134 lines
2.9 KiB
JavaScript
134 lines
2.9 KiB
JavaScript
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/** @namespace */
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Opt = {
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/**
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* Get commandline option values.
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* @param {Array} args Commandline arguments. Like ["-a=xml", "-b", "--class=new", "--debug"]
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* @param {object} optNames Map short names to long names. Like {a:"accept", b:"backtrace", c:"class", d:"debug"}.
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* @return {object} Short names and values. Like {a:"xml", b:true, c:"new", d:true}
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*/
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get: function(args, optNames) {
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var opt = {"_": []}; // the unnamed option allows multiple values
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for (var i = 0; i < args.length; i++) {
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var arg = new String(args[i]);
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var name;
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var value;
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if (arg.charAt(0) == "-") {
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if (arg.charAt(1) == "-") { // it's a longname like --foo
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arg = arg.substring(2);
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var m = arg.split("=");
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name = m.shift();
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value = m.shift();
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if (typeof value == "undefined") value = true;
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for (var n in optNames) { // convert it to a shortname
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if (name == optNames[n]) {
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name = n;
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}
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}
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}
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else { // it's a shortname like -f
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arg = arg.substring(1);
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var m = arg.split("=");
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name = m.shift();
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value = m.shift();
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if (typeof value == "undefined") value = true;
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for (var n in optNames) { // find the matching key
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if (name == n || name+'[]' == n) {
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name = n;
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break;
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}
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}
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}
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if (name.match(/(.+)\[\]$/)) { // it's an array type like n[]
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name = RegExp.$1;
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if (!opt[name]) opt[name] = [];
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}
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if (opt[name] && opt[name].push) {
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opt[name].push(value);
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}
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else {
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opt[name] = value;
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}
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}
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else { // not associated with any optname
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opt._.push(args[i]);
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}
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}
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return opt;
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}
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}
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/*t:
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plan(11, "Testing Opt.");
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is(
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typeof Opt,
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"object",
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"Opt is an object."
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);
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is(
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typeof Opt.get,
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"function",
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"Opt.get is a function."
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);
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var optNames = {a:"accept", b:"backtrace", c:"class", d:"debug", "e[]":"exceptions"};
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var t_options = Opt.get(["-a=xml", "-b", "--class=new", "--debug", "-e=one", "-e=two", "foo", "bar"], optNames);
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is(
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t_options.a,
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"xml",
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"an option defined with a short name can be accessed by its short name."
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);
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is(
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t_options.b,
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true,
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"an option defined with a short name and no value are true."
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);
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is(
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t_options.c,
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"new",
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"an option defined with a long name can be accessed by its short name."
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);
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is(
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t_options.d,
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true,
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"an option defined with a long name and no value are true."
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);
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is(
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typeof t_options.e,
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"object",
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"an option that can accept multiple values is defined."
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);
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is(
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t_options.e.length,
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2,
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"an option that can accept multiple values can have more than one value."
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);
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is(
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t_options.e[1],
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"two",
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"an option that can accept multiple values can be accessed as an array."
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);
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is(
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typeof t_options._,
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"object",
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"the property '_' is defined for unnamed options."
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);
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is(
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t_options._[0],
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"foo",
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"the property '_' can be accessed as an array."
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);
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*/
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