Ticket #381: jonl.patch

TiddlyWiki.js

@@ -530 +530 @@
-        return this.saver;
-};
-
+// Filter a list of tiddlers
+//#   filter - filter expression (eg "tidlertitle [[multi word tiddler title]] [tag[systemConfig]]")
+//# Returns an array of Tiddler() objects that match the filter expression
+TiddlyWiki.prototype.filterTiddlers = function(filter)
+{
+        var results = [];
+        if(filter) {
+                var re = /(\w+)|(?:\[([ \w]+)\[([ \w]+)\]\])|(?:\[\[([ \w]+)\]\])/mg;
+                var match = re.exec(filter);
+                while(match) {
+                        if(match[1]) {
+                                //# matches (eg) text
+                                var tiddler = this.fetchTiddler(match[1])
+                                if(tiddler)
+                                        results.push(tiddler);
+                        } else if(match[2]) {
+                                //# matches (eg) [text[more text]]
+                                if(match[2]=="tag") {
+                                        this.forEachTiddler(function(title,tiddler) {
+                                                if(tiddler.isTaggedAllOf(match[3].split(" "))) {
+                                                        results.push(tiddler);
+                                                } else displayMessage(match[3]);
+                                        });
+                                }
+                        } else if(match[4]) {
+                                //# matches (eg) [[tiddler title]]
+                                var tiddler = this.fetchTiddler(match[4])
+                                if(tiddler)
+                                        results.push(tiddler);
+                        }                       
+                        match = re.exec(filter);
+                }
+        } else {
+                this.forEachTiddler(function(title,tiddler) {results.push(tiddler);});
+        }
+        return results;
+};