stdioify

stdioify

stdioify is a dirty little hack for making applications that read from and write to files use stdin/stdout instead.

Installation

npm install stdioify [-g]

Example

To make traceur read from stdin and output to stdout, run the following command

cat test.js | stdioify --command traceur --out-arg="--out" --suffix=".js"

stdioify will then read input data from stdin, write it out to a temporary file, set up a temporary file for output, and run the following command:

traceur --out <temp-out-file> <temp-in-file>

Finally, it will read the output file and write its data to stdout.

Use in code

stdioify can also be used as a library in node.js, of course.

var stdioify = require('./stdioify');

var js = 'class Greeter { sayHi() { console.log("Hi!"); } }\n' +
         'var greeter = new Greeter();\n' +
         'greeter.sayHi();';

stdioify({
    command:   'traceur',
    'out-arg': '--out',
    suffix:    '.js'
}).on('data', function(data) {
    console.log(data.toString());
}).write(js);

Options

• --command, -c: Path to executable to run [required]
• --in-arg, -i: Argument for in-file passed to command (if left out, filename will simply be appended to argument list)
• --out-arg, -o: Argument for out-file passed to command (if left out, application is assumed to write to stdout already)
• --suffix, -s: Suffix to use for temp files

Any arguments after -- will be passed to the application as-is.

License

WTFPL