Python port of Ruby Rake
This is as straight of a clone of Rake that I could come up with.
# Trawlfile @task def bar(): print "BAR!"
Does as you might expect:
$ trawl -T bar $ trawl bar ** Execute bar BAR
And with dependencies:
# Trawlfile @task def bar(): print "BAR!" @task([bar]) def foo(): print "FOO!"
Also does what you’d expect:
$ trawl -T bar foo $ trawl bar ** Execute bar BAR! $ trawl foo ** Execute bar BAR! ** Execute foo FOO!
Which is awesome sauce, but what about files?
# Trawlfile @build("myfile.txt", recreate=False) def run(task): with open(task.name) as out: out.write("MUNCTIONAL!") @build("yup.cfg", ["myfile.txt"]) def more(task): with open(task.name) as out: with open(task.source) as src: out.write(src.read() + "!!!1!")
Will cause “myfile.txt” to be created but not overwritten if it exists. “yup.cfg” will then only be rebuilt when “myfile.txt” changes as determined by the file’s mtime:
$ trawl yup.cfg ** Execute myfile.txt ** Execute yup.cfg $ trawl yup.cfg $
The last major bit is in defining rules:
@rule('.o', '.c'): def compile(task): subprocess.check_call(["gcc", "-o", task.name, "-c", task.source]) objects = FileList("*.c").sub(".c$", ".o") @build("appname", objects) def link(task): subprocess.check_call(["gcc", "-o", task.name] + task.sources) # Add a helpful handle for running task("run", ["appname"])
Some things that need to be done yet:
- Task descriptions
- Argument support
- Test and add methods to FileList
- Add a function to import tasks programatically