cli.js
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/*!
* Casper is a navigation utility for PhantomJS.
*
* Documentation: http://casperjs.org/
* Repository: http://github.com/n1k0/casperjs
*
* Copyright (c) 2011-2012 Nicolas Perriault
*
* Part of source code is Copyright Joyent, Inc. and other Node contributors.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
/*global CasperError, console, exports, phantom, patchRequire, require:true*/
var require = patchRequire(require);
var utils = require('utils');
var system = require('system');
/**
* Extracts, normalize and organize PhantomJS CLI arguments in a dedicated
* Object.
*
* @param array phantomArgs system.args value
* @return Object
*/
exports.parse = function parse(phantomArgs) {
"use strict";
var extract = {
args: [],
options: {},
raw: {
args: [],
options: {}
},
drop: function drop(what) {
if (utils.isNumber(what)) {
// deleting an arg by its position
this.args = this.args.filter(function _filter(arg, index) {
return index !== what;
});
// raw
if ('raw' in this) {
this.raw.args = this.raw.args.filter(function _filter(arg, index) {
return index !== what;
});
}
} else if (utils.isString(what)) {
// deleting an arg by its value
this.args = this.args.filter(function _filter(arg) {
return arg !== what;
});
// deleting an option by its name (key)
delete this.options[what];
// raw
if ('raw' in this) {
this.raw.args = this.raw.args.filter(function _filter(arg) {
return arg !== what;
});
delete this.raw.options[what];
}
} else {
throw new CasperError("Cannot drop argument of type " + typeof what);
}
},
has: function has(what) {
if (utils.isNumber(what)) {
return what in this.args;
}
if (utils.isString(what)) {
return what in this.options;
}
throw new CasperError("Unsupported cli arg tester " + typeof what);
},
get: function get(what, def) {
if (utils.isNumber(what)) {
return what in this.args ? this.args[what] : def;
}
if (utils.isString(what)) {
return what in this.options ? this.options[what] : def;
}
throw new CasperError("Unsupported cli arg getter " + typeof what);
}
};
phantomArgs.forEach(function _forEach(arg) {
if (arg.indexOf('--') === 0) {
// named option
var optionMatch = arg.match(/^--(.*?)=(.*)/i);
if (optionMatch) {
extract.options[optionMatch[1]] = castArgument(optionMatch[2]);
extract.raw.options[optionMatch[1]] = optionMatch[2];
} else {
// flag
var flagMatch = arg.match(/^--(.*)/);
if (flagMatch) {
extract.options[flagMatch[1]] = extract.raw.options[flagMatch[1]] = true;
}
}
} else {
// positional arg
extract.args.push(castArgument(arg));
extract.raw.args.push(arg);
}
});
extract.raw = utils.mergeObjects(extract.raw, {
drop: function() {
return extract.drop.apply(extract, arguments);
},
has: extract.has,
get: extract.get
});
return extract;
};
/**
* Cast a string argument to its typed equivalent.
*
* @param String arg
* @return Mixed
*/
function castArgument(arg) {
"use strict";
if (arg.match(/^-?\d+$/)) {
return parseInt(arg, 10);
} else if (arg.match(/^-?\d+\.\d+$/)) {
return parseFloat(arg);
} else if (arg.match(/^(true|false)$/i)) {
return arg.trim().toLowerCase() === "true" ? true : false;
} else {
return arg;
}
}