Merge branch 'master' of github.com:r888888888/danbooru

app/assets/javascripts/blacklists.js

@@ -98,15 +98,7 @@
     tags.push("rating:" + $post.data("rating"));
     tags.push("user:" + $post.data("user"));
 
-    if (blacklist.require.length > 0 || blacklist.exclude.length > 0) {
-      if (blacklist.require.length === 0 || Danbooru.is_subset(tags, blacklist.require)) {
-        if (blacklist.exclude.length === 0 || (!Danbooru.is_subset(tags, blacklist.exclude))) {
-          return true;
-        }
-      }
-    }
-    
-    return false;
+    return Danbooru.is_subset(tags, blacklist.require) && !Danbooru.intersect(tags, blacklist.exclude).length;
   }
 
   Danbooru.Blacklist.post_hide = function(post) {

app/assets/javascripts/utility.js

@@ -23,6 +23,24 @@
     return all;
   }
 
+  Danbooru.intersect = function(a, b) {
+    a = a.slice(0).sort();
+    b = b.slice(0).sort();
+    var result = [];
+    while (a.length > 0 && b.length > 0)
+    {
+      if (a[0] < b[0]) {
+        a.shift();
+      } else if (a[0] > b[0]) {
+        b.shift();
+      } else {
+        result.push(a.shift());
+        b.shift();
+      }
+    }
+    return result;
+  }
+
   Danbooru.without = function(array, element) {
     var temp = [];
     $.each(array, function(i, v) {