116 lines
3.5 KiB
JavaScript
Executable File
116 lines
3.5 KiB
JavaScript
Executable File
(function() {
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var LONG_FLAG, MULTI_FLAG, OPTIONAL, OptionParser, SHORT_FLAG, buildRule, buildRules, normalizeArguments;
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exports.OptionParser = (function() {
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OptionParser = function(rules, banner) {
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this.banner = banner;
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this.rules = buildRules(rules);
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return this;
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};
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OptionParser.prototype.parse = function(args) {
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var _a, _b, _c, _d, _e, arg, i, isOption, matchedRule, options, rule, value;
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options = {
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arguments: []
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};
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args = normalizeArguments(args);
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_a = args;
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for (i = 0, _b = _a.length; i < _b; i++) {
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arg = _a[i];
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isOption = !!(arg.match(LONG_FLAG) || arg.match(SHORT_FLAG));
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matchedRule = false;
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_d = this.rules;
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for (_c = 0, _e = _d.length; _c < _e; _c++) {
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rule = _d[_c];
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if (rule.shortFlag === arg || rule.longFlag === arg) {
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value = rule.hasArgument ? args[i += 1] : true;
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options[rule.name] = rule.isList ? (options[rule.name] || []).concat(value) : value;
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matchedRule = true;
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break;
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}
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}
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if (isOption && !matchedRule) {
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throw new Error(("unrecognized option: " + (arg)));
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}
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if (!isOption) {
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options.arguments = args.slice(i, args.length);
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break;
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}
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}
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return options;
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};
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OptionParser.prototype.help = function() {
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var _a, _b, _c, _d, i, letPart, lines, rule, spaces;
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lines = ['Available options:'];
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if (this.banner) {
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lines.unshift(("" + (this.banner) + "\n"));
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}
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_b = this.rules;
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for (_a = 0, _c = _b.length; _a < _c; _a++) {
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rule = _b[_a];
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spaces = 15 - rule.longFlag.length;
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spaces = spaces > 0 ? (function() {
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_d = [];
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for (i = 0; (0 <= spaces ? i <= spaces : i >= spaces); (0 <= spaces ? i += 1 : i -= 1)) {
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_d.push(' ');
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}
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return _d;
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})().join('') : '';
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letPart = rule.shortFlag ? rule.shortFlag + ', ' : ' ';
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lines.push(' ' + letPart + rule.longFlag + spaces + rule.description);
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}
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return "\n" + (lines.join('\n')) + "\n";
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};
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return OptionParser;
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})();
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LONG_FLAG = /^(--\w[\w\-]+)/;
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SHORT_FLAG = /^(-\w)/;
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MULTI_FLAG = /^-(\w{2,})/;
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OPTIONAL = /\[(\w+(\*?))\]/;
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buildRules = function(rules) {
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var _a, _b, _c, _d, tuple;
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_a = []; _c = rules;
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for (_b = 0, _d = _c.length; _b < _d; _b++) {
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tuple = _c[_b];
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_a.push((function() {
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if (tuple.length < 3) {
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tuple.unshift(null);
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}
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return buildRule.apply(this, tuple);
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})());
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}
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return _a;
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};
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buildRule = function(shortFlag, longFlag, description, options) {
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var match;
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match = longFlag.match(OPTIONAL);
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longFlag = longFlag.match(LONG_FLAG)[1];
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options = options || {};
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return {
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name: longFlag.substr(2),
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shortFlag: shortFlag,
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longFlag: longFlag,
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description: description,
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hasArgument: !!(match && match[1]),
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isList: !!(match && match[2])
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};
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};
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normalizeArguments = function(args) {
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var _a, _b, _c, _d, _e, _f, arg, l, match, result;
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args = args.slice(0);
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result = [];
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_b = args;
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for (_a = 0, _c = _b.length; _a < _c; _a++) {
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arg = _b[_a];
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if ((match = arg.match(MULTI_FLAG))) {
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_e = match[1].split('');
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for (_d = 0, _f = _e.length; _d < _f; _d++) {
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l = _e[_d];
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result.push('-' + l);
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}
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} else {
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result.push(arg);
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}
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}
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return result;
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};
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})();
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