fiberjob

Run external commands synchronously using Noje.js Fibers

Simple usage

Run ls in a fiber:

Fiber(function() {
    var files=FiberJob("ls").run().getOutput();
    // Do other stuff here, will be run _after_ the command is executed.
}).run();

Arguments

Arguments can be applied using the chainable arg method:

Fiber(function() {
    FiberJob("echo").arg("hello","world").run();
}).run();

If your arguments should be somewhat more complex:

Fiber(function() {
    var f=FiberJob("echo");
    f.arg("hello");
    f.arg("world");
    f.run();
}).run();

Show output

By default, the output of the command is stored in the object and can be retreived using the getOutput method. You can also send the output to standard out:

Fiber(function() {
    FiberJob("echo").arg("hello","world").show().run();
}).run();

Return code

In addition to getOutput there is also getReturnCode to get the command's return code:

Fiber(function() {
    var f=FiberJob("ls");
    f.run();
    var output=f.getOutput();
    var code=f.getReturnCode();
}).run();

Fail if things didn't go well

Often in script situations, we want to run an external command and make sure it has a return code that signals success. If it does, we are not particularly interested in the output, but if not, we would like to know what went wrong. The expect method does exactly this:

Fiber(function() {
    FiberJob("ls").expect(0).run();
}).run();