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TiddlyWiki5/core/modules/commands/help.js
2014-02-25 14:50:18 +00:00

42 lines
887 B
JavaScript

/*\
title: $:/core/modules/commands/help.js
type: application/javascript
module-type: command
Help command
\*/
(function(){
/*jshint node: true, browser: true */
/*global $tw: false */
"use strict";
exports.info = {
name: "help",
synchronous: true
};
var Command = function(params,commander) {
this.params = params;
this.commander = commander;
};
Command.prototype.execute = function() {
var subhelp = this.params[0] || "default",
helpBase = "$:/language/Help/",
text;
if(!this.commander.wiki.getTiddler(helpBase + subhelp)) {
subhelp = "notfound";
}
// Wikify the help as formatted text (ie block elements generate newlines)
text = this.commander.wiki.renderTiddler("text/plain-formatted",helpBase + subhelp);
// Remove any leading linebreaks
text = text.replace(/^(\r?\n)*/g,"");
this.commander.streams.output.write(text);
};
exports.Command = Command;
})();