mirror of
https://github.com/Jermolene/TiddlyWiki5
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108 lines
3.2 KiB
JavaScript
Executable File
108 lines
3.2 KiB
JavaScript
Executable File
/*
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Various static utility functions.
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This file is a bit of a dumping ground; the expectation is that most of these functions will be refactored.
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*/
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/*global require: false, exports: false, process: false */
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"use strict";
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var utils = exports;
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// Pad a string to a certain length with zeros
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utils.zeroPad = function(n,d)
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{
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var s = n.toString();
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if(s.length < d)
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s = "000000000000000000000000000".substr(0,d-s.length) + s;
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return s;
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};
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// Convert a date to UTC YYYYMMDDHHMM string format
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utils.convertToYYYYMMDDHHMM = function(date)
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{
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return date.getUTCFullYear() + utils.zeroPad(date.getUTCMonth()+1,2) + utils.zeroPad(date.getUTCDate(),2) + utils.zeroPad(date.getUTCHours(),2) + utils.zeroPad(date.getUTCMinutes(),2);
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};
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// Convert a date to UTC YYYYMMDDHHMMSSMMM string format
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utils.convertToYYYYMMDDHHMMSSMMM = function(date)
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{
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return date.getUTCFullYear() + utils.zeroPad(date.getUTCMonth()+1,2) + utils.zeroPad(date.getUTCDate(),2) + utils.zeroPad(date.getUTCHours(),2) + utils.zeroPad(date.getUTCMinutes(),2) + utils.zeroPad(date.getUTCSeconds(),2) + utils.zeroPad(date.getUTCMilliseconds(),3) +"0";
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};
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// Create a UTC date from a YYYYMMDDHHMM format string
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utils.convertFromYYYYMMDDHHMM = function(d)
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{
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return utils.convertFromYYYYMMDDHHMMSSMMM(d.substr(0,12));
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};
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// Create a UTC date from a YYYYMMDDHHMMSS format string
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utils.convertFromYYYYMMDDHHMMSS = function(d)
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{
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return utils.convertFromYYYYMMDDHHMMSSMMM(d.substr(0,14));
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};
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// Create a UTC date from a YYYYMMDDHHMMSSMMM format string
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utils.convertFromYYYYMMDDHHMMSSMMM = function(d)
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{
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return new Date(Date.UTC(parseInt(d.substr(0,4),10),
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parseInt(d.substr(4,2),10)-1,
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parseInt(d.substr(6,2),10),
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parseInt(d.substr(8,2)||"00",10),
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parseInt(d.substr(10,2)||"00",10),
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parseInt(d.substr(12,2)||"00",10),
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parseInt(d.substr(14,3)||"000",10)));
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};
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// Convert & to "&", < to "<", > to ">" and " to """
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utils.htmlEncode = function(s)
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{
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return s.replace(/&/mg,"&").replace(/</mg,"<").replace(/>/mg,">").replace(/\"/mg,""");
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};
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// Convert "&" to &, "<" to <, ">" to > and """ to "
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utils.htmlDecode = function(s)
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{
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return s.replace(/</mg,"<").replace(/>/mg,">").replace(/"/mg,"\"").replace(/&/mg,"&");
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};
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// Adapted from async.js, https://github.com/caolan/async
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// Creates a queue of tasks for an asyncronous worker function with a specified maximum number of concurrent operations.
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// q = utils.queue(function(taskData,callback) {
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// fs.readFile(taskData.filename,"uft8",function(err,data) {
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// callback(err,data);
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// });
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// });
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// q.push(taskData,callback) is used to queue a new task
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utils.queue = function(worker, concurrency) {
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var workers = 0;
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var q = {
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tasks: [],
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concurrency: concurrency,
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push: function (data, callback) {
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q.tasks.push({data: data, callback: callback});
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process.nextTick(q.process);
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},
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process: function () {
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if (workers < q.concurrency && q.tasks.length) {
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var task = q.tasks.shift();
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workers += 1;
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worker(task.data, function () {
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workers -= 1;
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if (task.callback) {
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task.callback.apply(task, arguments);
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}
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q.process();
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});
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}
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},
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length: function () {
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return q.tasks.length;
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},
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running: function () {
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return workers;
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}
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};
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return q;
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};
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