1 /* $NetBSD: gettext.h,v 1.4 2016/01/08 21:35:41 christos Exp $ */ 2 3 /* Convenience header for conditional use of GNU <libintl.h>. 4 Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2015 Free Software 5 Foundation, Inc. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU Lesser General Public License as published by 9 the Free Software Foundation; either version 2.1, or (at your option) 10 any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public License along 18 with this program; if not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef _LIBGETTEXT_H 21 #define _LIBGETTEXT_H 1 22 23 /* NLS can be disabled through the configure --disable-nls option. */ 24 #if ENABLE_NLS 25 26 /* Get declarations of GNU message catalog functions. */ 27 # include <libintl.h> 28 29 /* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by 30 the gettext() and ngettext() macros. This is an alternative to calling 31 textdomain(), and is useful for libraries. */ 32 # ifdef DEFAULT_TEXT_DOMAIN 33 # undef gettext 34 # define gettext(Msgid) \ 35 dgettext (DEFAULT_TEXT_DOMAIN, Msgid) 36 # undef ngettext 37 # define ngettext(Msgid1, Msgid2, N) \ 38 dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N) 39 # endif 40 41 #else 42 43 /* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which 44 chokes if dcgettext is defined as a macro. So include it now, to make 45 later inclusions of <locale.h> a NOP. We don't include <libintl.h> 46 as well because people using "gettext.h" will not include <libintl.h>, 47 and also including <libintl.h> would fail on SunOS 4, whereas <locale.h> 48 is OK. */ 49 #if defined(__sun) 50 # include <locale.h> 51 #endif 52 53 /* Many header files from the libstdc++ coming with g++ 3.3 or newer include 54 <libintl.h>, which chokes if dcgettext is defined as a macro. So include 55 it now, to make later inclusions of <libintl.h> a NOP. */ 56 #if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3) 57 # include <cstdlib> 58 # if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H 59 # include <libintl.h> 60 # endif 61 #endif 62 63 /* Disabled NLS. 64 The casts to 'const char *' serve the purpose of producing warnings 65 for invalid uses of the value returned from these functions. 66 On pre-ANSI systems without 'const', the config.h file is supposed to 67 contain "#define const". */ 68 # undef gettext 69 # define gettext(Msgid) ((const char *) (Msgid)) 70 # undef dgettext 71 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid)) 72 # undef dcgettext 73 # define dcgettext(Domainname, Msgid, Category) \ 74 ((void) (Category), dgettext (Domainname, Msgid)) 75 # undef ngettext 76 # define ngettext(Msgid1, Msgid2, N) \ 77 ((N) == 1 \ 78 ? ((void) (Msgid2), (const char *) (Msgid1)) \ 79 : ((void) (Msgid1), (const char *) (Msgid2))) 80 # undef dngettext 81 # define dngettext(Domainname, Msgid1, Msgid2, N) \ 82 ((void) (Domainname), ngettext (Msgid1, Msgid2, N)) 83 # undef dcngettext 84 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \ 85 ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N)) 86 # undef textdomain 87 # define textdomain(Domainname) ((const char *) (Domainname)) 88 # undef bindtextdomain 89 # define bindtextdomain(Domainname, Dirname) \ 90 ((void) (Domainname), (const char *) (Dirname)) 91 # undef bind_textdomain_codeset 92 # define bind_textdomain_codeset(Domainname, Codeset) \ 93 ((void) (Domainname), (const char *) (Codeset)) 94 95 #endif 96 97 /* Prefer gnulib's setlocale override over libintl's setlocale override. */ 98 #ifdef GNULIB_defined_setlocale 99 # undef setlocale 100 # define setlocale rpl_setlocale 101 #endif 102 103 /* A pseudo function call that serves as a marker for the automated 104 extraction of messages, but does not call gettext(). The run-time 105 translation is done at a different place in the code. 106 The argument, String, should be a literal string. Concatenated strings 107 and other string expressions won't work. 108 The macro's expansion is not parenthesized, so that it is suitable as 109 initializer for static 'char[]' or 'const char[]' variables. */ 110 #define gettext_noop(String) String 111 112 /* The separator between msgctxt and msgid in a .mo file. */ 113 #define GETTEXT_CONTEXT_GLUE "\004" 114 115 /* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a 116 MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be 117 short and rarely need to change. 