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* EJS Embedded JavaScript templates
* Copyright 2112 Matthew Eernisse (mde@fleegix.org)
*
* 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.
*
*/
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
var parseargs = {};
var isOpt = function (arg) { return arg.indexOf('-') === 0; };
var removeOptPrefix = function (opt) { return opt.replace(/^--/, '').replace(/^-/, ''); };
/**
* @constructor
* Parses a list of command-line args into a key/value object of
* options and an array of positional commands.
* @param {Array} opts A list of options in the following format:
* [{full: 'foo', abbr: 'f'}, {full: 'bar', abbr: 'b'}]]
*/
parseargs.Parser = function (opts) {
// A key/value object of matching options parsed out of the args
this.opts = {};
this.taskNames = null;
this.envVars = null;
// Data structures used for parsing
this.reg = opts;
this.shortOpts = {};
this.longOpts = {};
var self = this;
[].forEach.call(opts, function (item) {
self.shortOpts[item.abbr] = item;
self.longOpts[item.full] = item;
});
};
parseargs.Parser.prototype = new function () {
var _trueOrNextVal = function (argParts, args) {
if (argParts[1]) {
return argParts[1];
}
else {
return (!args[0] || isOpt(args[0])) ?
true : args.shift();
}
};
/**
* Parses an array of arguments into options and positional commands
* @param {Array} args The command-line args to parse
*/
this.parse = function (args) {
var cmds = [];
var cmd;
var envVars = {};
var opts = {};
var arg;
var argItem;
var argParts;
var cmdItems;
var taskNames = [];
var preempt;
while (args.length) {
arg = args.shift();
if (isOpt(arg)) {
arg = removeOptPrefix(arg);
argParts = arg.split('=');
argItem = this.longOpts[argParts[0]] || this.shortOpts[argParts[0]];
if (argItem) {
// First-encountered preemptive opt takes precedence -- no further opts
// or possibility of ambiguity, so just look for a value, or set to
// true and then bail
if (argItem.preempts) {
opts[argItem.full] = _trueOrNextVal(argParts, args);
preempt = true;
break;
}
// If the opt requires a value, see if we can get a value from the
// next arg, or infer true from no-arg -- if it's followed by another
// opt, throw an error
if (argItem.expectValue || argItem.allowValue) {
opts[argItem.full] = _trueOrNextVal(argParts, args);
if (argItem.expectValue && !opts[argItem.full]) {
throw new Error(argItem.full + ' option expects a value.');
}
}
else {
opts[argItem.full] = true;
}
}
}
else {
cmds.unshift(arg);
}
}
if (!preempt) {
// Parse out any env-vars and task-name
while ((cmd = cmds.pop())) {
cmdItems = cmd.split('=');
if (cmdItems.length > 1) {
envVars[cmdItems[0]] = cmdItems[1];
}
else {
taskNames.push(cmd);
}
}
}
return {
opts: opts,
envVars: envVars,
taskNames: taskNames
};
};
};
if (typeof exports != 'undefined') {
module.exports = parseargs;
}
exports.default = parseargs;
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