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https://github.com/Jermolene/TiddlyWiki5
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Merge pull request #2161 from matabele/patch-3
Tidied up the code in the x-listops filters
This commit is contained in:
Jeremy Ruston
commit
31b4f104e4
@ -8,185 +8,182 @@ Extended filter operators to manipulate the current list.
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\*/
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(function () {
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var prepare_results = function (source) {
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/*
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Fetch titles from the current list
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*/
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var prepare_results = function (source) {
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var results = [];
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source(function (tiddler, title) {
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results.push(title);
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});
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return results;
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};
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source(function (tiddler, title) {
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results.push(title);
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});
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return results;
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};
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/*
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Moves a number of items from the tail of the current list before the item named in the operand
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*/
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exports.putbefore = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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if (index === -1) {
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return results.slice(0, -1);
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}
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return results.slice(0, index).concat(results.slice(-count)).concat(results.slice(index, -count));
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};
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/*
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Moves a number of items from the tail of the current list before the item named in the operand
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*/
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exports.putbefore = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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return (index === -1) ?
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results.slice(0, -1) :
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results.slice(0, index).concat(results.slice(-count)).concat(results.slice(index, -count));
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};
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/*
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Moves a number of items from the tail of the current list after the item named in the operand
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*/
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exports.putafter = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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if (index === -1) {
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return results.slice(0, -1);
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}
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return results.slice(0, index + 1).concat(results.slice(-count)).concat(results.slice(index + 1, -count));
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};
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/*
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Moves a number of items from the tail of the current list after the item named in the operand
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*/
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exports.putafter = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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return (index === -1) ?
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results.slice(0, -1) :
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results.slice(0, index + 1).concat(results.slice(-count)).concat(results.slice(index + 1, -count));
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};
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/*
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Replaces the item named in the operand with a number of items from the tail of the current list
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*/
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exports.replace = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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if (index === -1) {
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return results.slice(0, -count);
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}
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return results.slice(0, index).concat(results.slice(-count)).concat(results.slice(index + 1, -count));
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};
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/*
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Replaces the item named in the operand with a number of items from the tail of the current list
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*/
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exports.replace = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1;
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return (index === -1) ?
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results.slice(0, -count) :
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results.slice(0, index).concat(results.slice(-count)).concat(results.slice(index + 1, -count));
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};
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/*
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Moves a number of items from the tail of the current list to the head of the list
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*/
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exports.putfirst = function (source, operator, options) {
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var results = prepare_results(source),
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count = parseInt(operator.suffix) || 1;
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return results.slice(-count).concat(results.slice(0, -count));
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};
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/*
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Moves a number of items from the tail of the current list to the head of the list
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*/
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exports.putfirst = function (source, operator) {
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var results = prepare_results(source),
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count = parseInt(operator.suffix) || 1;
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return results.slice(-count).concat(results.slice(0, -count));
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};
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/*
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Moves a number of items from the head of the current list to the tail of the list
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*/
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exports.putlast = function (source, operator, options) {
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var results = prepare_results(source),
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count = parseInt(operator.suffix) || 1;
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return results.slice(count).concat(results.slice(0, count));
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};
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/*
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Moves a number of items from the head of the current list to the tail of the list
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*/
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exports.putlast = function (source, operator) {
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var results = prepare_results(source),
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count = parseInt(operator.suffix) || 1;
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return results.slice(count).concat(results.slice(0, count));
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};
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/*
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Moves the item named in the operand a number of places forward or backward in the list
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*/
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exports.move = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1,
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marker = results.splice(index, 1);
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return results.slice(0, index + count).concat(marker).concat(results.slice(index + count));
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};
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/*
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Moves the item named in the operand a number of places forward or backward in the list
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*/
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exports.move = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand),
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count = parseInt(operator.suffix) || 1,
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marker = results.splice(index, 1);
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return results.slice(0, index + count).concat(marker).concat(results.slice(index + count));
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};
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/*
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Returns the items from the current list that are after the item named in the operand
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*/
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exports.allafter = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand);
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if (index === -1 || index > (results.length - 2)) {
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return [];
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}
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if (operator.suffix) {
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return results.slice(index);
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}
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return results.slice(index + 1);
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};
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/*
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Returns the items from the current list that are after the item named in the operand
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*/
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exports.allafter = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand);
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return (index === -1 || index > (results.length - 2)) ? [] :
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(operator.suffix) ? results.slice(index) :
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results.slice(index + 1);
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};
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/*
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Returns the items from the current list that are before the item named in the operand
