# gettext.h

    00001 /* Convenience header for conditional use of GNU <libintl.h>.
    00002    Copyright (C) 1995-1998, 2000-2002, 2004-2006 Free Software Foundation, Inc.
    00003
    00004    This program is free software; you can redistribute it and/or modify it
    00005    under the terms of the GNU General Public License as published
    00006    by the Free Software Foundation; either version 2, or (at your option)
    00007    any later version.
    00008
    00009    This program is distributed in the hope that it will be useful,
    00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012    Library General Public License for more details.
    00013
    00014    You should have received a copy of the GNU General Public
    00015    License along with this program; if not, write to the Free Software
    00016    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
    00017    USA.  */
    00018
    00019 #ifndef _LIBGETTEXT_H
    00020 #define _LIBGETTEXT_H 1
    00021
    00022 /* NLS can be disabled through the configure --disable-nls option.  */
    00023 #if ENABLE_NLS
    00024
    00025 /* Get declarations of GNU message catalog functions.  */
    00026 # include <libintl.h>
    00027
    00028 /* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
    00029    the gettext() and ngettext() macros.  This is an alternative to calling
    00030    textdomain(), and is useful for libraries.  */
    00031 # ifdef DEFAULT_TEXT_DOMAIN
    00032 #  undef gettext
    00033 #  define gettext(Msgid) \
    00034      dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
    00035 #  undef ngettext
    00036 #  define ngettext(Msgid1, Msgid2, N) \
    00037      dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
    00038 # endif
    00039
    00040 #else
    00041
    00042 /* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
    00043    chokes if dcgettext is defined as a macro.  So include it now, to make
    00044    later inclusions of <locale.h> a NOP.  We don't include <libintl.h>
    00045    as well because people using "gettext.h" will not include <libintl.h>,
    00046    and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
    00047    is OK.  */
    00048 #if defined(__sun)
    00049 # include <locale.h>
    00050 #endif
    00051
    00052 /* Many header files from the libstdc++ coming with g++ 3.3 or newer include
    00053    <libintl.h>, which chokes if dcgettext is defined as a macro.  So include
    00054    it now, to make later inclusions of <libintl.h> a NOP.  */
    00055 #if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
    00056 # include <cstdlib>
    00057 # if (__GLIBC__ >= 2) || _GLIBCXX_HAVE_LIBINTL_H
    00058 #  include <libintl.h>
    00059 # endif
    00060 #endif
    00061
    00062 /* Disabled NLS.
    00063    The casts to 'const char *' serve the purpose of producing warnings
    00064    for invalid uses of the value returned from these functions.
    00065    On pre-ANSI systems without 'const', the config.h file is supposed to
    00066    contain "#define const".  */
    00067 # define gettext(Msgid) ((const char *) (Msgid))
    00068 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
    00069 # define dcgettext(Domainname, Msgid, Category) \
    00070     ((void) (Category), dgettext (Domainname, Msgid))
    00071 # define ngettext(Msgid1, Msgid2, N) \
    00072     ((N) == 1 \
    00073      ? ((void) (Msgid2), (const char *) (Msgid1)) \
    00074      : ((void) (Msgid1), (const char *) (Msgid2)))
    00075 # define dngettext(Domainname, Msgid1, Msgid2, N) \
    00076     ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
    00077 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
    00078     ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
    00079 # define textdomain(Domainname) ((const char *) (Domainname))
    00080 # define bindtextdomain(Domainname, Dirname) \
    00081     ((void) (Domainname), (const char *) (Dirname))
    00082 # define bind_textdomain_codeset(Domainname, Codeset) \
    00083     ((void) (Domainname), (const char *) (Codeset))
    00084
    00085 #endif
    00086
    00087 /* A pseudo function call that serves as a marker for the automated
    00088    extraction of messages, but does not call gettext().  The run-time
    00089    translation is done at a different place in the code.
    00090    The argument, String, should be a literal string.  Concatenated strings
    00091    and other string expressions won't work.
    00092    The macro's expansion is not parenthesized, so that it is suitable as
    00093    initializer for static 'char[]' or 'const char[]' variables.  */
    00094 #define gettext_noop(String) String
    00095
    00096 /* The separator between msgctxt and msgid in a .mo file.  */
    00097 #define GETTEXT_CONTEXT_GLUE "\004"
    00098
    00099 /* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
    00100    MSGID.  MSGCTXT and MSGID must be string literals.  MSGCTXT should be
    00101    short and rarely need to change.
