Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Custom, Locally-Sourced Output Filenames

DZone's Guide to

Custom, Locally-Sourced Output Filenames

It's always best to have your routine output files named programmatically. There's an easy way to do it inside your WordPress blog. Check it out!

· Web Dev Zone ·
Free Resource

Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

Skylark lets you use templates in your output file name, e.g., this would create a file called target.timestamp:

touch = rule(
    outputs = {"date_and_time": "%{name}.timestamp"},
    implementation = _impl,
)

So if you had touch(name = "foo") in a BUILD file and built :foo, you’d get foo.timestamp.

I’d always used %{name}, but I found out the other day that you can actually use other attributes, too. For example, you could have:

greet = rule(
    attrs = {"my_name": attr.string()},
    outputs = {"greeting": "hi-there-%{my_name}"},
    implementation = _impl,
)

Then if you have greet(name = "a-greeting", my_name = "kristina") and build :a-greeting, you’ll get "hi-there-kristina" as an output file.

The entire source for this example is available as a GitHub gist (all four lines of implementation function not shown above).

Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

Topics:
wordpress ,template ,file-management

Published at DZone with permission of

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}