
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257 | cp = stpcpy (cp, special); |
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258 | } |
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259 | if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0) |
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260 | { |
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261 | *cp++ = ','; |
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262 | if ((mask & CEN_SPONSOR) != 0) |
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263 | cp = stpcpy (cp, sponsor); |
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264 | if ((mask & CEN_REVISION) != 0) |
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265 | { |
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266 | *cp++ = '_'; |
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267 | cp = stpcpy (cp, revision); |
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268 | } |
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269 | } |
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270 | |
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271 | *cp++ = '/'; |
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272 | stpcpy (cp, filename); |
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273 | |
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274 | /* Look in list of already loaded domains whether it is already |
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275 | available. */ |
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276 | last = NULL; |
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277 | for (retval = *l10nfile_list; retval != NULL; retval = retval->next) |
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278 | if (retval->filename != NULL) |
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279 | { |
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280 | int compare = strcmp (retval->filename, abs_filename); |
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281 | if (compare == 0) |
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282 | /* We found it! */ |
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283 | break; |
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284 | if (compare < 0) |
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285 | { |
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286 | /* It's not in the list. */ |
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287 | retval = NULL; |
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288 | break; |
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289 | } |
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290 | |
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291 | last = retval; |
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292 | } |
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293 | |
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294 | if (retval != NULL || do_allocate == 0) |
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295 | { |
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296 | free (abs_filename); |
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297 | return retval; |
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298 | } |
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299 | |
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300 | retval = (struct loaded_l10nfile *) |
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301 | malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len) |
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302 | * (1 << pop (mask)) |
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303 | * sizeof (struct loaded_l10nfile *))); |
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304 | if (retval == NULL) |
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305 | return NULL; |
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306 | |
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307 | retval->filename = abs_filename; |
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308 | retval->decided = (__argz_count (dirlist, dirlist_len) != 1 |
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309 | || ((mask & XPG_CODESET) != 0 |
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310 | && (mask & XPG_NORM_CODESET) != 0)); |
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311 | retval->data = NULL; |
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312 | |
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313 | if (last == NULL) |
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314 | { |
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315 | retval->next = *l10nfile_list; |
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316 | *l10nfile_list = retval; |
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317 | } |
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318 | else |
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319 | { |
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320 | retval->next = last->next; |
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321 | last->next = retval; |
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322 | } |
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323 | |
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324 | entries = 0; |
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325 | /* If the DIRLIST is a real list the RETVAL entry corresponds not to |
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326 | a real file. So we have to use the DIRLIST separation mechanism |
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327 | of the inner loop. */ |
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328 | cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask; |
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329 | for (; cnt >= 0; --cnt) |
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330 | if ((cnt & ~mask) == 0 |
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331 | && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0) |
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332 | && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0)) |
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333 | { |
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334 | /* Iterate over all elements of the DIRLIST. */ |
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335 | char *dir = NULL; |
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336 | |
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337 | while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir)) |
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338 | != NULL) |
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339 | retval->successor[entries++] |
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340 | = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt, |
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341 | language, territory, codeset, |
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342 | normalized_codeset, modifier, special, |
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343 | sponsor, revision, filename, 1); |
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344 | } |
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345 | retval->successor[entries] = NULL; |
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346 | |
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347 | return retval; |
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348 | } |
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349 | |
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350 | /* Normalize codeset name. There is no standard for the codeset |
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351 | names. Normalization allows the user to use any of the common |
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352 | names. */ |
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353 | const char * |
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354 | _nl_normalize_codeset (codeset, name_len) |
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355 | const char *codeset; |
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356 | size_t name_len; |
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357 | { |
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358 | int len = 0; |
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359 | int only_digit = 1; |
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360 | char *retval; |
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361 | char *wp; |
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362 | size_t cnt; |
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363 | |
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364 | for (cnt = 0; cnt < name_len; ++cnt) |
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365 | if (isalnum (codeset[cnt])) |
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366 | { |
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367 | ++len; |
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368 | |
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369 | if (isalpha (codeset[cnt])) |
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370 | only_digit = 0; |
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371 | } |
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372 | |
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373 | retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1); |
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374 | |
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375 | if (retval != NULL) |
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376 | { |
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377 | if (only_digit) |
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378 | wp = stpcpy (retval, "iso"); |
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379 | else |
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380 | wp = retval; |
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381 | |
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382 | for (cnt = 0; cnt < name_len; ++cnt) |
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383 | if (isalpha (codeset[cnt])) |
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384 | *wp++ = tolower (codeset[cnt]); |
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385 | else if (isdigit (codeset[cnt])) |
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386 | *wp++ = codeset[cnt]; |
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387 | |
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388 | *wp = '\0'; |
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389 | } |
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390 | |
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391 | return (const char *) retval; |
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392 | } |
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393 | |
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394 | |
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395 | /* @@ begin of epilog @@ */ |
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396 | |
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397 | /* We don't want libintl.a to depend on any other library. So we |
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398 | avoid the non-standard function stpcpy. In GNU C Library this |
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399 | function is available, though. Also allow the symbol HAVE_STPCPY |
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400 | to be defined. */ |
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401 | #if !_LIBC && !HAVE_STPCPY |
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402 | static char * |
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403 | stpcpy (dest, src) |
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404 | char *dest; |
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405 | const char *src; |
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406 | { |
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407 | while ((*dest++ = *src++) != '\0') |
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408 | /* Do nothing. */ ; |
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409 | return dest - 1; |
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410 | } |
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411 | #endif |
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