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'use strict'; const path = require('path'); const resolveCommand = require('./util/resolveCommand'); const escape = require('./util/escape'); const readShebang = require('./util/readShebang'); const isWin = process.platform === 'win32'; const isExecutableRegExp = /\.(?:com|exe)$/i; const isCmdShimRegExp = /node_modules[\\/].bin[\\/][^\\/]+\.cmd$/i; function detectShebang(parsed) { parsed.file = resolveCommand(parsed); const shebang = parsed.file && readShebang(parsed.file); if (shebang) { parsed.args.unshift(parsed.file); parsed.command = shebang; return resolveCommand(parsed); } return parsed.file; } function parseNonShell(parsed) { if (!isWin) { return parsed; } // Detect & add support for shebangs const commandFile = detectShebang(parsed); // We don't need a shell if the command filename is an executable const needsShell = !isExecutableRegExp.test(commandFile); // If a shell is required, use cmd.exe and take care of escaping everything correctly // Note that `forceShell` is an hidden option used only in tests if (parsed.options.forceShell || needsShell) { // Need to double escape meta chars if the command is a cmd-shim located in `node_modules/.bin/` // The cmd-shim simply calls execute the package bin file with NodeJS, proxying any argument // Because the escape of metachars with ^ gets interpreted when the cmd.exe is first called, // we need to double escape them const needsDoubleEscapeMetaChars = isCmdShimRegExp.test(commandFile); // Normalize posix paths into OS compatible paths (e.g.: foo/bar -> foo\bar) // This is necessary otherwise it will always fail with ENOENT in those cases parsed.command = path.normalize(parsed.command); // Escape command & arguments parsed.command = escape.command(parsed.command); parsed.args = parsed.args.map((arg) => escape.argument(arg, needsDoubleEscapeMetaChars)); const shellCommand = [parsed.command].concat(parsed.args).join(' '); parsed.args = ['/d', '/s', '/c', `"${shellCommand}"`]; parsed.command = process.env.comspec || 'cmd.exe'; parsed.options.windowsVerbatimArguments = true; // Tell node's spawn that the arguments are already escaped } return parsed; } function parse(command, args, options) { // Normalize arguments, similar to nodejs if (args && !Array.isArray(args)) { options = args; args = null; } args = args ? args.slice(0) : []; // Clone array to avoid changing the original options = Object.assign({}, options); // Clone object to avoid changing the original // Build our parsed object const parsed = { command, args, options, file: undefined, original: { command, args, }, }; // Delegate further parsing to shell or non-shell return options.shell ? parsed : parseNonShell(parsed); } module.exports = parse;