Implement vlc_ngettext() to deal with plurals

include/vlc_common.h

@@ -918,7 +918,8 @@ VLC_API void * vlc_memcpy( void *, const void *, size_t );
 /*****************************************************************************
  * I18n stuff
  *****************************************************************************/
-VLC_API char * vlc_gettext( const char *msgid ) VLC_FORMAT_ARG(1);
+VLC_API char *vlc_gettext( const char *msgid ) VLC_FORMAT_ARG(1);
+VLC_API char *vlc_ngettext( const char *s, const char *p, unsigned long n ) VLC_FORMAT_ARG(1) VLC_FORMAT_ARG(2);
 
 #define vlc_pgettext( ctx, id ) \
         vlc_pgettext_aux( ctx "\004" id, id )

po/Makevars

@@ -10,7 +10,7 @@ subdir = po
 top_builddir = ..
 
 # These options get passed to xgettext.
-XGETTEXT_OPTIONS = --directory=.. --keyword=_ --keyword=N_ --keyword=_NS --keyword=_ANS --keyword=qtr --keyword=Q_ --language=C++ --keyword=vlc_pgettext:1c,2 --add-comments=xgettext: --from-code=UTF-8
+XGETTEXT_OPTIONS = --directory=.. --keyword=_ --keyword=N_ --keyword=_NS --keyword=_ANS --keyword=qtr --keyword=Q_ --language=C++ --keyword=vlc_ngettext:1,2 --keyword=vlc_pgettext:1c,2 --add-comments=xgettext: --from-code=UTF-8
 
 # This is the copyright holder that gets inserted into the header of the
 # $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding

src/libvlccore.sym

@@ -537,6 +537,7 @@ vlc_GetActionId
 vlc_getaddrinfo
 vlc_getnameinfo
 vlc_gettext
+vlc_ngettext
 vlc_hold
 vlc_iconv
 vlc_iconv_close

src/modules/textdomain.c

@@ -97,10 +97,17 @@ int vlc_bindtextdomain (const char *domain)
 char *vlc_gettext (const char *msgid)
 {
 #ifdef ENABLE_NLS
-    if (unlikely(!*msgid))
-        return (char *)"";
+    if (likely(*msgid))
         return dgettext (PACKAGE_NAME, msgid);
-#else
+#endif
     return (char *)msgid;
+}
+
+char *vlc_ngettext (const char *msgid, const char *plural, unsigned long n)
+{
+#ifdef ENABLE_NLS
+    if (likely(*msgid))
+        return dngettext (PACKAGE_NAME, msgid, plural, n);
 #endif
+    return (char *)((n == 1) ? msgid : plural);
 }