Raphael Bauduin wrote:
I’m testing rake. I found it promising, but I’ve got I problem with
defining a rule.
I take the example of the website but get an error. Here is what I do:
rb@bidibule:~/test$ rake -V
rake, version 0.3.1
rb@bidibule:~/test$ cat rakefile
rule ‘.java’ => [
proc { |tn| tn.sub(/.class$/, ‘.java’).sub(/^classes//, ‘src/’) }
] do |t|
puts “source = #{t.source}”
end
rb@bidibule:~/test$ rake gf.java
(in /home/rb/test)
rake aborted!
Don’t know how to rake gf.java
Shouldn’t it print something like
source = gf
Hoping I didn’t miss something obvious in the docs 
No, the docs are wrong. There was a typo in the rule. It should state
that the class files are dependent on the source files, not that the
source file is dependent on the source file (duh).
The following works for me …
JAVASRC = FileList[‘src/**/*.java’]
JAVACLASSES = JAVASRC.gsub(/java$/, ‘class’).gsub(/^src/, ‘classes’)
task :default => JAVACLASSES
rule ‘.class’ => [
proc { |tn| tn.sub(/.class$/, ‘.java’).sub(/^classes//, ‘src/’) }
] do |t|
puts “source = #{t.source}, target=#{t.name}”
end
Where did you see that in the docs? I’ll correct it.
···
“Beware of bugs in the above code; I have only proved it correct,
not tried it.” – Donald Knuth (in a memo to Peter van Emde Boas)
