From 5fabb4d6e75806729a710673b7657df2b440c801 Mon Sep 17 00:00:00 2001
From: Ulf Lilleengen <lulf@carrot.studby.ntnu.no>
Date: Sat, 9 Aug 2008 16:19:57 +0200
Subject: - Change lookup_fn to return values, so we can stop the lookup_finish
 loop on   the SQL results.

---
 include/mp3fs.h |  3 ++-
 src/mp3_subr.c  | 23 ++++++++++++++++-------
 2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/include/mp3fs.h b/include/mp3fs.h
index 4966aee..847f047 100644
--- a/include/mp3fs.h
+++ b/include/mp3fs.h
@@ -35,7 +35,8 @@ struct file_data {
 #define LIST_DATATYPE_STRING 1
 #define LIST_DATATYPE_INT 2
 
-typedef void lookup_fn_t(void *, const char *);
+/* A lookup functions returns 0 if it's finished. */
+typedef int lookup_fn_t(void *, const char *);
 /* Lookup function listing each row. */
 lookup_fn_t mp3_lookup_list;
 /* Lookup function opening the first file match. */
diff --git a/src/mp3_subr.c b/src/mp3_subr.c
index 814888d..72f2994 100644
--- a/src/mp3_subr.c
+++ b/src/mp3_subr.c
@@ -300,7 +300,7 @@ mp3_lookup_finish(struct lookuphandle *lh)
 {
 	char buf[1024];
 	const unsigned char *value;
-	int ret, type, val;
+	int ret, type, val, finished;
 
 	if (lh == NULL)
 		return;
@@ -311,15 +311,20 @@ mp3_lookup_finish(struct lookuphandle *lh)
 		case SQLITE_INTEGER:
 			val = sqlite3_column_int(lh->st, lh->field);
 			snprintf(buf, sizeof(buf), "%d", val);
-			lh->lookup(lh->priv, (const char *)buf);
+			finished = lh->lookup(lh->priv, (const char *)buf);
 			break;
 		case SQLITE_TEXT:
 			value = sqlite3_column_text(lh->st, lh->field);
-			lh->lookup(lh->priv, (const char *)value);
+			finished = lh->lookup(lh->priv, (const char *)value);
+			break;
+		default:
+			finished = 0;
 			break;
 //		default:
 //			lh->filler(lh->buf, "UNKNOWN TYPE", NULL, 0);
 		}
+		if (finished)
+			break;
 		ret = sqlite3_step(lh->st);
 	}
 	// XXX: Check for errors too.
@@ -488,19 +493,20 @@ mp3_lookup_genre(const char *path, struct filler_data *fd)
 /*
  * Lookup function for filling given data into a filler.
  */
-void
+int
 mp3_lookup_list(void *data, const char *str)
 {
 	struct filler_data *fd;
 
 	fd = (struct filler_data *)data;
 	fd->filler(fd->buf, str, NULL, 0);
+	return (1);
 }
 
 /*
  * Lookup a file and open it if found.
  */
-void
+int
 mp3_lookup_open(void *data, const char *str)
 {
 	struct file_data *fd;
@@ -509,19 +515,22 @@ mp3_lookup_open(void *data, const char *str)
 	if (!fd->found) {
 		fd->fd = open(str, O_RDONLY);
 		fd->found = 1;
+		return (0);
 	}
+	return (1);
 }
 
 /*
  * Stat a file.
  * XXX: watch out for duplicates, we might stat more than once.
  */
-void
+int
 mp3_lookup_stat(void *data, const char *str)
 {
 	struct stat *st;
 
 	st = (struct stat *)data;
 	if (stat(str, st) < 0)
-		return;
+		return (-1);
+	return (0);
 }
-- 
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