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Diffstat (limited to 'node_modules/cross-spawn/lib/parse.js')
-rw-r--r-- | node_modules/cross-spawn/lib/parse.js | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/node_modules/cross-spawn/lib/parse.js b/node_modules/cross-spawn/lib/parse.js new file mode 100644 index 0000000..10a0136 --- /dev/null +++ b/node_modules/cross-spawn/lib/parse.js @@ -0,0 +1,113 @@ +'use strict'; + +var resolveCommand = require('./util/resolveCommand'); +var hasEmptyArgumentBug = require('./util/hasEmptyArgumentBug'); +var escapeArgument = require('./util/escapeArgument'); +var escapeCommand = require('./util/escapeCommand'); +var readShebang = require('./util/readShebang'); + +var isWin = process.platform === 'win32'; +var skipShellRegExp = /\.(?:com|exe)$/i; + +// Supported in Node >= 6 and >= 4.8 +var supportsShellOption = parseInt(process.version.substr(1).split('.')[0], 10) >= 6 || + parseInt(process.version.substr(1).split('.')[0], 10) === 4 && parseInt(process.version.substr(1).split('.')[1], 10) >= 8; + +function parseNonShell(parsed) { + var shebang; + var needsShell; + var applyQuotes; + + if (!isWin) { + return parsed; + } + + // Detect & add support for shebangs + parsed.file = resolveCommand(parsed.command); + parsed.file = parsed.file || resolveCommand(parsed.command, true); + shebang = parsed.file && readShebang(parsed.file); + + if (shebang) { + parsed.args.unshift(parsed.file); + parsed.command = shebang; + needsShell = hasEmptyArgumentBug || !skipShellRegExp.test(resolveCommand(shebang) || resolveCommand(shebang, true)); + } else { + needsShell = hasEmptyArgumentBug || !skipShellRegExp.test(parsed.file); + } + + // If a shell is required, use cmd.exe and take care of escaping everything correctly + if (needsShell) { + // Escape command & arguments + applyQuotes = (parsed.command !== 'echo'); // Do not quote arguments for the special "echo" command + parsed.command = escapeCommand(parsed.command); + parsed.args = parsed.args.map(function (arg) { + return escapeArgument(arg, applyQuotes); + }); + + // Make use of cmd.exe + parsed.args = ['/d', '/s', '/c', '"' + parsed.command + (parsed.args.length ? ' ' + parsed.args.join(' ') : '') + '"']; + parsed.command = process.env.comspec || 'cmd.exe'; + parsed.options.windowsVerbatimArguments = true; // Tell node's spawn that the arguments are already escaped + } + + return parsed; +} + +function parseShell(parsed) { + var shellCommand; + + // If node supports the shell option, there's no need to mimic its behavior + if (supportsShellOption) { + return parsed; + } + + // Mimic node shell option, see: https://github.com/nodejs/node/blob/b9f6a2dc059a1062776133f3d4fd848c4da7d150/lib/child_process.js#L335 + shellCommand = [parsed.command].concat(parsed.args).join(' '); + + if (isWin) { + parsed.command = typeof parsed.options.shell === 'string' ? parsed.options.shell : process.env.comspec || 'cmd.exe'; + parsed.args = ['/d', '/s', '/c', '"' + shellCommand + '"']; + parsed.options.windowsVerbatimArguments = true; // Tell node's spawn that the arguments are already escaped + } else { + if (typeof parsed.options.shell === 'string') { + parsed.command = parsed.options.shell; + } else if (process.platform === 'android') { + parsed.command = '/system/bin/sh'; + } else { + parsed.command = '/bin/sh'; + } + + parsed.args = ['-c', shellCommand]; + } + + return parsed; +} + +// ------------------------------------------------ + +function parse(command, args, options) { + var parsed; + + // 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 = options || {}; + + // Build our parsed object + parsed = { + command: command, + args: args, + options: options, + file: undefined, + original: command, + }; + + // Delegate further parsing to shell or non-shell + return options.shell ? parseShell(parsed) : parseNonShell(parsed); +} + +module.exports = parse; |