Current File : /var/www/projetos/stb.ind.br/wp-content/themes/stb/node_modules/cross-spawn/index.js
var fs = require('fs');
var path = require('path');
var cp = require('child_process');
var LRU = require('lru-cache');
var isWin = process.platform === 'win32';
var shebangCache = LRU({ max: 50, maxAge: 30 * 1000 });
function readShebang(command) {
var buffer;
var fd;
var match;
var shebang;
// Resolve command to an absolute path if it contains /
if (command.indexOf(path.sep) !== -1) {
command = path.resolve(command);
}
// Check if its resolved in the cache
shebang = shebangCache.get(command);
if (shebang) {
return shebang;
}
// Read the first 150 bytes from the file
buffer = new Buffer(150);
try {
fd = fs.openSync(command, 'r');
fs.readSync(fd, buffer, 0, 150, 0);
} catch (e) {}
// Check if it is a shebang
match = buffer.toString().trim().match(/\#\!\/usr\/bin\/env ([^\r\n]+)/i);
shebang = match && match[1];
// Store the shebang in the cache
shebangCache.set(command, shebang);
return shebang;
}
function escapeArg(arg, quote) {
// Convert to string
arg = '' + arg;
// If we are not going to quote the argument,
// escape shell metacharacters, including double and single quotes:
if (!quote) {
arg = arg.replace(/([\(\)%!\^<>&|;,"' ])/g, '^$1');
} else {
// Sequence of backslashes followed by a double quote:
// double up all the backslashes and escape the double quote
arg = arg.replace(/(\\*)"/gi, '$1$1\\"');
// Sequence of backslashes followed by the end of the string
// (which will become a double quote later):
// double up all the backslashes
arg = arg.replace(/(\\*)$/, '$1$1');
// All other backslashes occur literally
// Quote the whole thing:
arg = '"' + arg + '"';
}
return arg;
}
function escapeCommand(command) {
// Do not escape if this command is not dangerous..
// We do this so that commands like "echo" or "ifconfig" work
// Quoting them, will make them unnaccessible
return /^[a-z0-9_-]+$/i.test(command) ? command : escapeArg(command, true);
}
function spawn(command, args, options) {
var applyQuotes;
var shebang;
args = args || [];
options = options || {};
// Use node's spawn if not on windows
if (!isWin) {
return cp.spawn(command, args, options);
}
// Detect & add support for shebangs
shebang = readShebang(command);
if (shebang) {
args.unshift(command);
command = shebang;
}
// Escape command & arguments
applyQuotes = command !== 'echo'; // Do not quote arguments for the special "echo" command
command = escapeCommand(command);
args = args.map(function (arg) {
return escapeArg(arg, applyQuotes);
});
// Use cmd.exe
args = ['/s', '/c', '"' + command + (args.length ? ' ' + args.join(' ') : '') + '"'];
command = process.env.comspec || 'cmd.exe';
// Tell node's spawn that the arguments are already escaped
options.windowsVerbatimArguments = true;
return cp.spawn(command, args, options);
}
module.exports = spawn;
module.exports.spawn = spawn;
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