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options.ts
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options.ts
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/*
* Copyright 2014 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Option and Argument Management
*
* Options are configuration settings sprinkled throughout the code. They can be grouped into sets of
* options called |OptionSets| which can form a hierarchy of options. For instance:
*
* var set = new OptionSet();
* var opt = set.register(new Option("v", "verbose", "boolean", false, "Enables verbose logging."));
*
* creates an option set with one option in it. The option can be changed directly using |opt.value = true| or
* automatically using the |ArgumentParser|:
*
* var parser = new ArgumentParser();
* parser.addBoundOptionSet(set);
* parser.parse(["-v"]);
*
* The |ArgumentParser| can also be used directly:
*
* var parser = new ArgumentParser();
* argumentParser.addArgument("h", "help", "boolean", {parse: function (x) {
* printUsage();
* }});
*/
module J2ME.Options {
import isObject = J2ME.isObject;
import isNullOrUndefined = J2ME.isNullOrUndefined;
import assert = J2ME.Debug.assert;
export class Argument {
shortName: string;
longName: string;
type: any;
options: any;
positional: boolean;
parseFn: any;
value: any;
constructor(shortName, longName, type, options) {
this.shortName = shortName;
this.longName = longName;
this.type = type;
options = options || {};
this.positional = options.positional;
this.parseFn = options.parse;
this.value = options.defaultValue;
}
public parse(value) {
if (this.type === "boolean") {
release || assert(typeof value === "boolean", "bad value type in Options.parse");
this.value = value;
} else if (this.type === "number") {
release || assert(!isNaN(value), value + " is not a number");
this.value = parseInt(value, 10);
} else {
this.value = value;
}
if (this.parseFn) {
this.parseFn(this.value);
}
}
}
export class ArgumentParser {
args: any [];
constructor() {
this.args = [];
}
public addArgument(shortName, longName, type, options) {
var argument = new Argument(shortName, longName, type, options);
this.args.push(argument);
return argument;
}
public addBoundOption(option) {
var options = {parse: function (x) {
option.value = x;
}};
this.args.push(new Argument(option.shortName, option.longName, option.type, options));
}
public addBoundOptionSet(optionSet) {
var self = this;
optionSet.options.forEach(function (x) {
if (x instanceof OptionSet) {
self.addBoundOptionSet(x);
} else {
release || assert(x instanceof Option, "bad option type in ArgumentParser.addBoundOptionSet");
self.addBoundOption(x);
}
});
}
public getUsage () {
var str = "";
this.args.forEach(function (x) {
if (!x.positional) {
str += "[-" + x.shortName + "|--" + x.longName + (x.type === "boolean" ? "" : " " + x.type[0].toUpperCase()) + "]";
} else {
str += x.longName;
}
str += " ";
});
return str;
}
public parse (args) {
var nonPositionalArgumentMap = {};
var positionalArgumentList = [];
this.args.forEach(function (x) {
if (x.positional) {
positionalArgumentList.push(x);
} else {
nonPositionalArgumentMap["-" + x.shortName] = x;
nonPositionalArgumentMap["--" + x.longName] = x;
}
});
var leftoverArguments = [];
while (args.length) {
var argString = args.shift();
var argument = null, value = argString;
if (argString == '--') {
leftoverArguments = leftoverArguments.concat(args);
break;
} else if (argString.slice(0, 1) == '-' || argString.slice(0, 2) == '--') {
argument = nonPositionalArgumentMap[argString];
// release || assert(argument, "Argument " + argString + " is unknown.");
if (!argument) {
continue;
}
if (argument.type !== "boolean") {
if (argument.type.indexOf("[]") > 0) {
value = [];
while (args.length && args[0][0] != '-') {
value.push(args.shift());
}
} else {
value = args.shift();
}
release || assert(value !== "-" && value !== "--", "Argument " + argString + " must have a value.");
} else {
value = true;
}
} else if (positionalArgumentList.length) {
argument = positionalArgumentList.shift();
} else {
leftoverArguments.push(value);
}
if (argument) {
argument.parse(value);
}
}
release || assert(positionalArgumentList.length === 0, "Missing positional arguments.");
return leftoverArguments;
}
}
export class OptionSet {
name: string;
settings: any;
options: any;
open: boolean = false;
constructor(name: string, settings: any = null) {
this.name = name;
this.settings = settings || {};
this.options = [];
}
public register(option) {
if (option instanceof OptionSet) {
// check for duplicate option sets (bail if found)
for (var i = 0; i < this.options.length; i++) {
var optionSet = this.options[i];
if (optionSet instanceof OptionSet && optionSet.name === option.name) {
return optionSet;
}
}
}
this.options.push(option);
if (this.settings) {
if (option instanceof OptionSet) {
var optionSettings = this.settings[option.name];
if (isObject(optionSettings)) {
option.settings = optionSettings.settings;
option.open = optionSettings.open;
}
} else {
// build_bundle chokes on this:
// if (!isNullOrUndefined(this.settings[option.longName])) {
if (typeof this.settings[option.longName] !== "undefined") {
switch (option.type) {
case "boolean":
option.value = !!this.settings[option.longName];
break;
case "number":
option.value = +this.settings[option.longName];
break;
default:
option.value = this.settings[option.longName];
break;
}
}
}
}
return option;
}
public trace(writer) {
writer.enter(this.name + " {");
this.options.forEach(function (option) {
option.trace(writer);
});
writer.leave("}");
}
public getSettings() {
var settings = {};
this.options.forEach(function(option) {
if (option instanceof OptionSet) {
settings[option.name] = {
settings: option.getSettings(),
open: option.open
};
} else {
settings[option.longName] = option.value;
}
});
return settings;
}
public setSettings(settings: any) {
if (!settings) {
return;
}
this.options.forEach(function (option) {
if (option instanceof OptionSet) {
if (option.name in settings) {
option.setSettings(settings[option.name].settings);
}
} else {
if (option.longName in settings) {
option.value = settings[option.longName];
}
}
});
}
}
export class Option {
longName: string;
shortName: string;
type: string;
defaultValue: any;
value: any;
description: string;
config: any;
/**
* Dat GUI control.
*/
// TODO remove, player will not have access to the DOM
ctrl: any;
// config:
// { range: { min: 1, max: 5, step: 1 } }
// { list: [ "item 1", "item 2", "item 3" ] }
// { choices: { "choice 1": 1, "choice 2": 2, "choice 3": 3 } }
constructor(shortName, longName, type, defaultValue, description, config = null) {
this.longName = longName;
this.shortName = shortName;
this.type = type;
this.defaultValue = defaultValue;
this.value = defaultValue;
this.description = description;
this.config = config;
}
public parse (value) {
this.value = value;
}
public trace (writer) {
writer.writeLn(("-" + this.shortName + "|--" + this.longName).padRight(" ", 30) +
" = " + this.type + " " + this.value + " [" + this.defaultValue + "]" +
" (" + this.description + ")");
}
}
}