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authorWarren Dukes <warren.dukes@gmail.com>2004-11-10 21:58:27 +0000
committerWarren Dukes <warren.dukes@gmail.com>2004-11-10 21:58:27 +0000
commitc5d27d8eaa17302b64decc502f70ab00f9a77e74 (patch)
tree88d66ab6e2edd7946e87942b7e1f8249c43ca86b /src/tagTracker.c
parent86cf70dcb262e6637a1859893833c724149d1628 (diff)
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merge changes from metadata-rewrite branch
git-svn-id: https://svn.musicpd.org/mpd/trunk@2589 09075e82-0dd4-0310-85a5-a0d7c8717e4f
Diffstat (limited to 'src/tagTracker.c')
-rw-r--r--src/tagTracker.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/src/tagTracker.c b/src/tagTracker.c
new file mode 100644
index 000000000..30ae7641b
--- /dev/null
+++ b/src/tagTracker.c
@@ -0,0 +1,142 @@
+#include "tagTracker.h"
+
+#include "list.h"
+#include "log.h"
+
+#include <assert.h>
+
+static List * tagLists[TAG_NUM_OF_ITEM_TYPES] =
+{
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+typedef struct tagTrackerItem {
+ int count;
+ mpd_sint8 visited;
+} TagTrackerItem;
+
+char * getTagItemString(int type, char * string) {
+ ListNode * node;
+
+ if(type == TAG_ITEM_TITLE) return strdup(string);
+
+ if(tagLists[type] == NULL) {
+ tagLists[type] = makeList(free);
+ }
+
+ if((node = findNodeInList(tagLists[type], string))) {
+ ((TagTrackerItem *)node->data)->count++;
+ }
+ else {
+ TagTrackerItem * item = malloc(sizeof(TagTrackerItem));
+ item->count = 1;
+ item->visited = 0;
+ node = insertInList(tagLists[type], string, item);
+ }
+
+ return node->key;
+}
+
+void removeTagItemString(int type, char * string) {
+ ListNode * node;
+
+ assert(string);
+
+ if(type == TAG_ITEM_TITLE) {
+ free(string);
+ return;
+ }
+
+ assert(tagLists[type]);
+ if(tagLists[type] == NULL) return;
+
+ node = findNodeInList(tagLists[type], string);
+ assert(node);
+ if(node) {
+ TagTrackerItem * item = node->data;
+ item->count--;
+ if(item->count <= 0) deleteNodeFromList(tagLists[type], node);
+ }
+
+ if(tagLists[type]->numberOfNodes == 0) {
+ freeList(tagLists[type]);
+ tagLists[type] = NULL;
+ }
+}
+
+int getNumberOfTagItems(int type) {
+ if(tagLists[type] == NULL) return 0;
+
+ return tagLists[type]->numberOfNodes;
+}
+
+void printMemorySavedByTagTracker() {
+ int i;
+ ListNode * node;
+ size_t sum = 0;
+
+ for(i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
+ if(!tagLists[i]) continue;
+
+ sum -= sizeof(List);
+
+ node = tagLists[i]->firstNode;
+
+ while(node != NULL) {
+ sum -= sizeof(ListNode);
+ sum -= sizeof(TagTrackerItem);
+ sum -= sizeof(node->key);
+ sum += (strlen(node->key)+1)*(*((int *)node->data));
+ node = node->nextNode;
+ }
+ }
+
+ DEBUG("saved memory: %li\n", (long)sum);
+}
+
+void sortTagTrackerInfo() {
+ int i;
+
+ for(i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
+ if(!tagLists[i]) continue;
+
+ sortList(tagLists[i]);
+ }
+}
+
+void resetVisitedFlagsInTagTracker(int type) {
+ ListNode * node;
+
+ if(!tagLists[type]) return;
+
+ node = tagLists[type]->firstNode;
+
+ while(node) {
+ ((TagTrackerItem *)node->data)->visited = 0;
+ node = node->nextNode;
+ }
+}
+
+int wasVisitedInTagTracker(int type, char * str) {
+ int ret;
+ ListNode * node;
+ TagTrackerItem * item;
+
+ if(!tagLists[type]) return 0;
+
+ node = findNodeInList(tagLists[type], str);
+
+ if(!node) return 0;
+
+ item = node->data;
+ ret = item->visited;
+ item->visited = 1;
+
+ return ret;
+}