300 lines
10 KiB
C
300 lines
10 KiB
C
/* Convenience header for conditional use of GNU <libintl.h>.
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Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2023 Free Software
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Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _LIBGETTEXT_H
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#define _LIBGETTEXT_H 1
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/* NLS can be disabled through the configure --disable-nls option
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or through "#define ENABLE NLS 0" before including this file. */
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#if defined ENABLE_NLS && ENABLE_NLS
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/* Get declarations of GNU message catalog functions. */
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# include <libintl.h>
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/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
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the gettext() and ngettext() macros. This is an alternative to calling
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textdomain(), and is useful for libraries. */
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# ifdef DEFAULT_TEXT_DOMAIN
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# undef gettext
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# define gettext(Msgid) \
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dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
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# undef ngettext
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# define ngettext(Msgid1, Msgid2, N) \
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dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
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# endif
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#else
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/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
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chokes if dcgettext is defined as a macro. So include it now, to make
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later inclusions of <locale.h> a NOP. We don't include <libintl.h>
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as well because people using "gettext.h" will not include <libintl.h>,
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and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
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is OK. */
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#if defined(__sun)
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# include <locale.h>
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#endif
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/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
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<libintl.h>, which chokes if dcgettext is defined as a macro. So include
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it now, to make later inclusions of <libintl.h> a NOP. */
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#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
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# include <cstdlib>
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# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H
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# include <libintl.h>
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# endif
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#endif
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/* Disabled NLS.
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The casts to 'const char *' serve the purpose of producing warnings
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for invalid uses of the value returned from these functions.
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On pre-ANSI systems without 'const', the config.h file is supposed to
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contain "#define const". */
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# undef gettext
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# define gettext(Msgid) ((const char *) (Msgid))
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# undef dgettext
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# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
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# undef dcgettext
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# define dcgettext(Domainname, Msgid, Category) \
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((void) (Category), dgettext (Domainname, Msgid))
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# undef ngettext
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# define ngettext(Msgid1, Msgid2, N) \
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((N) == 1 \
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? ((void) (Msgid2), (const char *) (Msgid1)) \
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: ((void) (Msgid1), (const char *) (Msgid2)))
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# undef dngettext
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# define dngettext(Domainname, Msgid1, Msgid2, N) \
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((void) (Domainname), ngettext (Msgid1, Msgid2, N))
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# undef dcngettext
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# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
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((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
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# undef textdomain
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# define textdomain(Domainname) ((const char *) (Domainname))
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# undef bindtextdomain
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# define bindtextdomain(Domainname, Dirname) \
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((void) (Domainname), (const char *) (Dirname))
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# undef bind_textdomain_codeset
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# define bind_textdomain_codeset(Domainname, Codeset) \
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((void) (Domainname), (const char *) (Codeset))
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#endif
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/* Prefer gnulib's setlocale override over libintl's setlocale override. */
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#ifdef GNULIB_defined_setlocale
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# undef setlocale
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# define setlocale rpl_setlocale
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#endif
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/* A pseudo function call that serves as a marker for the automated
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extraction of messages, but does not call gettext(). The run-time
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translation is done at a different place in the code.
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The argument, String, should be a literal string. Concatenated strings
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and other string expressions won't work.
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The macro's expansion is not parenthesized, so that it is suitable as
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initializer for static 'char[]' or 'const char[]' variables. */
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#define gettext_noop(String) String
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/* The separator between msgctxt and msgid in a .mo file. */
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#define GETTEXT_CONTEXT_GLUE "\004"
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/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
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MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
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short and rarely need to change.
