song: converted typedef Song to struct song

Again, a data type which can be forward-declared.

[ew:
 * used "struct mpd_song" instead to avoid token duplication
   (like I did with "struct mpd_tag") as there's no good
   abbreviation for "song" and identical tokens on the same
   line don't read well
 * rewritten using
     perl -i -p -e 's/\bSong\b/struct mpd_song/g' src/*.[ch]
   since it was too hard to merge
 * also, I don't care much for forward declarations
]

1 files changed, 6 insertions, 5 deletions

diff --git a/src/songvec.h b/src/songvec.h
index dbe6be508..341c404c7 100644
--- a/src/songvec.h
+++ b/src/songvec.h
@@ -5,20 +5,21 @@
 #include "os_compat.h"
 
 struct songvec {
-	Song **base;
+	struct mpd_song **base;
 	size_t nr;
 };
 
 void songvec_sort(struct songvec *sv);
 
-Song *songvec_find(struct songvec *sv, const char *url);
+struct mpd_song *songvec_find(struct songvec *sv, const char *url);
 
-int songvec_delete(struct songvec *sv, const Song *del);
+int songvec_delete(struct songvec *sv, const struct mpd_song *del);
 
-void songvec_add(struct songvec *sv, Song *add);
+void songvec_add(struct songvec *sv, struct mpd_song *add);
 
 void songvec_destroy(struct songvec *sv);
 
-int songvec_for_each(struct songvec *sv, int (*fn)(Song *, void *), void *arg);
+int songvec_for_each(struct songvec *sv,
+                     int (*fn)(struct mpd_song *, void *), void *arg);
 
 #endif /* SONGVEC_H */