node.js – 从nodejs执行批处理文件

var exec = require('child_process').exec,path = require('path'),os   = require('os');
    fs   = require('fs');

// HACK: to make our calls to exec() testable,// support using a mock sHell instead of a real sHell
var sHell = process.env.SHelL || 'sh';

// support for Win32 outside Cygwin
if (os.platform() === 'win32' && process.env.SHelL === undefined) { 
  sHell = process.env.COMSPEC || 'cmd.exe';
}

// Merges the current environment variables and custom params for the environment used by child_process.exec()
function createEnv(params) {
    var env = {};
    var item;

    for (item in process.env) {
        env[item] = process.env[item];
    }

    for(item in params) {
        env[item] = params[item];
    }

    return env;
}

// scriptFile must be a full path to a sHell script
exports.exec = function (scriptFile,workingDirectory,environment,callBACk) {
    var cmd;

    if (!workingDirectory) {
        callBACk(new Error('workingDirectory cAnnot be null'),null,null);
    }

    if (!fs.existsSync(workingDirectory)) {
        callBACk(new Error('workingDirectory path not found - "' + workingDirectory + '"'),null);
    }

    if (scriptFile === null) {
        callBACk(new Error('scriptFile cAnnot be null'),null);
    }

    if (!fs.existsSync(scriptFilE)) {
        callBACk(new Error('scriptFile file not found - "' + scriptFile + '"'),null);
    }

    // transform windows BACkslashes to forWARD slashes for use in cygwin on windows
    if (path.sep === '\\') {
        scriptFile = scriptFile.replace(/\\/g,'/');
    }

    // TODO: consider building the command line using a sHell with the -c argument to run a command and exit
    cmd = '"' + sHell + '" "' + scriptFile + '"';

    // execute script within given project workspace
    exec(cmd,{
            cwd: workingDirectory,env: createEnv(environment)
         },function (error,stdout,stderr) {
            // TODO any optional processing before invoking the callBACk

            callBACk(error,stderr);
        }
    );
};