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The letter 'p' stands for 'particular' or 'special'. */
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#ifdef DEFAULT_TEXT_DOMAIN
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# define pgettext(Msgctxt, Msgid) \
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pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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#else
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# define pgettext(Msgctxt, Msgid) \
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pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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#endif
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#define dpgettext(Domainname, Msgctxt, Msgid) \
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pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
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pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
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#ifdef DEFAULT_TEXT_DOMAIN
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# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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#else
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# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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#endif
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#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
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npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
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#if defined __GNUC__ || defined __clang__
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__inline
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#else
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#ifdef __cplusplus
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inline
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#endif
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#endif
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static const char *
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pgettext_aux (const char *domain,
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const char *msg_ctxt_id, const char *msgid,
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int category)
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{
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const char *translation = dcgettext (domain, msg_ctxt_id, category);
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if (translation == msg_ctxt_id)
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return msgid;
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else
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return translation;
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}
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#if defined __GNUC__ || defined __clang__
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__inline
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#else
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#ifdef __cplusplus
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inline
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#endif
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#endif
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static const char *
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npgettext_aux (const char *domain,
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const char *msg_ctxt_id, const char *msgid,
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const char *msgid_plural, unsigned long int n,
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int category)
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{
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const char *translation =
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dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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if (translation == msg_ctxt_id || translation == msgid_plural)
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return (n == 1 ? msgid : msgid_plural);
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else
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return translation;
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}
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/* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
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can be arbitrary expressions. But for string literals these macros are
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less efficient than those above. */
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#include <string.h>
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/* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
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This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
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the default GCC many warnings set. This allows programs to disable use
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of VLAs, which may be unintended, or may be awkward to support portably,
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or may have security implications due to non-deterministic stack usage. */
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#if (!defined GNULIB_NO_VLA \
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&& defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__ \
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&& !defined __STDC_NO_VLA__)
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# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
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#else
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# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
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#endif
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#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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#include <stdlib.h>
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#endif
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#define pgettext_expr(Msgctxt, Msgid) \
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dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
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#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
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dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
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#if defined __GNUC__ || defined __clang__
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__inline
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#else
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#ifdef __cplusplus
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inline
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#endif
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#endif
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static const char *
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dcpgettext_expr (const char *domain,
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const char *msgctxt, const char *msgid,
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int category)
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{
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size_t msgctxt_len = strlen (msgctxt) + 1;
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size_t msgid_len = strlen (msgid) + 1;
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const char *translation;
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#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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char msg_ctxt_id[msgctxt_len + msgid_len];
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#else
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char buf[1024];
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char *msg_ctxt_id =
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(msgctxt_len + msgid_len <= sizeof (buf)
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? buf
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: (char *) malloc (msgctxt_len + msgid_len));
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if (msg_ctxt_id != NULL)
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#endif
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{
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int found_translation;
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memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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msg_ctxt_id[msgctxt_len - 1] = '\004';
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memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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translation = dcgettext (domain, msg_ctxt_id, category);
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found_translation = (translation != msg_ctxt_id);
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#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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if (msg_ctxt_id != buf)
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free (msg_ctxt_id);
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#endif
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if (found_translation)
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return translation;
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}
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return msgid;
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}
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#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
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dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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#if defined __GNUC__ || defined __clang__
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__inline
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#else
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#ifdef __cplusplus
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inline
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#endif
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#endif
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static const char *
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dcnpgettext_expr (const char *domain,
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const char *msgctxt, const char *msgid,
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const char *msgid_plural, unsigned long int n,
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int category)
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{
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size_t msgctxt_len = strlen (msgctxt) + 1;
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size_t msgid_len = strlen (msgid) + 1;
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const char *translation;
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#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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char msg_ctxt_id[msgctxt_len + msgid_len];
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#else
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char buf[1024];
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char *msg_ctxt_id =
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(msgctxt_len + msgid_len <= sizeof (buf)
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? buf
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: (char *) malloc (msgctxt_len + msgid_len));
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if (msg_ctxt_id != NULL)
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#endif
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{
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int found_translation;
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memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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msg_ctxt_id[msgctxt_len - 1] = '\004';
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memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
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#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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if (msg_ctxt_id != buf)
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free (msg_ctxt_id);
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#endif
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if (found_translation)
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return translation;
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}
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return (n == 1 ? msgid : msgid_plural);
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}
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#endif /* _LIBGETTEXT_H */
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