scriptlet exec

Execute a JavaScript scriptlet embedded in a Clout. The optional input is a filesystem path or URL to a Clout file. If no input is provided will attempt to read YAML from stdin. By default the output (assuming the scriptlet generates output) will be output to stdout, but you can use the --output/-o flag to specify a file (or direct to a file in the shell via >).

exec creates a specialized JavaScript environment in which to run the code, providing access to the parsed Clout structure as well as a few helper functions.

The default format for output is YAML, but you can select JSON, XML, or CBOR instead with --format/-f. Note that Clout in JSON may lose some type information (e.g. JSON doesn’t distinguish between an integer and a float). For this reason we also support a “compatible JSON” format (“cjson”) that adds that type information. You would need specialized code to be able to consume this format. XML output uses a bespoke structure for maps and lists, which also must be specially consumed.

scriptlet list

Lists all available JavaScript scriptlets in the Clout.

scriptlet get

Prints out JavaScript scriptlet source code extracted from the Clout.

scriptlet put

Embeds/replaces JavaScript scriptlets in the Clout and outputs a new Clout. This can be used to add scriptlets “on the fly” via piping (e.g. to add a plugin).