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*/
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exports.allbefore = function (source, operator, options) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand);
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if (index <= 0) {
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return [];
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}
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if (operator.suffix) {
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return results.slice(0, index + 1);
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}
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return results.slice(0, index);
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};
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/*
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Returns the items from the current list that are before the item named in the operand
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*/
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exports.allbefore = function (source, operator) {
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var results = prepare_results(source),
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index = results.indexOf(operator.operand);
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return (index <= 0) ? [] :
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(operator.suffix) ? results.slice(0, index + 1) :
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results.slice(0, index);
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};
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/*
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Appends the items listed in the operand array to the tail of the current list
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*/
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exports.append = function (source, operator, options) {
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var append = $tw.utils.parseStringArray(operator.operand),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || append.length;
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if (append.length === 0) {
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return results;
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}
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if (operator.prefix) {
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return results.concat(append.slice(-count));
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} else {
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return results.concat(append.slice(0, count));
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}
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};
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/*
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Appends the items listed in the operand array to the tail of the current list
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*/
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exports.append = function (source, operator) {
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var append = $tw.utils.parseStringArray(operator.operand, "true"),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || append.length;
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return (append.length === 0) ? results :
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(operator.prefix) ? results.concat(append.slice(-count)) :
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results.concat(append.slice(0, count));
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};
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/*
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Prepends the items listed in the operand array to the head of the current list
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*/
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exports.prepend = function (source, operator, options) {
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var prepend = $tw.utils.parseStringArray(operator.operand),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || prepend.length;
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if (prepend.length === 0) {
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return results;
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}
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if (operator.prefix) {
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return prepend.slice(-count).concat(results);
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} else {
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return prepend.slice(0, count).concat(results);
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}
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};
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/*
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Prepends the items listed in the operand array to the head of the current list
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*/
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exports.prepend = function (source, operator) {
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var prepend = $tw.utils.parseStringArray(operator.operand, "true"),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || prepend.length;
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return (prepend.length === 0) ? results :
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(operator.prefix) ? prepend.slice(-count).concat(results) :
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prepend.slice(0, count).concat(results);
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};
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/*
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Returns all items from the current list except the items listed in the operand array
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*/
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exports.remove = function (source, operator, options) {
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var array = $tw.utils.parseStringArray(operator.operand),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || array.length,
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p, len, index;
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len = array.length - 1;
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for (p = 0; p < count; ++p) {
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if (operator.prefix) {
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index = results.indexOf(array[len - p]);
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} else {
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index = results.indexOf(array[p]);
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}
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if (index !== -1) {
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results.splice(index, 1);
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}
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}
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return results;
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};
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/*
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Returns all items from the current list except the items listed in the operand array
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*/
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exports.remove = function (source, operator) {
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var array = $tw.utils.parseStringArray(operator.operand, "true"),
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results = prepare_results(source),
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count = parseInt(operator.suffix) || array.length,
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p,
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len,
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index;
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len = array.length - 1;
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for (p = 0; p < count; ++p) {
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if (operator.prefix) {
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index = results.indexOf(array[len - p]);
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} else {
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index = results.indexOf(array[p]);
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}
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if (index !== -1) {
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results.splice(index, 1);
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}
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}
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return results;
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};
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/*
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Returns all items from the current list sorted in the order of the items in the operand array
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*/
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exports.sortby = function (source, operator, options) {
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var results = prepare_results(source);
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if (!results || results.length < 2) {
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return results;
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}
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var lookup = $tw.utils.parseStringArray(operator.operand);
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results.sort(function (a, b) {
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return lookup.indexOf(a) - lookup.indexOf(b);
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});
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return results;
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};
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/*
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Returns all items from the current list sorted in the order of the items in the operand array
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*/
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exports.sortby = function (source, operator) {
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var results = prepare_results(source);
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if (!results || results.length < 2) {
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return results;
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}
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var lookup = $tw.utils.parseStringArray(operator.operand, "true");
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results.sort(function (a, b) {
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return lookup.indexOf(a) - lookup.indexOf(b);
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});
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return results;
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};
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/*
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Removes all duplicate items from the current list
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*/
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exports.unique = function (source, operator) {
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var results = prepare_results(source);
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var set = results.reduce(function (a, b) {
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if (a.indexOf(b) < 0) {
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a.push(b);
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}
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return a;
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}, []);
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return set;
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};
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})();
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