locate: use const pointers

Pass const pointers where no writes are performed.

src/dbUtils.c

@@ -36,12 +36,12 @@
 typedef struct _ListCommandItem {
 	int8_t tagType;
 	int numConditionals;
-	LocateTagItem *conditionals;
+	const LocateTagItem *conditionals;
 } ListCommandItem;
 
 typedef struct _LocateTagItemArray {
 	int numItems;
-	LocateTagItem *items;
+	const LocateTagItem *items;
 } LocateTagItemArray;
 
 typedef struct _SearchStats {
@@ -87,31 +87,24 @@ searchInDirectory(struct song *song, void *_data)
 }
 
 int searchForSongsIn(struct client *client, const char *name,
-		     int numItems, LocateTagItem * items)
+		     int numItems, const LocateTagItem * items)
 {
 	int ret;
 	int i;
-
-	char **originalNeedles = g_new(char *, numItems);
+	LocateTagItem *new_items =
+		g_memdup(items, sizeof(LocateTagItem) * numItems);
 	struct search_data data;
 
-	for (i = 0; i < numItems; i++) {
-		originalNeedles[i] = items[i].needle;
-		items[i].needle = g_utf8_casefold(originalNeedles[i], -1);
-	}
+	for (i = 0; i < numItems; i++)
+		new_items[i].needle = g_utf8_casefold(new_items[i].needle, -1);
 
 	data.client = client;
 	data.array.numItems = numItems;
-	data.array.items = items;
+	data.array.items = new_items;
 
 	ret = db_walk(name, searchInDirectory, NULL, &data);
 
-	for (i = 0; i < numItems; i++) {
-		g_free(items[i].needle);
-		items[i].needle = originalNeedles[i];
-	}
-
-	free(originalNeedles);
+	freeLocateTagItemArray(numItems, new_items);
 
 	return ret;
 }
@@ -129,7 +122,7 @@ findInDirectory(struct song *song, void *_data)
 }
 
 int findSongsIn(struct client *client, const char *name,
-		int numItems, LocateTagItem * items)
+		int numItems, const LocateTagItem * items)
 {
 	struct search_data data;
 
@@ -162,7 +155,7 @@ searchStatsInDirectory(struct song *song, void *data)
 }
 
 int searchStatsForSongsIn(struct client *client, const char *name,
-			  int numItems, LocateTagItem * items)
+			  int numItems, const LocateTagItem * items)
 {
 	SearchStats stats;
 	int ret;
@@ -234,7 +227,7 @@ int printInfoForAllIn(struct client *client, const char *name)
 }
 
 static ListCommandItem *newListCommandItem(int tagType, int numConditionals,
-					   LocateTagItem * conditionals)
+					   const LocateTagItem * conditionals)
 {
 	ListCommandItem *item = g_new(ListCommandItem, 1);
 
@@ -295,7 +288,7 @@ listUniqueTagsInDirectory(struct song *song, void *_data)
 }
 
 int listAllUniqueTags(struct client *client, int type, int numConditionals,
-		      LocateTagItem * conditionals)
+		      const LocateTagItem *conditionals)
 {
 	int ret;
 	ListCommandItem *item = newListCommandItem(type, numConditionals,

src/dbUtils.h

@@ -32,18 +32,18 @@ int addAllInToStoredPlaylist(const char *name, const char *utf8file);
 int printInfoForAllIn(struct client *client, const char *name);
 
 int searchForSongsIn(struct client *client, const char *name,
-		     int numItems, LocateTagItem * items);
+		     int numItems, const LocateTagItem * items);
 
 int findSongsIn(struct client *client, const char *name,
-		int numItems, LocateTagItem * items);
+		int numItems, const LocateTagItem * items);
 
 int searchStatsForSongsIn(struct client *client, const char *name,
-			  int numItems, LocateTagItem * items);
+			  int numItems, const LocateTagItem * items);
 
 unsigned long sumSongTimesIn(const char *name);
 
 int listAllUniqueTags(struct client *client, int type, int numConditiionals,
-		      LocateTagItem * conditionals);
+		      const LocateTagItem *conditionals);
 
 void printSavedMemoryFromFilenames(void);
 

src/locate.c

@@ -127,7 +127,7 @@ void freeLocateTagItem(LocateTagItem * item)
 }
 
 static int
-strstrSearchTag(struct song *song, enum tag_type type, char *str)
+strstrSearchTag(const struct song *song, enum tag_type type, const char *str)
 {
 	int i;
 	char *duplicate;
@@ -177,7 +177,8 @@ strstrSearchTag(struct song *song, enum tag_type type, char *str)
 }
 
 int
-strstrSearchTags(struct song *song, int numItems, LocateTagItem *items)
+strstrSearchTags(const struct song *song, int numItems,
+		 const LocateTagItem *items)
 {
 	int i;
 
@@ -192,7 +193,8 @@ strstrSearchTags(struct song *song, int numItems, LocateTagItem *items)
 }
 
 static int
-tagItemFoundAndMatches(struct song *song, enum tag_type type, char *str)
+tagItemFoundAndMatches(const struct song *song, enum tag_type type,
+		       const char *str)
 {
 	int i;
 	int8_t visitedTypes[TAG_NUM_OF_ITEM_TYPES] = { 0 };
@@ -237,8 +239,8 @@ tagItemFoundAndMatches(struct song *song, enum tag_type type, char *str)
 
 
 int
-tagItemsFoundAndMatches(struct song *song, int numItems,
-			LocateTagItem * items)
+tagItemsFoundAndMatches(const struct song *song, int numItems,
+			const LocateTagItem * items)
 {
 	int i;
 

src/locate.h

@@ -47,10 +47,11 @@ void freeLocateTagItemArray(int count, LocateTagItem * array);
 void freeLocateTagItem(LocateTagItem * item);
 
 int
-strstrSearchTags(struct song *song, int numItems, LocateTagItem * items);
+strstrSearchTags(const struct song *song, int numItems,
+		 const LocateTagItem * items);
 
 int
-tagItemsFoundAndMatches(struct song *song, int numItems,
-			LocateTagItem * items);
+tagItemsFoundAndMatches(const struct song *song, int numItems,
+			const LocateTagItem * items);
 
 #endif