macosx: add macro for contextualized translation strings

modules/gui/macosx/extensions/NSString+Helpers.h

@@ -30,6 +30,16 @@
 
 #define _NS(s) ((s) ? toNSStr(vlc_gettext(s)) : @"")
 
+/**
+ * Get a contextualized translation string
+ *
+ * Sometimes a translations needs to be unique to a specific context
+ * even though it has the same ID (text) as a different translation.
+ * In this case, this macro should be used with a unique translation
+ * context as the first argument.
+ */
+#define _PNS(c, s) (toNSStr(vlc_pgettext(c, s)))
+
 /* Get an alternate version of the string.
  * This string is stored as '1:string' but when displayed it only displays
  * the translated string. the translation should be '1:translatedstring' though */

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_ngettext:1,2 --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 --keyword=_PNS: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