    00102    The letter 'p' stands for 'particular' or 'special'.  */
    00103 #ifdef DEFAULT_TEXT_DOMAIN
    00104 # define pgettext(Msgctxt, Msgid) \
    00105    pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
    00106 #else
    00107 # define pgettext(Msgctxt, Msgid) \
    00108    pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
    00109 #endif
    00110 #define dpgettext(Domainname, Msgctxt, Msgid) \
    00111   pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
    00112 #define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
    00113   pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
    00114 #ifdef DEFAULT_TEXT_DOMAIN
    00115 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
    00116    npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
    00117 #else
    00118 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
    00119    npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
    00120 #endif
    00121 #define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
    00122   npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
    00123 #define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
    00124   npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
    00125
    00126 #ifdef __GNUC__
    00127 __inline
    00128 #else
    00129 #ifdef __cplusplus
    00130 inline
    00131 #endif
    00132 #endif
    00133 static const char *
    00134 pgettext_aux (const char *domain,
    00135               const char *msg_ctxt_id, const char *msgid,
    00136               int category)
    00137 {
    00138   const char *translation = dcgettext (domain, msg_ctxt_id, category);
    00139   if (translation == msg_ctxt_id)
    00140     return msgid;
    00141   else
    00142     return translation;
    00143 }
    00144
    00145 #ifdef __GNUC__
    00146 __inline
    00147 #else
    00148 #ifdef __cplusplus
    00149 inline
    00150 #endif
    00151 #endif
    00152 static const char *
    00153 npgettext_aux (const char *domain,
    00154                const char *msg_ctxt_id, const char *msgid,
    00155                const char *msgid_plural, unsigned long int n,
    00156                int category)
    00157 {
    00158   const char *translation =
    00159     dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
    00160   if (translation == msg_ctxt_id || translation == msgid_plural)
    00161     return (n == 1 ? msgid : msgid_plural);
    00162   else
    00163     return translation;
    00164 }
    00165
    00166 /* The same thing extended for non-constant arguments.  Here MSGCTXT and MSGID
    00167    can be arbitrary expressions.  But for string literals these macros are
    00168    less efficient than those above.  */
    00169
    00170 #include <string.h>
    00171
    00172 #define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
    00173   (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
    00174    /* || __STDC_VERSION__ >= 199901L */ )
    00175
    00176 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
    00177 #include <stdlib.h>
    00178 #endif
    00179
    00180 #define pgettext_expr(Msgctxt, Msgid) \
    00181   dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
    00182 #define dpgettext_expr(Domainname, Msgctxt, Msgid) \
    00183   dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
    00184
    00185 #ifdef __GNUC__
    00186 __inline
    00187 #else
    00188 #ifdef __cplusplus
    00189 inline
    00190 #endif
    00191 #endif
    00192 static const char *
    00193 dcpgettext_expr (const char *domain,
    00194                  const char *msgctxt, const char *msgid,
    00195                  int category)
    00196 {
    00197   size_t msgctxt_len = strlen (msgctxt) + 1;
    00198   size_t msgid_len = strlen (msgid) + 1;
    00199   const char *translation;
    00200 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
    00201   char msg_ctxt_id[msgctxt_len + msgid_len];
    00202 #else
    00203   char buf[1024];
    00204   char *msg_ctxt_id =
    00205     (msgctxt_len + msgid_len <= sizeof (buf)
    00206      ? buf
    00207      : (char *) malloc (msgctxt_len + msgid_len));
    00208   if (msg_ctxt_id != NULL)
    00209 #endif
    00210     {
    00211       memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
    00212       msg_ctxt_id[msgctxt_len - 1] = '\004';
    00213       memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
    00214       translation = dcgettext (domain, msg_ctxt_id, category);
    00215 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
    00216       if (msg_ctxt_id != buf)
    00217         free (msg_ctxt_id);
    00218 #endif
    00219       if (translation != msg_ctxt_id)
    00220         return translation;
    00221     }
    00222   return msgid;
    00223 }
    00224
    00225 #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
    00226   dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
    00227 #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
    00228   dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
    00229
    00230 #ifdef __GNUC__
    00231 __inline
    00232 #else
    00233 #ifdef __cplusplus
    00234 inline
    00235 #endif
    00236 #endif
    00237 static const char *
    00238 dcnpgettext_expr (const char *domain,
    00239                   const char *msgctxt, const char *msgid,
    00240                   const char *msgid_plural, unsigned long int n,
    00241                   int category)
    00242 {
    00243   size_t msgctxt_len = strlen (msgctxt) + 1;
    00244   size_t msgid_len = strlen (msgid) + 1;
    00245   const char *translation;
    00246 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
    00247   char msg_ctxt_id[msgctxt_len + msgid_len];
    00248 #else
    00249   char buf[1024];
    00250   char *msg_ctxt_id =
    00251     (msgctxt_len + msgid_len <= sizeof (buf)
    00252      ? buf
    00253      : (char *) malloc (msgctxt_len + msgid_len));
    00254   if (msg_ctxt_id != NULL)
    00255 #endif
    00256     {
    00257       memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
    00258       msg_ctxt_id[msgctxt_len - 1] = '\004';
    00259       memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
    00260       translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
    00261 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
    00262       if (msg_ctxt_id != buf)
    00263         free (msg_ctxt_id);
    00264 #endif
    00265       if (!(translation == msg_ctxt_id || translation == msgid_plural))
    00266         return translation;
    00267     }
    00268   return (n == 1 ? msgid : msgid_plural);
    00269 }
    00270
    00271 #endif /* _LIBGETTEXT_H */