118 The letter 'p' stands for 'particular' or 'special'. */ 119 #ifdef DEFAULT_TEXT_DOMAIN 120 # define pgettext(Msgctxt, Msgid) \ 121 pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES) 122 #else 123 # define pgettext(Msgctxt, Msgid) \ 124 pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES) 125 #endif 126 #define dpgettext(Domainname, Msgctxt, Msgid) \ 127 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES) 128 #define dcpgettext(Domainname, Msgctxt, Msgid, Category) \ 129 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category) 130 #ifdef DEFAULT_TEXT_DOMAIN 131 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \ 132 npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES) 133 #else 134 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \ 135 npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES) 136 #endif 137 #define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \ 138 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES) 139 #define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \ 140 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category) 141 142 #ifdef __GNUC__ 143 __inline 144 #else 145 #ifdef __cplusplus 146 inline 147 #endif 148 #endif 149 static const char * 150 pgettext_aux (const char *domain, 151 const char *msg_ctxt_id, const char *msgid, 152 int category) 153 { 154 const char *translation = dcgettext (domain, msg_ctxt_id, category); 155 if (translation == msg_ctxt_id) 156 return msgid; 157 else 158 return translation; 159 } 160 161 #ifdef __GNUC__ 162 __inline 163 #else 164 #ifdef __cplusplus 165 inline 166 #endif 167 #endif 168 static const char * 169 npgettext_aux (const char *domain, 170 const char *msg_ctxt_id, const char *msgid, 171 const char *msgid_plural, unsigned long int n, 172 int category) 173 { 174 const char *translation = 175 dcngettext (domain, msg_ctxt_id, msgid_plural, n, category); 176 if (translation == msg_ctxt_id || translation == msgid_plural) 177 return (n == 1 ? msgid : msgid_plural); 178 else 179 return translation; 180 } 181 182 /* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID 183 can be arbitrary expressions. But for string literals these macros are 184 less efficient than those above. */ 185 186 #include <string.h> 187 188 #if (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \ 189 /* || __STDC_VERSION__ >= 199901L */ ) 190 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1 191 #else 192 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0 193 #endif 194 195 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 196 #include <stdlib.h> 197 #endif 198 199 #define pgettext_expr(Msgctxt, Msgid) \ 200 dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES) 201 #define dpgettext_expr(Domainname, Msgctxt, Msgid) \ 202 dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES) 203 204 #ifdef __GNUC__ 205 __inline 206 #else 207 #ifdef __cplusplus 208 inline 209 #endif 210 #endif 211 static const char * 212 dcpgettext_expr (const char *domain, 213 const char *msgctxt, const char *msgid, 214 int category) 215 { 216 size_t msgctxt_len = strlen (msgctxt) + 1; 217 size_t msgid_len = strlen (msgid) + 1; 218 const char *translation; 219 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 220 char msg_ctxt_id[msgctxt_len + msgid_len]; 221 #else 222 char buf[1024]; 223 char *msg_ctxt_id = 224 (msgctxt_len + msgid_len <= sizeof (buf) 225 ? buf 226 : (char *) malloc (msgctxt_len + msgid_len)); 227 if (msg_ctxt_id != NULL) 228 #endif 229 { 230 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1); 231 msg_ctxt_id[msgctxt_len - 1] = '\004'; 232 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len); 233 translation = dcgettext (domain, msg_ctxt_id, category); 234 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 235 if (msg_ctxt_id != buf) 236 free (msg_ctxt_id); 237 #endif 238 if (translation != msg_ctxt_id) 239 return translation; 240 } 241 return msgid; 242 } 243 244 #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \ 245 dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES) 246 #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \ 247 dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES) 248 249 #ifdef __GNUC__ 250 __inline 251 #else 252 #ifdef __cplusplus 253 inline 254 #endif 255 #endif 256 static const char * 257 dcnpgettext_expr (const char *domain, 258 const char *msgctxt, const char *msgid, 259 const char *msgid_plural, unsigned long int n, 260 int category) 261 { 262 size_t msgctxt_len = strlen (msgctxt) + 1; 263 size_t msgid_len = strlen (msgid) + 1; 264 const char *translation; 265 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 266 char msg_ctxt_id[msgctxt_len + msgid_len]; 267 #else 268 char buf[1024]; 269 char *msg_ctxt_id = 270 (msgctxt_len + msgid_len <= sizeof (buf) 271 ? buf 272 : (char *) malloc (msgctxt_len + msgid_len)); 273 if (msg_ctxt_id != NULL) 274 #endif 275 { 276 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1); 277 msg_ctxt_id[msgctxt_len - 1] = '\004'; 278 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len); 279 translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category); 280 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 281 if (msg_ctxt_id != buf) 282 free (msg_ctxt_id); 283 #endif 284 if (!(translation == msg_ctxt_id || translation == msgid_plural)) 285 return translation; 286 } 287 return (n == 1 ? msgid : msgid_plural); 288 } 289 290 #endif /* _LIBGETTEXT_H */ 291