85 lines
2.0 KiB
JavaScript
85 lines
2.0 KiB
JavaScript
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var child_process = require('child_process');
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function escapeArg(s) {
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if (s === '') {
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return "''";
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}
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if (/[^A-Za-z0-9_\/:=-]/.test(s)) {
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s = "'"+s.replace(/'/g,"'\\''")+"'";
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s = s.replace(/^(?:'')+/g, '') // unduplicate single-quote at the beginning
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.replace(/\\'''/g, "\\'" ); // remove non-escaped single-quote if there are enclosed between 2 escaped
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}
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return s;
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}
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function argsFromKeyVal(key, val, opts) {
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opts = opts || {};
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var prefix = '--';
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if (key.length === 1) {
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prefix = '-';
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}
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if ((val === true) || (val == null)) {
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return prefix + key;
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} else if (val === false) {
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return [prefix + 'no' + key];
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} else if (Array.isArray(val)) {
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var a = [];
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for (var j = 0; j < val.length; j++) {
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a = a.concat(argsFromKeyVal(key, val[j], opts));
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}
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return a;
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} else {
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if ((key.length === 1) || opts.spaceForLongArgs) {
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return [prefix + key, val];
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} else {
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return [prefix + key + '=' + escapeArg(val)];
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}
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}
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}
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function argsListFromObject(args, opts) {
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if (!args) {
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return [];
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}
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if (Array.isArray(args)) {
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return argsListFromObject({_:args});
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}
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var a = [];
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var keys = Object.keys(args);
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i];
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if (key[0] === '_') {
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continue;
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}
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var val = args[key];
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a = a.concat(argsFromKeyVal(key, val, opts));
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}
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if (args._) {
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for (var i = 0; i < args._.length; i++) {
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// Don't escape here since `execFile` will escape the args for us
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a.push('' + args._[i]);
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}
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}
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return a;
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}
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function execAsync(cmd, args, opts) {
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return new Promise(function (fulfill, reject) {
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child_process.execFile(cmd, argsListFromObject(args, opts), opts, function (err, result) {
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if (err) {
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reject(err);
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} else {
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fulfill(result);
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}
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});
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});
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}
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module.exports = execAsync;
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module.exports.argsListFromObject = argsListFromObject;
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module.exports.argsFromKeyVal = argsFromKeyVal;
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module.exports.escapeArg = escapeArg;
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