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The Q_ function translates a string representing some pharse with an alternative plural form and uses the 'count' argument to choose which form to return. Use of Q_ solves the "%d noun(s)" problem in a way that is portable to languages outside the Germanic and Romance families. In English, the semantics of Q_(sing, plur, count) are roughly equivalent to count == 1 ? _(sing) : _(plur) while in other languages there can be more variants (count == 0; more random-looking rules based on the historical pronunciation of the number). Behind the scenes, the singular form is used to look up a family of translations and the plural form is ignored unless no translation is available. Define such a Q_ in gettext.h with the English semantics so C code can start using it to mark phrases with a count for translation. The name "Q_" is taken from subversion and stands for "quantity". Many projects just use ngettext directly without a wrapper analogous to _; we should not do so because git's gettext.h is meant not to conflict with system headers that might include libintl.h. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
40 lines
977 B
C
40 lines
977 B
C
/*
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* Copyright (c) 2010-2011 Ævar Arnfjörð Bjarmason
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*
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* This is a skeleton no-op implementation of gettext for Git.
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* You can replace it with something that uses libintl.h and wraps
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* gettext() to try out the translations.
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*/
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#ifndef GETTEXT_H
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#define GETTEXT_H
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#if defined(_) || defined(Q_)
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#error "namespace conflict: '_' or 'Q_' is pre-defined?"
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#endif
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#define FORMAT_PRESERVING(n) __attribute__((format_arg(n)))
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#ifdef GETTEXT_POISON
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extern int use_gettext_poison(void);
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#else
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#define use_gettext_poison() 0
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#endif
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static inline FORMAT_PRESERVING(1) const char *_(const char *msgid)
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{
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return use_gettext_poison() ? "# GETTEXT POISON #" : msgid;
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}
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static inline FORMAT_PRESERVING(1) FORMAT_PRESERVING(2)
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const char *Q_(const char *msgid, const char *plu, unsigned long n)
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{
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if (use_gettext_poison())
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return "# GETTEXT POISON #";
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return n == 1 ? msgid : plu;
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}
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/* Mark msgid for translation but do not translate it. */
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#define N_(msgid) (msgid)
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#endif
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