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https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-25 17:40:29 +00:00
parent
d6cafa9da1
commit
be040ea8a2
@ -33,7 +33,7 @@ function parseFilterOperation(operators,filterString,p) {
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operator.prefix = filterString.charAt(p++);
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operator.prefix = filterString.charAt(p++);
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}
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}
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// Get the operator name
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// Get the operator name
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var nextBracketPos = filterString.substring(p).search(/[\[\{\/]/);
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var nextBracketPos = filterString.substring(p).search(/[\[\{<\/]/);
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if(nextBracketPos === -1) {
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if(nextBracketPos === -1) {
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throw "Missing [ in filter expression";
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throw "Missing [ in filter expression";
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}
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}
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@ -54,14 +54,18 @@ function parseFilterOperation(operators,filterString,p) {
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p = nextBracketPos + 1;
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p = nextBracketPos + 1;
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switch (bracket) {
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switch (bracket) {
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case '{': // Curly brackets
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case "{": // Curly brackets
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operator.indirect = true;
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operator.indirect = true;
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nextBracketPos = filterString.indexOf('}',p);
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nextBracketPos = filterString.indexOf("}",p);
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break;
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break;
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case '[': // Square brackets
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case "[": // Square brackets
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nextBracketPos = filterString.indexOf(']',p);
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nextBracketPos = filterString.indexOf("]",p);
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break;
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break;
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case '/': // regexp brackets
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case "<": // Angle brackets
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operator.variable = true;
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nextBracketPos = filterString.indexOf(">",p);
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break;
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case "/": // regexp brackets
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var rex = /^((?:[^\\\/]*|\\.)*)\/(?:\(([mygi]+)\))?/g,
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var rex = /^((?:[^\\\/]*|\\.)*)\/(?:\(([mygi]+)\))?/g,
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rexMatch = rex.exec(filterString.substring(p));
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rexMatch = rex.exec(filterString.substring(p));
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if(rexMatch) {
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if(rexMatch) {
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@ -193,6 +197,9 @@ exports.compileFilter = function(filterString) {
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if(operator.indirect) {
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if(operator.indirect) {
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operand = self.getTextReference(operator.operand,"",currTiddlerTitle);
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operand = self.getTextReference(operator.operand,"",currTiddlerTitle);
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}
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}
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if(operator.variable) {
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operand = widget.getVariable(operator.operand,"");
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}
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results = operatorFunction(accumulator,{
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results = operatorFunction(accumulator,{
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operator: operator.operator,
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operator: operator.operator,
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operand: operand,
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operand: operand,
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@ -270,6 +270,25 @@ describe("Filter tests", function() {
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expect(wiki.filterTiddlers("[modifier{!!modifier}] +[sort[title]]",fakeWidget).join(",")).toBe("$:/TiddlerTwo,a fourth tiddler,one,Tiddler Three");
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expect(wiki.filterTiddlers("[modifier{!!modifier}] +[sort[title]]",fakeWidget).join(",")).toBe("$:/TiddlerTwo,a fourth tiddler,one,Tiddler Three");
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});
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});
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it("should handle variable operands", function() {
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var widget = require("$:/core/modules/widgets/widget.js");
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// Create a root widget for attaching event handlers. By using it as the parentWidget for another widget tree, one can reuse the event handlers
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var rootWidget = new widget.widget({
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type: "widget",
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children: [{type: "widget", children: []}]
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},{
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wiki: $tw.wiki,
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document: $tw.document
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});
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rootWidget.makeChildWidgets();
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var anchorWidget = rootWidget.children[0];
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rootWidget.setVariable("myVar","Tidd");
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rootWidget.setVariable("myVar2","JoeBloggs");
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expect(wiki.filterTiddlers("[prefix<myVar>] +[sort[title]]",anchorWidget).join(",")).toBe("Tiddler Three,TiddlerOne");
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expect(wiki.filterTiddlers("[modifier<myVar2>] +[sort[title]]",anchorWidget).join(",")).toBe("TiddlerOne");
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});
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it("should handle the before and after operators", function() {
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it("should handle the before and after operators", function() {
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expect(wiki.filterTiddlers("[list[TiddlerSeventh]after[TiddlerOne]]").join(",")).toBe("Tiddler Three");
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expect(wiki.filterTiddlers("[list[TiddlerSeventh]after[TiddlerOne]]").join(",")).toBe("Tiddler Three");
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expect(wiki.filterTiddlers("[list[TiddlerSeventh]after[a fourth tiddler]]").join(",")).toBe("MissingTiddler");
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expect(wiki.filterTiddlers("[list[TiddlerSeventh]after[a fourth tiddler]]").join(",")).toBe("MissingTiddler");
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@ -1,5 +1,5 @@
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created: 20140210141217955
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created: 20140210141217955
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modified: 20140303091312363
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modified: 20140725091312363
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tags: dev
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tags: dev
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title: TiddlerFilter Formal Grammar
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title: TiddlerFilter Formal Grammar
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type: text/vnd.tiddlywiki
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type: text/vnd.tiddlywiki
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@ -34,7 +34,7 @@ Whitespace is matched with javascript "\s+", which matches space, tab, carriage
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''<opt-operator-suffix>'' ::= ''<string>'' | ""
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''<opt-operator-suffix>'' ::= ''<string>'' | ""
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''<operand>'' ::= "[" ''<search-string>'' "]" | "{" ''<indirect-search-string>'' "}" | ''<regex>''
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''<operand>'' ::= "[" ''<search-string>'' "]" | "{" ''<indirect-search-string>'' "}" | "<" ''<variable-name-string>'' ">" | ''<regex>''
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''<regex>'' ::= "/" ''<string>'' "/" ''<opt-regex-args>''
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''<regex>'' ::= "/" ''<string>'' "/" ''<opt-regex-args>''
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@ -1,5 +1,5 @@
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created: 20140410101941871
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created: 20140410101941871
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modified: 20140410103229640
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modified: 20140725103229640
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tags: introduction
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tags: introduction
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title: Introduction to Filters
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title: Introduction to Filters
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type: text/vnd.tiddlywiki
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type: text/vnd.tiddlywiki
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@ -67,6 +67,16 @@ If a filter operator is written with curly brackets around the operand then it i
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[search{$:/temp/search}]
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[search{$:/temp/search}]
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```
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```
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! Variable Operands
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If a filter operator is written with angle brackets around the operand then it is taken to be the name of a variable containing the actual value. For example, this filter selects all tiddlers containing the title of the current tiddler:
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```
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[search<currentTiddler>]
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```
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(Note that the `currentTiddler` variable is used to track the current tiddler).
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! Regular Expression Operands
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! Regular Expression Operands
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The "field" filter also accepts [[regular expressions|http://en.wikipedia.org/wiki/Regular_expression]] with the syntax `/regexp/(modifier)`. For example:
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The "field" filter also accepts [[regular expressions|http://en.wikipedia.org/wiki/Regular_expression]] with the syntax `/regexp/(modifier)`. For example:
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