dtscript -- reformat dtrace(1M) one-liners

This is a simple command-line tool for converting a DTrace one-liner into a more readable script. I use it after a one-liner becomes gnarly enough that it's better to edit it as a script. It's not complete, and surely has bugs.

You run it exactly like you'd run dtrace(1M). For example:

$ ./dtscript -q -n 'syscall::write:entry/execname == "ls"/{ self->f = 1; }' \
      -n 'syscall::write:return/self->f/{ @[ustack()] = count(); }' 
#!/usr/sbin/dtrace -qs

syscall::write:entry
/execname == "ls"/
{
	self->f = 1;
}

syscall::write:return
/self->f/
{
	@[ustack()] = count();
}